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MultiSelect: added ImGuiMultiSelectFlags_SelectOnClickAlways mode. Prevents Drag and Drop of multiple items but allows BoxSelect to always reselect even when clicking inside a selecttion. (#9307, #1861)

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ocornut
2026-03-19 16:38:13 +01:00
parent 0b4967992a
commit 9700846bb3
4 changed files with 30 additions and 12 deletions
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22
imgui_demo.cpp
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@@ -2632,7 +2632,7 @@ struct ExampleDualListBox
}
if (child_visible)
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_None;
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_BoxSelect1d;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags, selection.Size, items.Size);
ApplySelectionRequests(ms_io, side);
@@ -3243,6 +3243,10 @@ static void DemoWindowWidgetsSelectionAndMultiSelect(ImGuiDemoWindowData* demo_d
flags &= ~ImGuiMultiSelectFlags_ScopeWindow;
if (ImGui::CheckboxFlags("ImGuiMultiSelectFlags_SelectOnAuto", &flags, ImGuiMultiSelectFlags_SelectOnAuto))
flags &= ~(ImGuiMultiSelectFlags_SelectOnMask_ ^ ImGuiMultiSelectFlags_SelectOnAuto);
ImGui::SameLine(); HelpMarker("Apply selection on mouse down when clicking on unselected item, on mouse up when clicking on selected item. (Default)");
if (ImGui::CheckboxFlags("ImGuiMultiSelectFlags_SelectOnClickAlways", &flags, ImGuiMultiSelectFlags_SelectOnClickAlways))
flags &= ~(ImGuiMultiSelectFlags_SelectOnMask_ ^ ImGuiMultiSelectFlags_SelectOnClickAlways);
ImGui::SameLine(); HelpMarker("Prevents Drag and Drop from being used on multi-selection, but allows e.g. BoxSelect to always reselect even when clicking inside an existing selection. (Excel style behavior)");
if (ImGui::CheckboxFlags("ImGuiMultiSelectFlags_SelectOnClickRelease", &flags, ImGuiMultiSelectFlags_SelectOnClickRelease))
flags &= ~(ImGuiMultiSelectFlags_SelectOnMask_ ^ ImGuiMultiSelectFlags_SelectOnClickRelease);
ImGui::SameLine(); HelpMarker("Allow dragging an unselected item without altering selection.");
@@ -10716,8 +10720,9 @@ struct ExampleAssetsBrowser
// Options
bool ShowTypeOverlay = true;
bool AllowSorting = true;
bool AllowDragUnselected = false;
bool AllowBoxSelect = true;
bool AllowBoxSelect = true; // Will set ImGuiMultiSelectFlags_BoxSelect2d
bool AllowBoxSelectInsideSelection = false; // Will set ImGuiMultiSelectFlags_SelectOnClickAlways
bool AllowDragUnselected = false; // Will set ImGuiMultiSelectFlags_SelectOnClickRelease
float IconSize = 32.0f;
int IconSpacing = 10;
int IconHitSpacing = 4; // Increase hit-spacing if you want to make it possible to clear or box-select from gaps. Some spacing is required to able to amend with Shift+box-select. Value is small in Explorer.
@@ -10822,8 +10827,11 @@ struct ExampleAssetsBrowser
ImGui::Checkbox("Allow Sorting", &AllowSorting);
ImGui::SeparatorText("Selection Behavior");
ImGui::Checkbox("Allow dragging unselected item", &AllowDragUnselected);
ImGui::Checkbox("Allow box-selection", &AllowBoxSelect);
if (ImGui::Checkbox("Allow box-selection from selected items", &AllowBoxSelectInsideSelection) && AllowBoxSelectInsideSelection)
AllowDragUnselected = false;
if (ImGui::Checkbox("Allow dragging unselected item", &AllowDragUnselected) && AllowDragUnselected)
AllowBoxSelectInsideSelection = false;
ImGui::SeparatorText("Layout");
ImGui::SliderFloat("Icon Size", &IconSize, 16.0f, 128.0f, "%.0f");
@@ -10879,9 +10887,11 @@ struct ExampleAssetsBrowser
if (AllowBoxSelect)
ms_flags |= ImGuiMultiSelectFlags_BoxSelect2d;
// - This feature allows dragging an unselected item without selecting it (rarely used)
// - Selection mode
if (AllowDragUnselected)
ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease;
ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease; // Rarely used: Allows dragging an unselected item without selecting it(rarely used)
else if (AllowBoxSelectInsideSelection)
ms_flags |= ImGuiMultiSelectFlags_SelectOnClickAlways; // Rarely used: Prevents Drag and Drop from being used on multiple-selection, but allows e.g. BoxSelect to always reselect even when clicking inside an existing selection.
// - Enable keyboard wrapping on X axis
// (FIXME-MULTISELECT: We haven't designed/exposed a general nav wrapping api yet, so this flag is provided as a courtesy to avoid doing: