1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
3 * Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org>
4 * Copyright (C) 2005, Bastien Nocera <hadess@hadess.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 #include <glib/gi18n-lib.h>
29 #include "impress-document.h"
31 #include "ev-document-misc.h"
32 #include "ev-document-thumbnails.h"
34 struct _ImpressDocumentClass
36 GObjectClass parent_class;
39 struct _ImpressDocument
41 GObject parent_instance;
49 PangoContext *pango_ctx;
51 /* Only used while rendering inside the mainloop */
57 #define PAGE_WIDTH 1024
58 #define PAGE_HEIGHT 768
60 typedef struct _ImpressDocumentClass ImpressDocumentClass;
62 static void impress_document_document_iface_init (EvDocumentIface *iface);
63 static void impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
65 EV_BACKEND_REGISTER_WITH_CODE (ImpressDocument, impress_document,
67 EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
68 impress_document_document_thumbnails_iface_init);
73 imp_render_draw_bezier_real (GdkDrawable *d, GdkGC *gc, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3)
76 int ax, bx, cx, ay, by, cy;
83 bx = 3 * (x2 - x1) - cx;
84 ax = x3 - x0 - cx - bx;
86 by = 3 * (y2 - y1) - cy;
87 ay = y3 - y0 - cy - by;
89 for (t = 0; t < 1; t += 0.01) {
92 nx = ax * t3 + bx * t2 + cx * t + x0;
93 ny = ay * t3 + by * t2 + cy * t + y0;
94 gdk_draw_line (d, gc, x, y, nx, ny);
101 imp_render_get_size(void *drw_data, int *w, int *h)
103 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
105 gdk_drawable_get_size(impress_document->pixmap, w, h);
109 imp_render_set_fg_color(void *drw_data, ImpColor *color)
111 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
115 c.green = color->green;
116 c.blue = color->blue;
117 gdk_gc_set_rgb_fg_color(impress_document->gc, &c);
121 imp_render_draw_line(void *drw_data, int x1, int y1, int x2, int y2)
123 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
125 gdk_draw_line(impress_document->pixmap, impress_document->gc, x1, y1, x2, y2);
129 imp_render_draw_rect(void *drw_data, int fill, int x, int y, int w, int h)
131 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
133 gdk_draw_rectangle(impress_document->pixmap, impress_document->gc, fill, x, y, w, h);
137 imp_render_draw_polygon(void *drw_data, int fill, ImpPoint *pts, int nr_pts)
139 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
141 gdk_draw_polygon(impress_document->pixmap, impress_document->gc, fill, (GdkPoint *)pts, nr_pts);
145 imp_render_draw_arc(void *drw_data, int fill, int x, int y, int w, int h, int sa, int ea)
147 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
149 gdk_draw_arc(impress_document->pixmap, impress_document->gc, fill, x, y, w, h, sa * 64, ea * 64);
153 imp_render_draw_bezier(void *drw_data, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3)
155 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
157 imp_render_draw_bezier_real (impress_document->pixmap, impress_document->gc, x0, y0, x1, y1, x2, y2, x3, y3);
161 imp_render_open_image(void *drw_data, const unsigned char *pix, size_t size)
163 GdkPixbufLoader *gpl;
166 gpl = gdk_pixbuf_loader_new();
167 gdk_pixbuf_loader_write(gpl, pix, size, NULL);
168 gdk_pixbuf_loader_close(gpl, NULL);
169 pb = gdk_pixbuf_loader_get_pixbuf(gpl);
174 imp_render_get_image_size(void *drw_data, void *img_data, int *w, int *h)
176 GdkPixbuf *pb = (GdkPixbuf *) img_data;
178 *w = gdk_pixbuf_get_width(pb);
179 *h = gdk_pixbuf_get_height(pb);
183 imp_render_scale_image(void *drw_data, void *img_data, int w, int h)
185 GdkPixbuf *pb = (GdkPixbuf *) img_data;
187 return gdk_pixbuf_scale_simple(pb, w, h, GDK_INTERP_BILINEAR);
191 imp_render_draw_image(void *drw_data, void *img_data, int x, int y, int w, int h)
193 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
194 GdkPixbuf *pb = (GdkPixbuf *) img_data;
196 gdk_draw_pixbuf(impress_document->pixmap, impress_document->gc, pb, 0, 0, x, y, w, h, GDK_RGB_DITHER_NONE, 0, 0);
