added basic canvas and layer management.

1 files changed, 11 insertions, 2 deletions

diff --git a/dat.h b/dat.h
index 5426da9..b913602 100644
--- a/dat.h
+++ b/dat.h
@@ -1,7 +1,16 @@
 typedef struct Layer Layer;
+typedef struct Canvas Canvas;
 
 struct Layer
 {
-	RFrame rf;
-	Image *canvas;
+	RFrame;
+	Image *image;
+	Layer *prev, *next;
+};
+
+struct Canvas
+{
+	RFrame;
+	Image *image;
+	Layer layers;
 };