moving from https://github.com/perberos/mate-desktop-environment

author: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
committer: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
commit: 0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree: 43261e815529cb9518ed7be37af13b846af8b26b /libcaja-private/caja-icon-info.c
download: caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.bz2
caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.xz
1 files changed, 751 insertions, 0 deletions
diff --git a/libcaja-private/caja-icon-info.c b/libcaja-private/caja-icon-info.c
new file mode 100644
index 00000000..63ed8792
--- /dev/null
+++ b/libcaja-private/caja-icon-info.c
@@ -0,0 +1,751 @@
+/* caja-icon-info.c
+ * Copyright (C) 2007 Red Hat, Inc., Alexander Larsson <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+#include <string.h>
+#include "caja-icon-info.h"
+#include "caja-default-file-icon.h"
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+#include <eel/eel-gdk-pixbuf-extensions.h>
+
+struct _CajaIconInfo
+{
+ GObject parent;
+
+ gboolean sole_owner;
+ guint64 last_use_time;
+ GdkPixbuf *pixbuf;
+
+ gboolean got_embedded_rect;
+ GdkRectangle embedded_rect;
+ gint n_attach_points;
+ GdkPoint *attach_points;
+ char *display_name;
+ char *icon_name;
+};
+
+struct _CajaIconInfoClass
+{
+ GObjectClass parent_class;
+};
+
+static void schedule_reap_cache (void);
+
+G_DEFINE_TYPE (CajaIconInfo,
+ caja_icon_info,
+ G_TYPE_OBJECT);
+
+static void
+caja_icon_info_init (CajaIconInfo *icon)
+{
+ icon->last_use_time = g_thread_gettime ();
+ icon->sole_owner = TRUE;
+}
+
+gboolean
+caja_icon_info_is_fallback (CajaIconInfo *icon)
+{
+ return icon->pixbuf == NULL;
+}
+
+static void
+pixbuf_toggle_notify (gpointer info,
+ GObject *object,
+ gboolean is_last_ref)
+{
+ CajaIconInfo *icon = info;
+
+ if (is_last_ref)
+ {
+ icon->sole_owner = TRUE;
+ g_object_remove_toggle_ref (object,
+ pixbuf_toggle_notify,
+ info);
+ icon->last_use_time = g_thread_gettime ();
+ schedule_reap_cache ();
+ }
+}
+
+static void
+caja_icon_info_finalize (GObject *object)
+{
+ CajaIconInfo *icon;
+
+ icon = CAJA_ICON_INFO (object);
+
+ if (!icon->sole_owner && icon->pixbuf)
+ {
+ g_object_remove_toggle_ref (G_OBJECT (icon->pixbuf),
+ pixbuf_toggle_notify,
+ icon);
+ }
+
+ if (icon->pixbuf)
+ {
+ g_object_unref (icon->pixbuf);
+ }
+ g_free (icon->attach_points);
+ g_free (icon->display_name);
+ g_free (icon->icon_name);
+
+ G_OBJECT_CLASS (caja_icon_info_parent_class)->finalize (object);
+}
+
+static void
+caja_icon_info_class_init (CajaIconInfoClass *icon_info_class)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) icon_info_class;
+
+ gobject_class->finalize = caja_icon_info_finalize;
+
+}
+
+CajaIconInfo *
+caja_icon_info_new_for_pixbuf (GdkPixbuf *pixbuf)
+{
+ CajaIconInfo *icon;
+
+ icon = g_object_new (CAJA_TYPE_ICON_INFO, NULL);
+
+ if (pixbuf)
+ {
+ icon->pixbuf = g_object_ref (pixbuf);
+ }
+
+ return icon;
+}
+
+static CajaIconInfo *
+caja_icon_info_new_for_icon_info (GtkIconInfo *icon_info)
+{
+ CajaIconInfo *icon;
+ GdkPoint *points;
+ gint n_points;
+ const char *filename;
+ char *basename, *p;
+
+ icon = g_object_new (CAJA_TYPE_ICON_INFO, NULL);
+
