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"""
Displays simple text on the screen. The text properties and position
are configurable. The text can also be multi-line if newlines are
embedded in it.
This code is distributed under the conditions of the BSD license. See
LICENSE.txt for details.
Copyright (c) 2003, Prabhu Ramachandran.
"""
__author__ = "Prabhu Ramachandran <prabhu_r@users.sf.net>"
__version__ = "$Revision: 1.2 $"
__date__ = "$Date: 2005/08/02 18:30:13 $"
import Base.Objects, Common
import Tkinter, tkColorChooser
import vtk
import vtkPipeline.vtkMethodParser
import vtkPipeline.ConfigVtkObj
debug = Common.debug
class Text (Base.Objects.Module):
""" Displays simple text on the screen. The text properties and
position are configurable. The text can also be multi-line if
newlines are embedded in it."""
def __init__ (self, mod_m):
debug ("In Text::__init__ ()")
Common.state.busy ()
Base.Objects.Module.__init__ (self, mod_m)
data_src = self.mod_m.get_data_source ()
self.actor = self.act = vtk.vtkTextActor()
self.tprop = self.act.GetTextProperty()
self._initialize()
self.renwin.add_actors (self.act)
# used for the pipeline browser
self.pipe_objs = self.act
self.renwin.Render ()
Common.state.idle ()
def __del__ (self):
debug ("In Text::__del__ ()")
if self.act:
self.renwin.remove_actors (self.act)
self.renwin.Render ()
def _initialize(self):
debug ("In Text::_initialize ()")
self.act.SetInput("Text")
c = self.act.GetPositionCoordinate()
c.SetCoordinateSystemToNormalizedViewport()
c.SetValue(0.5, 0.5)
c = self.act.GetPosition2Coordinate()
c.SetCoordinateSystemToNormalizedViewport()
self.act.ScaledTextOn()
self.act.SetWidth(0.4)
self.act.SetHeight(0.1)
self.tprop.SetColor (*Common.config.fg_color)
self.tprop.SetOpacity(1.0)
def SetInput (self, source):
debug ("In Text::SetInput ()")
pass
def save_config (self, file):
debug ("In Text::save_config ()")
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for obj in (self.act, self.act.GetProperty(), self.tprop):
p.dump (obj, file)
def load_config (self, file):
debug ("In Text::load_config ()")
p = vtkPipeline.vtkMethodParser.VtkPickler ()
for obj in (self.act, self.act.GetProperty(), self.tprop):
p.load (obj, file)
def config_changed (self):
debug ("In Text::config_changed ()")
self.tprop.SetColor (*Common.config.fg_color)
def make_main_gui (self):
"""Create the GUI configuration controls for this object."""
debug ("In Text::make_main_gui ()")
frame = Tkinter.Frame (self.root)
frame.pack(side='top', fill='both', expand=1)
self.pos_var = Tkinter.StringVar()
x, y = self.act.GetPosition()
self.pos_var.set("(%.3f, %.3f)"%(x, y))
self.slider = []
rw = 1
sl = Tkinter.Scale (frame, label='X Position', from_=0,
to=1.0, length="8c", orient='horizontal',
resolution=0.01)
sl.set (x)
sl.grid (row=rw, column=0, columnspan=2)
sl.bind ("<ButtonRelease>", self.change_slider_gui)
self.slider.append (sl)
rw += 1
sl = Tkinter.Scale (frame, label='Y Position', from_=0,
to=1.0, length="8c", orient='horizontal',
resolution=0.01)
sl.set (y)
sl.grid (row=rw, column=0, columnspan=2)
sl.bind ("<ButtonRelease>", self.change_slider_gui)
self.slider.append (sl)
rw += 1
lab = Tkinter.Label (frame, text="Position:")
lab.grid (row=rw, column=0, sticky='ew')
entr = Tkinter.Entry (frame, width=10, relief='sunken',
textvariable=self.pos_var)
entr.grid(row=rw, column=1, sticky='ew')
entr.bind ("<Return>", self.set_position_gui)
frame = Tkinter.Frame (self.root)
frame.pack(side='top', fill='both', expand=1)
CVOF = vtkPipeline.ConfigVtkObj.ConfigVtkObjFrame
gui = CVOF(frame, self.renwin)
t_m = ['ScaledTextOn', 'VisibilityOn']
gs_m = ['Input', 'Width', 'Height']
gui.configure(self.act, get=[], toggle=t_m, get_set=gs_m,
auto_update=1, one_frame=1)
gui.pack(side='top', fill='both', expand=1)
gui = CVOF(frame, self.renwin)
t_m = ['!DebugOn']
gs_m = ['Color', 'FontSize', 'Opacity', 'VerticalJustification']
s_m = [['SetFontFamilyToArial', 'SetFontFamilyToCourier',
'SetFontFamilyToTimes']]
gui.configure(self.tprop, get=[], toggle=t_m, get_set=gs_m,
state=s_m, auto_update=1, one_frame=1)
gui.pack(side='top', fill='both', expand=1)
def change_slider_gui(self, event=None):
debug("Text::change_slider_gui()")
x = self.slider[0].get()
y = self.slider[1].get()
self.pos_var.set("(%.3f, %.3f)"%(x, y))
self.act.SetPosition(x, y)
self.renwin.Render()
def set_position_gui(self, event=None):
debug("Text::set_position_gui()")
x, y = eval (self.pos_var.get())
self.slider[0].set(x)
self.slider[1].set(y)
self.act.SetPosition(x, y)
self.renwin.Render()
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