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/*
* Copyright 2011 Michael Drake <tlsa@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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, see <http://www.gnu.org/licenses/>.
*/
/** \file
* Core thumbnail handling (implementation).
*/
#include <assert.h>
#include <stdbool.h>
#include "content/content.h"
#include "content/hlcache.h"
#include "desktop/browser.h"
#include "desktop/options.h"
#include "desktop/plotters.h"
#include "desktop/thumbnail.h"
#include "utils/log.h"
/* exported interface, documented in thumbnail.h */
bool thumbnail_redraw(struct hlcache_handle *content,
int width, int height)
{
struct rect clip;
float scale;
assert(content);
/* No selection */
current_redraw_browser = NULL;
/* Set clip rectangle to required thumbnail size */
clip.x0 = 0;
clip.y0 = 0;
clip.x1 = width;
clip.y1 = height;
plot.clip(&clip);
/* Plot white background */
plot.rectangle(clip.x0, clip.y0, clip.x1, clip.y1,
plot_style_fill_white);
/* Find the scale we're using */
scale = thumbnail_get_redraw_scale(content, width);
/* Render the content */
return content_redraw(content, 0, 0, width, height, &clip, scale,
0xFFFFFF);
}
/* exported interface, documented in thumbnail.h */
float thumbnail_get_redraw_scale(struct hlcache_handle *content, int width)
{
assert(content);
if (content_get_width(content))
return (float)width / (float)content_get_width(content);
else
return 1.0;
}
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