1 files changed, 113 insertions, 0 deletions
diff --git a/Src/Wasabi/api/wnd/wndclass/bufferpaintwnd.cpp b/Src/Wasabi/api/wnd/wndclass/bufferpaintwnd.cpp
new file mode 100644
index 00000000..a32d29c5
--- /dev/null
+++ b/Src/Wasabi/api/wnd/wndclass/bufferpaintwnd.cpp
@@ -0,0 +1,113 @@
+#include <precomp.h>
+#include "bufferpaintwnd.h"
+#include <tataki/canvas/bltcanvas.h>
+
+// -----------------------------------------------------------------------
+BufferPaintWnd::BufferPaintWnd() {
+  canvas_w = -1;
+  canvas_h = -1;
+  render_canvas = NULL;
+  invalidated = 1;
+}
+
+// -----------------------------------------------------------------------
+BufferPaintWnd::~BufferPaintWnd() {
+  delete render_canvas;
+}
+
+// -----------------------------------------------------------------------
+int BufferPaintWnd::onInit() {
+  BUFFERPAINTWND_PARENT::onInit();
+  return 1;
+}
+
+// -----------------------------------------------------------------------
+void BufferPaintWnd::bufferPaint() {
+  updateCanvas();
+  if (render_canvas != NULL)
+    onBufferPaint(render_canvas, canvas_w, canvas_h);
+}
+
+void BufferPaintWnd::invalidateBuffer() {
+  invalidated = 1;
+  invalidate();
+}
+
+// -----------------------------------------------------------------------
+void BufferPaintWnd::getBufferPaintSize(int *w, int *h) {
+  RECT r;
+  getClientRect(&r);
+  if (w) *w = r.right-r.left;
+  if (h) *h = r.bottom-r.top;
+}
+
+// -----------------------------------------------------------------------
+void BufferPaintWnd::getBufferPaintSource(RECT *r) {
+  ASSERT(r != NULL);
+  r->left = 0;
+  r->right = canvas_w;
+  r->top = 0;
+  r->bottom = canvas_h;
+}
+
+// -----------------------------------------------------------------------
+void BufferPaintWnd::getBufferPaintDest(RECT *r) {
+  ASSERT(r != NULL);
+  getClientRect(r);
+}
+
+// -----------------------------------------------------------------------
+int BufferPaintWnd::onPaint(Canvas *canvas) {
+
+  BUFFERPAINTWND_PARENT::onPaint(canvas);
+
+  if (invalidated) bufferPaint();
+  invalidated = 0;
+
+  RECT r;
+  getBufferPaintDest(&r);
+  RECT sr;
+  getBufferPaintSource(&sr);
+
+  render_canvas->/*getSkinBitmap()->*/stretchToRectAlpha(canvas, &sr, &r, getPaintingAlpha());
+
+  return 1;
+}
+
+// -----------------------------------------------------------------------
+int BufferPaintWnd::onResize() {
+  if (!BUFFERPAINTWND_PARENT::onResize()) return 0;
+  if (updateCanvas()) {
+    invalidated = 1;
+    invalidate();
+  }
+  return 1;
+}
+
+// -----------------------------------------------------------------------
+int BufferPaintWnd::updateCanvas() {
+  int w, h;
+  getBufferPaintSize(&w, &h);
+
+  if (wantEvenAlignment()) {
+    if (w & 1) w++;
+    if (h & 1) h++;
+  }
+
+  if (w == 0 || h == 0) return 0; 
+
+  int newone = 0;
+
+  if (canvas_w != w || canvas_h != h) {
+		if (render_canvas)
+			render_canvas->DestructiveResize(w, wantNegativeHeight() ? -h : h);
+		else
+	    render_canvas = new BltCanvas(w, wantNegativeHeight() ? -h : h, getOsWindowHandle());
+    canvas_w = w;
+    canvas_h = h;
+    newone = 1;
+    onNewBuffer(canvas_w, canvas_h);
+  }
+
+  return newone;
+}