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MultiSelect: Box-Select: Added ImGuiMultiSelectFlags_BoxSelect2d support. Enabled in Asset Browser. Selectable() supports it.
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@ -3091,6 +3091,10 @@ static bool ImGuiListClipper_StepInternal(ImGuiListClipper* clipper)
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// As a workaround we currently half ItemSpacing worth on each side.
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min_y -= g.Style.ItemSpacing.y;
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max_y += g.Style.ItemSpacing.y;
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// Box-select on 2D area requires different clipping.
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if (ms->BoxSelectUnclipMode)
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data->Ranges.push_back(ImGuiListClipperRange::FromPositions(ms->BoxSelectUnclipRect.Min.y, ms->BoxSelectUnclipRect.Max.y, 0, 0));
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}
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const int off_min = (is_nav_request && g.NavMoveClipDir == ImGuiDir_Up) ? -1 : 0;
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17
imgui.h
17
imgui.h
@ -2774,14 +2774,15 @@ enum ImGuiMultiSelectFlags_
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ImGuiMultiSelectFlags_None = 0,
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ImGuiMultiSelectFlags_SingleSelect = 1 << 0, // Disable selecting more than one item. This is available to allow single-selection code to share same code/logic if desired. It essentially disables the main purpose of BeginMultiSelect() tho!
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ImGuiMultiSelectFlags_NoSelectAll = 1 << 1, // Disable CTRL+A shortcut sending a SelectAll request.
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ImGuiMultiSelectFlags_BoxSelect = 1 << 2, // Enable box-selection. Box-selection + clipper is currently only supported for 1D list (not with 2D grid). Box-selection works better with little bit of spacing between items hit-box in order to be able to aim at empty space.
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ImGuiMultiSelectFlags_BoxSelectNoScroll = 1 << 3, // Disable scrolling when box-selecting near edges of scope.
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ImGuiMultiSelectFlags_ClearOnEscape = 1 << 4, // Clear selection when pressing Escape while scope is focused.
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ImGuiMultiSelectFlags_ClearOnClickVoid = 1 << 5, // Clear selection when clicking on empty location within scope.
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ImGuiMultiSelectFlags_ScopeWindow = 1 << 6, // Scope for _ClearOnClickVoid and _BoxSelect is whole window (Default). Use if BeginMultiSelect() covers a whole window.
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ImGuiMultiSelectFlags_ScopeRect = 1 << 7, // Scope for _ClearOnClickVoid and _BoxSelect is rectangle covering submitted items. Use if multiple BeginMultiSelect() are used in the same host window.
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ImGuiMultiSelectFlags_SelectOnClick = 1 << 8, // Apply selection on mouse down when clicking on unselected item. (Default)
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ImGuiMultiSelectFlags_SelectOnClickRelease = 1 << 9, // Apply selection on mouse release when clicking an unselected item. Allow dragging an unselected item without altering selection.
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ImGuiMultiSelectFlags_BoxSelect = 1 << 2, // Enable box-selection (only supporting 1D list when using clipper, not 2D grids). Box-selection works better with little bit of spacing between items hit-box in order to be able to aim at empty space.
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ImGuiMultiSelectFlags_BoxSelect2d = 1 << 3, // Enable box-selection with 2D layout/grid support. This alters clipping logic so that e.g. horizontal movements will update selection of normally clipped items.
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ImGuiMultiSelectFlags_BoxSelectNoScroll = 1 << 4, // Disable scrolling when box-selecting near edges of scope.
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ImGuiMultiSelectFlags_ClearOnEscape = 1 << 5, // Clear selection when pressing Escape while scope is focused.
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ImGuiMultiSelectFlags_ClearOnClickVoid = 1 << 6, // Clear selection when clicking on empty location within scope.
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ImGuiMultiSelectFlags_ScopeWindow = 1 << 7, // Scope for _ClearOnClickVoid and _BoxSelect is whole window (Default). Use if BeginMultiSelect() covers a whole window.
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ImGuiMultiSelectFlags_ScopeRect = 1 << 8, // Scope for _ClearOnClickVoid and _BoxSelect is rectangle covering submitted items. Use if multiple BeginMultiSelect() are used in the same host window.
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ImGuiMultiSelectFlags_SelectOnClick = 1 << 9, // Apply selection on mouse down when clicking on unselected item. (Default)
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ImGuiMultiSelectFlags_SelectOnClickRelease = 1 << 10, // Apply selection on mouse release when clicking an unselected item. Allow dragging an unselected item without altering selection.
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};
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enum ImGuiSelectionRequestType
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@ -9622,7 +9622,7 @@ struct ExampleAssetsBrowser
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// Options
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bool ShowTypeOverlay = true;
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bool AllowDragUnselected = false;
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bool AllowBoxSelect = false; // Unsupported for 2D selection for now.
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bool AllowBoxSelect = true;
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float IconSize = 32.0f;
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int IconSpacing = 10;
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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.
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@ -9726,9 +9726,7 @@ struct ExampleAssetsBrowser
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ImGui::SeparatorText("Selection Behavior");
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ImGui::Checkbox("Allow dragging unselected item", &AllowDragUnselected);
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ImGui::BeginDisabled(); // Unsupported for 2D selection for now.
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ImGui::Checkbox("Allow box-selection", &AllowBoxSelect);
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ImGui::EndDisabled();
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ImGui::SeparatorText("Layout");
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ImGui::SliderFloat("Icon Size", &IconSize, 16.0f, 128.0f, "%.0f");
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@ -9778,7 +9776,7 @@ struct ExampleAssetsBrowser
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if (AllowDragUnselected)
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ms_flags |= ImGuiMultiSelectFlags_SelectOnClickRelease; // To allow dragging an unselected item without altering selection.
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if (AllowBoxSelect)
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ms_flags |= ImGuiMultiSelectFlags_BoxSelect; // FIXME-MULTISELECT: Box-select not yet supported for 2D selection when using clipper.
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ms_flags |= ImGuiMultiSelectFlags_BoxSelect2d; // Enable box-select in 2D mode.
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ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(ms_flags);
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// Use custom selection adapter: store ID in selection (recommended)
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@ -9798,7 +9796,6 @@ struct ExampleAssetsBrowser
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ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(LayoutSelectableSpacing, LayoutSelectableSpacing));
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// Rendering parameters
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const ImU32 icon_bg_color = IM_COL32(48, 48, 48, 128);
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const ImU32 icon_type_overlay_colors[3] = { 0, IM_COL32(200, 70, 70, 255), IM_COL32(70, 170, 70, 255) };
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const ImVec2 icon_type_overlay_size = ImVec2(4.0f, 4.0f);
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const bool display_label = (LayoutItemSize.x >= ImGui::CalcTextSize("999").x);
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@ -9825,13 +9822,9 @@ struct ExampleAssetsBrowser
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ImVec2 pos = ImVec2(start_pos.x + (item_idx % column_count) * LayoutItemStep.x, start_pos.y + line_idx * LayoutItemStep.y);
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ImGui::SetCursorScreenPos(pos);
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// Draw box
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ImVec2 box_min(pos.x - 1, pos.y - 1);
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ImVec2 box_max(box_min.x + LayoutItemSize.x + 2, box_min.y + LayoutItemSize.y + 2);
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draw_list->AddRect(box_min, box_max, IM_COL32(90, 90, 90, 255));
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ImGui::SetNextItemSelectionUserData(item_idx);
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bool item_is_selected = Selection.Contains((ImGuiID)item_data->ID);
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bool item_is_visible = ImGui::IsRectVisible(LayoutItemSize);
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ImGui::Selectable("", item_is_selected, ImGuiSelectableFlags_None, LayoutItemSize);
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// Update our selection state immediately (without waiting for EndMultiSelect() requests)
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@ -9856,19 +9849,26 @@ struct ExampleAssetsBrowser
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ImGui::EndDragDropSource();
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}
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// A real app would likely display an image/thumbnail here.
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draw_list->AddRectFilled(box_min, box_max, icon_bg_color);
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if (ShowTypeOverlay && item_data->Type != 0)
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// Render icon (a real app would likely display an image/thumbnail here)
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// Because we use ImGuiMultiSelectFlags_BoxSelect2d mode,
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// clipping vertical range may occasionally be larger so we coarse-clip our rendering.
