Mac/Demo/imgbrowse/mac_image.py

   1 """mac_image - Helper routines (hacks) for images"""
   2 import imgformat
   3 from Carbon import Qd
   4 import struct
   5 import MacOS
   6
   7 _fmt_to_mac = {
   8         imgformat.macrgb16 : (16, 16, 3, 5),
   9 }
  10
  11 def mkpixmap(w, h, fmt, data):
  12     """kludge a pixmap together"""
  13     fmtinfo = _fmt_to_mac[fmt]
  14
  15     rv = struct.pack("lHhhhhhhlllhhhhlll",
  16             id(data)+MacOS.string_id_to_buffer, # HACK HACK!!
  17             w*2 + 0x8000,
  18             0, 0, h, w,
  19             0,
  20             0, 0, # XXXX?
  21             72<<16, 72<<16,
  22             fmtinfo[0], fmtinfo[1],
  23             fmtinfo[2], fmtinfo[3],
  24             0, 0, 0)
  25 ##      print 'Our pixmap, size %d:'%len(rv)
  26 ##      dumppixmap(rv)
  27     return Qd.RawBitMap(rv)
  28
  29 def dumppixmap(data):
  30     baseAddr, \
  31             rowBytes, \
  32             t, l, b, r, \
  33             pmVersion, \
  34             packType, packSize, \
  35             hRes, vRes, \
  36             pixelType, pixelSize, \
  37             cmpCount, cmpSize, \
  38             planeBytes, pmTable, pmReserved \
  39                     = struct.unpack("lhhhhhhhlllhhhhlll", data)
  40     print 'Base:       0x%x'%baseAddr
  41     print 'rowBytes:   %d (0x%x)'%(rowBytes&0x3fff, rowBytes)
  42     print 'rect:       %d, %d, %d, %d'%(t, l, b, r)
  43     print 'pmVersion:  0x%x'%pmVersion
  44     print 'packing:    %d %d'%(packType, packSize)
  45     print 'resolution: %f x %f'%(float(hRes)/0x10000, float(vRes)/0x10000)
  46     print 'pixeltype:  %d, size %d'%(pixelType, pixelSize)
  47     print 'components: %d, size %d'%(cmpCount, cmpSize)
  48     print 'planeBytes: %d (0x%x)'%(planeBytes, planeBytes)
  49     print 'pmTable:    0x%x'%pmTable
  50     print 'pmReserved: 0x%x'%pmReserved
  51     for i in range(0, len(data), 16):
  52         for j in range(16):
  53             if i + j < len(data):
  54                 print '%02.2x'%ord(data[i+j]),
  55         print