+ icon->pixbuf = gtk_icon_info_load_icon (icon_info, NULL);
+
+ icon->got_embedded_rect = gtk_icon_info_get_embedded_rect (icon_info,
+ &icon->embedded_rect);
+
+ if (gtk_icon_info_get_attach_points (icon_info, &points, &n_points))
+ {
+ icon->n_attach_points = n_points;
+ icon->attach_points = points;
+ }
+
+ icon->display_name = g_strdup (gtk_icon_info_get_display_name (icon_info));
+
+ filename = gtk_icon_info_get_filename (icon_info);
+ if (filename != NULL)
+ {
+ basename = g_path_get_basename (filename);
+ p = strrchr (basename, '.');
+ if (p)
+ {
+ *p = 0;
+ }
+ icon->icon_name = basename;
+ }
+
+ return icon;
+}
+
+
+typedef struct
+{
+ GIcon *icon;
+ int size;
+} LoadableIconKey;
+
+typedef struct
+{
+ char *filename;
+ int size;
+} ThemedIconKey;
+
+static GHashTable *loadable_icon_cache = NULL;
+static GHashTable *themed_icon_cache = NULL;
+static guint reap_cache_timeout = 0;
+
+#define NSEC_PER_SEC ((guint64)1000000000L)
+
+static guint time_now;
+
+static gboolean
+reap_old_icon (gpointer key,
+ gpointer value,
+ gpointer user_info)
+{
+ CajaIconInfo *icon = value;
+ gboolean *reapable_icons_left = user_info;
+
+ if (icon->sole_owner)
+ {
+ if (time_now - icon->last_use_time > 30 * NSEC_PER_SEC)
+ {
+ /* This went unused 30 secs ago. reap */
+ return TRUE;
+ }
+ else
+ {
+ /* We can reap this soon */
+ *reapable_icons_left = TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+static gboolean
+reap_cache (gpointer data)
+{
+ gboolean reapable_icons_left;
+
+ reapable_icons_left = TRUE;
+
+ time_now = g_thread_gettime ();
+
+ if (loadable_icon_cache)
+ {
+ g_hash_table_foreach_remove (loadable_icon_cache,
+ reap_old_icon,
+ &reapable_icons_left);
+ }
+
+ if (themed_icon_cache)
+ {
+ g_hash_table_foreach_remove (themed_icon_cache,
+ reap_old_icon,
+ &reapable_icons_left);
+ }
+
+ if (reapable_icons_left)
+ {
+ return TRUE;
+ }
+ else
+ {
+ reap_cache_timeout = 0;
+ return FALSE;
+ }
+}
+
+static void
+schedule_reap_cache (void)
+{
+ if (reap_cache_timeout == 0)
+ {
+ reap_cache_timeout = g_timeout_add_seconds_full (0, 5,
+ reap_cache,
+ NULL, NULL);
+ }
+}
+
+void
+caja_icon_info_clear_caches (void)
+{
+ if (loadable_icon_cache)
+ {
+ g_hash_table_remove_all (loadable_icon_cache);
+ }
+
+ if (themed_icon_cache)
+ {
+ g_hash_table_remove_all (themed_icon_cache);
+ }
+}
+
+static guint
+loadable_icon_key_hash (LoadableIconKey *key)
+{
+ return g_icon_hash (key->icon) ^ key->size;
+}
+
+static gboolean
+loadable_icon_key_equal (const LoadableIconKey *a,
+ const LoadableIconKey *b)
+{
+ return a->size == b->size &&
+ g_icon_equal (a->icon, b->icon);
+}
+
+static LoadableIconKey *
+loadable_icon_key_new (GIcon *icon, int size)
+{
+ LoadableIconKey *key;
+
+ key = g_slice_new (LoadableIconKey);
+ key->icon = g_object_ref (icon);
+ key->size = size;
+
+ return key;
+}
+
+static void
+loadable_icon_key_free (LoadableIconKey *key)
+{
+ g_object_unref (key->icon);
+ g_slice_free (LoadableIconKey, key);
+}
+
+static guint
+themed_icon_key_hash (ThemedIconKey *key)
+{
+ return g_str_hash (key->filename) ^ key->size;
+}
+
+static gboolean
+themed_icon_key_equal (const ThemedIconKey *a,
+ const ThemedIconKey *b)
+{
+ return a->size == b->size &&
