MultiSelect: Demo: Added pointer indirection and indent level.
This is to reduce noise for upcoming commits, ahead of adding a loop here.
This commit is contained in:
ocornut
parent
19086c1c48
commit
b91ae122e1
219
imgui_demo.cpp
219
imgui_demo.cpp
@ -2906,9 +2906,10 @@ static void ShowDemoWindowMultiSelect()
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if (ImGui::TreeNode("Multiple Selection (full, advanced)"))
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{
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// Demonstrate holding/updating multi-selection data and using the BeginMultiSelect/EndMultiSelect API to support range-selection and clipping.
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static ExampleSelection selection;
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static ExampleSelection selections_data[1];
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ExampleSelection* selection = &selections_data[0];
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// Test both Selectable() and TreeNode() widgets
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// Options
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enum WidgetType { WidgetType_Selectable, WidgetType_TreeNode };
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static bool use_table = false;
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static bool use_drag_drop = true;
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@ -2919,103 +2920,124 @@ static void ShowDemoWindowMultiSelect()
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ImGui::Checkbox("Use table", &use_table);
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ImGui::Checkbox("Use drag & drop", &use_drag_drop);
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ImGui::Text("Selection size: %d", selection.GetSelectionSize());
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// Open a scrolling region
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const int ITEMS_COUNT = 1000;
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if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
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// (spare brace to add a loop here later)
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{
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ImVec2 color_button_sz(ImGui::GetFontSize(), ImGui::GetFontSize());
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if (widget_type == WidgetType_TreeNode)
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ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
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ImGui::Text("Selection size: %d", selection->GetSelectionSize());
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ImGuiMultiSelectData* multi_select_data = ImGui::BeginMultiSelect(ImGuiMultiSelectFlags_None, (void*)(intptr_t)selection.RangeRef, selection.GetSelected(selection.RangeRef));
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if (multi_select_data->RequestClear) { selection.Clear(); }
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if (multi_select_data->RequestSelectAll) { selection.SelectAll(ITEMS_COUNT); }
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if (use_table)
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// Open a scrolling region
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const int ITEMS_COUNT = 1000;
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if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
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{
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ImGui::PushStyleVar(ImGuiStyleVar_CellPadding, ImVec2(0.0f, 0.0f));
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ImGui::BeginTable("##Split", 2, ImGuiTableFlags_Resizable | ImGuiTableFlags_NoSavedSettings | ImGuiTableFlags_NoPadOuterX);
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ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.70f);
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ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.30f);
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//ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
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}
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ImVec2 color_button_sz(ImGui::GetFontSize(), ImGui::GetFontSize());
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if (widget_type == WidgetType_TreeNode)
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ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
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ImGuiListClipper clipper;
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clipper.Begin(ITEMS_COUNT);
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while (clipper.Step())
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{
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// IF clipping is used you need to set 'RangeSrcPassedBy = true' if RangeRef was passed over.
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if (clipper.DisplayStart > selection.RangeRef)
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multi_select_data->RangeSrcPassedBy = true;
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ImGuiMultiSelectData* multi_select_data = ImGui::BeginMultiSelect(ImGuiMultiSelectFlags_None, (void*)(intptr_t)selection->RangeRef, selection->GetSelected(selection->RangeRef));
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if (multi_select_data->RequestClear) { selection->Clear(); }
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if (multi_select_data->RequestSelectAll) { selection->SelectAll(ITEMS_COUNT); }
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for (int n = clipper.DisplayStart; n < clipper.DisplayEnd; n++)
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if (use_table)
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{
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if (use_table)
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ImGui::TableNextColumn();
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ImGui::PushID(n);
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const char* category = random_names[n % IM_ARRAYSIZE(random_names)];
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char label[64];
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sprintf(label, "Object %05d (category: %s)", n, category);
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bool item_is_selected = selection.GetSelected(n);
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// Emit a color button, to test that Shift+LeftArrow landing on an item that is not part
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// of the selection scope doesn't erroneously alter our selection (FIXME-TESTS: Add a test for that!).
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ImU32 dummy_col = (ImU32)((unsigned int)n * 0xC250B74B) | IM_COL32_A_MASK;
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ImGui::ColorButton("##", ImColor(dummy_col), ImGuiColorEditFlags_NoTooltip, color_button_sz);
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ImGui::SameLine();
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ImGui::SetNextItemSelectionUserData(n);
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if (widget_type == WidgetType_Selectable)
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{
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ImGui::Selectable(label, item_is_selected);
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if (ImGui::IsItemToggledSelection())
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selection.SetSelected(n, !item_is_selected);
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if (use_drag_drop && ImGui::BeginDragDropSource())
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{
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ImGui::Text("(Dragging %d items)", selection.GetSelectionSize());
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ImGui::EndDragDropSource();
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}
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}
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else if (widget_type == WidgetType_TreeNode)
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{
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ImGuiTreeNodeFlags tree_node_flags = ImGuiTreeNodeFlags_SpanAvailWidth;
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tree_node_flags |= ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick;
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if (item_is_selected)
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tree_node_flags |= ImGuiTreeNodeFlags_Selected;
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bool open = ImGui::TreeNodeEx(label, tree_node_flags);
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if (ImGui::IsItemToggledSelection())
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selection.SetSelected(n, !item_is_selected);
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if (use_drag_drop && ImGui::BeginDragDropSource())
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{
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ImGui::Text("(Dragging %d items)", selection.GetSelectionSize());
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ImGui::EndDragDropSource();
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}
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if (open)
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ImGui::TreePop();
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}
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// Right-click: context menu
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if (ImGui::BeginPopupContextItem())
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{
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ImGui::Text("(Testing Selectable inside an embedded popup)");
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ImGui::Selectable("Close");
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ImGui::EndPopup();
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}
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if (use_table)
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{
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ImGui::TableNextColumn();
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ImGui::SetNextItemWidth(-FLT_MIN);
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ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
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ImGui::InputText("###NoLabel", (char*)(void*)category, strlen(category), ImGuiInputTextFlags_ReadOnly);
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ImGui::PopStyleVar();
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}
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ImGui::PopID();
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ImGui::PushStyleVar(ImGuiStyleVar_CellPadding, ImVec2(0.0f, 0.0f));
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ImGui::BeginTable("##Split", 2, ImGuiTableFlags_Resizable | ImGuiTableFlags_NoSavedSettings | ImGuiTableFlags_NoPadOuterX);
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ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.70f);
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ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthStretch, 0.30f);
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//ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
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}
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ImGuiListClipper clipper;
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clipper.Begin(ITEMS_COUNT);
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while (clipper.Step())
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{
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// IF clipping is used you need to set 'RangeSrcPassedBy = true' if RangeRef was passed over.
