wxPython/demo/FloatCanvas.py

   1
   2 import  wx
   3
   4 # Stuff to integrate FloatCanvas into wxPython Demo
   5 try:
   6     import Numeric
   7     haveNumeric = True
   8 except ImportError:
   9     haveNumeric = False
  10
  11
  12 if not haveNumeric:
  13     errorText = """\
  14 The FloatCanvas requires the Numeric module:
  15 You can get it at:
  16      http://sourceforge.net/projects/numpy
  17 """
  18     def runTest(frame, nb, log):
  19         dlg = wx.MessageDialog(
  20                 frame, errorText, 'Sorry', wx.OK | wx.ICON_INFORMATION
  21                 )
  22
  23         dlg.ShowModal()
  24         dlg.Destroy()
  25
  26     overview = ""
  27
  28 else:
  29     from wxPython.lib import floatcanvas
  30     import wxPython.lib.colourdb
  31
  32     ID_ABOUT_MENU = wx.NewId()
  33     ID_EXIT_MENU  = wx.NewId()
  34     ID_ZOOM_TO_FIT_MENU = wx.NewId()
  35     ID_DRAWTEST_MENU = wx.NewId()
  36     ID_LINETEST_MENU = wx.NewId()
  37     ID_DRAWMAP_MENU = wx.NewId()
  38     ID_DRAWMAP2_MENU = wx.NewId()
  39     ID_CLEAR_MENU = wx.NewId()
  40
  41
  42     colors = []
  43     LineStyles = floatcanvas.draw_object.LineStyleList.keys()
  44
  45
  46
  47     class DrawFrame(wx.Frame):
  48
  49         """
  50
  51         A frame used for the FloatCanvas Demo
  52
  53         """
  54
  55         def __init__(self, parent, id, title, position, size):
  56             wx.Frame.__init__(self,parent, id,title,position, size)
  57
  58             # Set up the MenuBar
  59
  60             MenuBar = wx.MenuBar()
  61
  62             file_menu = wx.Menu()
  63             file_menu.Append(ID_EXIT_MENU, "&Close","Close this frame")
  64             self.Bind(wx.EVT_MENU, self.OnQuit, id=ID_EXIT_MENU)
  65             MenuBar.Append(file_menu, "&File")
  66
  67             draw_menu = wx.Menu()
  68             draw_menu.Append(ID_DRAWTEST_MENU, "&Draw Test","Run a test of drawing random components")
  69             self.Bind(wx.EVT_MENU, self.DrawTest, id=ID_DRAWTEST_MENU)
  70             draw_menu.Append(ID_LINETEST_MENU, "&Line Test","Run a test of drawing random lines")
  71             self.Bind(wx.EVT_MENU, self.LineTest, id=ID_LINETEST_MENU)
  72             draw_menu.Append(ID_DRAWMAP_MENU, "Draw &Map","Run a test of drawing a map")
  73             self.Bind(wx.EVT_MENU, self.DrawMap, id=ID_DRAWMAP_MENU)
  74             draw_menu.Append(ID_CLEAR_MENU, "&Clear","Clear the Canvas")
  75             self.Bind(wx.EVT_MENU, self.Clear, id=ID_CLEAR_MENU)
  76             MenuBar.Append(draw_menu, "&Draw")
  77
  78             view_menu = wx.Menu()
  79             view_menu.Append(ID_ZOOM_TO_FIT_MENU, "Zoom to &Fit","Zoom to fit the window")
  80             self.Bind(wx.EVT_MENU, self.ZoomToFit, id=ID_ZOOM_TO_FIT_MENU)
  81             MenuBar.Append(view_menu, "&View")
  82
  83             help_menu = wx.Menu()
  84             help_menu.Append(ID_ABOUT_MENU, "&About",
  85                                     "More information About this program")
  86             self.Bind(wx.EVT_MENU, self.OnAbout, id=ID_ABOUT_MENU)
  87             MenuBar.Append(help_menu, "&Help")
  88
  89             self.SetMenuBar(MenuBar)
  90
  91             self.CreateStatusBar()
  92             self.SetStatusText("")
  93
  94             self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
  95
  96             # Other event handlers:
  97             self.Bind(wx.EVT_RIGHT_DOWN, self.RightButtonEvent)
  98
  99             # Add the Canvas
 100             self.Canvas = floatcanvas.FloatCanvas(self,-1,(500,500),
 101                                       ProjectionFun = 'FlatEarth',
 102                                       Debug = 0,
 103                                       EnclosingFrame = self,
 104                                       BackgroundColor = "DARK SLATE BLUE",
 105                                       UseBackground = 0,
 106                                       UseToolbar = 1)
 107             self.Show(True)
 108
 109             self.object_list = []
 110
 111             return None
 112
 113         def RightButtonEvent(self,event):
 114             print "Right Button has been clicked in DrawFrame"
 115             print "coords are: %i, %i"%(event.GetX(),event.GetY())
 116             event.Skip()
 117
 118         def OnAbout(self, event):
 119             dlg = wx.MessageDialog(self, "This is a small program to demonstrate\n"
 120                                                       "the use of the FloatCanvas\n",
 121                                                       "About Me", wx.OK | wx.ICON_INFORMATION)
 122             dlg.ShowModal()
 123             dlg.Destroy()
 124
 125         def SetMode(self,event):
 126             for id in [ID_ZOOM_IN_BUTTON,ID_ZOOM_OUT_BUTTON,ID_MOVE_MODE_BUTTON]:
