2 * Copyright (C) 20018 - The Geeqie Team
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 of the License, or
9 * (at your option) any later version.
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 along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include "image-load-pdf.h"
27 #include <gdk-pixbuf/gdk-pixbuf.h>
29 #include <glib-object.h>
34 #include "image-load.h"
39 struct ImageLoaderPDF {
40 ImageLoaderBackendCbAreaUpdated area_updated_cb;
41 ImageLoaderBackendCbSize size_cb;
42 ImageLoaderBackendCbAreaPrepared area_prepared_cb;
45 guint requested_width;
46 guint requested_height;
52 gboolean image_loader_pdf_write(gpointer loader, const guchar *buf, gsize &chunk_size, gsize count, GError **)
54 auto ld = static_cast<ImageLoaderPDF *>(loader);
55 GError *poppler_error = nullptr;
57 PopplerDocument *document;
60 cairo_surface_t *surface;
65 document = poppler_document_new_from_data((gchar *)(buf), count, nullptr, &poppler_error);
69 log_printf("warning: pdf reader error: %s\n", poppler_error->message);
70 g_error_free(poppler_error);
74 page_total = poppler_document_get_n_pages(document);
77 ld->page_total = page_total;
80 page = poppler_document_get_page(document, ld->page_num);
81 poppler_page_get_size(page, &width, &height);
83 surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
84 cr = cairo_create(surface);
85 poppler_page_render(page, cr);
87 cairo_set_operator(cr, CAIRO_OPERATOR_DEST_OVER);
88 cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
91 ld->pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, width, height);
92 ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
95 cairo_surface_destroy(surface);
101 g_object_unref(document);
106 gpointer image_loader_pdf_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
108 auto loader = g_new0(ImageLoaderPDF, 1);
109 loader->area_updated_cb = area_updated_cb;
110 loader->size_cb = size_cb;
111 loader->area_prepared_cb = area_prepared_cb;
113 loader->page_num = 0;
117 void image_loader_pdf_set_size(gpointer loader, int width, int height)
119 auto ld = static_cast<ImageLoaderPDF *>(loader);
120 ld->requested_width = width;
121 ld->requested_height = height;
124 GdkPixbuf* image_loader_pdf_get_pixbuf(gpointer loader)
126 auto ld = static_cast<ImageLoaderPDF *>(loader);
130 gchar* image_loader_pdf_get_format_name(gpointer)
132 return g_strdup("pdf");
135 gchar** image_loader_pdf_get_format_mime_types(gpointer)
137 static const gchar *mime[] = {"application/pdf", nullptr};
138 return g_strdupv(const_cast<gchar **>(mime));
141 void image_loader_pdf_set_page_num(gpointer loader, gint page_num)
143 auto ld = static_cast<ImageLoaderPDF *>(loader);
145 ld->page_num = page_num;
148 gint image_loader_pdf_get_page_total(gpointer loader)
150 auto ld = static_cast<ImageLoaderPDF *>(loader);
152 return ld->page_total;
155 gboolean image_loader_pdf_close(gpointer, GError **)
160 void image_loader_pdf_abort(gpointer loader)
162 auto ld = static_cast<ImageLoaderPDF *>(loader);
166 void image_loader_pdf_free(gpointer loader)
168 auto ld = static_cast<ImageLoaderPDF *>(loader);
169 if (ld->pixbuf) g_object_unref(ld->pixbuf);
175 void image_loader_backend_set_pdf(ImageLoaderBackend *funcs)
177 funcs->loader_new = image_loader_pdf_new;
178 funcs->set_size = image_loader_pdf_set_size;
179 funcs->write = image_loader_pdf_write;
180 funcs->get_pixbuf = image_loader_pdf_get_pixbuf;
181 funcs->close = image_loader_pdf_close;
182 funcs->abort = image_loader_pdf_abort;
183 funcs->free = image_loader_pdf_free;
184 funcs->get_format_name = image_loader_pdf_get_format_name;
185 funcs->get_format_mime_types = image_loader_pdf_get_format_mime_types;
186 funcs->set_page_num = image_loader_pdf_set_page_num;
187 funcs->get_page_total = image_loader_pdf_get_page_total;
191 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */