620 lines
15 KiB
C
620 lines
15 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* Authors: Cosimo Cecchi <cosimoc@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkiconhelperprivate.h"
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G_DEFINE_TYPE (GtkIconHelper, _gtk_icon_helper, G_TYPE_OBJECT)
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struct _GtkIconHelperPrivate {
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GtkImageType storage_type;
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GdkPixbuf *orig_pixbuf;
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GdkPixbufAnimation *animation;
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GIcon *gicon;
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GtkIconSet *icon_set;
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gchar *icon_name;
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gchar *stock_id;
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GtkIconSize icon_size;
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gint pixel_size;
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guint use_fallback : 1;
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guint force_scale_pixbuf : 1;
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GdkPixbuf *rendered_pixbuf;
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GtkStateFlags last_rendered_state;
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};
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void
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_gtk_icon_helper_clear (GtkIconHelper *self)
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{
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g_clear_object (&self->priv->gicon);
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g_clear_object (&self->priv->orig_pixbuf);
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g_clear_object (&self->priv->animation);
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g_clear_object (&self->priv->rendered_pixbuf);
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if (self->priv->icon_set != NULL)
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{
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gtk_icon_set_unref (self->priv->icon_set);
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self->priv->icon_set = NULL;
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}
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g_free (self->priv->icon_name);
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self->priv->icon_name = NULL;
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g_free (self->priv->stock_id);
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self->priv->stock_id = NULL;
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self->priv->storage_type = GTK_IMAGE_EMPTY;
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self->priv->icon_size = GTK_ICON_SIZE_INVALID;
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self->priv->last_rendered_state = GTK_STATE_FLAG_NORMAL;
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}
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void
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_gtk_icon_helper_invalidate (GtkIconHelper *self)
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{
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g_clear_object (&self->priv->rendered_pixbuf);
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}
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static void
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gtk_icon_helper_finalize (GObject *object)
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{
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GtkIconHelper *self = GTK_ICON_HELPER (object);
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_gtk_icon_helper_clear (self);
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G_OBJECT_CLASS (_gtk_icon_helper_parent_class)->finalize (object);
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}
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static void
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_gtk_icon_helper_class_init (GtkIconHelperClass *klass)
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{
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GObjectClass *oclass;
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oclass = G_OBJECT_CLASS (klass);
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oclass->finalize = gtk_icon_helper_finalize;
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g_type_class_add_private (klass, sizeof (GtkIconHelperPrivate));
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}
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static void
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_gtk_icon_helper_init (GtkIconHelper *self)
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{
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self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GTK_TYPE_ICON_HELPER, GtkIconHelperPrivate);
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self->priv->storage_type = GTK_IMAGE_EMPTY;
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self->priv->icon_size = GTK_ICON_SIZE_INVALID;
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self->priv->pixel_size = -1;
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self->priv->last_rendered_state = GTK_STATE_FLAG_NORMAL;
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}
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static void
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ensure_icon_size (GtkIconHelper *self,
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GtkStyleContext *context,
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gint *width_out,
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gint *height_out)
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{
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gint width, height;
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GtkSettings *settings;
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GdkScreen *screen;
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screen = gtk_style_context_get_screen (context);
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settings = gtk_settings_get_for_screen (screen);
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if (self->priv->pixel_size != -1)
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{
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width = height = self->priv->pixel_size;
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}
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else if (!gtk_icon_size_lookup_for_settings (settings,
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self->priv->icon_size,
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&width, &height))
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{
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if (self->priv->icon_size == GTK_ICON_SIZE_INVALID)
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{
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width = height = 0;
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}
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else
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{
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g_warning ("Invalid icon size %d\n", self->priv->icon_size);
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width = height = 24;
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}
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}
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*width_out = width;
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*height_out = height;
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}
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static GdkPixbuf *
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ensure_stated_icon_from_info (GtkIconHelper *self,
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GtkStyleContext *context,
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GtkIconInfo *info)
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{
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GdkPixbuf *destination = NULL;
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gboolean symbolic;
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symbolic = FALSE;
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if (info)
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destination =
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gtk_icon_info_load_symbolic_for_context (info,
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context,
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&symbolic,
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NULL);
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if (destination == NULL)
