Mac/Demo/PICTbrowse/PICTbrowse2.py

   1 """browsepict - Display all "PICT" resources found"""
   2
   3 import FrameWork
   4 import EasyDialogs
   5 from Carbon import Res
   6 from Carbon import Qd
   7 from Carbon import Win
   8 from Carbon import Controls
   9 from Carbon import List
  10 import struct
  11 import macresource
  12
  13 #
  14 # Resource definitions
  15 ID_MAIN=512
  16 MAIN_LIST=1
  17 MAIN_SHOW=2
  18
  19 # Where is the picture window?
  20 LEFT=200
  21 TOP=64
  22 MINWIDTH=64
  23 MINHEIGHT=64
  24 MAXWIDTH=320
  25 MAXHEIGHT=320
  26
  27 def main():
  28     macresource.need('DLOG', ID_MAIN, "PICTbrowse.rsrc")
  29     PICTbrowse()
  30
  31 class PICTbrowse(FrameWork.Application):
  32     def __init__(self):
  33         # First init menus, etc.
  34         FrameWork.Application.__init__(self)
  35         # Next create our dialog
  36         self.main_dialog = MyDialog(self)
  37         # Now open the dialog
  38         contents = self.findPICTresources()
  39         self.main_dialog.open(ID_MAIN, contents)
  40         # Finally, go into the event loop
  41         self.mainloop()
  42
  43     def makeusermenus(self):
  44         self.filemenu = m = FrameWork.Menu(self.menubar, "File")
  45         self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
  46
  47     def quit(self, *args):
  48         self._quit()
  49
  50     def showPICT(self, resid):
  51         w = PICTwindow(self)
  52         w.open(resid)
  53         #EasyDialogs.Message('Show PICT %r' % (resid,))
  54
  55     def findPICTresources(self):
  56         num = Res.CountResources('PICT')
  57         rv = []
  58         for i in range(1, num+1):
  59             Res.SetResLoad(0)
  60             try:
  61                 r = Res.GetIndResource('PICT', i)
  62             finally:
  63                 Res.SetResLoad(1)
  64             id, type, name = r.GetResInfo()
  65             rv.append((id, name))
  66         return rv
  67
  68 class PICTwindow(FrameWork.Window):
  69     def open(self, (resid, resname)):
  70         if not resname:
  71             resname = '#%r' % (resid,)
  72         self.resid = resid
  73         self.picture = Qd.GetPicture(self.resid)
  74         # Get rect for picture
  75         sz, t, l, b, r = struct.unpack('hhhhh', self.picture.data[:10])
  76         self.pictrect = (l, t, r, b)
  77         width = r-l
  78         height = b-t
  79         if width < MINWIDTH: width = MINWIDTH
  80         elif width > MAXWIDTH: width = MAXWIDTH
  81         if height < MINHEIGHT: height = MINHEIGHT
  82         elif height > MAXHEIGHT: height = MAXHEIGHT
  83         bounds = (LEFT, TOP, LEFT+width, TOP+height)
  84
  85         self.wid = Win.NewWindow(bounds, resname, 1, 0, -1, 1, 0)
  86         self.do_postopen()
  87
  88     def do_update(self, *args):
  89         currect = self.fitrect()
  90         Qd.DrawPicture(self.picture, currect)
  91
  92     def fitrect(self):
  93         """Return self.pictrect scaled to fit in window"""
  94         graf = self.dlg.GetWindowPort()
  95         screenrect = graf.GetPortBounds()
  96         picwidth = self.pictrect[2] - self.pictrect[0]
  97         picheight = self.pictrect[3] - self.pictrect[1]
  98         if picwidth > screenrect[2] - screenrect[0]:
  99             factor = float(picwidth) / float(screenrect[2]-screenrect[0])
 100             picwidth = picwidth / factor
 101             picheight = picheight / factor
 102         if picheight > screenrect[3] - screenrect[1]:
 103             factor = float(picheight) / float(screenrect[3]-screenrect[1])
 104             picwidth = picwidth / factor
 105             picheight = picheight / factor
 106         return (screenrect[0], screenrect[1], screenrect[0]+int(picwidth),
 107                         screenrect[1]+int(picheight))
 108
 109 class MyDialog(FrameWork.DialogWindow):
 110     "Main dialog window for PICTbrowse"
 111
 112     def open(self, id, contents):
 113         self.id = id
 114         FrameWork.DialogWindow.open(self, ID_MAIN)
 115         self.dlg.SetDialogDefaultItem(MAIN_SHOW)
 116         self.contents = contents
 117         self.ctl = self.dlg.GetDialogItemAsControl(MAIN_LIST)
 118         h = self.ctl.GetControlData_Handle(Controls.kControlListBoxPart,
 119                         Controls.kControlListBoxListHandleTag)
 120         self.list = List.as_List(h)
 121         self.setlist()
 122
 123     def setlist(self):
 124         self.list.LDelRow(0, 0)
 125         self.list.LSetDrawingMode(0)
 126         if self.contents:
 127             self.list.LAddRow(len(self.contents), 0)
 128             for i in range(len(self.contents)):
 129                 v = repr(self.contents[i][0])
 130                 if self.contents[i][1]:
 131                     v = v + '"' + self.contents[i][1] + '"'
 132                 self.list.LSetCell(v, (0, i))
 133         self.list.LSetDrawingMode(1)
 134         self.list.LUpdate(self.wid.GetWindowPort().visRgn)
 135
 136     def getselection(self):
 137         items = []
 138         point = (0,0)
 139         while 1:
 140             ok, point = self.list.LGetSelect(1, point)
 141             if not ok:
 142                 break
 143             items.append(point[1])
 144             point = point[0], point[1]+1
 145         values = []
 146         for i in items:
 147             values.append(self.contents[i])
 148         return values
 149
 150     def do_show(self, *args):
 151         selection = self.getselection()
 152         for resid in selection:
 153             self.parent.showPICT(resid)
 154
 155     def do_close(self):
 156         self.close()
 157
 158     def do_itemhit(self, item, event):
 159         if item == MAIN_SHOW:
 160             self.do_show()
 161
 162 main()