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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpviewrendererimage.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 "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "base/temp-buf.h"
#include "core/gimpimage.h"
#include "gimpviewrendererimage.h"
static void gimp_view_renderer_image_class_init (GimpViewRendererImageClass *klass);
static void gimp_view_renderer_image_init (GimpViewRendererImage *renderer);
static void gimp_view_renderer_image_render (GimpViewRenderer *renderer,
GtkWidget *widget);
static GimpViewRendererClass *parent_class = NULL;
GType
gimp_view_renderer_image_get_type (void)
{
static GType renderer_type = 0;
if (! renderer_type)
{
static const GTypeInfo renderer_info =
{
sizeof (GimpViewRendererImageClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_view_renderer_image_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpViewRendererImage),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_view_renderer_image_init,
};
renderer_type = g_type_register_static (GIMP_TYPE_VIEW_RENDERER,
"GimpViewRendererImage",
&renderer_info, 0);
}
return renderer_type;
}
static void
gimp_view_renderer_image_class_init (GimpViewRendererImageClass *klass)
{
GimpViewRendererClass *renderer_class = GIMP_VIEW_RENDERER_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
renderer_class->render = gimp_view_renderer_image_render;
}
static void
gimp_view_renderer_image_init (GimpViewRendererImage *renderer)
{
renderer->channel = -1;
}
static void
gimp_view_renderer_image_render (GimpViewRenderer *renderer,
GtkWidget *widget)
{
GimpViewRendererImage *rendererimage = GIMP_VIEW_RENDERER_IMAGE (renderer);
GimpImage *gimage;
gint view_width;
gint view_height;
gboolean scaling_up;
TempBuf *render_buf = NULL;
gimage = GIMP_IMAGE (renderer->viewable);
gimp_viewable_calc_preview_size (gimage->width,
gimage->height,
renderer->width,
renderer->height,
renderer->dot_for_dot,
gimage->xresolution,
gimage->yresolution,
&view_width,
&view_height,
&scaling_up);
if (scaling_up)
{
TempBuf *temp_buf;
temp_buf = gimp_viewable_get_new_preview (renderer->viewable,
gimage->width, gimage->height);
if (temp_buf)
{
render_buf = temp_buf_scale (temp_buf, view_width, view_height);
temp_buf_free (temp_buf);
}
}
else
{
render_buf = gimp_viewable_get_new_preview (renderer->viewable,
view_width,
view_height);
}
if (render_buf)
{
gint component_index = -1;
/* xresolution != yresolution */
if (view_width > renderer->width || view_height > renderer->height)
{
TempBuf *temp_buf;
temp_buf = temp_buf_scale (render_buf,
renderer->width, renderer->height);
temp_buf_free (render_buf);
render_buf = temp_buf;
}
if (view_width < renderer->width)
render_buf->x = (renderer->width - view_width) / 2;
if (view_height < renderer->height)
render_buf->y = (renderer->height - view_height) / 2;
if (rendererimage->channel != -1)
component_index =
gimp_image_get_component_index (gimage, rendererimage->channel);
gimp_view_renderer_render_buffer (renderer, render_buf,
component_index,
GIMP_VIEW_BG_CHECKS,
GIMP_VIEW_BG_WHITE);
temp_buf_free (render_buf);
}
else
{
const gchar *stock_id;
switch (rendererimage->channel)
{
case GIMP_RED_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_RED; break;
case GIMP_GREEN_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_GREEN; break;
case GIMP_BLUE_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_BLUE; break;
case GIMP_GRAY_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_GRAY; break;
case GIMP_INDEXED_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_INDEXED; break;
case GIMP_ALPHA_CHANNEL: stock_id = GIMP_STOCK_CHANNEL_ALPHA; break;
default:
stock_id = gimp_viewable_get_stock_id (renderer->viewable);
break;
}
gimp_view_renderer_default_render_stock (renderer, widget, stock_id);
}
}
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