1 files changed, 33 insertions, 0 deletions
diff --git a/engine/UI/StackedElement.go b/engine/UI/StackedElement.go
new file mode 100644
index 0000000..1c41a19
--- /dev/null
+++ b/engine/UI/StackedElement.go
@@ -0,0 +1,33 @@
+package ui
+
+import rl "github.com/gen2brain/raylib-go/raylib"
+
+// An element that can use another element as a background
+type StackedElement interface {
+	// Returns an applied style
+	GetStyle() *Style
+
+	// Returns a background element. Should return nil if it is not uupposed to be drawn
+	GetBackgroundElement() UIElement
+}
+
+func drawStackedElementBackground(base StackedElement, targetPosition *rl.Rectangle) {
+	var bgElement = base.GetBackgroundElement()
+	if bgElement == nil {
+		_drawSimpleBackground(base.GetStyle(), targetPosition)
+	} else {
+		_drawElement(bgElement, targetPosition)
+	}
+}
+
+func _drawSimpleBackground(style *Style, trg *rl.Rectangle) {
+	rl.DrawRectangleRounded(*trg,
+		*style.Roundness,
+		0, // Assume the segments param is always 0 - it doesn't really matter without a border
+		*style.BacgroundColor)
+}
+
+// Should not be used outside of the scope of this file
+func _drawElement(elem UIElement, trg *rl.Rectangle) {
+	elem.Draw(trg)
+}