Hey - det er flot!
.. Men prøv lige at slå filnavne til, og de på "portræt" billeder :)
Du kan vist godt flytte hele billedet en 4-8 pixels op uden der sker
noget.
Regards, Klaus Post
http://www.klauspost.com
On Wed, Oct 27, 2010 at 23:46, Anders Kvist <[email protected]
<mailto:[email protected]>> wrote:
Author: akv
Date: 2010-10-27 23:46:27 +0200 (Wed, 27 Oct 2010)
New Revision: 3593
Modified:
trunk/src/rs-store.c
Log:
Adding a bit of eyecandy...
Modified: trunk/src/rs-store.c
===================================================================
--- trunk/src/rs-store.c 2010-10-27 21:34:49 UTC (rev 3592)
+++ trunk/src/rs-store.c 2010-10-27 21:46:27 UTC (rev 3593)
@@ -1758,9 +1758,9 @@
void
cairo_draw_thumbnail(cairo_t *cr, GdkPixbuf *pixbuf, gint x, gint
y, gint width, gint height, gdouble alpha)
{
- gdouble greyvalue = 1.0;
+ gdouble greyvalue = 0.9;
- cairo_set_source_rgba(cr, greyvalue, greyvalue, greyvalue,
0.5);
+ cairo_set_source_rgba(cr, greyvalue, greyvalue, greyvalue,
1.0);
cairo_rectangle(cr, x, y, width, height);
cairo_fill(cr);
@@ -2422,60 +2422,183 @@
-1);
}
+/* This function is grabbed from
http://stevehanov.ca/blog/index.php?id=53 */
+void cairo_image_surface_blur( cairo_surface_t* surface, double
radius )
+{
+ // Steve Hanov, 2009
+ // Released into the public domain.
+
+ // get width, height
+ int width = cairo_image_surface_get_width( surface );
+ int height = cairo_image_surface_get_height( surface );
+ unsigned char* dst = (unsigned char*)malloc(width*height*4);
+ unsigned* precalc =
(unsigned*)malloc(width*height*sizeof(unsigned));
+ unsigned char* src = cairo_image_surface_get_data( surface );
+ double mul=1.f/((radius*2)*(radius*2));
+ int channel;
+
+ // The number of times to perform the averaging. According
to wikipedia,
+ // three iterations is good enough to pass for a gaussian.
+ const int MAX_ITERATIONS = 3;
+ int iteration;
+
+ memcpy( dst, src, width*height*4 );
+
+ for ( iteration = 0; iteration < MAX_ITERATIONS;
iteration++ ) {
+ for( channel = 0; channel < 4; channel++ ) {
+ int x,y;
+
+ // precomputation step.
+ unsigned char* pix = src;
+ unsigned* pre = precalc;
+
+ pix += channel;
+ for (y=0;y<height;y++) {
+ for (x=0;x<width;x++) {
+ int tot=pix[0];
+ if (x>0) tot+=pre[-1];
+ if (y>0) tot+=pre[-width];
+ if (x>0 && y>0)
tot-=pre[-width-1];
+ *pre++=tot;
+ pix += 4;
+ }
+ }
+
+ // blur step.
+ pix = dst + (int)radius * width * 4 +
(int)radius * 4 + channel;
+ for (y=radius;y<height-radius;y++) {
+ for (x=radius;x<width-radius;x++) {
+ int l = x < radius ? 0 : x
- radius;
+ int t = y < radius ? 0 : y
- radius;
+ int r = x + radius >=
width ? width - 1 : x + radius;
+ int b = y + radius >=
height ? height - 1 : y + radius;
+ int tot =
precalc[r+b*width] + precalc[l+t*width] -
+ precalc[l+b*width] -
precalc[r+t*width];
+ *pix=(unsigned char)(tot*mul);
+ pix += 4;
+ }
+ pix += (int)radius * 2 * 4;
+ }
+ }
+ memcpy( src, dst, width*height*4 );
+ }
+
+ free( dst );
+ free( precalc );
+}
+
+cairo_surface_t *
+cairo_surface_make_shadow(cairo_surface_t *surface)
+{
+ GdkPixbuf *pixbuf = cairo_convert_to_pixbuf(surface);
+ guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
+ int x, y;
+ for (y = 0; gdk_pixbuf_get_height(pixbuf) > y; y++) {
+ for (x = 0; gdk_pixbuf_get_rowstride(pixbuf) > x;
x+=4) {
+
pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+0] = 50;
+
pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+1] = 50;
+
pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+2] = 50;
+ if
(pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+3] > 0)
+
pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+3] = 255;
+ else
+
pixels[y*gdk_pixbuf_get_rowstride(pixbuf)+x+3] = 0;
+ }
+ }
+
+ cairo_surface_t *surface_new =
cairo_image_surface_create(cairo_image_surface_get_format(surface),
cairo_image_surface_get_width(surface),
