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Internals: Added BeginDragDropTooltip() internal function to convey semantic (drag and drop tooltip doesn't get clipped within display boundaries). Revert part of 3218666fb9
. (#1739, #143).
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3218666fb9
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d4b151076c
3
TODO.txt
3
TODO.txt
@ -163,7 +163,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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- tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
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- tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
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- tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
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- tooltip: allow tooltips with timers? or general timer policy? (instantaneous vs timed)
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- tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed) (#1485)
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- menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
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- menus: menu bars inside modals windows are acting weird.
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@ -215,7 +215,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
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- filters: handle wildcards (with implicit leading/trailing *), regexps
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- filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
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- drag and drop: allow drag target to alter tooltip.
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- drag and drop: add demo. (#143, #479)
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- drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov
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- drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
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25
imgui.cpp
25
imgui.cpp
@ -13230,11 +13230,9 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags)
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if (!(flags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
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{
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SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
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BeginTooltipEx(0, true);
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// Target can request the Source to not display its tooltip (we use a dedicated flag to make this request explicit)
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// We unfortunately can't just modify the source flags and skip the call to BeginTooltip, as caller may be emitting contents.
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BeginDragDropTooltip();
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if (g.DragDropActive && g.DragDropAcceptIdPrev && (g.DragDropAcceptFlags & ImGuiDragDropFlags_AcceptNoPreviewTooltip))
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{
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ImGuiWindow* tooltip_window = g.CurrentWindow;
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@ -13257,13 +13255,32 @@ void ImGui::EndDragDropSource()
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IM_ASSERT(g.DragDropActive);
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if (!(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoPreviewTooltip))
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EndTooltip();
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EndDragDropTooltip();
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// Discard the drag if have not called SetDragDropPayload()
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if (g.DragDropPayload.DataFrameCount == -1)
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ClearDragDrop();
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}
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void ImGui::BeginDragDropTooltip()
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{
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// The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
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// In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
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// Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
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ImGuiContext& g = *GImGui;
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//ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
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ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
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SetNextWindowPos(tooltip_pos);
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SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
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//PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
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BeginTooltipEx(0, true);
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}
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void ImGui::EndDragDropTooltip()
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{
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EndTooltip();
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}
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// Use 'cond' to choose to submit payload on drag start or every frame
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bool ImGui::SetDragDropPayload(const char* type, const void* data, size_t data_size, ImGuiCond cond)
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{
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@ -1111,6 +1111,8 @@ namespace ImGui
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IMGUI_API bool BeginDragDropTargetCustom(const ImRect& bb, ImGuiID id);
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IMGUI_API void ClearDragDrop();
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IMGUI_API bool IsDragDropPayloadBeingAccepted();
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IMGUI_API void BeginDragDropTooltip();
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IMGUI_API void EndDragDropTooltip();
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// FIXME-WIP: New Columns API
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IMGUI_API void BeginColumns(const char* str_id, int count, ImGuiColumnsFlags flags = 0); // setup number of columns. use an identifier to distinguish multiple column sets. close with EndColumns().
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