Regenerate the thumbnail in the list when we change scaling type now
2004-04-05 Rodney Dawes <dobey@ximian.com> * gnome-wp-capplet.c (gnome_wp_scale_type_changed): Regenerate the thumbnail in the list when we change scaling type now (wallpaper_properties_init): Add GtkFileFilter support (needs love) TreeView is buggy, so we need to not set the vertical-separator style property for it * gnome-wp-item.c: Include <config.h> and <gnome.h> here (collect_save_options): Add a function to set all of the pixbuf options for the thumbnail pixbuf properly, so we can save them back out (gnome_wp_item_get_thumbnail): Fix up the code to generate the thumbnails for the list a bit, so that we have sexy thumbnails that look exactly like how the image would, on-screen Initialize all of the width/height variables to 0 Add a new pixbuf variable for loading the original image to get the dimensions of it, so we can do thumbnailing more properly Use a LIST_IMAGE_WIDTH define, for the width of the images in the list Just return the bgpixbuf if we are creating the "No Wallpaper" thumb Save the thumbnail back out with the dimensions for the original image If our image is smaller than the list thumbnail, then just use 1.0 as the ratio for scaling the image for tiling/etc... Use the new API to do scaling inside the center/tile functions Reload the thumbnail pixbuf after generating it with the thumbnail system, so that we get all of the pixbuf options set correctly * gnome-wp-item.h (GnomeWPItem): store the original image's width and height in the item, so we can avoid reopening the original image every time we generate the thumbnail, on systems where the thumbnail doesn't contain the appropriate information * gnome-wp-utils.c (gnome_wp_pixbuf_tile): (gnome_wp_pixbuf_center): Add API to do the scaling inside these calls Fixes #136691
This commit is contained in:
Rodney Dawes
Rodney Dawes
parent
b30e5bc57f
commit
00006d7745
6 changed files with 226 additions and 65 deletions
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@ -1,3 +1,36 @@
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2004-04-05 Rodney Dawes <dobey@ximian.com>
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* gnome-wp-capplet.c (gnome_wp_scale_type_changed): Regenerate the
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thumbnail in the list when we change scaling type now
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(wallpaper_properties_init): Add GtkFileFilter support (needs love)
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TreeView is buggy, so we need to not set the vertical-separator
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style property for it
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* gnome-wp-item.c: Include <config.h> and <gnome.h> here
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(collect_save_options): Add a function to set all of the pixbuf options
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for the thumbnail pixbuf properly, so we can save them back out
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(gnome_wp_item_get_thumbnail): Fix up the code to
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generate the thumbnails for the list a bit, so that we have sexy
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thumbnails that look exactly like how the image would, on-screen
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Initialize all of the width/height variables to 0
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Add a new pixbuf variable for loading the original image to get the
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dimensions of it, so we can do thumbnailing more properly
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Use a LIST_IMAGE_WIDTH define, for the width of the images in the list
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Just return the bgpixbuf if we are creating the "No Wallpaper" thumb
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Save the thumbnail back out with the dimensions for the original image
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If our image is smaller than the list thumbnail, then just use 1.0 as
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the ratio for scaling the image for tiling/etc...
