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thunar-usagebars/thunar/thunar-icon-factory.c
4aiman e969f94310 thunar 4.20.2 upstream 
Tree of tag thunar-4.20.2 (commit 11a519f) from https://gitlab.xfce.org/xfce/thunar.
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2026-11-03 22:42:48 +03:00

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/* vi:set et ai sw=2 sts=2 ts=2: */
/*-
* Copyright (c) 2005-2006 Benedikt Meurer <benny@xfce.org>
* Copyright (c) 2009-2011 Jannis Pohlmann <jannis@xfce.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "thunar/thunar-gobject-extensions.h"
#include "thunar/thunar-icon-factory.h"
#include "thunar/thunar-preferences.h"
#include "thunar/thunar-private.h"
#include "thunar/thunar-util.h"
/* the timeout until the sweeper is run (in seconds) */
#define THUNAR_ICON_FACTORY_SWEEP_TIMEOUT (30)
/* Property identifiers */
enum
{
PROP_0,
PROP_ICON_THEME,
PROP_THUMBNAIL_MODE,
PROP_THUMBNAIL_DRAW_FRAMES,
PROP_THUMBNAIL_SIZE,
PROP_THUMBNAIL_MAX_FILE_SIZE,
};
typedef struct _ThunarIconKey ThunarIconKey;
static void
thunar_icon_factory_dispose (GObject *object);
static void
thunar_icon_factory_finalize (GObject *object);
static void
thunar_icon_factory_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void
thunar_icon_factory_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static gboolean
thunar_icon_factory_changed (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer user_data);
static gboolean
thunar_icon_factory_sweep_timer (gpointer user_data);
static void
thunar_icon_factory_sweep_timer_destroy (gpointer user_data);
static GdkPixbuf *
thunar_icon_factory_load_from_file (ThunarIconFactory *factory,
const gchar *path,
gint size,
gint scale_factor);
static GdkPixbuf *
thunar_icon_factory_lookup_icon (ThunarIconFactory *factory,
const gchar *name,
gint size,
gint scale_factor,
gboolean wants_default,
gboolean symbolic,
GtkStyleContext *context);
static guint
thunar_icon_key_hash (gconstpointer data);
static gboolean
thunar_icon_key_equal (gconstpointer a,
gconstpointer b);
static void
thunar_icon_key_free (gpointer data);
static GdkPixbuf *
thunar_icon_factory_load_fallback (ThunarIconFactory *factory,
gint size,
gint scale_factor,
gboolean symbolic);
struct _ThunarIconFactoryClass
{
GObjectClass __parent__;
};
struct _ThunarIconFactory
{
GObject __parent__;
ThunarPreferences *preferences;
GHashTable *icon_cache;
GtkIconTheme *icon_theme;
ThunarThumbnailMode thumbnail_mode;
gboolean thumbnail_draw_frames;
ThunarThumbnailSize thumbnail_size;
/* maximum file size (in bytes) allowed to be thumbnailed */
guint64 thumbnail_max_file_size;
guint sweep_timer_id;
gulong changed_hook_id;
/* stamp that gets bumped when the theme changes */
guint theme_stamp;
};
struct _ThunarIconKey
{
gchar *name;
gint size;
gint scale_factor;
gboolean symbolic;
guint color_hash;
};
typedef struct
{
ThunarFileIconState icon_state;
ThunarFileThumbState thumb_state;
gint icon_size;
guint stamp;
gboolean thumbnail_draw_frames;
gboolean symbolic;
GdkPixbuf *icon;
} ThunarIconStore;
static GQuark thunar_icon_factory_quark = 0;
static GQuark thunar_icon_factory_store_quark = 0;
G_DEFINE_TYPE (ThunarIconFactory, thunar_icon_factory, G_TYPE_OBJECT)
static void
thunar_icon_factory_class_init (ThunarIconFactoryClass *klass)
{
GObjectClass *gobject_class;
thunar_icon_factory_store_quark = g_quark_from_static_string ("thunar-icon-factory-store");
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose = thunar_icon_factory_dispose;
gobject_class->finalize = thunar_icon_factory_finalize;
gobject_class->get_property = thunar_icon_factory_get_property;
gobject_class->set_property = thunar_icon_factory_set_property;
/**
* ThunarIconFactory:icon-theme:
*
* The #GtkIconTheme on which the given #ThunarIconFactory instance operates
* on.
