--- a/callbacks.c	Fri Dec 07 21:38:25 2007 +0100
+++ b/callbacks.c	Wed Mar 19 23:01:43 2008 +0100
@@ -1,10 +1,14 @@
 #include <gtk/gtk.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
 
 #include "main.h"
 #include "callbacks.h"
 #include "interface.h"
 #include "support.h"
 
+int image_width;
+int image_height;
+float inc = 0.1;
 /*
 void update_spin_button_ratio(GtkWidget* spinbutton) {
 	g_print("ratio change: %f\n", ratio);
@@ -161,6 +165,45 @@
 
 
 
+/* zoom */
+void on_zoom_in_button_clicked(GtkObject* object, gpointer user_data) {
+	printf("zoom in clicked\n");
+	image_width *= 1 + inc;
+	image_height *= 1 + inc;
+	gtk_image_set_from_pixbuf(lookup_widget(cropper_window, "image_area"),
+			gdk_pixbuf_scale_simple(image_buffer, image_width, image_height, GDK_INTERP_BILINEAR));
+}
+
+void on_zoom_out_button_clicked(GtkObject* object, gpointer user_data) {
+	printf("zoom out clicked\n");
+	image_width *= 1 - inc;
+	image_height *= 1 - inc;
+	gtk_image_set_from_pixbuf(lookup_widget(cropper_window, "image_area"),
+			gdk_pixbuf_scale_simple(image_buffer, image_width, image_height, GDK_INTERP_BILINEAR));
+}
+
+void on_zoom_100_button_clicked(GtkObject* object, gpointer user_data) {
+	printf("zoom 100 clicked\n");
+	image_width = gdk_pixbuf_get_width(image_buffer);
+	image_height = gdk_pixbuf_get_height(image_buffer);
+	gtk_image_set_from_pixbuf(lookup_widget(cropper_window, "image_area"),
+			gdk_pixbuf_scale_simple(image_buffer, image_width, image_height, GDK_INTERP_BILINEAR));
+}
+
+void on_zoom_fit_button_clicked(GtkObject* object, gpointer user_data) {
+	printf("zoom fit clicked\n");
+	image_width = gdk_pixbuf_get_width(image_buffer) + 200; /* FIXME */
+	image_height = gdk_pixbuf_get_height(image_buffer) + 200; /* FIXME */
+	gtk_image_set_from_pixbuf(lookup_widget(cropper_window, "image_area"),
+			gdk_pixbuf_scale_simple(image_buffer, image_width, image_height, GDK_INTERP_BILINEAR));
+}
+
+
+
+
+
+
+
 void on_crop_clicked(GtkButton* button, gpointer user_data) {
 	char crop_call[256];
 
@@ -176,6 +219,10 @@
 	gtk_main_quit();
 }
 
+void on_cropper_window_create (GtkObject* object, gpointer user_data) {
+	image_width = gdk_pixbuf_get_width(image_buffer);
+	image_height = gdk_pixbuf_get_height(image_buffer);
+}
 
 void on_cropper_window_destroy (GtkObject* object, gpointer user_data) {
 	gtk_main_quit();