cpython/Mac/Demo/imgbrowse/mac_image.py

56 lines
1.8 KiB
Python

"""mac_image - Helper routines (hacks) for images"""
import imgformat
from Carbon import Qd
import struct
import MacOS
_fmt_to_mac = {
imgformat.macrgb16 : (16, 16, 3, 5),
}
def mkpixmap(w, h, fmt, data):
"""kludge a pixmap together"""
fmtinfo = _fmt_to_mac[fmt]
rv = struct.pack("lHhhhhhhlllhhhhlll",
id(data)+MacOS.string_id_to_buffer, # HACK HACK!!
w*2 + 0x8000,
0, 0, h, w,
0,
0, 0, # XXXX?
72<<16, 72<<16,
fmtinfo[0], fmtinfo[1],
fmtinfo[2], fmtinfo[3],
0, 0, 0)
## print 'Our pixmap, size %d:'%len(rv)
## dumppixmap(rv)
return Qd.RawBitMap(rv)
def dumppixmap(data):
baseAddr, \
rowBytes, \
t, l, b, r, \
pmVersion, \
packType, packSize, \
hRes, vRes, \
pixelType, pixelSize, \
cmpCount, cmpSize, \
planeBytes, pmTable, pmReserved \
= struct.unpack("lhhhhhhhlllhhhhlll", data)
print('Base: 0x%x'%baseAddr)
print('rowBytes: %d (0x%x)'%(rowBytes&0x3fff, rowBytes))
print('rect: %d, %d, %d, %d'%(t, l, b, r))
print('pmVersion: 0x%x'%pmVersion)
print('packing: %d %d'%(packType, packSize))
print('resolution: %f x %f'%(float(hRes)/0x10000, float(vRes)/0x10000))
print('pixeltype: %d, size %d'%(pixelType, pixelSize))
print('components: %d, size %d'%(cmpCount, cmpSize))
print('planeBytes: %d (0x%x)'%(planeBytes, planeBytes))
print('pmTable: 0x%x'%pmTable)
print('pmReserved: 0x%x'%pmReserved)
for i in range(0, len(data), 16):
for j in range(16):
if i + j < len(data):
print('%02.2x'%ord(data[i+j]), end=' ')
print()