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

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docking
omar 7 years ago
parent b1cbd87a94
commit c36d59a42a
3 changed files with 32 additions and 25 deletions
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17
imgui.cpp
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@ -9005,7 +9005,7 @@ void ImGui::ColorTooltip(const char* text, const float col[4], ImGuiColorEditFla
{
ImGuiContext& g = *GImGui;
int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
int cr = IM_F32_TO_INT8_SAT(col[0]), cg = IM_F32_TO_INT8_SAT(col[1]), cb = IM_F32_TO_INT8_SAT(col[2]), ca = (flags & ImGuiColorEditFlags_NoAlpha) ? 255 : IM_F32_TO_INT8_SAT(col[3]);
BeginTooltipEx(true);
const char* text_end = text ? FindRenderedTextEnd(text, NULL) : text;
@ -9016,7 +9016,7 @@ void ImGui::ColorTooltip(const char* text, const float col[4], ImGuiColorEditFla
}
ImVec2 sz(g.FontSize * 3, g.FontSize * 3);
ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_HalfAlphaPreview)) | ImGuiColorEditFlags_NoTooltip, sz);
ColorButton("##preview", ImVec4(col[0], col[1], col[2], col[3]), (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf)) | ImGuiColorEditFlags_NoTooltip, sz);
SameLine();
if (flags & ImGuiColorEditFlags_NoAlpha)
Text("#%02X%02X%02X\nR: %d, G: %d, B: %d\n(%.3f, %.3f, %.3f)", cr, cg, cb, cr, cg, cb, col[0], col[1], col[2]);
@ -9068,7 +9068,7 @@ void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU
rounding_corners_flags_cell &= rounding_corners_flags;
window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
}
}
}
}
else
{
@ -9099,11 +9099,14 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
bool hovered, held;
bool pressed = ButtonBehavior(bb, id, &hovered, &held);
if (flags & ImGuiColorEditFlags_NoAlpha)
flags &= ~(ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf);
ImVec4 col_without_alpha(col.x, col.y, col.z, 1.0f);
float grid_step = ImMin(size.x, size.y) / 2.0f;
float grid_step = ImMin(size.x, size.y) / 2.99f;
float rounding = ImMin(g.Style.FrameRounding, grid_step * 0.5f);
if ((flags & ImGuiColorEditFlags_HalfAlphaPreview) && (flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) == 0 && col.w < 1.0f)
if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
{
float mid_x = (float)(int)((bb.Min.x + bb.Max.x) * 0.5f + 0.5f);
RenderColorRectWithAlphaCheckerboard(ImVec2(bb.Min.x + grid_step, bb.Min.y), bb.Max, GetColorU32(col), grid_step, ImVec2(-grid_step, 0.0f), rounding, ImGuiCorner_TopRight|ImGuiCorner_BottomRight);
@ -9111,12 +9114,12 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
}
else
{
RenderColorRectWithAlphaCheckerboard(bb.Min, bb.Max, GetColorU32((flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview)) ? col_without_alpha : col), grid_step, ImVec2(0,0), rounding);
RenderColorRectWithAlphaCheckerboard(bb.Min, bb.Max, GetColorU32((flags & ImGuiColorEditFlags_AlphaPreview) ? col : col_without_alpha), grid_step, ImVec2(0,0), rounding);
}
RenderFrameBorder(bb.Min, bb.Max, rounding);
if (hovered && !(flags & ImGuiColorEditFlags_NoTooltip))
ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoAlphaPreview | ImGuiColorEditFlags_HalfAlphaPreview));
ColorTooltip(desc_id, &col.x, flags & (ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_AlphaPreview | ImGuiColorEditFlags_AlphaPreviewHalf));
return pressed;
}

