applications/gnome-control-center
4
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add functions to generate thumbnails for specific types of themes, for

Browse source 
* theme-thumbnail.[ch]:
Add functions to generate thumbnails for specific types of themes, for 
instance a metacity theme thumbnail.


svn path=/trunk/; revision=7653
This commit is contained in:
Denis Washington 2007-05-25 14:35:52 +00:00
parent 7f790a7a9a
commit 4fe155f858
3 changed files with 258 additions and 58 deletions
Download patch file Download diff file Expand all files Collapse all files

6
capplets/common/ChangeLog
View file

@ -1,3 +1,9 @@
2007-05-25 Denis Washington <denisw@svn.gnome.org>
* theme-thumbnail.[ch]:
Add functions to generate thumbnails for specific types of themes, for
instance a metacity theme thumbnail.
2007-05-24 Denis Washington <denisw@svn.gnome.org> 2007-05-24 Denis Washington <denisw@svn.gnome.org>
* gconf-property-editor.c: (peditor_tree_view_widget_changed): * gconf-property-editor.c: (peditor_tree_view_widget_changed):

304
capplets/common/theme-thumbnail.c
View file

@ -104,6 +104,77 @@ hbox_foreach (GtkWidget *widget,
fake_expose_widget (widget, (GdkPixmap *) data, NULL); fake_expose_widget (widget, (GdkPixmap *) data, NULL);
} }
static GdkPixbuf *
create_folder_icon (char *icon_theme_name)
{
GtkIconTheme *icon_theme;
GdkPixbuf *folder_icon = NULL, *retval;
GtkIconInfo *folder_icon_info;
const gchar *filename;
gchar *example_icon_name;
int width, height;
gdouble scale;
icon_theme = gtk_icon_theme_new ();
gtk_icon_theme_set_custom_theme (icon_theme, icon_theme_name);
folder_icon_info = NULL;
/* Get the Example icon name in the theme if specified */
example_icon_name = gtk_icon_theme_get_example_icon_name (icon_theme);
if (example_icon_name != NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, example_icon_name, 48, GTK_ICON_LOOKUP_FORCE_SVG);
g_free (example_icon_name);
/* If an Example is not specified, fall back to using the folder icons in
the order of Icon Nameing Spec, "gnome-fs-directory", and "folder" */
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "x-directory-normal", 48, GTK_ICON_LOOKUP_FORCE_SVG);
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "gnome-fs-directory", 48, GTK_ICON_LOOKUP_FORCE_SVG);
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "folder", 48, GTK_ICON_LOOKUP_FORCE_SVG);
g_object_unref (icon_theme);
if (folder_icon_info != NULL)
{
filename = gtk_icon_info_get_filename (folder_icon_info);
if (filename != NULL)
{
folder_icon = gdk_pixbuf_new_from_file (filename, NULL);
}
gtk_icon_info_free (folder_icon_info);
}
/* render the icon to the thumbnail */
if (folder_icon == NULL)
{
GtkWidget *dummy;
dummy = gtk_label_new ("");
folder_icon = gtk_widget_render_icon (dummy,
GTK_STOCK_MISSING_IMAGE,
GTK_ICON_SIZE_DIALOG,
NULL);
gtk_widget_destroy (dummy);
}
/* Some icons don't come back at the requested dimensions, so we need to scale
* them. The width is usually the largest dimension for icons that come at
* irregular sizes, so use this to calculate the scale factor
*/
scale = 48.0 / gdk_pixbuf_get_width (folder_icon);
width = 48;
height = scale * gdk_pixbuf_get_height (folder_icon);
retval = gdk_pixbuf_scale_simple (folder_icon, width, height, GDK_INTERP_BILINEAR);
g_object_unref (folder_icon);
return retval;
}
static void static void
create_image (ThemeThumbnailData *theme_thumbnail_data, create_image (ThemeThumbnailData *theme_thumbnail_data,
GdkPixbuf *pixbuf) GdkPixbuf *pixbuf)
@ -120,13 +191,8 @@ create_image (ThemeThumbnailData *theme_thumbnail_data,
MetaFrameFlags flags; MetaFrameFlags flags;
MetaTheme *theme = NULL; MetaTheme *theme = NULL;
GtkSettings *settings; GtkSettings *settings;
GtkIconTheme *icon_theme; GdkPixbuf *icon;
GdkPixbuf *folder_icon = NULL;
GtkIconInfo *folder_icon_info;
const gchar *filename;
gchar *example_icon_name;
int width, height; int width, height;
double scale;
settings = gtk_settings_get_default (); settings = gtk_settings_get_default ();
g_object_set (G_OBJECT (settings), g_object_set (G_OBJECT (settings),
@ -205,55 +271,11 @@ create_image (ThemeThumbnailData *theme_thumbnail_data,
gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT); gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT);
/* Handle the icon theme */ /* Handle the icon theme */
