/**
* return number of frames per second and duration in msec
*/
gint
pgpug_pixbuf_animation_get_detail (GdkPixbufAnimation *anim, gint *frames_count, gint *duration)
{
//FIXME: there should be a better way to get frames count from animation
*frames_count = 0;
*duration = 0;
if (gdk_pixbuf_animation_is_static_image (anim)){
(*frames_count)++;
return;
}
GTimeVal start_time = {0, 0};
GdkPixbufAnimationIter *iter = gdk_pixbuf_animation_get_iter (anim, &start_time);
GdkPixbuf *cur_frame, *first_frame = gdk_pixbuf_animation_iter_get_pixbuf (iter);
int delay_time = gdk_pixbuf_animation_iter_get_delay_time (iter);
while (delay_time > 0){
g_time_val_add (&start_time, delay_time*1000);
gboolean need_upd = gdk_pixbuf_animation_iter_advance (iter, &start_time);
if (need_upd){
(*frames_count)++;
*duration += delay_time;
}
cur_frame = gdk_pixbuf_animation_iter_get_pixbuf (iter);
if (!need_upd || cur_frame == first_frame) {
delay_time = -1;
}
}
g_object_unref (iter);
}
static void
img_cell_renderer_anim_render( GtkCellRenderer *cell,
GdkDrawable *window,
GtkWidget *widget,
GdkRectangle *background_a,
GdkRectangle *cell_a,
GdkRectangle *expose_a,
GtkCellRendererState state )
{
ImgCellRendererAnimPrivate *priv;
GdkPixbufAnimationIter *iter;
GdkPixbuf *pixbuf;
cairo_t *cr;
GdkRectangle rect,
draw_rect;
priv = IMG_CELL_RENDERER_ANIM_GET_PRIVATE ( cell );
/* Get image size */
img_cell_renderer_anim_get_size( cell, widget, cell_a, &rect.x,
&rect.y, &rect.width, &rect.height );
rect.x += cell_a->x + cell->xpad;
rect.y += cell_a->y + cell->ypad;
rect.width -= 2 * cell->xpad;
rect.height -= 2 * cell->ypad;
/* Check for overlaping */
if( ! gdk_rectangle_intersect( cell_a, &rect, &draw_rect ) ||
! gdk_rectangle_intersect( expose_a, &draw_rect, &draw_rect ) )
return;
/* Draw indicators */
cr = gdk_cairo_create( window );
/* Draw the current frame of the GdkPixbufAnimation */
iter = g_object_get_data( G_OBJECT( priv->anim ), "iter" );
if( ! iter )
{
gint delay;
/* Initialiize iter */
iter = gdk_pixbuf_animation_get_iter( priv->anim, NULL );
g_object_set_data_full( G_OBJECT( priv->anim ), "iter", iter,
(GDestroyNotify)g_object_unref );
/* Install timeout */
delay = gdk_pixbuf_animation_iter_get_delay_time( iter );
gdk_threads_add_timeout( delay, (GSourceFunc)cb_timeout, iter );
}
g_object_set_data( G_OBJECT( iter ), "widget", widget );
pixbuf = gdk_pixbuf_animation_iter_get_pixbuf( iter );
gdk_cairo_set_source_pixbuf( cr, pixbuf, rect.x, rect.y );
gdk_cairo_rectangle( cr, &draw_rect );
cairo_fill( cr );
cairo_destroy( cr );
}
/*
TODO: have image_fetcher tell us if it was a 404 and handle
that image here rather than there.
