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MultiSelect: Added ImGuiMultiSelectFlags_SelectOnClickRelease to allow dragging an unselected item without altering selection + update drag and drop demo.

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ocornut 2023-08-31 15:50:01 +02:00
parent 5628dda5a5
commit 82de6c470b
3 changed files with 46 additions and 26 deletions
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3
imgui_widgets.cpp
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@ -7306,10 +7306,9 @@ void ImGui::MultiSelectItemHeader(ImGuiID id, bool* p_selected, ImGuiButtonFlags
// Alter button behavior flags
// To handle drag and drop of multiple items we need to avoid clearing selection on click.
// Enabling this test makes actions using CTRL+SHIFT delay their effect on MouseUp which is annoying, but it allows drag and drop of multiple items.
// FIXME-MULTISELECT: Consider opt-in for drag and drop behavior in ImGuiMultiSelectFlags?
ImGuiButtonFlags button_flags = *p_button_flags;
button_flags |= ImGuiButtonFlags_NoHoveredOnFocus;
if (!selected || (g.ActiveId == id && g.ActiveIdHasBeenPressedBefore))
if ((!selected || (g.ActiveId == id && g.ActiveIdHasBeenPressedBefore)) && !(ms->Flags & ImGuiMultiSelectFlags_SelectOnClickRelease))
button_flags = (button_flags | ImGuiButtonFlags_PressedOnClick) & ~ImGuiButtonFlags_PressedOnClickRelease;
else
button_flags |= ImGuiButtonFlags_PressedOnClickRelease;