gimp/app/widgets/gimpgradientpreview.c

167 lines
4.3 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpGradientPreview Widget
* Copyright (C) 2001 Michael Natterer
*
* 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 "base/temp-buf.h"
#include "core/gimpgradient.h"
#include "gimpgradientpreview.h"
static void gimp_gradient_preview_class_init (GimpGradientPreviewClass *klass);
static void gimp_gradient_preview_init (GimpGradientPreview *preview);
static void gimp_gradient_preview_render (GimpPreview *preview);
static void gimp_gradient_preview_get_size (GimpPreview *preview,
gint size,
gint *width,
gint *height);
static gboolean gimp_gradient_preview_needs_popup (GimpPreview *preview);
static GtkWidget * gimp_gradient_preview_create_popup (GimpPreview *preview);
static GimpPreviewClass *parent_class = NULL;
GtkType
gimp_gradient_preview_get_type (void)
{
static GtkType preview_type = 0;
if (! preview_type)
{
GtkTypeInfo preview_info =
{
"GimpGradientPreview",
sizeof (GimpGradientPreview),
sizeof (GimpGradientPreviewClass),
(GtkClassInitFunc) gimp_gradient_preview_class_init,
(GtkObjectInitFunc) gimp_gradient_preview_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
preview_type = gtk_type_unique (GIMP_TYPE_PREVIEW, &preview_info);
}
return preview_type;
}
static void
gimp_gradient_preview_class_init (GimpGradientPreviewClass *klass)
{
GtkObjectClass *object_class;
GimpPreviewClass *preview_class;
object_class = (GtkObjectClass *) klass;
preview_class = (GimpPreviewClass *) klass;
parent_class = gtk_type_class (GIMP_TYPE_PREVIEW);
preview_class->get_size = gimp_gradient_preview_get_size;
preview_class->render = gimp_gradient_preview_render;
preview_class->needs_popup = gimp_gradient_preview_needs_popup;
preview_class->create_popup = gimp_gradient_preview_create_popup;
}
static void
gimp_gradient_preview_init (GimpGradientPreview *gradient_preview)
{
}
static void
gimp_gradient_preview_get_size (GimpPreview *preview,
gint size,
gint *width,
gint *height)
{
*width = size * 3;
*height = size;
}
static void
gimp_gradient_preview_render (GimpPreview *preview)
{
GimpGradient *gradient;
TempBuf *temp_buf;
gint width;
gint height;
gradient = GIMP_GRADIENT (preview->viewable);
width = preview->width;
height = preview->height;
temp_buf = gimp_viewable_get_new_preview (preview->viewable,
width, height);
gimp_preview_render_and_flush (preview,
temp_buf,
-1);
temp_buf_free (temp_buf);
}
static gboolean
gimp_gradient_preview_needs_popup (GimpPreview *preview)
{
GimpGradient *gradient;
gint popup_width;
gint popup_height;
gradient = GIMP_GRADIENT (preview->viewable);
popup_width = 48;
popup_height = 24;
if (popup_width > preview->width ||
popup_height > preview->height)
return TRUE;
return FALSE;
}
static GtkWidget *
gimp_gradient_preview_create_popup (GimpPreview *preview)
{
GimpGradient *gradient;
gint popup_width;
gint popup_height;
gradient = GIMP_GRADIENT (preview->viewable);
popup_width = 128;
popup_height = 32;
return gimp_preview_new_full (preview->viewable,
popup_width,
popup_height,
0,
TRUE, FALSE, FALSE);
}