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MultiSelect: Fix for TreeNode following merge of 011d4755. Demo: basic test for tree nodes.

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ocornut 2020-03-11 21:57:18 +01:00
parent 9c7183dd04
commit 7abda179af
2 changed files with 49 additions and 17 deletions
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56
imgui_demo.cpp
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@ -2844,18 +2844,29 @@ static void ShowDemoWindowMultiSelect()
"Cauliflower", "Celery", "Celery Root", "Celcuce", "Chayote", "Celtuce", "Chayote", "Chinese Broccoli", "Corn", "Cucumber"
};
int COUNT = 1000;
HelpMarker("Hold CTRL and click to select multiple items. Hold SHIFT to select a range. Keyboard is also supported.");
// Test both Selectable() and TreeNode() widgets
enum WidgetType { WidgetType_Selectable, WidgetType_TreeNode };
static WidgetType widget_type = WidgetType_TreeNode;
if (ImGui::RadioButton("Selectables", widget_type == WidgetType_Selectable)) { widget_type = WidgetType_Selectable; }
ImGui::SameLine();
if (ImGui::RadioButton("Tree nodes", widget_type == WidgetType_TreeNode)) { widget_type = WidgetType_TreeNode; }
ImGui::CheckboxFlags("io.ConfigFlags: NavEnableKeyboard", (unsigned int*)&ImGui::GetIO().ConfigFlags, ImGuiConfigFlags_NavEnableKeyboard);
ImGui::SameLine(); HelpMarker("Hold CTRL and click to select multiple items. Hold SHIFT to select a range. Keyboard is also supported.");
// Open a scrolling region
const int ITEMS_COUNT = 1000;
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
{
ImGuiMultiSelectData* multi_select_data = ImGui::BeginMultiSelect(ImGuiMultiSelectFlags_None, (void*)(intptr_t)selection_ref, selection.GetSelected((int)selection_ref));
if (multi_select_data->RequestClear) { selection.Clear(); }
if (multi_select_data->RequestSelectAll) { selection.SelectAll(COUNT); }
ImVec2 color_button_sz(ImGui::GetFontSize(), ImGui::GetFontSize());
if (widget_type == WidgetType_TreeNode)
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ImGui::GetStyle().ItemSpacing.x, 0.0f));
ImGuiMultiSelectData* multi_select_data = ImGui::BeginMultiSelect(ImGuiMultiSelectFlags_None, (void*)(intptr_t)selection_ref, selection.GetSelected(selection_ref));
if (multi_select_data->RequestClear) { selection.Clear(); }
if (multi_select_data->RequestSelectAll) { selection.SelectAll(ITEMS_COUNT); }
ImGuiListClipper clipper;
clipper.Begin(COUNT);
clipper.Begin(ITEMS_COUNT);
while (clipper.Step())
{
if (clipper.DisplayStart > (int)selection_ref)
@ -2868,23 +2879,42 @@ static void ShowDemoWindowMultiSelect()
bool item_is_selected = selection.GetSelected(n);
// Emit a color button, to test that Shift+LeftArrow landing on an item that is not part
// of the selection scope doesn't erroneously alter our selection.
ImVec4 dummy_col = ImColor((ImU32)ImGui::GetID(label));
ImGui::ColorButton("##", dummy_col, ImGuiColorEditFlags_NoTooltip, color_button_sz);
// of the selection scope doesn't erroneously alter our selection (FIXME-TESTS: Add a test for that!).
ImU32 dummy_col = (ImU32)ImGui::GetID(label);
ImGui::ColorButton("##", ImColor(dummy_col), ImGuiColorEditFlags_NoTooltip, color_button_sz);
ImGui::SameLine();
ImGui::SetNextItemSelectionUserData(n);
if (ImGui::Selectable(label, item_is_selected))
selection.SetSelected(n, !item_is_selected);
if (widget_type == WidgetType_Selectable)
{
if (ImGui::Selectable(label, item_is_selected))
selection.SetSelected(n, !item_is_selected);
}
else if (widget_type == WidgetType_TreeNode)
{
ImGuiTreeNodeFlags tree_node_flags = ImGuiTreeNodeFlags_NoTreePushOnOpen | ImGuiTreeNodeFlags_SpanAvailWidth | ImGuiTreeNodeFlags_OpenOnDoubleClick;
if (item_is_selected)
tree_node_flags |= ImGuiTreeNodeFlags_Selected;
ImGui::TreeNodeEx(label, tree_node_flags);
if (ImGui::IsItemToggledSelection())
selection.SetSelected(n, !item_is_selected);
}
ImGui::PopID();
}
}
// Apply multi-select requests
multi_select_data = ImGui::EndMultiSelect();
selection_ref = (int)(intptr_t)multi_select_data->RangeSrc;
ImGui::EndListBox();
if (multi_select_data->RequestClear) { selection.Clear(); }
if (multi_select_data->RequestSelectAll) { selection.SelectAll(COUNT); }
if (multi_select_data->RequestSelectAll) { selection.SelectAll(ITEMS_COUNT); }
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); }
if (widget_type == WidgetType_TreeNode)
ImGui::PopStyleVar();
ImGui::EndListBox();
}
ImGui::TreePop();
}