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Use the new API to do scaling inside the center/tile functions
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Reload the thumbnail pixbuf after generating it with the thumbnail
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system, so that we get all of the pixbuf options set correctly
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* gnome-wp-item.h (GnomeWPItem): store the original image's width
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and height in the item, so we can avoid reopening the original image
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every time we generate the thumbnail, on systems where the thumbnail
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doesn't contain the appropriate information
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* gnome-wp-utils.c (gnome_wp_pixbuf_tile):
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(gnome_wp_pixbuf_center): Add API to do the scaling inside these calls
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Fixes #136691
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2004-04-01 Jody Goldberg <jody@gnome.org>
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* Release 2.6.0.3
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@ -332,6 +332,7 @@ static void wp_props_load_wallpaper (gchar * key,
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gtk_list_store_append (GTK_LIST_STORE (capplet->model), &iter);
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pixbuf = gnome_wp_item_get_thumbnail (item, capplet->thumbs);
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gnome_wp_item_update_description (item);
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if (pixbuf != NULL) {
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gtk_list_store_set (GTK_LIST_STORE (capplet->model), &iter,
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@ -525,6 +526,7 @@ static void wallpaper_properties_clicked (GtkWidget * dialog,
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static void gnome_wp_scale_type_changed (GtkMenuShell * shell,
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GnomeWPCapplet * capplet) {
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GnomeWPItem * item = NULL;
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GdkPixbuf * pixbuf;
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GtkTreeIter iter;
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GtkTreeModel * model;
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GtkTreeSelection * selection;
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@ -558,6 +560,11 @@ static void gnome_wp_scale_type_changed (GtkMenuShell * shell,
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default:
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break;
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}
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pixbuf = gnome_wp_item_get_thumbnail (item, capplet->thumbs);
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gtk_list_store_set (GTK_LIST_STORE (capplet->model), &iter,
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0, pixbuf,
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-1);
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g_object_unref (pixbuf);
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gconf_client_set_string (capplet->client, WP_OPTIONS_KEY,
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item->options, NULL);
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}
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@ -1145,7 +1152,6 @@ static void wallpaper_properties_init (void) {
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gtk_rc_parse_string ("style \"wp-tree-defaults\" {\n"
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" GtkTreeView::horizontal-separator = 6\n"
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" GtkTreeView::vertical-separator = 6\n"
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"} widget_class \"*TreeView*\""
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" style \"wp-tree-defaults\"\n\n"
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"style \"wp-dialog-defaults\" {\n"
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@ -18,11 +18,15 @@
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*
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*/
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#include "gnome-wp-item.h"
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#include "gnome-wp-utils.h"
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#include <config.h>
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#include <gnome.h>
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#include <string.h>
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#include <libgnomevfs/gnome-vfs-mime-handlers.h>
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#include "gnome-wp-item.h"
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#include "gnome-wp-utils.h"
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void gnome_wp_item_free (GnomeWPItem * item) {
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if (item == NULL) {
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return;
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@ -49,38 +53,92 @@ void gnome_wp_item_free (GnomeWPItem * item) {
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item = NULL;
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}
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static void collect_save_options (GdkPixbuf * pixbuf,
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gchar *** keys,
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gchar *** vals,
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gint width,
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gint height) {
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gchar ** options;
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gint n, count;
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count = 0;
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options = g_object_get_qdata (G_OBJECT (pixbuf),
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g_quark_from_static_string ("gdk_pixbuf_options"));
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if (options) {
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for (n = 0; options[2 * n]; n++) {
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++count;
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*keys = g_realloc (*keys, sizeof (gchar *) * (count + 1));
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*vals = g_realloc (*vals, sizeof (gchar *) * (count + 1));
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(*keys)[count - 1] = g_strdup (options[2 * n]);
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(*vals)[count - 1] = g_strdup (options[2 * n + 1]);
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(*keys)[count] = NULL;
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(*vals)[count] = NULL;
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}
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}
