1 files changed, 73 insertions, 0 deletions
diff --git a/Src/Wasabi/api/wnd/paintcb.h b/Src/Wasabi/api/wnd/paintcb.h
new file mode 100644
index 00000000..acb6fc6e
--- /dev/null
+++ b/Src/Wasabi/api/wnd/paintcb.h
@@ -0,0 +1,73 @@
+#ifndef _PAINTCB_H
+#define _PAINTCB_H
+
+#include <bfc/depview.h>
+#include <bfc/dispatch.h>
+#include <api/wnd/api_window.h>
+
+class Canvas;
+class api_region;
+
+class PaintCallbackInfo : public Dispatchable {
+  public:
+    Canvas *getCanvas();
+    api_region *getRegion();
+
+  enum {
+    PAINTCBINFO_GETCANVAS = 10,
+    PAINTCBINFO_GETREGION = 20,
+  };
+
+};
+
+inline Canvas *PaintCallbackInfo::getCanvas() {
+  return _call(PAINTCBINFO_GETCANVAS, (Canvas *)NULL);
+}
+
+inline api_region *PaintCallbackInfo::getRegion() {
+  return _call(PAINTCBINFO_GETREGION, (api_region *)NULL);
+}
+
+class PaintCallbackInfoI : public PaintCallbackInfo {
+  public:
+    PaintCallbackInfoI(Canvas *_canvas, api_region *_region) : canvas(_canvas), region(_region)  {}
+    virtual ~PaintCallbackInfoI() {}
+
+    virtual Canvas *getCanvas() { return canvas; }
+    virtual api_region *getRegion() { return region; }
+
+  private:
+
+    Canvas *canvas;
+    api_region *region;
+
+  protected:
+    RECVS_DISPATCH;
+};
+
+class PaintCallback : DependentViewerTPtr<ifc_window> {
+public:
+  PaintCallback() { wnd = NULL; };
+  PaintCallback(ifc_window *w);
+  virtual ~PaintCallback();
+
+  virtual void monitorWindow(ifc_window *w);
+  virtual int viewer_onEvent(ifc_window *item, int event, intptr_t param, void *ptr, size_t ptrlen);
+  virtual int viewer_onItemDeleted(ifc_window *item);
+
+  // override those
+  virtual void onBeforePaint(PaintCallbackInfo *info) { }
+  virtual void onAfterPaint(PaintCallbackInfo *info) { }
+  virtual void onWindowDeleted(ifc_window *w)=0; // warning, pointer invalid
+  virtual void onInvalidation(PaintCallbackInfo *info) { }
+
+  enum {
+    BEFOREPAINT = 10,
+    AFTERPAINT = 20,
+  };
+
+private:
+  ifc_window *wnd;
+};
+
+#endif