Added files from Cody Russell

diff --git a/gdk-pixbuf/gdk-pixbuf-drawable.h b/gdk-pixbuf/gdk-pixbuf-drawable.h
new file mode 100644 (file)
index 0000000..08f9222
--- /dev/null
+++ b/gdk-pixbuf/gdk-pixbuf-drawable.h
@@ -0,0 +1,12 @@
+#ifndef _GDK_PIXBUF_DRAWABLE_H_
+#define _GDK_PIXBUF_DRAWABLE_H_
+#include <gdk/gdk.h>
+#include <gdk-pixbuf.h>
+
+ArtPixBuf *art_pixbuf_rgb_from_drawable  (GdkWindow *window,
+                                         gint x, gint y,
+                                         gint width, gint height);
+ArtPixBuf *art_pixbuf_rgba_from_drawable (GdkWindow *window,
+                                          gint x, gint y,
+                                          gint width, gint height)
+#endif

diff --git a/gdk/gdkpixbuf-drawable.c b/gdk/gdkpixbuf-drawable.c
new file mode 100644 (file)
index 0000000..472424a
--- /dev/null
+++ b/gdk/gdkpixbuf-drawable.c
@@ -0,0 +1,135 @@
+/*
+ * creates an ArtPixBuf from a Drawable
+ *
+ * Author:
+ *   Cody Russell <bratsche@dfw.net>
+ */
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include <glib.h>
+#include <gmodule.h>
+#include "gdk-pixbuf.h"
+
+/* private function */
+
+static ArtPixBuf *
+art_pixbuf_from_drawable_core (GdkWindow *window,
+                              gint x, gint y,
+                              gint width, gint height,
+                              gint with_alpha)
+{
+       GdkImage *image;
+       ArtPixBuf *pixbuf;
+       GdkColormap *colormap;
+       art_u8 *buff;
+       art_u8 *pixels;
+       gulong pixel;
+       gint rowstride;
+       art_u8 r, g, b;
+       gint xx, yy;
+       gint fatness;
+
+       g_return_val_if_fail (window != NULL, NULL);
+
+       image = gdk_image_get (window, x, y, width, height);
+       colormap = gdk_rgb_get_cmap ();
+
+       fatness = with_alpha ? 4 : 3;
+       rowstride = width * fatness;
+
+       buff = art_alloc (rowstride * height);
+       pixels = buff;
+
+       switch (image->depth)
+       {
+       case 0:
+       case 1:
+       case 2:
+       case 3:
+       case 4:
+       case 5:
+       case 6:
+       case 7:
+       case 8:
+               for (yy = 0; yy < height; yy++)
+               {
+                       for (xx = 0; xx < width; xx++)
+                       {
+                               pixel = gdk_image_get_pixel (image, xx, yy);
+                               pixels[0] = colormap->colors[pixel].red;
+                               pixels[1] = colormap->colors[pixel].green;
+                               pixels[2] = colormap->colors[pixel].blue;
+                               if (with_alpha)
+                                       pixels[3] = 0;
+                               pixels += fatness;
+           
+                       }
+               }
+               break;
+
+       case 16:
+       case 15:
+               for (yy = 0; yy < height; yy++)
+               {
+                       for (xx = 0; xx < width; xx++)
+                       {
+                               pixel = gdk_image_get_pixel (image, xx, yy);
+                               r =  (pixel >> 8) & 0xf8;
+                               g =  (pixel >> 3) & 0xfc;
+                               b =  (pixel << 3) & 0xf8;
+                               pixels[0] = r;
+                               pixels[1] = g;
+                               pixels[2] = b;
+                               if (with_alpha)
+                                       pixels[3] = 0; /* GdkImages don't have alpha =) */
+                               pixels += fatness;
+                       }
+               }
+               break;
+
+       case 24:
+       case 32:
+               for (yy = 0; yy < height; yy++)
+               {
+                       for (xx = 0; xx < width; xx++)
+                       {
+                               pixel = gdk_image_get_pixel (image, xx, yy);
+                               r =  (pixel >> 16) & 0xff;
+                               g =  (pixel >> 8)  & 0xff;
+                               b = pixel & 0xff;
+                               pixels[0] = r;
+                               pixels[1] = g;
+                               pixels[2] = b;
+                               if (with_alpha)
+                                       pixels[3] = 0;  /* GdkImages don't have alpha.. */
+                               pixels += fatness;
+                       }
+               }
+               break;
+
+       default:
+               g_error ("art_pixbuf_from_drawable_core (): Unknown depth.");
+       }
+
+       return with_alpha ? art_pixbuf_new_rgba (buff, width, height, rowstride) :
+               art_pixbuf_new_rgb (buff, width, height, rowstride);
+}
+
+/* Public functions */
+
+ArtPixBuf *
+art_pixbuf_rgb_from_drawable  (GdkWindow *window,
+                             gint x, gint y,
+                             gint width, gint height)
+{
+       return art_pixbuf_from_drawable_core  (window, x, y, width, height, 0);
+}
+          
+ArtPixBuf *
+art_pixbuf_rgba_from_drawable  (GdkWindow *window,
+                              gint x, gint y,
+                              gint width, gint height)
+{
+       return art_pixbuf_from_drawable_core  (window, x, y, width, height, 1);
+}