1 files changed, 138 insertions, 0 deletions
diff --git a/thumbnails.c b/thumbnails.c
new file mode 100644
index 0000000..18e2d9f
--- /dev/null
+++ b/thumbnails.c
@@ -0,0 +1,138 @@
+#include <unistd.h>
+#include <utime.h>
+#include <string.h>
+
+#include <glib/gstdio.h>
+#include <gtk/gtk.h>
+
+#include "db.h"
+#include "thumbnails.h"
+
+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, 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 utimbuf times;
+
+	if(g_utime(filepath, &times) == 0) {
+		return times.modtime;
+	} else {
+		return 0;
+	}
+}
+
+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, max_ratio;
+	GError *error = NULL;
+	gchar *thumbname;
+
+	thumbname = get_wall_thumb_name(filepath);
+
+	if(g_access(thumbname, F_OK) == 0) {
+		pb = gdk_pixbuf_new_from_file(thumbname, &error);
+		g_free(thumbname);
+		return pb;
+	} else {
+		pb = gdk_pixbuf_new_from_file(filepath, &error);
+	}
+
+	if(!pb) {
+		g_warning("%s", error->message);
+		g_free(error);
+		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;
+	if(!gdk_pixbuf_save(pb2, thumbname, "png", &error,
+				"tEXt::Thumb::URI", filepath,
+				"tEXt::Thumb::MTime", get_mtime(filepath),
+				"tEXt::Software", "walls",
+				NULL)) {
+		g_warning("%s", error->message);
+		g_free(error);
+	}
+
+	g_free(thumbname);
+
+	return pb2;
+}
+
+static void fill_wall_list(GtkListStore *liststore, GArray *array) {
+	GtkTreeIter iter;
+
+	for(int i = 0; i < array->len; i++) {
+		struct wallpaper_t *wall;
+		wall = &g_array_index(array, struct wallpaper_t, i);
+
+		gtk_list_store_append(liststore, &iter);
+		gtk_list_store_set(liststore, &iter, 0, NULL, 1, wall->filepath, -1);
+		g_free(wall->filepath);
+	}
+	g_array_free(array, TRUE);
+}
+
+gpointer add_thumbs_thread(gpointer data) {
+	GtkListStore *liststore;
+	GtkTreeIter iter;
+	int n;
+	GValue value;
+	GdkPixbuf *pb = NULL;
+	const gchar *filepath;
+
+	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);
+
+	memset(&value, 0, sizeof(GValue));
+
+	for(int i = 0; i < n; i++) {
+		gtk_tree_model_get_value(GTK_TREE_MODEL(liststore), &iter, 1, &value);
+		printf("file: %s\n", g_value_get_string(&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);
+
+			g_object_unref(pb);
+		}
+		gtk_tree_model_iter_next(GTK_TREE_MODEL(liststore), &iter);
+	}
+}