-
-import wx
-import wx.lib.colourdb
-
-import images
-
-
-#----------------------------------------------------------------------
-
-class TestWindow(wx.ScrolledWindow):
- def __init__(self, parent):
- wx.ScrolledWindow.__init__(self, parent, -1)
-
- # Populate our color list
- self.clrList = wx.lib.colourdb.getColourInfoList()
-
- # Just for style points, we'll use this as a background image.
- self.bg_bmp = images.getGridBGBitmap()
-
- # This could also be done by getting the window's default font;
- # either way, we need to have a font loaded for later on.
- #self.SetBackgroundColour("WHITE")
- self.font = wx.Font(10, wx.SWISS, wx.NORMAL, wx.NORMAL)
-
- # Create drawing area and set its font
- dc = wx.ClientDC(self)
- dc.SetFont(self.font)
-
- # Using GetFullTextExtent(), we calculate a basic 'building block'
- # that will be used to draw a depiction of the color list. We're
- # using 'Wy' as the model becuase 'W' is a wide character and 'y'
- # has a descender. This constitutes a 'worst case' scenario, which means
- # that no matter what we draw later, text-wise, we'll have room for it
- w,h,d,e = dc.GetFullTextExtent("Wy")
-
- # Height plus descender
- self.textHeight = h + d
-
- # Pad a little bit
- self.lineHeight = self.textHeight + 5
-
- # ... and this is the basic width.
- self.cellWidth = w
-
- # jmg 11/8/03: why 24?
- numCells = 24
-
- # 'prep' our scroll bars.
- self.SetScrollbars(
- self.cellWidth, self.lineHeight, numCells, len(self.clrList) + 2
- )
-
- # Event handlers - moved here so events won't fire before init is
- # finished.
- self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
- self.Bind(wx.EVT_PAINT, self.OnPaint)
- self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
-
-
- # tile the background bitmap loaded in __init__()
- def TileBackground(self, dc):
- sz = self.GetClientSize()
- w = self.bg_bmp.GetWidth()
- h = self.bg_bmp.GetHeight()
-
- # adjust for scrolled position
- spx, spy = self.GetScrollPixelsPerUnit()
- vsx, vsy = self.GetViewStart()
- dx, dy = (spx * vsx) % w, (spy * vsy) % h
-
- x = -dx
-
- while x < sz.width:
- y = -dy
- while y < sz.height:
- dc.DrawBitmap(self.bg_bmp, x, y)
- y = y + h
-
- x = x + w
-
- # Redraw the background over a 'damaged' area.
- def OnEraseBackground(self, evt):
- dc = evt.GetDC()
-
- if not dc:
- dc = wx.ClientDC(self)
- rect = self.GetUpdateRegion().GetBox()
- dc.SetClippingRect(rect)
-
- self.TileBackground(dc)
-
-
- def OnPaint(self, evt):
- dc = wx.PaintDC(self)
- self.PrepareDC(dc)
- self.Draw(dc, self.GetUpdateRegion(), self.GetViewStart())
-
-
- def Draw(self, dc, rgn=None, vs=None):
- dc.SetTextForeground("BLACK")
- dc.SetPen(wx.Pen("BLACK", 1, wx.SOLID))
- dc.SetFont(self.font)
- colours = self.clrList
- numColours = len(colours)
-
- if rgn:
- # determine the subset of the color list that has been exposed
- # and needs drawn. This is based on all the precalculation we
- # did in __init__()
- rect = rgn.GetBox()
- pixStart = vs[1]*self.lineHeight + rect.y
- pixStop = pixStart + rect.height
- start = pixStart / self.lineHeight - 1
- stop = pixStop / self.lineHeight
- else:
- start = 0
- stop = numColours
-
- for line in range(max(0,start), min(stop,numColours)):
- clr = colours[line][0]
- y = (line+1) * self.lineHeight + 2
-
- dc.DrawText(clr, self.cellWidth, y)
-
- brush = wx.Brush(clr, wx.SOLID)
- dc.SetBrush(brush)
- dc.DrawRectangle(10 * self.cellWidth, y,
- 6 * self.cellWidth, self.textHeight)
-
- dc.DrawText(str(tuple(colours[line][1:])),
- 18 * self.cellWidth, y)
-
-
-# On wxGTK there needs to be a panel under wx.ScrolledWindows if they are
-# going to be in a wxNotebook. And, in this demo, we are.
-class TestPanel(wx.Panel):
- def __init__(self, parent):
- wx.Panel.__init__(self, parent, -1)
- self.win = TestWindow(self)
- self.Bind(wx.EVT_SIZE, self.OnSize)
-
-
- def OnSize(self, evt):
- self.win.SetSize(evt.GetSize())
-
-
-
-#----------------------------------------------------------------------
-
-
-def runTest(frame, nb, log):
- # This loads a whole bunch of new color names and values
- # into TheColourDatabase
- #
- # Note 11/24/03 - jg - I moved this into runTest() because
- # there must be a wx.App existing before this function
- # can be called - this is a change from 2.4 -> 2.5.
- wx.lib.colourdb.updateColourDB()
-
- win = TestPanel(nb)
-
- return win
-
-#----------------------------------------------------------------------
-
-overview = """
-<html>
-<body>
-<B><font size=+2>ColourDB</font></b>
-
-<p>wxWindows maintains a database of standard RGB colours for a predefined
-set of named colours (such as "BLACK'', "LIGHT GREY''). The application
-may add to this set if desired by using Append. There is only one instance
-of this class: <b>TheColourDatabase</b>.
-
-<p>The <code>colourdb</code> library is a lightweight API that pre-defines
-a multitude of colors for you to use 'out of the box', and this demo serves
-to show you these colors (it also serves as a handy reference).
-
-<p>A secondary benefit of this demo is the use of the <b>ScrolledWindow</b> class
-and the use of various *DC() classes, including background tiling and the use of
-font data to generate a "building block" type of construct for repetitive use.
-
-<p>
-<B><font size=+2>Important note</font></b>
-
-<p>
-With implementation of V2.5 and later, it is required to have a wx.App already
-initialized before <b><code>wx.updateColourDB()</code></b> can be called.
-Trying to do otherwise will cause an exception to be raised.
-</body>
-</html>
-"""
-
-
-if __name__ == '__main__':
- import sys,os
- import run
- run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
-
projects / wxWidgets.git / blobdiff