+ g_str_equal (a->filename, b->filename);
+}
+
+static ThemedIconKey *
+themed_icon_key_new (const char *filename, int size)
+{
+ ThemedIconKey *key;
+
+ key = g_slice_new (ThemedIconKey);
+ key->filename = g_strdup (filename);
+ key->size = size;
+
+ return key;
+}
+
+static void
+themed_icon_key_free (ThemedIconKey *key)
+{
+ g_free (key->filename);
+ g_slice_free (ThemedIconKey, key);
+}
+
+CajaIconInfo *
+caja_icon_info_lookup (GIcon *icon,
+ int size)
+{
+ CajaIconInfo *icon_info;
+ GdkPixbuf *pixbuf;
+
+ if (G_IS_LOADABLE_ICON (icon))
+ {
+ LoadableIconKey lookup_key;
+ LoadableIconKey *key;
+ GInputStream *stream;
+
+ if (loadable_icon_cache == NULL)
+ {
+ loadable_icon_cache =
+ g_hash_table_new_full ((GHashFunc)loadable_icon_key_hash,
+ (GEqualFunc)loadable_icon_key_equal,
+ (GDestroyNotify) loadable_icon_key_free,
+ (GDestroyNotify) g_object_unref);
+ }
+
+ lookup_key.icon = icon;
+ lookup_key.size = size;
+
+ icon_info = g_hash_table_lookup (loadable_icon_cache, &lookup_key);
+ if (icon_info)
+ {
+ return g_object_ref (icon_info);
+ }
+
+ pixbuf = NULL;
+ stream = g_loadable_icon_load (G_LOADABLE_ICON (icon),
+ size,
+ NULL, NULL, NULL);
+ if (stream)
+ {
+ pixbuf = eel_gdk_pixbuf_load_from_stream_at_size (stream, size);
+ g_object_unref (stream);
+ }
+
+ icon_info = caja_icon_info_new_for_pixbuf (pixbuf);
+
+ key = loadable_icon_key_new (icon, size);
+ g_hash_table_insert (loadable_icon_cache, key, icon_info);
+
+ return g_object_ref (icon_info);
+ }
+ else if (G_IS_THEMED_ICON (icon))
+ {
+ const char * const *names;
+ ThemedIconKey lookup_key;
+ ThemedIconKey *key;
+ GtkIconTheme *icon_theme;
+ GtkIconInfo *gtkicon_info;
+ const char *filename;
+
+ if (themed_icon_cache == NULL)
+ {
+ themed_icon_cache =
+ g_hash_table_new_full ((GHashFunc)themed_icon_key_hash,
+ (GEqualFunc)themed_icon_key_equal,
+ (GDestroyNotify) themed_icon_key_free,
+ (GDestroyNotify) g_object_unref);
+ }
+
+ names = g_themed_icon_get_names (G_THEMED_ICON (icon));
+
+ icon_theme = gtk_icon_theme_get_default ();
+ gtkicon_info = gtk_icon_theme_choose_icon (icon_theme, (const char **)names, size, 0);
+
+ if (gtkicon_info == NULL)
+ {
+ return caja_icon_info_new_for_pixbuf (NULL);
+ }
+
+ filename = gtk_icon_info_get_filename (gtkicon_info);
+
+ lookup_key.filename = (char *)filename;
+ lookup_key.size = size;
+
+ icon_info = g_hash_table_lookup (themed_icon_cache, &lookup_key);
+ if (icon_info)
+ {
+ gtk_icon_info_free (gtkicon_info);
+ return g_object_ref (icon_info);
+ }
+
+ icon_info = caja_icon_info_new_for_icon_info (gtkicon_info);
+
+ key = themed_icon_key_new (filename, size);
+ g_hash_table_insert (themed_icon_cache, key, icon_info);
+
+ gtk_icon_info_free (gtkicon_info);
+
+ return g_object_ref (icon_info);
+ }
+ else
+ {
+ GdkPixbuf *pixbuf;
+ GtkIconInfo *gtk_icon_info;
+
+ gtk_icon_info = gtk_icon_theme_lookup_by_gicon (gtk_icon_theme_get_default (),
+ icon,
+ size,
+ GTK_ICON_LOOKUP_GENERIC_FALLBACK);
+ if (gtk_icon_info != NULL)
+ {
+ pixbuf = gtk_icon_info_load_icon (gtk_icon_info, NULL);
+ gtk_icon_info_free (gtk_icon_info);
+ }
+ else
+ {
+ pixbuf = NULL;
+ }
+
+ return caja_icon_info_new_for_pixbuf (pixbuf);
+ }
+}
+
+CajaIconInfo *
