Changeset 4573 for trunk/src/user32/dib.cpp

Timestamp:

Nov 9, 2000, 7:15:23 PM (25 years ago)

Author:

sandervl

Message:

Icon api rewrite + small fixes

File:

• trunk/src/user32/dib.cpp (modified) (3 diffs)

trunk/src/user32/dib.cpp

@@ -1 @@
-/* $Id: dib.cpp,v 1.5 2000-02-16 14:34:16 sandervl Exp $ */
+/* $Id: dib.cpp,v 1.6 2000-11-09 18:15:18 sandervl Exp $ */
 
 /*
@@ -20 +20 @@
 #include <stdlib.h>
 #include <misc.h>
+#include "dib.h"
 
 #define DBG_LOCALLOG    DBG_dib
@@ -208 +209 @@
 
 }
+
+/***********************************************************************
+ *           BITMAP_GetWidthBytes
+ *
+ * Return number of bytes taken by a scanline of 16-bit aligned Windows DDB
+ * data.
+ */
+int BITMAP_GetWidthBytes( INT bmWidth, INT bpp )
+{
+    switch(bpp)
+    {
+    case 1:
+        return 2 * ((bmWidth+15) >> 4);
+
+    case 24:
+        bmWidth *= 3; /* fall through */
+    case 8:
+        return bmWidth + (bmWidth & 1);
+
+    case 32:
+        return bmWidth * 4;
+
+    case 16:
+    case 15:
+        return bmWidth * 2;
+
+    case 4:
+        return 2 * ((bmWidth+3) >> 2);
+
+    default:
+        dprintf(("BITMAP_GetWidthBytes: Unknown depth %d, please report.\n", bpp ));
+    }
+    return -1;
+}