Add new splash window

CURA-4215

- New splash window background image
- Rotating loading circle on the splash window

cura/CuraSplashScreen.py

@@ -1,38 +1,117 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Uranium is released under the terms of the AGPLv3 or higher.
 
+from threading import Thread, Event
+import time
+
 from PyQt5.QtCore import Qt, QCoreApplication
-from PyQt5.QtGui import QPixmap, QColor, QFont, QFontMetrics
+from PyQt5.QtGui import QPixmap, QColor, QFont, QFontMetrics, QImage, QPen
 from PyQt5.QtWidgets import QSplashScreen
 
 from UM.Resources import Resources
 from UM.Application import Application
 
+
 class CuraSplashScreen(QSplashScreen):
     def __init__(self):
         super().__init__()
         self._scale = round(QFontMetrics(QCoreApplication.instance().font()).ascent() / 12)
 
         splash_image = QPixmap(Resources.getPath(Resources.Images, "cura.png"))
-        self.setPixmap(splash_image.scaled(splash_image.size() * self._scale))
+        self.setPixmap(splash_image.scaled(splash_image.size() * 0.5 * self._scale))
+
+        self._current_message = ""
+
+        self._loading_image = QImage(Resources.getPath(Resources.Images, "loading.png"))
+        self._loading_image = self._loading_image.scaled(30, 30, Qt.KeepAspectRatio)
+        self._loading_image_rotation_angle = 0
+
+        self._to_stop = False
+        self._loading_tick_thread = LoadingTickThread(self)
+
+    def show(self):
+        super().show()
+        self._loading_tick_thread.start()
+
+    def updateLoadingImage(self):
+        if self._to_stop:
+            return
+
+        self._loading_image_rotation_angle -= 10
+        self.repaint()
 
     def drawContents(self, painter):
+        if self._to_stop:
+            return
+
         painter.save()
-        painter.setPen(QColor(0, 0, 0, 255))
+        painter.setPen(QColor(255, 255, 255, 255))
 
         version = Application.getInstance().getVersion().split("-")
         buildtype = Application.getInstance().getBuildType()
         if buildtype:
-            version[0] += " (%s)" %(buildtype)
+            version[0] += " (%s)" % buildtype
 
-        font = QFont() # Using system-default font here
-        font.setPointSize(20)
+        # draw version text
+        font = QFont()  # Using system-default font here
+        font.setPointSize(38)
         painter.setFont(font)
-        painter.drawText(0, 0, 330 * self._scale, 230 * self._scale, Qt.AlignHCenter | Qt.AlignBottom, version[0])
+        painter.drawText(230, 88, 330 * self._scale, 230 * self._scale, Qt.AlignHCenter | Qt.AlignBottom, version[0])
         if len(version) > 1:
             font.setPointSize(12)
             painter.setFont(font)
-            painter.drawText(0, 0, 330 * self._scale, 255 * self._scale, Qt.AlignHCenter | Qt.AlignBottom, version[1])
+            painter.drawText(280, 77, 330 * self._scale, 255 * self._scale, Qt.AlignHCenter | Qt.AlignBottom, version[1])
+
+        # draw the loading image
+        pen = QPen()
+        pen.setWidth(4 * self._scale)
+        pen.setColor(QColor(255, 255, 255, 255))
+        painter.setPen(pen)
+        painter.drawArc(130, 495, 32 * self._scale, 32 * self._scale, self._loading_image_rotation_angle * 16, 300 * 16)
+
+        # draw message text
+        if self._current_message:
+            font = QFont()  # Using system-default font here
+            font.setPointSize(16)
+            painter.setFont(font)
+            painter.drawText(200, 295, 330 * self._scale, 230 * self._scale, Qt.AlignLeft | Qt.AlignBottom,
+                             self._current_message)
 
         painter.restore()
         super().drawContents(painter)
+
+    def showMessage(self, message, *args, **kwargs):
+        if self._to_stop:
+            return
+
+        self._current_message = message
+        self.messageChanged.emit(message)
+        self.repaint()
+
+    def close(self):
+        # set stop flags
+        self._to_stop = True
+        self._loading_tick_thread.setToStop()
+        super().close()
+
+
+class LoadingTickThread(Thread):
+
+    def __init__(self, splash):
+        super().__init__(daemon = True)
+        self._splash = splash
+        self._to_stop = False
+        self._time_interval = 0.05
+        self._event = Event()
+
+    def setToStop(self):
+        self._to_stop = True
+        self._event.set()
+
+    def run(self):
+        while not self._to_stop:
+            self._event.wait(self._time_interval)
+            if self._event.is_set():
+                break
+
+            self._splash.updateLoadingImage()