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Drag and Drop: Rework drop target highlight. (#4281, #3272)

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Amend 4ddb6b46, 4b94738c7
This commit is contained in:
ocornut
2023-10-05 14:13:27 +02:00
parent 0dd756bceb
commit 085ed7bfbe
3 changed files with 16 additions and 4 deletions
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17
imgui.cpp
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@ -12656,7 +12656,6 @@ bool ImGui::IsDragDropPayloadBeingAccepted()
const ImGuiPayload* ImGui::AcceptDragDropPayload(const char* type, ImGuiDragDropFlags flags)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiPayload& payload = g.DragDropPayload;
IM_ASSERT(g.DragDropActive); // Not called between BeginDragDropTarget() and EndDragDropTarget() ?
IM_ASSERT(payload.DataFrameCount != -1); // Forgot to call EndDragDropTarget() ?
@ -12680,7 +12679,7 @@ const ImGuiPayload* ImGui::AcceptDragDropPayload(const char* type, ImGuiDragDrop
payload.Preview = was_accepted_previously;
flags |= (g.DragDropSourceFlags & ImGuiDragDropFlags_AcceptNoDrawDefaultRect); // Source can also inhibit the preview (useful for external sources that live for 1 frame)
if (!(flags & ImGuiDragDropFlags_AcceptNoDrawDefaultRect) && payload.Preview)
window->DrawList->AddRect(r.Min - ImVec2(3.5f,3.5f), r.Max + ImVec2(3.5f, 3.5f), GetColorU32(ImGuiCol_DragDropTarget), 0.0f, 0, 2.0f);
RenderDragDropTargetRect(r);
g.DragDropAcceptFrameCount = g.FrameCount;
payload.Delivery = was_accepted_previously && !IsMouseDown(g.DragDropMouseButton); // For extern drag sources affecting OS window focus, it's easier to just test !IsMouseDown() instead of IsMouseReleased()
@ -12691,10 +12690,20 @@ const ImGuiPayload* ImGui::AcceptDragDropPayload(const char* type, ImGuiDragDrop
return &payload;
}
// FIXME-DRAGDROP: Settle on a proper default visuals for drop target.
// FIXME-STYLE FIXME-DRAGDROP: Settle on a proper default visuals for drop target.
void ImGui::RenderDragDropTargetRect(const ImRect& bb)
{
GetWindowDrawList()->AddRect(bb.Min - ImVec2(3.5f, 3.5f), bb.Max + ImVec2(3.5f, 3.5f), GetColorU32(ImGuiCol_DragDropTarget), 0.0f, 0, 2.0f);
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImRect bb_display = bb;
bb_display.ClipWith(window->ClipRect); // Clip THEN expand so we have a way to visualize that target is not entirely visible.
bb_display.Expand(3.5f);
bool push_clip_rect = !window->ClipRect.Contains(bb_display);
if (push_clip_rect)
window->DrawList->PushClipRectFullScreen();
window->DrawList->AddRect(bb_display.Min, bb_display.Max, GetColorU32(ImGuiCol_DragDropTarget), 0.0f, 0, 2.0f);
if (push_clip_rect)
window->DrawList->PopClipRect();
}
const ImGuiPayload* ImGui::GetDragDropPayload()