331 lines
11 KiB
C
331 lines
11 KiB
C
/* gtkcellrendererpixbuf.c
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* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include "gtkcellrendererpixbuf.h"
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#include "gtkintl.h"
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static void gtk_cell_renderer_pixbuf_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_cell_renderer_pixbuf_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *celltext);
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static void gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class);
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static void gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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GdkRectangle *rectangle,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height);
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static void gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell,
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GdkWindow *window,
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GtkWidget *widget,
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GdkRectangle *background_area,
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GdkRectangle *cell_area,
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GdkRectangle *expose_area,
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guint flags);
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enum {
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PROP_ZERO,
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PROP_PIXBUF,
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PROP_PIXBUF_EXPANDER_OPEN,
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PROP_PIXBUF_EXPANDER_CLOSED
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};
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GtkType
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gtk_cell_renderer_pixbuf_get_type (void)
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{
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static GtkType cell_pixbuf_type = 0;
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if (!cell_pixbuf_type)
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{
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static const GTypeInfo cell_pixbuf_info =
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{
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sizeof (GtkCellRendererPixbufClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gtk_cell_renderer_pixbuf_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkCellRendererPixbuf),
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0, /* n_preallocs */
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(GInstanceInitFunc) gtk_cell_renderer_pixbuf_init,
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};
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cell_pixbuf_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererPixbuf", &cell_pixbuf_info, 0);
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}
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return cell_pixbuf_type;
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}
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static void
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gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *cellpixbuf)
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{
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}
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static void
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gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
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object_class->get_property = gtk_cell_renderer_pixbuf_get_property;
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object_class->set_property = gtk_cell_renderer_pixbuf_set_property;
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cell_class->get_size = gtk_cell_renderer_pixbuf_get_size;
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cell_class->render = gtk_cell_renderer_pixbuf_render;
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g_object_class_install_property (object_class,
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PROP_PIXBUF,
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g_param_spec_object ("pixbuf",
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_("Pixbuf Object"),
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_("The pixbuf to render."),
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GDK_TYPE_PIXBUF,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE));
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g_object_class_install_property (object_class,
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PROP_PIXBUF_EXPANDER_OPEN,
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g_param_spec_object ("pixbuf_expander_open",
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_("Pixbuf Expander Open"),
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_("Pixbuf for open expander."),
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GDK_TYPE_PIXBUF,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE));
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g_object_class_install_property (object_class,
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PROP_PIXBUF_EXPANDER_CLOSED,
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g_param_spec_object ("pixbuf_expander_closed",
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_("Pixbuf Expander Closed"),
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_("Pixbuf for closed expander."),
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GDK_TYPE_PIXBUF,
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G_PARAM_READABLE |
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G_PARAM_WRITABLE));
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}
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static void
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gtk_cell_renderer_pixbuf_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
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switch (param_id)
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{
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case PROP_PIXBUF:
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g_value_set_object (value,
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cellpixbuf->pixbuf ? G_OBJECT (cellpixbuf->pixbuf) : NULL);
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break;
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case PROP_PIXBUF_EXPANDER_OPEN:
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g_value_set_object (value,
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cellpixbuf->pixbuf_expander_open ? G_OBJECT (cellpixbuf->pixbuf_expander_open) : NULL);
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break;
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case PROP_PIXBUF_EXPANDER_CLOSED:
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g_value_set_object (value,
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cellpixbuf->pixbuf_expander_closed ? G_OBJECT (cellpixbuf->pixbuf_expander_closed) : NULL);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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gtk_cell_renderer_pixbuf_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GdkPixbuf *pixbuf;
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GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
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switch (param_id)
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{
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case PROP_PIXBUF:
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pixbuf = (GdkPixbuf*) g_value_get_object (value);
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if (pixbuf)
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g_object_ref (G_OBJECT (pixbuf));
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if (cellpixbuf->pixbuf)
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g_object_unref (G_OBJECT (cellpixbuf->pixbuf));
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cellpixbuf->pixbuf = pixbuf;
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break;
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case PROP_PIXBUF_EXPANDER_OPEN:
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pixbuf = (GdkPixbuf*) g_value_get_object (value);
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if (pixbuf)
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g_object_ref (G_OBJECT (pixbuf));
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if (cellpixbuf->pixbuf_expander_open)
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g_object_unref (G_OBJECT (cellpixbuf->pixbuf_expander_open));
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cellpixbuf->pixbuf_expander_open = pixbuf;
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break;
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case PROP_PIXBUF_EXPANDER_CLOSED:
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pixbuf = (GdkPixbuf*) g_value_get_object (value);
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if (pixbuf)
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g_object_ref (G_OBJECT (pixbuf));
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if (cellpixbuf->pixbuf_expander_closed)
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g_object_unref (G_OBJECT (cellpixbuf->pixbuf_expander_closed));
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cellpixbuf->pixbuf_expander_closed = pixbuf;
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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/**
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* gtk_cell_renderer_pixbuf_new:
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*
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* Creates a new #GtkCellRendererPixbuf. Adjust rendering
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* parameters using object properties. Object properties can be set
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* globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
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* can bind a property to a value in a #GtkTreeModel. For example, you
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* can bind the "pixbuf" property on the cell renderer to a pixbuf value
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* in the model, thus rendering a different image in each row of the
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* #GtkTreeView.