*/
void Image::on_image(const Glib::RefPtr<Gdk::PixbufLoader> &loader) {
if (loader) {
unscaled_image.reset();
if (post->is_gif()) {
unscaled_animation = loader->get_animation();
if (unscaled_animation->is_static_image()) {
unscaled_image = unscaled_animation->get_static_image();
unscaled_animation.reset();
} else {
if (!animation_iter) {
animation_time.assign_current_time();
animation_iter = Glib::wrap(gdk_pixbuf_animation_get_iter(unscaled_animation->gobj(), &animation_time));
animation_timeout = Glib::signal_timeout().connect(sigc::mem_fun(*this, &Image::on_animation_timeout),
animation_iter->get_delay_time());
}
unscaled_image.reset();
unscaled_image = animation_iter->get_pixbuf();
}
} else {
unscaled_image = loader->get_pixbuf();
}
if (G_UNLIKELY(!unscaled_image)) {
g_error("Received pixbuf image is null");
}
image->set(unscaled_image);
image->show();
show_all();
image->queue_draw();
refresh_size_request();
if (is_changing_state) {
is_changing_state = false;
set_expand_state();
}
if (image_state == NONE)
set_thumb_state();
} else {
std::cerr << "Warning: Horizon::Image got invalid PixbufLoader for"
<< " image" << std::endl;
}
am_fetching_image = false;
}
bool Image::on_image_draw(const Cairo::RefPtr< Cairo::Context > &) {
if (unscaled_animation) {
if (!animation_iter) {
animation_time.assign_current_time();
animation_iter = Glib::wrap(gdk_pixbuf_animation_get_iter(unscaled_animation->gobj(), &animation_time));
unscaled_image.reset();
unscaled_image = animation_iter->get_pixbuf();
animation_timeout = Glib::signal_timeout().connect(sigc::mem_fun(*this, &Image::on_animation_timeout),
animation_iter->get_delay_time());
}
}
return false;
}
static gboolean ygtk_image_advance_frame_cb (gpointer data)
{
YGtkImage *image = (YGtkImage *) data;
struct _YGtkImageAnimation *animation = image->animation;
if (!animation->frame) // no frame yet loaded
animation->frame = gdk_pixbuf_animation_get_iter (animation->pixbuf, NULL);
else
if (gdk_pixbuf_animation_iter_advance (animation->frame, NULL))
gtk_widget_queue_draw (GTK_WIDGET (image));
// shedule next frame
int delay = gdk_pixbuf_animation_iter_get_delay_time (animation->frame);
if (delay != -1)
animation->timeout_id = g_timeout_add (delay, ygtk_image_advance_frame_cb, data);
return FALSE;
}
bool wxAnimationCtrl::Play()
{
if (m_anim == NULL)
return false;
// init the iterator and start a one-shot timer
ResetIter();
m_iter = gdk_pixbuf_animation_get_iter (m_anim, NULL);
m_bPlaying = true;
// gdk_pixbuf_animation_iter_get_delay_time() may return -1 which means
// that the timer should not start
int n = gdk_pixbuf_animation_iter_get_delay_time(m_iter);
if (n >= 0)
m_timer.Start(n, true);
return true;
}
/* prepare frame information and register other callbacks */
static void
callback_area_prepared_anim (GdkPixbufLoader* loader)
{
GdkPixbufAnimation *anim;
FrameData* frame_copy = g_new (FrameData, 1);
g_signal_connect (loader, "area-updated",
(GCallback) callback_area_updated_anim, (gpointer) frame_copy);
g_signal_connect (loader, "closed",
(GCallback) callback_closed_anim, (gpointer) frame_copy);
frame_copy->time.tv_sec = frame_copy->time.tv_usec = 0; /* some time */
anim = gdk_pixbuf_loader_get_animation (loader);
frame_copy->iter = gdk_pixbuf_animation_get_iter (anim, &frame_copy->time);
frame_copy->pixbuf = gdk_pixbuf_copy (gdk_pixbuf_animation_iter_get_pixbuf (frame_copy->iter));
