wxPython/demo/ColourDB.py

   1
   2 from wxPython.wx import *
   3 from wxPython.lib import colourdb
   4
   5 import images
   6
   7
   8 # This loads a whole bunch of new color names and values
   9 # into wxTheColourDatabase
  10
  11 colourdb.updateColourDB()
  12
  13 #----------------------------------------------------------------------
  14
  15 class TestWindow(wxScrolledWindow):
  16     def __init__(self, parent):
  17         wxScrolledWindow.__init__(self, parent, -1)
  18
  19         self.clrList = colourdb.getColourList()
  20         #self.clrList.sort()
  21         self.bg_bmp = images.getGridBGBitmap()
  22
  23         EVT_PAINT(self, self.OnPaint)
  24         EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
  25         #self.SetBackgroundColour("WHITE")
  26
  27         self.font = wxFont(10, wxSWISS, wxNORMAL, wxNORMAL)
  28         dc = wxClientDC(self)
  29         dc.SetFont(self.font)
  30
  31         w,h,d,e = dc.GetFullTextExtent("Wy") # a wide character and one that decends
  32         self.textHeight = h + d
  33         self.lineHeight = self.textHeight + 5
  34         self.cellWidth = w
  35
  36         numCells = 24
  37         self.SetScrollbars(self.cellWidth, self.lineHeight, numCells, len(self.clrList) + 2)
  38
  39
  40     def TileBackground(self, dc):
  41         # tile the background bitmap
  42         sz = self.GetClientSize()
  43         w = self.bg_bmp.GetWidth()
  44         h = self.bg_bmp.GetHeight()
  45
  46         # adjust for scrolled position
  47         spx, spy = self.GetScrollPixelsPerUnit()
  48         vsx, vsy = self.GetViewStart()
  49         dx,  dy  = (spx * vsx) % w, (spy * vsy) % h
  50
  51         x = -dx
  52         while x < sz.width:
  53             y = -dy
  54             while y < sz.height:
  55                 dc.DrawBitmap(self.bg_bmp, x, y)
  56                 y = y + h
  57             x = x + w
  58
  59
  60     def OnEraseBackground(self, evt):
  61         dc = evt.GetDC()
  62         if not dc:
  63             dc = wxClientDC(self)
  64             rect = self.GetUpdateRegion().GetBox()
  65             dc.SetClippingRegion(rect.x, rect.y, rect.width, rect.height)
  66         self.TileBackground(dc)
  67
  68
  69     def OnPaint(self, evt):
  70         dc = wxPaintDC(self)
  71         self.PrepareDC(dc)
  72         self.Draw(dc, self.GetUpdateRegion(), self.GetViewStart())
  73
  74
  75     def Draw(self, dc, rgn=None, vs=None):
  76         dc.BeginDrawing()
  77         dc.SetTextForeground("BLACK")
  78         dc.SetPen(wxPen("BLACK", 1, wxSOLID))
  79         dc.SetFont(self.font)
  80         colours = self.clrList
  81         numColours = len(colours)
  82
  83         if rgn:
  84             # determine the subset that has been exposed and needs drawn
  85             rect = rgn.GetBox()
  86             pixStart = vs[1]*self.lineHeight + rect.y
  87             pixStop  = pixStart + rect.height
  88             start = pixStart / self.lineHeight - 1
  89             stop = pixStop / self.lineHeight
  90         else:
  91             start = 0
  92             stop = numColours
  93
  94         for line in range(max(0,start), min(stop,numColours)):
  95             clr = colours[line]
  96             y = (line+1) * self.lineHeight + 2
  97             dc.DrawText(clr, self.cellWidth, y)
  98
  99             brush = wxBrush(clr, wxSOLID)
 100             dc.SetBrush(brush)
 101             dc.DrawRectangle(12 * self.cellWidth, y, 6 * self.cellWidth, self.textHeight)
 102
 103         dc.EndDrawing()
 104
 105
 106 # On wxGTK there needs to be a panel under wxScrolledWindows if they are
 107 # going to be in a wxNotebook...
 108 class TestPanel(wxPanel):
 109     def __init__(self, parent):
 110         wxPanel.__init__(self, parent, -1)
 111         self.win = TestWindow(self)
 112         EVT_SIZE(self, self.OnSize)
 113
 114     def OnSize(self, evt):
 115         self.win.SetSize(evt.GetSize())
 116
 117
 118
 119 #----------------------------------------------------------------------
 120
 121
 122 def runTest(frame, nb, log):
 123     win = TestPanel(nb)
 124     return win
 125
 126 #----------------------------------------------------------------------
 127
 128 overview = """
 129 """