netsurf/gtk/throbber.c
Vincent Sanders c105738fa3 Change LOG() macro to be varadic
This changes the LOG macro to be varadic removing the need for all
callsites to have double bracketing and allows for future improvement
on how we use the logging macros.

The callsites were changed with coccinelle and the changes checked by
hand. Compile tested for several frontends but not all.

A formatting annotation has also been added which allows the compiler
to check the parameters and types passed to the logging.
2015-05-28 16:08:46 +01:00

106 lines
2.9 KiB
C

/*
* Copyright 2008 Rob Kendrick <rjek@netsurf-browser.org>
* Copyright 2008 Sean Fox <dyntryx@gmail.com>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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; version 2 of the License.
*
* NetSurf 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#ifdef WITH_GIF
#include <libnsgif.h>
#endif
#include "utils/log.h"
#include "gtk/throbber.h"
#include "gtk/bitmap.h"
struct nsgtk_throbber *nsgtk_throbber = NULL;
/**
* Creates the throbber using a PNG for each frame.
*
* The number of frames must be at least two. The first frame is the
* inactive frame, others are the active frames.
*
* \param frames The number of frames. Must be at least two.
* \param frame_files Filenames of PNGs containing frames.
* \return true on success.
*/
bool nsgtk_throbber_initialise_from_png(const int frames, char** frame_files)
{
GError *err = NULL;
struct nsgtk_throbber *throb; /**< structure we generate */
bool errors_when_loading = false; /**< true if a frame failed */
int frame_loop;
if (frames < 2) {
/* we need at least two frames - one for idle, one for active */
LOG("Insufficent number of frames in throbber animation!");
LOG("(called with %d frames, where 2 is a minimum.)", frames);
return false;
}
throb = malloc(sizeof(*throb));
if (throb == NULL)
return false;
throb->nframes = frames;
throb->framedata = malloc(sizeof(GdkPixbuf *) * throb->nframes);
if (throb->framedata == NULL) {
free(throb);
return false;
}
for (frame_loop = 0; frame_loop < frames; frame_loop++) {
throb->framedata[frame_loop] = gdk_pixbuf_new_from_file(frame_files[frame_loop], &err);
if (err != NULL) {
LOG("Error when loading %s: %s (%d)", frame_files[frame_loop], err->message, err->code);
throb->framedata[frame_loop] = NULL;
errors_when_loading = true;
}
}
if (errors_when_loading == true) {
for (frame_loop = 0; frame_loop < frames; frame_loop++) {
if (throb->framedata[frame_loop] != NULL)
g_object_unref(throb->framedata[frame_loop]);
}
free(throb->framedata);
free(throb);
return false;
}
nsgtk_throbber = throb;
return true;
}
void nsgtk_throbber_finalise(void)
{
int i;
for (i = 0; i < nsgtk_throbber->nframes; i++)
g_object_unref(nsgtk_throbber->framedata[i]);
free(nsgtk_throbber->framedata);
free(nsgtk_throbber);
nsgtk_throbber = NULL;
}