 127                 self.ToolBar.ToggleTool(id,0)
 128
 129             self.ToolBar.ToggleTool(event.GetId(),1)
 130
 131             if event.GetId() == ID_ZOOM_IN_BUTTON:
 132                 self.Canvas.SetGUIMode("ZoomIn")
 133
 134             elif event.GetId() == ID_ZOOM_OUT_BUTTON:
 135                 self.Canvas.SetGUIMode("ZoomOut")
 136
 137             elif event.GetId() == ID_MOVE_MODE_BUTTON:
 138                 self.Canvas.SetGUIMode("Move")
 139
 140         def ZoomToFit(self,event):
 141             self.Canvas.ZoomToBB()
 142
 143         def Clear(self,event = None):
 144             self.Canvas.RemoveObjects(self.object_list)
 145             self.object_list = []
 146             self.Canvas.Draw()
 147
 148         def OnQuit(self,event):
 149             self.Close(True)
 150
 151         def OnCloseWindow(self, event):
 152             self.Destroy()
 153
 154         def DrawTest(self,event):
 155             wx.GetApp().Yield()
 156
 157             import random
 158             import RandomArray
 159
 160             Range = (-10,10)
 161
 162             Canvas = self.Canvas
 163             object_list = self.object_list
 164
 165             #           Random tests of everything:
 166
 167             # Rectangles
 168             for i in range(5):
 169                 x,y = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 170                 lw = random.randint(1,5)
 171                 cf = random.randint(0,len(colors)-1)
 172                 h = random.randint(1,5)
 173                 w = random.randint(1,5)
 174                 object_list.append(Canvas.AddRectangle(x,y,h,w,LineWidth = lw,FillColor = colors[cf]))
 175
 176                 # Ellipses
 177             for i in range(5):
 178                 x,y = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 179                 lw = random.randint(1,5)
 180                 cf = random.randint(0,len(colors)-1)
 181                 h = random.randint(1,5)
 182                 w = random.randint(1,5)
 183                 object_list.append(Canvas.AddEllipse(x,y,h,w,LineWidth = lw,FillColor = colors[cf]))
 184
 185                 # Dots
 186             for i in range(5):
 187                 x,y = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 188                 D = random.randint(1,50)
 189                 lw = random.randint(1,5)
 190                 cf = random.randint(0,len(colors)-1)
 191                 cl = random.randint(0,len(colors)-1)
 192                 object_list.append(Canvas.AddDot(x,y,D,LineWidth = lw,LineColor = colors[cl],FillColor = colors[cf]))
 193
 194                 # Circles
 195             for i in range(5):
 196                 x,y = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 197                 D = random.randint(1,5)
 198                 lw = random.randint(1,5)
 199                 cf = random.randint(0,len(colors)-1)
 200                 cl = random.randint(0,len(colors)-1)
 201                 object_list.append(Canvas.AddCircle(x,y,D,LineWidth = lw,LineColor = colors[cl],FillColor = colors[cf]))
 202                 self.object_list.append(self.Canvas.AddText("Circle # %i"%(i),x,y,Size = 12,BackGround = None,Position = "cc"))
 203
 204                 # Lines
 205             for i in range(5):
 206                 points = []
 207                 for j in range(random.randint(2,10)):
 208                     point = (random.randint(Range[0],Range[1]),random.randint(Range[0],Range[1]))
 209                     points.append(point)
 210                 lw = random.randint(1,10)
 211                 cf = random.randint(0,len(colors)-1)
 212                 cl = random.randint(0,len(colors)-1)
 213                 self.object_list.append(self.Canvas.AddLine(points, LineWidth = lw, LineColor = colors[cl]))
 214
 215                 # Polygons
 216             for i in range(3):
 217                 points = []
 218                 for j in range(random.randint(2,6)):
 219                     point = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 220                     points.append(point)
 221                 lw = random.randint(1,6)
 222                 cf = random.randint(0,len(colors)-1)
 223                 cl = random.randint(0,len(colors)-1)
 224                 self.object_list.append(self.Canvas.AddPolygon(points,
 225                                                                LineWidth = lw,
 226                                                                LineColor = colors[cl],
 227                                                                FillColor = colors[cf],
 228                                                                FillStyle = 'Solid'))
 229
 230
 231             ## Pointset
 232             for i in range(4):
 233                 points = []
