GdkPixbuf *
eel_stretch_frame_image (GdkPixbuf *frame_image, int left_offset, int top_offset, int right_offset, int bottom_offset,
int dest_width, int dest_height, gboolean fill_flag)
{
GdkPixbuf *result_pixbuf;
guchar *pixels_ptr;
int frame_width, frame_height;
int y, row_stride;
int target_width, target_frame_width;
int target_height, target_frame_height;
frame_width = gdk_pixbuf_get_width (frame_image);
frame_height = gdk_pixbuf_get_height (frame_image );
if (fill_flag) {
result_pixbuf = gdk_pixbuf_scale_simple (frame_image, dest_width, dest_height, GDK_INTERP_NEAREST);
} else {
result_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, dest_width, dest_height);
}
row_stride = gdk_pixbuf_get_rowstride (result_pixbuf);
pixels_ptr = gdk_pixbuf_get_pixels (result_pixbuf);
/* clear the new pixbuf */
if (!fill_flag) {
for (y = 0; y < dest_height; y++) {
memset (pixels_ptr, 255, row_stride);
pixels_ptr += row_stride;
}
}
target_width = dest_width - left_offset - right_offset;
target_frame_width = frame_width - left_offset - right_offset;
target_height = dest_height - top_offset - bottom_offset;
target_frame_height = frame_height - top_offset - bottom_offset;
/* draw the left top corner and top row */
gdk_pixbuf_copy_area (frame_image, 0, 0, left_offset, top_offset, result_pixbuf, 0, 0);
draw_frame_row (frame_image, target_width, target_frame_width, 0, 0, result_pixbuf, left_offset, top_offset);
/* draw the right top corner and left column */
gdk_pixbuf_copy_area (frame_image, frame_width - right_offset, 0, right_offset, top_offset, result_pixbuf, dest_width - right_offset, 0);
draw_frame_column (frame_image, target_height, target_frame_height, 0, 0, result_pixbuf, top_offset, left_offset);
/* draw the bottom right corner and bottom row */
gdk_pixbuf_copy_area (frame_image, frame_width - right_offset, frame_height - bottom_offset, right_offset, bottom_offset, result_pixbuf, dest_width - right_offset, dest_height - bottom_offset);
draw_frame_row (frame_image, target_width, target_frame_width, frame_height - bottom_offset, dest_height - bottom_offset, result_pixbuf, left_offset, bottom_offset);
/* draw the bottom left corner and the right column */
gdk_pixbuf_copy_area (frame_image, 0, frame_height - bottom_offset, left_offset, bottom_offset, result_pixbuf, 0, dest_height - bottom_offset);
draw_frame_column (frame_image, target_height, target_frame_height, frame_width - right_offset, dest_width - right_offset, result_pixbuf, top_offset, right_offset);
return result_pixbuf;
}
static GdkPixbuf *
stretch_frame_image (GdkPixbuf *frame_image,
gint left_offset,
gint top_offset,
gint right_offset,
gint bottom_offset,
gint dest_width,
gint dest_height)
{
GdkPixbuf *pixbuf;
gint frame_width, frame_height;
gint target_width, target_frame_width;
gint target_height, target_frame_height;
frame_width = gdk_pixbuf_get_width (frame_image);
frame_height = gdk_pixbuf_get_height (frame_image );
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
dest_width, dest_height);
gdk_pixbuf_fill (pixbuf, 0);
target_width = dest_width - left_offset - right_offset;
target_height = dest_height - top_offset - bottom_offset;
target_frame_width = frame_width - left_offset - right_offset;
target_frame_height = frame_height - top_offset - bottom_offset;
left_offset += MIN (target_width / 4, target_frame_width / 4);
right_offset += MIN (target_width / 4, target_frame_width / 4);
top_offset += MIN (target_height / 4, target_frame_height / 4);
bottom_offset += MIN (target_height / 4, target_frame_height / 4);
target_width = dest_width - left_offset - right_offset;
target_height = dest_height - top_offset - bottom_offset;
target_frame_width = frame_width - left_offset - right_offset;