21
imgui.h
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@ -668,16 +668,17 @@ enum ImGuiColorEditFlags_
ImGuiColorEditFlags_HSV = 1 << 1, // "
ImGuiColorEditFlags_HEX = 1 << 2, // "
ImGuiColorEditFlags_Float = 1 << 3, // ColorEdit, ColorPicker, ColorButton: display values formatted as 0.0f..1.0f floats instead of 0..255 integers. No round-trip of value via integers.
ImGuiColorEditFlags_AlphaBar = 1 << 4, // ColorPicker: Show vertical alpha bar/gradient.
ImGuiColorEditFlags_NoAlpha = 1 << 5, // ColorEdit, ColorPicker, ColorButton: completely ignore Alpha component (read 3 components).
ImGuiColorEditFlags_NoAlphaPreview = 1 << 6, // ColorEdit, ColorPicker, ColorButton: do not display transparent colors over a checkerboard, always display the preview as opaque.
ImGuiColorEditFlags_NoPicker = 1 << 7, // ColorEdit: disable picker when clicking on colored square.
ImGuiColorEditFlags_NoOptions = 1 << 8, // ColorEdit: disable toggling options menu when right-clicking on colored square.
ImGuiColorEditFlags_NoColorSquare = 1 << 9, // ColorEdit, ColorPicker: disable colored square.
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_AlphaBar = 1 << 4, // ColorEdit, ColorPicker: show vertical alpha bar/gradient in picker.
ImGuiColorEditFlags_AlphaPreview = 1 << 5, // ColorEdit, ColorPicker, ColorButton: display preview as a transparent color over a checkerboard, instead of opaque.
ImGuiColorEditFlags_AlphaPreviewHalf= 1 << 6, // ColorEdit, ColorPicker, ColorButton: display half opaque / half checkerboard
ImGuiColorEditFlags_NoAlpha = 1 << 7, // ColorEdit, ColorPicker, ColorButton: completely ignore Alpha component (read 3 components).
ImGuiColorEditFlags_NoPicker = 1 << 8, // ColorEdit: disable picker when clicking on colored square.
ImGuiColorEditFlags_NoOptions = 1 << 9, // ColorEdit: disable toggling options menu when right-clicking on colored square.
ImGuiColorEditFlags_NoColorSquare = 1 << 10, // ColorEdit, ColorPicker: disable colored square.
ImGuiColorEditFlags_NoInputs = 1 << 12, // ColorEdit, ColorPicker: disable inputs sliders/text widgets, show only the colored square.
ImGuiColorEditFlags_NoTooltip = 1 << 13, // ColorEdit, ColorButton: disable tooltip when hovering the colored square.
ImGuiColorEditFlags_NoLabel = 1 << 14, // ColorEdit, ColorPicker: disable display of inline text label (the label is still used in tooltip and picker).
ImGuiColorEditFlags_NoRefColor = 1 << 15,
ImGuiColorEditFlags_ModeMask_ = ImGuiColorEditFlags_RGB|ImGuiColorEditFlags_HSV|ImGuiColorEditFlags_HEX,
ImGuiColorEditFlags_StoredMask_ = ImGuiColorEditFlags_RGB|ImGuiColorEditFlags_HSV|ImGuiColorEditFlags_HEX|ImGuiColorEditFlags_Float
};

19
imgui_demo.cpp
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@ -666,7 +666,7 @@ void ImGui::ShowTestWindow(bool* p_open)
static bool alpha_half_preview = false;
ImGui::Checkbox("With Alpha Preview", &alpha_preview);
ImGui::Checkbox("With Half Alpha Preview", &alpha_half_preview);
int alpha_flags = alpha_half_preview ? ImGuiColorEditFlags_HalfAlphaPreview : (alpha_preview ? 0 : ImGuiColorEditFlags_NoAlphaPreview);
int alpha_flags = alpha_half_preview ? ImGuiColorEditFlags_AlphaPreviewHalf : (alpha_preview ? ImGuiColorEditFlags_AlphaPreview : 0);
ImGui::Text("Color widget:");
ImGui::SameLine(); ShowHelpMarker("Click on the colored square to open a color picker.\nRight-click on the colored square to show options.\nCTRL+click on individual component to input value.\n");
@ -1752,14 +1752,17 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
ImGui::SameLine(); ImGui::PushItemWidth(120); ImGui::Combo("##output_type", &output_dest, "To Clipboard\0To TTY\0"); ImGui::PopItemWidth();
ImGui::SameLine(); ImGui::Checkbox("Only Modified Fields", &output_only_modified);
static ImGuiColorEditFlags color_edit_flags = ImGuiColorEditFlags_RGB;
ImGui::RadioButton("RGB", &color_edit_flags, ImGuiColorEditFlags_RGB);
ImGui::SameLine();
ImGui::RadioButton("HSV", &color_edit_flags, ImGuiColorEditFlags_HSV);
ImGui::SameLine();
ImGui::RadioButton("HEX", &color_edit_flags, ImGuiColorEditFlags_HEX);
static ImGuiColorEditFlags color_flags = ImGuiColorEditFlags_RGB;
ImGui::RadioButton("RGB", &color_flags, ImGuiColorEditFlags_RGB); ImGui::SameLine();
ImGui::RadioButton("HSV", &color_flags, ImGuiColorEditFlags_HSV); ImGui::SameLine();
ImGui::RadioButton("HEX", &color_flags, ImGuiColorEditFlags_HEX);
//ImGui::Text("Tip: Click on colored square to change edit mode.");
static ImGuiColorEditFlags alpha_flags = 0;
ImGui::RadioButton("Opaque", &alpha_flags, 0); ImGui::SameLine();
ImGui::RadioButton("Alpha", &alpha_flags, ImGuiColorEditFlags_AlphaPreview); ImGui::SameLine();
ImGui::RadioButton("Half", &alpha_flags, ImGuiColorEditFlags_AlphaPreviewHalf);
static ImGuiTextFilter filter;
filter.Draw("Filter colors", 200);
@ -1771,7 +1774,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
if (!filter.PassFilter(name))
continue;
ImGui::PushID(i);
ImGui::ColorEdit4(name, (float*)&style.Colors[i], color_edit_flags | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_AlphaBar);
ImGui::ColorEdit4(name, (float*)&style.Colors[i], color_flags | ImGuiColorEditFlags_NoOptions | ImGuiColorEditFlags_AlphaBar | alpha_flags);
if (memcmp(&style.Colors[i], (ref ? &ref->Colors[i] : &default_style.Colors[i]), sizeof(ImVec4)) != 0)
{
ImGui::SameLine(); if (ImGui::Button("Revert")) style.Colors[i] = ref ? ref->Colors[i] : default_style.Colors[i];

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