**/
g_object_class_install_property (gobject_class,
PROP_ICON_THEME,
g_param_spec_object ("icon-theme",
"icon-theme",
"icon-theme",
GTK_TYPE_ICON_THEME,
EXO_PARAM_READABLE));
/**
* ThunarIconFactory:thumbnail-mode:
*
* Whether this #ThunarIconFactory will try to generate and load thumbnails
* when loading icons for #ThunarFile<!---->s.
**/
g_object_class_install_property (gobject_class,
PROP_THUMBNAIL_MODE,
g_param_spec_enum ("thumbnail-mode",
"thumbnail-mode",
"thumbnail-mode",
THUNAR_TYPE_THUMBNAIL_MODE,
THUNAR_THUMBNAIL_MODE_ONLY_LOCAL,
EXO_PARAM_READWRITE));
/**
* ThunarIconFactory:thumbnail-draw-frames:
*
* Whether to draw black frames around thumbnails.
* This looks neat, but will delay the first draw a bit.
* May have an impact on older systems, on folders with many pictures.
**/
g_object_class_install_property (gobject_class,
PROP_THUMBNAIL_DRAW_FRAMES,
g_param_spec_boolean ("thumbnail-draw-frames",
"thumbnail-draw-frames",
"thumbnail-draw-frames",
FALSE,
EXO_PARAM_READWRITE));
/**
* ThunarIconFactory:thumbnail-size:
*
* Size of the thumbnails to load
**/
g_object_class_install_property (gobject_class,
PROP_THUMBNAIL_SIZE,
g_param_spec_enum ("thumbnail-size",
"thumbnail-size",
"thumbnail-size",
THUNAR_TYPE_THUMBNAIL_SIZE,
THUNAR_THUMBNAIL_SIZE_NORMAL,
EXO_PARAM_READWRITE));
/**
* ThunarIconFactory:thumbnail-max-file-size:
*
* Maximum file size (in bytes) allowed to be thumbnailed
**/
g_object_class_install_property (gobject_class,
PROP_THUMBNAIL_MAX_FILE_SIZE,
g_param_spec_uint64 ("thumbnail-max-file-size",
"thumbnail-max-file-size",
"thumbnail-max-file-size",
0, G_MAXUINT64, 0,
EXO_PARAM_READWRITE));
}
static void
thunar_icon_factory_init (ThunarIconFactory *factory)
{
factory->thumbnail_mode = THUNAR_THUMBNAIL_MODE_ONLY_LOCAL;
factory->thumbnail_size = THUNAR_THUMBNAIL_SIZE_NORMAL;
/* connect emission hook for the "changed" signal on the GtkIconTheme class. We use the emission
* hook way here, because that way we can make sure that the icon cache is definetly cleared
* before any other part of the application gets notified about the icon theme change.
