wxPython/demo/OGL.py

   1 # 11/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   2 #
   3 # o Updated for wx namespace
   4 #
   5 # 11/30/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   6 #
   7 # o OGL's busted bigtime. Can't even use OGLInitialize() without a
   8 #   program error on w2k.
   9 #
  10
  11 import  wx
  12 import  wx.ogl  as  ogl
  13
  14 import  images
  15
  16 ##wx.Trap()
  17
  18 #----------------------------------------------------------------------
  19 # This creates some pens and brushes that the OGL library uses.
  20
  21 ogl.OGLInitialize()
  22
  23 #----------------------------------------------------------------------
  24
  25 class DiamondShape(ogl.PolygonShape):
  26     def __init__(self, w=0.0, h=0.0):
  27         ogl.PolygonShape.__init__(self)
  28         if w == 0.0:
  29             w = 60.0
  30         if h == 0.0:
  31             h = 60.0
  32
  33         # Either ogl.RealPoints or 2-tuples of floats  works.
  34
  35         #points = [ ogl.RealPoint(0.0,    -h/2.0),
  36         #          ogl.RealPoint(w/2.0,  0.0),
  37         #          ogl.RealPoint(0.0,    h/2.0),
  38         #          ogl.RealPoint(-w/2.0, 0.0),
  39         #          ]
  40         points = [ (0.0,    -h/2.0),
  41                    (w/2.0,  0.0),
  42                    (0.0,    h/2.0),
  43                    (-w/2.0, 0.0),
  44                    ]
  45
  46         self.Create(points)
  47
  48
  49 #----------------------------------------------------------------------
  50
  51 class RoundedRectangleShape(ogl.RectangleShape):
  52     def __init__(self, w=0.0, h=0.0):
  53         ogl.RectangleShape.__init__(self, w, h)
  54         self.SetCornerRadius(-0.3)
  55
  56
  57 #----------------------------------------------------------------------
  58
  59 class DividedShape(ogl.DividedShape):
  60     def __init__(self, width, height, canvas):
  61         ogl.DividedShape.__init__(self, width, height)
  62
  63         region1 = ogl.ShapeRegion()
  64         region1.SetText('DividedShape')
  65         region1.SetProportions(0.0, 0.2)
  66         region1.SetFormatMode(ogl.FORMAT_CENTRE_HORIZ)
  67         self.AddRegion(region1)
  68
  69         region2 = ogl.ShapeRegion()
  70         region2.SetText('This is Region number two.')
  71         region2.SetProportions(0.0, 0.3)
  72         region2.SetFormatMode(ogl.FORMAT_CENTRE_HORIZ|ogl.FORMAT_CENTRE_VERT)
  73         self.AddRegion(region2)
  74
  75         region3 = ogl.ShapeRegion()
  76         region3.SetText('Region 3\nwith embedded\nline breaks')
  77         region3.SetProportions(0.0, 0.5)
  78         region3.SetFormatMode(ogl.FORMAT_NONE)
  79         self.AddRegion(region3)
  80
  81         self.SetRegionSizes()
  82         self.ReformatRegions(canvas)
  83
  84
  85     def ReformatRegions(self, canvas=None):
  86         rnum = 0
  87
  88         if canvas is None:
  89             canvas = self.GetCanvas()
  90
  91         dc = wx.ClientDC(canvas)  # used for measuring
  92
  93         for region in self.GetRegions():
  94             text = region.GetText()
  95             self.FormatText(dc, text, rnum)
  96             rnum += 1
  97
  98
  99     def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
 100         print "***", self
 101         self.base_OnSizingEndDragLeft(pt, x, y, keys, attch)
 102         self.SetRegionSizes()
 103         self.ReformatRegions()
 104         self.GetCanvas().Refresh()
 105
 106
 107 #----------------------------------------------------------------------
 108
 109 class MyEvtHandler(ogl.ShapeEvtHandler):
 110     def __init__(self, log, frame):
 111         ogl.ShapeEvtHandler.__init__(self)
 112         self.log = log
 113         self.statbarFrame = frame
 114
 115     def UpdateStatusBar(self, shape):
 116         x,y = shape.GetX(), shape.GetY()
 117         width, height = shape.GetBoundingBoxMax()
 118         self.statbarFrame.SetStatusText("Pos: (%d,%d)  Size: (%d, %d)" %
 119                                         (x, y, width, height))
 120
 121
 122     def OnLeftClick(self, x, y, keys = 0, attachment = 0):
 123         shape = self.GetShape()
 124         print shape.__class__, shape.GetClassName()
 125         canvas = shape.GetCanvas()
 126         dc = wx.ClientDC(canvas)
 127         canvas.PrepareDC(dc)
 128
 129         if shape.Selected():
 130             shape.Select(False, dc)
 131             canvas.Redraw(dc)
 132         else:
 133             redraw = False
 134             shapeList = canvas.GetDiagram().GetShapeList()
 135             toUnselect = []
 136
 137             for s in shapeList:
 138                 if s.Selected():
 139                     # If we unselect it now then some of the objects in
 140                     # shapeList will become invalid (the control points are
 141                     # shapes too!) and bad things will happen...
