utils/wxPython/demo/wxScrolledWindow.py

   1
   2 from wxPython.wx import *
   3
   4 #---------------------------------------------------------------------------
   5
   6 class MyCanvas(wxScrolledWindow):
   7     def __init__(self, parent, id = -1, size = wxDefaultSize):
   8         wxScrolledWindow.__init__(self, parent, id, wxPoint(0, 0), size, wxSUNKEN_BORDER)
   9
  10         self.lines = []
  11         self.maxWidth  = 1000
  12         self.maxHeight = 1000
  13
  14         self.SetBackgroundColour(wxNamedColor("WHITE"))
  15         self.Connect(-1, -1, wxEVT_LEFT_DOWN, self.OnLeftButtonEvent)
  16         self.Connect(-1, -1, wxEVT_LEFT_UP,   self.OnLeftButtonEvent)
  17         self.Connect(-1, -1, wxEVT_MOTION,    self.OnLeftButtonEvent)
  18
  19         self.SetCursor(wxStockCursor(wxCURSOR_PENCIL))
  20         bmp = wxBitmap('bitmaps/test2.bmp', wxBITMAP_TYPE_BMP)
  21         mask = wxMaskColour(bmp, wxBLUE)
  22         bmp.SetMask(mask)
  23         self.bmp = bmp
  24
  25         self.SetScrollbars(20, 20, self.maxWidth/20, self.maxHeight/20)
  26
  27     def getWidth(self):
  28         return self.maxWidth
  29
  30     def getHeight(self):
  31         return self.maxHeight
  32
  33
  34     def OnPaint(self, event):
  35         dc = wxPaintDC(self)
  36         self.PrepareDC(dc)
  37         self.DoDrawing(dc)
  38
  39
  40     def DoDrawing(self, dc):
  41         dc.BeginDrawing()
  42         pen1 = wxPen(wxNamedColour('RED'))
  43         dc.SetPen(pen1)
  44         dc.DrawRectangle(5, 5, 50, 50)
  45
  46         dc.SetBrush(wxLIGHT_GREY_BRUSH)
  47         dc.SetPen(wxPen(wxNamedColour('BLUE'), 4))
  48         dc.DrawRectangle(15, 15, 50, 50)
  49
  50         font = wxFont(14, wxSWISS, wxNORMAL, wxNORMAL)
  51         dc.SetFont(font)
  52         dc.SetTextForeground(wxColour(0xFF, 0x20, 0xFF))
  53         te = dc.GetTextExtent("Hello World")
  54         dc.DrawText("Hello World", 60, 65)
  55
  56         dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4))
  57         dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1])
  58
  59         lst = [(100,110), (150,110), (150,160), (100,160)]
  60         dc.DrawLines(lst, -60)
  61         dc.SetPen(wxGREY_PEN)
  62         dc.DrawPolygon(lst, 75)
  63         dc.SetPen(wxGREEN_PEN)
  64         dc.DrawSpline(lst+[(100,100)])
  65
  66         dc.DrawBitmap(self.bmp, 200, 20, true)
  67         dc.SetTextForeground(wxColour(0, 0xFF, 0x80))
  68         dc.DrawText("a bitmap", 200, 85)
  69
  70         font = wxFont(20, wxSWISS, wxNORMAL, wxNORMAL)
  71         dc.SetFont(font)
  72         dc.SetTextForeground(wxBLACK)
  73         for a in range(0, 360, 45):
  74             dc.DrawRotatedText("Rotated text...", 300, 300, a)
  75
  76         dc.SetPen(wxTRANSPARENT_PEN)
  77         dc.SetBrush(wxBLUE_BRUSH)
  78         dc.DrawRectangle(50,500,50,50)
  79         dc.DrawRectangle(100,500,50,50)
  80
  81         #from wxPython import dch
  82         #dch.FillRect(dc, wxRect(50, 400, 50, 50), wxBLACK)
  83
  84         self.DrawSavedLines(dc)
  85         dc.EndDrawing()
  86
  87
  88
  89     def DrawSavedLines(self, dc):
  90         dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
  91         for line in self.lines:
  92             for coords in line:
  93                 apply(dc.DrawLine, coords)
  94
  95
  96     def SetXY(self, event):
  97         self.x, self.y = self.ConvertEventCoords(event)
  98
  99     def ConvertEventCoords(self, event):
 100         xView, yView = self.ViewStart()
 101         xDelta, yDelta = self.GetScrollPixelsPerUnit()
 102         return (event.GetX() + (xView * xDelta),
 103                 event.GetY() + (yView * yDelta))
 104
 105     def OnLeftButtonEvent(self, event):
 106         if event.LeftDown():
 107             self.SetXY(event)
 108             self.curLine = []
 109
 110         elif event.Dragging():
 111             dc = wxClientDC(self)
 112             self.PrepareDC(dc)
 113             dc.BeginDrawing()
 114             dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
 115             coords = (self.x, self.y) + self.ConvertEventCoords(event)
 116             self.curLine.append(coords)
 117             apply(dc.DrawLine, coords)
 118             self.SetXY(event)
 119             dc.EndDrawing()
 120
 121         elif event.LeftUp():
 122             self.lines.append(self.curLine)
 123             self.curLine = []
 124
 125 #---------------------------------------------------------------------------
 126
 127 def runTest(frame, nb, log):
 128     win = MyCanvas(nb)
 129     return win
 130
 131 #---------------------------------------------------------------------------
 132
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 143
 144
 145 overview = """\
 146 """