update_currently_loaded_frame (frame_copy);
}
static GdkPixbufAnimation*
compose_animation_from_array (animation_param_entry **anim_array, gint array_len, gint pix_size)
{
GdkPixbufSimpleAnim *result = NULL;
gint frames = 1, duration = 0, duration_p, frames_p;
/* calculate frames count as multiplication of all frames and duration as max */
gint i;
GTimeVal start_time = {0, 0};
for (i = 0; i<array_len; i++){
/* initialize iterators for each animation*/
animation_param_entry *p_entry = anim_array[i];
p_entry->iter = gdk_pixbuf_animation_get_iter (p_entry->anim, &start_time);
frames_p = duration_p = 0;
pgpug_pixbuf_animation_get_detail (p_entry->anim, &frames_p, &duration_p);
duration = duration < duration_p ? duration_p : duration;
frames *= frames_p;
}
float fps = duration > 0 ? frames * 1000 / duration : 1;
gint frame_change_time = duration / frames;
DEBG_MSG ("Fps: %f. frame change time :%dmsec", fps,frame_change_time);
result = gdk_pixbuf_simple_anim_new (pix_size, pix_size, fps);
gint elapsed_time = 0, frames_counter = 1;
while (elapsed_time <= duration && frames_counter++ <= frames){
animation_param_entry *p_entry = anim_array[0];
GdkPixbuf *base_pixbuf = gdk_pixbuf_copy (gdk_pixbuf_animation_iter_get_pixbuf (p_entry->iter));
g_time_val_add (&start_time, frame_change_time * 1000);
gdk_pixbuf_animation_iter_advance (p_entry->iter, &start_time);
for (i = 1; i < array_len; i++) {
p_entry = anim_array[i];
GdkPixbuf *src_pixbuf = gdk_pixbuf_animation_iter_get_pixbuf (p_entry->iter);
gint x_offset, y_offset, src_size;
src_size = gdk_pixbuf_get_width (src_pixbuf);
pgpug_pixbuf_calculate_composition_offset (pix_size, src_size, p_entry->pos, &x_offset, &y_offset);
gdk_pixbuf_composite (src_pixbuf,
base_pixbuf,
x_offset, y_offset,
src_size, src_size,
x_offset, y_offset,
1.0f, 1.0f,
GDK_INTERP_BILINEAR, 255);
gboolean res;
res = gdk_pixbuf_animation_iter_advance (p_entry->iter, &start_time);
}
gdk_pixbuf_simple_anim_add_frame (result, base_pixbuf);
elapsed_time += frame_change_time;
}
gdk_pixbuf_simple_anim_set_loop (result, TRUE);
for (i=0;i<array_len;i++){
g_object_unref (anim_array[i]->iter);
}
return GDK_PIXBUF_ANIMATION (result);
}
static GdkPixbuf *
_gdk_pixbuf_new_from_uri_at_scale (const char *uri,
gint size,
GError **error)
{
gboolean result;
guchar buffer[LOAD_BUFFER_SIZE];
gssize bytes_read;
GdkPixbufLoader *loader = NULL;
GdkPixbuf *pixbuf;
GdkPixbufAnimation *animation;
GdkPixbufAnimationIter *iter;
gboolean has_frame;
SizePrepareContext info;
GFile *file;
GInputStream *input_stream;
g_return_val_if_fail (uri != NULL, NULL);
file = g_file_new_for_uri (uri);
input_stream = G_INPUT_STREAM (g_file_read (file, NULL, error));
if (input_stream == NULL) {
g_object_unref (file);
return NULL;
}
has_frame = FALSE;
result = FALSE;
while (!has_frame) {
bytes_read = g_input_stream_read (input_stream,
buffer,
sizeof (buffer),
NULL,
error);
if (bytes_read == -1) {
break;
}
result = TRUE;
if (bytes_read == 0) {
break;
}
if (loader == NULL) {
loader = create_loader (file, buffer, bytes_read);
if (1 <= size) {
info.size = size;
info.input_width = info.input_height = 0;
g_signal_connect (loader, "size-prepared", G_CALLBACK (size_prepared_cb), &info);
}
g_assert (loader != NULL);
}
if (!gdk_pixbuf_loader_write (loader,
(unsigned char *)buffer,
bytes_read,