 142                     toUnselect.append(s)
 143
 144             shape.Select(True, dc)
 145
 146             if toUnselect:
 147                 for s in toUnselect:
 148                     s.Select(False, dc)
 149
 150                 canvas.Redraw(dc)
 151
 152         self.UpdateStatusBar(shape)
 153
 154
 155     def OnEndDragLeft(self, x, y, keys = 0, attachment = 0):
 156         shape = self.GetShape()
 157         self.base_OnEndDragLeft(x, y, keys, attachment)
 158
 159         if not shape.Selected():
 160             self.OnLeftClick(x, y, keys, attachment)
 161
 162         self.UpdateStatusBar(shape)
 163
 164
 165     def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
 166         self.base_OnSizingEndDragLeft(pt, x, y, keys, attch)
 167         self.UpdateStatusBar(self.GetShape())
 168
 169
 170     def OnMovePost(self, dc, x, y, oldX, oldY, display):
 171         self.base_OnMovePost(dc, x, y, oldX, oldY, display)
 172         self.UpdateStatusBar(self.GetShape())
 173
 174
 175     def OnRightClick(self, *dontcare):
 176         self.log.WriteText("%s\n" % self.GetShape())
 177
 178
 179 #----------------------------------------------------------------------
 180
 181 class TestWindow(ogl.ShapeCanvas):
 182     def __init__(self, parent, log, frame):
 183         ogl.ShapeCanvas.__init__(self, parent)
 184
 185         maxWidth  = 1000
 186         maxHeight = 1000
 187         self.SetScrollbars(20, 20, maxWidth/20, maxHeight/20)
 188
 189         self.log = log
 190         self.frame = frame
 191         self.SetBackgroundColour("LIGHT BLUE") #wx.WHITE)
 192         self.diagram = ogl.Diagram()
 193         self.SetDiagram(self.diagram)
 194         self.diagram.SetCanvas(self)
 195         self.shapes = []
 196         self.save_gdi = []
 197
 198         rRectBrush = wx.Brush("MEDIUM TURQUOISE", wx.SOLID)
 199         dsBrush = wx.Brush("WHEAT", wx.SOLID)
 200
 201         self.MyAddShape(
 202             ogl.CircleShape(80),
 203             100, 100, wx.Pen(wx.BLUE, 3), wx.GREEN_BRUSH, "Circle"
 204             )
 205
 206         self.MyAddShape(
 207             ogl.RectangleShape(85, 50),
 208             305, 60, wx.BLACK_PEN, wx.LIGHT_GREY_BRUSH, "Rectangle"
 209             )
 210
 211         ds = self.MyAddShape(
 212                     DividedShape(140, 150, self),
 213                     495, 145, wx.BLACK_PEN, dsBrush, ''
 214                     )
 215
 216         self.MyAddShape(
 217             DiamondShape(90, 90),
 218             345, 235, wx.Pen(wx.BLUE, 3, wx.DOT), wx.RED_BRUSH, "Polygon"
 219             )
 220
 221         self.MyAddShape(
 222             RoundedRectangleShape(95,70),
 223             140, 255, wx.Pen(wx.RED, 2), rRectBrush, "Rounded Rect"
 224             )
 225
 226         bmp = images.getTest2Bitmap()
 227         mask = wx.MaskColour(bmp, wx.BLUE)
 228         bmp.SetMask(mask)
 229
 230         s = ogl.BitmapShape()
 231         s.SetBitmap(bmp)
 232         self.MyAddShape(s, 225, 150, None, None, "Bitmap")
 233
 234         dc = wx.ClientDC(self)
 235         self.PrepareDC(dc)
 236
 237         for x in range(len(self.shapes)):