target_frame_height = frame_height - top_offset - bottom_offset;
/* draw the left top corner and top row */
gdk_pixbuf_copy_area (frame_image,
0, 0, left_offset, top_offset,
pixbuf, 0, 0);
draw_frame_row (frame_image, target_width, target_frame_width,
0, 0,
pixbuf,
left_offset, top_offset);
/* draw the right top corner and left column */
gdk_pixbuf_copy_area (frame_image,
frame_width - right_offset, 0,
right_offset, top_offset,
pixbuf,
dest_width - right_offset, 0);
draw_frame_column (frame_image, target_height, target_frame_height, 0, 0,
pixbuf, top_offset, left_offset);
/* draw the bottom right corner and bottom row */
gdk_pixbuf_copy_area (frame_image,
frame_width - right_offset, frame_height - bottom_offset,
right_offset, bottom_offset,
pixbuf,
dest_width - right_offset, dest_height - bottom_offset);
draw_frame_row (frame_image, target_width, target_frame_width,
frame_height - bottom_offset, dest_height - bottom_offset,
pixbuf, left_offset, bottom_offset);
/* draw the bottom left corner and the right column */
gdk_pixbuf_copy_area (frame_image,
0, frame_height - bottom_offset,
left_offset, bottom_offset,
pixbuf,
0, dest_height - bottom_offset);
draw_frame_column (frame_image, target_height, target_frame_height,
frame_width - right_offset, dest_width - right_offset,
pixbuf, top_offset, right_offset);
return pixbuf;
}
static GdkPixbuf *
eog_thumbnail_stretch_frame_image (GdkPixbuf *frame_image,
gint left_offset,
gint top_offset,
gint right_offset,
gint bottom_offset,
gint dest_width,
gint dest_height,
gboolean fill_flag)
{
GdkPixbuf *result_pixbuf;
gint frame_width, frame_height;
gint target_width, target_frame_width;
gint target_height, target_frame_height;
frame_width = gdk_pixbuf_get_width (frame_image);
frame_height = gdk_pixbuf_get_height (frame_image);
if (fill_flag) {
result_pixbuf = gdk_pixbuf_scale_simple (frame_image,
dest_width,
dest_height,
GDK_INTERP_NEAREST);
} else {
result_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
8,
dest_width,
dest_height);
/* Clear pixbuf to fully opaque white */
gdk_pixbuf_fill (result_pixbuf, 0xffffffff);
}
target_width = dest_width - left_offset - right_offset;
target_frame_width = frame_width - left_offset - right_offset;
target_height = dest_height - top_offset - bottom_offset;
target_frame_height = frame_height - top_offset - bottom_offset;
/* Draw the left top corner and top row */
gdk_pixbuf_copy_area (frame_image,
0, 0,
left_offset,
top_offset,
result_pixbuf,
0, 0);
draw_frame_row (frame_image,
target_width,
target_frame_width,
0, 0,
result_pixbuf,
left_offset,
top_offset);
/* Draw the right top corner and left column */
gdk_pixbuf_copy_area (frame_image,
frame_width - right_offset,
0,
right_offset,
top_offset,
result_pixbuf,
dest_width - right_offset,
0);
draw_frame_column (frame_image,
target_height,
target_frame_height,
0, 0,
result_pixbuf,
top_offset,
left_offset);
/* Draw the bottom right corner and bottom row */
gdk_pixbuf_copy_area (frame_image,
frame_width - right_offset,
frame_height - bottom_offset,
right_offset,
bottom_offset,
result_pixbuf,
dest_width - right_offset,
dest_height - bottom_offset);
draw_frame_row (frame_image,
target_width,
target_frame_width,
frame_height - bottom_offset,
dest_height - bottom_offset,
result_pixbuf,
left_offset, bottom_offset);
/* Draw the bottom left corner and the right column */
gdk_pixbuf_copy_area (frame_image,
0,
frame_height - bottom_offset,
left_offset,
bottom_offset,
result_pixbuf,
0,
dest_height - bottom_offset);
draw_frame_column (frame_image,
target_height,
target_frame_height,
frame_width - right_offset,
dest_width - right_offset,
result_pixbuf, top_offset,
right_offset);
return result_pixbuf;
}
