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

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This commit is contained in:
omar 2017-07-26 23:07:35 +08:00
parent 69dd1ed583
commit 27e5b09af1
2 changed files with 14 additions and 2 deletions
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15
imgui.cpp
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@ -9094,8 +9094,19 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
bool hovered, held;
bool pressed = ButtonBehavior(bb, id, &hovered, &held);
float grid_step = ImMin(g.FontSize, ImMin(size.x, size.y) * 0.5f);
RenderColorRectWithAlphaCheckerboard(bb.Min, bb.Max, GetColorU32((flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) ? ImVec4(col.x, col.y, col.z, 1.0f) : col), grid_step, style.FrameRounding);
float mid_x = (float)(int)((bb.Min.x + bb.Max.x) * 0.5f);
float grid_step = ImMax((bb.Max.x - mid_x) * 0.50f, ImMin(size.x, size.y) * 0.50f);
ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
if ((flags & ImGuiColorEditFlags_HalfAlphaPreview) && (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) == 0 && col.w < 1.0f)
{
window->DrawList->AddRectFilled(bb.Min, ImVec2(mid_x, bb.Max.y), GetColorU32(col_without_alpha), style.FrameRounding, ImGuiCorner_TopLeft|ImGuiCorner_BottomLeft);
RenderColorRectWithAlphaCheckerboard(ImVec2(mid_x, bb.Min.y), bb.Max, GetColorU32(col), grid_step, style.FrameRounding, ImGuiCorner_TopRight|ImGuiCorner_BottomRight);
}
else
{
RenderColorRectWithAlphaCheckerboard(bb.Min, bb.Max, GetColorU32((flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) ? col_without_alpha : col), grid_step, style.FrameRounding);
}
RenderFrameBorder(bb.Min, bb.Max, style.FrameRounding);
if (hovered && !(flags & ImGuiColorEditFlags_NoTooltip))

1
imgui.h
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@ -677,6 +677,7 @@ enum ImGuiColorEditFlags_
ImGuiColorEditFlags_NoInputs = 1 << 10, // ColorEdit, ColorPicker: disable inputs sliders/text widgets, show only the colored square.
ImGuiColorEditFlags_NoTooltip = 1 << 11, // ColorEdit, ColorButton: disable tooltip when hovering the colored square.
ImGuiColorEditFlags_NoLabel = 1 << 12, // ColorEdit, ColorPicker: disable display of inline text label (the label is still used in tooltip and picker).
ImGuiColorEditFlags_HalfAlphaPreview= 1 << 13,
ImGuiColorEditFlags_ModeMask_ = ImGuiColorEditFlags_RGB|ImGuiColorEditFlags_HSV|ImGuiColorEditFlags_HEX,
ImGuiColorEditFlags_StoredMask_ = ImGuiColorEditFlags_RGB|ImGuiColorEditFlags_HSV|ImGuiColorEditFlags_HEX|ImGuiColorEditFlags_Float
};