wxPython/demo/OGL.py

   1 # -*- coding: iso-8859-1 -*-
   2 # 11/20/2003 - Jeff Grimmett (grimmtooth@softhome.net)
   3 #
   4 # o Updated for wx namespace
   5 #
   6 # 20040508 - Pierre Hjälm
   7 #
   8 # o Changed to use the python version of OGL
   9 # o Added TextShape, CompositeShape and CompositeShape with divisions
  10 #
  11 # 20040830 - Pierre Hjälm
  12 #
  13 # o Added DrawnShape
  14 #
  15
  16 import wx
  17 import wx.lib.ogl as ogl
  18
  19 import  images
  20
  21 #----------------------------------------------------------------------
  22
  23 class DrawnShape(ogl.DrawnShape):
  24     def __init__(self):
  25         ogl.DrawnShape.__init__(self)
  26
  27         self.SetDrawnBrush(wx.WHITE_BRUSH)
  28         self.SetDrawnPen(wx.BLACK_PEN)
  29         self.DrawArc((0, -10), (30, 0), (-30, 0))
  30
  31         self.SetDrawnPen(wx.Pen("#ff8030"))
  32         self.DrawLine((-30, 5), (30, 5))
  33
  34         self.SetDrawnPen(wx.Pen("#00ee10"))
  35         self.DrawRoundedRectangle((-20, 10, 40, 10), 5)
  36
  37         self.SetDrawnPen(wx.Pen("#9090f0"))
  38         self.DrawEllipse((-30, 25, 60, 20))
  39
  40         self.SetDrawnTextColour(wx.BLACK)
  41         self.SetDrawnFont(wx.Font(8, wx.SWISS, wx.NORMAL, wx.NORMAL))
  42         self.DrawText("DrawText", (-26, 28))
  43
  44         self.SetDrawnBrush(wx.GREEN_BRUSH)
  45         self.DrawPolygon([(-100, 5), (-45, 30), (-35, 20), (-30, 5)])
  46
  47         self.SetDrawnPen(wx.BLACK_PEN)
  48         self.DrawLines([(30, -45), (40, -45), (40 ,45), (30, 45)])
  49
  50         # Make sure to call CalculateSize when all drawing is done
  51         self.CalculateSize()
  52
  53 #----------------------------------------------------------------------
  54
  55 class DiamondShape(ogl.PolygonShape):
  56     def __init__(self, w=0.0, h=0.0):
  57         ogl.PolygonShape.__init__(self)
  58         if w == 0.0:
  59             w = 60.0
  60         if h == 0.0:
  61             h = 60.0
  62
  63         points = [ (0.0,    -h/2.0),
  64                    (w/2.0,  0.0),
  65                    (0.0,    h/2.0),
  66                    (-w/2.0, 0.0),
  67                    ]
  68
  69         self.Create(points)
  70
  71
  72 #----------------------------------------------------------------------
  73
  74 class RoundedRectangleShape(ogl.RectangleShape):
  75     def __init__(self, w=0.0, h=0.0):
  76         ogl.RectangleShape.__init__(self, w, h)
  77         self.SetCornerRadius(-0.3)
  78
  79
  80 #----------------------------------------------------------------------
  81
  82 class CompositeDivisionShape(ogl.CompositeShape):
  83     def __init__(self, canvas):
  84         ogl.CompositeShape.__init__(self)
  85
  86         self.SetCanvas(canvas)
  87
  88         # create a division in the composite
  89         self.MakeContainer()
  90
  91         # add a shape to the original division
  92         shape2 = ogl.RectangleShape(40, 60)
  93         self.GetDivisions()[0].AddChild(shape2)
  94
  95         # now divide the division so we get 2
  96         self.GetDivisions()[0].Divide(wx.HORIZONTAL)
  97
  98         # and add a shape to the second division (and move it to the
  99         # centre of the division)
 100         shape3 = ogl.CircleShape(40)
 101         shape3.SetBrush(wx.CYAN_BRUSH)
 102         self.GetDivisions()[1].AddChild(shape3)
 103         shape3.SetX(self.GetDivisions()[1].GetX())
 104
 105         for division in self.GetDivisions():
 106             division.SetSensitivityFilter(0)
 107
 108 #----------------------------------------------------------------------
 109
 110 class CompositeShape(ogl.CompositeShape):
 111     def __init__(self, canvas):
 112         ogl.CompositeShape.__init__(self)
 113
 114         self.SetCanvas(canvas)
 115
 116         constraining_shape = ogl.RectangleShape(120, 100)
 117         constrained_shape1 = ogl.CircleShape(50)
 118         constrained_shape2 = ogl.RectangleShape(80, 20)
 119