*/
factory->changed_hook_id = g_signal_add_emission_hook (g_signal_lookup ("changed", GTK_TYPE_ICON_THEME),
0, thunar_icon_factory_changed, factory, NULL);
/* allocate the hash table for the icon cache */
factory->icon_cache = g_hash_table_new_full (thunar_icon_key_hash, thunar_icon_key_equal,
thunar_icon_key_free, g_object_unref);
}
static void
thunar_icon_factory_dispose (GObject *object)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (object);
_thunar_return_if_fail (THUNAR_IS_ICON_FACTORY (factory));
if (G_UNLIKELY (factory->sweep_timer_id != 0))
g_source_remove (factory->sweep_timer_id);
(*G_OBJECT_CLASS (thunar_icon_factory_parent_class)->dispose) (object);
}
static void
thunar_icon_factory_finalize (GObject *object)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (object);
_thunar_return_if_fail (THUNAR_IS_ICON_FACTORY (factory));
/* clear the icon cache hash table */
g_hash_table_destroy (factory->icon_cache);
/* remove the "changed" emission hook from the GtkIconTheme class */
g_signal_remove_emission_hook (g_signal_lookup ("changed", GTK_TYPE_ICON_THEME), factory->changed_hook_id);
/* disconnect from the associated icon theme (if any) */
if (G_LIKELY (factory->icon_theme != NULL))
{
g_object_set_qdata (G_OBJECT (factory->icon_theme), thunar_icon_factory_quark, NULL);
g_object_unref (G_OBJECT (factory->icon_theme));
}
/* disconnect from the preferences */
g_object_unref (G_OBJECT (factory->preferences));
(*G_OBJECT_CLASS (thunar_icon_factory_parent_class)->finalize) (object);
}
static void
thunar_icon_factory_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (object);
switch (prop_id)
{
case PROP_ICON_THEME:
g_value_set_object (value, factory->icon_theme);
break;
case PROP_THUMBNAIL_MODE:
g_value_set_enum (value, factory->thumbnail_mode);
break;
case PROP_THUMBNAIL_DRAW_FRAMES:
g_value_set_boolean (value, factory->thumbnail_draw_frames);
break;
case PROP_THUMBNAIL_SIZE:
g_value_set_enum (value, factory->thumbnail_size);
break;
case PROP_THUMBNAIL_MAX_FILE_SIZE:
g_value_set_uint64 (value, factory->thumbnail_max_file_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
thunar_icon_factory_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (object);
switch (prop_id)
{
case PROP_THUMBNAIL_MODE:
factory->thumbnail_mode = g_value_get_enum (value);
break;
case PROP_THUMBNAIL_DRAW_FRAMES:
factory->thumbnail_draw_frames = g_value_get_boolean (value);
break;
case PROP_THUMBNAIL_SIZE:
factory->thumbnail_size = g_value_get_enum (value);
break;
case PROP_THUMBNAIL_MAX_FILE_SIZE:
factory->thumbnail_max_file_size = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
thunar_icon_factory_changed (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer user_data)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (user_data);
/* drop all items from the icon cache */
g_hash_table_remove_all (factory->icon_cache);
/* bump the stamp so all file icons are reloaded */
factory->theme_stamp++;
/* keep the emission hook alive */
return TRUE;
}
static gboolean
thunar_icon_check_sweep (ThunarIconKey *key,
GdkPixbuf *pixbuf)
{
return (G_OBJECT (pixbuf)->ref_count == 1);
}
static gboolean
thunar_icon_factory_sweep_timer (gpointer user_data)
{
ThunarIconFactory *factory = THUNAR_ICON_FACTORY (user_data);
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), FALSE);
/* ditch all icons whose ref_count is 1 */
g_hash_table_foreach_remove (factory->icon_cache,
(GHRFunc) (void (*) (void)) thunar_icon_check_sweep,
factory);
return FALSE;
}
static void
thunar_icon_factory_sweep_timer_destroy (gpointer user_data)
{
THUNAR_ICON_FACTORY (user_data)->sweep_timer_id = 0;
}
static inline gboolean
thumbnail_needs_frame (const GdkPixbuf *thumbnail,
gint width,
gint height,
gint size)
{
const guchar *pixels;
gint rowstride;
gint n;
