107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/*
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* Copyright 2008 Rob Kendrick <rjek@netsurf-browser.org>
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* Copyright 2008 Sean Fox <dyntryx@gmail.com>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#ifdef WITH_GIF
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#include <libnsgif.h>
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#endif
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#include "utils/log.h"
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#include "gtk/throbber.h"
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#include "gtk/bitmap.h"
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struct nsgtk_throbber *nsgtk_throbber = NULL;
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/**
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* Creates the throbber using a PNG for each frame. The number of frames must
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* be at least two. The first frame is the inactive frame, others are the
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* active frames.
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*
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* \param frames The number of frames. Must be at least two.
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* \param ... Filenames of PNGs containing frames.
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* \return true on success.
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*/
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bool nsgtk_throbber_initialise_from_png(const int frames, char** frame_files)
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{
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GError *err = NULL;
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struct nsgtk_throbber *throb; /**< structure we generate */
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bool errors_when_loading = false; /**< true if a frame failed */
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int frame_loop;
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if (frames < 2) {
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/* we need at least two frames - one for idle, one for active */
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LOG(("Insufficent number of frames in throbber animation!"));
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LOG(("(called with %d frames, where 2 is a minimum.)",
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frames));
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return false;
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}
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throb = malloc(sizeof(*throb));
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if (throb == NULL)
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return false;
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throb->nframes = frames;
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throb->framedata = malloc(sizeof(GdkPixbuf *) * throb->nframes);
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if (throb->framedata == NULL) {
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free(throb);
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return false;
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}
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for (frame_loop = 0; frame_loop < frames; frame_loop++) {
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throb->framedata[frame_loop] = gdk_pixbuf_new_from_file(frame_files[frame_loop], &err);
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if (err != NULL) {
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LOG(("Error when loading %s: %s (%d)",
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frame_files[frame_loop], err->message, err->code));
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throb->framedata[frame_loop] = NULL;
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errors_when_loading = true;
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}
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}
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if (errors_when_loading == true) {
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for (frame_loop = 0; frame_loop < frames; frame_loop++) {
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if (throb->framedata[frame_loop] != NULL)
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g_object_unref(throb->framedata[frame_loop]);
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}
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free(throb->framedata);
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free(throb);
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return false;
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}
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nsgtk_throbber = throb;
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return true;
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}
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void nsgtk_throbber_finalise(void)
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{
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int i;
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for (i = 0; i < nsgtk_throbber->nframes; i++)
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g_object_unref(nsgtk_throbber->framedata[i]);
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free(nsgtk_throbber->framedata);
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free(nsgtk_throbber);
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nsgtk_throbber = NULL;
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}
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