 120         constraining_shape.SetBrush(wx.BLUE_BRUSH)
 121         constrained_shape2.SetBrush(wx.RED_BRUSH)
 122
 123         self.AddChild(constraining_shape)
 124         self.AddChild(constrained_shape1)
 125         self.AddChild(constrained_shape2)
 126
 127         constraint = ogl.Constraint(ogl.CONSTRAINT_MIDALIGNED_BOTTOM, constraining_shape, [constrained_shape1, constrained_shape2])
 128         self.AddConstraint(constraint)
 129         self.Recompute()
 130
 131         # If we don't do this, the shapes will be able to move on their
 132         # own, instead of moving the composite
 133         constraining_shape.SetDraggable(False)
 134         constrained_shape1.SetDraggable(False)
 135         constrained_shape2.SetDraggable(False)
 136
 137         # If we don't do this the shape will take all left-clicks for itself
 138         constraining_shape.SetSensitivityFilter(0)
 139
 140
 141 #----------------------------------------------------------------------
 142
 143 class DividedShape(ogl.DividedShape):
 144     def __init__(self, width, height, canvas):
 145         ogl.DividedShape.__init__(self, width, height)
 146
 147         region1 = ogl.ShapeRegion()
 148         region1.SetText('DividedShape')
 149         region1.SetProportions(0.0, 0.2)
 150         region1.SetFormatMode(ogl.FORMAT_CENTRE_HORIZ)
 151         self.AddRegion(region1)
 152
 153         region2 = ogl.ShapeRegion()
 154         region2.SetText('This is Region number two.')
 155         region2.SetProportions(0.0, 0.3)
 156         region2.SetFormatMode(ogl.FORMAT_CENTRE_HORIZ|ogl.FORMAT_CENTRE_VERT)
 157         self.AddRegion(region2)
 158
 159         region3 = ogl.ShapeRegion()
 160         region3.SetText('Region 3\nwith embedded\nline breaks')
 161         region3.SetProportions(0.0, 0.5)
 162         region3.SetFormatMode(ogl.FORMAT_NONE)
 163         self.AddRegion(region3)
 164
 165         self.SetRegionSizes()
 166         self.ReformatRegions(canvas)
 167
 168
 169     def ReformatRegions(self, canvas=None):
 170         rnum = 0
 171
 172         if canvas is None:
 173             canvas = self.GetCanvas()
 174
 175         dc = wx.ClientDC(canvas)  # used for measuring
 176
 177         for region in self.GetRegions():
 178             text = region.GetText()
 179             self.FormatText(dc, text, rnum)
 180             rnum += 1
 181
 182
 183     def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
 184         print "***", self
 185         ogl.DividedShape.OnSizingEndDragLeft(self, pt, x, y, keys, attch)
 186         self.SetRegionSizes()
 187         self.ReformatRegions()
 188         self.GetCanvas().Refresh()
 189
 190
 191 #----------------------------------------------------------------------
 192
 193 class MyEvtHandler(ogl.ShapeEvtHandler):
 194     def __init__(self, log, frame):
 195         ogl.ShapeEvtHandler.__init__(self)
 196         self.log = log
 197         self.statbarFrame = frame
 198
 199     def UpdateStatusBar(self, shape):
 200         x, y = shape.GetX(), shape.GetY()
 201         width, height = shape.GetBoundingBoxMax()
 202         self.statbarFrame.SetStatusText("Pos: (%d, %d)  Size: (%d, %d)" %
 203                                         (x, y, width, height))
 204
 205
 206     def OnLeftClick(self, x, y, keys=0, attachment=0):
 207         shape = self.GetShape()
 208         canvas = shape.GetCanvas()
 209         dc = wx.ClientDC(canvas)
 210         canvas.PrepareDC(dc)
 211
 212         if shape.Selected():
 213             shape.Select(False, dc)
 214             canvas.Redraw(dc)
 215         else:
 216             redraw = False
 217             shapeList = canvas.GetDiagram().GetShapeList()
 218             toUnselect = []
 219
 220             for s in shapeList:
 221                 if s.Selected():
 222                     # If we unselect it now then some of the objects in
 223                     # shapeList will become invalid (the control points are
 224                     # shapes too!) and bad things will happen...