 234                 points = RandomArray.uniform(Range[0],Range[1],(100,2))
 235                 cf = random.randint(0,len(colors)-1)
 236                 D = random.randint(1,4)
 237                 self.object_list.append(self.Canvas.AddPointSet(points, Color = colors[cf], Diameter = D))
 238
 239             # Text
 240             String = "Some text"
 241             for i in range(10):
 242                 ts = random.randint(10,40)
 243                 cf = random.randint(0,len(colors)-1)
 244                 x,y = (random.uniform(Range[0],Range[1]),random.uniform(Range[0],Range[1]))
 245                 self.object_list.append(self.Canvas.AddText(String,x,y,Size = ts,ForeGround = colors[cf],Position = "cc"))
 246
 247             self.Canvas.ZoomToBB()
 248
 249         def DrawMap(self,event = None):
 250             wx.GetApp().Yield()
 251             import os, time
 252         ## Test of Actual Map Data
 253             self.Clear()
 254             start = time.clock()
 255             Shorelines = Read_MapGen(os.path.join("data",'world.dat'),stats = 0)
 256             print "It took %f seconds to load %i shorelines"%(time.clock() - start,len(Shorelines) )
 257             start = time.clock()
 258             for segment in Shorelines:
 259                 self.object_list.append(self.Canvas.AddLine(segment))
 260             print "It took %f seconds to add %i shorelines"%(time.clock() - start,len(Shorelines) )
 261             start = time.clock()
 262             self.Canvas.ZoomToBB()
 263             print "It took %f seconds to draw %i shorelines"%(time.clock() - start,len(Shorelines) )
 264
 265     ##    def LineTest(self,event = None):
 266     ##        wxGetApp().Yield()
 267     ##        import os, time
 268     ##        import random
 269     ##        Range = (-10,10)
 270     ##    ## Test of drawing lots of lines
 271     ##        self.Clear()
 272     ##        start = time.clock()
 273     ##        linepoints = []
 274     ##        linecolors = []
 275     ##        linewidths = []
 276     ##        linestyles = []
 277     ##        for i in range(500):
 278     ##            points = (random.randint(Range[0],Range[1]),
 279     ##                     random.randint(Range[0],Range[1]))
 280     ##            linepoints.append(points)
 281     ##            points = (random.randint(Range[0],Range[1]),
 282     ##                     random.randint(Range[0],Range[1]))
 283     ##            linepoints.append(points)
 284     ##            linewidths.append(random.randint(1,10) )
 285     ##            linecolors.append(colors[random.randint(0,len(colors)-1) ])
 286     ##            linestyles.append(LineStyles[random.randint(0, len(LineStyles)-1)])
 287
 288     ##        self.object_list.append(self.Canvas.AddLineSet(linepoints, LineWidths = linewidths, LineColors = linecolors, LineStyles = linestyles))
 289     ##        print "It took %f seconds to add %i lines"%(time.clock() - start,len(linepoints) )
 290     ##        start = time.clock()
 291     ##        self.Canvas.ZoomToBB()
 292     ##        print "It took %f seconds to draw %i lines"%(time.clock() - start,len(linepoints) )
 293
 294         def LineTest(self,event = None):
 295             wx.GetApp().Yield()
 296             import os, time
 297             import random
 298             Range = (-10,10)
 299         ## Test of drawing lots of lines
 300             self.Clear()
 301             start = time.clock()
 302             linepoints = []
 303             linecolors = []
 304             linewidths = []
 305             for i in range(2000):
 306                 points = (random.randint(Range[0],Range[1]),
 307                          random.randint(Range[0],Range[1]),
 308                          random.randint(Range[0],Range[1]),
 309                          random.randint(Range[0],Range[1]))
 310                 linepoints.append(points)
 311                 linewidths.append(random.randint(1,10) )
 312                 linecolors.append(random.randint(0,len(colors)-1) )
 313             for (points,color,width) in zip(linepoints,linecolors,linewidths):
 314                 self.object_list.append(self.Canvas.AddLine((points[0:2],points[2:4]), LineWidth = width, LineColor = colors[color]))
 315             print "It took %f seconds to add %i lines"%(time.clock() - start,len(linepoints) )
 316             start = time.clock()
 317             self.Canvas.ZoomToBB()
 318             print "It took %f seconds to draw %i lines"%(time.clock() - start,len(linepoints) )
 319
 320     class DemoApp(wx.App):
 321         """
 322         How the demo works:
 323
 324         Under the Draw menu, there are three options:
 325
 326         *Draw Test: will put up a picture of a bunch of randomly generated
 327         objects, of each kind supported.
