1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2006 Rob Kendrick <rjek@rjek.com>
*/
/** \file
* Page thumbnail creation (implementation).
*
* Thumbnails are created by setting the current drawing contexts to the
* bitmap (a gdk pixbuf) we are passed, and plotting the page at a small
* scale.
*/
#include <assert.h>
#include <gtk/gtk.h>
#include "netsurf/content/content.h"
#include "netsurf/content/url_store.h"
#include "netsurf/desktop/plotters.h"
#include "netsurf/desktop/browser.h"
#include "netsurf/image/bitmap.h"
#include "netsurf/render/font.h"
#include "netsurf/utils/log.h"
#include "netsurf/gtk/gtk_window.h"
#include "netsurf/gtk/gtk_plotters.h"
/**
* Create a thumbnail of a page.
*
* \param content content structure to thumbnail
* \param bitmap the bitmap to draw to
* \param url the URL the thumnail belongs to, or NULL
*/
bool thumbnail_create(struct content *content, struct bitmap *bitmap,
const char *url)
{
GdkPixbuf *pixbuf = (GdkPixbuf *) bitmap;
gint width = gdk_pixbuf_get_width(pixbuf);
gint height = gdk_pixbuf_get_height(pixbuf);
gint depth = (gdk_screen_get_system_visual(gdk_screen_get_default()))->depth;
GdkPixmap *pixmap = gdk_pixmap_new(NULL, width, height, depth);
GdkColor c = { 0xffffff, 65535, 65535, 65535 };
float scale = 1.0;
assert(content);
assert(bitmap);
gdk_drawable_set_colormap(pixmap, gdk_colormap_get_system());
/* set the plotting functions up */
plot = nsgtk_plotters;
if (content->width)
scale = (float)width / (float)content->width;
nsgtk_plot_set_scale(scale);
/* set to plot to pixmap */
current_drawable = pixmap;
current_gc = gdk_gc_new(current_drawable);
gdk_gc_set_foreground(current_gc, &c);
#ifdef CAIRO_VERSION
current_cr = gdk_cairo_create(current_drawable);
cairo_set_source_rgba(current_cr, 1, 1, 1, 1);
#endif
gdk_draw_rectangle(pixmap, current_gc, TRUE, 0, 0, width, height);
/* render the content */
content_redraw(content, 0, 0, width, height,
0, 0, width, height, scale, 0xFFFFFF);
/* copy thumbnail to pixbuf we've been passed */
gdk_pixbuf_get_from_drawable(pixbuf, pixmap, NULL, 0, 0, 0, 0,
width, height);
/* As a debugging aid, try this to dump out a copy of the thumbnail as a PNG:
* gdk_pixbuf_save(pixbuf, "thumbnail.png", "png", NULL, NULL);
*/
/* register the thumbnail with the URL */
if (url)
url_store_add_thumbnail(url, bitmap);
bitmap_modified(bitmap);
g_object_unref(current_gc);
#ifdef CAIRO_VERSION
cairo_destroy(current_cr);
#endif
g_object_unref(pixmap);
return true;
}
|
