Add ImGui wrappers for creating a toolbar docked to a viewport edge

Based on, but simplified, code for BeginMainMenuBar.

2 files changed, 43 insertions, 0 deletions

diff --git a/ui/imgui_extras.cpp b/ui/imgui_extras.cpp
new file mode 100644
index 0000000..1643f4f
--- /dev/null
+++ b/ui/imgui_extras.cpp
@@ -0,0 +1,33 @@
+#define IMGUI_INTERNAL
+#include "imgui_extras.h"
+
+namespace IltGui {
+	bool
+	BeginToolbar(const char * name, ImGuiDir dir, float axisSize, ImGuiWindowFlags windowFlags)
+	{
+		return BeginToolbar(name, ImGui::GetMainViewport(), dir, axisSize, windowFlags);
+	}
+
+	bool
+	BeginToolbar(
+			const char * name, ImGuiViewport * viewport, ImGuiDir dir, float axisSize, ImGuiWindowFlags windowFlags)
+	{
+		bool isOpen = ImGui::BeginViewportSideBar(name, viewport, dir, axisSize,
+				windowFlags | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoSavedSettings);
+		if (isOpen) {
+			if (dir == ImGuiDir_Up || dir == ImGuiDir_Down) {
+				ImGui::GetCurrentWindow()->DC.LayoutType = ImGuiLayoutType_Horizontal;
+			}
+		}
+		else {
+			ImGui::End();
+		}
+		return isOpen;
+	}
+
+	void
+	EndToolbar()
+	{
+		ImGui::End();
+	}
+}
diff --git a/ui/imgui_extras.h b/ui/imgui_extras.h
new file mode 100644
index 0000000..0babaa3
--- /dev/null
+++ b/ui/imgui_extras.h
@@ -0,0 +1,10 @@
+#include "imgui_wrap.h"
+
+namespace IltGui {
+	// NOLINTBEGIN(readability-identifier-naming)
+	bool BeginToolbar(const char * name, ImGuiViewport * viewport, ImGuiDir dir, float axisSize,
+			ImGuiWindowFlags windowFlags = 0);
+	bool BeginToolbar(const char * name, ImGuiDir dir, float axisSize, ImGuiWindowFlags windowFlags = 0);
+	void EndToolbar();
+	// NOLINTEND(readability-identifier-naming)
+}