ColorPicker: Added ImGuiColorEditFlags_NoSidePreview flag + optional reference color. Added more demo code. (#346)

ColorEdit4: Can open context menu from inputs/drags as well (#346)

ColorEdit4: Fixed not returning true when clicking on the Original/Ref color in Picker spawned from ColorEdit4 + shallow tidying up (#346)

ColorEdit4: Picker spawned from ColorEdit4 has a preview for original/previous color with revert button - WIP not really happy with it being in ColorEdit4 code (#346)

ColorPicker: Comments. Single input value mode allow access to context-menu options. (#346)

ColorPicker: Forward AlphaPreview flag to its individual inputs/sliders. Split code into extra lines to make logic more readable. (#346)

ColorEdit4: Store edit options per window. Demo: Letting user change edit mode. (#346)

ColorEdit, ColorPicker: AlphaPreview, AlphaPreviewHalf are explicit. Updated demo and using in style editor. 3x3 checkerboard more readable in half mode. (#346)

ColorEdit4: Minor tidying up. (#346)

ColorButton: Pretty much gave up with getting the checkerboard + AA + rounding + blending + offset all working together with every combination under the sun. It works as long as you don't sneeze. (#346)

ColorButton: Fixed rounding corners artefact when there is a single cell.

ColorTooltip: Honor ImGuiColorEditFlags_HalfAlphaPreview flag by calling ColorButton(). Added HalfAlphaPreview to demo. (#346)

ColorButton: Undo ce203f9

ColorEdit4: Fix not forwarding ImGuiColorEditFlags_AlphaBar flag to ColorPicker4 (#346)

ColorButton: ImGuiColorEditFlags_HalfAlphaPreview flag to render both opaque and alpha-with-checkerboard versions of the peak preview (#346)

RenderColorRectWithAlphaCheckerboard() in one layer to shunt out anti-alasing artefacts when rounded. Added ImLerp(int,int,float). (#346)

ColorEdit, ColorPicker: Fixed broken build due to commiting an undesirable change in 78a8f79 (#346)

ColorButton, ColorPicker: painfully made RenderColorRectWithAlphaCheckerboard more friendly to using Rounding and Border in style, still not perfect :( (#346) + comments

ColorEdit, ColorPicker: added ImGuiColorEditFlags_NoAlphaPreview flag (#346). Reorder flags again.

ColorButton: Push a text baseline offset if higher than g.FontSize. (#346)

ColorEdit, ColorPicker, ColorButton: Display grid under transparent colors (WIP) (#346)

GetColorU32(ImGuiCol): avoid using GImGui twice since some implementation make it a TLS-ish variable with non-trivial accessors.

Added GetColorU32(u32) variant that does the style alpha multiply without a floating point round trip. Not 100% sure about that before the signature may seem ambiguous? But also make using imgui+drawlist more consistent in end-user extensions.

ColorEdit, ColorPicker: Context / options menu allows to toggle between u8 and float display. Using short words to avoid localization. (#346)

ColorPicker: Handle out of 0..1 range colors when displaying the cross hair. (#346)

ColorEdit: Added ImGuiColorEditFlags_Float flag to display and edit drag values in 0.0..1.0 range instead of 0..255. (#346)

ColorPicker,ColorButton: Honor Border/Shadow style settings (#346)

ColorPicker: Added ImGuiColorEditFlags_AlphaBar option (#346)

ColorPicker: Honor ImGuiColorEditFlags_NoColorSquare flag + comments (#346)

ColorPicker: new prototype for ColorButton() .Added _NoTooltip, _NoLabel flags. Changing _Alpha flag to _NoAlpha makes so much much sense and allow to revert default parameters to zero. ColorEdit4/Picker4 don't attempt to read/write fourth component, making ColorEdit3/Picker3 shorter/faster. Tooltip and Picker called from ColorEdit can have a title. Picker shows colored square. Moved ColorTooltip() to imgui_internal.h (#346)