error)) {
result = FALSE;
break;
}
animation = gdk_pixbuf_loader_get_animation (loader);
if (animation) {
iter = gdk_pixbuf_animation_get_iter (animation, NULL);
if (!gdk_pixbuf_animation_iter_on_currently_loading_frame (iter)) {
has_frame = TRUE;
}
g_object_unref (iter);
}
}
if (loader == NULL) {
/* This can happen if the above loop was exited due to the
* g_input_stream_read() call failing. */
result = FALSE;
} else if (*error != NULL) {
gdk_pixbuf_loader_close (loader, NULL);
result = FALSE;
} else if (gdk_pixbuf_loader_close (loader, error) == FALSE) {
if (!g_error_matches (*error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_INCOMPLETE_ANIMATION))
result = FALSE;
else
g_clear_error (error);
}
if (!result) {
g_clear_object (&loader);
g_input_stream_close (input_stream, NULL, NULL);
g_object_unref (input_stream);
g_object_unref (file);
return NULL;
}
g_input_stream_close (input_stream, NULL, NULL);
g_object_unref (input_stream);
g_object_unref (file);
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
if (pixbuf != NULL) {
g_object_ref (G_OBJECT (pixbuf));
g_object_set_data (G_OBJECT (pixbuf), "gnome-original-width",
GINT_TO_POINTER (info.input_width));
g_object_set_data (G_OBJECT (pixbuf), "gnome-original-height",
GINT_TO_POINTER (info.input_height));
}
g_object_unref (G_OBJECT (loader));
return pixbuf;
}
int main (int argc, char *argv[])
{
if(argc > 1 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "-H")))
{
printf("Ponies for Linux/GTK+ by rabbit\n");
printf("Command list:\n");
printf("No Parameters: Run with the settings used from last run\n");
printf("-h: Display this help\n");
printf("file path: Set new file path to look for pony gif files\n");
printf("ponyname: Sets to run one of the pony type listed\n");
return 0;
}
for(int i = 1; i < argc; i++)
if(*argv[i] == '/')
setPonyDirectory(argv[i]);
char* ponyDirectory = NULL;
char* ponyHomeFile = NULL;
ponyHomeFile = malloc((strlen(getenv("HOME"))+ 9) * sizeof(char));
if(!ponyHomeFile)
{
printf("Could not allocate memory for ponyHomeFile\n");
return 0;
}
strcpy(ponyHomeFile, getenv("HOME"));
strcat(ponyHomeFile,"/.ponies");
ponyDirectory = getPonyDirectory();
if(!ponyDirectory)
{
free(ponyHomeFile);
printf("Error locating pony directory\n");
return 0;
}
//Initialize GTK+ and set up loggers
GError* error = NULL;
g_log_set_handler ("Gtk", G_LOG_LEVEL_WARNING, (GLogFunc) gtk_false, NULL);
gtk_init (&argc, &argv);
g_log_set_handler ("Gtk", G_LOG_LEVEL_WARNING, g_log_default_handler, NULL);
//For command line commands later, require input on inital load
//Normally would close, but hard coded in for easier testing
int numberOfPonies = 0;
if(argc == 1)
{
//Read in from ~/.ponies file to find saved settings
FILE* ifp = NULL;
char buffer[256];
ifp = fopen(ponyHomeFile,"r");
if(!ifp)
{
free(ponyHomeFile);
free(ponyDirectory);
printf("Could not open file for reading\n");
return 0;
}
//fread(buffer, sizeof(char), 256, ifp);
while(fgets(buffer, 256, ifp))
if(buffer[0] != '\n')
numberOfPonies++;
fclose(ifp);
numberOfPonies--;//First line is directory
}
//Not default arguments
else
{
for(int i = 1; i < argc; i++)
{
if(*argv[i] == '/')
continue;
numberOfPonies++;
}
}
//Seed the randomizer
srand(time(0));
//Number of ponies
pony ponyArray[numberOfPonies];
char buffer[256];
FILE* ifp = NULL;
ifp = fopen(ponyHomeFile,"r");
if(!ifp)
{
printf("Could not open ~/.ponies\n");
free(ponyDirectory);
free(ponyHomeFile);
return 0;
}
fgets(buffer, 256, ifp);//throw away first line
//0 Ponies
if(!numberOfPonies)
{
free(ponyDirectory);
free(ponyHomeFile);
printf("No ponies in the ~/.ponies file! Add some ponies!\n");
printf("allowable ponies are: ");
for(int i = 0; i <= Zecora; i++)
printf("%s ", getDirectoryName(i));
return 0;
}
//Make pony windows
for( int i = 0; i < numberOfPonies; i++)
{
fgets(buffer, 256, ifp);
char* temp = NULL;
temp = strchr(buffer, '\n');
if(temp)
buffer[temp - buffer] = '\0';
ponyArray[i].name = ponyNameFromString(buffer);
ponyArray[i].direction = DirNone;
ponyArray[i].dragActive = 0;
ponyArray[i].speed = SpeedStopped;
ponyArray[i].animation = AnimIdle;
ponyArray[i].active = 1;
ponyArray[i].facing = FaceLeft;
//Create animation from file, default is idle_left
char* initialPicturePath;
initialPicturePath = malloc((strlen(ponyDirectory) +
strlen(getDirectoryName(ponyArray[i].name)) +
14) * sizeof(char));
if(!initialPicturePath)
{
printf("Unable to allocate memory for directory");
continue;
}
strcpy(initialPicturePath, ponyDirectory);
strcat(initialPicturePath, getDirectoryName(ponyArray[i].name));
strcat(initialPicturePath, "/idle_left.gif");
ponyArray[i].pictureanim = gdk_pixbuf_animation_new_from_file
(initialPicturePath, &error);
free(initialPicturePath);
ponyArray[i].image = gtk_image_new_from_animation(ponyArray[i].pictureanim);
ponyArray[i].pictureanimit = gdk_pixbuf_animation_get_iter
(ponyArray[i].pictureanim, NULL);
ponyArray[i].win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
//Resize everytime the gif updates
g_timeout_add(gdk_pixbuf_animation_iter_get_delay_time(ponyArray[i].
pictureanimit),(GSourceFunc)updateWinSize, &ponyArray[i]);
//Name the window the name of the pony being animated
gtk_window_set_title(GTK_WINDOW(ponyArray[i].win),
getPonyName(ponyArray[i].name));
//Size down the window before showing it
gtk_window_set_default_size(GTK_WINDOW(ponyArray[i].win),
gdk_pixbuf_animation_get_width(ponyArray[i].
pictureanim), gdk_pixbuf_animation_get_height
(ponyArray[i].pictureanim));
//Remove the titlebar
gtk_window_set_decorated(GTK_WINDOW(ponyArray[i].win), FALSE);
//Set up the signals
ponyArray[i].clickEventID = g_signal_connect(G_OBJECT(ponyArray[i].win),
"button_press_event", G_CALLBACK(click_event),
&ponyArray[i]);
ponyArray[i].enterEventID = g_signal_connect(G_OBJECT(ponyArray[i].win),
"enter-notify-event", G_CALLBACK(enter_event),
&ponyArray[i]);
ponyArray[i].leaveEventID = g_signal_connect(G_OBJECT(ponyArray[i].win),
"leave-notify-event", G_CALLBACK(enter_event),
&ponyArray[i]);
gtk_widget_add_events(ponyArray[i].win, GDK_BUTTON_PRESS_MASK);
gtk_container_add(GTK_CONTAINER(ponyArray[i].win), GTK_WIDGET(ponyArray[i].
image));
//Get rid of taskbar item
gtk_window_set_skip_taskbar_hint(GTK_WINDOW(ponyArray[i].win), TRUE);
//Make it so it can't be selected
gtk_window_set_accept_focus(GTK_WINDOW(ponyArray[i].win), FALSE);
gtk_widget_realize(ponyArray[i].win);
//Always on top
gtk_window_set_keep_above(GTK_WINDOW(ponyArray[i].win), TRUE);
updateWinSize(&ponyArray[i]);
if(error != NULL)
break;
}
free(ponyDirectory);
free(ponyHomeFile);
//Quit out if there were any errors and give a message
if( error != NULL)
{
printf("%s\n",error->message);
return 0;
}
//Make it transparent?
