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ColorEdit: Fix multiple issues. (#4014)

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* Change g.ColorEditLastColor type to ImU32 and store RGB color value.
  - Fixes inability to change hue when saturation is 0. (#4014)
  - Fixes edgecases where lossy color conversion prevent restoration of hue/saturation.
  - Fixes hue value jitter when modifying color using SV square.
* Fix hue resetting to 0 when it is set to 255 by explicitly restoring hue if it is 0 and previous value was 1.
* Further reduce hue jitter by restoring hue when color is modified using SV square.
This commit is contained in:
Rokas Kupstys
2021-04-08 14:37:03 +03:00
committed by ocornut
parent 15132217a3
commit 30546bc0e7
4 changed files with 42 additions and 28 deletions
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8
imgui_internal.h
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@ -1606,9 +1606,9 @@ struct ImGuiContext
ImFont InputTextPasswordFont;
ImGuiID TempInputId; // Temporary text input when CTRL+clicking on a slider, etc.
ImGuiColorEditFlags ColorEditOptions; // Store user options for color edit widgets
float ColorEditLastHue; // Backup of last Hue associated to LastColor[3], so we can restore Hue in lossy RGB<>HSV round trips
float ColorEditLastSat; // Backup of last Saturation associated to LastColor[3], so we can restore Saturation in lossy RGB<>HSV round trips
float ColorEditLastColor[3];
float ColorEditLastHue; // Backup of last Hue associated to LastColor, so we can restore Hue in lossy RGB<>HSV round trips
float ColorEditLastSat; // Backup of last Saturation associated to LastColor, so we can restore Saturation in lossy RGB<>HSV round trips
ImU32 ColorEditLastColor; // RGB value with alpha set to 0.
ImVec4 ColorPickerRef; // Initial/reference color at the time of opening the color picker.
ImGuiComboPreviewData ComboPreviewData;
float SliderCurrentAccum; // Accumulated slider delta when using navigation controls.
@ -1777,7 +1777,7 @@ struct ImGuiContext
TempInputId = 0;
ColorEditOptions = ImGuiColorEditFlags_DefaultOptions_;
ColorEditLastHue = ColorEditLastSat = 0.0f;
ColorEditLastColor[0] = ColorEditLastColor[1] = ColorEditLastColor[2] = FLT_MAX;
ColorEditLastColor = 0;
SliderCurrentAccum = 0.0f;
SliderCurrentAccumDirty = false;
DragCurrentAccumDirty = false;