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Code Activity

MultiSelect: Box-Select: Fixed holes when using with clipper (in 1D list.)

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Clipper accounts for Selectable() layout oddity as BoxSelect is sensitive to it.
Also tweaked scroll triggering region inward.
Rename ImGuiMultiSelectFlags_NoBoxSelectScroll to ImGuiMultiSelectFlags_BoxSelectNoScroll.
Fixed use with ImGuiMultiSelectFlags_SinglaSelect.
This commit is contained in:
ocornut 2023-12-20 11:34:25 +01:00
parent 7546a2d345
commit 1ac469b50f
5 changed files with 60 additions and 25 deletions
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17
imgui_demo.cpp
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@ -3031,6 +3031,7 @@ static void ShowDemoWindowMultiSelect()
ImGui::BulletText("Shift modifier for range selection.");
ImGui::BulletText("CTRL+A to select all.");
ImGui::BulletText("Escape to clear selection.");
ImGui::BulletText("Click and drag to box-select.");
ImGui::Text("Tip: Use 'Demo->Tools->Debug Log->Selection' to see selection requests as they happen.");
// Use default selection.Adapter: Pass index to SetNextItemSelectionUserData(), store index in Selection
@ -3041,7 +3042,7 @@ static void ShowDemoWindowMultiSelect()
// The BeginListBox() has no actual purpose for selection logic (other that offering a scrolling region).
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape;
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
selection.ApplyRequests(ms_io, ITEMS_COUNT);
@ -3076,7 +3077,7 @@ static void ShowDemoWindowMultiSelect()
ImGui::Text("Selection: %d/%d", selection.Size, ITEMS_COUNT);
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape;
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
selection.ApplyRequests(ms_io, ITEMS_COUNT);
@ -3142,7 +3143,7 @@ static void ShowDemoWindowMultiSelect()
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape;
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
selection.ApplyRequests(ms_io, items.Size);
@ -3259,7 +3260,7 @@ static void ShowDemoWindowMultiSelect()
static bool use_drag_drop = true;
static bool show_in_table = false;
static bool show_color_button = false;
static ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_None;
static ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
static WidgetType widget_type = WidgetType_Selectable;
if (ImGui::RadioButton("Selectables", widget_type == WidgetType_Selectable)) { widget_type = WidgetType_Selectable; }
@ -3273,7 +3274,7 @@ static void ShowDemoWindowMultiSelect()
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_SingleSelect", &flags, ImGuiMultiSelectFlags_SingleSelect);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_NoSelectAll", &flags, ImGuiMultiSelectFlags_NoSelectAll);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_BoxSelect", &flags, ImGuiMultiSelectFlags_BoxSelect);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_NoBoxSelectScroll", &flags, ImGuiMultiSelectFlags_NoBoxSelectScroll);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_BoxSelectNoScroll", &flags, ImGuiMultiSelectFlags_BoxSelectNoScroll);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_ClearOnEscape", &flags, ImGuiMultiSelectFlags_ClearOnEscape);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_ClearOnClickVoid", &flags, ImGuiMultiSelectFlags_ClearOnClickVoid);
if (ImGui::CheckboxFlags("ImGuiMultiSelectFlags_ScopeWindow", &flags, ImGuiMultiSelectFlags_ScopeWindow) && (flags & ImGuiMultiSelectFlags_ScopeWindow))
@ -9621,6 +9622,7 @@ struct ExampleAssetsBrowser
// Options
bool ShowTypeOverlay = true;
bool AllowDragUnselected = false;
bool AllowBoxSelect = false; // Unsupported for 2D selection for now.
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.
@ -9724,6 +9726,9 @@ struct ExampleAssetsBrowser
ImGui::SeparatorText("Selection Behavior");
ImGui::Checkbox("Allow dragging unselected item", &AllowDragUnselected);
ImGui::BeginDisabled(); // Unsupported for 2D selection for now.
ImGui::Checkbox("Allow box-selection", &AllowBoxSelect);
ImGui::EndDisabled();
ImGui::SeparatorText("Layout");
ImGui::SliderFloat("Icon Size", &IconSize, 16.0f, 128.0f, "%.0f");
@ -9772,6 +9777,8 @@ struct ExampleAssetsBrowser
ImGuiMultiSelectFlags ms_flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_ClearOnClickVoid;
if (AllowDragUnselected)
ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease; // To allow dragging an unselected item without altering selection.
if (AllowBoxSelect)
ms_flags |= ImGuiMultiSelectFlags_BoxSelect; // FIXME-MULTISELECT: Box-select not yet supported for 2D selection when using clipper.
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(ms_flags);
// Use custom selection adapter: store ID in selection (recommended)