diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/examples/allegro5_example/imgui_impl_a5.cpp b/examples/allegro5_example/imgui_impl_a5.cpp deleted file mode 100644 index 59ca1ec..0000000 --- a/examples/allegro5_example/imgui_impl_a5.cpp +++ /dev/null @@ -1,315 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. -// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. - -#include // uint64_t -#include // memcpy -#include "imgui.h" -#include "imgui_impl_a5.h" -#include -#include - -#ifdef _WIN32 -#include -#endif - -// Data -static ALLEGRO_DISPLAY* g_Display = NULL; -static ALLEGRO_BITMAP* g_Texture = NULL; -static double g_Time = 0.0; -static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; -static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; - -struct ImDrawVertAllegro -{ - ImVec2 pos; - ImVec2 uv; - ALLEGRO_COLOR col; -}; - -// Render function. -// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) -void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) -{ - int op, src, dst; - al_get_blender(&op, &src, &dst); - al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); - - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - - // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats - static ImVector vertices; - vertices.resize(cmd_list->VtxBuffer.Size); - for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) - { - const ImDrawVert &dv = cmd_list->VtxBuffer[i]; - ImDrawVertAllegro v; - v.pos = dv.pos; - v.uv = dv.uv; - unsigned char *c = (unsigned char*)&dv.col; - v.col = al_map_rgba(c[0], c[1], c[2], c[3]); - vertices[i] = v; - } - - const int* indices = NULL; - if (sizeof(ImDrawIdx) == 2) - { - // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. - // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. - static ImVector indices_converted; - indices_converted.resize(cmd_list->IdxBuffer.Size); - for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) - indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; - indices = indices_converted.Data; - } - else if (sizeof(ImDrawIdx) == 4) - { - indices = (const int*)cmd_list->IdxBuffer.Data; - } - - int idx_offset = 0; - for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) - { - const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; - if (pcmd->UserCallback) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; - al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); - al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); - } - idx_offset += pcmd->ElemCount; - } - } - - // Restore modified state - al_set_blender(op, src, dst); - al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); -} - -bool Imgui_ImplA5_CreateDeviceObjects() -{ - // Build texture atlas - ImGuiIO &io = ImGui::GetIO(); - unsigned char *pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Create texture - int flags = al_get_new_bitmap_flags(); - int fmt = al_get_new_bitmap_format(); - al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); - al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); - ALLEGRO_BITMAP* img = al_create_bitmap(width, height); - al_set_new_bitmap_flags(flags); - al_set_new_bitmap_format(fmt); - if (!img) - return false; - - ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); - if (!locked_img) - { - al_destroy_bitmap(img); - return false; - } - memcpy(locked_img->data, pixels, sizeof(int)*width*height); - al_unlock_bitmap(img); - - // Convert software texture to hardware texture. - ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); - al_destroy_bitmap(img); - if (!cloned_img) - return false; - - // Store our identifier - io.Fonts->TexID = (void*)cloned_img; - g_Texture = cloned_img; - - // Create an invisible mouse cursor - // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. - ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); - g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); - al_destroy_bitmap(mouse_cursor); - - return true; -} - -void ImGui_ImplA5_InvalidateDeviceObjects() -{ - if (g_Texture) - { - al_destroy_bitmap(g_Texture); - ImGui::GetIO().Fonts->TexID = NULL; - g_Texture = NULL; - } - if (g_MouseCursorInvisible) - { - al_destroy_mouse_cursor(g_MouseCursorInvisible); - g_MouseCursorInvisible = NULL; - } -} - -bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) -{ - g_Display = display; - - // Create custom vertex declaration. - // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. - // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. - ALLEGRO_VERTEX_ELEMENT elems[] = - { - { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, - { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, - { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, - { 0, 0, 0 } - }; - g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; - io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; - io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; - io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; - io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; - io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; - io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; - io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; - io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; - io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; - io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; - io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; - io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; - io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; - io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; - io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; - io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; - io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; - io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; - -#ifdef _WIN32 - io.ImeWindowHandle = al_get_win_window_handle(g_Display); -#endif - - return true; -} - -void ImGui_ImplA5_Shutdown() -{ - ImGui_ImplA5_InvalidateDeviceObjects(); -} - -// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. -// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. -bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) -{ - ImGuiIO &io = ImGui::GetIO(); - - switch (ev->type) - { - case ALLEGRO_EVENT_MOUSE_AXES: - io.MouseWheel += ev->mouse.dz; - io.MouseWheelH += ev->mouse.dw; - return true; - case ALLEGRO_EVENT_KEY_CHAR: - if (ev->keyboard.display == g_Display) - if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) - io.AddInputCharacter((unsigned short)ev->keyboard.unichar); - return true; - case ALLEGRO_EVENT_KEY_DOWN: - case ALLEGRO_EVENT_KEY_UP: - if (ev->keyboard.display == g_Display) - io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); - return true; - } - return false; -} - -void ImGui_ImplA5_NewFrame() -{ - if (!g_Texture) - Imgui_ImplA5_CreateDeviceObjects(); - - ImGuiIO &io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - int w, h; - w = al_get_display_width(g_Display); - h = al_get_display_height(g_Display); - io.DisplaySize = ImVec2((float)w, (float)h); - - // Setup time step - double current_time = al_get_time(); - io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); - g_Time = current_time; - - // Setup inputs - ALLEGRO_KEYBOARD_STATE keys; - al_get_keyboard_state(&keys); - io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); - io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); - io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); - io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); - - ALLEGRO_MOUSE_STATE mouse; - if (keys.display == g_Display) - { - al_get_mouse_state(&mouse); - io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); - } - else - { - io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); - } - - al_get_mouse_state(&mouse); - io.MouseDown[0] = mouse.buttons & (1 << 0); - io.MouseDown[1] = mouse.buttons & (1 << 1); - io.MouseDown[2] = mouse.buttons & (1 << 2); - - // Hide OS mouse cursor if ImGui is drawing it - if (io.MouseDrawCursor) - { - al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); - } - else - { - ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; - switch (ImGui::GetMouseCursor()) - { - case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; - case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; - case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; - case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; - case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; - case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; - } - al_set_system_mouse_cursor(g_Display, cursor_id); - } - - // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. - ImGui::NewFrame(); -} diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/examples/allegro5_example/imgui_impl_a5.cpp b/examples/allegro5_example/imgui_impl_a5.cpp deleted file mode 100644 index 59ca1ec..0000000 --- a/examples/allegro5_example/imgui_impl_a5.cpp +++ /dev/null @@ -1,315 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. -// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. - -#include // uint64_t -#include // memcpy -#include "imgui.h" -#include "imgui_impl_a5.h" -#include -#include - -#ifdef _WIN32 -#include -#endif - -// Data -static ALLEGRO_DISPLAY* g_Display = NULL; -static ALLEGRO_BITMAP* g_Texture = NULL; -static double g_Time = 0.0; -static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; -static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; - -struct ImDrawVertAllegro -{ - ImVec2 pos; - ImVec2 uv; - ALLEGRO_COLOR col; -}; - -// Render function. -// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) -void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) -{ - int op, src, dst; - al_get_blender(&op, &src, &dst); - al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); - - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - - // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats - static ImVector vertices; - vertices.resize(cmd_list->VtxBuffer.Size); - for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) - { - const ImDrawVert &dv = cmd_list->VtxBuffer[i]; - ImDrawVertAllegro v; - v.pos = dv.pos; - v.uv = dv.uv; - unsigned char *c = (unsigned char*)&dv.col; - v.col = al_map_rgba(c[0], c[1], c[2], c[3]); - vertices[i] = v; - } - - const int* indices = NULL; - if (sizeof(ImDrawIdx) == 2) - { - // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. - // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. - static ImVector indices_converted; - indices_converted.resize(cmd_list->IdxBuffer.Size); - for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) - indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; - indices = indices_converted.Data; - } - else if (sizeof(ImDrawIdx) == 4) - { - indices = (const int*)cmd_list->IdxBuffer.Data; - } - - int idx_offset = 0; - for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) - { - const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; - if (pcmd->UserCallback) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; - al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); - al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); - } - idx_offset += pcmd->ElemCount; - } - } - - // Restore modified state - al_set_blender(op, src, dst); - al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); -} - -bool Imgui_ImplA5_CreateDeviceObjects() -{ - // Build texture atlas - ImGuiIO &io = ImGui::GetIO(); - unsigned char *pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Create texture - int flags = al_get_new_bitmap_flags(); - int fmt = al_get_new_bitmap_format(); - al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); - al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); - ALLEGRO_BITMAP* img = al_create_bitmap(width, height); - al_set_new_bitmap_flags(flags); - al_set_new_bitmap_format(fmt); - if (!img) - return false; - - ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); - if (!locked_img) - { - al_destroy_bitmap(img); - return false; - } - memcpy(locked_img->data, pixels, sizeof(int)*width*height); - al_unlock_bitmap(img); - - // Convert software texture to hardware texture. - ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); - al_destroy_bitmap(img); - if (!cloned_img) - return false; - - // Store our identifier - io.Fonts->TexID = (void*)cloned_img; - g_Texture = cloned_img; - - // Create an invisible mouse cursor - // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. - ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); - g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); - al_destroy_bitmap(mouse_cursor); - - return true; -} - -void ImGui_ImplA5_InvalidateDeviceObjects() -{ - if (g_Texture) - { - al_destroy_bitmap(g_Texture); - ImGui::GetIO().Fonts->TexID = NULL; - g_Texture = NULL; - } - if (g_MouseCursorInvisible) - { - al_destroy_mouse_cursor(g_MouseCursorInvisible); - g_MouseCursorInvisible = NULL; - } -} - -bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) -{ - g_Display = display; - - // Create custom vertex declaration. - // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. - // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. - ALLEGRO_VERTEX_ELEMENT elems[] = - { - { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, - { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, - { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, - { 0, 0, 0 } - }; - g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; - io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; - io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; - io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; - io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; - io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; - io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; - io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; - io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; - io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; - io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; - io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; - io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; - io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; - io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; - io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; - io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; - io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; - io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; - -#ifdef _WIN32 - io.ImeWindowHandle = al_get_win_window_handle(g_Display); -#endif - - return true; -} - -void ImGui_ImplA5_Shutdown() -{ - ImGui_ImplA5_InvalidateDeviceObjects(); -} - -// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. -// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. -bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) -{ - ImGuiIO &io = ImGui::GetIO(); - - switch (ev->type) - { - case ALLEGRO_EVENT_MOUSE_AXES: - io.MouseWheel += ev->mouse.dz; - io.MouseWheelH += ev->mouse.dw; - return true; - case ALLEGRO_EVENT_KEY_CHAR: - if (ev->keyboard.display == g_Display) - if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) - io.AddInputCharacter((unsigned short)ev->keyboard.unichar); - return true; - case ALLEGRO_EVENT_KEY_DOWN: - case ALLEGRO_EVENT_KEY_UP: - if (ev->keyboard.display == g_Display) - io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); - return true; - } - return false; -} - -void ImGui_ImplA5_NewFrame() -{ - if (!g_Texture) - Imgui_ImplA5_CreateDeviceObjects(); - - ImGuiIO &io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - int w, h; - w = al_get_display_width(g_Display); - h = al_get_display_height(g_Display); - io.DisplaySize = ImVec2((float)w, (float)h); - - // Setup time step - double current_time = al_get_time(); - io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); - g_Time = current_time; - - // Setup inputs - ALLEGRO_KEYBOARD_STATE keys; - al_get_keyboard_state(&keys); - io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); - io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); - io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); - io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); - - ALLEGRO_MOUSE_STATE mouse; - if (keys.display == g_Display) - { - al_get_mouse_state(&mouse); - io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); - } - else - { - io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); - } - - al_get_mouse_state(&mouse); - io.MouseDown[0] = mouse.buttons & (1 << 0); - io.MouseDown[1] = mouse.buttons & (1 << 1); - io.MouseDown[2] = mouse.buttons & (1 << 2); - - // Hide OS mouse cursor if ImGui is drawing it - if (io.MouseDrawCursor) - { - al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); - } - else - { - ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; - switch (ImGui::GetMouseCursor()) - { - case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; - case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; - case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; - case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; - case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; - case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; - } - al_set_system_mouse_cursor(g_Display, cursor_id); - } - - // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. - ImGui::NewFrame(); -} diff --git a/examples/allegro5_example/imgui_impl_a5.h b/examples/allegro5_example/imgui_impl_a5.h deleted file mode 100644 index ccc3ac4..0000000 --- a/examples/allegro5_example/imgui_impl_a5.h +++ /dev/null @@ -1,26 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -#pragma once - -struct ALLEGRO_DISPLAY; -union ALLEGRO_EVENT; - -IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); -IMGUI_API void ImGui_ImplA5_Shutdown(); -IMGUI_API void ImGui_ImplA5_NewFrame(); -IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); -IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); - -// Use if you want to reset your rendering device without losing ImGui state. -IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); -IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/examples/allegro5_example/imgui_impl_a5.cpp b/examples/allegro5_example/imgui_impl_a5.cpp deleted file mode 100644 index 59ca1ec..0000000 --- a/examples/allegro5_example/imgui_impl_a5.cpp +++ /dev/null @@ -1,315 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. -// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. - -#include // uint64_t -#include // memcpy -#include "imgui.h" -#include "imgui_impl_a5.h" -#include -#include - -#ifdef _WIN32 -#include -#endif - -// Data -static ALLEGRO_DISPLAY* g_Display = NULL; -static ALLEGRO_BITMAP* g_Texture = NULL; -static double g_Time = 0.0; -static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; -static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; - -struct ImDrawVertAllegro -{ - ImVec2 pos; - ImVec2 uv; - ALLEGRO_COLOR col; -}; - -// Render function. -// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) -void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) -{ - int op, src, dst; - al_get_blender(&op, &src, &dst); - al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); - - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - - // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats - static ImVector vertices; - vertices.resize(cmd_list->VtxBuffer.Size); - for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) - { - const ImDrawVert &dv = cmd_list->VtxBuffer[i]; - ImDrawVertAllegro v; - v.pos = dv.pos; - v.uv = dv.uv; - unsigned char *c = (unsigned char*)&dv.col; - v.col = al_map_rgba(c[0], c[1], c[2], c[3]); - vertices[i] = v; - } - - const int* indices = NULL; - if (sizeof(ImDrawIdx) == 2) - { - // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. - // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. - static ImVector indices_converted; - indices_converted.resize(cmd_list->IdxBuffer.Size); - for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) - indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; - indices = indices_converted.Data; - } - else if (sizeof(ImDrawIdx) == 4) - { - indices = (const int*)cmd_list->IdxBuffer.Data; - } - - int idx_offset = 0; - for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) - { - const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; - if (pcmd->UserCallback) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; - al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); - al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); - } - idx_offset += pcmd->ElemCount; - } - } - - // Restore modified state - al_set_blender(op, src, dst); - al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); -} - -bool Imgui_ImplA5_CreateDeviceObjects() -{ - // Build texture atlas - ImGuiIO &io = ImGui::GetIO(); - unsigned char *pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Create texture - int flags = al_get_new_bitmap_flags(); - int fmt = al_get_new_bitmap_format(); - al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); - al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); - ALLEGRO_BITMAP* img = al_create_bitmap(width, height); - al_set_new_bitmap_flags(flags); - al_set_new_bitmap_format(fmt); - if (!img) - return false; - - ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); - if (!locked_img) - { - al_destroy_bitmap(img); - return false; - } - memcpy(locked_img->data, pixels, sizeof(int)*width*height); - al_unlock_bitmap(img); - - // Convert software texture to hardware texture. - ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); - al_destroy_bitmap(img); - if (!cloned_img) - return false; - - // Store our identifier - io.Fonts->TexID = (void*)cloned_img; - g_Texture = cloned_img; - - // Create an invisible mouse cursor - // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. - ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); - g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); - al_destroy_bitmap(mouse_cursor); - - return true; -} - -void ImGui_ImplA5_InvalidateDeviceObjects() -{ - if (g_Texture) - { - al_destroy_bitmap(g_Texture); - ImGui::GetIO().Fonts->TexID = NULL; - g_Texture = NULL; - } - if (g_MouseCursorInvisible) - { - al_destroy_mouse_cursor(g_MouseCursorInvisible); - g_MouseCursorInvisible = NULL; - } -} - -bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) -{ - g_Display = display; - - // Create custom vertex declaration. - // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. - // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. - ALLEGRO_VERTEX_ELEMENT elems[] = - { - { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, - { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, - { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, - { 0, 0, 0 } - }; - g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; - io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; - io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; - io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; - io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; - io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; - io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; - io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; - io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; - io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; - io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; - io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; - io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; - io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; - io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; - io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; - io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; - io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; - io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; - -#ifdef _WIN32 - io.ImeWindowHandle = al_get_win_window_handle(g_Display); -#endif - - return true; -} - -void ImGui_ImplA5_Shutdown() -{ - ImGui_ImplA5_InvalidateDeviceObjects(); -} - -// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. -// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. -bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) -{ - ImGuiIO &io = ImGui::GetIO(); - - switch (ev->type) - { - case ALLEGRO_EVENT_MOUSE_AXES: - io.MouseWheel += ev->mouse.dz; - io.MouseWheelH += ev->mouse.dw; - return true; - case ALLEGRO_EVENT_KEY_CHAR: - if (ev->keyboard.display == g_Display) - if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) - io.AddInputCharacter((unsigned short)ev->keyboard.unichar); - return true; - case ALLEGRO_EVENT_KEY_DOWN: - case ALLEGRO_EVENT_KEY_UP: - if (ev->keyboard.display == g_Display) - io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); - return true; - } - return false; -} - -void ImGui_ImplA5_NewFrame() -{ - if (!g_Texture) - Imgui_ImplA5_CreateDeviceObjects(); - - ImGuiIO &io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - int w, h; - w = al_get_display_width(g_Display); - h = al_get_display_height(g_Display); - io.DisplaySize = ImVec2((float)w, (float)h); - - // Setup time step - double current_time = al_get_time(); - io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); - g_Time = current_time; - - // Setup inputs - ALLEGRO_KEYBOARD_STATE keys; - al_get_keyboard_state(&keys); - io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); - io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); - io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); - io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); - - ALLEGRO_MOUSE_STATE mouse; - if (keys.display == g_Display) - { - al_get_mouse_state(&mouse); - io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); - } - else - { - io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); - } - - al_get_mouse_state(&mouse); - io.MouseDown[0] = mouse.buttons & (1 << 0); - io.MouseDown[1] = mouse.buttons & (1 << 1); - io.MouseDown[2] = mouse.buttons & (1 << 2); - - // Hide OS mouse cursor if ImGui is drawing it - if (io.MouseDrawCursor) - { - al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); - } - else - { - ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; - switch (ImGui::GetMouseCursor()) - { - case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; - case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; - case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; - case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; - case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; - case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; - } - al_set_system_mouse_cursor(g_Display, cursor_id); - } - - // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. - ImGui::NewFrame(); -} diff --git a/examples/allegro5_example/imgui_impl_a5.h b/examples/allegro5_example/imgui_impl_a5.h deleted file mode 100644 index ccc3ac4..0000000 --- a/examples/allegro5_example/imgui_impl_a5.h +++ /dev/null @@ -1,26 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -#pragma once - -struct ALLEGRO_DISPLAY; -union ALLEGRO_EVENT; - -IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); -IMGUI_API void ImGui_ImplA5_Shutdown(); -IMGUI_API void ImGui_ImplA5_NewFrame(); -IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); -IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); - -// Use if you want to reset your rendering device without losing ImGui state. -IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); -IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/examples/allegro5_example/imgui_impl_allegro5.cpp b/examples/allegro5_example/imgui_impl_allegro5.cpp new file mode 100644 index 0000000..1c91652 --- /dev/null +++ b/examples/allegro5_example/imgui_impl_allegro5.cpp @@ -0,0 +1,316 @@ +// ImGui Allegro 5 bindings + +// Implemented features: +// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. +// Missing features: +// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). +// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui, Original code by @birthggd + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2018-04-18: Misc: Renamed file from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. +// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. +// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. +// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. +// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. + +#include // uint64_t +#include // memcpy +#include "imgui.h" +#include "imgui_impl_allegro5.h" +#include +#include + +#ifdef _WIN32 +#include +#endif + +// Data +static ALLEGRO_DISPLAY* g_Display = NULL; +static ALLEGRO_BITMAP* g_Texture = NULL; +static double g_Time = 0.0; +static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; +static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; + +struct ImDrawVertAllegro +{ + ImVec2 pos; + ImVec2 uv; + ALLEGRO_COLOR col; +}; + +// Render function. +// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) +void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) +{ + int op, src, dst; + al_get_blender(&op, &src, &dst); + al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); + + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* cmd_list = draw_data->CmdLists[n]; + + // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats + static ImVector vertices; + vertices.resize(cmd_list->VtxBuffer.Size); + for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) + { + const ImDrawVert &dv = cmd_list->VtxBuffer[i]; + ImDrawVertAllegro v; + v.pos = dv.pos; + v.uv = dv.uv; + unsigned char *c = (unsigned char*)&dv.col; + v.col = al_map_rgba(c[0], c[1], c[2], c[3]); + vertices[i] = v; + } + + const int* indices = NULL; + if (sizeof(ImDrawIdx) == 2) + { + // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. + // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. + static ImVector indices_converted; + indices_converted.resize(cmd_list->IdxBuffer.Size); + for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) + indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; + indices = indices_converted.Data; + } + else if (sizeof(ImDrawIdx) == 4) + { + indices = (const int*)cmd_list->IdxBuffer.Data; + } + + int idx_offset = 0; + for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) + { + const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; + if (pcmd->UserCallback) + { + pcmd->UserCallback(cmd_list, pcmd); + } + else + { + ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; + al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); + al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); + } + idx_offset += pcmd->ElemCount; + } + } + + // Restore