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gimp/app/widgets/gimpcellrendererviewable.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcellrendererviewable.c
* Copyright (C) 2003 Michael Natterer <mitch@gimp.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpmarshal.h"
#include "core/gimpviewable.h"
#include "gimpcellrendererviewable.h"
#include "gimppreview-popup.h"
#include "gimppreviewrenderer.h"
enum
{
CLICKED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_RENDERER
};
static void gimp_cell_renderer_viewable_class_init (GimpCellRendererViewableClass *klass);
static void gimp_cell_renderer_viewable_init (GimpCellRendererViewable *cell);
static void gimp_cell_renderer_viewable_finalize (GObject *object);
static void gimp_cell_renderer_viewable_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gimp_cell_renderer_viewable_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_cell_renderer_viewable_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *rectangle,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height);
static void gimp_cell_renderer_viewable_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
GtkCellRendererState flags);
static gboolean gimp_cell_renderer_viewable_activate (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags);
static guint viewable_cell_signals[LAST_SIGNAL] = { 0 };
static GtkCellRendererClass *parent_class = NULL;
GType
gimp_cell_renderer_viewable_get_type (void)
{
static GType cell_type = 0;
if (! cell_type)
{
static const GTypeInfo cell_info =
{
sizeof (GimpCellRendererViewableClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_cell_renderer_viewable_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpCellRendererViewable),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_cell_renderer_viewable_init,
};
cell_type = g_type_register_static (GTK_TYPE_CELL_RENDERER,
"GimpCellRendererViewable",
&cell_info, 0);
}
return cell_type;
}
static void
gimp_cell_renderer_viewable_class_init (GimpCellRendererViewableClass *klass)
{
GObjectClass *object_class;
GtkCellRendererClass *cell_class;
object_class = G_OBJECT_CLASS (klass);
cell_class = GTK_CELL_RENDERER_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
viewable_cell_signals[CLICKED] =
g_signal_new ("clicked",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GimpCellRendererViewableClass, clicked),
NULL, NULL,
gimp_marshal_VOID__STRING_FLAGS,
G_TYPE_NONE, 2,
G_TYPE_STRING,
GDK_TYPE_MODIFIER_TYPE);
object_class->finalize = gimp_cell_renderer_viewable_finalize;
object_class->get_property = gimp_cell_renderer_viewable_get_property;
object_class->set_property = gimp_cell_renderer_viewable_set_property;
cell_class->get_size = gimp_cell_renderer_viewable_get_size;
cell_class->render = gimp_cell_renderer_viewable_render;
cell_class->activate = gimp_cell_renderer_viewable_activate;
klass->clicked = NULL;
g_object_class_install_property (object_class,
PROP_RENDERER,
g_param_spec_object ("renderer",
NULL, NULL,
GIMP_TYPE_PREVIEW_RENDERER,
G_PARAM_READWRITE));
}
static void
gimp_cell_renderer_viewable_init (GimpCellRendererViewable *cellviewable)
{
GTK_CELL_RENDERER (cellviewable)->mode = GTK_CELL_RENDERER_MODE_ACTIVATABLE;
}
static void
gimp_cell_renderer_viewable_finalize (GObject *object)
{
GimpCellRendererViewable *cell;
cell = GIMP_CELL_RENDERER_VIEWABLE (object);
if (cell->renderer)
{
g_object_unref (cell->renderer);
cell->renderer = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_cell_renderer_viewable_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GimpCellRendererViewable *cell;
cell = GIMP_CELL_RENDERER_VIEWABLE (object);
switch (param_id)
{
case PROP_RENDERER:
g_value_set_object (value, cell->renderer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gimp_cell_renderer_viewable_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GimpCellRendererViewable *cell;
cell = GIMP_CELL_RENDERER_VIEWABLE (object);
switch (param_id)
{
case PROP_RENDERER:
if (cell->renderer)
g_object_unref (cell->renderer);
cell->renderer = (GimpPreviewRenderer *) g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gimp_cell_renderer_viewable_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
GdkRectangle *cell_area,
gint *x_offset,
gint *y_offset,
gint *width,
gint *height)
{
GimpCellRendererViewable *cellviewable;
gint preview_width = 0;
gint preview_height = 0;
gint calc_width;
gint calc_height;
cellviewable = GIMP_CELL_RENDERER_VIEWABLE (cell);
if (cellviewable->renderer)
{
preview_width = (cellviewable->renderer->width +
2 * cellviewable->renderer->border_width);
preview_height = (cellviewable->renderer->height +
2 * cellviewable->renderer->border_width);
}
calc_width = (gint) cell->xpad * 2 + preview_width;
calc_height = (gint) cell->ypad * 2 + preview_height;
if (x_offset) *x_offset = 0;
if (y_offset) *y_offset = 0;
if (cell_area && preview_width > 0 && preview_height > 0)
{
if (x_offset)
{
*x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
1.0 - cell->xalign : cell->xalign) *
(cell_area->width - calc_width - 2 * cell->xpad));
*x_offset = (MAX (*x_offset, 0) + cell->xpad);
}
if (y_offset)
{
*y_offset = (cell->yalign *
(cell_area->height - calc_height - 2 * cell->ypad));
*y_offset = (MAX (*y_offset, 0) + cell->ypad);
}
}
if (width) *width = calc_width;
if (height) *height = calc_height;
}
static void
gimp_cell_renderer_viewable_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
GtkCellRendererState flags)
{
GimpCellRendererViewable *cellviewable;
cellviewable = GIMP_CELL_RENDERER_VIEWABLE (cell);
if (cellviewable->renderer)
{
if (! (flags & GTK_CELL_RENDERER_SELECTED))
{
GimpRGB black = { 0.0, 0.0, 0.0, 1.0 };
gimp_preview_renderer_set_border_color (cellviewable->renderer,
&black);
gimp_preview_renderer_remove_idle (cellviewable->renderer);
}
gimp_preview_renderer_draw (cellviewable->renderer, window, widget,
cell_area, expose_area);
}
}
static gboolean
gimp_cell_renderer_viewable_activate (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GimpCellRendererViewable *cellviewable;
cellviewable = GIMP_CELL_RENDERER_VIEWABLE (cell);
if (cellviewable->renderer)
{
GdkModifierType state = 0;
if (event && ((GdkEventAny *) event)->type == GDK_BUTTON_PRESS)
state = ((GdkEventButton *) event)->state;
if (! event ||
(((GdkEventAny *) event)->type == GDK_BUTTON_PRESS &&
((GdkEventButton *) event)->button == 1))
{
gimp_cell_renderer_viewable_clicked (cellviewable, path, state);
return TRUE;
}
}
return FALSE;
}
GtkCellRenderer *
gimp_cell_renderer_viewable_new (void)
{
return g_object_new (GIMP_TYPE_CELL_RENDERER_VIEWABLE, NULL);
}
void
gimp_cell_renderer_viewable_clicked (GimpCellRendererViewable *cell,
const gchar *path,
GdkModifierType state)
{
GdkEvent *event;
g_return_if_fail (GIMP_IS_CELL_RENDERER_VIEWABLE (cell));
g_return_if_fail (path != NULL);
g_signal_emit (cell, viewable_cell_signals[CLICKED], 0, path, state);
event = gtk_get_current_event ();
if (event)
{
if (((GdkEventAny *) event)->type == GDK_BUTTON_PRESS &&
((GdkEventButton *) event)->button == 1)
gimp_preview_popup_show (gtk_get_event_widget (event),
(GdkEventButton *) event,
cell->renderer->viewable,
cell->renderer->width,
cell->renderer->height,
TRUE);
gdk_event_free (event);
}
}
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