guchar alpha_threshold = 255u; /* An alpha value of 255 means full opacity, 0 is fully transparent. */
/* don't add frames to small thumbnails */
if (size < THUNAR_ICON_SIZE_64)
return FALSE;
/* always add a frame to thumbnails w/o alpha channel */
if (G_LIKELY (!gdk_pixbuf_get_has_alpha (thumbnail)))
return TRUE;
/* get a pointer to the thumbnail data */
pixels = gdk_pixbuf_get_pixels (thumbnail);
/* Data is stored in 4 channels (red, green, blue, alpha). We are only interested in channel 4 (alpha) */
/* check if we have a transparent pixel on the first row */
for (n = width * 4; n > 0; n -= 4)
if (pixels[n - 1] < alpha_threshold)
return FALSE;
/* determine the rowstride */
rowstride = gdk_pixbuf_get_rowstride (thumbnail);
/* skip the first row */
pixels += rowstride;
/* check if we have a transparent pixel in the first or last column */
for (n = height - 2; n > 0; --n, pixels += rowstride)
if (pixels[3] < alpha_threshold || pixels[width * 4 - 1] < alpha_threshold)
return FALSE;
/* check if we have a transparent pixel on the last row */
for (n = width * 4; n > 0; n -= 4)
if (pixels[n - 1] < alpha_threshold)
return FALSE;
return TRUE;
}
static GdkPixbuf *
thunar_icon_factory_get_thumbnail_frame (void)
{
GInputStream *stream;
static GdkPixbuf *frame = NULL;
if (G_LIKELY (frame != NULL))
return frame;
stream = g_resources_open_stream ("/org/xfce/thunar/thumbnail-frame.png", 0, NULL);
if (G_UNLIKELY (stream != NULL))
{
frame = gdk_pixbuf_new_from_stream (stream, NULL, NULL);
g_object_unref (stream);
}
return frame;
}
static GdkPixbuf *
thunar_icon_factory_load_from_file (ThunarIconFactory *factory,
const gchar *path,
gint size,
gint scale_factor)
{
GdkPixbuf *pixbuf;
GdkPixbuf *frame;
GdkPixbuf *tmp;
gboolean needs_frame;
gint max_width;
gint max_height;
gint width;
gint height;
gint scaled_size = size * scale_factor;
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), NULL);
/* try to load the image from the file */
pixbuf = gdk_pixbuf_new_from_file (path, NULL);
if (G_LIKELY (pixbuf != NULL))
{
/* determine the dimensions of the pixbuf */
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
needs_frame = FALSE;
if (factory->thumbnail_draw_frames)
{
/* check if we want to add a frame to the image */
needs_frame = (strstr (path, G_DIR_SEPARATOR_S ".cache/thumbnails" G_DIR_SEPARATOR_S) != NULL)
&& (size >= 32) && thumbnail_needs_frame (pixbuf, width, height, size);
}
/* be sure to make framed thumbnails fit into the size */
if (G_LIKELY (needs_frame))
{
max_width = scaled_size - (3 + 6);
max_height = scaled_size - (3 + 6);
}
else
{
max_width = scaled_size;
max_height = scaled_size;
}
/* scale down the icon (if required) */
if (G_LIKELY (width > max_width || height > max_height))
{
/* scale down to the required size */
tmp = exo_gdk_pixbuf_scale_down (pixbuf, TRUE, MAX (1, max_height), MAX (1, max_height));
g_object_unref (G_OBJECT (pixbuf));
pixbuf = tmp;
}
/* add a frame around thumbnail (large) images */
if (G_LIKELY (needs_frame))
{
/* add a frame to the thumbnail */
frame = thunar_icon_factory_get_thumbnail_frame ();
tmp = exo_gdk_pixbuf_frame (pixbuf, frame, 4, 3, 5, 6);
g_object_unref (G_OBJECT (pixbuf));
pixbuf = tmp;
}
}
return pixbuf;
}
static GdkPixbuf *
thunar_icon_factory_lookup_icon (ThunarIconFactory *factory,
const gchar *name,
gint size,
gint scale_factor,
gboolean wants_default,
gboolean symbolic,
GtkStyleContext *context)
{
ThunarIconKey lookup_key;
ThunarIconKey *key;
GtkIconInfo *icon_info;
GtkIconLookupFlags lookup_flags;
GdkRGBA color;
guint color_hash = 0;
GdkPixbuf *pixbuf = NULL;
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), NULL);
_thunar_return_val_if_fail (name != NULL && *name != '\0', NULL);
_thunar_return_val_if_fail (size > 0, NULL);
/* check if a symbolic icon that matches the theme is requested */