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++count;
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*keys = g_realloc (*keys, sizeof (gchar *) * (count + 1));
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*vals = g_realloc (*vals, sizeof (gchar *) * (count + 1));
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(*keys)[count - 1] = g_strdup ("tEXt::Thumb::Image::Width");
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(*vals)[count - 1] = g_strdup_printf ("%d", width);
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(*keys)[count] = NULL;
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(*vals)[count] = NULL;
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++count;
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*keys = g_realloc (*keys, sizeof (gchar *) * (count + 1));
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*vals = g_realloc (*vals, sizeof (gchar *) * (count + 1));
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(*keys)[count - 1] = g_strdup ("tEXt::Thumb::Image::Height");
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(*vals)[count - 1] = g_strdup_printf ("%d", height);
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(*keys)[count] = NULL;
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(*vals)[count] = NULL;
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}
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#define LIST_IMAGE_WIDTH 64
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GdkPixbuf * gnome_wp_item_get_thumbnail (GnomeWPItem * item,
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GnomeThumbnailFactory * thumbs) {
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GdkPixbuf * pixbuf, * bgpixbuf;
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GdkPixbuf * tmpbuf;
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GdkPixbuf * scaled = NULL;
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gint w, h, ratio;
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gint bw, bh;
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gint sw, sh, bw, bh, pw, ph, tw, th;
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gdouble ratio;
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sw = sh = bw = bh = pw = ph = tw = th = 0;
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/*
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Get the size of the screen and calculate our aspect ratio divisor
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We do this, so that images are thumbnailed as they would look on
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the screen in reality
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*/
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w = gdk_screen_get_width (gdk_screen_get_default ());
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h = gdk_screen_get_height (gdk_screen_get_default ());
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ratio = h / 48;
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bw = w / ratio;
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bh = h / ratio;
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sw = gdk_screen_get_width (gdk_screen_get_default ());
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sh = gdk_screen_get_height (gdk_screen_get_default ());
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ratio = (gdouble) sw / (gdouble) LIST_IMAGE_WIDTH;
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bw = sw / ratio;
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bh = sh / ratio;
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/*
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Create the pixbuf for the background colors, which will show up for
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oddly sized images, smaller images that are centered, or alpha images
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*/
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if (!strcmp (item->shade_type, "solid")) {
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bgpixbuf = gnome_wp_pixbuf_new_solid (item->pcolor, w / ratio, h / ratio);
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bgpixbuf = gnome_wp_pixbuf_new_solid (item->pcolor, bw, bh);
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} else if (!strcmp (item->shade_type, "vertical-gradient")) {
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bgpixbuf = gnome_wp_pixbuf_new_gradient (GTK_ORIENTATION_VERTICAL,
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item->pcolor, item->scolor,
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w / ratio, h / ratio);
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bw, bh);
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} else {
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bgpixbuf = gnome_wp_pixbuf_new_gradient (GTK_ORIENTATION_HORIZONTAL,
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item->pcolor, item->scolor,
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w / ratio, h / ratio);
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bw, bh);
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}
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/*
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@ -93,7 +151,7 @@ GdkPixbuf * gnome_wp_item_get_thumbnail (GnomeWPItem * item,
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g_file_test (item->fileinfo->thumburi, G_FILE_TEST_EXISTS)) {
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pixbuf = gdk_pixbuf_new_from_file (item->fileinfo->thumburi, NULL);
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} else if (!strcmp (item->filename, "(none)")) {
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pixbuf = gdk_pixbuf_copy (bgpixbuf);
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return bgpixbuf;
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} else {
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pixbuf = gnome_thumbnail_factory_generate_thumbnail (thumbs,
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gnome_vfs_escape_path_string (item->filename),
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@ -101,50 +159,65 @@ GdkPixbuf * gnome_wp_item_get_thumbnail (GnomeWPItem * item,
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gnome_thumbnail_factory_save_thumbnail (thumbs, pixbuf,
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gnome_vfs_escape_path_string (item->filename),
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item->fileinfo->mtime);
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g_object_unref (pixbuf);
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pixbuf = gdk_pixbuf_new_from_file (item->fileinfo->thumburi, NULL);
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}
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if (pixbuf != NULL) {
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w = gdk_pixbuf_get_width (pixbuf);
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h = gdk_pixbuf_get_height (pixbuf);
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const gchar * w_val, * h_val;
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/*