+caja_icon_info_lookup_from_name (const char *name,
+ int size)
+{
+ GIcon *icon;
+ CajaIconInfo *info;
+
+ icon = g_themed_icon_new (name);
+ info = caja_icon_info_lookup (icon, size);
+ g_object_unref (icon);
+ return info;
+}
+
+CajaIconInfo *
+caja_icon_info_lookup_from_path (const char *path,
+ int size)
+{
+ GFile *icon_file;
+ GIcon *icon;
+ CajaIconInfo *info;
+
+ icon_file = g_file_new_for_path (path);
+ icon = g_file_icon_new (icon_file);
+ info = caja_icon_info_lookup (icon, size);
+ g_object_unref (icon);
+ g_object_unref (icon_file);
+ return info;
+}
+
+GdkPixbuf *
+caja_icon_info_get_pixbuf_nodefault (CajaIconInfo *icon)
+{
+ GdkPixbuf *res;
+
+ if (icon->pixbuf == NULL)
+ {
+ res = NULL;
+ }
+ else
+ {
+ res = g_object_ref (icon->pixbuf);
+
+ if (icon->sole_owner)
+ {
+ icon->sole_owner = FALSE;
+ g_object_add_toggle_ref (G_OBJECT (res),
+ pixbuf_toggle_notify,
+ icon);
+ }
+ }
+
+ return res;
+}
+
+
+GdkPixbuf *
+caja_icon_info_get_pixbuf (CajaIconInfo *icon)
+{
+ GdkPixbuf *res;
+
+ res = caja_icon_info_get_pixbuf_nodefault (icon);
+ if (res == NULL)
+ {
+ res = gdk_pixbuf_new_from_data (caja_default_file_icon,
+ GDK_COLORSPACE_RGB,
+ TRUE,
+ 8,
+ caja_default_file_icon_width,
+ caja_default_file_icon_height,
+ caja_default_file_icon_width * 4, /* stride */
+ NULL, /* don't destroy info */
+ NULL);
+ }
+
+ return res;
+}
+
+GdkPixbuf *
+caja_icon_info_get_pixbuf_nodefault_at_size (CajaIconInfo *icon,
+ gsize forced_size)
+{
+ GdkPixbuf *pixbuf, *scaled_pixbuf;
+ int w, h, s;
+ double scale;
+
+ pixbuf = caja_icon_info_get_pixbuf_nodefault (icon);
+
+ if (pixbuf == NULL)
+ return NULL;
+
+ w = gdk_pixbuf_get_width (pixbuf);
+ h = gdk_pixbuf_get_height (pixbuf);
+ s = MAX (w, h);
+ if (s == forced_size)
+ {
+ return pixbuf;
+ }
+
+ scale = (double)forced_size / s;
+ scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
+ w * scale, h * scale,
+ GDK_INTERP_BILINEAR);
+ g_object_unref (pixbuf);
+ return scaled_pixbuf;
+}
+
+
+GdkPixbuf *
+caja_icon_info_get_pixbuf_at_size (CajaIconInfo *icon,
+ gsize forced_size)
+{
+ GdkPixbuf *pixbuf, *scaled_pixbuf;
+ int w, h, s;
+ double scale;
+
+ pixbuf = caja_icon_info_get_pixbuf (icon);
+
+ w = gdk_pixbuf_get_width (pixbuf);
+ h = gdk_pixbuf_get_height (pixbuf);
+ s = MAX (w, h);
+ if (s == forced_size)
+ {
+ return pixbuf;
+ }
+
+ scale = (double)forced_size / s;
+ scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
+ w * scale, h * scale,
+ GDK_INTERP_BILINEAR);
+ g_object_unref (pixbuf);
+ return scaled_pixbuf;
+}
+
+gboolean
+caja_icon_info_get_embedded_rect (CajaIconInfo *icon,
+ GdkRectangle *rectangle)
+{
+ *rectangle = icon->embedded_rect;
+ return icon->got_embedded_rect;
+}
+
+gboolean
+caja_icon_info_get_attach_points (CajaIconInfo *icon,
+ GdkPoint **points,
+ gint *n_points)
+{
+ *n_points = icon->n_attach_points;
+ *points = icon->attach_points;
+ return icon->n_attach_points != 0;
+}
+
+const char* caja_icon_info_get_display_name(CajaIconInfo* icon)
+{
+ return icon->display_name;
+}
+
+const char* caja_icon_info_get_used_name(CajaIconInfo* icon)
+{
+ return icon->icon_name;
+}
+
+/* Return nominal icon size for given zoom level.
+ * @zoom_level: zoom level for which to find matching icon size.
