1 files changed, 219 insertions, 0 deletions
diff --git a/python/pyqt/examples2/desktop.py b/python/pyqt/examples2/desktop.py
new file mode 100755
index 00000000..a1177f24
--- /dev/null
+++ b/python/pyqt/examples2/desktop.py
@@ -0,0 +1,219 @@
+#!/usr/bin/env python
+
+import sys
+from qt import *
+
+seed = 0.353535353535
+KINDA_RAND_MAX = 32767
+
+def kindaRand():
+  global seed
+  seed = seed * 147
+  seed = seed - int(seed)
+  return int(seed*(KINDA_RAND_MAX + 1))
+
+velmax = 15
+velmin = 4
+
+def velocity(i):
+  if i == 1 or i == 2:
+    i = (kindaRand()&0x7fff % velmax)/3 + velmin
+  else:
+    i = (kindaRand()&0x7fff % velmax) + velmin
+
+maxpoints = 5
+maxcurves = 8
+
+def poly():
+  d = QApplication.desktop()
+  d.setBackgroundColor(white)
+  xvel = [ 0 ] * 8
+  yvel = [ 0 ] * 8
+  head = 0
+  tail = -maxcurves + 2
+  a = QPointArray() * maxcurves
+  r = d.rect()
+  for i in range(maxcurves):
+    a[i].resize(maxpoints)
+  p = a[0]
+  for i in range(maxpoints):
+    p.setPoint(i, (kindaRand()&0x7fff) % r.width(),
+                  (kindaRand()&0x7fff) % r.height() )
+    xvel[i] = velocity(i)
+    yvel[i] = velocity(i)
+
+  paint = QPainter()
+  paint.begin(d)
+
+  for ntimes in range(2000):
+    paint.setBrush(QColor(kindaRand()%360,180,255, QColor.Hsv))
+    paint.drawPolygon(a[head])
+    tail = tail + 1
+    if tail >= maxcurves:
+      tail = 0
+    minx = r.left()
+    maxx = r.right()
+    miny = r.top()
+    maxy = r.bottom()
+    p = a[head]
+    head = head + 1
+    if head >= maxcurves:
+      head = 0
+    for i in range(maxpoints):
+      x, y = p.point(i)
+      x = x + xvel[i]
+      y = y + yvel[i]
+      if x >= maxx:
+        x = maxx - (x - maxx + 1)
+	xvel[i] = -velocity(i)
+      if x <= minx:
+        x = minx + (minx - x + 1)
+	xvel[i] = velocity(i)
+      if y >= maxy:
+        y = maxy - (y - maxy + 1)
+	yvel[i] = -velocity(i)
+      if y <= miny:
+        y = miny + (miny - y + 1)
+	yvel[i] = velocity(i)
+      a[head].setPoint(i, x, y)
+  paint.end()
+
+def rotate():
+  w = 64
+  h = 64
+  image = QImage(w, h, 8, 128)
+  for i in range(128):
+    image.setColor(i, qRgb(i,0,0))
+  for y in range(h):
+    for x in range(w):
+      image.setPixel(x,y,(x+y)%128)
+  
+  pm = QPixmap()
+  pm.convertFromImage(image)
+  #pm.optimize(1)
+
+  d = QApplication.desktop()
+
+  for i in range(0,361,2):
+    m = QWMatrix()
+    m.rotate(i)
+    rpm = pm.xForm(m)
+    d.setBackgroundPixmap(rpm)
+    d.update()
+
+def generateStone(pm, c1, c2, c3):
+  p = QPainter()
+  p1 = QPen(c1, 0)
+  p2 = QPen(c2, 0)
+  p3 = QPen(c3, 0)
+
+  p.begin(pm)
+  for i in range(pm.width()):
+    for j in range(pm.height()):
+      r = kindaRand()
+      if r < KINDA_RAND_MAX / 3:
+        p.setPen(p1)
+      elif r < KINDA_RAND_MAX / 3 * 2:
+        p.setPen(p2)
+      else:
+        p.setPen(p3)
+      p.drawPoint(i, j)
+  p.end()
+
+def drawShadeText(p, x, y, text, topColor, bottomColor, sw=2):
+  if not p.isActive():
+    return
+
+  p.setPen(bottomColor)
+  p.drawText(x+sw, y+sw, text)
+  p.setPen(topColor)
+  p.drawText(x, y, text)
+
+class DesktopWidget(QWidget):
+  def __init__(self, s, parent=None, name=''):
+    QWidget.__init__(self, parent, name, WType_Desktop | WPaintDesktop)
+    self.text = s
+    self.pm = None
+
+  def paintEvent(self, pe):
+    c1 = self.backgroundColor()
+    c2 = c1.light(104)
+    c3 = c1.dark(106)
+    if not self.pm:
+      self.pm = QPixmap(64, 64)
+      generateStone(self.pm, c1, c2, c3)
+      self.setBackgroundPixmap(self.pm)
+      self.update()
+    br = self.fontMetrics().boundingRect(self.text)
+    offscreen = QPixmap(br.width(), br.height())
+    x = self.width()/2 - br.width()/2
+    y = self.height()/2 - br.height()/2
+    offscreen.fill(self, x, y)
+    p = QPainter()
+    p.begin(offscreen)
+    drawShadeText(p, -br.x(), -br.y(), self.text, c2, c3, 3)
+    p.end()
+    bitBlt(self, x, y, offscreen)
+
+def desktopWidget(s='Troll Tech'):
+  t = DesktopWidget(s)
+  t.update()
+  qApp.exec_loop()
+
+def desktopText(s='Troll Tech'):
+  border = 20
+
+  c1 = qApp.palette().normal().background()
+  c2 = c1.light(104)
+  c3 = c1.dark(106)
+
+  pm = QPixmap(10, 10)
+  p = QPainter()
+  p.begin(pm)
+  r = p.fontMetrics().boundingRect(s)
+  p.end()
+
+  appWidth = qApp.desktop().width()
+  appHeight = qApp.desktop().height()
+  if r.width() > appWidth - border*2:
+    r.setWidth(appWidth - border*2)
+  if r.height() > appHeight - border*2:
+    r.setHeight(appHeight - border*2)
+
+  pm.resize(r.size().width()+border*2,r.size().height()+border*2)
+  generateStone(pm, c1, c2, c3)
+  p.begin(pm)
+  drawShadeText(p, -r.x()+border, -r.y()+border, s, c2, c3)
+  p.end()
+
+  qApp.desktop().setBackgroundPixmap(pm)
+
+a = QApplication(sys.argv)
+if len(sys.argv) > 1:
+  f = QFont('charter', 96, QFont.Weight.Black)
+  f.setStyleHint(QFont.StyleHint.Times)
+  a.setFont(f)
+validOptions = 0
+if len(sys.argv) == 2:
+  validOptions = 1
+  if sys.argv[1] == '-poly':
+    poly()
+  elif sys.argv[1] == '-rotate':
+    rotate()
+  elif sys.argv[1] == '-troll':
+    desktopText()
+  elif sys.argv[1] == '-trollwidget':
+    desktopWidget()
+  else:
+    validOptions = 0
+if len(sys.argv) == 3:
+  validOptions = 1
+  if sys.argv[1] == '-shadetext':
+    desktopText(sys.argv[2])
+  elif sys.argv[1] == '-shadewidget':
+    desktopWidget(sys.argv[2])
+  else:
+    validOptions = 0
+
+if not validOptions:
+  rotate()