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ListBox: renamed ListBoxHeader>BeginListBox, ListBoxFooter>EndListBox. Added demo bits.

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ocornut
2021-02-03 16:30:23 +01:00
parent 6f6d4e0b70
commit 03d74a293d
6 changed files with 96 additions and 37 deletions
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64
imgui_demo.cpp
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@ -584,13 +584,12 @@ static void ShowDemoWindowWidgets()
{
// Using the _simplified_ one-liner Combo() api here
// See "Combo" section for examples of how to use the more complete BeginCombo()/EndCombo() api.
// See "Combo" section for examples of how to use the more flexible BeginCombo()/EndCombo() api.
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIIIIII", "JJJJ", "KKKKKKK" };
static int item_current = 0;
ImGui::Combo("combo", &item_current, items, IM_ARRAYSIZE(items));
ImGui::SameLine(); HelpMarker(
"Refer to the \"Combo\" section below for an explanation of the full BeginCombo/EndCombo API, "
"and demonstration of various flags.\n");
"Using the simplified one-liner Combo API here.\nRefer to the \"Combo\" section below for an explanation of how to use the more flexible and general BeginCombo/EndCombo API.");
}
{
@ -689,14 +688,13 @@ static void ShowDemoWindowWidgets()
}
{
// List box
// Using the _simplified_ one-liner ListBox() api here
// See "List boxes" section for examples of how to use the more flexible BeginListBox()/EndListBox() api.
const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon" };
static int item_current = 1;
ImGui::ListBox("listbox\n(single select)", &item_current, items, IM_ARRAYSIZE(items), 4);
//static int listbox_item_current2 = 2;
//ImGui::SetNextItemWidth(-FLT_MIN);
//ImGui::ListBox("##listbox2", &listbox_item_current2, listbox_items, IM_ARRAYSIZE(listbox_items), 4);
ImGui::ListBox("listbox", &item_current, items, IM_ARRAYSIZE(items), 4);
ImGui::SameLine(); HelpMarker(
"Using the simplified one-liner ListBox API here.\nRefer to the \"List boxes\" section below for an explanation of how to use the more flexible and general BeginListBox/EndListBox API.");
}
ImGui::TreePop();
@ -1009,7 +1007,7 @@ static void ShowDemoWindowWidgets()
// (your selection data could be an index, a pointer to the object, an id for the object, a flag intrusively
// stored in the object itself, etc.)
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
static int item_current_idx = 0; // Here our selection data is an index.
static int item_current_idx = 0; // Here we store our selection data as an index.
const char* combo_label = items[item_current_idx]; // Label to preview before opening the combo (technically it could be anything)
if (ImGui::BeginCombo("combo 1", combo_label, flags))
{
@ -1042,6 +1040,48 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
if (ImGui::TreeNode("List boxes"))
{
// Using the generic BeginListBox() API, you have full control over how to display the combo contents.
// (your selection data could be an index, a pointer to the object, an id for the object, a flag intrusively
// stored in the object itself, etc.)
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
static int item_current_idx = 0; // Here we store our selection data as an index.
if (ImGui::BeginListBox("listbox 1"))
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
const bool is_selected = (item_current_idx == n);
if (ImGui::Selectable(items[n], is_selected))
item_current_idx = n;
// Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
if (is_selected)
ImGui::SetItemDefaultFocus();
}
ImGui::EndListBox();
}
// Custom size: use all width, 5 items tall
ImGui::Text("Full-width:");
if (ImGui::BeginListBox("##listbox 2", ImVec2(-FLT_MIN, 5 * ImGui::GetTextLineHeightWithSpacing())))
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
const bool is_selected = (item_current_idx == n);
if (ImGui::Selectable(items[n], is_selected))
item_current_idx = n;
// Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
if (is_selected)
ImGui::SetItemDefaultFocus();
}
ImGui::EndListBox();
}
ImGui::TreePop();
}
if (ImGui::TreeNode("Selectables"))
{
// Selectable() has 2 overloads:
@ -2557,11 +2597,11 @@ static void ShowDemoWindowLayout()
ImGui::Button("LEVERAGE\nBUZZWORD", size);
ImGui::SameLine();
if (ImGui::ListBoxHeader("List", size))
if (ImGui::BeginListBox("List", size))
{
ImGui::Selectable("Selected", true);
ImGui::Selectable("Not Selected", false);
ImGui::ListBoxFooter();
ImGui::EndListBox();
}
ImGui::TreePop();