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