为了把宋体字库做到rockbox上，我用otf2bdf把字库转换成bdf格式，再用rockbox的工具把bdf转换成其特有的字库格式，可是没有办法预览bdf字库的转换效果，很麻烦。于是就写了这个简单的程序。

{{{
#!python
# a BDF font viewer
import sys, os
import string
from   wxPython.wx import *

binstr=[
        "0000",
        "0001",
        "0010",
        "0011",
        "0100",
        "0101",
        "0110",
        "0111",
        "1000",
        "1001",
        "1010",
        "1011",
        "1100",
        "1101",
        "1110",
        "1111",
]  

fonts=[]

def OpenFont(fontfilename):
    global fonts
    fontfile = open(fontfilename)
    fonts =[]
    ishex =0
    font = ""
    for line in fontfile:
        if line == "BITMAP\n":
            ishex=1
            continue
        if line == "ENDCHAR\n":
            ishex=0
            fonts.append(font)
            font=""
            continue
        if ishex:
            font += line
    fontfile.close()
    print len(fonts)

class DrawPanel(wxPanel):
    def __init__(self, parent):
        wxPanel.__init__(self, parent, -1)
        self.SetBackgroundColour(wxWHITE)
        self.Bind(EVT_PAINT, self.OnPaint)
        self.fontStart=0
    
    def SetFontStart(self, start):
        self.fontStart = start
        self.Refresh()
        
    def DrawFont(self, id, x, y):
        font = fonts[id]
        hexlist = string.split(font, "\n")
        xx=x
        yy=y
        DC=wxPaintDC(self)
        DC.SetPen(wxBLACK_PEN)
        hexlist.reverse()
        for line in hexlist:
            for char in line:
                v = int(char, 16)
                for dot in binstr[v]:
                    if dot == "1":
                        DC.DrawPoint(xx,yy)
                    xx +=1
            yy -= 1        
            xx = x        
        
    def OnPaint(self, evt):
        dc = wxPaintDC(self)
        dc.Clear()
        w, h = self.GetClientSizeTuple()
        w = (w-5)/20
        h = (h-5)/20
        try:
            for x in xrange(0, w):
                for y in xrange(0, h):
                    fontLoc = self.fontStart + x + y * w
                    if fontLoc<len(fonts):
                        self.DrawFont(fontLoc, x*20+5, y*20+25)
        except:
            pass
            
class main_window(wxFrame):
    def __init__(self, parent, id, title):
        wxFrame.__init__(self, parent, -1, title, size = (400, 400), style=wxDEFAULT_FRAME_STYLE|wxNO_FULL_REPAINT_ON_RESIZE)
        menuBar = wxMenuBar()
        menu=wxMenu()
        menu.Append(1000, "open bdf font")
        menu.Append(1002, "prev page")
        menu.Append(1001,"next page")
        menuBar.Append(menu, "MENU")
        self.SetMenuBar(menuBar)
        self.panel = DrawPanel(self)
        self.Show(true)
        self.Bind(EVT_CLOSE,self.OnCloseWindow)
        self.Bind(EVT_MENU,self.OnOpenFile, id=1000)
        self.Bind(EVT_MENU, self.NextPage, id=1001)
        self.Bind(EVT_MENU, self.PrevPage, id=1002)
        self.fontstart=0
        self.panel.SetFontStart(self.fontstart)

    def PrevPage(self, event):
        if self.fontstart-400>=0:
            self.fontstart -= 400
            self.panel.SetFontStart(self.fontstart)

    def NextPage(self, event):
        if self.fontstart+400<len(fonts):
            self.fontstart += 400
            self.panel.SetFontStart(self.fontstart)
        
    def OnOpenFile(self, event):
        dlg = wxFileDialog(self, message="select a bdf font", defaultDir=os.getcwd(), defaultFile="", wildcard="*.bdf", style=wxSAVE|wxCHANGE_DIR)
        if dlg.ShowModal()==wxID_OK:
            path = dlg.GetPath()
            OpenFont(path)
            self.panel.SetFontStart(0)
        
    def OnCloseWindow(self, event):
        print "close"
        self.Destroy()
        
class App(wxApp):
    def OnInit(self):
        frame = main_window(None, -1, "")
        self.SetTopWindow(frame)
        return true

app = App(0)
app.MainLoop()

}}}
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