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#include <unistd.h>
#include <glib/gstdio.h>
#include <gtk/gtk.h>
#include "db.h"
#include "thumbnails.h"
GThread *thumb_thread = NULL;
gboolean thumb_thread_exit = FALSE;
inline static gchar *get_wall_thumb_name(const gchar *filepath) {
GChecksum *ck;
gchar *s;
gchar *cksum;
ck = g_checksum_new(G_CHECKSUM_MD5);
s = g_strdup_printf("file://%s", filepath);
g_checksum_update(ck, (const guchar*)s, -1);
g_free(s);
cksum = g_strdup_printf("%s/.thumbnails/normal/%s.png", g_get_home_dir(), g_checksum_get_string(ck));
g_checksum_free(ck);
return cksum;
}
inline static time_t get_mtime(const gchar *filepath) {
struct stat sb;
if(g_stat(filepath, &sb) == 0) {
return sb.st_mtime;
} else {
return 0;
}
}
inline static gboolean is_thumb_modified(GdkPixbuf *pb, const gchar *filename, const gchar *thumbname) {
time_t mtime, pb_mtime, thumb_mtime;
const gchar *mtime_s;
mtime = get_mtime(filename);
mtime_s = gdk_pixbuf_get_option(pb, "tEXt::Thumb::MTime");
pb_mtime = g_ascii_strtoll(mtime_s, NULL, 10);
/* Original file modified since thumbnail creation. */
if(mtime != pb_mtime)
return TRUE;
thumb_mtime = get_mtime(thumbname);
/* Original file newer than thumbnail. */
if(mtime > thumb_mtime)
return TRUE;
return FALSE;
}
GdkPixbuf *get_thumbnail(const gchar *filepath) {
GdkPixbuf *pb, *pb2;
gint win_width, win_height, img_width, img_height, width, height;
gdouble scalex, scaley, width_ratio, height_ratio;
GError *error = NULL;
gchar *thumbname, *mtime, *width_s, *height_s;
thumbname = get_wall_thumb_name(filepath);
if(g_access(thumbname, F_OK) == 0) {
pb = gdk_pixbuf_new_from_file(thumbname, &error);
if(pb && !is_thumb_modified(pb, filepath, thumbname)) {
g_free(thumbname);
return pb;
} else if(pb) {
g_object_unref(pb);
}
}
pb = gdk_pixbuf_new_from_file(filepath, &error);
if(!pb) {
g_warning("%s", error->message);
g_error_free(error);
g_free(thumbname);
return NULL;
}
img_width = gdk_pixbuf_get_width(pb);
img_height = gdk_pixbuf_get_height(pb);
win_width = win_height = 128;
width_ratio = (gdouble)img_width / (gdouble)win_width;
height_ratio = (gdouble)img_height / (gdouble)win_height;
if(width_ratio > height_ratio) {
width = win_width;
height = (gint)(1.0 / width_ratio * img_height);
} else {
height = win_height;
width = (gint)(1.0 / height_ratio * img_width);
}
scalex = (gdouble)width / (gdouble)img_width;
scaley = (gdouble)height / (gdouble)img_height;
pb2 = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
gdk_pixbuf_scale(pb, pb2, 0, 0, width, height, 0, 0, scalex, scaley, GDK_INTERP_BILINEAR);
g_object_unref(pb);
error = NULL;
mtime = g_strdup_printf("%lu", (unsigned long)get_mtime(filepath));
width_s = g_strdup_printf("%d", img_width);
height_s = g_strdup_printf("%d", img_height);
if(!gdk_pixbuf_save(pb2, thumbname, "png", &error,
"tEXt::Thumb::URI", filepath,
"tEXt::Thumb::MTime", mtime,
"tEXt::Software", "walls",
"tEXt::Thumb::Image::Width", width_s,
"tEXt::Thumb::Image::Height", height_s,
NULL)) {
g_warning("%s", error->message);
g_error_free(error);
}
g_free(mtime);
g_free(width_s);
g_free(height_s);
g_free(thumbname);
return pb2;
}
gpointer add_thumbs_thread(gpointer data) {
GtkListStore *liststore;
GtkTreeIter iter;
GtkTreePath *path;
int n;
GValue value = {0};
GdkPixbuf *pb = NULL;
const gchar *filepath;
thumb_thread_exit = FALSE;
liststore = GTK_LIST_STORE(data);
if(!gtk_tree_model_get_iter_first(GTK_TREE_MODEL(liststore), &iter)) {
return NULL;
}
n = gtk_tree_model_iter_n_children(GTK_TREE_MODEL(liststore), NULL);
for(int i = 0; i < n; i++) {
if(thumb_thread_exit == TRUE)
break;
gtk_tree_model_get_value(GTK_TREE_MODEL(liststore), &iter, 1, &value);
filepath = g_value_get_string(&value);
pb = get_thumbnail(filepath);
g_value_unset(&value);
if(pb) {
gtk_list_store_set(liststore, &iter, 0, pb, -1);
path = gtk_tree_model_get_path(GTK_TREE_MODEL(liststore), &iter);
if(path)
gtk_tree_model_row_changed(GTK_TREE_MODEL(liststore), path, &iter);
g_object_unref(pb);
}
gtk_tree_model_iter_next(GTK_TREE_MODEL(liststore), &iter);
}
thumb_thread = NULL;
return NULL;
}
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