X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=gfx%2Fbitmap.c;h=c9f1b83dce8ae2fb9b1bf722c37d45d3271f9bc2;hb=7410e6e4d72aba287efae3839b52da9c9d7c05ac;hp=e99a254d0f440dca8b28ebacd5e77f4b6c7c971c;hpb=c66da8dee53d20f2bc02267d798530f5fb1bf37f;p=bertos.git

diff --git a/gfx/bitmap.c b/gfx/bitmap.c
index e99a254d..c9f1b83d 100755
--- a/gfx/bitmap.c
+++ b/gfx/bitmap.c
@@ -16,6 +16,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.8  2006/03/27 04:48:56  bernie
+ *#* gfx_blitImage(): New function; gfx_blitRaster(): Fix clipping bug.
+ *#*
  *#* Revision 1.7  2006/03/07 22:18:04  bernie
  *#* Correctly compute text width for prop fonts; Make styles a per-bitmap attribute.
  *#*
@@ -162,9 +165,15 @@ void gfx_blit(Bitmap *dst, const Rect *rect, const Bitmap *src, coord_t srcx, co
 }
 
 
-void gfx_blitRaster(Bitmap *dst, coord_t dxmin, coord_t dymin, const uint8_t *raster, coord_t w, coord_t h, coord_t stride)
+/**
+ * Blit a raster to a Bitmap.
+ *
+ * \see gfx_blit()
+ */
+void gfx_blitRaster(Bitmap *dst, coord_t dxmin, coord_t dymin,
+		const uint8_t *raster, coord_t w, coord_t h, coord_t stride)
 {
-	coord_t dxmax, dymax;
+	coord_t dxmax = dxmin + w, dymax = dymin + h;
 	coord_t sxmin = 0, symin = 0;
 	coord_t dx, dy, sx, sy;
 
@@ -181,8 +190,11 @@ void gfx_blitRaster(Bitmap *dst, coord_t dxmin, coord_t dymin, const uint8_t *ra
 		symin += dst->cr.ymin - dymin;
 		dymin = dst->cr.ymin;
 	}
-	dxmax = MIN(dxmin + w, dst->cr.xmax);
-	dymax = MIN(dymin + h, dst->cr.ymax);
+	dxmax = MIN(dxmax, dst->cr.xmax);
+	dymax = MIN(dymax, dst->cr.ymax);
+
+	//kprintf("dxmin=%d, sxmin=%d, dxmax=%d; ", dxmin, sxmin, dxmax);
+	//kprintf("dymin=%d, symin=%d, dymax=%d\n", dymin, symin, dymax);
 
 	/* TODO: make it not as dog slow as this */
 	for (dx = dxmin, sx = sxmin; dx < dxmax; ++dx, ++sx)
@@ -190,6 +202,19 @@ void gfx_blitRaster(Bitmap *dst, coord_t dxmin, coord_t dymin, const uint8_t *ra
 			BM_DRAWPIXEL(dst, dx, dy, RAST_READPIXEL(raster, sx, sy, stride));
 }
 
+/**
+ * Blit an Image to a Bitmap.
+ *
+ * \see gfx_blit()
+ */
+void gfx_blitImage(Bitmap *dst, coord_t dxmin, coord_t dymin, const Image *image)
+{
+	ASSERT(image);
+
+	gfx_blitRaster(dst, dxmin, dymin,
+			image->raster, image->width, image->height, image->stride);
+}
+
 
 /*!
  * Set the bitmap clipping rectangle to the specified coordinates.