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Tab Bar: Added TabItemButton(), ImGuiTabItemFlags_Leading, ImGuiTabItemFlags_Trailing + demo. (#3291)

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(squashed various commits by 2 authors)
This commit is contained in:
Louis Schnellbach
2020-08-03 18:55:51 +02:00
committed by ocornut
parent 29836412e1
commit 4a57a982be
5 changed files with 264 additions and 50 deletions
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85
imgui_demo.cpp
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@ -2354,6 +2354,91 @@ static void ShowDemoWindowLayout()
ImGui::Separator();
ImGui::TreePop();
}
if (ImGui::TreeNode("TabItem Button"))
{
static int next_id = 0;
static ImVector<int> tabs_list;
if (next_id == 0) // Initialize with a default tab
for (int i = 0; i < 9; i++)
tabs_list.push_back(next_id++);
static ImGuiTabBarFlags tab_bar_flags = ImGuiTabBarFlags_Reorderable | ImGuiTabBarFlags_FittingPolicyResizeDown;
ImGui::CheckboxFlags("ImGuiTabBarFlags_Reorderable", (unsigned int*)&tab_bar_flags, ImGuiTabBarFlags_Reorderable);
ImGui::CheckboxFlags("ImGuiTabBarFlags_TabListPopupButton", (unsigned int*)&tab_bar_flags, ImGuiTabBarFlags_TabListPopupButton);
if (ImGui::CheckboxFlags("ImGuiTabBarFlags_FittingPolicyResizeDown", (unsigned int*)&tab_bar_flags, ImGuiTabBarFlags_FittingPolicyResizeDown))
tab_bar_flags &= ~(ImGuiTabBarFlags_FittingPolicyMask_ ^ ImGuiTabBarFlags_FittingPolicyResizeDown);
if (ImGui::CheckboxFlags("ImGuiTabBarFlags_FittingPolicyScroll", (unsigned int*)&tab_bar_flags, ImGuiTabBarFlags_FittingPolicyScroll))
tab_bar_flags &= ~(ImGuiTabBarFlags_FittingPolicyMask_ ^ ImGuiTabBarFlags_FittingPolicyScroll);
static bool show_leading_button = true;
static bool show_trailing_button = true;
ImGui::Checkbox("Show Leading TabItemButton()", &show_leading_button);
ImGui::Checkbox("Show Trailing TabItemButton()", &show_trailing_button);
static bool enable_position = false;
ImGui::Checkbox("Enable Leading/Trailing TabItem()", &enable_position);
if (ImGui::BeginTabBar("MyTabBar", tab_bar_flags))
{
if (show_leading_button)
{
if (ImGui::TabItemButton("+", ImGuiTabItemFlags_Leading | ImGuiTabItemFlags_NoTooltip))
tabs_list.push_back(next_id++);
if (ImGui::IsItemHovered())
ImGui::SetTooltip("Add a new TabItem() in the tab bar");
// Popup Context also works with TabItemButton
if (ImGui::BeginPopupContextItem())
{
ImGui::Text("I'm a popup!");
if (ImGui::Button("Close"))
ImGui::CloseCurrentPopup();
ImGui::EndPopup();
}
}
bool close_current_tab = false;
if (show_trailing_button)
{
if (ImGui::TabItemButton("X", ImGuiTabItemFlags_Trailing | ImGuiTabItemFlags_NoTooltip))
close_current_tab = true;
if (ImGui::IsItemHovered())
ImGui::SetTooltip("Close the currently selected TabItem()");
}
for (int n = 0; n < tabs_list.Size; )
{
int mod = tabs_list[n] % 3;
ImGuiTabItemFlags flags = mod == 0 ? 0 : mod == 1 ? ImGuiTabItemFlags_Leading : ImGuiTabItemFlags_Trailing;
if (!enable_position)
flags = 0;
char name[16];
snprintf(name, IM_ARRAYSIZE(name), "%04d", tabs_list[n]);
bool open = true;
if (ImGui::BeginTabItem(name, &open, flags))
{
ImGui::Text("This is the %s tab!", name);
ImGui::EndTabItem();
if (close_current_tab)
{
open = false;
ImGui::SetTabItemClosed(name);
}
}
if (!open)
tabs_list.erase(tabs_list.Data + n);
else
++n;
}
ImGui::EndTabBar();
}
ImGui::Separator();
ImGui::TreePop();
}
ImGui::TreePop();
}