mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-24 13:06:49 +03:00
99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/*
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* Copyright 2008 Chris Young <chris@unsatisfactorysoftware.co.uk>
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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 <stdbool.h>
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#include <libnsfb.h>
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#include <libnsfb_plot.h>
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#include "utils/log.h"
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#include "desktop/thumbnail.h"
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#include "content/urldb.h"
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#include "framebuffer/gui.h"
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#include "framebuffer/fbtk.h"
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#include "framebuffer/framebuffer.h"
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bool
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thumbnail_create(struct 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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nsfb_t *tbm = (nsfb_t *)bitmap; /* target bitmap */
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nsfb_t *bm; /* temporary bitmap */
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nsfb_t *current; /* current main fb */
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int width, height; /* target bitmap width height */
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int cwidth, cheight;/* content width /height */
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nsfb_bbox_t loc;
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struct redraw_context ctx = {
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.interactive = false,
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.plot = &fb_plotters
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};
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nsfb_get_geometry(tbm, &width, &height, NULL);
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LOG(("width %d, height %d", width, height));
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/* Calculate size of buffer to render the content into */
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/* We get the width from the content width, unless it exceeds 1024,
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* in which case we use 1024. This means we never create excessively
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* large render buffers for huge contents, which would eat memory and
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* cripple performance. */
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cwidth = min(content_get_width(content), 1024);
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/* The height is set in proportion with the width, according to the
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* aspect ratio of the required thumbnail. */
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cheight = ((cwidth * height) + (width / 2)) / width;
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/* create temporary surface */
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bm = nsfb_new(NSFB_SURFACE_RAM);
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if (bm == NULL) {
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return false;
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}
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nsfb_set_geometry(bm, cwidth, cheight, NSFB_FMT_XBGR8888);
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if (nsfb_init(bm) == -1) {
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nsfb_free(bm);
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return false;
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}
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current = framebuffer_set_surface(bm);
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/* render the content into temporary surface */
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thumbnail_redraw(content, cwidth, cheight, &ctx);
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framebuffer_set_surface(current);
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loc.x0 = 0;
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loc.y0 = 0;
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loc.x1 = width;
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loc.y1 = height;
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nsfb_plot_copy(bm, NULL, tbm, &loc);
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nsfb_free(bm);
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/* register the thumbnail with the URL */
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if (url != NULL)
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urldb_set_thumbnail(url, bitmap);
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return true;
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}
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