 238             fromShape = self.shapes[x]
 239             if x+1 == len(self.shapes):
 240                 toShape = self.shapes[0]
 241             else:
 242                 toShape = self.shapes[x+1]
 243
 244             line = ogl.LineShape()
 245             line.SetCanvas(self)
 246             line.SetPen(wx.BLACK_PEN)
 247             line.SetBrush(wx.BLACK_BRUSH)
 248             line.AddArrow(ogl.ARROW_ARROW)
 249             line.MakeLineControlPoints(2)
 250             fromShape.AddLine(line, toShape)
 251             self.diagram.AddShape(line)
 252             line.Show(True)
 253
 254             # for some reason, the shapes have to be moved for the line to show up...
 255             fromShape.Move(dc, fromShape.GetX(), fromShape.GetY())
 256
 257         wx.EVT_WINDOW_DESTROY(self, self.OnDestroy)
 258
 259
 260     def MyAddShape(self, shape, x, y, pen, brush, text):
 261         shape.SetDraggable(True, True)
 262         shape.SetCanvas(self)
 263         shape.SetX(x)
 264         shape.SetY(y)
 265         if pen:    shape.SetPen(pen)
 266         if brush:  shape.SetBrush(brush)
 267         if text:   shape.AddText(text)
 268         #shape.SetShadowMode(ogl.SHADOW_RIGHT)
 269         self.diagram.AddShape(shape)
 270         shape.Show(True)
 271
 272         evthandler = MyEvtHandler(self.log, self.frame)
 273         evthandler.SetShape(shape)
 274         evthandler.SetPreviousHandler(shape.GetEventHandler())
 275         shape.SetEventHandler(evthandler)
 276
 277         self.shapes.append(shape)
 278         return shape
 279
 280
 281     def OnDestroy(self, evt):
 282         # Do some cleanup
 283         for shape in self.diagram.GetShapeList():
 284             if shape.GetParent() == None:
 285                 shape.SetCanvas(None)
 286                 shape.Destroy()
 287
 288         self.diagram.Destroy()
 289
 290
 291     def OnBeginDragLeft(self, x, y, keys):
 292         self.log.write("OnBeginDragLeft: %s, %s, %s\n" % (x, y, keys))
 293
 294     def OnEndDragLeft(self, x, y, keys):
 295         self.log.write("OnEndDragLeft: %s, %s, %s\n" % (x, y, keys))
 296
 297
 298 #----------------------------------------------------------------------
 299
 300 def runTest(frame, nb, log):
 301     # This creates some pens and brushes that the OGL library uses.
 302     # It should be called after the app object has been created, but
 303     # before OGL is used.
 304     ogl.OGLInitialize()
 305
 306     win = TestWindow(nb, log, frame)
 307     return win
 308
 309 #----------------------------------------------------------------------
 310
 311 class __Cleanup:
 312     cleanup = ogl.OGLCleanUp
 313     def __del__(self):
 314         self.cleanup()
 315
 316 # when this module gets cleaned up then wxOGLCleanUp() will get called
 317 __cu = __Cleanup()
 318
 319
 320 overview = """\
 321 The Object Graphics Library is a library supporting the creation and
 322 manipulation of simple and complex graphic images on a canvas.
 323
 324 """
 325
 326 if __name__ == '__main__':
 327     import sys,os
 328     import run
 329     run.main(['', os.path.basename(sys.argv[0])])
 330