/*cr = gdk_cairo_create(win->window);
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0);
cairo_set_operator( cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
gtk_container_add(GTK_CONTAINER(win), GTK_WIDGET(image));*/
//Main loop
for( int i = 0; i < numberOfPonies; i++)
gtk_widget_show_all(ponyArray[i].win);
gtk_main();
return 0;
}
void gaym_gtkconv_update_thumbnail(GaimConversation * conv, struct fetch_thumbnail_data
*thumbnail_data)
{
GaimGtkConversation *gtkconv;
char filename[256];
FILE *file;
GError *err = NULL;
size_t len;
GdkPixbuf *buf;
GdkPixbuf *scale;
GdkPixmap *pm;
GdkBitmap *bm;
int scale_width, scale_height;
GaimAccount *account;
GaimPluginProtocolInfo *prpl_info = NULL;
g_return_if_fail(conv != NULL);
g_return_if_fail(GAIM_IS_GTK_CONVERSATION(conv));
g_return_if_fail(gaim_conversation_get_type(conv) == GAIM_CONV_CHAT);
gtkconv = GAIM_GTK_CONVERSATION(conv);
GaymChatIcon *icon_data = g_hash_table_lookup(icons, conv);
if (!thumbnail_data)
return;
if (!icon_data->show_icon)
return;
const char *data = thumbnail_data->pic_data;
len = thumbnail_data->pic_data_len;
account = gaim_conversation_get_account(conv);
if (account && account->gc)
prpl_info = GAIM_PLUGIN_PROTOCOL_INFO(account->gc->prpl);
if (icon_data->anim != NULL)
g_object_unref(G_OBJECT(icon_data->anim));
icon_data->anim = NULL;
if (icon_data->icon_timer != 0)
g_source_remove(icon_data->icon_timer);
icon_data->icon_timer = 0;
if (icon_data->iter != NULL)
g_object_unref(G_OBJECT(icon_data->iter));
icon_data->iter = NULL;
if (!gaim_prefs_get_bool
("/gaim/gtk/conversations/im/show_buddy_icons"))
return;
if (gaim_conversation_get_gc(conv) == NULL)
return;
/* this is such an evil hack, i don't know why i'm even considering
it. we'll do it differently when gdk-pixbuf-loader isn't leaky
anymore. */
/* gdk-pixbuf-loader was leaky? is it still? */
g_snprintf(filename, sizeof(filename),
"%s" G_DIR_SEPARATOR_S "gaimicon-%s.%d",
g_get_tmp_dir(), thumbnail_data->who, getpid());
if (!(file = g_fopen(filename, "wb")))
return;
fwrite(data, 1, len, file);
fclose(file);
icon_data->anim = gdk_pixbuf_animation_new_from_file(filename, &err);
/* make sure we remove the file as soon as possible */
g_unlink(filename);
if (err) {
gaim_debug(GAIM_DEBUG_ERROR, "gtkconv",
"Buddy icon error: %s\n", err->message);
g_error_free(err);
}
if (!icon_data->anim)
return;
if (gdk_pixbuf_animation_is_static_image(icon_data->anim)) {
icon_data->iter = NULL;
buf = gdk_pixbuf_animation_get_static_image(icon_data->anim);
} else {
icon_data->iter = gdk_pixbuf_animation_get_iter(icon_data->anim, NULL); /* LEAK
*/
buf = gdk_pixbuf_animation_iter_get_pixbuf(icon_data->iter);
}
get_icon_scale_size(icon_data->anim,
prpl_info ? &prpl_info->icon_spec : NULL,
&scale_width, &scale_height);
scale =
gdk_pixbuf_scale_simple(buf,
MAX(gdk_pixbuf_get_width(buf) *
scale_width /
gdk_pixbuf_animation_get_width
(icon_data->anim), 1),
MAX(gdk_pixbuf_get_height(buf) *
scale_height /
gdk_pixbuf_animation_get_height
(icon_data->anim), 1),
GDK_INTERP_NEAREST);
gdk_pixbuf_render_pixmap_and_mask(scale, &pm, &bm, 100);
g_object_unref(G_OBJECT(scale));
icon_data->event = gtk_event_box_new();
gtk_container_add(GTK_CONTAINER(icon_data->frame), icon_data->event);
gtk_widget_set_size_request(GTK_WIDGET(icon_data->frame), scale_width,
scale_height);
// g_signal_connect(G_OBJECT(icon_data->event), "button-press-event",
// G_CALLBACK(icon_menu), conv);
gtk_widget_show(icon_data->event);
icon_data->icon = gtk_image_new_from_pixmap(pm, bm);
gtk_container_add(GTK_CONTAINER(icon_data->event), icon_data->icon);
gtk_widget_show(icon_data->icon);
g_object_unref(G_OBJECT(pm));
if (bm)
g_object_unref(G_OBJECT(bm));
}
/**
* gnome_gdk_pixbuf_new_from_uri:
* @uri: the uri of an image
* @width: The width the image should have or -1 to not constrain the width
* @height: The height the image should have or -1 to not constrain the height
* @preserve_aspect_ratio: %TRUE to preserve the image's aspect ratio
*
* Loads a GdkPixbuf from the image file @uri points to, scaling it to the
* desired size. If you pass -1 for @width or @height then the value
* specified in the file will be used.
