Rescale points and use its individual scale to show image

[cascardo/movie.git] / gdk.c

diff --git a/gdk.c b/gdk.c
index 73e11d9..780e2ba 100644 (file)
--- a/gdk.c
+++ b/gdk.c
@@ -17,38 +17,99 @@
  */
 
 
+#include <gtk/gtk.h>
 #include <gdk-pixbuf/gdk-pixbuf.h>
+#include "point.h"
+
+struct ctx
+{
+  GtkWidget *draw;
+  GdkPixbuf *picture;
+  GArray *points;
+  int i;
+  gboolean move;
+};
 
 #define FILENAME "/home/cascardo/fotos/debconf.jpg"
 #define WIDTH 800
 #define HEIGHT 600
 
+gboolean
+queue (gpointer data)
+{
+  struct ctx *ctx;
+  ctx = (struct ctx *) data;
+  gtk_widget_queue_draw (GTK_WIDGET (ctx->draw));
+  ctx->move = TRUE;
+  return FALSE;
+}
+
+gboolean
+expose (GtkWidget *widget, GdkEventExpose *event, gpointer data)
+{
+  GdkPixbuf *screen;
+  struct ctx *ctx;
+  Point point;
+  ctx = (struct ctx *) data;
+  if (ctx->move)
+    ctx->i = (ctx->i >= ctx->points->len) ? 0 : ctx->i + 1;
+  point = g_array_index (ctx->points, Point, ctx->i);
+  screen = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
+                           event->area.width, event->area.height);
+  gdk_pixbuf_scale (ctx->picture, screen, 0, 0,
+                    event->area.width, event->area.height,
+                   -point.x + event->area.width/2, -point.y + event->area.height/2,
+                   point.rx, point.ry, GDK_INTERP_HYPER);
+  gdk_draw_pixbuf (widget->window, NULL, screen, 0, 0, 0, 0, -1, -1,
+                   GDK_RGB_DITHER_NONE, 0, 0);
+  gdk_pixbuf_unref (screen);
+  if (point.name)
+    {
+      g_timeout_add (3000, queue, ctx);
+    }
+  else
+    {
+      g_timeout_add (10, queue, ctx);
+    }
+  ctx->move = FALSE;
+  return FALSE;
+}
+
 int
 main (int argc, char **argv)
 {
   char *filename;
-  GdkPixbuf *picture;
-  GdkPixbuf *screen;
   GdkColorspace colorspace;
   gboolean has_alpha;
   int bits_per_sample;
   int width, height;
-  g_type_init ();
+  GtkWidget *window;
+  struct ctx ctx;
+  gtk_init (&argc, &argv);
   if (argc < 2)
     filename = FILENAME;
   else
     filename = argv[1];
-  picture = gdk_pixbuf_new_from_file (filename, NULL);
-  colorspace = gdk_pixbuf_get_colorspace (picture);
-  has_alpha = gdk_pixbuf_get_has_alpha (picture);
-  bits_per_sample = gdk_pixbuf_get_bits_per_sample (picture);
+  ctx.points = ReadPoints ("pro-gnu");
+  rescale_points (ctx.points);
+  ctx.picture = gdk_pixbuf_new_from_file (filename, NULL);
+  ctx.i = ctx.points->len;
+  colorspace = gdk_pixbuf_get_colorspace (ctx.picture);
+  has_alpha = gdk_pixbuf_get_has_alpha (ctx.picture);
+  bits_per_sample = gdk_pixbuf_get_bits_per_sample (ctx.picture);
   width = WIDTH;
   height = HEIGHT;
-  screen = gdk_pixbuf_new (colorspace, has_alpha, bits_per_sample,
-                           width, height);
-  gdk_pixbuf_scale (picture, screen, 0, 0, width, height, 0, 0, 2, 2,
-                    GDK_INTERP_BILINEAR);
-  gdk_pixbuf_unref (picture);
-  gdk_pixbuf_unref (screen);
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  g_signal_connect (G_OBJECT (window), "destroy",
+                    G_CALLBACK (gtk_main_quit), NULL);
+  ctx.draw = gtk_drawing_area_new ();
+  gtk_widget_set_size_request (ctx.draw, width, height);
+  gtk_container_add (GTK_CONTAINER (window), ctx.draw);
+  gtk_widget_show_all (window);
+  g_signal_connect (G_OBJECT (ctx.draw), "expose_event",
+                    G_CALLBACK (expose), &ctx);
+  g_timeout_add (10, queue, &ctx);
+  gtk_main ();
+  gdk_pixbuf_unref (ctx.picture);
   return 0;
 }