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if (clipper.DisplayStart > selection->RangeRef)
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multi_select_data->RangeSrcPassedBy = true;
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for (int n = clipper.DisplayStart; n < clipper.DisplayEnd; n++)
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{
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if (use_table)
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ImGui::TableNextColumn();
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ImGui::PushID(n);
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const char* category = random_names[n % IM_ARRAYSIZE(random_names)];
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char label[64];
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sprintf(label, "Object %05d (category: %s)", n, category);
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bool item_is_selected = selection->GetSelected(n);
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// Emit a color button, to test that Shift+LeftArrow landing on an item that is not part
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// of the selection scope doesn't erroneously alter our selection (FIXME-TESTS: Add a test for that!).
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ImU32 dummy_col = (ImU32)((unsigned int)n * 0xC250B74B) | IM_COL32_A_MASK;
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ImGui::ColorButton("##", ImColor(dummy_col), ImGuiColorEditFlags_NoTooltip, color_button_sz);
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ImGui::SameLine();
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ImGui::SetNextItemSelectionUserData(n);
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if (widget_type == WidgetType_Selectable)
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{
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ImGui::Selectable(label, item_is_selected);
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if (ImGui::IsItemToggledSelection())
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selection->SetSelected(n, !item_is_selected);
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if (use_drag_drop && ImGui::BeginDragDropSource())
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{
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ImGui::Text("(Dragging %d items)", selection->GetSelectionSize());
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ImGui::EndDragDropSource();
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}
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}
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else if (widget_type == WidgetType_TreeNode)
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{
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ImGuiTreeNodeFlags tree_node_flags = ImGuiTreeNodeFlags_SpanAvailWidth;
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tree_node_flags |= ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick;
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if (item_is_selected)
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tree_node_flags |= ImGuiTreeNodeFlags_Selected;
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bool open = ImGui::TreeNodeEx(label, tree_node_flags);
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if (ImGui::IsItemToggledSelection())
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selection->SetSelected(n, !item_is_selected);
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if (use_drag_drop && ImGui::BeginDragDropSource())
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{
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ImGui::Text("(Dragging %d items)", selection->GetSelectionSize());
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ImGui::EndDragDropSource();
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}
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if (open)
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ImGui::TreePop();
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}
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// Right-click: context menu
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if (ImGui::BeginPopupContextItem())
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{
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ImGui::Text("(Testing Selectable inside an embedded popup)");
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ImGui::Selectable("Close");
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ImGui::EndPopup();
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}
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if (use_table)
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{
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ImGui::TableNextColumn();
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ImGui::SetNextItemWidth(-FLT_MIN);
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ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
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ImGui::InputText("###NoLabel", (char*)(void*)category, strlen(category), ImGuiInputTextFlags_ReadOnly);
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ImGui::PopStyleVar();
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}
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ImGui::PopID();
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}
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}
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if (use_table)
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{
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ImGui::EndTable();
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ImGui::PopStyleVar();
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}
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// Apply multi-select requests
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multi_select_data = ImGui::EndMultiSelect();
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selection->RangeRef = (int)(intptr_t)multi_select_data->RangeSrc;
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if (multi_select_data->RequestClear) { selection->Clear(); }
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if (multi_select_data->RequestSelectAll) { selection->SelectAll(ITEMS_COUNT); }
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if (multi_select_data->RequestSetRange) { selection->SetRange((int)(intptr_t)multi_select_data->RangeSrc, (int)(intptr_t)multi_select_data->RangeDst, multi_select_data->RangeValue ? 1 : 0); }
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if (widget_type == WidgetType_TreeNode)
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ImGui::PopStyleVar();
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ImGui::EndListBox();
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}
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if (use_table)
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@ -3023,20 +3045,7 @@ static void ShowDemoWindowMultiSelect()
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ImGui::EndTable();
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ImGui::PopStyleVar();
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}
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// Apply multi-select requests
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multi_select_data = ImGui::EndMultiSelect();
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selection.RangeRef = (int)(intptr_t)multi_select_data->RangeSrc;
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if (multi_select_data->RequestClear) { selection.Clear(); }
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if (multi_select_data->RequestSelectAll) { selection.SelectAll(ITEMS_COUNT); }
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if (multi_select_data->RequestSetRange) { selection.SetRange((int)(intptr_t)multi_select_data->RangeSrc, (int)(intptr_t)multi_select_data->RangeDst, multi_select_data->RangeValue ? 1 : 0); }
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if (widget_type == WidgetType_TreeNode)
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ImGui::PopStyleVar();
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ImGui::EndListBox();
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}
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ImGui::TreePop();
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}
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ImGui::TreePop();
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