icon_theme = gtk_icon_theme_new (); icon = create_folder_icon ((char *) theme_thumbnail_data->icon_theme_name->data);
gtk_icon_theme_set_custom_theme (icon_theme, (char *) theme_thumbnail_data->icon_theme_name->data); width = gdk_pixbuf_get_width (icon);
height = gdk_pixbuf_get_height (icon);
folder_icon_info = NULL; gdk_pixbuf_composite (icon,
/* Get the Example icon name in the theme if specified */
example_icon_name = gtk_icon_theme_get_example_icon_name (icon_theme);
if (example_icon_name != NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, example_icon_name, 48, GTK_ICON_LOOKUP_FORCE_SVG);
g_free (example_icon_name);
/* If an Example is not specified, fall back to using the folder icons in
the order of Icon Nameing Spec, "gnome-fs-directory", and "folder" */
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "x-directory-normal", 48, GTK_ICON_LOOKUP_FORCE_SVG);
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "gnome-fs-directory", 48, GTK_ICON_LOOKUP_FORCE_SVG);
if (folder_icon_info == NULL)
folder_icon_info = gtk_icon_theme_lookup_icon (icon_theme, "folder", 48, GTK_ICON_LOOKUP_FORCE_SVG);
g_object_unref (icon_theme);
if (folder_icon_info != NULL)
{
filename = gtk_icon_info_get_filename (folder_icon_info);
if (filename != NULL)
{
folder_icon = gdk_pixbuf_new_from_file (filename, NULL);
}
gtk_icon_info_free (folder_icon_info);
}
/* render the icon to the thumbnail */
if (folder_icon == NULL)
folder_icon = gtk_widget_render_icon (window,
GTK_STOCK_MISSING_IMAGE,
GTK_ICON_SIZE_DIALOG,
NULL);
/* Some icons don't come back at the requested dimensions, so we need to scale
* them. The width is usually the largest dimension for icons that come at
* irregular sizes, so use this to calculate the scale factor
*/
scale = 48.0 / gdk_pixbuf_get_width (folder_icon);
width = 48;
height = scale * gdk_pixbuf_get_height (folder_icon);
gdk_pixbuf_composite (folder_icon,
pixbuf, pixbuf,
align->allocation.x + align->allocation.width - width - 5, align->allocation.x + align->allocation.width - width - 5,
align->allocation.y + align->allocation.height - height - 5, align->allocation.y + align->allocation.height - height - 5,
@ -261,10 +283,10 @@ create_image (ThemeThumbnailData *theme_thumbnail_data,
height, height,
align->allocation.x + align->allocation.width - width - 5, align->allocation.x + align->allocation.width - width - 5,
align->allocation.y + align->allocation.height - height - 5, align->allocation.y + align->allocation.height - height - 5,
scale, 1.0,
scale, 1.0,
GDK_INTERP_BILINEAR, 255); GDK_INTERP_BILINEAR, 255);
g_object_unref (folder_icon); g_object_unref (icon);
gtk_widget_destroy (window); gtk_widget_destroy (window);
} }
@ -681,3 +703,171 @@ theme_thumbnail_factory_init (int argc, char *argv[])
theme_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref); theme_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
} }
/* Functions for specific types of themes */
GdkPixbuf *
generate_gtk_theme_thumbnail (GnomeThemeInfo *info)
{
GtkSettings *settings;
char *current_theme;
GtkWidget *window, *vbox, *hbox, *stock_button, *checkbox, *radio, *progress;
GtkRequisition requisition;
GtkAllocation allocation;
GdkVisual *visual;
GdkPixmap *pixmap;
GdkPixbuf *pixbuf, *ret;
settings = gtk_settings_get_default ();
g_object_get (G_OBJECT (settings), "gtk-theme-name", &current_theme, NULL);
g_object_set (G_OBJECT (settings), "gtk-theme-name", info->name, NULL);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT + 20);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_container_add (GTK_CONTAINER (window), vbox);
stock_button = gtk_button_new_from_stock (GTK_STOCK_OPEN);
gtk_box_pack_start (GTK_BOX (vbox), stock_button, FALSE, FALSE, 0);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
checkbox = gtk_check_button_new ();
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (checkbox), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), checkbox, FALSE, FALSE, 0);
radio = gtk_radio_button_new_from_widget (NULL);
gtk_box_pack_start (GTK_BOX (hbox), radio, FALSE, FALSE, 0);
progress = gtk_progress_bar_new ();
gtk_box_pack_start (GTK_BOX (hbox), progress, TRUE, TRUE, 0);
gtk_widget_show_all (vbox);
gtk_widget_realize (stock_button);
gtk_widget_realize (GTK_BIN (stock_button)->child);
gtk_widget_realize (checkbox);