*
* When preserving aspect ratio, if both height and width are set the size
* is picked such that the scaled image fits in a width * height rectangle.
*
* Return value: The loaded pixbuf, or NULL on error
*
* Since: 2.14
**/
GdkPixbuf *
gnome_gdk_pixbuf_new_from_uri_at_scale (const char *uri,
gint width,
gint height,
gboolean preserve_aspect_ratio)
{
GnomeVFSResult result;
char buffer[LOAD_BUFFER_SIZE];
GnomeVFSFileSize bytes_read;
GdkPixbufLoader *loader;
GdkPixbuf *pixbuf;
GdkPixbufAnimation *animation;
GdkPixbufAnimationIter *iter;
gboolean has_frame;
SizePrepareContext info;
GFile *file;
GFileInputStream *file_input_stream;
g_return_val_if_fail (uri != NULL, NULL);
file = g_file_new_for_uri (uri);
file_input_stream = g_file_read (file, NULL, NULL);
if (file_input_stream == NULL) {
g_object_unref (file);
return NULL;
}
loader = gdk_pixbuf_loader_new ();
if (1 <= width || 1 <= height) {
info.width = width;
info.height = height;
info.input_width = info.input_height = 0;
info.preserve_aspect_ratio = preserve_aspect_ratio;
g_signal_connect (loader, "size-prepared", G_CALLBACK (size_prepared_cb), &info);
}
has_frame = FALSE;
result = GNOME_VFS_ERROR_GENERIC;
while (!has_frame) {
bytes_read = g_input_stream_read (G_INPUT_STREAM (file_input_stream),
buffer,
sizeof (buffer),
NULL,
NULL);
if (bytes_read == -1) {
break;
}
result = GNOME_VFS_OK;
if (bytes_read == 0) {
break;
}
if (!gdk_pixbuf_loader_write (loader,
(unsigned char *)buffer,
bytes_read,
NULL)) {
result = GNOME_VFS_ERROR_WRONG_FORMAT;
break;
}
animation = gdk_pixbuf_loader_get_animation (loader);
if (animation) {
iter = gdk_pixbuf_animation_get_iter (animation, NULL);
if (!gdk_pixbuf_animation_iter_on_currently_loading_frame (iter)) {
has_frame = TRUE;
}
g_object_unref (iter);
}
}
gdk_pixbuf_loader_close (loader, NULL);
if (result != GNOME_VFS_OK) {
g_object_unref (G_OBJECT (loader));
g_input_stream_close (G_INPUT_STREAM (file_input_stream), NULL, NULL);
g_object_unref (file_input_stream);
g_object_unref (file);
return NULL;
}
g_input_stream_close (G_INPUT_STREAM (file_input_stream), NULL, NULL);
g_object_unref (file_input_stream);
g_object_unref (file);
pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
if (pixbuf != NULL) {
g_object_ref (G_OBJECT (pixbuf));
g_object_set_data (G_OBJECT (pixbuf), "gnome-original-width",
GINT_TO_POINTER (info.input_width));
g_object_set_data (G_OBJECT (pixbuf), "gnome-original-height",
GINT_TO_POINTER (info.input_height));
}
g_object_unref (G_OBJECT (loader));
return pixbuf;
}