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Handle images large and small. We default to 1, since images smaller
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than 64x48 don't need to be scaled down, and the tiled thumbnails
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will look correct for really small pattern images
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*/
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if (h >= 48)
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ratio = h / 48;
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else if (w >= 64)
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ratio = w / 64;
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else
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ratio = 1;
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w_val = gdk_pixbuf_get_option (pixbuf, "tEXt::Thumb::Image::Width");
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h_val = gdk_pixbuf_get_option (pixbuf, "tEXt::Thumb::Image::Height");
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if (item->width <= 0 || item->height <= 0) {
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if (w_val && h_val) {
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item->width = atoi (w_val);
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item->height = atoi (h_val);
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} else {
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gchar ** keys = NULL;
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gchar ** vals = NULL;
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scaled = gnome_thumbnail_scale_down_pixbuf (pixbuf, w / ratio, h / ratio);
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tmpbuf = gdk_pixbuf_new_from_file (item->filename, NULL);
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item->width = gdk_pixbuf_get_width (tmpbuf);
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item->height = gdk_pixbuf_get_height (tmpbuf);
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collect_save_options (pixbuf, &keys, &vals, item->width, item->height);
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gdk_pixbuf_savev (pixbuf, item->fileinfo->thumburi, "png",
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keys, vals, NULL);
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g_object_unref (tmpbuf);
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g_strfreev (keys);
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g_strfreev (vals);
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}
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}
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pw = gdk_pixbuf_get_width (pixbuf);
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ph = gdk_pixbuf_get_height (pixbuf);
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if (item->width <= bw && item->height <= bh)
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ratio = 1.0;
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tw = item->width / ratio;
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th = item->height / ratio;
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if (!strcmp (item->options, "wallpaper")) {
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w = gdk_pixbuf_get_width (scaled);
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h = gdk_pixbuf_get_height (scaled);
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scaled = gnome_wp_pixbuf_tile (scaled, bgpixbuf);
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scaled = gnome_wp_pixbuf_tile (pixbuf, bgpixbuf, tw, th);
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} else if (!strcmp (item->options, "centered")) {
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w = gdk_pixbuf_get_width (scaled);
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h = gdk_pixbuf_get_height (scaled);
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/*
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This is for alpha centered images like gnome-logo-transparent.jpg
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It's an ugly hack, that can potentially be removed when round() or
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something like it decides to work
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We scale it down again so that it looks proper, instead of the off-
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center look that seems to appear without this hack
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*/
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if (gdk_pixbuf_get_has_alpha (pixbuf) && (w > bw || h > bh))
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scaled = gnome_thumbnail_scale_down_pixbuf (scaled, w / 2, h / 2);
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scaled = gnome_wp_pixbuf_center (scaled, bgpixbuf);
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scaled = gnome_wp_pixbuf_center (pixbuf, bgpixbuf, tw, th);
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} else if (!strcmp (item->options, "stretched")) {
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scaled = gnome_wp_pixbuf_center (pixbuf, bgpixbuf, bw, bh);
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} else if (!strcmp (item->options, "scaled")) {
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if ((gdouble) ph * (gdouble) bw > (gdouble) pw * (gdouble) bh) {
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tw = 0.5 + (gdouble) pw * (gdouble) bh / (gdouble) ph;
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th = bh;
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} else {
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th = 0.5 + (gdouble) ph * (gdouble) bw / (gdouble) pw;
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tw = bw;
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}
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scaled = gnome_wp_pixbuf_center (pixbuf, bgpixbuf, tw, th);
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}
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} else {
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scaled = gdk_pixbuf_copy (bgpixbuf);
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}
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g_object_unref (pixbuf);
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g_object_unref (bgpixbuf);
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@ -155,7 +228,8 @@ void gnome_wp_item_update_description (GnomeWPItem * item) {
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if (!strcmp (item->filename, "(none)")) {
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item->description = g_strdup_printf ("<b>%s</b>", item->name);
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} else {
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item->description = g_strdup_printf ("<b>%s</b>\n%s (%LuK)",
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item->description = g_strdup_printf ("<b>%s</b>\n"
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"%s (%LuK)",
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item->name,