gtk_widget_realize (radio);
gtk_widget_realize (progress);
gtk_widget_map (stock_button);
gtk_widget_map (GTK_BIN (stock_button)->child);
gtk_widget_map (checkbox);
gtk_widget_map (radio);
gtk_widget_map (progress);
gtk_widget_size_request (window, &requisition);
allocation.x = 0;
allocation.y = 0;
allocation.width = ICON_SIZE_WIDTH;
allocation.height = ICON_SIZE_HEIGHT;
gtk_widget_size_allocate (window, &allocation);
gtk_widget_size_request (window, &requisition);
/* Draw the window */
gtk_widget_ensure_style (window);
g_assert (window->style);
g_assert (window->style->font_desc);
/* Create a pixmap */
visual = gtk_widget_get_visual (window);
pixmap = gdk_pixmap_new (NULL, ICON_SIZE_WIDTH, ICON_SIZE_HEIGHT, visual->depth);
gdk_drawable_set_colormap (GDK_DRAWABLE (pixmap), gtk_widget_get_colormap (window));
fake_expose_widget (window, pixmap, NULL);
fake_expose_widget (stock_button, pixmap, NULL);
gtk_container_foreach (GTK_CONTAINER (GTK_BIN (GTK_BIN (stock_button)->child)->child),
hbox_foreach,
pixmap);
fake_expose_widget (GTK_BIN (stock_button)->child, pixmap, NULL);
fake_expose_widget (checkbox, pixmap, NULL);
fake_expose_widget (radio, pixmap, NULL);
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2);
gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2);
ret = gdk_pixbuf_scale_simple (pixbuf, 96, 48, GDK_INTERP_BILINEAR);
g_object_unref (pixbuf);
gtk_widget_destroy (window);
g_object_set (G_OBJECT (settings), "gtk-theme-name", current_theme, NULL);
return ret;
}
GdkPixbuf *
generate_metacity_theme_thumbnail (GnomeThemeInfo *info)
{
GtkWidget *window, *preview, *dummy;
MetaFrameFlags flags;
MetaTheme *theme;
GtkRequisition requisition;
GtkAllocation allocation;
GdkVisual *visual;
GdkPixmap *pixmap;
GdkPixbuf *pixbuf, *ret;
theme = meta_theme_load (info->name, NULL);
flags = META_FRAME_ALLOWS_DELETE |
META_FRAME_ALLOWS_MENU |
META_FRAME_ALLOWS_MINIMIZE |
META_FRAME_ALLOWS_MAXIMIZE |
META_FRAME_ALLOWS_VERTICAL_RESIZE |
META_FRAME_ALLOWS_HORIZONTAL_RESIZE |
META_FRAME_HAS_FOCUS |
META_FRAME_ALLOWS_SHADE |
META_FRAME_ALLOWS_MOVE;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2);
preview = meta_preview_new ();
meta_preview_set_frame_flags (META_PREVIEW (preview), flags);
meta_preview_set_theme (META_PREVIEW (preview), theme);
meta_preview_set_title (META_PREVIEW (preview), "");
gtk_container_add (GTK_CONTAINER (window), preview);
dummy = gtk_label_new ("");
gtk_container_add (GTK_CONTAINER (preview), dummy);
gtk_widget_realize (window);
gtk_widget_realize (preview);
gtk_widget_realize (dummy);
gtk_widget_show_all (preview);
gtk_widget_map (dummy);
gtk_widget_size_request (window, &requisition);
allocation.x = 0;
allocation.y = 0;
allocation.width = ICON_SIZE_WIDTH;
allocation.height = ICON_SIZE_WIDTH / 2;
gtk_widget_size_allocate (window, &allocation);
gtk_widget_size_request (window, &requisition);
/* Draw the window */
gtk_widget_ensure_style (window);
g_assert (window->style);
g_assert (window->style->font_desc);
/* Create a pixmap */
visual = gtk_widget_get_visual (window);
pixmap = gdk_pixmap_new (NULL, ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2, visual->depth);
gdk_drawable_set_colormap (GDK_DRAWABLE (pixmap), gtk_widget_get_colormap (window));
fake_expose_widget (window, pixmap, NULL);
fake_expose_widget (preview, pixmap, NULL);
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2);
gdk_pixbuf_get_from_drawable (pixbuf, pixmap, NULL, 0, 0, 0, 0, ICON_SIZE_WIDTH, ICON_SIZE_WIDTH / 2);
ret = gdk_pixbuf_scale_simple (pixbuf, 96, 48, GDK_INTERP_BILINEAR);
g_object_unref (pixbuf);
gtk_widget_destroy (window);
return ret;
}
GdkPixbuf *
generate_icon_theme_thumbnail (GnomeThemeIconInfo *info)
{
return create_folder_icon (info->name);
}

4
capplets/common/theme-thumbnail.h
View file

@ -19,6 +19,10 @@ void theme_thumbnail_invalidate_cache (GnomeThemeMetaInfo *meta_theme_info
void theme_thumbnail_factory_init (int argc, void theme_thumbnail_factory_init (int argc,
char *argv[]); char *argv[]);
/* Functions for specific types of themes */
GdkPixbuf *generate_gtk_theme_thumbnail (GnomeThemeInfo *theme_info);
GdkPixbuf *generate_metacity_theme_thumbnail (GnomeThemeInfo *theme_info);
GdkPixbuf *generate_icon_theme_thumbnail (GnomeThemeIconInfo *theme_info);
#endif /* __THEME_THUMBNAIL_H__ */ #endif /* __THEME_THUMBNAIL_H__ */