 328
 329         *Draw Map: will draw a map of the world. Be patient, it is a big map,
 330         with a lot of data, and will take a while to load and draw (about 10 sec
 331         on my 450Mhz PIII). Redraws take about 2 sec. This demonstrates how the
 332         performance is not very good for large drawings.
 333
 334         *Clear: Clears the Canvas.
 335
 336         Once you have a picture drawn, you can zoom in and out and move about
 337         the picture. There is a tool bar with three tools that can be
 338         selected.
 339
 340         The magnifying glass with the plus is the zoom in tool. Once selected,
 341         if you click the image, it will zoom in, centered on where you
 342         clicked. If you click and drag the mouse, you will get a rubber band
 343         box, and the image will zoom to fit that box when you release it.
 344
 345         The magnifying glass with the minus is the zoom out tool. Once selected,
 346         if you click the image, it will zoom out, centered on where you
 347         clicked. (note that this takes a while when you are looking at the map,
 348         as it has a LOT of lines to be drawn. The image is double buffered, so
 349         you don't see the drawing in progress)
 350
 351         The hand is the move tool. Once selected, if you click and drag on the
 352         image, it will move so that the part you clicked on ends up where you
 353         release the mouse. Nothing is changed while you are dragging. The
 354         drawing is too slow for that.
 355
 356         I'd like the cursor to change as you change tools, but the stock
 357         wxCursors didn't include anything I liked, so I stuck with the
 358         pointer. Please let me know if you have any nice cursor images for me to
 359         use.
 360
 361
 362         Any bugs, comments, feedback, questions, and especially code are welcome:
 363
 364         -Chris Barker
 365
 366         Chris.Barker@noaa.gov
 367
 368         """
 369
 370         def OnInit(self):
 371             global colors
 372             wxPython.lib.colourdb.updateColourDB()
 373             colors = wxPython.lib.colourdb.getColourList()
 374
 375             frame = DrawFrame(None, -1, "FloatCanvas Demo App",
 376                               wx.DefaultPosition, (700,700))
 377
 378             self.SetTopWindow(frame)
 379
 380             return True
 381
 382     def Read_MapGen(filename,stats = 0,AllLines=0):
 383         """
 384         This function reads a MapGen Format file, and
 385         returns a list of NumPy arrays with the line segments in them.
 386
 387         Each NumPy array in the list is an NX2 array of Python Floats.
 388
 389         The demo should have come with a file, "world.dat" that is the
 390         shorelines of the whole world, in MapGen format.
 391
 392         """
 393         import string
 394         from Numeric import array
 395         file = open(filename,'rt')
 396         data = file.readlines()
 397         data = map(string.strip,data)
 398
 399         Shorelines = []
 400         segment = []
 401         for line in data:
 402             if line:
 403                 if line == "# -b": #New segment beginning
 404                     if segment: Shorelines.append(array(segment))
 405                     segment = []
 406                 else:
 407                     segment.append(map(float,string.split(line)))
 408         if segment: Shorelines.append(array(segment))
 409
 410         if stats:
 411             NumSegments = len(Shorelines)
 412             NumPoints = 0
 413             for segment in Shorelines:
 414                 NumPoints = NumPoints + len(segment)
 415             AvgPoints = NumPoints / NumSegments
 416             print "Number of Segments: ", NumSegments
 417             print "Average Number of Points per segment: ",AvgPoints
 418         if AllLines:
 419             Lines = []
 420             for segment in Shorelines:
 421                 Lines.append(segment[0])
 422                 for point in segment[1:-1]:
 423                     Lines.append(point)
 424                     Lines.append(point)
 425                 Lines.append(segment[-1])
 426             #print Shorelines
 427             #for point in Lines: print point
 428             return Lines
 429         else:
 430             return Shorelines
 431
 432
 433     #----------------------------------------------------------------------
 434
 435     def runTest(frame, nb, log):
 436         """
 437         This method is used by the wxPython Demo Framework for integrating
 438         this demo with the rest.
 439         """
 440         global colors
 441         wxPython.lib.colourdb.updateColourDB()
 442         colors = wxPython.lib.colourdb.getColourList()
 443
 444         win = DrawFrame(None, -1, "FloatCanvas Drawing Window",
 445                         wx.DefaultPosition, (500,500))
 446         frame.otherWin = win
 447         win.Show(True)
 448
 449
 450
 451
 452     ## for the wxPython demo:
 453     overview = floatcanvas.FloatCanvas.__doc__
 454
 455
 456
 457 if __name__ == "__main__":
 458     if not haveNumeric:
 459         print errorText
 460     else:
 461         app = DemoApp(0)
 462
 463         import  wx.lib.colourdb
 464         wx.lib.colourdb.updateColourDB()
 465         colors = wx.lib.colourdb.getColourList()
 466
 467         app.MainLoop()
 468
 469
 470
 471