cpython/Mac/Demo/PICTbrowse/PICTbrowse2.py

"""browsepict - Display all "PICT" resources found"""

import FrameWork
import EasyDialogs
import Res
import Qd
import Win
import Controls
import List
import sys
import struct

#
# Resource definitions
ID_MAIN=512
MAIN_LIST=1
MAIN_SHOW=2

# Where is the picture window?
LEFT=200
TOP=64
MINWIDTH=64
MINHEIGHT=64
MAXWIDTH=320
MAXHEIGHT=320

def main():
	try:
		dummy = Res.GetResource('DLOG', ID_MAIN)
	except Res.Error:
		try:
			Res.OpenResFile("PICTbrowse.rsrc")
		except Res.Error, arg:
			EasyDialogs.Message("Cannot open PICTbrowse.rsrc: "+arg[1])
			sys.exit(1)	
	PICTbrowse()

class PICTbrowse(FrameWork.Application):
	def __init__(self):
		# First init menus, etc.
		FrameWork.Application.__init__(self)
		# Next create our dialog
		self.main_dialog = MyDialog(self)
		# Now open the dialog
		contents = self.findPICTresources()
		self.main_dialog.open(ID_MAIN, contents)
		# Finally, go into the event loop
		self.mainloop()
	
	def makeusermenus(self):
		self.filemenu = m = FrameWork.Menu(self.menubar, "File")
		self.quititem = FrameWork.MenuItem(m, "Quit", "Q", self.quit)
	
	def quit(self, *args):
		self._quit()
		
	def showPICT(self, resid):
		w = PICTwindow(self)
		w.open(resid)
		#EasyDialogs.Message('Show PICT '+`resid`)
		
	def findPICTresources(self):
		num = Res.CountResources('PICT')
		rv = []
		for i in range(1, num+1):
			Res.SetResLoad(0)
			try:
				r = Res.GetIndResource('PICT', i)
			finally:
				Res.SetResLoad(1)
			id, type, name = r.GetResInfo()
			rv.append((id, name))
		return rv
		
class PICTwindow(FrameWork.Window):
	def open(self, (resid, resname)):
		if not resname:
			resname = '#'+`resid`
		self.resid = resid
		self.picture = Qd.GetPicture(self.resid)
		# Get rect for picture
		sz, t, l, b, r = struct.unpack('hhhhh', self.picture.data[:10])
		self.pictrect = (l, t, r, b)
		width = r-l
		height = b-t
		if width < MINWIDTH: width = MINWIDTH
		elif width > MAXWIDTH: width = MAXWIDTH
		if height < MINHEIGHT: height = MINHEIGHT
		elif height > MAXHEIGHT: height = MAXHEIGHT
		bounds = (LEFT, TOP, LEFT+width, TOP+height)
		
		self.wid = Win.NewWindow(bounds, resname, 1, 0, -1, 1, 0)
		self.do_postopen()
		
	def do_update(self, *args):
		currect = self.fitrect()
		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))
		
class MyDialog(FrameWork.DialogWindow):
	"Main dialog window for PICTbrowse"

	def open(self, id, contents):
		self.id = id
		FrameWork.DialogWindow.open(self, ID_MAIN)
		self.wid.SetDialogDefaultItem(MAIN_SHOW)
		self.contents = contents
		self.ctl = self.wid.GetDialogItemAsControl(MAIN_LIST)
		h = self.ctl.GetControlDataHandle(Controls.kControlListBoxPart, 
				Controls.kControlListBoxListHandleTag)
		self.list = List.as_List(h)
		self.setlist()

	def setlist(self):
		self.list.LDelRow(0, 0)
		self.list.LSetDrawingMode(0)
		if self.contents:
			self.list.LAddRow(len(self.contents), 0)
			for i in range(len(self.contents)):
				v = `self.contents[i][0]`
				if self.contents[i][1]:
					v = v + '"' + self.contents[i][1] + '"'
				self.list.LSetCell(v, (0, i))
		self.list.LSetDrawingMode(1)
		self.list.LUpdate(self.wid.GetWindowPort().visRgn)
		
	def getselection(self):
		items = []
		point = (0,0)
		while 1:
			ok, point = self.list.LGetSelect(1, point)
			if not ok:
				break
			items.append(point[1])
			point = point[0], point[1]+1
		values = []
		for i in items:
			values.append(self.contents[i])
		return values
		
	def do_show(self, *args):
		selection = self.getselection()
		for resid in selection:
			self.parent.showPICT(resid)
		
	def do_close(self):
		self.close()
		
	def do_itemhit(self, item, event):
		if item == MAIN_SHOW:
			self.do_show()

main()