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{
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GtkIconSet *icon_set;
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icon_set = gtk_style_context_lookup_icon_set (context, GTK_STOCK_MISSING_IMAGE);
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destination =
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gtk_icon_set_render_icon_pixbuf (icon_set, context, self->priv->icon_size);
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}
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else if (!symbolic)
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{
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GtkIconSource *source;
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GdkPixbuf *rendered;
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source = gtk_icon_source_new ();
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gtk_icon_source_set_pixbuf (source, destination);
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/* The size here is arbitrary; since size isn't
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* wildcarded in the source, it isn't supposed to be
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* scaled by the engine function
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*/
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gtk_icon_source_set_size (source,
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GTK_ICON_SIZE_SMALL_TOOLBAR);
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gtk_icon_source_set_size_wildcarded (source, FALSE);
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rendered = gtk_render_icon_pixbuf (context, source, (GtkIconSize) -1);
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gtk_icon_source_free (source);
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g_object_unref (destination);
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destination = rendered;
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}
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return destination;
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}
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static gboolean
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check_invalidate_pixbuf (GtkIconHelper *self,
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GtkStyleContext *context)
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{
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GtkStateFlags state;
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state = gtk_style_context_get_state (context);
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if ((self->priv->rendered_pixbuf != NULL) &&
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(self->priv->last_rendered_state == state))
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return FALSE;
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self->priv->last_rendered_state = state;
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g_clear_object (&self->priv->rendered_pixbuf);
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return TRUE;
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}
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static GtkIconLookupFlags
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get_icon_lookup_flags (GtkIconHelper *self)
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{
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GtkIconLookupFlags flags = GTK_ICON_LOOKUP_USE_BUILTIN;
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if (self->priv->use_fallback)
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flags |= GTK_ICON_LOOKUP_GENERIC_FALLBACK;
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if (self->priv->pixel_size != -1)
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flags |= GTK_ICON_LOOKUP_FORCE_SIZE;
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return flags;
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}
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static void
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ensure_pixbuf_for_icon_name_or_gicon (GtkIconHelper *self,
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GtkStyleContext *context)
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{
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GtkIconTheme *icon_theme;
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gint width, height;
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GtkIconInfo *info;
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GtkIconLookupFlags flags;
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if (!check_invalidate_pixbuf (self, context))
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return;
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icon_theme = gtk_icon_theme_get_default ();
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flags = get_icon_lookup_flags (self);
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ensure_icon_size (self, context, &width, &height);
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if (self->priv->storage_type == GTK_IMAGE_ICON_NAME &&
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self->priv->icon_name != NULL)
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{
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info = gtk_icon_theme_lookup_icon (icon_theme,
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self->priv->icon_name,
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MIN (width, height), flags);
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}
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else if (self->priv->storage_type == GTK_IMAGE_GICON &&
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self->priv->gicon != NULL)
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{
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info = gtk_icon_theme_lookup_by_gicon (icon_theme,
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self->priv->gicon,
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MIN (width, height), flags);
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}
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else
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{
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g_assert_not_reached ();
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return;
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}
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self->priv->rendered_pixbuf = ensure_stated_icon_from_info (self, context, info);
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if (info)
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g_object_unref (info);
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}
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static void
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ensure_pixbuf_for_icon_set (GtkIconHelper *self,
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GtkStyleContext *context,
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GtkIconSet *icon_set)
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{
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if (!check_invalidate_pixbuf (self, context))
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return;
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self->priv->rendered_pixbuf =
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gtk_icon_set_render_icon_pixbuf (icon_set, context, self->priv->icon_size);
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}
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static void
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ensure_pixbuf_at_size (GtkIconHelper *self,
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GtkStyleContext *context)
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{
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gint width, height;
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if (!check_invalidate_pixbuf (self, context))
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return;
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if (self->priv->rendered_pixbuf)
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return;
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if (self->priv->pixel_size != -1 ||
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self->priv->icon_size != GTK_ICON_SIZE_INVALID)
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{
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ensure_icon_size (self, context, &width, &height);
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if (width < gdk_pixbuf_get_width (self->priv->orig_pixbuf) ||
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height < gdk_pixbuf_get_height (self->priv->orig_pixbuf))