modified state + al_set_blender(op, src, dst); + al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); +} + +bool Imgui_ImplA5_CreateDeviceObjects() +{ + // Build texture atlas + ImGuiIO &io = ImGui::GetIO(); + unsigned char *pixels; + int width, height; + io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); + + // Create texture + int flags = al_get_new_bitmap_flags(); + int fmt = al_get_new_bitmap_format(); + al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); + al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); + ALLEGRO_BITMAP* img = al_create_bitmap(width, height); + al_set_new_bitmap_flags(flags); + al_set_new_bitmap_format(fmt); + if (!img) + return false; + + ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); + if (!locked_img) + { + al_destroy_bitmap(img); + return false; + } + memcpy(locked_img->data, pixels, sizeof(int)*width*height); + al_unlock_bitmap(img); + + // Convert software texture to hardware texture. + ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); + al_destroy_bitmap(img); + if (!cloned_img) + return false; + + // Store our identifier + io.Fonts->TexID = (void*)cloned_img; + g_Texture = cloned_img; + + // Create an invisible mouse cursor + // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. + ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); + g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); + al_destroy_bitmap(mouse_cursor); + + return true; +} + +void ImGui_ImplA5_InvalidateDeviceObjects() +{ + if (g_Texture) + { + al_destroy_bitmap(g_Texture); + ImGui::GetIO().Fonts->TexID = NULL; + g_Texture = NULL; + } + if (g_MouseCursorInvisible) + { + al_destroy_mouse_cursor(g_MouseCursorInvisible); + g_MouseCursorInvisible = NULL; + } +} + +bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) +{ + g_Display = display; + + // Create custom vertex declaration. + // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. + // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. + ALLEGRO_VERTEX_ELEMENT elems[] = + { + { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, + { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, + { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, + { 0, 0, 0 } + }; + g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); + + ImGuiIO& io = ImGui::GetIO(); + io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; + io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; + io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; + io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; + io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; + io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; + io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; + io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; + io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; + io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; + io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; + io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; + io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; + io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; + io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; + io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; + io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; + io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; + io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; + io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; + io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; + +#ifdef _WIN32 + io.ImeWindowHandle = al_get_win_window_handle(g_Display); +#endif + + return true; +} + +void ImGui_ImplA5_Shutdown() +{ + ImGui_ImplA5_InvalidateDeviceObjects(); +} + +// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. +// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. +// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. +// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. +bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) +{ + ImGuiIO &io = ImGui::GetIO(); + + switch (ev->type) + { + case ALLEGRO_EVENT_MOUSE_AXES: + io.MouseWheel += ev->mouse.dz; + io.MouseWheelH += ev->mouse.dw; + return true; + case ALLEGRO_EVENT_KEY_CHAR: + if (ev->keyboard.display == g_Display) + if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) + io.AddInputCharacter((unsigned short)ev->keyboard.unichar); + return true; + case ALLEGRO_EVENT_KEY_DOWN: + case ALLEGRO_EVENT_KEY_UP: + if (ev->keyboard.display == g_Display) + io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); + return true; + } + return false; +} + +void ImGui_ImplA5_NewFrame() +{ + if (!g_Texture) + Imgui_ImplA5_CreateDeviceObjects(); + + ImGuiIO &io = ImGui::GetIO(); + + // Setup display size (every frame to accommodate for window resizing) + int w, h; + w = al_get_display_width(g_Display); + h = al_get_display_height(g_Display); + io.DisplaySize = ImVec2((float)w, (float)h); + + // Setup time step + double current_time = al_get_time(); + io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); + g_Time = current_time; + + // Setup inputs + ALLEGRO_KEYBOARD_STATE keys; + al_get_keyboard_state(&keys); + io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); + io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); + io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); + io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); + + ALLEGRO_MOUSE_STATE mouse; + if (keys.display == g_Display) + { + al_get_mouse_state(&mouse); + io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); + } + else + { + io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); + } + + al_get_mouse_state(&mouse); + io.MouseDown[0] = mouse.buttons & (1 << 0); + io.MouseDown[1] = mouse.buttons & (1 << 1); + io.MouseDown[2] = mouse.buttons & (1 << 2); + + // Hide OS mouse cursor if ImGui is drawing it + if (io.MouseDrawCursor) + { + al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); + } + else + { + ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; + switch (ImGui::GetMouseCursor()) + { + case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; + case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; + case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; + case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; + case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; + case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; + } + al_set_system_mouse_cursor(g_Display, cursor_id); + } + + // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. + ImGui::NewFrame(); +} diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/examples/allegro5_example/imgui_impl_a5.cpp b/examples/allegro5_example/imgui_impl_a5.cpp deleted file mode 100644 index 59ca1ec..0000000 --- a/examples/allegro5_example/imgui_impl_a5.cpp +++ /dev/null @@ -1,315 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. -// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. - -#include // uint64_t -#include // memcpy -#include "imgui.h" -#include "imgui_impl_a5.h" -#include -#include - -#ifdef _WIN32 -#include -#endif - -// Data -static ALLEGRO_DISPLAY* g_Display = NULL; -static ALLEGRO_BITMAP* g_Texture = NULL; -static double g_Time = 0.0; -static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; -static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; - -struct ImDrawVertAllegro -{ - ImVec2 pos; - ImVec2 uv; - ALLEGRO_COLOR col; -}; - -// Render function. -// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) -void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) -{ - int op, src, dst; - al_get_blender(&op, &src, &dst); - al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); - - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - - // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats - static ImVector vertices; - vertices.resize(cmd_list->VtxBuffer.Size); - for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) - { - const ImDrawVert &dv = cmd_list->VtxBuffer[i]; - ImDrawVertAllegro v; - v.pos = dv.pos; - v.uv = dv.uv; - unsigned char *c = (unsigned char*)&dv.col; - v.col = al_map_rgba(c[0], c[1], c[2], c[3]); - vertices[i] = v; - } - - const int* indices = NULL; - if (sizeof(ImDrawIdx) == 2) - { - // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. - // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. - static ImVector indices_converted; - indices_converted.resize(cmd_list->IdxBuffer.Size); - for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) - indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; - indices = indices_converted.Data; - } - else if (sizeof(ImDrawIdx) == 4) - { - indices = (const int*)cmd_list->IdxBuffer.Data; - } - - int idx_offset = 0; - for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) - { - const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; - if (pcmd->UserCallback) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; - al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); - al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); - } - idx_offset += pcmd->ElemCount; - } - } - - // Restore modified state - al_set_blender(op, src, dst); - al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); -} - -bool Imgui_ImplA5_CreateDeviceObjects() -{ - // Build texture atlas - ImGuiIO &io = ImGui::GetIO(); - unsigned char *pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Create texture - int flags = al_get_new_bitmap_flags(); - int fmt = al_get_new_bitmap_format(); - al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); - al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); - ALLEGRO_BITMAP* img = al_create_bitmap(width, height); - al_set_new_bitmap_flags(flags); - al_set_new_bitmap_format(fmt); - if (!img) - return false; - - ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); - if (!locked_img) - { - al_destroy_bitmap(img); - return false; - } - memcpy(locked_img->data, pixels, sizeof(int)*width*height); - al_unlock_bitmap(img); - - // Convert software texture to hardware texture. - ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); - al_destroy_bitmap(img); - if (!cloned_img) - return false; - - // Store our identifier - io.Fonts->TexID = (void*)cloned_img; - g_Texture = cloned_img; - - // Create an invisible mouse cursor - // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. - ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); - g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); - al_destroy_bitmap(mouse_cursor); - - return true; -} - -void ImGui_ImplA5_InvalidateDeviceObjects() -{ - if (g_Texture) - { - al_destroy_bitmap(g_Texture); - ImGui::GetIO().Fonts->TexID = NULL; - g_Texture = NULL; - } - if (g_MouseCursorInvisible) - { - al_destroy_mouse_cursor(g_MouseCursorInvisible); - g_MouseCursorInvisible = NULL; - } -} - -bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) -{ - g_Display = display; - - // Create custom vertex declaration. - // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. - // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. - ALLEGRO_VERTEX_ELEMENT elems[] = - { - { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, - { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, - { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, - { 0, 0, 0 } - }; - g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; - io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; - io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; - io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; - io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; - io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; - io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; - io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; - io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; - io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; - io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; - io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; - io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; - io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; - io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; - io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; - io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; - io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; - io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; - -#ifdef _WIN32 - io.ImeWindowHandle = al_get_win_window_handle(g_Display); -#endif - - return true; -} - -void ImGui_ImplA5_Shutdown() -{ - ImGui_ImplA5_InvalidateDeviceObjects(); -} - -// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. -// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. -bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) -{ - ImGuiIO &io = ImGui::GetIO(); - - switch (ev->type) - { - case ALLEGRO_EVENT_MOUSE_AXES: - io.MouseWheel += ev->mouse.dz; - io.MouseWheelH += ev->mouse.dw; - return true; - case ALLEGRO_EVENT_KEY_CHAR: - if (ev->keyboard.display == g_Display) - if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) - io.AddInputCharacter((unsigned short)ev->keyboard.unichar); - return true; - case ALLEGRO_EVENT_KEY_DOWN: - case ALLEGRO_EVENT_KEY_UP: - if (ev->keyboard.display == g_Display) - io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); - return true; - } - return false; -} - -void ImGui_ImplA5_NewFrame() -{ - if (!g_Texture) - Imgui_ImplA5_CreateDeviceObjects(); - - ImGuiIO &io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - int w, h; - w = al_get_display_width(g_Display); - h = al_get_display_height(g_Display); - io.DisplaySize = ImVec2((float)w, (float)h); - - // Setup time step - double current_time = al_get_time(); - io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); - g_Time = current_time; - - // Setup inputs - ALLEGRO_KEYBOARD_STATE keys; - al_get_keyboard_state(&keys); - io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); - io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); - io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); - io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); - - ALLEGRO_MOUSE_STATE mouse; - if (keys.display == g_Display) - { - al_get_mouse_state(&mouse); - io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); - } - else - { - io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); - } - - al_get_mouse_state(&mouse); - io.MouseDown[0] = mouse.buttons & (1 << 0); - io.MouseDown[1] = mouse.buttons & (1 << 1); - io.MouseDown[2] = mouse.buttons & (1 << 2); - - // Hide OS mouse cursor if ImGui is drawing it - if (io.MouseDrawCursor) - { - al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); - } - else - { - ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; - switch (ImGui::GetMouseCursor()) - { - case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; - case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; - case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; - case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; - case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; - case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; - } - al_set_system_mouse_cursor(g_Display, cursor_id); - } - - // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. - ImGui::NewFrame(); -} diff --git a/examples/allegro5_example/imgui_impl_a5.h b/examples/allegro5_example/imgui_impl_a5.h deleted file mode 100644 index ccc3ac4..0000000 --- a/examples/allegro5_example/imgui_impl_a5.h +++ /dev/null @@ -1,26 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -#pragma once - -struct ALLEGRO_DISPLAY; -union ALLEGRO_EVENT; - -IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); -IMGUI_API void ImGui_ImplA5_Shutdown(); -IMGUI_API void ImGui_ImplA5_NewFrame(); -IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); -IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); - -// Use if you want to reset your rendering device without losing ImGui state. -IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); -IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/examples/allegro5_example/imgui_impl_allegro5.cpp b/examples/allegro5_example/imgui_impl_allegro5.cpp new file mode 100644 index 0000000..1c91652 --- /dev/null +++ b/examples/allegro5_example/imgui_impl_allegro5.cpp @@ -0,0 +1,316 @@ +// ImGui Allegro 5 bindings + +// Implemented features: +// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. +// Missing features: +// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). +// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui, Original code by @birthggd + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2018-04-18: Misc: Renamed file from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. +// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. +// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. +// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. +// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. + +#include // uint64_t +#include // memcpy +#include "imgui.h" +#include "imgui_impl_allegro5.h" +#include +#include + +#ifdef _WIN32 +#include +#endif + +// Data +static ALLEGRO_DISPLAY* g_Display = NULL; +static ALLEGRO_BITMAP* g_Texture = NULL; +static double g_Time = 0.0; +static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; +static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; + +struct ImDrawVertAllegro +{ + ImVec2 pos; + ImVec2 uv; + ALLEGRO_COLOR col; +}; + +// Render function. +// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) +void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) +{ + int op, src, dst; + al_get_blender(&op, &src, &dst); + al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); + + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* cmd_list = draw_data->CmdLists[n]; + + // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats + static ImVector vertices; + vertices.resize(cmd_list->VtxBuffer.Size); + for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) + { + const ImDrawVert &dv = cmd_list->VtxBuffer[i]; + ImDrawVertAllegro v; + v.pos = dv.pos; + v.uv = dv.uv; + unsigned char *c = (unsigned char*)&dv.col; + v.col = al_map_rgba(c[0], c[1], c[2], c[3]); + vertices[i] = v; + } + + const int* indices = NULL; + if (sizeof(ImDrawIdx) == 2) + { + // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. + // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. + static ImVector indices_converted; + indices_converted.resize(cmd_list->IdxBuffer.Size); + for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) + indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; + indices = indices_converted.Data; + } + else if (sizeof(ImDrawIdx) == 4) + { + indices = (const int*)cmd_list->IdxBuffer.Data; + } + + int idx_offset = 0; + for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) + { + const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; + if (pcmd->UserCallback) + { + pcmd->UserCallback(cmd_list, pcmd); + } + else + { + ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; + al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); + al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); + } + idx_offset += pcmd->ElemCount; + } + } + + // Restore modified state + al_set_blender(op, src, dst); + al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); +} + +bool Imgui_ImplA5_CreateDeviceObjects() +{ + // Build texture atlas + ImGuiIO &io = ImGui::GetIO(); + unsigned char *pixels; + int width, height; + io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); + + // Create texture + int flags = al_get_new_bitmap_flags(); + int fmt = al_get_new_bitmap_format(); + al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); + al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); + ALLEGRO_BITMAP* img = al_create_bitmap(width, height); + al_set_new_bitmap_flags(flags); + al_set_new_bitmap_format(fmt); + if (!img) + return false; + + ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); + if (!locked_img) + { + al_destroy_bitmap(img); + return false; + } + memcpy(locked_img->data, pixels, sizeof(int)*width*height); + al_unlock_bitmap(img); + + // Convert software texture to hardware texture. + ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); + al_destroy_bitmap(img); + if (!cloned_img) + return false; + + // Store our identifier + io.Fonts->TexID = (void*)cloned_img; + g_Texture = cloned_img; + + // Create an invisible mouse cursor + // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. + ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); + g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); + al_destroy_bitmap(mouse_cursor); + + return true; +} + +void ImGui_ImplA5_InvalidateDeviceObjects() +{ + if (g_Texture) + { + al_destroy_bitmap(g_Texture); + ImGui::GetIO().Fonts->TexID = NULL; + g_Texture = NULL; + } + if (g_MouseCursorInvisible) + { + al_destroy_mouse_cursor(g_MouseCursorInvisible); + g_MouseCursorInvisible = NULL; + } +} + +bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) +{ + g_Display = display; + + // Create custom vertex declaration. + // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. + // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. + ALLEGRO_VERTEX_ELEMENT elems[] = + { + { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, + { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, + { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, + { 0, 0, 0 } + }; + g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); + + ImGuiIO& io = ImGui::GetIO(); + io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; + io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; + io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; + io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; + io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; + io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; + io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; + io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; + io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; + io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; + io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; + io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; + io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; + io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; + io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; + io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; + io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; + io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; + io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; + io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; + io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; + +#ifdef _WIN32 + io.ImeWindowHandle = al_get_win_window_handle(g_Display); +#endif + + return true; +} + +void ImGui_ImplA5_Shutdown() +{ + ImGui_ImplA5_InvalidateDeviceObjects(); +} + +// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. +// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. +// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. +// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. +bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) +{ + ImGuiIO &io = ImGui::GetIO(); + + switch (ev->type) + { + case ALLEGRO_EVENT_MOUSE_AXES: + io.MouseWheel += ev->mouse.dz; + io.MouseWheelH += ev->mouse.dw; + return true; + case ALLEGRO_EVENT_KEY_CHAR: + if (ev->keyboard.display == g_Display) + if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) + io.AddInputCharacter((unsigned short)ev->keyboard.unichar); + return true; + case ALLEGRO_EVENT_KEY_DOWN: + case ALLEGRO_EVENT_KEY_UP: + if (ev->keyboard.display == g_Display) + io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); + return true; + } + return false; +} + +void ImGui_ImplA5_NewFrame() +{ + if (!g_Texture) + Imgui_ImplA5_CreateDeviceObjects(); + + ImGuiIO &io = ImGui::GetIO(); + + // Setup display size (every frame to accommodate for window resizing) + int w, h; + w = al_get_display_width(g_Display); + h = al_get_display_height(g_Display); + io.DisplaySize = ImVec2((float)w, (float)h); + + // Setup time step + double current_time = al_get_time(); + io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); + g_Time = current_time; + + // Setup inputs + ALLEGRO_KEYBOARD_STATE keys; + al_get_keyboard_state(&keys); + io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); + io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); + io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); + io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); + + ALLEGRO_MOUSE_STATE mouse; + if (keys.display == g_Display) + { + al_get_mouse_state(&mouse); + io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); + } + else + { + io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); + } + + al_get_mouse_state(&mouse); + io.MouseDown[0] = mouse.buttons & (1 << 0); + io.MouseDown[1] = mouse.buttons & (1 << 1); + io.MouseDown[2] = mouse.buttons & (1 << 2); + + // Hide OS mouse cursor if ImGui is drawing it + if (io.MouseDrawCursor) + { + al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); + } + else + { + ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; + switch (ImGui::GetMouseCursor()) + { + case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; + case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; + case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; + case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; + case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; + case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; + } + al_set_system_mouse_cursor(g_Display, cursor_id); + } + + // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. + ImGui::NewFrame(); +} diff --git a/examples/allegro5_example/imgui_impl_allegro5.h b/examples/allegro5_example/imgui_impl_allegro5.h new file mode 100644 index 0000000..ccc3ac4 --- /dev/null +++ b/examples/allegro5_example/imgui_impl_allegro5.h @@ -0,0 +1,26 @@ +// ImGui Allegro 5 bindings + +// Implemented features: +// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. +// Missing features: +// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). +// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui, Original code by @birthggd + +#pragma once + +struct ALLEGRO_DISPLAY; +union ALLEGRO_EVENT; + +IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); +IMGUI_API void ImGui_ImplA5_Shutdown(); +IMGUI_API void ImGui_ImplA5_NewFrame(); +IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); +IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); + +// Use if you want to reset your rendering device without losing ImGui state. +IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); +IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/CHANGELOG.txt b/CHANGELOG.txt index 54f16b4..3c98df9 100644 --- a/CHANGELOG.txt +++ b/CHANGELOG.txt @@ -52,7 +52,8 @@ - Window: Fixed popups/tooltips/menus not honoring style.DisplaySafeAreaPadding as well as it should have (part of menus displayed outside the safe area, etc.). - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks] - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439) -- Examples: Allegro5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Added support for 32-bit indices setup via defining ImDrawIdx, to avoid an unecessary conversion (Allegro 5 doesn't support 16-bit indices). +- Examples: Allegro 5: Renamed bindings from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. ----------------------------------------------------------------------- diff --git a/examples/allegro5_example/README.md b/examples/allegro5_example/README.md index 5f42b28..4f18f2a 100644 --- a/examples/allegro5_example/README.md +++ b/examples/allegro5_example/README.md @@ -2,7 +2,7 @@ # Configuration Dear ImGui outputs 16-bit vertex indices by default. -Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_a5.cpp, or compile imgui with 32-bit indices. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices. You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. We are providing `imconfig_allegro5.h` that enables 32-bit indices. Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. @@ -12,13 +12,12 @@ - On Ubuntu 14.04+ ```bash -g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_a5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example +g++ -DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" -I ../.. main.cpp imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example ``` - On Windows with Visual Studio's CLI ``` set ALLEGRODIR=path_to_your_allegro5_folder -set IMCONFIG_FILE=\"examples/allegro5_example/imconfig_allegro5.h\" -cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=%IMCONFIG_FILE% /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/allegro5_example/imconfig_allegro5.h\" /I ..\.. main.cpp imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib ``` diff --git a/examples/allegro5_example/imgui_impl_a5.cpp b/examples/allegro5_example/imgui_impl_a5.cpp deleted file mode 100644 index 59ca1ec..0000000 --- a/examples/allegro5_example/imgui_impl_a5.cpp +++ /dev/null @@ -1,315 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -// CHANGELOG -// (minor and older changes stripped away, please see git history for details) -// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. -// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. -// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. -// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. - -#include // uint64_t -#include // memcpy -#include "imgui.h" -#include "imgui_impl_a5.h" -#include -#include - -#ifdef _WIN32 -#include -#endif - -// Data -static ALLEGRO_DISPLAY* g_Display = NULL; -static ALLEGRO_BITMAP* g_Texture = NULL; -static double g_Time = 0.0; -static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; -static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; - -struct ImDrawVertAllegro -{ - ImVec2 pos; - ImVec2 uv; - ALLEGRO_COLOR col; -}; - -// Render function. -// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) -void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) -{ - int op, src, dst; - al_get_blender(&op, &src, &dst); - al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); - - for (int n = 0; n < draw_data->CmdListsCount; n++) - { - const ImDrawList* cmd_list = draw_data->CmdLists[n]; - - // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats - static ImVector vertices; - vertices.resize(cmd_list->VtxBuffer.Size); - for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) - { - const ImDrawVert &dv = cmd_list->VtxBuffer[i]; - ImDrawVertAllegro v; - v.pos = dv.pos; - v.uv = dv.uv; - unsigned