#include <gdk-pixbuf/gdk-pixbuf.h>
#include <clutter/clutter.h>
#define STAGE_WIDTH 800
#define STAGE_HEIGHT 600
#define THUMBNAIL_SIZE 200
#define ROW_COUNT (STAGE_HEIGHT / THUMBNAIL_SIZE)
#define COL_COUNT (STAGE_WIDTH / THUMBNAIL_SIZE)
#define THUMBNAIL_COUNT (ROW_COUNT * COL_COUNT)
#define ANIMATION_DURATION_MS 500
#define IMAGE_DIR_PATH "./berlin_images/"
static GPtrArray *img_paths;
static ClutterPoint unfocused_pos;
static void
load_image_path_names()
{
/* Ensure we can access the directory. */
GError *error = NULL;
GDir *dir = g_dir_open(IMAGE_DIR_PATH, 0, &error);
if(error)
{
g_warning("g_dir_open() failed with error: %s\n", error->message);
g_clear_error(&error);
return;
}
img_paths = g_ptr_array_new_with_free_func (g_free);
const gchar *filename = g_dir_read_name(dir);
while(filename)
{
if(g_str_has_suffix(filename, ".jpg") || g_str_has_suffix(filename, ".png"))
{
gchar *path = g_build_filename(IMAGE_DIR_PATH, filename, NULL);
g_ptr_array_add (img_paths, path);
}
filename = g_dir_read_name(dir);
}
}
static gboolean
actor_clicked_cb(ClutterActor *actor,
ClutterEvent *event,
gpointer user_data)
{
/* Flag to keep track of our state. */
static gboolean is_focused = FALSE;
ClutterActorIter iter;
ClutterActor *child;
/* Reset the focus state on all the images */
clutter_actor_iter_init (&iter, clutter_actor_get_parent(actor));
while (clutter_actor_iter_next(&iter, &child))
clutter_actor_set_reactive(child, is_focused);
clutter_actor_save_easing_state(actor);
clutter_actor_set_easing_duration(actor, ANIMATION_DURATION_MS);
if(is_focused)
{
/* Restore the old location and size. */
clutter_actor_set_position(actor, unfocused_pos.x, unfocused_pos.y);
clutter_actor_set_size(actor, THUMBNAIL_SIZE, THUMBNAIL_SIZE);
}
else
{
/* Save the current location before animating. */
clutter_actor_get_position(actor, &unfocused_pos.x, &unfocused_pos.y);
/* Only the currently focused image should receive to events. */
clutter_actor_set_reactive(actor, TRUE);
/* Put the focused image on top. */
clutter_actor_set_child_above_sibling(clutter_actor_get_parent(actor), actor, NULL);
clutter_actor_set_position(actor, (STAGE_WIDTH - STAGE_HEIGHT) / 2.0, 0);
clutter_actor_set_size(actor, STAGE_HEIGHT, STAGE_HEIGHT);
}
clutter_actor_restore_easing_state(actor);
/* Toggle our flag. */
is_focused = !is_focused;
return TRUE;
}
/* This function handles setting up and placing the rectangles. */
static void
initialize_actor(ClutterActor *actor, guint row, guint col)
{
clutter_actor_set_size(actor, THUMBNAIL_SIZE, THUMBNAIL_SIZE);
clutter_actor_set_position(actor, col * THUMBNAIL_SIZE, row * THUMBNAIL_SIZE);
clutter_actor_set_reactive(actor, TRUE);
g_signal_connect(actor,
"button-press-event",
G_CALLBACK(actor_clicked_cb),
NULL);
}
int
main(int argc, char *argv[])
{
ClutterColor stage_color = { 16, 16, 16, 255 };
ClutterActor *stage = NULL;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
stage = clutter_stage_new();
clutter_actor_set_size(stage, STAGE_WIDTH, STAGE_HEIGHT);
clutter_actor_set_background_color(stage, &stage_color);
clutter_stage_set_title(CLUTTER_STAGE (stage), "Photo Wall");
g_signal_connect(stage, "destroy", G_CALLBACK(clutter_main_quit), NULL);
load_image_path_names();
guint row = 0;
guint col = 0;
for(row=0; row < ROW_COUNT; ++row)
{
for(col=0; col < COL_COUNT; ++col)
{
const char *img_path = g_ptr_array_index(img_paths, (row * COL_COUNT) + col);
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(img_path, STAGE_HEIGHT, STAGE_HEIGHT, NULL);
ClutterContent *image = clutter_image_new ();
ClutterActor *actor = clutter_actor_new ();
if (pixbuf != NULL)
{
clutter_image_set_data(CLUTTER_IMAGE(image),
gdk_pixbuf_get_pixels(pixbuf),
gdk_pixbuf_get_has_alpha(pixbuf)
? COGL_PIXEL_FORMAT_RGBA_8888
: COGL_PIXEL_FORMAT_RGB_888,
gdk_pixbuf_get_width(pixbuf),
gdk_pixbuf_get_height(pixbuf),
gdk_pixbuf_get_rowstride(pixbuf),
NULL);
}
clutter_actor_set_content(actor, image);
g_object_unref(image);
g_object_unref(pixbuf);
initialize_actor(actor, row, col);
clutter_actor_add_child(stage, actor);
}
}
/* Show the stage. */
clutter_actor_show(stage);
/* Start the clutter main loop. */
clutter_main();
g_ptr_array_unref(img_paths);
return 0;
}