+++ /dev/null
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
-/*
- * Copyright (C) 2005, Jonathan Blandford <jrb@gnome.org>
- * Copyright (C) 2005, Bastien Nocera <hadess@hadess.net>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <gtk/gtk.h>
-#include <string.h>
-#include "imposter.h"
-#include "impress-document.h"
-#include "ev-document-thumbnails.h"
-#include "ev-document-misc.h"
-
-struct _ImpressDocumentClass
-{
- GObjectClass parent_class;
-};
-
-struct _ImpressDocument
-{
- GObject parent_instance;
-
- ImpDoc *imp;
- ImpRenderCtx *ctx;
-
- GMutex *mutex;
- GdkPixmap *pixmap;
- GdkGC *gc;
- PangoContext *pango_ctx;
-
- /* Only used while rendering inside the mainloop */
- int pagenum;
- GdkPixbuf *pixbuf;
- GCond *cond;
-};
-
-#define PAGE_WIDTH 1024
-#define PAGE_HEIGHT 768
-
-typedef struct _ImpressDocumentClass ImpressDocumentClass;
-
-static void impress_document_document_iface_init (EvDocumentIface *iface);
-static void impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface);
-
-G_DEFINE_TYPE_WITH_CODE (ImpressDocument, impress_document, G_TYPE_OBJECT,
- { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT,
- impress_document_document_iface_init);
- G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS,
- impress_document_document_thumbnails_iface_init);
- });
-
-/* Renderer */
-static void
-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)
-{
- int x, y, nx, ny;
- int ax, bx, cx, ay, by, cy;
- double t, t2, t3;
-
- x = x0;
- y = y0;
-
- cx = 3 * (x1 - x0);
- bx = 3 * (x2 - x1) - cx;
- ax = x3 - x0 - cx - bx;
- cy = 3 * (y1 - y0);
- by = 3 * (y2 - y1) - cy;
- ay = y3 - y0 - cy - by;
-
- for (t = 0; t < 1; t += 0.01) {
- t2 = t * t;
- t3 = t2 * t;
- nx = ax * t3 + bx * t2 + cx * t + x0;
- ny = ay * t3 + by * t2 + cy * t + y0;
- gdk_draw_line (d, gc, x, y, nx, ny);
- x = nx;
- y = ny;
- }
-}
-
-static void
-imp_render_get_size(void *drw_data, int *w, int *h)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- gdk_drawable_get_size(impress_document->pixmap, w, h);
-}
-
-static void
-imp_render_set_fg_color(void *drw_data, ImpColor *color)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
- GdkColor c;
-
- c.red = color->red;
- c.green = color->green;
- c.blue = color->blue;
- gdk_gc_set_rgb_fg_color(impress_document->gc, &c);
-}
-
-static void
-imp_render_draw_line(void *drw_data, int x1, int y1, int x2, int y2)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- gdk_draw_line(impress_document->pixmap, impress_document->gc, x1, y1, x2, y2);
-}
-
-static void
-imp_render_draw_rect(void *drw_data, int fill, int x, int y, int w, int h)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- gdk_draw_rectangle(impress_document->pixmap, impress_document->gc, fill, x, y, w, h);
-}
-
-static void
-imp_render_draw_polygon(void *drw_data, int fill, ImpPoint *pts, int nr_pts)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- gdk_draw_polygon(impress_document->pixmap, impress_document->gc, fill, (GdkPoint *)pts, nr_pts);
-}
-
-static void
-imp_render_draw_arc(void *drw_data, int fill, int x, int y, int w, int h, int sa, int ea)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- gdk_draw_arc(impress_document->pixmap, impress_document->gc, fill, x, y, w, h, sa * 64, ea * 64);
-}
-
-static void
-imp_render_draw_bezier(void *drw_data, int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
-
- imp_render_draw_bezier_real (impress_document->pixmap, impress_document->gc, x0, y0, x1, y1, x2, y2, x3, y3);
-}
-
-static void *
-imp_render_open_image(void *drw_data, const unsigned char *pix, size_t size)
-{
- GdkPixbufLoader *gpl;
- GdkPixbuf *pb;
-
- gpl = gdk_pixbuf_loader_new();
- gdk_pixbuf_loader_write(gpl, pix, size, NULL);
- gdk_pixbuf_loader_close(gpl, NULL);
- pb = gdk_pixbuf_loader_get_pixbuf(gpl);
- return pb;
-}
-
-static void
-imp_render_get_image_size(void *drw_data, void *img_data, int *w, int *h)
-{
- GdkPixbuf *pb = (GdkPixbuf *) img_data;
-
- *w = gdk_pixbuf_get_width(pb);
- *h = gdk_pixbuf_get_height(pb);
-}
-
-static void *
-imp_render_scale_image(void *drw_data, void *img_data, int w, int h)
-{
- GdkPixbuf *pb = (GdkPixbuf *) img_data;
-
- return gdk_pixbuf_scale_simple(pb, w, h, GDK_INTERP_BILINEAR);
-}
-
-static void
