Nav: Minor tidying up. (#787)

Merge branch 'master' into navigation ...

# Conflicts:
#	imgui.cpp

Style Added style.MouseCursorScale, may remove (#939).

Nav: TreeNode: Added ImGuiTreeNodeFlags_NavCloseFromChild flag, allow closing a TreeNode() from any of child. The explicit flag is not great, perhaps allowing some form of inheritance would help. (#787, #1079)

Merge branch 'master' into context

Merge branch 'master' into navigation ...

# Conflicts:
#	imgui.cpp

Comments

Nav: Removed io.NavUsable --> io.NavActive, io.NavActive --> io.NavVisible. (#787). NavActive takes account of NavFlags enable flags.

Nav: Added proper version of ImGuiWindowFlags_NavFlattened that handles scrolling nicely. Marked as private as I'm not happy with the name. (#787)

Merge branch 'master' into navigation

Added IMGUI_USER_CONFIG to define a custom configuration filename. (#255, #1573, #1144, #41)

ImVector comment (#1577)

Nav: Keyboard: Added CTRL+TAB (and CTRL+Shift+TAB) style window selection. (#787)

Nav: Fixed renaming of c09016b that were incorrect. ImGuiNavInput_PadLeft -> PadDpadLeft, _PadScrollLeft -> PadLStickLeft. (#787)

Nav: Comments. (#787)

Merge branch 'master' into context

Nav: Added io.NavFlags to hold various options. Added ImGuiNavFlags_EnableGamepad and ImGuiNavFlags_EnableKeyboard for bindings to use (#787)

Nav: Renamed ImGuiNavInput_PadLeft / etc. to ImGuiNavInput_PadLStickLeft. Renamed ImGuiNavInput_PadScrollLeft to ImGuiNavInput_PadRStickLeft, aka removing trying-too-hard semantic from the enums. (#787)

Nav: Added ImGuiNavInput_KeyLeft/Right/Up/Down set so we can differenciate gamepad/keyboard inputs. (#787)

Merge branch 'master' into navigation

Nav: Reordered NavInput enums to match directional order of ImGuiDir_ and ImGuiKey_ + comments (#787)

Nav: Tweak GetNavInputAmount(). Split debug defines.

Comments (#1567)

Merge branch 'master' into navigation ...

# Conflicts:
#	imgui.cpp
#	imgui_demo.cpp

Added SetNextWindowBgAlpha() helper. (#1567) particularly helpul with the marking of the old 5-parameters version of Begin() as obsolete.

Comments + added legacy renamed GetItemsLineHeightWithSpacing() as stated in the doc, fixes 6190ab0

Nav: Comments, tweaks

Style: Exposed ImGuiStyleVar_WindowTitleAlign, ImGuiStyleVar_ScrollbarSize, ImGuiStyleVar_ScrollbarRounding, ImGuiStyleVar_GrabRounding + added an assert to reduce accidental breakage. (#1181)

Merge branch 'master' into navigation

Reorganized context handling to be more explicit, ...

- YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
- removed Shutdown() function, as DestroyContext() serve this purpose.
- you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwhise CreateContext() will create its own font atlas instance.
- removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
- removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts
(#1565, #586, #992, #1007, #1558)