Sample image drawing code (not fully functional yet)

Mac/Demo/imgbrowse/imgbrowse.py

+"""imgbrowse - Display pictures using img"""
+
+import FrameWork
+import EasyDialogs
+import Res
+import Qd
+import QuickDraw
+import Win
+#import List
+import sys
+import struct
+import img
+import imgformat
+import macfs
+import struct
+
+
+# Where is the picture window?
+LEFT=200
+TOP=64
+MINWIDTH=64
+MINHEIGHT=64
+MAXWIDTH=320
+MAXHEIGHT=320
+
+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
+
+def mk16pixmap(w, h, data):
+	"""kludge a pixmap together"""
+	rv = struct.pack("lhhhhhhhlllhhhhlll",
+		id(data),
+		w*2 + 0x8000,
+		0, 0, h, w,
+		0,
+		0, 0, # XXXX?
+		72<<16, 72<<16,
+		16, 16, # XXXX
+		3, 5,
+		0, 0, 0)
+	print 'Our pixmap, size %d:'%len(rv)
+	dumppixmap(rv)
+	return Qd.RawBitMap(rv)
+
+def main():
+	print 'hello world'
+	imgbrowse()
+
+class imgbrowse(FrameWork.Application):
+	def __init__(self):
+		# First init menus, etc.
+		FrameWork.Application.__init__(self)
+		self.lastwin = None
+		# Finally, go into the event loop
+		self.mainloop()
+		
+	def makeusermenus(self):
+		self.filemenu = m = FrameWork.Menu(self.menubar, "File")
+		self.openitem = FrameWork.MenuItem(m, "Open...", "O", self.opendoc)
+		self.infoitem = FrameWork.MenuItem(m, "Info", "I", self.info)
+		self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
+	
+	def quit(self, *args):
+		raise self
+		
+	def opendoc(self, *args):
+		fss, ok = macfs.StandardGetFile() # Any file type
+		if not ok:
+			return
+		bar = EasyDialogs.ProgressBar('Reading and converting...')
+		pathname = fss.as_pathname()
+		try:
+			rdr = img.reader(imgformat.macrgb16, pathname)
+		except img.error, arg:
+			EasyDialogs.Message(`arg`)
+			return
+		w, h = rdr.width, rdr.height
+		bar.set(10)
+		data = rdr.read()
+		del bar
+		pixmap = mk16pixmap(w, h, data)
+		self.showimg(w, h, pixmap)
+			
+	def showimg(self, w, h, pixmap):
+		win = imgwindow(self)
+		win.open(w, h, pixmap)
+		self.lastwin = win
+
+	def info(self, *args):
+		if self.lastwin:
+			self.lastwin.info()		
+		
+class imgwindow(FrameWork.Window):
+	def open(self, width, height, pixmap):
+		self.pixmap = pixmap
+		self.pictrect = (0, 0, width, height)
+		bounds = (LEFT, TOP, LEFT+width, TOP+height)
+		
+		self.wid = Win.NewCWindow(bounds, "Picture", 1, 0, -1, 1, 0)
+		self.do_postopen()
+		
+	def do_update(self, *args):
+		pass
+		currect = self.fitrect()
+		print 'PICT:', self.pictrect
+		print 'WIND:', currect
+		print 'ARGS:', (self.pixmap, self.wid.GetWindowPort().portBits, self.pictrect,
+				currect, QuickDraw.srcCopy, None)
+		self.info()
+		Qd.CopyBits(self.pixmap, self.wid.GetWindowPort().portBits, self.pictrect,
+				currect, QuickDraw.srcCopy, None)
+##		Qd.DrawPicture(self.picture, currect)
+		
+	def fitrect(self):
+		"""Return self.pictrect scaled to fit in window"""
+		graf = self.wid.GetWindowPort()
+		screenrect = graf.portRect
+		picwidth = self.pictrect[2] - self.pictrect[0]
+		picheight = self.pictrect[3] - self.pictrect[1]
+		if picwidth > screenrect[2] - screenrect[0]:
+			factor = float(picwidth) / float(screenrect[2]-screenrect[0])
+			picwidth = picwidth / factor
+			picheight = picheight / factor
+		if picheight > screenrect[3] - screenrect[1]:
+			factor = float(picheight) / float(screenrect[3]-screenrect[1])
+			picwidth = picwidth / factor
+			picheight = picheight / factor
+		return (screenrect[0], screenrect[1], screenrect[0]+int(picwidth),
+				screenrect[1]+int(picheight))
+				
+	def info(self):
+		graf = self.wid.GetWindowPort()
+		bits = graf.portBits
+		dumppixmap(bits.pixmap_data)
+
+main()