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-rw-r--r--src/menu/background_image.hpp19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/menu/background_image.hpp b/src/menu/background_image.hpp
index 23b1a68e..8b28a2e3 100644
--- a/src/menu/background_image.hpp
+++ b/src/menu/background_image.hpp
@@ -31,6 +31,7 @@
#include "background.hpp"
#include "texture.hpp"
#include "utils/disposer.hpp"
+#include "utils/dimension.hpp"
namespace usdx
{
@@ -46,8 +47,26 @@ namespace usdx
*/
Disposer<Texture>* texture;
+ /**
+ * Vertices to draw the background rectangle filled with the
+ * texture. Cached until size of the parent component changes.
+ *
+ * @see updateVertices()
+ */
GLint vertices[8];
+ /**
+ * Cache for the size of the parent component, to be able to detect
+ * changes.
+ */
+ Dimension<int> size;
+
+ /**
+ * Update the vertices for drawing the background, if the size if the
+ * parent component changes.
+ */
+ void updateVertices();
+
protected:
void draw(void);