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         EVT_LEFT_DOWN(self, self.OnLeftButtonEvent)
  16         EVT_LEFT_UP(self,   self.OnLeftButtonEvent)
  17         EVT_MOTION(self,    self.OnLeftButtonEvent)
  18
  19         EVT_PAINT(self, self.OnPaint)
  20
  21
  22         self.SetCursor(wxStockCursor(wxCURSOR_PENCIL))
  23         bmp = wxBitmap('bitmaps/test2.bmp', wxBITMAP_TYPE_BMP)
  24         mask = wxMaskColour(bmp, wxBLUE)
  25         bmp.SetMask(mask)
  26         self.bmp = bmp
  27
  28         self.SetScrollbars(20, 20, self.maxWidth/20, self.maxHeight/20)
  29
  30     def getWidth(self):
  31         return self.maxWidth
  32
  33     def getHeight(self):
  34         return self.maxHeight
  35
  36
  37     def OnPaint(self, event):
  38         dc = wxPaintDC(self)
  39         self.PrepareDC(dc)
  40         self.DoDrawing(dc)
  41
  42
  43     def DoDrawing(self, dc):
  44         dc.BeginDrawing()
  45         pen1 = wxPen(wxNamedColour('RED'))
  46         dc.SetPen(pen1)
  47         dc.DrawRectangle(5, 5, 50, 50)
  48
  49         dc.SetBrush(wxLIGHT_GREY_BRUSH)
  50         dc.SetPen(wxPen(wxNamedColour('BLUE'), 4))
  51         dc.DrawRectangle(15, 15, 50, 50)
  52
  53         font = wxFont(14, wxSWISS, wxNORMAL, wxNORMAL)
  54         dc.SetFont(font)
  55         dc.SetTextForeground(wxColour(0xFF, 0x20, 0xFF))
  56         te = dc.GetTextExtent("Hello World")
  57         dc.DrawText("Hello World", 60, 65)
  58
  59         dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4))
  60         dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1])
  61
  62         lst = [(100,110), (150,110), (150,160), (100,160)]
  63         dc.DrawLines(lst, -60)
  64         dc.SetPen(wxGREY_PEN)
  65         dc.DrawPolygon(lst, 75)
  66         dc.SetPen(wxGREEN_PEN)
  67         dc.DrawSpline(lst+[(100,100)])
  68
  69         dc.DrawBitmap(self.bmp, 200, 20, true)
  70         dc.SetTextForeground(wxColour(0, 0xFF, 0x80))
  71         dc.DrawText("a bitmap", 200, 85)
  72
  73         font = wxFont(20, wxSWISS, wxNORMAL, wxNORMAL)
  74         dc.SetFont(font)
  75         dc.SetTextForeground(wxBLACK)
  76         for a in range(0, 360, 45):
  77             dc.DrawRotatedText("Rotated text...", 300, 300, a)
  78
  79         dc.SetPen(wxTRANSPARENT_PEN)
  80         dc.SetBrush(wxBLUE_BRUSH)
  81         dc.DrawRectangle(50,500,50,50)
  82         dc.DrawRectangle(100,500,50,50)
  83
  84         dc.SetPen(pen1)
  85         dc.DrawEllipticArc(200, 500, 50, 75, 0, 90)
  86
  87         #from wxPython import dch
  88         #dch.FillRect(dc, wxRect(50, 400, 50, 50), wxBLACK)
  89
  90         self.DrawSavedLines(dc)
  91         dc.EndDrawing()
  92
  93
  94
  95     def DrawSavedLines(self, dc):
  96         dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
  97         for line in self.lines:
  98             for coords in line:
  99                 apply(dc.DrawLine, coords)
 100
 101
 102     def SetXY(self, event):
 103         self.x, self.y = self.ConvertEventCoords(event)
 104
 105     def ConvertEventCoords(self, event):
 106         xView, yView = self.GetViewStart()
 107         xDelta, yDelta = self.GetScrollPixelsPerUnit()
 108         return (event.GetX() + (xView * xDelta),
 109                 event.GetY() + (yView * yDelta))
 110
 111     def OnLeftButtonEvent(self, event):
 112         if event.LeftDown():
 113             self.SetXY(event)
 114             self.curLine = []
 115             self.CaptureMouse()
 116
 117         elif event.Dragging():
 118             dc = wxClientDC(self)
 119             self.PrepareDC(dc)
 120             dc.BeginDrawing()
 121             dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
 122             coords = (self.x, self.y) + self.ConvertEventCoords(event)
 123             self.curLine.append(coords)
 124             apply(dc.DrawLine, coords)
 125             self.SetXY(event)
 126             dc.EndDrawing()
 127
 128         elif event.LeftUp():
 129             self.lines.append(self.curLine)
 130             self.curLine = []
 131             self.ReleaseMouse()
 132
 133 #---------------------------------------------------------------------------
 134
 135 def runTest(frame, nb, log):
 136     win = MyCanvas(nb)
 137     return win
 138
 139 #---------------------------------------------------------------------------
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 152
 153 overview = """\
 154 """