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.
21 #include "ev-document-misc.h"
25 /* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
26 * It is four pixels wider and taller than the source. If source_pixbuf is not
27 * NULL, then it will fill the return pixbuf with the contents of
31 ev_document_misc_get_thumbnail_frame (int width,
33 GdkPixbuf *source_pixbuf)
39 int width_r, height_r;
42 g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
45 width_r = gdk_pixbuf_get_width (source_pixbuf);
46 height_r = gdk_pixbuf_get_height (source_pixbuf);
52 /* make sure no one is passing us garbage */
53 g_assert (width_r >= 0 && height_r >= 0);
55 retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
60 /* make it black and fill in the middle */
61 data = gdk_pixbuf_get_pixels (retval);
62 rowstride = gdk_pixbuf_get_rowstride (retval);
64 gdk_pixbuf_fill (retval, 0x000000ff);
65 for (i = 1; i < height_r + 1; i++)
66 memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
68 /* copy the source pixbuf */
70 gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
76 data [(width_r + 2) * 4 + 3] = 0;
77 data [(width_r + 3) * 4 + 3] = 0;
78 data [(width_r + 2) * 4 + (rowstride * 1) + 3] = 0;
79 data [(width_r + 3) * 4 + (rowstride * 1) + 3] = 0;
81 data [(height_r + 2) * rowstride + 3] = 0;
82 data [(height_r + 3) * rowstride + 3] = 0;
83 data [(height_r + 2) * rowstride + 4 + 3] = 0;
84 data [(height_r + 3) * rowstride + 4 + 3] = 0;
90 ev_document_misc_get_page_border_size (gint page_width,
98 if (page_width < 100) {
101 } else if (page_width < 500) {
112 ev_document_misc_paint_one_page (GdkDrawable *drawable,
118 gdk_draw_rectangle (drawable,
120 widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
126 gdk_draw_rectangle (drawable,
127 widget->style->white_gc,
129 area->x + border->left,
130 area->y + border->top,
131 area->width - (border->left + border->right),
132 area->height - (border->top + border->bottom));
133 gdk_draw_rectangle (drawable,
134 widget->style->mid_gc[widget->state],
137 area->y + area->height - (border->bottom - border->top),
138 border->bottom - border->top,
139 border->bottom - border->top);
140 gdk_draw_rectangle (drawable,
141 widget->style->mid_gc[widget->state],
143 area->x + area->width - (border->right - border->left),
145 border->right - border->left,
146 border->right - border->left);
151 ev_document_misc_surface_from_pixbuf (GdkPixbuf *pixbuf)
153 cairo_surface_t *surface;
156 surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
157 gdk_pixbuf_get_width (pixbuf),
158 gdk_pixbuf_get_height (pixbuf));
159 cr = cairo_create (surface);
160 gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
168 ev_document_misc_pixbuf_from_surface (cairo_surface_t *surface)
171 cairo_surface_t *image;
175 cairo_format_t surface_format;
176 gint pixbuf_n_channels;
177 gint pixbuf_rowstride;
178 guchar *pixbuf_pixels;
181 width = cairo_image_surface_get_width (surface);
182 height = cairo_image_surface_get_height (surface);
184 surface_format = cairo_image_surface_get_format (surface);
185 has_alpha = (surface_format == CAIRO_FORMAT_ARGB32);
187 pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
190 pixbuf_n_channels = gdk_pixbuf_get_n_channels (pixbuf);
191 pixbuf_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
192 pixbuf_pixels = gdk_pixbuf_get_pixels (pixbuf);
194 image = cairo_image_surface_create_for_data (pixbuf_pixels,
198 cr = cairo_create (image);
199 cairo_set_source_surface (cr, surface, 0, 0);
202 cairo_mask_surface (cr, surface, 0, 0);
207 cairo_surface_destroy (image);
209 for (y = 0; y < height; y++) {
210 guchar *p = pixbuf_pixels + y * pixbuf_rowstride;
212 for (x = 0; x < width; x++) {
215 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
219 p[3] = (has_alpha) ? p[3] : 0xff;
222 p[0] = (has_alpha) ? p[3] : 0xff;
227 p += pixbuf_n_channels;
235 ev_document_misc_surface_rotate_and_scale (cairo_surface_t *surface,
240 cairo_surface_t *new_surface;
243 gint new_width = dest_width;
244 gint new_height = dest_height;
246 width = cairo_image_surface_get_width (surface);
247 height = cairo_image_surface_get_height (surface);
249 if (dest_width == width &&
250 dest_height == height &&
251 dest_rotation == 0) {
252 return cairo_surface_reference (surface);
255 if (dest_rotation == 90 || dest_rotation == 270) {
256 new_width = dest_height;
257 new_height = dest_width;
260 new_surface = cairo_surface_create_similar (surface,
261 cairo_surface_get_content (surface),
262 new_width, new_height);
264 cr = cairo_create (new_surface);
265 switch (dest_rotation) {
267 cairo_translate (cr, new_width, 0);
270 cairo_translate (cr, new_width, new_height);
273 cairo_translate (cr, 0, new_height);
276 cairo_translate (cr, 0, 0);
279 if (dest_width != width || dest_height != height) {
280 cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_BILINEAR);
282 (gdouble)dest_width / width,
283 (gdouble)dest_height / height);
286 cairo_rotate (cr, dest_rotation * G_PI / 180.0);
287 cairo_set_source_surface (cr, surface, 0, 0);