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if (item_is_visible)
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{
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ImU32 type_col = icon_type_overlay_colors[item_data->Type % IM_ARRAYSIZE(icon_type_overlay_colors)];
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draw_list->AddRectFilled(ImVec2(box_max.x - 2 - icon_type_overlay_size.x, box_min.y + 2), ImVec2(box_max.x - 2, box_min.y + 2 + icon_type_overlay_size.y), type_col);
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}
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if (display_label)
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{
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ImU32 label_col = item_is_selected ? IM_COL32(255, 255, 255, 255) : ImGui::GetColorU32(ImGuiCol_TextDisabled);
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char label[32];
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sprintf(label, "%d", item_data->ID);
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draw_list->AddText(ImVec2(box_min.x, box_max.y - ImGui::GetFontSize()), label_col, label);
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ImVec2 box_min(pos.x - 1, pos.y - 1);
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ImVec2 box_max(box_min.x + LayoutItemSize.x + 2, box_min.y + LayoutItemSize.y + 2); // Dubious
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draw_list->AddRectFilled(box_min, box_max, IM_COL32(48, 48, 48, 200)); // Background color
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if (ShowTypeOverlay && item_data->Type != 0)
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{
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ImU32 type_col = icon_type_overlay_colors[item_data->Type % IM_ARRAYSIZE(icon_type_overlay_colors)];
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draw_list->AddRectFilled(ImVec2(box_max.x - 2 - icon_type_overlay_size.x, box_min.y + 2), ImVec2(box_max.x - 2, box_min.y + 2 + icon_type_overlay_size.y), type_col);
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}
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if (display_label)
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{
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ImU32 label_col = item_is_selected ? IM_COL32(255, 255, 255, 255) : ImGui::GetColorU32(ImGuiCol_TextDisabled);
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char label[32];
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sprintf(label, "%d", item_data->ID);
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draw_list->AddText(ImVec2(box_min.x, box_max.y - ImGui::GetFontSize()), label_col, label);
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}
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}
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ImGui::PopID();
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@ -9893,7 +9893,8 @@ struct ExampleAssetsBrowser
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if (want_delete)
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Selection.ApplyDeletionPostLoop(ms_io, Items, item_curr_idx_to_focus);
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// FIXME-MULTISELECT: Find a way to expose this in public API. This currently requires "imgui_internal.h"
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// Keyboard/Gamepad Wrapping
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// FIXME-MULTISELECT: Currently an imgui_internal.h API. Find a design/way to expose this in public API.
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//ImGui::NavMoveRequestTryWrapping(ImGui::GetCurrentWindow(), ImGuiNavMoveFlags_WrapX);
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// Zooming with CTRL+Wheel
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@ -1726,8 +1726,10 @@ struct IMGUI_API ImGuiMultiSelectTempData
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ImGuiID BoxSelectId;
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ImRect BoxSelectRectPrev;
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ImRect BoxSelectRectCurr; // Selection rectangle in absolute coordinates (derived every frame from Storage->BoxSelectStartPosRel + MousePos)
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ImRect BoxSelectUnclipRect;// Rectangle where ItemAdd() clipping may be temporarily disabled. Need support by multi-select supporting widgets.
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ImGuiSelectionUserData BoxSelectLastitem;
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ImGuiKeyChord KeyMods;
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bool BoxSelectUnclipMode;
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bool LoopRequestClear;
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bool LoopRequestSelectAll;
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bool IsEndIO; // Set when switching IO from BeginMultiSelect() to EndMultiSelect() state.
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@ -6775,7 +6775,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
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const bool disabled_item = (flags & ImGuiSelectableFlags_Disabled) != 0;
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const bool is_multi_select = (g.NextItemData.ItemFlags & ImGuiItemFlags_IsMultiSelect) != 0; // Before ItemAdd()
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const bool item_add = ItemAdd(bb, id, NULL, disabled_item ? (ImGuiItemFlags)ImGuiItemFlags_Disabled : ImGuiItemFlags_None);
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const bool is_visible = ItemAdd(bb, id, NULL, disabled_item ? (ImGuiItemFlags)ImGuiItemFlags_Disabled : ImGuiItemFlags_None);
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if (span_all_columns)
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{
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@ -6783,8 +6783,14 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
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window->ClipRect.Max.x = backup_clip_rect_max_x;
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}
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if (!item_add)
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return false;
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if (!is_visible)
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{
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if (!is_multi_select)
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return false;
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// Extra layer of "no logic clip" for box-select support
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if (!g.CurrentMultiSelect->BoxSelectUnclipMode || !g.CurrentMultiSelect->BoxSelectUnclipRect.Overlaps(bb))
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return false;
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}
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const bool disabled_global = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
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if (disabled_item && !disabled_global) // Only testing this as an optimization
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@ -6857,22 +6863,25 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
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g.LastItemData.StatusFlags |= ImGuiItemStatusFlags_ToggledSelection;
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// Render
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if (hovered || selected)
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if (is_visible)
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{
