/Mac/Demo/imgbrowse/imgbrowse.py

  1"""imgbrowse - Display pictures using img"""
  2
  3import FrameWork
  4import EasyDialogs
  5from Carbon import Res
  6from Carbon import Qd
  7from Carbon import QuickDraw
  8from Carbon import Win
  9#ifrom Carbon mport List
 10import struct
 11import img
 12import imgformat
 13import mac_image
 14
 15
 16# Where is the picture window?
 17LEFT=200
 18TOP=64
 19MINWIDTH=64
 20MINHEIGHT=64
 21MAXWIDTH=320
 22MAXHEIGHT=320
 23
 24
 25def main():
 26    print 'hello world'
 27    imgbrowse()
 28
 29class imgbrowse(FrameWork.Application):
 30    def __init__(self):
 31        # First init menus, etc.
 32        FrameWork.Application.__init__(self)
 33        self.lastwin = None
 34        # Finally, go into the event loop
 35        self.mainloop()
 36
 37    def makeusermenus(self):
 38        self.filemenu = m = FrameWork.Menu(self.menubar, "File")
 39        self.openitem = FrameWork.MenuItem(m, "Open...", "O", self.opendoc)
 40        self.infoitem = FrameWork.MenuItem(m, "Info", "I", self.info)
 41        self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
 42
 43    def quit(self, *args):
 44        self._quit()
 45
 46    def opendoc(self, *args):
 47        pathname = EasyDialogs.AskFileForOpen() # Any file type
 48        if not pathname:
 49            return
 50        bar = EasyDialogs.ProgressBar('Reading and converting...')
 51        try:
 52            rdr = img.reader(imgformat.macrgb16, pathname)
 53        except img.error, arg:
 54            EasyDialogs.Message(repr(arg))
 55            return
 56        w, h = rdr.width, rdr.height
 57        bar.set(10)
 58        data = rdr.read()
 59        del bar
 60        pixmap = mac_image.mkpixmap(w, h, imgformat.macrgb16, data)
 61        self.showimg(w, h, pixmap, data)
 62
 63    def showimg(self, w, h, pixmap, data):
 64        win = imgwindow(self)
 65        win.open(w, h, pixmap, data)
 66        self.lastwin = win
 67
 68    def info(self, *args):
 69        if self.lastwin:
 70            self.lastwin.info()
 71
 72class imgwindow(FrameWork.Window):
 73    def open(self, width, height, pixmap, data):
 74        self.pixmap = pixmap
 75        self.data = data
 76        self.pictrect = (0, 0, width, height)
 77        bounds = (LEFT, TOP, LEFT+width, TOP+height)
 78
 79        self.wid = Win.NewCWindow(bounds, "Picture", 1, 0, -1, 1, 0)
 80        self.do_postopen()
 81
 82    def do_update(self, *args):
 83        pass
 84        currect = self.fitrect()
 85        print 'PICT:', self.pictrect
 86        print 'WIND:', currect
 87        print 'ARGS:', (self.pixmap, self.wid.GetWindowPort().GetPortBitMapForCopyBits(), self.pictrect,
 88                        currect, QuickDraw.srcCopy, None)
 89        self.info()
 90        Qd.CopyBits(self.pixmap, self.wid.GetWindowPort().GetPortBitMapForCopyBits(), self.pictrect,
 91                        currect, QuickDraw.srcCopy, None)
 92
 93    def fitrect(self):
 94        """Return self.pictrect scaled to fit in window"""
 95        graf = self.wid.GetWindowPort()
 96        screenrect = graf.GetPortBounds()
 97        picwidth = self.pictrect[2] - self.pictrect[0]
 98        picheight = self.pictrect[3] - self.pictrect[1]
 99        if picwidth > screenrect[2] - screenrect[0]:
100            factor = float(picwidth) / float(screenrect[2]-screenrect[0])
101            picwidth = picwidth / factor
102            picheight = picheight / factor
103        if picheight > screenrect[3] - screenrect[1]:
104            factor = float(picheight) / float(screenrect[3]-screenrect[1])
105            picwidth = picwidth / factor
106            picheight = picheight / factor
107        return (screenrect[0], screenrect[1], screenrect[0]+int(picwidth),
108                        screenrect[1]+int(picheight))
109
110    def info(self):
111        graf = self.wid.GetWindowPort()
112        bits = graf.GetPortBitMapForCopyBits()
113        mac_image.dumppixmap(bits.pixmap_data)
114
115main()