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.
26 #include "ev-document-misc.h"
28 /* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
29 * It is four pixels wider and taller than the source. If source_pixbuf is not
30 * NULL, then it will fill the return pixbuf with the contents of
34 ev_document_misc_get_thumbnail_frame (int width,
36 GdkPixbuf *source_pixbuf)
42 int width_r, height_r;
45 g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
48 width_r = gdk_pixbuf_get_width (source_pixbuf);
49 height_r = gdk_pixbuf_get_height (source_pixbuf);
55 /* make sure no one is passing us garbage */
56 g_assert (width_r >= 0 && height_r >= 0);
58 retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
63 /* make it black and fill in the middle */
64 data = gdk_pixbuf_get_pixels (retval);
65 rowstride = gdk_pixbuf_get_rowstride (retval);
67 gdk_pixbuf_fill (retval, 0x000000ff);
68 for (i = 1; i < height_r + 1; i++)
69 memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
71 /* copy the source pixbuf */
73 gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
79 data [(width_r + 2) * 4 + 3] = 0;
80 data [(width_r + 3) * 4 + 3] = 0;
81 data [(width_r + 2) * 4 + (rowstride * 1) + 3] = 0;
82 data [(width_r + 3) * 4 + (rowstride * 1) + 3] = 0;
84 data [(height_r + 2) * rowstride + 3] = 0;
85 data [(height_r + 3) * rowstride + 3] = 0;
86 data [(height_r + 2) * rowstride + 4 + 3] = 0;
87 data [(height_r + 3) * rowstride + 4 + 3] = 0;
93 ev_document_misc_get_page_border_size (gint page_width,
101 if (page_width < 100) {
104 } else if (page_width < 500) {
115 ev_document_misc_paint_one_page (GdkDrawable *drawable,
121 gdk_draw_rectangle (drawable,
123 widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
129 gdk_draw_rectangle (drawable,
130 widget->style->white_gc,
132 area->x + border->left,
133 area->y + border->top,
134 area->width - (border->left + border->right),
135 area->height - (border->top + border->bottom));
136 gdk_draw_rectangle (drawable,
137 widget->style->mid_gc[widget->state],
140 area->y + area->height - (border->bottom - border->top),
141 border->bottom - border->top,
142 border->bottom - border->top);
143 gdk_draw_rectangle (drawable,
144 widget->style->mid_gc[widget->state],
146 area->x + area->width - (border->right - border->left),
148 border->right - border->left,
149 border->right - border->left);
154 ev_document_misc_surface_from_pixbuf (GdkPixbuf *pixbuf)
156 cairo_surface_t *surface;
159 surface = cairo_image_surface_create (gdk_pixbuf_get_has_alpha (pixbuf) ?
160 CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24,
161 gdk_pixbuf_get_width (pixbuf),
162 gdk_pixbuf_get_height (pixbuf));
163 cr = cairo_create (surface);
164 gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
172 ev_document_misc_pixbuf_from_surface (cairo_surface_t *surface)
175 cairo_surface_t *image;
179 cairo_format_t surface_format;
180 gint pixbuf_n_channels;
181 gint pixbuf_rowstride;
182 guchar *pixbuf_pixels;
185 width = cairo_image_surface_get_width (surface);
186 height = cairo_image_surface_get_height (surface);
188 surface_format = cairo_image_surface_get_format (surface);
189 has_alpha = (surface_format == CAIRO_FORMAT_ARGB32);
191 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
194 pixbuf_n_channels = gdk_pixbuf_get_n_channels (pixbuf);
195 pixbuf_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
196 pixbuf_pixels = gdk_pixbuf_get_pixels (pixbuf);
198 image = cairo_image_surface_create_for_data (pixbuf_pixels,
202 cr = cairo_create (image);
203 cairo_set_source_surface (cr, surface, 0, 0);
206 cairo_mask_surface (cr, surface, 0, 0);
211 cairo_surface_destroy (image);
213 for (y = 0; y < height; y++) {
214 guchar *p = pixbuf_pixels + y * pixbuf_rowstride;
216 for (x = 0; x < width; x++) {
219 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
223 p[3] = (has_alpha) ? p[3] : 0xff;
229 p[3] = (has_alpha) ? tmp : 0xff;
231 p += pixbuf_n_channels;
239 ev_document_misc_surface_rotate_and_scale (cairo_surface_t *surface,
244 cairo_surface_t *new_surface;
247 gint new_width = dest_width;
248 gint new_height = dest_height;
250 width = cairo_image_surface_get_width (surface);
251 height = cairo_image_surface_get_height (surface);
253 if (dest_width == width &&
254 dest_height == height &&
255 dest_rotation == 0) {
256 return cairo_surface_reference (surface);
259 if (dest_rotation == 90 || dest_rotation == 270) {
260 new_width = dest_height;
261 new_height = dest_width;
264 new_surface = cairo_surface_create_similar (surface,
265 cairo_surface_get_content (surface),
266 new_width, new_height);
268 cr = cairo_create (new_surface);
269 switch (dest_rotation) {
271 cairo_translate (cr, new_width, 0);
274 cairo_translate (cr, new_width, new_height);
277 cairo_translate (cr, 0, new_height);
280 cairo_translate (cr, 0, 0);
283 if (dest_width != width || dest_height != height) {
284 cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_BILINEAR);
286 (gdouble)dest_width / width,
287 (gdouble)dest_height / height);
290 cairo_rotate (cr, dest_rotation * G_PI / 180.0);
291 cairo_set_source_surface (cr, surface, 0, 0);