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// FIXME-MULTISELECT: Styling: Color for 'selected' elements? ImGuiCol_HeaderSelected
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ImU32 col;
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if (selected && !hovered)
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col = GetColorU32(ImLerp(GetStyleColorVec4(ImGuiCol_Header), GetStyleColorVec4(ImGuiCol_HeaderHovered), 0.5f));
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else
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col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
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RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
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}
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if (g.NavId == id)
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{
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ImGuiNavHighlightFlags nav_highlight_flags = ImGuiNavHighlightFlags_Compact | ImGuiNavHighlightFlags_NoRounding;
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if (is_multi_select)
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nav_highlight_flags |= ImGuiNavHighlightFlags_AlwaysDraw; // Always show the nav rectangle
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RenderNavHighlight(bb, id, nav_highlight_flags);
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if (hovered || selected)
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{
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// FIXME-MULTISELECT: Styling: Color for 'selected' elements? ImGuiCol_HeaderSelected
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ImU32 col;
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if (selected && !hovered)
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col = GetColorU32(ImLerp(GetStyleColorVec4(ImGuiCol_Header), GetStyleColorVec4(ImGuiCol_HeaderHovered), 0.5f));
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else
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col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
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RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
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}
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if (g.NavId == id)
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{
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ImGuiNavHighlightFlags nav_highlight_flags = ImGuiNavHighlightFlags_Compact | ImGuiNavHighlightFlags_NoRounding;
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if (is_multi_select)
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nav_highlight_flags |= ImGuiNavHighlightFlags_AlwaysDraw; // Always show the nav rectangle
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RenderNavHighlight(bb, id, nav_highlight_flags);
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}
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}
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if (span_all_columns)
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@ -6883,7 +6892,8 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
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PopColumnsBackground();
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}
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RenderTextClipped(text_min, text_max, label, NULL, &label_size, style.SelectableTextAlign, &bb);
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if (is_visible)
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RenderTextClipped(text_min, text_max, label, NULL, &label_size, style.SelectableTextAlign, &bb);
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// Automatically close popups
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if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_NoAutoClosePopups) && (g.LastItemData.InFlags & ImGuiItemFlags_AutoClosePopups))
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@ -7169,7 +7179,9 @@ ImGuiMultiSelectIO* ImGui::BeginMultiSelect(ImGuiMultiSelectFlags flags)
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if ((flags & (ImGuiMultiSelectFlags_ScopeWindow | ImGuiMultiSelectFlags_ScopeRect)) == 0)
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flags |= ImGuiMultiSelectFlags_ScopeWindow;
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if (flags & ImGuiMultiSelectFlags_SingleSelect)
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flags &= ~ImGuiMultiSelectFlags_BoxSelect;
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flags &= ~(ImGuiMultiSelectFlags_BoxSelect | ImGuiMultiSelectFlags_BoxSelect2d);
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if (flags & ImGuiMultiSelectFlags_BoxSelect2d)
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flags |= ImGuiMultiSelectFlags_BoxSelect;
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// FIXME: BeginFocusScope()
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const ImGuiID id = window->IDStack.back();
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@ -7233,6 +7245,7 @@ ImGuiMultiSelectIO* ImGui::BeginMultiSelect(ImGuiMultiSelectFlags flags)
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}
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// Box-select handling: update active state.
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ms->BoxSelectUnclipMode = false;
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if (flags & ImGuiMultiSelectFlags_BoxSelect)
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{
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ms->BoxSelectId = GetID("##BoxSelect");
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@ -7267,6 +7280,18 @@ ImGuiMultiSelectIO* ImGui::BeginMultiSelect(ImGuiMultiSelectFlags flags)
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ms->BoxSelectRectPrev.Max = ImMax(start_pos_abs, prev_end_pos_abs);
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ms->BoxSelectRectCurr.Min = ImMin(start_pos_abs, curr_end_pos_abs);
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ms->BoxSelectRectCurr.Max = ImMax(start_pos_abs, curr_end_pos_abs);
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// Box-select 2D mode detects horizontal changes (vertical ones are already picked by Clipper)
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// Storing an extra rect used by widgets supporting box-select.
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if (flags & ImGuiMultiSelectFlags_BoxSelect2d)
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if (ms->BoxSelectRectPrev.Min.x != ms->BoxSelectRectCurr.Min.x || ms->BoxSelectRectPrev.Max.x != ms->BoxSelectRectCurr.Max.x)
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{
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ms->BoxSelectUnclipRect = ms->BoxSelectRectPrev;
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ms->BoxSelectUnclipRect.Add(ms->BoxSelectRectCurr);
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ms->BoxSelectUnclipMode = true;
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}
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//GetForegroundDrawList()->AddRect(ms->BoxSelectNoClipRect.Min, ms->BoxSelectNoClipRect.Max, IM_COL32(255,0,0,200), 0.0f, 0, 3.0f);
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//GetForegroundDrawList()->AddRect(ms->BoxSelectRectPrev.Min, ms->BoxSelectRectPrev.Max, IM_COL32(255,0,0,200), 0.0f, 0, 3.0f);
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//GetForegroundDrawList()->AddRect(ms->BoxSelectRectCurr.Min, ms->BoxSelectRectCurr.Max, IM_COL32(0,255,0,200), 0.0f, 0, 1.0f);
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}
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