200 imp_render_close_image(void *drw_data, void *img_data)
202 GdkPixbuf *pb = (GdkPixbuf *) img_data;
204 g_object_unref(G_OBJECT(pb));
208 imp_render_markup(const char *text, size_t len, int styles, int size)
210 double scr_mm, scr_px, dpi;
215 scr_mm = gdk_screen_get_height_mm(gdk_screen_get_default());
216 scr_px = gdk_screen_get_height(gdk_screen_get_default());
217 dpi = (scr_px / scr_mm) * 25.4;
218 sz = (int) ((double) size * 72.0 * PANGO_SCALE / dpi);
219 esc = g_markup_escape_text(text, len);
220 ret = g_strdup_printf("<span size ='%d'>%s</span>", sz, esc);
226 imp_render_get_text_size(void *drw_data, const char *text, size_t len, int size, int styles, int *w, int *h)
228 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
233 g_return_if_fail (impress_document->pango_ctx != NULL);
235 lay = pango_layout_new(impress_document->pango_ctx);
236 m = imp_render_markup(text, len, styles, size);
237 pango_layout_set_markup(lay, m, strlen(m));
238 pango_layout_get_size(lay, &pw, &ph);
241 *w = pw / PANGO_SCALE;
242 *h = ph / PANGO_SCALE;
246 imp_render_draw_text(void *drw_data, int x, int y, const char *text, size_t len, int size, int styles)
248 ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
252 g_return_if_fail (impress_document->pango_ctx != NULL);
254 lay = pango_layout_new(impress_document->pango_ctx);
255 m = imp_render_markup(text, len, styles, size);
256 pango_layout_set_markup(lay, m, strlen(m));
257 gdk_draw_layout(impress_document->pixmap, impress_document->gc, x, y, lay);
262 static const ImpDrawer imp_render_functions = {
264 imp_render_set_fg_color,
265 imp_render_draw_line,
266 imp_render_draw_rect,
267 imp_render_draw_polygon,
269 imp_render_draw_bezier,
270 imp_render_open_image,
271 imp_render_get_image_size,
272 imp_render_scale_image,
273 imp_render_draw_image,
274 imp_render_close_image,
275 imp_render_get_text_size,
279 /* Document interface */
281 impress_document_load (EvDocument *document,
285 ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
290 /* FIXME: Could we actually load uris ? */
291 filename = g_filename_from_uri (uri, NULL, error);
295 imp = imp_open (filename, &err);
300 g_set_error_literal (error,
302 EV_DOCUMENT_ERROR_INVALID,
303 _("Invalid document"));
306 impress_document->imp = imp;
312 impress_document_save (EvDocument *document,
316 g_set_error_literal (error,
318 EV_DOCUMENT_ERROR_INVALID,
324 impress_document_get_n_pages (EvDocument *document)
326 ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
328 g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), 0);
329 g_return_val_if_fail (impress_document->imp != NULL, 0);
331 return imp_nr_pages (impress_document->imp);
335 impress_document_get_page_size (EvDocument *document,
340 ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
342 g_return_if_fail (IMPRESS_IS_DOCUMENT (document));
343 g_return_if_fail (impress_document->imp != NULL);
347 *height = PAGE_HEIGHT;
351 imp_render_get_from_drawable (ImpressDocument *impress_document)
355 page = imp_get_page (impress_document->imp, impress_document->pagenum);
357 g_return_val_if_fail (page != NULL, FALSE);
359 ev_document_doc_mutex_lock ();
360 imp_context_set_page (impress_document->ctx, page);
361 imp_render (impress_document->ctx, impress_document);
362 ev_document_doc_mutex_unlock ();
364 impress_document->pixbuf = gdk_pixbuf_get_from_drawable (NULL,
365 GDK_DRAWABLE (impress_document->pixmap),
369 PAGE_WIDTH, PAGE_HEIGHT);
371 g_cond_broadcast (impress_document->cond);
376 impress_document_render_pixbuf (EvDocument *document,
379 ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
382 g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), NULL);
383 g_return_val_if_fail (impress_document->imp != NULL, NULL);
385 impress_document->pagenum = rc->page->index;
387 g_mutex_lock (impress_document->mutex);
388 impress_document->cond = g_cond_new ();
390 ev_document_fc_mutex_unlock ();
391 ev_document_doc_mutex_unlock ();
