+++ /dev/null
-
-import wx
-import colorsys
-from math import cos, sin, radians
-
-#----------------------------------------------------------------------
-
-BASE = 80.0 # sizes used in shapes drawn below
-BASE2 = BASE/2
-BASE4 = BASE/4
-
-
-class TestPanel(wx.Panel):
- def __init__(self, parent, log):
- self.log = log
- wx.Panel.__init__(self, parent, -1)
-
- self.Bind(wx.EVT_PAINT, self.OnPaint)
-
- def OnPaint(self, evt):
- dc = wx.PaintDC(self)
- try:
- gc = wx.GraphicsContext.Create(dc)
- except NotImplementedError:
- dc.DrawText("This build of wxPython does not support the wx.GraphicsContext "
- "family of classes.",
- 25, 25)
- return
-
- font = wx.SystemSettings.GetFont(wx.SYS_DEFAULT_GUI_FONT)
- font.SetWeight(wx.BOLD)
- gc.SetFont(font)
-
- # make a path that contains a circle and some lines, centered at 0,0
- path = gc.CreatePath()
- path.AddCircle(0, 0, BASE2)
- path.MoveToPoint(0, -BASE2)
- path.AddLineToPoint(0, BASE2)
- path.MoveToPoint(-BASE2, 0)
- path.AddLineToPoint(BASE2, 0)
- path.CloseSubpath()
- path.AddRectangle(-BASE4, -BASE4/2, BASE2, BASE4)
-
-
- # Now use that path to demonstrate various capbilites of the grpahics context
- gc.PushState() # save current translation/scale/other state
- gc.Translate(60, 75) # reposition the context origin
-
- gc.SetPen(wx.Pen("navy", 1))
- gc.SetBrush(wx.Brush("pink"))
-
- # show the difference between stroking, filling and drawing
- for label, PathFunc in [("StrokePath", gc.StrokePath),
- ("FillPath", gc.FillPath),
- ("DrawPath", gc.DrawPath)]:
- if "wxGTK" in wx.PlatformInfo:
- w, h = dc.GetTextExtent(label) # NYI in Cairo context
- else:
- w, h = gc.GetTextExtent(label)
-
- gc.DrawText(label, -w/2, -BASE2-h)
- PathFunc(path)
- gc.Translate(2*BASE, 0)
-
-
- gc.PopState() # restore saved state
- gc.PushState() # save it again
- gc.Translate(60, 200) # offset to the lower part of the window
-
- gc.DrawText("Scale", 0, -BASE2)
- gc.Translate(0, 20)
-
- # for testing clipping
- #gc.Clip(0, 0, 100, 100)
- #rgn = wx.RegionFromPoints([ (0,0), (75,0), (75,25,), (100, 25),
- # (100,100), (0,100), (0,0) ])
- #gc.ClipRegion(rgn)
- #gc.ResetClip()
-
- gc.SetBrush(wx.Brush(wx.Colour(178, 34, 34, 128))) # 128 == half transparent
- for cnt in range(8):
- gc.Scale(1.08, 1.08) # increase scale by 8%
- gc.Translate(5,5)
- gc.DrawPath(path)
-
-
- gc.PopState() # restore saved state
- gc.PushState() # save it again
- gc.Translate(400, 200)
- gc.DrawText("Rotate", 0, -BASE2)
-
- gc.Translate(0, 75)
- for angle in range(0, 360, 30):
- gc.PushState() # save this new current state so we can pop back to
- # it at the end of the loop
- r, g, b = [int(c * 255) for c in colorsys.hsv_to_rgb(float(angle)/360, 1, 1)]
- gc.SetBrush(wx.Brush(wx.Colour(r, g, b, 64)))
-
- # use translate to artfully reposition each drawn path
- gc.Translate(1.5 * BASE2 * cos(radians(angle)),
- 1.5 * BASE2 * sin(radians(angle)))
-
- # use Rotate to rotate the path
- gc.Rotate(radians(angle))
-
- # now draw it
- gc.DrawPath(path)
- gc.PopState()
-
- gc.PopState()
-
-
-#----------------------------------------------------------------------
-
-def runTest(frame, nb, log):
- win = TestPanel(nb, log)
- return win
-
-#----------------------------------------------------------------------
-
-
-
-overview = """<html><body>
-<h2><center>wx.GraphicsContext and wx.GraphicsPath</center></h2>
-
-The new advanced 2D drawing API is implemented via the
-wx.GraphicsContext and wx.GraphicsPath classes. They wrap GDI+ on
-Windows, Cairo on wxGTK and CoreGraphics on OS X. They allow
-path-based drawing with alpha-blending and anti-aliasing, and use a
-floating point cooridnate system.
-
-<p>When viewing this sample pay attention to how the rounded edges are
-smoothed with anti-aliased drawing, and how the shapes on the lower
-half of the window are partially transparent, allowing you to see what
-was drawn before.
-
-</body></html>
-"""
-
-
-
-if __name__ == '__main__':
- import sys,os
- import run
- run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
-
projects / wxWidgets.git / blobdiff