forked from AuroraMiddleware/gtk
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
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/*
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* Copyright © 2015 Endless Mobile, Inc.
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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 2.1 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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* Authors: Cosimo Cecchi <cosimoc@gnome.org>
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*/
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#include "config.h"
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#include "gtkcssnodeprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkiconprivate.h"
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#include "gtkwidgetprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtksnapshot.h"
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/* GtkIcon was a minimal widget wrapped around a GtkBuiltinIcon gadget,
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* It should be used whenever builtin-icon functionality is desired
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* but a widget is needed for other reasons.
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*/
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struct _GtkIcon
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{
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GtkWidget parent;
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};
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G_DEFINE_TYPE (GtkIcon, gtk_icon, GTK_TYPE_WIDGET)
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static void
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gtk_icon_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot)
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{
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GtkCssStyle *style = gtk_css_node_get_style (gtk_widget_get_css_node (widget));
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int width, height;
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width = gtk_widget_get_width (widget);
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height = gtk_widget_get_height (widget);
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if (width > 0 && height > 0)
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gtk_css_style_snapshot_icon (style, snapshot, width, height);
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}
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static void
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gtk_icon_style_updated (GtkWidget *widget)
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{
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GtkStyleContext *context;
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GtkCssStyleChange *change = NULL;
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context = gtk_widget_get_style_context (widget);
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change = gtk_style_context_get_change (context);
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GTK_WIDGET_CLASS (gtk_icon_parent_class)->style_updated (widget);
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if (change == NULL ||
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gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_ICON_SIZE))
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{
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gtk_widget_queue_resize (widget);
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}
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else if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_ICON_TEXTURE) ||
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gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_ICON_REDRAW))
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{
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gtk_widget_queue_draw (widget);
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}
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}
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static void
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gtk_icon_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkCssValue *icon_size;
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icon_size = _gtk_style_context_peek_property (gtk_widget_get_style_context (widget), GTK_CSS_PROPERTY_ICON_SIZE);
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*minimum = *natural = _gtk_css_number_value_get (icon_size, 100);
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}
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static void
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gtk_icon_class_init (GtkIconClass *klass)
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{
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GtkWidgetClass *wclass = GTK_WIDGET_CLASS (klass);
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wclass->snapshot = gtk_icon_snapshot;
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wclass->measure = gtk_icon_measure;
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wclass->style_updated = gtk_icon_style_updated;
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}
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static void
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gtk_icon_init (GtkIcon *self)
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{
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}
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GtkWidget *
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gtk_icon_new (const char *css_name)
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{
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return g_object_new (GTK_TYPE_ICON,
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"css-name", css_name,
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NULL);
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}
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void
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gtk_icon_set_css_name (GtkIcon *self,
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const char *css_name)
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{
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gtk_css_node_set_name (gtk_widget_get_css_node (GTK_WIDGET (self)),
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g_intern_string (css_name));
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}
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