89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* Copyright 2009 Mark Benjamin <netsurf-browser.org.MarkBenjamin@dfgh.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <windows.h>
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#include "content/urldb.h"
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#include "desktop/browser.h"
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#include "desktop/thumbnail.h"
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#include "utils/log.h"
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#include "image/bitmap.h"
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#include "windows/bitmap.h"
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#include "windows/gui.h"
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#include "windows/plot.h"
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#include "content/hlcache.h"
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bool
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thumbnail_create(hlcache_handle *content,
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struct bitmap *bitmap,
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const char *url)
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{
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int width;
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int height;
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HDC hdc, bufferdc, minidc;
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struct bitmap *fsbitmap;
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width = min(content_get_width(content), 1024);
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height = ((width * bitmap->height) + (bitmap->width / 2)) /
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bitmap->width;
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LOG(("bitmap %p for url %s content %p width %d, height %d",
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bitmap, url, content, width, height));
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/* create two memory device contexts to put the bitmaps in */
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bufferdc = CreateCompatibleDC(NULL);
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if ((bufferdc == NULL)) {
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return false;
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}
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minidc = CreateCompatibleDC(NULL);
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if ((minidc == NULL)) {
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DeleteDC(bufferdc);
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return false;
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}
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/* create a full size bitmap and plot into it */
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fsbitmap = bitmap_create(width, height, BITMAP_NEW | BITMAP_CLEAR_MEMORY | BITMAP_OPAQUE | BITMAP_PERSISTENT);
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SelectObject(bufferdc, fsbitmap->windib);
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hdc = plot_hdc;
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plot_hdc = bufferdc;
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thumbnail_redraw(content, width, height);
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plot_hdc = hdc;
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/* scale bitmap bufferbm into minibm */
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SelectObject(minidc, bitmap->windib);
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bitmap->opaque = true;
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StretchBlt(minidc, 0, 0, bitmap->width, bitmap->height, bufferdc, 0, 0, width, height, SRCCOPY);
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DeleteDC(bufferdc);
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DeleteDC(minidc);
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bitmap_destroy(fsbitmap);
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if (url)
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urldb_set_thumbnail(url, bitmap);
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return true;
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}
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