-imp_render_draw_image(void *drw_data, void *img_data, int x, int y, int w, int h)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
- GdkPixbuf *pb = (GdkPixbuf *) img_data;
-
- gdk_draw_pixbuf(impress_document->pixmap, impress_document->gc, pb, 0, 0, x, y, w, h, GDK_RGB_DITHER_NONE, 0, 0);
-}
-
-static void
-imp_render_close_image(void *drw_data, void *img_data)
-{
- GdkPixbuf *pb = (GdkPixbuf *) img_data;
-
- g_object_unref(G_OBJECT(pb));
-}
-
-static char *
-imp_render_markup(const char *text, size_t len, int styles, int size)
-{
- double scr_mm, scr_px, dpi;
- char *esc;
- char *ret;
- int sz;
-
- scr_mm = gdk_screen_get_height_mm(gdk_screen_get_default());
- scr_px = gdk_screen_get_height(gdk_screen_get_default());
- dpi = (scr_px / scr_mm) * 25.4;
- sz = (int) ((double) size * 72.0 * PANGO_SCALE / dpi);
- esc = g_markup_escape_text(text, len);
- ret = g_strdup_printf("<span size ='%d'>%s</span>", sz, esc);
- g_free(esc);
- return ret;
-}
-
-static void
-imp_render_get_text_size(void *drw_data, const char *text, size_t len, int size, int styles, int *w, int *h)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
- PangoLayout *lay;
- int pw, ph;
- char *m;
-
- g_return_if_fail (impress_document->pango_ctx != NULL);
-
- lay = pango_layout_new(impress_document->pango_ctx);
- m = imp_render_markup(text, len, styles, size);
- pango_layout_set_markup(lay, m, strlen(m));
- pango_layout_get_size(lay, &pw, &ph);
- g_object_unref(lay);
- g_free(m);
- *w = pw / PANGO_SCALE;
- *h = ph / PANGO_SCALE;
-}
-
-static void
-imp_render_draw_text(void *drw_data, int x, int y, const char *text, size_t len, int size, int styles)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (drw_data);
- PangoLayout *lay;
- char *m;
-
- g_return_if_fail (impress_document->pango_ctx != NULL);
-
- lay = pango_layout_new(impress_document->pango_ctx);
- m = imp_render_markup(text, len, styles, size);
- pango_layout_set_markup(lay, m, strlen(m));
- gdk_draw_layout(impress_document->pixmap, impress_document->gc, x, y, lay);
- g_object_unref(lay);
- g_free(m);
-}
-
-static const ImpDrawer imp_render_functions = {
- imp_render_get_size,
- imp_render_set_fg_color,
- imp_render_draw_line,
- imp_render_draw_rect,
- imp_render_draw_polygon,
- imp_render_draw_arc,
- imp_render_draw_bezier,
- imp_render_open_image,
- imp_render_get_image_size,
- imp_render_scale_image,
- imp_render_draw_image,
- imp_render_close_image,
- imp_render_get_text_size,
- imp_render_draw_text
-};
-
-/* Document interface */
-static gboolean
-impress_document_load (EvDocument *document,
- const char *uri,
- GError **error)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
- gchar *filename;
- ImpDoc *imp;
- int err;
-
- /* FIXME: Could we actually load uris ? */
- filename = g_filename_from_uri (uri, NULL, error);
- if (!filename)
- {
- //FIXME
- //g_error_set ();
- return FALSE;
- }
-
- imp = imp_open (filename, &err);
-
- if (!imp)
- {
- //FIXME translate the err, set error
- g_free (filename);
- return FALSE;
- }
- impress_document->imp = imp;
-
- return TRUE;
-}
-
-static gboolean
-impress_document_save (EvDocument *document,
- const char *uri,
- GError **error)
-{
- return FALSE;
-}
-
-static int
-impress_document_get_n_pages (EvDocument *document)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
-
- g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), 0);
- g_return_val_if_fail (impress_document->imp != NULL, 0);
-
- return imp_nr_pages (impress_document->imp);
-}
-
-static void
-impress_document_get_page_size (EvDocument *document,
- int page,
- double *width,
- double *height)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
-
- g_return_if_fail (IMPRESS_IS_DOCUMENT (document));
- g_return_if_fail (impress_document->imp != NULL);
-
- //FIXME
- *width = PAGE_WIDTH;
- *height = PAGE_HEIGHT;
-}
-
-static gboolean
-imp_render_get_from_drawable (ImpressDocument *impress_document)
-{
- ImpPage *page;
-
- page = imp_get_page (impress_document->imp, impress_document->pagenum);
-
- g_return_val_if_fail (page != NULL, FALSE);
-
- imp_context_set_page (impress_document->ctx, page);
- imp_render (impress_document->ctx, impress_document);
-
- impress_document->pixbuf = gdk_pixbuf_get_from_drawable (NULL,
- GDK_DRAWABLE (impress_document->pixmap),
- NULL,
- 0, 0,
- 0, 0,