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gnome_vfs_mime_get_description (item->fileinfo->mime_type),
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item->fileinfo->size / 1024);
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@ -52,6 +52,10 @@ struct _GnomeWPItem {
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/* Did the user remove us? */
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gboolean deleted;
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/* Width and Height of the original image */
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gint width;
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gint height;
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};
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void gnome_wp_item_free (GnomeWPItem * item);
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@ -105,7 +105,10 @@ GdkPixbuf * gnome_wp_pixbuf_new_solid (GdkColor * color,
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}
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GdkPixbuf * gnome_wp_pixbuf_tile (GdkPixbuf * src_pixbuf,
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GdkPixbuf * dest_pixbuf) {
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GdkPixbuf * dest_pixbuf,
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gint scaled_width,
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gint scaled_height) {
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GdkPixbuf * tmpbuf;
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gdouble cx, cy;
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gint dwidth, dheight;
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gint swidth, sheight;
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@ -115,47 +118,81 @@ GdkPixbuf * gnome_wp_pixbuf_tile (GdkPixbuf * src_pixbuf,
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return gdk_pixbuf_copy (src_pixbuf);
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}
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swidth = gdk_pixbuf_get_width (src_pixbuf);
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sheight = gdk_pixbuf_get_height (src_pixbuf);
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tmpbuf = gdk_pixbuf_scale_simple (src_pixbuf, scaled_width, scaled_height,
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GDK_INTERP_BILINEAR);
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swidth = gdk_pixbuf_get_width (tmpbuf);
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sheight = gdk_pixbuf_get_height (tmpbuf);
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dwidth = gdk_pixbuf_get_width (dest_pixbuf);
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dheight = gdk_pixbuf_get_height (dest_pixbuf);
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for (cy = 0; cy < dheight; cy += sheight) {
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for (cx = 0; cx < dwidth; cx += swidth) {
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gdk_pixbuf_composite (src_pixbuf, dest_pixbuf, cx, cy,
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gdk_pixbuf_composite (tmpbuf, dest_pixbuf, cx, cy,
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MIN (swidth, dwidth - cx),
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MIN (sheight, dheight - cy),
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cx, cy, 1.0, 1.0, GDK_INTERP_BILINEAR, alpha);
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cx, cy, 1.0, 1.0,
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GDK_INTERP_BILINEAR, alpha);
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}
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}
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g_object_unref (tmpbuf);
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return gdk_pixbuf_copy (dest_pixbuf);
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}
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GdkPixbuf * gnome_wp_pixbuf_center (GdkPixbuf * src_pixbuf,
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GdkPixbuf * dest_pixbuf) {
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gdouble cx, cy;
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GdkPixbuf * dest_pixbuf,
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gint scaled_width,
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gint scaled_height) {
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GdkPixbuf * tmpbuf;
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gint ox, oy, cx, cy;
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gint dwidth, dheight;
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gint swidth, sheight;
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gint cwidth, cheight;
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guint alpha = 255;
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if (dest_pixbuf == NULL) {
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return gdk_pixbuf_copy (src_pixbuf);
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}
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swidth = gdk_pixbuf_get_width (src_pixbuf);
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sheight = gdk_pixbuf_get_height (src_pixbuf);
|
||||
ox = cx = oy = cy = 0;
|
||||
|
||||
tmpbuf = gdk_pixbuf_scale_simple (src_pixbuf, scaled_width, scaled_height,
|
||||
GDK_INTERP_BILINEAR);
|
||||
|
||||
swidth = gdk_pixbuf_get_width (tmpbuf);
|
||||
sheight = gdk_pixbuf_get_height (tmpbuf);
|
||||
|
||||
dwidth = gdk_pixbuf_get_width (dest_pixbuf);
|
||||
dheight = gdk_pixbuf_get_height (dest_pixbuf);
|
||||
|
||||
cx = (dwidth - swidth) / 2;
|
||||
cy = (dheight - sheight) / 2;
|
||||
if (dwidth > swidth) {
|
||||
ox = (dwidth - swidth) / 2;
|
||||
cx = 0;
|
||||
cwidth = swidth;
|
||||
} else {
|
||||
cx = (swidth - dwidth) / 2;
|
||||
oy = 0;
|
||||
cwidth = dwidth;
|
||||
}
|
||||
|
||||
gdk_pixbuf_composite (src_pixbuf, dest_pixbuf, cx, cy,
|
||||
swidth, sheight,
|
||||
cx, cy, 1.0, 1.0, GDK_INTERP_BILINEAR, alpha);
|
||||
if (dheight > sheight) {
|
||||
oy = ((dheight - sheight) / 2);
|
||||
cy = 0;
|
||||
cheight = sheight;
|
||||
} else {
|
||||
cy = (sheight - dheight) / 2;
|
||||
oy = 0;
|
||||
cheight = dheight;
|
||||
}
|
||||
|
||||
gdk_pixbuf_composite (tmpbuf, dest_pixbuf, ox, oy,
|
||||
cwidth, cheight,
|
||||
ox - cx, oy - cy, 1.0, 1.0,
|
||||
GDK_INTERP_BILINEAR, alpha);
|
||||
|
||||
g_object_unref (tmpbuf);
|
||||
return gdk_pixbuf_copy (dest_pixbuf);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -30,12 +30,19 @@ GdkPixbuf * gnome_wp_pixbuf_new_gradient (GtkOrientation orientation,
|
|||
GdkColor * c1,
|
||||
GdkColor * c2,
|
||||
gint width, gint height);
|
||||
|
||||
GdkPixbuf * gnome_wp_pixbuf_new_solid (GdkColor * color,
|
||||
gint width, gint height);
|
||||
|
||||
GdkPixbuf * gnome_wp_pixbuf_tile (GdkPixbuf * src_pixbuf,
|
||||
GdkPixbuf * dest_pixbuf);
|
||||
GdkPixbuf * dest_pixbuf,
|
||||
gint scaled_width,
|
||||
gint scaled_height);
|
||||
|
||||
GdkPixbuf * gnome_wp_pixbuf_center (GdkPixbuf * src_pixbuf,
|
||||
GdkPixbuf * dest_pixbuf);
|
||||
GdkPixbuf * dest_pixbuf,
|
||||
gint scaled_width,
|
||||
gint scaled_height);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue