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#! /usr/bin/env python
"""Demonstration of using t1lib with Tkinter."""
import ImageTk
import t1lib
import t1Imaging
import Tkinter
class DemoDisplay(Tkinter.Toplevel):
def __init__(self, master):
Tkinter.Toplevel.__init__(self, master)
self.title("Display Window")
self.label = Tkinter.Label(self, text="Display Window",
borderwidth=0)
self.label.pack()
self.protocol("WM_DELETE_WINDOW", master.quit)
def setGlyph(self, glyph):
self.photo = ImageTk.PhotoImage(glyph)
self.glyph = glyph
self.label["image"] = self.photo
def destroy(self):
Tkinter.Toplevel.destroy(self)
self.label = None
self.photo = None
class DemoDialog(Tkinter.Toplevel):
"""A bunch of controls that affect a display window."""
def __init__(self, master, display):
Tkinter.Toplevel.__init__(self, master)
self.title("Display Controls")
self.display = display
self.__setters = {}
self.create_widgets()
self.protocol("WM_DELETE_WINDOW", master.quit)
def create_widgets(self):
self.__labels = []
# create selection box for font:
import _t1lib
map(_t1lib.LoadFont, range(_t1lib.Get_no_fonts()))
names = tuple(map(_t1lib.GetFontName, range(_t1lib.Get_no_fonts())))
namewidth = apply(max, tuple(map(len, names)))
self.font_var = Tkinter.StringVar()
self.font_var.set(names[0])
font_selector = apply(
Tkinter.OptionMenu, (self, self.font_var) + names)
font_selector.configure(width=namewidth, anchor=Tkinter.W,
highlightthickness=0)
self.string_var, entry = self.add_entry("String:", Tkinter.StringVar)
self.add_row("Font:", font_selector)
self.size_var, x = self.add_entry("Size:", Tkinter.DoubleVar, 100.0, 8)
self.spaceoff_var, x = self.add_entry("Space offset:",
Tkinter.DoubleVar, 0.0, 8)
self.angle_var, x = self.add_entry("Rotation:",
Tkinter.DoubleVar, 0.0, 8)
self.kerning_flag = self.add_boolean("Kerning")
self.aa_flag = self.add_boolean("Anti-aliasing")
self.end_rows()
entry.focus_set()
def add_entry(self, text, varclass, value=None, width=None):
var = varclass()
if value is not None:
var.set(value)
entry = Tkinter.Entry(self, textvariable=var, width=width)
entry.bind("<Return>", self.doit)
if width:
expand = None
else:
expand = 1
self.add_row(text, entry, expand)
return var, entry
def add_row(self, text, widget, expand=None):
frame = Tkinter.Frame(self)
label = Tkinter.Label(frame, text=text, anchor=Tkinter.E)
label.pack(side=Tkinter.LEFT)
widget.pack(side=Tkinter.LEFT, in_=frame, fill=Tkinter.X,
anchor=Tkinter.W, expand=expand)
widget.tkraise()
frame.pack(fill=Tkinter.X, padx=4, pady=3)
self.__labels.append(label)
def add_rule(self, size=2):
Tkinter.Frame(self, height=size, borderwidth=1, relief=Tkinter.SUNKEN
).pack(fill=Tkinter.X)
def end_rows(self):
wid = 0
for label in self.__labels:
wid = max(wid, len(label["text"]))
for label in self.__labels:
label["width"] = wid
def add_boolean(self, text):
var = Tkinter.BooleanVar()
widget = Tkinter.Checkbutton(self, text=text, variable=var,
anchor=Tkinter.W, command=self.doit)
self.add_row("", widget, 1)
return var
def doit(self, event=None):
s = self.string_var.get()
if s:
self.display.setGlyph(self.getSetter().setString(s))
def getSetter(self):
key = self.getSetterKey()
try:
return self.__setters[key]
except KeyError:
pass
fontname, size, kerning, spaceoff, angle, aa = key
font = t1lib.getFont(fontname)
if aa:
bpp = 32
else:
bpp = 1
setter = t1Imaging.ImagingSetter(font, size, kerning=kerning, bpp=bpp,
spaceoff=spaceoff, angle=angle)
self.__setters[key] = setter
return setter
def getSetterKey(self):
fontname = self.font_var.get()
size = self.size_var.get()
kerning = self.kerning_flag.get()
spaceoff = self.spaceoff_var.get()
angle = self.angle_var.get()
aa = self.aa_flag.get()
return fontname, size, kerning, spaceoff, angle, aa
def main():
root = Tkinter.Tk()
root.withdraw()
display = DemoDisplay(root)
controller = DemoDialog(root, display)
root.mainloop()
if __name__ == "__main__":
main()
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