392 g_idle_add ((GSourceFunc) imp_render_get_from_drawable, impress_document);
393 g_cond_wait (impress_document->cond, impress_document->mutex);
394 g_cond_free (impress_document->cond);
395 ev_document_doc_mutex_lock ();
396 ev_document_fc_mutex_lock ();
398 g_mutex_unlock (impress_document->mutex);
400 pixbuf = impress_document->pixbuf;
401 impress_document->pixbuf = NULL;
406 static cairo_surface_t *
407 impress_document_render (EvDocument *document,
411 cairo_surface_t *surface, *scaled_surface;
413 pixbuf = impress_document_render_pixbuf (document, rc);
415 /* FIXME: impress backend should be ported to cairo */
416 surface = ev_document_misc_surface_from_pixbuf (pixbuf);
417 g_object_unref (pixbuf);
419 scaled_surface = ev_document_misc_surface_rotate_and_scale (surface,
420 (PAGE_WIDTH * rc->scale) + 0.5,
421 (PAGE_HEIGHT * rc->scale) + 0.5,
423 cairo_surface_destroy (surface);
425 return scaled_surface;
429 impress_document_finalize (GObject *object)
431 ImpressDocument *impress_document = IMPRESS_DOCUMENT (object);
433 if (impress_document->mutex)
434 g_mutex_free (impress_document->mutex);
436 if (impress_document->imp)
437 imp_close (impress_document->imp);
439 if (impress_document->ctx)
440 imp_delete_context (impress_document->ctx);
442 if (impress_document->pango_ctx)
443 g_object_unref (impress_document->pango_ctx);
445 if (impress_document->pixmap)
446 g_object_unref (G_OBJECT (impress_document->pixmap));
448 if (impress_document->gc)
449 g_object_unref (impress_document->gc);
451 G_OBJECT_CLASS (impress_document_parent_class)->finalize (object);
455 impress_document_class_init (ImpressDocumentClass *klass)
457 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
459 gobject_class->finalize = impress_document_finalize;
462 static EvDocumentInfo *
463 impress_document_get_info (EvDocument *document)
465 EvDocumentInfo *info;
467 info = g_new0 (EvDocumentInfo, 1);
468 info->fields_mask = 0;
474 impress_document_document_iface_init (EvDocumentIface *iface)
476 iface->load = impress_document_load;
477 iface->save = impress_document_save;
478 iface->get_n_pages = impress_document_get_n_pages;
479 iface->get_page_size = impress_document_get_page_size;
480 iface->render = impress_document_render;
481 iface->get_info = impress_document_get_info;
485 impress_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
490 GdkPixbuf *scaled_pixbuf;
492 pixbuf = impress_document_render_pixbuf (EV_DOCUMENT (document), rc);
493 scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf,
494 (PAGE_WIDTH * rc->scale),
495 (PAGE_HEIGHT * rc->scale),
496 GDK_INTERP_BILINEAR);
497 g_object_unref (pixbuf);
501 GdkPixbuf *tmp_pixbuf = scaled_pixbuf;
503 scaled_pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf);
504 g_object_unref (tmp_pixbuf);
507 return scaled_pixbuf;
511 impress_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
516 gdouble page_width, page_height;
518 impress_document_get_page_size (EV_DOCUMENT (document),
520 &page_width, &page_height);
522 if (rc->rotation == 90 || rc->rotation == 270)
524 *width = (gint) (page_height * rc->scale);
525 *height = (gint) (page_width * rc->scale);
529 *width = (gint) (page_width * rc->scale);
530 *height = (gint) (page_height * rc->scale);
535 impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
537 iface->get_thumbnail = impress_document_thumbnails_get_thumbnail;
538 iface->get_dimensions = impress_document_thumbnails_get_dimensions;
542 impress_document_init (ImpressDocument *impress_document)
546 impress_document->mutex = g_mutex_new ();
547 impress_document->ctx = imp_create_context(&imp_render_functions);
549 window = gdk_screen_get_root_window (gdk_screen_get_default ());
551 impress_document->pixmap = gdk_pixmap_new (window,
552 PAGE_WIDTH, PAGE_HEIGHT, -1);
553 impress_document->gc = gdk_gc_new (impress_document->pixmap);
554 impress_document->pango_ctx = gdk_pango_context_get_for_screen (gdk_screen_get_default ());
558 * vim: sw=2 ts=8 cindent noai bs=2