if (symbolic && context != NULL)
{
/* generate a hash value for the foreground color */
gtk_style_context_get_color (context, gtk_style_context_get_state (context), &color);
color_hash = gdk_rgba_hash (&color);
}
/* prepare the lookup key */
lookup_key.name = (gchar *) name;
lookup_key.size = size;
lookup_key.scale_factor = scale_factor;
lookup_key.symbolic = symbolic;
lookup_key.color_hash = color_hash;
/* check if we already have a cached version of the icon */
if (!g_hash_table_lookup_extended (factory->icon_cache, &lookup_key, NULL, (gpointer) &pixbuf))
{
/* check if we have to load a file instead of a themed icon */
if (G_UNLIKELY (g_path_is_absolute (name)))
{
/* load the file directly */
pixbuf = thunar_icon_factory_load_from_file (factory, name, size, scale_factor);
}
else
{
lookup_flags = GTK_ICON_LOOKUP_FORCE_SIZE;
if (symbolic)
lookup_flags |= GTK_ICON_LOOKUP_FORCE_SYMBOLIC;
/* check if the icon theme contains an icon of that name */
icon_info = gtk_icon_theme_lookup_icon_for_scale (factory->icon_theme, name, size,
scale_factor, lookup_flags);
if (G_LIKELY (icon_info != NULL))
{
if (symbolic && context != NULL)
{
/* try to load symbolic icon that matches the theme */
pixbuf = gtk_icon_info_load_symbolic_for_context (icon_info, context, NULL, NULL);
}
else
{
/* try to load the pixbuf from the icon info */
pixbuf = gtk_icon_info_load_icon (icon_info, NULL);
}
/* cleanup */
g_object_unref (icon_info);
}
}
/* use fallback icon if no pixbuf could be loaded */
if (G_UNLIKELY (pixbuf == NULL))
{
/* check if we are allowed to return the fallback icon */
if (!wants_default)
return NULL;
else
return thunar_icon_factory_load_fallback (factory, size, scale_factor, symbolic);
}
/* generate a key for the new cached icon */
key = g_slice_new (ThunarIconKey);
key->name = g_strdup (name);
key->size = size;
key->scale_factor = scale_factor;
key->symbolic = symbolic;
key->color_hash = color_hash;
/* insert the new icon into the cache */
g_hash_table_insert (factory->icon_cache, key, pixbuf);
}
/* schedule the sweeper */
if (G_UNLIKELY (factory->sweep_timer_id == 0))
{
factory->sweep_timer_id = g_timeout_add_seconds_full (G_PRIORITY_LOW, THUNAR_ICON_FACTORY_SWEEP_TIMEOUT,
thunar_icon_factory_sweep_timer, factory,
thunar_icon_factory_sweep_timer_destroy);
}
return GDK_PIXBUF (g_object_ref (G_OBJECT (pixbuf)));
}
static guint
thunar_icon_key_hash (gconstpointer data)
{
const ThunarIconKey *key = data;
const gchar *p;
guint h;
h = (guint) key->size << 5;
for (p = key->name; *p != '\0'; ++p)
h = (h << 5) - h + *p;
if (key->symbolic)
h ^= 1;
if (key->color_hash != 0)
h ^= key->color_hash;
return h;
}
static gboolean
thunar_icon_key_equal (gconstpointer a,
gconstpointer b)
{
const ThunarIconKey *a_key = a;
const ThunarIconKey *b_key = b;
/* compare sizes first */
if (a_key->size != b_key->size)
return FALSE;
if (a_key->scale_factor != b_key->scale_factor)
return FALSE;
if (a_key->symbolic != b_key->symbolic)
return FALSE;
if (a_key->color_hash != b_key->color_hash)
return FALSE;
/* do a full string comparison on the names */
return (g_strcmp0 (a_key->name, b_key->name) == 0);
}
static void
thunar_icon_key_free (gpointer data)
{
ThunarIconKey *key = data;
g_free (key->name);
g_slice_free (ThunarIconKey, key);
}
static void
thunar_icon_store_free (gpointer data)
{
ThunarIconStore *store = data;
if (store->icon != NULL)
g_object_unref (store->icon);
g_slice_free (ThunarIconStore, store);
}
static GdkPixbuf *
thunar_icon_factory_load_fallback (ThunarIconFactory *factory,
gint size,
gint scale_factor,
gboolean symbolic)
{
return thunar_icon_factory_lookup_icon (factory, "text-x-generic", size, scale_factor, FALSE, symbolic, NULL);
}
/**
* thunar_icon_factory_get_default:
*
* Returns the #ThunarIconFactory that operates on the default #GtkIconTheme.
