void
histogram_imager_save_image_file (HistogramImager *self, const gchar *filename, GError **error)
{
/* Save our current image to a .PNG file */
gchar *params;
histogram_imager_update_image (self);
/* Save our current parameters in a tEXt chunk, using a format that
* is both human-readable and easy to load parameters from automatically.
*/
params = parameter_holder_save_string (PARAMETER_HOLDER(self));
gdk_pixbuf_save (self->image, filename, "png", error, "tEXt::fyre_params", params, NULL);
g_free (params);
}
static HistoryNode* history_node_new (HistogramImager* map)
{
HistoryNode* self = g_new0(HistoryNode, 1);
gint width, height;
g_get_current_time(&self->timestamp);
self->params = parameter_holder_save_string(PARAMETER_HOLDER(map));
/* Use the normal icon size plus a little extra */
gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &width, &height);
width *= 1.75;
height *= 1.75;
self->thumbnail = histogram_imager_make_thumbnail(map, width, height);
return self;
}
ScreenSaver* screensaver_new(IterativeMap *map, Animation *animation) {
ScreenSaver *self = SCREENSAVER(g_object_new(screensaver_get_type(), NULL));
int i;
AnimationIter iter;
gchar* common_parameters;
self->animation = ANIMATION(g_object_ref(animation));
self->map = ITERATIVE_MAP(g_object_ref(map));
self->view = g_object_ref(histogram_view_new(HISTOGRAM_IMAGER(self->map)));
/* Allocate and interpolate all frames */
self->framerate = 10;
self->num_frames = animation_get_length(self->animation) * self->framerate;
self->frame_renders = g_new0(IterativeMap*, self->num_frames);
self->frame_parameters = g_new0(ParameterHolderPair, self->num_frames);
self->current_frame = 0;
common_parameters = parameter_holder_save_string(PARAMETER_HOLDER(map));
animation_iter_seek(animation, &iter, 0);
for (i=0; i<self->num_frames; i++) {
self->frame_renders[i] = ITERATIVE_MAP(de_jong_new());
parameter_holder_load_string(PARAMETER_HOLDER(self->frame_renders[i]), common_parameters);
self->frame_parameters[i].a = PARAMETER_HOLDER(de_jong_new());
animation_iter_load(animation, &iter, self->frame_parameters[i].a);
animation_iter_seek_relative(animation, &iter, 1/self->framerate);
}
for (i=0; i<self->num_frames-1; i++)
self->frame_parameters[i].b = self->frame_parameters[i+1].a;
self->frame_parameters[self->num_frames-1].b = self->frame_parameters[self->num_frames-1].a;
g_free(common_parameters);
self->direction = 1;
screensaver_start(self);
return self;
}