 225                     toUnselect.append(s)
 226
 227             shape.Select(True, dc)
 228
 229             if toUnselect:
 230                 for s in toUnselect:
 231                     s.Select(False, dc)
 232
 233                 canvas.Redraw(dc)
 234
 235         self.UpdateStatusBar(shape)
 236
 237
 238     def OnEndDragLeft(self, x, y, keys=0, attachment=0):
 239         shape = self.GetShape()
 240         ogl.ShapeEvtHandler.OnEndDragLeft(self, x, y, keys, attachment)
 241
 242         if not shape.Selected():
 243             self.OnLeftClick(x, y, keys, attachment)
 244
 245         self.UpdateStatusBar(shape)
 246
 247
 248     def OnSizingEndDragLeft(self, pt, x, y, keys, attch):
 249         ogl.ShapeEvtHandler.OnSizingEndDragLeft(self, pt, x, y, keys, attch)
 250         self.UpdateStatusBar(self.GetShape())
 251
 252
 253     def OnMovePost(self, dc, x, y, oldX, oldY, display):
 254         ogl.ShapeEvtHandler.OnMovePost(self, dc, x, y, oldX, oldY, display)
 255         self.UpdateStatusBar(self.GetShape())
 256
 257
 258     def OnRightClick(self, *dontcare):
 259         self.log.WriteText("%s\n" % self.GetShape())
 260
 261
 262 #----------------------------------------------------------------------
 263
 264 class TestWindow(ogl.ShapeCanvas):
 265     def __init__(self, parent, log, frame):
 266         ogl.ShapeCanvas.__init__(self, parent)
 267
 268         maxWidth  = 1000
 269         maxHeight = 1000
 270         self.SetScrollbars(20, 20, maxWidth/20, maxHeight/20)
 271
 272         self.log = log
 273         self.frame = frame
 274         self.SetBackgroundColour("LIGHT BLUE") #wx.WHITE)
 275         self.diagram = ogl.Diagram()
 276         self.SetDiagram(self.diagram)
 277         self.diagram.SetCanvas(self)
 278         self.shapes = []
 279         self.save_gdi = []
 280
 281         rRectBrush = wx.Brush("MEDIUM TURQUOISE", wx.SOLID)
 282         dsBrush = wx.Brush("WHEAT", wx.SOLID)
 283
 284         self.MyAddShape(
 285             CompositeDivisionShape(self),
 286             270, 310, wx.BLACK_PEN, wx.BLUE_BRUSH, "Division"
 287             )
 288
 289         self.MyAddShape(
 290             CompositeShape(self),
 291             100, 260, wx.BLACK_PEN, wx.RED_BRUSH, "Composite"
 292             )
 293
 294         self.MyAddShape(
 295             ogl.CircleShape(80),
 296             75, 110, wx.Pen(wx.BLUE, 3), wx.GREEN_BRUSH, "Circle"
 297             )
 298
 299         self.MyAddShape(
 300             ogl.TextShape(120, 45),
 301             160, 35, wx.GREEN_PEN, wx.LIGHT_GREY_BRUSH, "OGL is now a\npure Python lib!"
