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Tables: Demo custom per-popup popups, demonstrate TableGetHoveredColumn() and ImGuiPopupFlags_NoOpenOverExistingPopup.

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omar 2020-06-19 15:39:56 +02:00 committed by ocornut
parent 745d8cdb49
commit 353bb68e90
1 changed files with 64 additions and 0 deletions
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64
imgui_demo.cpp
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@ -4006,6 +4006,70 @@ static void ShowDemoWindowTables()
ImGui::TreePop();
}
// Demonstrate creating custom context menus inside columns, while playing it nice with context menus provided by TableHeader()/TableAutoHeaders()
if (open_action != -1)
ImGui::SetNextItemOpen(open_action != 0);
if (ImGui::TreeNode("Context menus"))
{
HelpMarker("By default, TableHeader()/TableAutoHeaders() will open a context-menu on right-click.");
ImGuiTableFlags flags = ImGuiTableFlags_Resizable | ImGuiTableFlags_SizingPolicyFixedX | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Hideable | ImGuiTableFlags_Borders;
const int COLUMNS_COUNT = 3;
if (ImGui::BeginTable("##table1", COLUMNS_COUNT, flags))
{
ImGui::TableSetupColumn("One");
ImGui::TableSetupColumn("Two");
ImGui::TableSetupColumn("Three");
// Context Menu 1: right-click on header (including empty section after the third column!) should open Default Table Popup
ImGui::TableAutoHeaders();
for (int row = 0; row < 4; row++)
{
ImGui::TableNextRow();
for (int column = 0; column < COLUMNS_COUNT; column++)
{
ImGui::TableSetColumnIndex(column);
ImGui::PushID(row * COLUMNS_COUNT + column);
ImGui::Text("Cell %d,%d", column, row);
ImGui::SameLine();
// Context Menu 2: right-click on buttons open Custom Button Popup
ImGui::SmallButton("..");
if (ImGui::BeginPopupContextItem())
{
ImGui::Text("This is the popup for Button() On Cell %d,%d", column, row);
ImGui::Selectable("Close");
ImGui::EndPopup();
}
ImGui::PopID();
}
}
// Context Menu 3: Right-click anywhere in columns opens a custom popup
// We use the ImGuiPopupFlags_NoOpenOverExistingPopup flag to avoid displaying over either the standard TableHeader context-menu or the Button context-menu.
const int hovered_column = ImGui::TableGetHoveredColumn();
for (int column = 0; column < COLUMNS_COUNT + 1; column++)
{
ImGui::PushID(column);
if (hovered_column == column && ImGui::IsMouseReleased(1))
ImGui::OpenPopup("MyPopup", ImGuiPopupFlags_NoOpenOverExistingPopup);
if (ImGui::BeginPopup("MyPopup"))
{
if (column == COLUMNS_COUNT)
ImGui::Text("This is the popup for unused space after the last column.");
else
ImGui::Text("This is the popup for Column '%s'", ImGui::TableGetColumnName(column));
ImGui::Selectable("Close");
ImGui::EndPopup();
}
ImGui::PopID();
}
ImGui::EndTable();
ImGui::Text("TableGetHoveredColumn() returned: %d", hovered_column);
}
ImGui::TreePop();
}
static const char* template_items_names[] =
{
"Banana", "Apple", "Cherry", "Watermelon", "Grapefruit", "Strawberry", "Mango",