-from wxPython.wx import *
-from wxPython.lib import colourdb
+import wx
+import wx.lib.colourdb
import images
-# This loads a whole bunch of new color names and values
-# into wxTheColourDatabase
-
-colourdb.updateColourDB()
-
#----------------------------------------------------------------------
-class TestWindow(wxScrolledWindow):
+class TestWindow(wx.ScrolledWindow):
def __init__(self, parent):
- wxScrolledWindow.__init__(self, parent, -1)
+ wx.ScrolledWindow.__init__(self, parent, -1)
+
+ # Populate our color list
+ self.clrList = wx.lib.colourdb.getColourInfoList()
- self.clrList = colourdb.getColourList()
+ # Just for style points, we'll use this as a background image.
self.bg_bmp = images.getGridBGBitmap()
- EVT_PAINT(self, self.OnPaint)
- EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
+ # 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)
- self.font = wxFont(10, wxSWISS, wxNORMAL, wxNORMAL)
- dc = wxClientDC(self)
+ # Create drawing area and set its font
+ dc = wx.ClientDC(self)
dc.SetFont(self.font)
- w,h,d,e = dc.GetFullTextExtent("Wy") # a wide character and one that decends
+ # 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
- self.SetScrollbars(self.cellWidth, self.lineHeight, numCells, len(self.clrList) + 2)
-
-
+
+ # '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):
- # tile the background bitmap
sz = self.GetClientSize()
w = self.bg_bmp.GetWidth()
h = self.bg_bmp.GetHeight()
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
+ x = x + w
+ # Redraw the background over a 'damaged' area.
def OnEraseBackground(self, evt):
dc = evt.GetDC()
+
if not dc:
- dc = wxClientDC(self)
+ dc = wx.ClientDC(self)
+ rect = self.GetUpdateRegion().GetBox()
+ dc.SetClippingRect(rect)
+
self.TileBackground(dc)
def OnPaint(self, evt):
- dc = wxPaintDC(self)
+ dc = wx.PaintDC(self)
self.PrepareDC(dc)
self.Draw(dc, self.GetUpdateRegion(), self.GetViewStart())
def Draw(self, dc, rgn=None, vs=None):
- dc.BeginDrawing()
dc.SetTextForeground("BLACK")
- dc.SetPen(wxPen("BLACK", 1, wxSOLID))
+ dc.SetPen(wx.Pen("BLACK", 1, wx.SOLID))
dc.SetFont(self.font)
colours = self.clrList
numColours = len(colours)
if rgn:
- # determine the subset that have been exposed and needs drawn
+ # 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
stop = pixStop / self.lineHeight
else:
start = 0
- stop = len(numColours)
+ stop = numColours
for line in range(max(0,start), min(stop,numColours)):
- clr = colours[line]
+ clr = colours[line][0]
y = (line+1) * self.lineHeight + 2
+
dc.DrawText(clr, self.cellWidth, y)
- brush = wxBrush(clr, wxSOLID)
+ brush = wx.Brush(clr, wx.SOLID)
dc.SetBrush(brush)
- dc.DrawRectangle(12 * self.cellWidth, y, 6 * self.cellWidth, self.textHeight)
+ 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)
+
- dc.EndDrawing()
+ def OnSize(self, evt):
+ self.win.SetSize(evt.GetSize())
def runTest(frame, nb, log):
- win = TestWindow(nb)
+ # 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