 302             )
 303
 304         self.MyAddShape(
 305             ogl.RectangleShape(85, 50),
 306             305, 60, wx.BLACK_PEN, wx.LIGHT_GREY_BRUSH, "Rectangle"
 307             )
 308
 309         self.MyAddShape(
 310             DrawnShape(),
 311             500, 80, wx.BLACK_PEN, wx.BLACK_BRUSH, "DrawnShape"
 312             )
 313
 314         ds = self.MyAddShape(
 315             DividedShape(140, 150, self),
 316             520, 265, wx.BLACK_PEN, dsBrush, ''
 317             )
 318
 319         self.MyAddShape(
 320             DiamondShape(90, 90),
 321             355, 260, wx.Pen(wx.BLUE, 3, wx.DOT), wx.RED_BRUSH, "Polygon"
 322             )
 323
 324         self.MyAddShape(
 325             RoundedRectangleShape(95, 70),
 326             345, 145, wx.Pen(wx.RED, 2), rRectBrush, "Rounded Rect"
 327             )
 328
 329         bmp = images.getTest2Bitmap()
 330         mask = wx.Mask(bmp, wx.BLUE)
 331         bmp.SetMask(mask)
 332
 333         s = ogl.BitmapShape()
 334         s.SetBitmap(bmp)
 335         self.MyAddShape(s, 225, 130, None, None, "Bitmap")
 336
 337         dc = wx.ClientDC(self)
 338         self.PrepareDC(dc)
 339
 340         for x in range(len(self.shapes)):
 341             fromShape = self.shapes[x]
 342             if x+1 == len(self.shapes):
 343                 toShape = self.shapes[0]
 344             else:
 345                 toShape = self.shapes[x+1]
 346
 347             line = ogl.LineShape()
 348             line.SetCanvas(self)
 349             line.SetPen(wx.BLACK_PEN)
 350             line.SetBrush(wx.BLACK_BRUSH)
 351             line.AddArrow(ogl.ARROW_ARROW)
 352             line.MakeLineControlPoints(2)
 353             fromShape.AddLine(line, toShape)
 354             self.diagram.AddShape(line)
 355             line.Show(True)
 356
 357
 358     def MyAddShape(self, shape, x, y, pen, brush, text):
 359         # Composites have to be moved for all children to get in place
 360         if isinstance(shape, ogl.CompositeShape):
 361             dc = wx.ClientDC(self)
 362             self.PrepareDC(dc)
 363             shape.Move(dc, x, y)
 364         else:
 365             shape.SetDraggable(True, True)
 366         shape.SetCanvas(self)
 367         shape.SetX(x)
 368         shape.SetY(y)
 369         if pen:    shape.SetPen(pen)
 370         if brush:  shape.SetBrush(brush)
 371         if text:
 372             for line in text.split('\n'):
 373                 shape.AddText(line)
 374         #shape.SetShadowMode(ogl.SHADOW_RIGHT)
 375         self.diagram.AddShape(shape)
 376         shape.Show(True)
 377
 378         evthandler = MyEvtHandler(self.log, self.frame)
 379         evthandler.SetShape(shape)
 380         evthandler.SetPreviousHandler(shape.GetEventHandler())
 381         shape.SetEventHandler(evthandler)
 382
 383         self.shapes.append(shape)
 384         return shape
 385
 386
 387     def OnBeginDragLeft(self, x, y, keys):
 388         self.log.write("OnBeginDragLeft: %s, %s, %s\n" % (x, y, keys))
 389
 390     def OnEndDragLeft(self, x, y, keys):
 391         self.log.write("OnEndDragLeft: %s, %s, %s\n" % (x, y, keys))
 392
 393
 394 #----------------------------------------------------------------------
 395
 396 def runTest(frame, nb, log):
 397     # This creates some pens and brushes that the OGL library uses.
 398     # It should be called after the app object has been created, but
 399     # before OGL is used.
 400     ogl.OGLInitialize()
 401
 402     win = TestWindow(nb, log, frame)
 403     return win
 404
 405 #----------------------------------------------------------------------
 406
 407
 408 overview = """<html><body>
 409 <h2>Object Graphics Library</h2>
 410
 411 The Object Graphics Library is a library supporting the creation and
 412 manipulation of simple and complex graphic images on a canvas.
 413
 414 <p>The OGL library was originally written in C++ and provided to
 415 wxPython via an extension module wrapper as is most of the rest of
 416 wxPython.  The code has now been ported to Python (with many thanks to
 417 Pierre Hjälm!) in order to make it be more easily maintainable and
 418 less likely to get rusty because nobody cares about the C++ lib any
 419 more.
 420
 421 """
 422
 423 if __name__ == '__main__':
 424     import sys, os
 425     import run
 426     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
 427