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MultiSelect: Demo: make various child windows resizable, with synched heights for the dual list box demo.

This commit is contained in:
ocornut 2024-03-07 15:52:30 +01:00
parent 2111e3597b
commit a639346fba
1 changed files with 24 additions and 14 deletions
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38
imgui_demo.cpp
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@ -2898,6 +2898,7 @@ struct ExampleDualListBox
int request_move_selected = -1;
int request_move_all = -1;
float child_height_0 = 0.0f;
for (int side = 0; side < 2; side++)
{
// FIXME-MULTISELECT: Dual List Box: Add context menus
@ -2912,7 +2913,20 @@ struct ExampleDualListBox
const float items_height = ImGui::GetTextLineHeightWithSpacing();
ImGui::SetNextWindowContentSize(ImVec2(0.0f, items.Size * items_height));
if (ImGui::BeginChild(ImGui::GetID(side ? "1" : "0"), ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle))
bool child_visible;
if (side == 0)
{
// Left child is resizable
ImGui::SetNextWindowSizeConstraints(ImVec2(0.0f, ImGui::GetFrameHeightWithSpacing() * 4), ImVec2(FLT_MAX, FLT_MAX));
child_visible = ImGui::BeginChild("0", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle | ImGuiChildFlags_ResizeY);
child_height_0 = ImGui::GetWindowSize().y;
}
else
{
// Right child use same height as left one
child_visible = ImGui::BeginChild("1", ImVec2(-FLT_MIN, child_height_0), ImGuiChildFlags_FrameStyle);
}
if (child_visible)
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_None;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
@ -3042,8 +3056,8 @@ static void ShowDemoWindowMultiSelect()
static ImGuiSelectionBasicStorage selection;
ImGui::Text("Selection: %d/%d", selection.Size, ITEMS_COUNT);
// 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)))
// The BeginChild() has no purpose for selection logic, other that offering a scrolling region.
if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle | ImGuiChildFlags_ResizeY))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
@ -3060,9 +3074,8 @@ static void ShowDemoWindowMultiSelect()
ms_io = ImGui::EndMultiSelect();
selection.ApplyRequests(ms_io, ITEMS_COUNT);
ImGui::EndListBox();
}
ImGui::EndChild();
ImGui::TreePop();
}
@ -3078,7 +3091,7 @@ static void ShowDemoWindowMultiSelect()
const int ITEMS_COUNT = 10000;
ImGui::Text("Selection: %d/%d", selection.Size, ITEMS_COUNT);
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle | ImGuiChildFlags_ResizeY))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
@ -3102,9 +3115,8 @@ static void ShowDemoWindowMultiSelect()
ms_io = ImGui::EndMultiSelect();
selection.ApplyRequests(ms_io, ITEMS_COUNT);
ImGui::EndListBox();
}
ImGui::EndChild();
ImGui::TreePop();
}
@ -3143,7 +3155,7 @@ static void ShowDemoWindowMultiSelect()
const float items_height = ImGui::GetTextLineHeightWithSpacing();
ImGui::SetNextWindowContentSize(ImVec2(0.0f, items.Size * items_height));
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle | ImGuiChildFlags_ResizeY))
{
ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_ClearOnEscape | ImGuiMultiSelectFlags_BoxSelect;
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
@ -3172,9 +3184,8 @@ static void ShowDemoWindowMultiSelect()
selection.ApplyRequests(ms_io, items.Size);
if (want_delete)
selection.ApplyDeletionPostLoop(ms_io, items, item_curr_idx_to_focus);
ImGui::EndListBox();
}
ImGui::EndChild();
ImGui::TreePop();
}
@ -3307,7 +3318,7 @@ static void ShowDemoWindowMultiSelect()
const float items_height = (widget_type == WidgetType_TreeNode) ? ImGui::GetTextLineHeight() : ImGui::GetTextLineHeightWithSpacing();
ImGui::SetNextWindowContentSize(ImVec2(0.0f, items.Size * items_height));
if (ImGui::BeginListBox("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20)))
if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_FrameStyle | ImGuiChildFlags_ResizeY))
{
ImVec2 color_button_sz(ImGui::GetFontSize(), ImGui::GetFontSize());
if (widget_type == WidgetType_TreeNode)
@ -3465,9 +3476,8 @@ static void ShowDemoWindowMultiSelect()
if (widget_type == WidgetType_TreeNode)
ImGui::PopStyleVar();
ImGui::EndListBox();
}
ImGui::EndChild();
ImGui::TreePop();
}
ImGui::TreePop();