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*
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* Return value: the new cell renderer
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**/
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GtkCellRenderer *
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gtk_cell_renderer_pixbuf_new (void)
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{
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return GTK_CELL_RENDERER (gtk_type_new (gtk_cell_renderer_pixbuf_get_type ()));
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}
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static void
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gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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GdkRectangle *cell_area,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height)
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{
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GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
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gint pixbuf_width = 0;
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gint pixbuf_height = 0;
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gint calc_width;
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gint calc_height;
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if (cellpixbuf->pixbuf)
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{
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pixbuf_width = gdk_pixbuf_get_width (cellpixbuf->pixbuf);
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pixbuf_height = gdk_pixbuf_get_height (cellpixbuf->pixbuf);
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}
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if (cellpixbuf->pixbuf_expander_open)
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{
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pixbuf_width = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_open));
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pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_open));
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}
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if (cellpixbuf->pixbuf_expander_closed)
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{
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pixbuf_width = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_closed));
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pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_closed));
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}
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calc_width = (gint) GTK_CELL_RENDERER (cellpixbuf)->xpad * 2 + pixbuf_width;
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calc_height = (gint) GTK_CELL_RENDERER (cellpixbuf)->ypad * 2 + pixbuf_height;
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if (x_offset) *x_offset = 0;
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if (y_offset) *y_offset = 0;
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if (cell_area && pixbuf_width > 0 && pixbuf_height > 0)
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{
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if (x_offset)
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{
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*x_offset = GTK_CELL_RENDERER (cellpixbuf)->xalign * (cell_area->width - calc_width - (2 * GTK_CELL_RENDERER (cellpixbuf)->xpad));
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*x_offset = MAX (*x_offset, 0) + GTK_CELL_RENDERER (cellpixbuf)->xpad;
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}
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if (y_offset)
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{
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*y_offset = GTK_CELL_RENDERER (cellpixbuf)->yalign * (cell_area->height - calc_height - (2 * GTK_CELL_RENDERER (cellpixbuf)->ypad));
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*y_offset = MAX (*y_offset, 0) + GTK_CELL_RENDERER (cellpixbuf)->ypad;
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}
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}
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if (calc_width)
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*width = calc_width;
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if (height)
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*height = calc_height;
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}
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static void
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gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell,
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GdkWindow *window,
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GtkWidget *widget,
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GdkRectangle *background_area,
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GdkRectangle *cell_area,
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GdkRectangle *expose_area,
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guint flags)
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{
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GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
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GdkPixbuf *pixbuf;
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GdkRectangle pix_rect;
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GdkRectangle draw_rect;
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pixbuf = cellpixbuf->pixbuf;
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if (cell->is_expander)
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{
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if (cell->is_expanded &&
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cellpixbuf->pixbuf_expander_open != NULL)
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pixbuf = cellpixbuf->pixbuf_expander_open;
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else if (! cell->is_expanded &&
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cellpixbuf->pixbuf_expander_closed != NULL)
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pixbuf = cellpixbuf->pixbuf_expander_closed;
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}
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if (!pixbuf)
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return;
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gtk_cell_renderer_pixbuf_get_size (cell, widget, cell_area,
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&pix_rect.x,
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&pix_rect.y,
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&pix_rect.width,
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&pix_rect.height);
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pix_rect.x += cell_area->x;
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pix_rect.y += cell_area->y;
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pix_rect.width -= cell->xpad * 2;
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pix_rect.height -= cell->ypad * 2;
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if (gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect))
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gdk_pixbuf_render_to_drawable_alpha (pixbuf,
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window,
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/* pixbuf 0, 0 is at pix_rect.x, pix_rect.y */
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draw_rect.x - pix_rect.x,
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draw_rect.y - pix_rect.y,
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draw_rect.x,
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draw_rect.y,
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draw_rect.width,
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draw_rect.height,
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GDK_PIXBUF_ALPHA_FULL,
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0,
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GDK_RGB_DITHER_NORMAL,
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0, 0);
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}
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