* The default #ThunarIconFactory instance will be around for the time the
* programs runs, starting with the first call to this function.
*
* The caller is responsible to free the returned object using
* g_object_unref() when no longer needed.
*
* Return value: the #ThunarIconFactory for the default icon theme.
**/
ThunarIconFactory *
thunar_icon_factory_get_default (void)
{
static ThunarIconFactory *factory = NULL;
if (G_UNLIKELY (factory == NULL))
{
factory = thunar_icon_factory_get_for_icon_theme (gtk_icon_theme_get_default ());
g_object_add_weak_pointer (G_OBJECT (factory), (gpointer) &factory);
}
else
{
g_object_ref (G_OBJECT (factory));
}
return factory;
}
/**
* thunar_icon_factory_get_for_icon_theme:
* @icon_theme : a #GtkIconTheme instance.
*
* Determines the proper #ThunarIconFactory to be used with the specified
* @icon_theme and returns it.
*
* You need to explicitly free the returned #ThunarIconFactory object
* using g_object_unref() when you are done with it.
*
* Return value: the #ThunarIconFactory for @icon_theme.
**/
ThunarIconFactory *
thunar_icon_factory_get_for_icon_theme (GtkIconTheme *icon_theme)
{
ThunarIconFactory *factory;
_thunar_return_val_if_fail (GTK_IS_ICON_THEME (icon_theme), NULL);
/* generate the quark on-demand */
if (G_UNLIKELY (thunar_icon_factory_quark == 0))
thunar_icon_factory_quark = g_quark_from_static_string ("thunar-icon-factory");
/* check if the given icon theme already knows about an icon factory */
factory = g_object_get_qdata (G_OBJECT (icon_theme), thunar_icon_factory_quark);
if (G_UNLIKELY (factory == NULL))
{
/* allocate a new factory and connect it to the icon theme */
factory = g_object_new (THUNAR_TYPE_ICON_FACTORY, NULL);
factory->icon_theme = GTK_ICON_THEME (g_object_ref (G_OBJECT (icon_theme)));
g_object_set_qdata (G_OBJECT (factory->icon_theme), thunar_icon_factory_quark, factory);
/* connect the properties of the global preference */
factory->preferences = thunar_preferences_get ();
g_object_bind_property (G_OBJECT (factory->preferences), "misc-thumbnail-mode",
G_OBJECT (factory), "thumbnail-mode",
G_BINDING_SYNC_CREATE);
g_object_bind_property (G_OBJECT (factory->preferences), "misc-thumbnail-max-file-size",
G_OBJECT (factory), "thumbnail-max-file-size",
G_BINDING_SYNC_CREATE);
}
else
{
g_object_ref (G_OBJECT (factory));
}
return factory;
}
/**
* thunar_icon_factory_get_show_thumbnail:
* @factory : a #ThunarIconFactory instance.
* @file : a #ThunarFile.
*
* Return value: if a Thumbnail show be shown for @file.
**/
gboolean
thunar_icon_factory_get_show_thumbnail (const ThunarIconFactory *factory,
const ThunarFile *file)
{
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), THUNAR_THUMBNAIL_MODE_NEVER);
_thunar_return_val_if_fail (file == NULL || THUNAR_IS_FILE (file), THUNAR_THUMBNAIL_MODE_NEVER);
if (file == NULL || factory->thumbnail_mode == THUNAR_THUMBNAIL_MODE_NEVER)
return FALSE;
/*
* Note: We ignore 'G_FILE_ATTRIBUTE_FILESYSTEM_USE_PREVIEW' on purpose,
* since following the glib suggestion would lead to having no thumbnails at all for mtp and gphoto2 devices.
* Instead, settings 'THUNAR_THUMBNAIL_MODE_ALWAYS' will indeed always show thumbnails.