char *c = (unsigned char*)&dv.col; - v.col = al_map_rgba(c[0], c[1], c[2], c[3]); - vertices[i] = v; - } - - const int* indices = NULL; - if (sizeof(ImDrawIdx) == 2) - { - // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. - // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. - static ImVector indices_converted; - indices_converted.resize(cmd_list->IdxBuffer.Size); - for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) - indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; - indices = indices_converted.Data; - } - else if (sizeof(ImDrawIdx) == 4) - { - indices = (const int*)cmd_list->IdxBuffer.Data; - } - - int idx_offset = 0; - for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) - { - const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; - if (pcmd->UserCallback) - { - pcmd->UserCallback(cmd_list, pcmd); - } - else - { - ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; - al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); - al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); - } - idx_offset += pcmd->ElemCount; - } - } - - // Restore modified state - al_set_blender(op, src, dst); - al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); -} - -bool Imgui_ImplA5_CreateDeviceObjects() -{ - // Build texture atlas - ImGuiIO &io = ImGui::GetIO(); - unsigned char *pixels; - int width, height; - io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); - - // Create texture - int flags = al_get_new_bitmap_flags(); - int fmt = al_get_new_bitmap_format(); - al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); - al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); - ALLEGRO_BITMAP* img = al_create_bitmap(width, height); - al_set_new_bitmap_flags(flags); - al_set_new_bitmap_format(fmt); - if (!img) - return false; - - ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); - if (!locked_img) - { - al_destroy_bitmap(img); - return false; - } - memcpy(locked_img->data, pixels, sizeof(int)*width*height); - al_unlock_bitmap(img); - - // Convert software texture to hardware texture. - ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); - al_destroy_bitmap(img); - if (!cloned_img) - return false; - - // Store our identifier - io.Fonts->TexID = (void*)cloned_img; - g_Texture = cloned_img; - - // Create an invisible mouse cursor - // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. - ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); - g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); - al_destroy_bitmap(mouse_cursor); - - return true; -} - -void ImGui_ImplA5_InvalidateDeviceObjects() -{ - if (g_Texture) - { - al_destroy_bitmap(g_Texture); - ImGui::GetIO().Fonts->TexID = NULL; - g_Texture = NULL; - } - if (g_MouseCursorInvisible) - { - al_destroy_mouse_cursor(g_MouseCursorInvisible); - g_MouseCursorInvisible = NULL; - } -} - -bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) -{ - g_Display = display; - - // Create custom vertex declaration. - // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. - // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. - ALLEGRO_VERTEX_ELEMENT elems[] = - { - { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, - { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, - { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, - { 0, 0, 0 } - }; - g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); - - ImGuiIO& io = ImGui::GetIO(); - io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; - io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; - io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; - io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; - io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; - io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; - io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; - io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; - io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; - io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; - io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; - io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; - io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; - io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; - io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; - io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; - io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; - io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; - io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; - io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; - io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; - -#ifdef _WIN32 - io.ImeWindowHandle = al_get_win_window_handle(g_Display); -#endif - - return true; -} - -void ImGui_ImplA5_Shutdown() -{ - ImGui_ImplA5_InvalidateDeviceObjects(); -} - -// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. -// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. -// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. -// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. -bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) -{ - ImGuiIO &io = ImGui::GetIO(); - - switch (ev->type) - { - case ALLEGRO_EVENT_MOUSE_AXES: - io.MouseWheel += ev->mouse.dz; - io.MouseWheelH += ev->mouse.dw; - return true; - case ALLEGRO_EVENT_KEY_CHAR: - if (ev->keyboard.display == g_Display) - if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) - io.AddInputCharacter((unsigned short)ev->keyboard.unichar); - return true; - case ALLEGRO_EVENT_KEY_DOWN: - case ALLEGRO_EVENT_KEY_UP: - if (ev->keyboard.display == g_Display) - io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); - return true; - } - return false; -} - -void ImGui_ImplA5_NewFrame() -{ - if (!g_Texture) - Imgui_ImplA5_CreateDeviceObjects(); - - ImGuiIO &io = ImGui::GetIO(); - - // Setup display size (every frame to accommodate for window resizing) - int w, h; - w = al_get_display_width(g_Display); - h = al_get_display_height(g_Display); - io.DisplaySize = ImVec2((float)w, (float)h); - - // Setup time step - double current_time = al_get_time(); - io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); - g_Time = current_time; - - // Setup inputs - ALLEGRO_KEYBOARD_STATE keys; - al_get_keyboard_state(&keys); - io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); - io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); - io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); - io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); - - ALLEGRO_MOUSE_STATE mouse; - if (keys.display == g_Display) - { - al_get_mouse_state(&mouse); - io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); - } - else - { - io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); - } - - al_get_mouse_state(&mouse); - io.MouseDown[0] = mouse.buttons & (1 << 0); - io.MouseDown[1] = mouse.buttons & (1 << 1); - io.MouseDown[2] = mouse.buttons & (1 << 2); - - // Hide OS mouse cursor if ImGui is drawing it - if (io.MouseDrawCursor) - { - al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); - } - else - { - ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; - switch (ImGui::GetMouseCursor()) - { - case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; - case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; - case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; - case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; - case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; - case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; - } - al_set_system_mouse_cursor(g_Display, cursor_id); - } - - // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. - ImGui::NewFrame(); -} diff --git a/examples/allegro5_example/imgui_impl_a5.h b/examples/allegro5_example/imgui_impl_a5.h deleted file mode 100644 index ccc3ac4..0000000 --- a/examples/allegro5_example/imgui_impl_a5.h +++ /dev/null @@ -1,26 +0,0 @@ -// ImGui Allegro 5 bindings - -// Implemented features: -// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. -// Missing features: -// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. - -// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. -// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). -// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. -// https://github.com/ocornut/imgui, Original code by @birthggd - -#pragma once - -struct ALLEGRO_DISPLAY; -union ALLEGRO_EVENT; - -IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); -IMGUI_API void ImGui_ImplA5_Shutdown(); -IMGUI_API void ImGui_ImplA5_NewFrame(); -IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); -IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); - -// Use if you want to reset your rendering device without losing ImGui state. -IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); -IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/examples/allegro5_example/imgui_impl_allegro5.cpp b/examples/allegro5_example/imgui_impl_allegro5.cpp new file mode 100644 index 0000000..1c91652 --- /dev/null +++ b/examples/allegro5_example/imgui_impl_allegro5.cpp @@ -0,0 +1,316 @@ +// ImGui Allegro 5 bindings + +// Implemented features: +// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. +// Missing features: +// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). +// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui, Original code by @birthggd + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2018-04-18: Misc: Renamed file from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp. +// 2018-04-18: Misc: Added support for 32-bits vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h. +// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplA5_RenderDrawData() in the .h file so you can call it yourself. +// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. +// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. + +#include // uint64_t +#include // memcpy +#include "imgui.h" +#include "imgui_impl_allegro5.h" +#include +#include + +#ifdef _WIN32 +#include +#endif + +// Data +static ALLEGRO_DISPLAY* g_Display = NULL; +static ALLEGRO_BITMAP* g_Texture = NULL; +static double g_Time = 0.0; +static ALLEGRO_MOUSE_CURSOR* g_MouseCursorInvisible = NULL; +static ALLEGRO_VERTEX_DECL* g_VertexDecl = NULL; + +struct ImDrawVertAllegro +{ + ImVec2 pos; + ImVec2 uv; + ALLEGRO_COLOR col; +}; + +// Render function. +// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) +void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data) +{ + int op, src, dst; + al_get_blender(&op, &src, &dst); + al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA); + + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* cmd_list = draw_data->CmdLists[n]; + + // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats + static ImVector vertices; + vertices.resize(cmd_list->VtxBuffer.Size); + for (int i = 0; i < cmd_list->VtxBuffer.Size; ++i) + { + const ImDrawVert &dv = cmd_list->VtxBuffer[i]; + ImDrawVertAllegro v; + v.pos = dv.pos; + v.uv = dv.uv; + unsigned char *c = (unsigned char*)&dv.col; + v.col = al_map_rgba(c[0], c[1], c[2], c[3]); + vertices[i] = v; + } + + const int* indices = NULL; + if (sizeof(ImDrawIdx) == 2) + { + // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices. + // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful. + static ImVector indices_converted; + indices_converted.resize(cmd_list->IdxBuffer.Size); + for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i) + indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i]; + indices = indices_converted.Data; + } + else if (sizeof(ImDrawIdx) == 4) + { + indices = (const int*)cmd_list->IdxBuffer.Data; + } + + int idx_offset = 0; + for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) + { + const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; + if (pcmd->UserCallback) + { + pcmd->UserCallback(cmd_list, pcmd); + } + else + { + ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId; + al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y); + al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST); + } + idx_offset += pcmd->ElemCount; + } + } + + // Restore modified state + al_set_blender(op, src, dst); + al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display)); +} + +bool Imgui_ImplA5_CreateDeviceObjects() +{ + // Build texture atlas + ImGuiIO &io = ImGui::GetIO(); + unsigned char *pixels; + int width, height; + io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); + + // Create texture + int flags = al_get_new_bitmap_flags(); + int fmt = al_get_new_bitmap_format(); + al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR); + al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE); + ALLEGRO_BITMAP* img = al_create_bitmap(width, height); + al_set_new_bitmap_flags(flags); + al_set_new_bitmap_format(fmt); + if (!img) + return false; + + ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY); + if (!locked_img) + { + al_destroy_bitmap(img); + return false; + } + memcpy(locked_img->data, pixels, sizeof(int)*width*height); + al_unlock_bitmap(img); + + // Convert software texture to hardware texture. + ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img); + al_destroy_bitmap(img); + if (!cloned_img) + return false; + + // Store our identifier + io.Fonts->TexID = (void*)cloned_img; + g_Texture = cloned_img; + + // Create an invisible mouse cursor + // Because al_hide_mouse_cursor() seems to mess up with the actual inputs.. + ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8); + g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0); + al_destroy_bitmap(mouse_cursor); + + return true; +} + +void ImGui_ImplA5_InvalidateDeviceObjects() +{ + if (g_Texture) + { + al_destroy_bitmap(g_Texture); + ImGui::GetIO().Fonts->TexID = NULL; + g_Texture = NULL; + } + if (g_MouseCursorInvisible) + { + al_destroy_mouse_cursor(g_MouseCursorInvisible); + g_MouseCursorInvisible = NULL; + } +} + +bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display) +{ + g_Display = display; + + // Create custom vertex declaration. + // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats. + // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion. + ALLEGRO_VERTEX_ELEMENT elems[] = + { + { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) }, + { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) }, + { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) }, + { 0, 0, 0 } + }; + g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro)); + + ImGuiIO& io = ImGui::GetIO(); + io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB; + io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT; + io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT; + io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP; + io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN; + io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP; + io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN; + io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME; + io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END; + io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT; + io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE; + io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE; + io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE; + io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER; + io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE; + io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A; + io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C; + io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V; + io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X; + io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y; + io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z; + +#ifdef _WIN32 + io.ImeWindowHandle = al_get_win_window_handle(g_Display); +#endif + + return true; +} + +void ImGui_ImplA5_Shutdown() +{ + ImGui_ImplA5_InvalidateDeviceObjects(); +} + +// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. +// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. +// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. +// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. +bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev) +{ + ImGuiIO &io = ImGui::GetIO(); + + switch (ev->type) + { + case ALLEGRO_EVENT_MOUSE_AXES: + io.MouseWheel += ev->mouse.dz; + io.MouseWheelH += ev->mouse.dw; + return true; + case ALLEGRO_EVENT_KEY_CHAR: + if (ev->keyboard.display == g_Display) + if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000) + io.AddInputCharacter((unsigned short)ev->keyboard.unichar); + return true; + case ALLEGRO_EVENT_KEY_DOWN: + case ALLEGRO_EVENT_KEY_UP: + if (ev->keyboard.display == g_Display) + io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN); + return true; + } + return false; +} + +void ImGui_ImplA5_NewFrame() +{ + if (!g_Texture) + Imgui_ImplA5_CreateDeviceObjects(); + + ImGuiIO &io = ImGui::GetIO(); + + // Setup display size (every frame to accommodate for window resizing) + int w, h; + w = al_get_display_width(g_Display); + h = al_get_display_height(g_Display); + io.DisplaySize = ImVec2((float)w, (float)h); + + // Setup time step + double current_time = al_get_time(); + io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); + g_Time = current_time; + + // Setup inputs + ALLEGRO_KEYBOARD_STATE keys; + al_get_keyboard_state(&keys); + io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL); + io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT); + io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR); + io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN); + + ALLEGRO_MOUSE_STATE mouse; + if (keys.display == g_Display) + { + al_get_mouse_state(&mouse); + io.MousePos = ImVec2((float)mouse.x, (float)mouse.y); + } + else + { + io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); + } + + al_get_mouse_state(&mouse); + io.MouseDown[0] = mouse.buttons & (1 << 0); + io.MouseDown[1] = mouse.buttons & (1 << 1); + io.MouseDown[2] = mouse.buttons & (1 << 2); + + // Hide OS mouse cursor if ImGui is drawing it + if (io.MouseDrawCursor) + { + al_set_mouse_cursor(g_Display, g_MouseCursorInvisible); + } + else + { + ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT; + switch (ImGui::GetMouseCursor()) + { + case ImGuiMouseCursor_TextInput: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break; + case ImGuiMouseCursor_ResizeAll: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break; + case ImGuiMouseCursor_ResizeNS: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break; + case ImGuiMouseCursor_ResizeEW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break; + case ImGuiMouseCursor_ResizeNESW: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break; + case ImGuiMouseCursor_ResizeNWSE: cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break; + } + al_set_system_mouse_cursor(g_Display, cursor_id); + } + + // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application. + ImGui::NewFrame(); +} diff --git a/examples/allegro5_example/imgui_impl_allegro5.h b/examples/allegro5_example/imgui_impl_allegro5.h new file mode 100644 index 0000000..ccc3ac4 --- /dev/null +++ b/examples/allegro5_example/imgui_impl_allegro5.h @@ -0,0 +1,26 @@ +// ImGui Allegro 5 bindings + +// Implemented features: +// [X] User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp. +// Missing features: +// [ ] Clipboard support via al_set_clipboard_text/al_clipboard_has_text. + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown(). +// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui, Original code by @birthggd + +#pragma once + +struct ALLEGRO_DISPLAY; +union ALLEGRO_EVENT; + +IMGUI_API bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display); +IMGUI_API void ImGui_ImplA5_Shutdown(); +IMGUI_API void ImGui_ImplA5_NewFrame(); +IMGUI_API void ImGui_ImplA5_RenderDrawData(ImDrawData* draw_data); +IMGUI_API bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event); + +// Use if you want to reset your rendering device without losing ImGui state. +IMGUI_API bool Imgui_ImplA5_CreateDeviceObjects(); +IMGUI_API void ImGui_ImplA5_InvalidateDeviceObjects(); diff --git a/examples/allegro5_example/main.cpp b/examples/allegro5_example/main.cpp index 6169ebc..5ecd412 100644 --- a/examples/allegro5_example/main.cpp +++ b/examples/allegro5_example/main.cpp @@ -5,7 +5,7 @@ #include #include #include "imgui.h" -#include "imgui_impl_a5.h" +#include "imgui_impl_allegro5.h" int main(int, char**) {