Drag and Drop, Style: added ImGuiStyleVar_DragDropTargetRounding. (#9056)

+ readded rounding arg to RenderDragDropTargetRectEx().

docs/CHANGELOG.txt

diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 09d33ae..d7bffe7 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -129,6 +129,7 @@
 - Style:
   - Fixed vertical scrollbar top coordinates when using thick borders on windows
     with no title bar and no menu bar. (#9366)
+  - Added ImGuiStyleVar_DragDropTargetRounding. (#9056)
 - Fonts:
   - imgui_freetype: add FreeType headers & compiled version in 'About Dear ImGui' details.
   - Assert when using MergeMode with an explicit size over a target font with an implicit

imgui.cpp

diff --git a/imgui.cpp b/imgui.cpp
index 1829d4f..d315638 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -3659,6 +3659,7 @@
     { 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, TableAngledHeadersTextAlign)},// ImGuiStyleVar_TableAngledHeadersTextAlign
     { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, TreeLinesSize)},              // ImGuiStyleVar_TreeLinesSize
     { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, TreeLinesRounding)},          // ImGuiStyleVar_TreeLinesRounding
+    { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, DragDropTargetRounding)},     // ImGuiStyleVar_DragDropTargetRounding
     { 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, ButtonTextAlign) },           // ImGuiStyleVar_ButtonTextAlign
     { 2, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SelectableTextAlign) },       // ImGuiStyleVar_SelectableTextAlign
     { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SeparatorSize)},              // ImGuiStyleVar_SeparatorSize
@@ -15118,7 +15119,7 @@
     {
         ImRect bb = g.DragDropTargetRect;
         bb.Expand(-3.5f);
-        RenderDragDropTargetRectEx(GetForegroundDrawList(), bb);
+        RenderDragDropTargetRectEx(GetForegroundDrawList(), bb, g.Style.DragDropTargetRounding);
     }
     else if (draw_target_rect)
     {
@@ -15149,16 +15150,16 @@
     bool push_clip_rect = !window->ClipRect.Contains(bb_display);
     if (push_clip_rect)
         window->DrawList->PushClipRectFullScreen();
-    RenderDragDropTargetRectEx(window->DrawList, bb_display);
+    RenderDragDropTargetRectEx(window->DrawList, bb_display, g.Style.DragDropTargetRounding);
     if (push_clip_rect)
         window->DrawList->PopClipRect();
 }
 
-void ImGui::RenderDragDropTargetRectEx(ImDrawList* draw_list, const ImRect& bb)
+void ImGui::RenderDragDropTargetRectEx(ImDrawList* draw_list, const ImRect& bb, float rounding)
 {
     ImGuiContext& g = *GImGui;
-    draw_list->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTargetBg), g.Style.DragDropTargetRounding, 0);
-    draw_list->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTarget), g.Style.DragDropTargetRounding, 0, g.Style.DragDropTargetBorderSize);
+    draw_list->AddRectFilled(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTargetBg), rounding, 0);
+    draw_list->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_DragDropTarget), rounding, 0, g.Style.DragDropTargetBorderSize);
 }
 
 const ImGuiPayload* ImGui::GetDragDropPayload()

imgui.h

diff --git a/imgui.h b/imgui.h
index 41a93de..9699ebf 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1852,6 +1852,7 @@
     ImGuiStyleVar_TableAngledHeadersTextAlign,// ImVec2  TableAngledHeadersTextAlign
     ImGuiStyleVar_TreeLinesSize,            // float     TreeLinesSize
     ImGuiStyleVar_TreeLinesRounding,        // float     TreeLinesRounding
+    ImGuiStyleVar_DragDropTargetRounding,   // float     DragDropTargetRounding
     ImGuiStyleVar_ButtonTextAlign,          // ImVec2    ButtonTextAlign
     ImGuiStyleVar_SelectableTextAlign,      // ImVec2    SelectableTextAlign
     ImGuiStyleVar_SeparatorSize,            // float     SeparatorSize
@@ -2328,7 +2329,7 @@
     ImGuiTreeNodeFlags TreeLinesFlags;      // Default way to draw lines connecting TreeNode hierarchy. ImGuiTreeNodeFlags_DrawLinesNone or ImGuiTreeNodeFlags_DrawLinesFull or ImGuiTreeNodeFlags_DrawLinesToNodes.
     float       TreeLinesSize;              // Thickness of outlines when using ImGuiTreeNodeFlags_DrawLines.
     float       TreeLinesRounding;          // Radius of lines connecting child nodes to the vertical line.
-    float       DragDropTargetRounding;     // Radius of the drag and drop target frame.
+    float       DragDropTargetRounding;     // Radius of the drag and drop target frame. When <0.0f: use FrameRounding.
     float       DragDropTargetBorderSize;   // Thickness of the drag and drop target border.
     float       DragDropTargetPadding;      // Size to expand the drag and drop target from actual target item size.
     float       ColorMarkerSize;            // Size of R/G/B/A color markers for ColorEdit4() and for Drags/Sliders when using ImGuiSliderFlags_ColorMarkers.

imgui_internal.h

diff --git a/imgui_internal.h b/imgui_internal.h
index e1b27f2..b3792ab 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -3494,7 +3494,7 @@
     IMGUI_API void          ClearDragDrop();
     IMGUI_API bool          IsDragDropPayloadBeingAccepted();
     IMGUI_API void          RenderDragDropTargetRectForItem(const ImRect& bb);
-    IMGUI_API void          RenderDragDropTargetRectEx(ImDrawList* draw_list, const ImRect& bb);
+    IMGUI_API void          RenderDragDropTargetRectEx(ImDrawList* draw_list, const ImRect& bb, float rounding);
 
     // Typing-Select API
     // (provide Windows Explorer style "select items by typing partial name" + "cycle through items by typing same letter" feature)