cairo_image_surface_get_height(surface));
+ cairo_t *cr = cairo_create(surface_new);
+
+ gdk_cairo_set_source_pixbuf(cr, pixbuf, 0, 0);
+ cairo_paint(cr);
+
+ cairo_destroy(cr);
+
+ return surface_new;
+}
+
GdkPixbuf *
get_thumbnail_eyecandy(GdkPixbuf *thumbnail)
{
cairo_surface_t *surface;
cairo_t *cr;
+ gdouble a2, b2, bb_x1, bb_x2, bb_y1, bb_y2, bb_height,
bb_width;
+ gint height_centering;
+
gint frame_size = 4; /* MAGIC CONSTANT - see
cairo_draw_thumbnail() */
gint width = gdk_pixbuf_get_width(thumbnail)+frame_size;
gint height = gdk_pixbuf_get_height(thumbnail)+frame_size;
- gdouble a2, b2, bb_x1, bb_x2, bb_y1, bb_y2, bb_height,
bb_width, xoffset, yoffset, border = 1;
+ gint calc_width = width+8*3;
+ gint calc_height = 128+8*3;
- gdouble random = g_random_double_range(-0.05, 0.05);
+ gdouble random = 0.0; /* only for use when rotating */
- if (random > 0.0) {
- calc_rotated_coordinats((0-(width/2)), 0, random,
&a2, &b2);
+#ifdef EXPERIMENTAL
+ /* Overwrite random if we want rotation */
+ random = g_random_double_range(-0.05, 0.05);
+#endif
+
+ if (random > 0.0) {
+ calc_rotated_coordinats((0-(calc_width/2)), 0,
random, &a2, &b2);
bb_x1 = a2;
- calc_rotated_coordinats((width/2), 128, random,
&a2, &b2);
+ calc_rotated_coordinats((calc_width/2),
calc_height, random, &a2, &b2);
bb_x2 = a2;
- calc_rotated_coordinats((0-(width/2)), 128,
random, &a2, &b2);
+ calc_rotated_coordinats((0-(calc_width/2)),
calc_height, random, &a2, &b2);
bb_y1 = b2;
- calc_rotated_coordinats((width/2), 0, random, &a2,
&b2);
+ calc_rotated_coordinats((calc_width/2), 0, random,
&a2, &b2);
bb_y2 = b2;
} else {
- calc_rotated_coordinats((0-(width/2)), 128,
random, &a2, &b2);
+ calc_rotated_coordinats((0-(calc_width/2)),
calc_height, random, &a2, &b2);
bb_x1 = a2;
- calc_rotated_coordinats((width/2), 0, random, &a2,
&b2);
+ calc_rotated_coordinats((calc_width/2), 0, random,
&a2, &b2);
bb_x2 = a2;
- calc_rotated_coordinats((width/2), 128, random,
&a2, &b2);
+ calc_rotated_coordinats((calc_width/2),
calc_height, random, &a2, &b2);
bb_y1 = b2;
- calc_rotated_coordinats(0-(width/2), 0, random,
&a2, &b2);
+ calc_rotated_coordinats(0-(calc_width/2), 0,
random, &a2, &b2);
bb_y2 = b2;
}
/* Calculate the magic numbers */
- bb_height = ((bb_y1-bb_y2)+border*2);
- bb_width = ((bb_x1*-1+bb_x2+10)+border*2);
- xoffset = (bb_x2+bb_x1)/2*-1;
- yoffset = (128-(bb_y1-(128)))*-1;
+ bb_height = (bb_y1-bb_y2);
+ bb_width = (bb_x1*-1+bb_x2);
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
bb_width, bb_height);
cr = cairo_create(surface);
cairo_translate(cr, bb_width/2, bb_height/2);
+
+#ifdef EXPERIMENTAL
cairo_rotate(cr, random);
- cairo_draw_thumbnail(cr, thumbnail, width/2*-1,
height/2*-1, width, height, 0.0);
+#endif
+ /* Only adjust height when it's a landscape mode photo */
+ if (width > height)
+ height_centering = ((bb_height-height)/2)-8;
+ else
+ height_centering = 0;
+
+ cairo_draw_thumbnail(cr, thumbnail, bb_width/2*-1+12,
bb_height/2*-1+12+height_centering, width, height, 0.0);
+ surface = cairo_surface_make_shadow(surface);
cairo_destroy(cr);
+ cr = cairo_create(surface);
+
+ cairo_image_surface_blur(surface, 4.0);
+ cairo_translate(cr, bb_width/2, bb_height/2);
+
+#ifdef EXPERIMENTAL
+ cairo_rotate(cr, random);
+#endif
+
+ cairo_draw_thumbnail(cr, thumbnail, bb_width/2*-1+4,
bb_height/2*-1+4+height_centering, width, height, 0.0);
+
+ cairo_destroy(cr);
GdkPixbuf *pixbuf = cairo_convert_to_pixbuf(surface);
return pixbuf;
@@ -2495,7 +2618,7 @@
/* We will use this, if no thumbnail can be loaded */
pixbuf = gtk_widget_render_icon(GTK_WIDGET(job->store),
GTK_STOCK_MISSING_IMAGE,
GTK_ICON_SIZE_DIALOG, NULL);
-#ifdef EXPERIMENTAL
+#if GTK_CHECK_VERSION(2,8,0)
else
pixbuf = get_thumbnail_eyecandy(pixbuf);
#endif
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