- PAGE_WIDTH, PAGE_HEIGHT);
- g_cond_broadcast (impress_document->cond);
- return FALSE;
-}
-
-static GdkPixbuf *
-impress_document_render_pixbuf (EvDocument *document,
- EvRenderContext *rc)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (document);
- GdkPixbuf *scaled_pixbuf;
-
- g_return_val_if_fail (IMPRESS_IS_DOCUMENT (document), 0);
- g_return_val_if_fail (impress_document->imp != NULL, 0);
-
- impress_document->pagenum = rc->page;
-
- g_mutex_lock (impress_document->mutex);
- impress_document->cond = g_cond_new ();
-
- g_idle_add ((GSourceFunc) imp_render_get_from_drawable, impress_document);
-
- g_cond_wait (impress_document->cond, impress_document->mutex);
- g_cond_free (impress_document->cond);
- g_mutex_unlock (impress_document->mutex);
-
- scaled_pixbuf = gdk_pixbuf_scale_simple (impress_document->pixbuf,
- PAGE_WIDTH * rc->scale,
- PAGE_HEIGHT * rc->scale,
- GDK_INTERP_BILINEAR);
- gdk_pixbuf_unref (impress_document->pixbuf);
- impress_document->pixbuf = NULL;
-
- return scaled_pixbuf;
-}
-
-static void
-impress_document_finalize (GObject *object)
-{
- ImpressDocument *impress_document = IMPRESS_DOCUMENT (object);
-
- g_mutex_free (impress_document->mutex);
-
- imp_close (impress_document->imp);
- imp_delete_context (impress_document->ctx);
- g_free (impress_document->pango_ctx);
- g_object_unref (G_OBJECT (impress_document->pixmap));
- g_object_unref (impress_document->gc);
-
- G_OBJECT_CLASS (impress_document_parent_class)->finalize (object);
-}
-
-static void
-impress_document_class_init (ImpressDocumentClass *klass)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-
- gobject_class->finalize = impress_document_finalize;
-}
-
-static gboolean
-impress_document_can_get_text (EvDocument *document)
-{
- return FALSE;
-}
-
-static EvDocumentInfo *
-impress_document_get_info (EvDocument *document)
-{
- EvDocumentInfo *info;
-
- info = g_new0 (EvDocumentInfo, 1);
- info->fields_mask = 0;
-
- return info;
-}
-
-static void
-impress_document_document_iface_init (EvDocumentIface *iface)
-{
- iface->load = impress_document_load;
- iface->save = impress_document_save;
- iface->can_get_text = impress_document_can_get_text;
- iface->get_n_pages = impress_document_get_n_pages;
- iface->get_page_size = impress_document_get_page_size;
- iface->render_pixbuf = impress_document_render_pixbuf;
- iface->get_info = impress_document_get_info;
-}
-
-static GdkPixbuf *
-impress_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document,
- gint page,
- gint rotation,
- gint size,
- gboolean border)
-{
- GdkPixbuf *pixbuf = NULL;
- gdouble w, h;
- EvRenderContext *rc;
-
- impress_document_get_page_size (EV_DOCUMENT (document),
- page,
- &w, &h);
-
- rc = ev_render_context_new (rotation, page, size/w);
- pixbuf = impress_document_render_pixbuf (EV_DOCUMENT (document), rc);
- g_object_unref (G_OBJECT (rc));
-
- if (border)
- {
- GdkPixbuf *tmp_pixbuf = pixbuf;
- pixbuf = ev_document_misc_get_thumbnail_frame (-1, -1, 0, tmp_pixbuf);
- g_object_unref (tmp_pixbuf);
- }
-
- return pixbuf;
-}
-
-static void
-impress_document_thumbnails_get_dimensions (EvDocumentThumbnails *document,
- gint page,
- gint suggested_width,
- gint *width,
- gint *height)
-{
- gdouble page_ratio;
- gdouble w, h;
-
- impress_document_get_page_size (EV_DOCUMENT (document),
- page,
- &w, &h);
- g_return_if_fail (w > 0);
- page_ratio = h/w;
- *width = suggested_width;
- *height = (gint) (suggested_width * page_ratio);
-}
-
-static void
-impress_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface)
-{
- iface->get_thumbnail = impress_document_thumbnails_get_thumbnail;
- iface->get_dimensions = impress_document_thumbnails_get_dimensions;
-}
-
-static void
-impress_document_init (ImpressDocument *impress_document)
-{
- GdkWindow *window;
-
- impress_document->mutex = g_mutex_new ();
- impress_document->ctx = imp_create_context(&imp_render_functions);
-
- window = gdk_screen_get_root_window (gdk_screen_get_default ());
-
- impress_document->pixmap = gdk_pixmap_new (window,
- PAGE_WIDTH, PAGE_HEIGHT, -1);
- impress_document->gc = gdk_gc_new (impress_document->pixmap);
- impress_document->pango_ctx = gdk_pango_context_get ();
-}
-
-/*
- * vim: sw=2 ts=8 cindent noai bs=2
- */
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff