From dc281b3471773935ec4da66864e6a6c768c41ff6 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Thu, 3 Nov 2011 23:39:07 -0400
Subject: Add a preview window written with PyQt.

---
 dimension/preview.py | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 dimension/preview.py

(limited to 'dimension/preview.py')

diff --git a/dimension/preview.py b/dimension/preview.py
new file mode 100644
index 0000000..868c16b
--- /dev/null
+++ b/dimension/preview.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+
+#########################################################################
+# Copyright (C) 2011 Tavian Barnes <tavianator@tavianator.com>          #
+#                                                                       #
+# This file is part of Dimension.                                       #
+#                                                                       #
+# Dimension is free software; you can redistribute it and/or modify it  #
+# under the terms of the GNU General Public License as published by the #
+# Free Software Foundation; either version 3 of the License, or (at     #
+# your option) any later version.                                       #
+#                                                                       #
+# Dimension is distributed in the hope that it will be useful, but      #
+# WITHOUT ANY WARRANTY; without even the implied warranty of            #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     #
+# General Public License for more details.                              #
+#                                                                       #
+# You should have received a copy of the GNU General Public License     #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>. #
+#########################################################################
+
+from PyQt4 import QtCore, QtGui, QtOpenGL
+
+class Preview(QtOpenGL.QGLWidget):
+  """Surface that the scene is rendered to."""
+  def __init__(self, parent, canvas):
+    QtOpenGL.QGLWidget.__init__(self, parent)
+    self.canvas = canvas
+
+  def paintGL(self):
+    self.canvas.draw_GL()
+
+class PreviewWindow(QtGui.QMainWindow):
+  """Main window for a rendering preview."""
+  def __init__(self, canvas, future):
+    QtGui.QMainWindow.__init__(self)
+    self.canvas = canvas
+    self.future = future
+
+    self.setMinimumSize(canvas.width, canvas.height)
+    self.setMaximumSize(canvas.width, canvas.height)
+    self.widget = Preview(self, canvas)
+    self.setCentralWidget(self.widget)
+
+    self.render_timer = QtCore.QTimer(self)
+    self.render_timer.timeout.connect(self.update_preview)
+    self.render_timer.start(0)
+
+  @QtCore.pyqtSlot()
+  def update_preview(self):
+    self.widget.updateGL()
+    if self.future.progress() == 1:
+      self.render_timer.stop()
+      self.close_timer = QtCore.QTimer(self)
+      self.close_timer.singleShot(1000, self.close)
+
+  @QtCore.pyqtSlot()
+  def close(self):
+    QtCore.QCoreApplication.instance().quit()
+
+def show_preview(canvas, future):
+  app = QtGui.QApplication(["Dimension Preview"])
+  window = PreviewWindow(canvas, future)
+  window.show()
+  app.exec()
+  del window
-- 
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