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self->priv->rendered_pixbuf =
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gdk_pixbuf_scale_simple (self->priv->orig_pixbuf,
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width, height,
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GDK_INTERP_BILINEAR);
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}
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if (!self->priv->rendered_pixbuf)
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self->priv->rendered_pixbuf = g_object_ref (self->priv->orig_pixbuf);
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}
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GdkPixbuf *
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_gtk_icon_helper_ensure_pixbuf (GtkIconHelper *self,
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GtkStyleContext *context)
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{
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GdkPixbuf *pixbuf = NULL;
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GtkIconSet *icon_set;
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switch (self->priv->storage_type)
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{
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case GTK_IMAGE_PIXBUF:
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if (self->priv->force_scale_pixbuf)
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ensure_pixbuf_at_size (self, context);
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else
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pixbuf = g_object_ref (self->priv->orig_pixbuf);
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break;
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case GTK_IMAGE_STOCK:
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icon_set = gtk_style_context_lookup_icon_set (context, self->priv->stock_id);
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if (icon_set != NULL)
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ensure_pixbuf_for_icon_set (self, context, icon_set);
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else
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pixbuf = NULL;
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break;
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case GTK_IMAGE_ICON_SET:
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icon_set = self->priv->icon_set;
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ensure_pixbuf_for_icon_set (self, context, icon_set);
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break;
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case GTK_IMAGE_ICON_NAME:
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case GTK_IMAGE_GICON:
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ensure_pixbuf_for_icon_name_or_gicon (self, context);
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break;
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case GTK_IMAGE_ANIMATION:
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case GTK_IMAGE_EMPTY:
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default:
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pixbuf = NULL;
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break;
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}
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if (pixbuf == NULL &&
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self->priv->rendered_pixbuf != NULL)
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pixbuf = g_object_ref (self->priv->rendered_pixbuf);
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return pixbuf;
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}
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void
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_gtk_icon_helper_get_size (GtkIconHelper *self,
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GtkStyleContext *context,
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gint *width_out,
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gint *height_out)
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{
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GdkPixbuf *pix;
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gint width, height;
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width = height = 0;
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pix = _gtk_icon_helper_ensure_pixbuf (self, context);
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if (pix != NULL)
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{
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width = gdk_pixbuf_get_width (pix);
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height = gdk_pixbuf_get_height (pix);
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g_object_unref (pix);
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}
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else if (self->priv->storage_type == GTK_IMAGE_ANIMATION)
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{
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width = gdk_pixbuf_animation_get_width (self->priv->animation);
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height = gdk_pixbuf_animation_get_height (self->priv->animation);
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}
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else if (self->priv->icon_size != -1)
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{
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ensure_icon_size (self, context, &width, &height);
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}
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if (width_out)
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*width_out = width;
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if (height_out)
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*height_out = height;
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}
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void
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_gtk_icon_helper_set_gicon (GtkIconHelper *self,
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GIcon *gicon,
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GtkIconSize icon_size)
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{
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_gtk_icon_helper_clear (self);
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if (gicon != NULL)
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{
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self->priv->storage_type = GTK_IMAGE_GICON;
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self->priv->gicon = g_object_ref (gicon);
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_gtk_icon_helper_set_icon_size (self, icon_size);
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}
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}
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void
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_gtk_icon_helper_set_icon_name (GtkIconHelper *self,
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const gchar *icon_name,
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GtkIconSize icon_size)
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{
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_gtk_icon_helper_clear (self);
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if (icon_name != NULL &&
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icon_name[0] != '\0')
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{
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self->priv->storage_type = GTK_IMAGE_ICON_NAME;
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self->priv->icon_name = g_strdup (icon_name);
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_gtk_icon_helper_set_icon_size (self, icon_size);
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}
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}
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void
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_gtk_icon_helper_set_icon_set (GtkIconHelper *self,
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GtkIconSet *icon_set,
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GtkIconSize icon_size)
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{
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_gtk_icon_helper_clear (self);
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if (icon_set != NULL)
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{
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self->priv->storage_type = GTK_IMAGE_ICON_SET;
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self->priv->icon_set = gtk_icon_set_ref (icon_set);
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_gtk_icon_helper_set_icon_size (self, icon_size);
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}
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}
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void
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_gtk_icon_helper_set_pixbuf (GtkIconHelper *self,
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GdkPixbuf *pixbuf)
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{
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_gtk_icon_helper_clear (self);
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if (pixbuf != NULL)
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{
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self->priv->storage_type = GTK_IMAGE_PIXBUF;
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self->priv->orig_pixbuf = g_object_ref (pixbuf);
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}
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}
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void
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_gtk_icon_helper_set_animation (GtkIconHelper *self,
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GdkPixbufAnimation *animation)
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{
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_gtk_icon_helper_clear (self);
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if (animation != NULL)
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{
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self->priv->storage_type = GTK_IMAGE_ANIMATION;
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self->priv->animation = g_object_ref (animation);
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}
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}
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void
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_gtk_icon_helper_set_stock_id (GtkIconHelper *self,
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const gchar *stock_id,
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GtkIconSize icon_size)
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{
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_gtk_icon_helper_clear (self);
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if (stock_id != NULL &&
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stock_id[0] != '\0')
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{
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self->priv->storage_type = GTK_IMAGE_STOCK;
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self->priv->stock_id = g_strdup (stock_id);
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_gtk_icon_helper_set_icon_size (self, icon_size);
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}
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}
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void
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_gtk_icon_helper_set_icon_size (GtkIconHelper *self,
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GtkIconSize icon_size)
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{
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if (self->priv->icon_size != icon_size)
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{
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self->priv->icon_size = icon_size;
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_gtk_icon_helper_invalidate (self);
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}
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}
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void
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_gtk_icon_helper_set_pixel_size (GtkIconHelper *self,
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gint pixel_size)
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{
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if (self->priv->pixel_size != pixel_size)
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{
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self->priv->pixel_size = pixel_size;
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_gtk_icon_helper_invalidate (self);
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}
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}
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void
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_gtk_icon_helper_set_use_fallback (GtkIconHelper *self,
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gboolean use_fallback)
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{
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if (self->priv->use_fallback != use_fallback)
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{
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self->priv->use_fallback = use_fallback;
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_gtk_icon_helper_invalidate (self);
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}
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}
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GtkImageType
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_gtk_icon_helper_get_storage_type (GtkIconHelper *self)
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{
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return self->priv->storage_type;
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}
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gboolean
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_gtk_icon_helper_get_use_fallback (GtkIconHelper *self)
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{
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return self->priv->use_fallback;
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}
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GtkIconSize
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_gtk_icon_helper_get_icon_size (GtkIconHelper *self)
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{
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return self->priv->icon_size;
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}
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gint
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_gtk_icon_helper_get_pixel_size (GtkIconHelper *self)
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{
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return self->priv->pixel_size;
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}
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GdkPixbuf *
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_gtk_icon_helper_peek_pixbuf (GtkIconHelper *self)
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{
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return self->priv->orig_pixbuf;
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}
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GIcon *
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_gtk_icon_helper_peek_gicon (GtkIconHelper *self)
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{
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return self->priv->gicon;
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}
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GdkPixbufAnimation *
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_gtk_icon_helper_peek_animation (GtkIconHelper *self)
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{
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return self->priv->animation;
|
|
}
|
|
|
|
GtkIconSet *
|
|
_gtk_icon_helper_peek_icon_set (GtkIconHelper *self)
|
|
{
|
|
return self->priv->icon_set;
|
|
}
|
|
|
|
const gchar *
|
|
_gtk_icon_helper_get_stock_id (GtkIconHelper *self)
|
|
{
|
|
return self->priv->stock_id;
|
|
}
|
|
|
|
const gchar *
|
|
_gtk_icon_helper_get_icon_name (GtkIconHelper *self)
|
|
{
|
|
return self->priv->icon_name;
|
|
}
|
|
|
|
GtkIconHelper *
|
|
_gtk_icon_helper_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_ICON_HELPER, NULL);
|
|
}
|
|
|
|
void
|
|
_gtk_icon_helper_draw (GtkIconHelper *self,
|
|
GtkStyleContext *context,
|
|
cairo_t *cr,
|
|
gdouble x,
|
|
gdouble y)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
|
|
pixbuf = _gtk_icon_helper_ensure_pixbuf (self, context);
|
|
|
|
if (pixbuf != NULL)
|
|
{
|
|
gtk_render_icon (context, cr, pixbuf, x, y);
|
|
g_object_unref (pixbuf);
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
_gtk_icon_helper_get_is_empty (GtkIconHelper *self)
|
|
{
|
|
return (self->priv->storage_type == GTK_IMAGE_EMPTY);
|
|
}
|
|
|
|
gboolean
|
|
_gtk_icon_helper_get_force_scale_pixbuf (GtkIconHelper *self)
|
|
{
|
|
return self->priv->force_scale_pixbuf;
|
|
}
|
|
|
|
void
|
|
_gtk_icon_helper_set_force_scale_pixbuf (GtkIconHelper *self,
|
|
gboolean force_scale)
|
|
{
|
|
if (self->priv->force_scale_pixbuf != force_scale)
|
|
{
|
|
self->priv->force_scale_pixbuf = force_scale;
|
|
_gtk_icon_helper_invalidate (self);
|
|
}
|
|
}
|