*/
if (factory->thumbnail_mode == THUNAR_THUMBNAIL_MODE_ALWAYS)
return TRUE;
if (factory->thumbnail_mode == THUNAR_THUMBNAIL_MODE_ONLY_LOCAL && thunar_file_is_local (file))
return TRUE;
return FALSE;
}
/**
* thunar_icon_factory_load_icon:
* @factory : a #ThunarIconFactory instance.
* @name : name of the icon to load.
* @size : desired icon size.
* @scale_factor : the UI scale factor.
* @wants_default : %TRUE to return the fallback icon if no icon of @name
* is found in the @factory.
* @symbolic : %TRUE to request a symbolic icon if possible.
* @context : a #GtkStyleContext instance, can be %NULL.
*
* Looks up the icon named @name in the icon theme associated with @factory
* and returns a pixbuf for the icon at the given @size. This function will
* return a default fallback icon if the requested icon could not be found
* and @wants_default is %TRUE, else %NULL will be returned in that case.
*
* If @symbolic is %TRUE, try to load a symbolic icon that optionally
* matches the system colors provided by @context.
*
* Call g_object_unref() on the returned pixbuf when you are
* done with it.
*
* Return value: the pixbuf for the icon named @name at @size.
**/
GdkPixbuf *
thunar_icon_factory_load_icon (ThunarIconFactory *factory,
const gchar *name,
gint size,
gint scale_factor,
gboolean wants_default,
gboolean symbolic,
GtkStyleContext *context)
{
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), NULL);
_thunar_return_val_if_fail (size > 0, NULL);
/* cannot happen unless there's no XSETTINGS manager
* for the default screen, but just in case...
*/
if (G_UNLIKELY (xfce_str_is_empty (name)))
{
/* check if the caller will happly accept the fallback icon */
if (G_LIKELY (wants_default))
return thunar_icon_factory_load_fallback (factory, size, scale_factor, symbolic);
else
return NULL;
}
/* lookup the icon */
return thunar_icon_factory_lookup_icon (factory, name, size, scale_factor, wants_default, symbolic, context);
}
/**
* thunar_icon_factory_load_file_icon:
* @factory : a #ThunarIconFactory instance.
* @file : a #ThunarFile.
* @icon_state : the desired icon state.
* @icon_size : the desired icon size.
* @scale_factor : the UI scale factor.
* @symbolic : load the symbolic version of the icon.
* @context : a #GtkStyleContext instance, can be %NULL.
*
* If @symbolic is %TRUE, try to load a symbolic icon that optionally
* matches the system colors provided by @context.
*
* The caller is responsible to free the returned object using
* g_object_unref() when no longer needed.
*
* Return value: the #GdkPixbuf icon.
**/
GdkPixbuf *
thunar_icon_factory_load_file_icon (ThunarIconFactory *factory,
ThunarFile *file,
ThunarFileIconState icon_state,
gint icon_size,
gint scale_factor,
gboolean symbolic,
GtkStyleContext *context)
{
GInputStream *stream;
GtkIconInfo *icon_info;
const gchar *thumbnail_path;
GdkPixbuf *icon = NULL;
GIcon *gicon;
const gchar *icon_name;
const gchar *custom_icon;
ThunarIconStore *store;
_thunar_return_val_if_fail (THUNAR_IS_ICON_FACTORY (factory), NULL);
_thunar_return_val_if_fail (THUNAR_IS_FILE (file), NULL);
_thunar_return_val_if_fail (icon_size > 0, NULL);
/* check if we have a stored icon on the file and it is still valid */
store = g_object_get_qdata (G_OBJECT (file), thunar_icon_factory_store_quark);
if (store != NULL
&& store->icon_state == icon_state
&& store->icon_size == icon_size
&& store->stamp == factory->theme_stamp
&& store->thumbnail_draw_frames == factory->thumbnail_draw_frames
&& store->thumb_state == thunar_file_get_thumb_state (file, thunar_icon_size_to_thumbnail_size (icon_size * scale_factor))