+ *
+ * Return value: icon size between CAJA_ICON_SIZE_SMALLEST and
+ * CAJA_ICON_SIZE_LARGEST, inclusive.
+ */
+guint
+caja_get_icon_size_for_zoom_level (CajaZoomLevel zoom_level)
+{
+ switch (zoom_level)
+ {
+ case CAJA_ZOOM_LEVEL_SMALLEST:
+ return CAJA_ICON_SIZE_SMALLEST;
+ case CAJA_ZOOM_LEVEL_SMALLER:
+ return CAJA_ICON_SIZE_SMALLER;
+ case CAJA_ZOOM_LEVEL_SMALL:
+ return CAJA_ICON_SIZE_SMALL;
+ case CAJA_ZOOM_LEVEL_STANDARD:
+ return CAJA_ICON_SIZE_STANDARD;
+ case CAJA_ZOOM_LEVEL_LARGE:
+ return CAJA_ICON_SIZE_LARGE;
+ case CAJA_ZOOM_LEVEL_LARGER:
+ return CAJA_ICON_SIZE_LARGER;
+ case CAJA_ZOOM_LEVEL_LARGEST:
+ return CAJA_ICON_SIZE_LARGEST;
+ }
+ g_return_val_if_reached (CAJA_ICON_SIZE_STANDARD);
+}
+
+float
+caja_get_relative_icon_size_for_zoom_level (CajaZoomLevel zoom_level)
+{
+ return (float)caja_get_icon_size_for_zoom_level (zoom_level) / CAJA_ICON_SIZE_STANDARD;
+}
+
+guint
+caja_icon_get_larger_icon_size (guint size)
+{
+ if (size < CAJA_ICON_SIZE_SMALLEST)
+ {
+ return CAJA_ICON_SIZE_SMALLEST;
+ }
+ if (size < CAJA_ICON_SIZE_SMALLER)
+ {
+ return CAJA_ICON_SIZE_SMALLER;
+ }
+ if (size < CAJA_ICON_SIZE_SMALL)
+ {
+ return CAJA_ICON_SIZE_SMALL;
+ }
+ if (size < CAJA_ICON_SIZE_STANDARD)
+ {
+ return CAJA_ICON_SIZE_STANDARD;
+ }
+ if (size < CAJA_ICON_SIZE_LARGE)
+ {
+ return CAJA_ICON_SIZE_LARGE;
+ }
+ if (size < CAJA_ICON_SIZE_LARGER)
+ {
+ return CAJA_ICON_SIZE_LARGER;
+ }
+ return CAJA_ICON_SIZE_LARGEST;
+}
+
+guint
+caja_icon_get_smaller_icon_size (guint size)
+{
+ if (size > CAJA_ICON_SIZE_LARGEST)
+ {
+ return CAJA_ICON_SIZE_LARGEST;
+ }
+ if (size > CAJA_ICON_SIZE_LARGER)
+ {
+ return CAJA_ICON_SIZE_LARGER;
+ }
+ if (size > CAJA_ICON_SIZE_LARGE)
+ {
+ return CAJA_ICON_SIZE_LARGE;
+ }
+ if (size > CAJA_ICON_SIZE_STANDARD)
+ {
+ return CAJA_ICON_SIZE_STANDARD;
+ }
+ if (size > CAJA_ICON_SIZE_SMALL)
+ {
+ return CAJA_ICON_SIZE_SMALL;
+ }
+ if (size > CAJA_ICON_SIZE_SMALLER)
+ {
+ return CAJA_ICON_SIZE_SMALLER;
+ }
+ return CAJA_ICON_SIZE_SMALLEST;
+}
+
+gint
+caja_get_icon_size_for_stock_size (GtkIconSize size)
+{
+ gint w, h;
+
+ if (gtk_icon_size_lookup (size, &w, &h))
+ {
+ return MAX (w, h);
+ }
+ return CAJA_ZOOM_LEVEL_STANDARD;
+}
+
+
+guint
+caja_icon_get_emblem_size_for_icon_size (guint size)
+{
+ if (size >= 96)
+ return 48;
+ if (size >= 64)
+ return 32;
+ if (size >= 48)
+ return 24;
+ if (size >= 24)
+ return 16;
+ if (size >= 16)
+ return 12;
+
+ return 0; /* no emblems for smaller sizes */
+}
author	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
committer	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
commit	0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree	43261e815529cb9518ed7be37af13b846af8b26b /libcaja-private/caja-icon-info.c
download	caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.bz2 caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.xz