Function DemoWindowWidgetsColorAndPickers

Source/3rdParty/imgui/imgui_demo.cpp:1100–1295

//-----------------------------------------------------------------------------

static void DemoWindowWidgetsColorAndPickers()
{
    if (ImGui::TreeNode("Color/Picker Widgets"))
    {
        IMGUI_DEMO_MARKER("Widgets/Color");
        static ImVec4 color = ImVec4(114.0f / 255.0f, 144.0f / 255.0f, 154.0f / 255.0f, 200.0f / 255.0f);
        static ImGuiColorEditFlags base_flags = ImGuiColorEditFlags_None;

        ImGui::SeparatorText("Options");
        ImGui::CheckboxFlags("ImGuiColorEditFlags_NoAlpha", &base_flags, ImGuiColorEditFlags_NoAlpha);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_AlphaOpaque", &base_flags, ImGuiColorEditFlags_AlphaOpaque);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_AlphaNoBg", &base_flags, ImGuiColorEditFlags_AlphaNoBg);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_AlphaPreviewHalf", &base_flags, ImGuiColorEditFlags_AlphaPreviewHalf);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_NoOptions", &base_flags, ImGuiColorEditFlags_NoOptions); ImGui::SameLine(); HelpMarker("Right-click on the individual color widget to show options.");
        ImGui::CheckboxFlags("ImGuiColorEditFlags_NoDragDrop", &base_flags, ImGuiColorEditFlags_NoDragDrop);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_NoColorMarkers", &base_flags, ImGuiColorEditFlags_NoColorMarkers);
        ImGui::CheckboxFlags("ImGuiColorEditFlags_HDR", &base_flags, ImGuiColorEditFlags_HDR); ImGui::SameLine(); HelpMarker("Currently all this does is to lift the 0..1 limits on dragging widgets.");

        IMGUI_DEMO_MARKER("Widgets/Color/ColorEdit");
        ImGui::SeparatorText("Inline color editor");
        ImGui::Text("Color widget:");
        ImGui::SameLine(); HelpMarker(
            "Click on the color square to open a color picker.\n"
            "Ctrl+Click on individual component to input value.\n");
        ImGui::ColorEdit3("MyColor##1", (float*)&color, base_flags);

        IMGUI_DEMO_MARKER("Widgets/Color/ColorEdit (HSV, with Alpha)");
        ImGui::Text("Color widget HSV with Alpha:");
        ImGui::ColorEdit4("MyColor##2", (float*)&color, ImGuiColorEditFlags_DisplayHSV | base_flags);

        IMGUI_DEMO_MARKER("Widgets/Color/ColorEdit (float display)");
        ImGui::Text("Color widget with Float Display:");
        ImGui::ColorEdit4("MyColor##2f", (float*)&color, ImGuiColorEditFlags_Float | base_flags);

        IMGUI_DEMO_MARKER("Widgets/Color/ColorButton (with Picker)");
        ImGui::Text("Color button with Picker:");
        ImGui::SameLine(); HelpMarker(
            "With the ImGuiColorEditFlags_NoInputs flag you can hide all the slider/text inputs.\n"
            "With the ImGuiColorEditFlags_NoLabel flag you can pass a non-empty label which will only "
            "be used for the tooltip and picker popup.");
        ImGui::ColorEdit4("MyColor##3", (float*)&color, ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel | base_flags);

        IMGUI_DEMO_MARKER("Widgets/Color/ColorButton (with custom Picker popup)");
        ImGui::Text("Color button with Custom Picker Popup:");

        // Generate a default palette. The palette will persist and can be edited.
        static bool saved_palette_init = true;
        static ImVec4 saved_palette[32] = {};
        if (saved_palette_init)
        {
            for (int n = 0; n < IM_COUNTOF(saved_palette); n++)
            {
                ImGui::ColorConvertHSVtoRGB(n / 31.0f, 0.8f, 0.8f,
                    saved_palette[n].x, saved_palette[n].y, saved_palette[n].z);
                saved_palette[n].w = 1.0f; // Alpha
            }
            saved_palette_init = false;
        }