&& store->symbolic == symbolic)
{
return g_object_ref (store->icon);
}
/* check if we have a custom icon for this file */
custom_icon = thunar_file_get_custom_icon (file);
if (custom_icon != NULL)
{
/* try to load the icon */
icon = thunar_icon_factory_lookup_icon (factory, custom_icon, icon_size, scale_factor,
FALSE, symbolic, context);
if (G_LIKELY (icon != NULL))
return icon;
}
/* check if thumbnails are enabled and we can display a thumbnail for the item */
if (thunar_icon_factory_get_show_thumbnail (factory, file))
{
/* determine the preview icon first */
gicon = thunar_file_get_preview_icon (file);
/* check if we have a preview icon */
if (gicon != NULL)
{
if (G_IS_THEMED_ICON (gicon))
{
/* we have a themed preview icon, look it up using the icon theme */
icon_info =
gtk_icon_theme_lookup_by_gicon_for_scale (factory->icon_theme,
gicon,
icon_size,
scale_factor,
GTK_ICON_LOOKUP_USE_BUILTIN
| GTK_ICON_LOOKUP_FORCE_SIZE);
/* check if the lookup succeeded */
if (icon_info != NULL)
{
/* try to load the pixbuf from the icon info */
icon = gtk_icon_info_load_icon (icon_info, NULL);
g_object_unref (icon_info);
}
}
else if (G_IS_LOADABLE_ICON (gicon))
{
/* we have a loadable icon, try to open it for reading */
stream = g_loadable_icon_load (G_LOADABLE_ICON (gicon), icon_size,
NULL, NULL, NULL);
/* check if we have a valid input stream */
if (stream != NULL)
{
/* load the pixbuf from the stream */
icon = gdk_pixbuf_new_from_stream_at_scale (stream,
icon_size * scale_factor,
icon_size * scale_factor, TRUE,
NULL, NULL);
/* destroy the stream */
g_object_unref (stream);
}
}
/* return the icon if we have one */
if (icon != NULL)
return icon;
}
else
{
if (thunar_file_get_size (file) < factory->thumbnail_max_file_size || factory->thumbnail_max_file_size == 0) /* 0 = unlimited */
{
/* we have no preview icon but the thumbnail should be ready. determine
* the filename of the thumbnail */
thumbnail_path = thunar_file_get_thumbnail_path (file, thunar_icon_size_to_thumbnail_size (icon_size * scale_factor));
/* check if we have a valid path */
if (thumbnail_path != NULL)
/* try to load the thumbnail */
icon = thunar_icon_factory_load_from_file (factory, thumbnail_path, icon_size, scale_factor);
}
}
}
/* lookup the icon name for the icon in the given state and load the icon */
if (G_LIKELY (icon == NULL))
{
icon_name = thunar_file_get_icon_name (file, icon_state, factory->icon_theme);
icon = thunar_icon_factory_load_icon (factory, icon_name, icon_size, scale_factor,
TRUE, symbolic, context);
}
/* skip icon store */
if (symbolic && context != NULL)
return icon;
if (G_LIKELY (icon != NULL))
{
store = g_slice_new (ThunarIconStore);
store->icon_size = icon_size;
store->icon_state = icon_state;
store->stamp = factory->theme_stamp;
store->thumbnail_draw_frames = factory->thumbnail_draw_frames;
store->thumb_state = thunar_file_get_thumb_state (file, thunar_icon_size_to_thumbnail_size (icon_size * scale_factor));
store->symbolic = symbolic;
store->icon = g_object_ref (icon);
g_object_set_qdata_full (G_OBJECT (file), thunar_icon_factory_store_quark,
store, thunar_icon_store_free);
}
return icon;
}
/**
* thunar_icon_factory_clear_pixmap_cache:
* @file : a #ThunarFile.
*
* Unset the pixmap cache on a file to force a reload on the next request.
**/
void
thunar_icon_factory_clear_pixmap_cache (ThunarFile *file)
{
_thunar_return_if_fail (THUNAR_IS_FILE (file));
/* unset the data */
if (thunar_icon_factory_store_quark != 0)
g_object_set_qdata (G_OBJECT (file), thunar_icon_factory_store_quark, NULL);
}
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