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Drag and Drop, Style: added basic styling options to DragDrop target rect. (#9056)

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This commit is contained in:
aaronkirkham
2025-11-05 23:16:48 +00:00
committed by ocornut
parent 59db6ceeb1
commit 7954d6782e
3 changed files with 20 additions and 3 deletions
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14
imgui.cpp
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@@ -1450,6 +1450,9 @@ ImGuiStyle::ImGuiStyle()
AntiAliasedFill = true; // Enable anti-aliased filled shapes (rounded rectangles, circles, etc.).
CurveTessellationTol = 1.25f; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
CircleTessellationMaxError = 0.30f; // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
DragDropTargetRectRounding = 0.0f; // Corner radius of the drag-drop hover frame
DragDropTargetRectLineThickness = 2.0f; // Thickness of the drop-drop hover frame lines
DragDropTargetRectExpansionSize = 3.5f; // The size in which the drag-drop hover rect will expand over the target
// Behaviors
HoverStationaryDelay = 0.15f; // Delay for IsItemHovered(ImGuiHoveredFlags_Stationary). Time required to consider mouse stationary.
@@ -3711,6 +3714,7 @@ const char* ImGui::GetStyleColorName(ImGuiCol idx)
case ImGuiCol_TextSelectedBg: return "TextSelectedBg";
case ImGuiCol_TreeLines: return "TreeLines";
case ImGuiCol_DragDropTarget: return "DragDropTarget";
case ImGuiCol_DragDropTargetBg: return "DragDropTargetBg";
case ImGuiCol_UnsavedMarker: return "UnsavedMarker";
case ImGuiCol_NavCursor: return "NavCursor";
case ImGuiCol_NavWindowingHighlight: return "NavWindowingHighlight";
@@ -14893,7 +14897,7 @@ void ImGui::RenderDragDropTargetRectForItem(const ImRect& bb)
ImGuiWindow* window = g.CurrentWindow;
ImRect bb_display = bb;
bb_display.ClipWith(g.DragDropTargetClipRect); // Clip THEN expand so we have a way to visualize that target is not entirely visible.
bb_display.Expand(3.5f);
bb_display.Expand(g.Style.DragDropTargetRectExpansionSize);
bool push_clip_rect = !window->ClipRect.Contains(bb_display);
if (push_clip_rect)
window->DrawList->PushClipRectFullScreen();
@@ -14904,7 +14908,13 @@ void ImGui::RenderDragDropTargetRectForItem(const ImRect& bb)
void ImGui::RenderDragDropTargetRectEx(ImDrawList* draw_list, const ImRect& bb)
{
draw_list->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTarget), 0.0f, 0, 2.0f); // FIXME-DPI
ImGuiContext& g = *GImGui;
const ImVec4& color_bg = GetStyleColorVec4(ImGuiCol_DragDropTargetBg);
if (color_bg.w > 0.0f)
draw_list->AddRectFilled(bb.Min, bb.Max, GetColorU32(color_bg), g.Style.DragDropTargetRectRounding, 0);
draw_list->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTarget), g.Style.DragDropTargetRectRounding, 0, g.Style.DragDropTargetRectLineThickness); // FIXME-DPI
}
const ImGuiPayload* ImGui::GetDragDropPayload()

6
imgui.h
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@@ -1776,7 +1776,8 @@ enum ImGuiCol_
ImGuiCol_TextLink, // Hyperlink color
ImGuiCol_TextSelectedBg, // Selected text inside an InputText
ImGuiCol_TreeLines, // Tree node hierarchy outlines when using ImGuiTreeNodeFlags_DrawLines
ImGuiCol_DragDropTarget, // Rectangle highlighting a drop target
ImGuiCol_DragDropTarget, // Rectangle border highlighting a drop target
ImGuiCol_DragDropTargetBg, // Rectangle background highlighting a drop target
ImGuiCol_UnsavedMarker, // Unsaved Document marker (in window title and tabs)
ImGuiCol_NavCursor, // Color of keyboard/gamepad navigation cursor/rectangle, when visible
ImGuiCol_NavWindowingHighlight, // Highlight window when using CTRL+TAB
@@ -2322,6 +2323,9 @@ struct ImGuiStyle
bool AntiAliasedFill; // Enable anti-aliased edges around filled shapes (rounded rectangles, circles, etc.). Disable if you are really tight on CPU/GPU. Latched at the beginning of the frame (copied to ImDrawList).
float CurveTessellationTol; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
float CircleTessellationMaxError; // Maximum error (in pixels) allowed when using AddCircle()/AddCircleFilled() or drawing rounded corner rectangles with no explicit segment count specified. Decrease for higher quality but more geometry.
float DragDropTargetRectRounding; // Corner radius of the drag-drop target rect
float DragDropTargetRectLineThickness; // Thickness of the drop-drop target rect lines
float DragDropTargetRectExpansionSize; // The size in which the drag-drop target rect will expand over the target
// Colors
ImVec4 Colors[ImGuiCol_COUNT];

3
imgui_draw.cpp
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@@ -240,6 +240,7 @@ void ImGui::StyleColorsDark(ImGuiStyle* dst)
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border];
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_DragDropTargetBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_UnsavedMarker] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
colors[ImGuiCol_NavCursor] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
@@ -306,6 +307,7 @@ void ImGui::StyleColorsClassic(ImGuiStyle* dst)
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border];
colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);
colors[ImGuiCol_DragDropTargetBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_UnsavedMarker] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);
@@ -373,6 +375,7 @@ void ImGui::StyleColorsLight(ImGuiStyle* dst)
colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
colors[ImGuiCol_TreeLines] = colors[ImGuiCol_Border];
colors[ImGuiCol_DragDropTarget] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
colors[ImGuiCol_DragDropTargetBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
colors[ImGuiCol_UnsavedMarker] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered];
colors[ImGuiCol_NavWindowingHighlight] = ImVec4(0.70f, 0.70f, 0.70f, 0.70f);