Port to Gtk3 SL #3772

This commit ports Typing Turtle to its Gtk3 version.

Signed-off-by: Manuel Kaufmann <humitos@gmail.com>

1 files changed, 30 insertions, 24 deletions

diff --git a/titlescene.py b/titlescene.py
index 4dc6ae4..9739152 100644
--- a/titlescene.py
+++ b/titlescene.py
@@ -18,12 +18,15 @@
 import random
 from gettext import gettext as _
 
-# Import PyGTK.
-import gobject, pygtk, gtk, pango
-import pangocairo
+from gi.repository import Gtk
+from gi.repository import Gdk
+from gi.repository import GObject
+from gi.repository import Pango
+from gi.repository import PangoCairo
+from gi.repository import GdkPixbuf
 
 
-class TitleScene(gtk.DrawingArea):
+class TitleScene(Gtk.DrawingArea):
     # Maximum portion of the screen the background can fill vertically.
     BACKGROUND_HEIGHT_RATIO = 0.6
 
@@ -34,58 +37,61 @@ class TitleScene(gtk.DrawingArea):
     TITLE_FONT = 'Times 45'
 
     def __init__(self):
-        gtk.DrawingArea.__init__(self)
+        Gtk.DrawingArea.__init__(self)
 
-        pbuf = gtk.gdk.pixbuf_new_from_file('images/main-background.jpg')
+        pbuf = GdkPixbuf.Pixbuf.new_from_file('images/main-background.jpg')
 
-        width_ratio = float(gtk.gdk.screen_width()) / pbuf.get_width()
-        height_ratio = float(gtk.gdk.screen_height()*TitleScene.BACKGROUND_HEIGHT_RATIO) / pbuf.get_height()
+        width_ratio = float(Gdk.Screen.width()) / pbuf.get_width()
+        height_ratio = float(Gdk.Screen.height()*TitleScene.BACKGROUND_HEIGHT_RATIO) / pbuf.get_height()
 
         ratio = min(width_ratio, height_ratio)
-        self.backgroundpixbuf = pbuf.scale_simple(int(pbuf.get_width()*ratio), int(pbuf.get_height()*ratio), gtk.gdk.INTERP_BILINEAR)
+        self.backgroundpixbuf = pbuf.scale_simple(int(pbuf.get_width()*ratio), int(pbuf.get_height()*ratio), GdkPixbuf.InterpType.BILINEAR)
  
         self.set_size_request(self.backgroundpixbuf.get_width(), self.backgroundpixbuf.get_height())
         
-        self.connect("expose-event", self.expose_cb)
+        self.connect("draw", self.draw_cb)
         
         self.title_original = _('Typing Turtle')
         self.title_src = self.title_original
         self.title_text = ''
 
-    def expose_cb(self, area, event):
+    def draw_cb(self, area, cr):
         bounds = self.get_allocation()
 
-        cr = self.window.cairo_create()
-
         # Background picture.
         x = (bounds.width - self.backgroundpixbuf.get_width())/2
-        cr.set_source_pixbuf(self.backgroundpixbuf, 0, 0)
+
+        Gdk.cairo_set_source_pixbuf(cr, self.backgroundpixbuf, 0, 0)
         cr.rectangle(x, 0, self.backgroundpixbuf.get_width(),
                      self.backgroundpixbuf.get_height())
         cr.paint()
 
-        cr = pangocairo.CairoContext(cr)
         cr.set_source_rgb(0, 0, 0)
-        self.pango_layout = cr.create_layout()
+        self.pango_layout = PangoCairo.create_layout(cr)
         self.pango_layout.set_font_description(
-            pango.FontDescription(TitleScene.TITLE_FONT))
-        self.pango_layout.set_text(unicode(self.title_original))
+            Pango.FontDescription(TitleScene.TITLE_FONT))
+        self.pango_layout.set_text(unicode(self.title_original),
+                                   len(self.title_original))
 
         original_size = self.pango_layout.get_size()
-        self.x_text = (bounds.width - original_size[0] / pango.SCALE) - \
+        self.x_text = (bounds.width - original_size[0] / Pango.SCALE) - \
             TitleScene.TITLE_OFFSET[0]
         self.y_text = TitleScene.TITLE_OFFSET[1]
 
-        gobject.timeout_add(50, self.timer_cb)
+        GObject.timeout_add(50, self.timer_cb)
 
     def draw_text(self):
         # Animated Typing Turtle title.
-        cr = self.window.cairo_create()
+        window = self.get_window()
+        if window is None:
+            return
+        cr = window.cairo_create()
 
         cr.move_to(self.x_text, self.y_text)
-        self.pango_layout.set_text(unicode(self.title_text))
-        cr.show_layout(self.pango_layout)
-        cr.stroke()
+        self.pango_layout.set_text(unicode(self.title_text),
+                                   len(self.title_text))
+        PangoCairo.update_layout(cr, self.pango_layout)
+        PangoCairo.show_layout(cr, self.pango_layout)
 
     def timer_cb(self):
         if len(self.title_src) > 0: