2 * Copyright (c) 2007 Carlos Garcia Campos <carlosgc@gnome.org>
3 * Copyright (C) 2000-2003 Marco Pesenti Gritti
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #include "ev-document-misc.h"
24 /* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
25 * It is four pixels wider and taller than the source. If source_pixbuf is not
26 * NULL, then it will fill the return pixbuf with the contents of
30 ev_document_misc_get_thumbnail_frame (int width,
32 GdkPixbuf *source_pixbuf)
38 int width_r, height_r;
41 g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
44 width_r = gdk_pixbuf_get_width (source_pixbuf);
45 height_r = gdk_pixbuf_get_height (source_pixbuf);
51 /* make sure no one is passing us garbage */
52 g_assert (width_r >= 0 && height_r >= 0);
54 retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
59 /* make it black and fill in the middle */
60 data = gdk_pixbuf_get_pixels (retval);
61 rowstride = gdk_pixbuf_get_rowstride (retval);
63 gdk_pixbuf_fill (retval, 0x000000ff);
64 for (i = 1; i < height_r + 1; i++)
65 memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
67 /* copy the source pixbuf */
69 gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
75 data [(width_r + 2) * 4 + 3] = 0;
76 data [(width_r + 3) * 4 + 3] = 0;
77 data [(width_r + 2) * 4 + (rowstride * 1) + 3] = 0;
78 data [(width_r + 3) * 4 + (rowstride * 1) + 3] = 0;
80 data [(height_r + 2) * rowstride + 3] = 0;
81 data [(height_r + 3) * rowstride + 3] = 0;
82 data [(height_r + 2) * rowstride + 4 + 3] = 0;
83 data [(height_r + 3) * rowstride + 4 + 3] = 0;
89 ev_document_misc_get_page_border_size (gint page_width,
97 if (page_width < 100) {
100 } else if (page_width < 500) {
111 ev_document_misc_paint_one_page (GdkDrawable *drawable,
117 gdk_draw_rectangle (drawable,
119 widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
125 gdk_draw_rectangle (drawable,
126 widget->style->white_gc,
128 area->x + border->left,
129 area->y + border->top,
130 area->width - (border->left + border->right),
131 area->height - (border->top + border->bottom));
132 gdk_draw_rectangle (drawable,
133 widget->style->mid_gc[widget->state],
136 area->y + area->height - (border->bottom - border->top),
137 border->bottom - border->top,
138 border->bottom - border->top);
139 gdk_draw_rectangle (drawable,
140 widget->style->mid_gc[widget->state],
142 area->x + area->width - (border->right - border->left),
144 border->right - border->left,
145 border->right - border->left);
150 ev_document_misc_surface_from_pixbuf (GdkPixbuf *pixbuf)
152 cairo_surface_t *surface;
155 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
156 gdk_pixbuf_get_width (pixbuf),
157 gdk_pixbuf_get_height (pixbuf));
158 cr = cairo_create (surface);
159 gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
167 ev_document_misc_pixbuf_from_surface (cairo_surface_t *surface)
170 cairo_surface_t *image;
174 cairo_format_t surface_format;
175 gint pixbuf_n_channels;
176 gint pixbuf_rowstride;
177 guchar *pixbuf_pixels;
180 width = cairo_image_surface_get_width (surface);
181 height = cairo_image_surface_get_height (surface);
183 surface_format = cairo_image_surface_get_format (surface);
184 has_alpha = (surface_format == CAIRO_FORMAT_ARGB32);
186 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
189 pixbuf_n_channels = gdk_pixbuf_get_n_channels (pixbuf);
190 pixbuf_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
191 pixbuf_pixels = gdk_pixbuf_get_pixels (pixbuf);
193 image = cairo_image_surface_create_for_data (pixbuf_pixels,
197 cr = cairo_create (image);
198 cairo_set_source_surface (cr, surface, 0, 0);
201 cairo_mask_surface (cr, surface, 0, 0);
206 cairo_surface_destroy (image);
208 for (y = 0; y < height; y++) {
209 guchar *p = pixbuf_pixels + y * pixbuf_rowstride;
211 for (x = 0; x < width; x++) {
214 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
218 p[3] = (has_alpha) ? p[3] : 0xff;
221 p[0] = (has_alpha) ? p[3] : 0xff;
226 p += pixbuf_n_channels;
234 ev_document_misc_surface_rotate_and_scale (cairo_surface_t *surface,
239 cairo_surface_t *new_surface;
242 gint new_width = dest_width;
243 gint new_height = dest_height;
245 width = cairo_image_surface_get_width (surface);
246 height = cairo_image_surface_get_height (surface);
248 if (dest_width == width &&
249 dest_height == height &&
250 dest_rotation == 0) {
251 return cairo_surface_reference (surface);
254 if (dest_rotation == 90 || dest_rotation == 270) {
255 new_width = dest_height;
256 new_height = dest_width;
259 new_surface = cairo_surface_create_similar (surface,
260 CAIRO_CONTENT_COLOR_ALPHA,
261 new_width, new_height);
263 cr = cairo_create (new_surface);
264 switch (dest_rotation) {
266 cairo_translate (cr, new_width, 0);
269 cairo_translate (cr, new_width, new_height);
272 cairo_translate (cr, 0, new_height);
275 cairo_translate (cr, 0, 0);
278 if (dest_width != width || dest_height != height) {
279 cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_BILINEAR);
281 (gdouble)dest_width / width,
282 (gdouble)dest_height / height);
285 cairo_rotate (cr, dest_rotation * G_PI / 180.0);
286 cairo_set_source_surface (cr, surface, 0, 0);