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Demo: Picker with palette demo supports drag and drop. (#143, #346)

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This commit is contained in:
omar 2017-12-08 12:49:35 +01:00
parent 7bf85db6c4
commit a4863e8084
1 changed files with 19 additions and 2 deletions
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21
imgui_demo.cpp
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@ -775,12 +775,19 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::ColorEdit4("MyColor##3", (float*)&color, ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel | misc_flags);
ImGui::Text("Color button with Custom Picker Popup:");
// Generate a dummy palette
static bool saved_palette_inited = false;
static ImVec4 saved_palette[32];
static ImVec4 backup_color;
if (!saved_palette_inited)
for (int n = 0; n < IM_ARRAYSIZE(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_inited = true;
static ImVec4 backup_color;
bool open_popup = ImGui::ColorButton("MyColor##3b", color, misc_flags);
ImGui::SameLine();
open_popup |= ImGui::Button("Palette");
@ -809,8 +816,18 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::PushID(n);
if ((n % 8) != 0)
ImGui::SameLine(0.0f, ImGui::GetStyle().ItemSpacing.y);
if (ImGui::ColorButton("##palette", saved_palette[n], ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoTooltip, ImVec2(20,20)))
if (ImGui::ColorButton("##palette", saved_palette[n], ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoTooltip, ImVec2(20,20)))
color = ImVec4(saved_palette[n].x, saved_palette[n].y, saved_palette[n].z, color.w); // Preserve alpha!
if (ImGui::BeginDragDropTarget())
{
if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 3);
if (const ImGuiPayload* payload = AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 4);
EndDragDropTarget();
}
ImGui::PopID();
}
ImGui::EndGroup();