1 files changed, 234 insertions, 0 deletions
diff --git a/bin/pychart/theme.py b/bin/pychart/theme.py
new file mode 100644
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+++ b/bin/pychart/theme.py
@@ -0,0 +1,234 @@
+#
+# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
+# 
+# Jockey is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# Jockey is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+import sys
+import os
+import re
+import getopt
+import pychart_util
+
+__doc__ = """This module is defines variables for changing the looks
+of charts. All the variables can be changed either via environment
+variable PYCHART_OPTIONS or via the command-line options.
+
+The value of PYCHART_OPTIONS should be a sequence of var=val separated
+by space.  Below is an example, which tells Pychart to write to file
+foo.pdf and use Times-Roman as the default font.
+
+PYCHART_OPTIONS="output=foo.pdf font-family=Times"
+
+The summary of attributes that can be set via PYCHART_OPTIONS follows:
+
+output=FILENAME (default: stdout)
+
+    Set the output file name.
+    
+format=[ps|pdf|pdf-uncompressed|png|x11|svg] (default: ps)
+
+    Set the output file format.
+    
+font-family=NAME (default: Helvetica)
+
+    Set the default font to be used by texts.
+    
+font-size=N (default: 9)
+
+    Set the default font to be used by texts.
+line-width=X (default: 0.4)
+
+    Set the default line width, in points.  See also
+    pychart.line_style.
+
+scale=X (default: 1.0)
+
+    Set the scaling factor.  The default is 1.0. 
+
+color=[yes|no] (default: no)
+
+    If yes, Pychart colorizes default object attributes.
+
+You can also set these variables by calling theme.get_options.
+"""
+
+use_color = 0
+scale_factor = 1
+output_format = None   # "ps", "pdf", "png", "x11", or "svg"
+compress_output = 1
+output_file = ""
+
+default_font_family = "Helvetica"
+default_font_size = 9
+default_line_height = None
+default_font_halign = "L"
+default_font_valign = "B"
+default_font_angle = 0
+default_line_width = 0.4
+
+debug_level = 1
+delta_bounding_box = [-3, -3, 3, 3]
+bounding_box = {}
+         
+def parse_yesno(str):
+    if str in ("yes", "true", "1"):
+        return 1
+    else:
+        return 0
+
+def parse_bounding_box(arg):
+    global delta_bounding_box, bounding_box
+    
+    l = arg.split(",")
+    if len(l) != 4:
+        raise ValueError, "Need to specify margin=LEFT,BOTTOM,RIGHT,TOP"
+    for i in range(0, 4):
+        val = l[i].strip()
+        if val[0] == '+':
+            delta_bounding_box[i] = int(val[1:])
+        elif val[0] == '-':
+            delta_bounding_box[i] = int(val[1:])
+        else:
+            bounding_box[i] = int(val)
+
+def adjust_bounding_box(bbox):
+    """Adjust the bounding box as specified by user.
+    Returns the adjusted bounding box.
+
+    - bbox: Bounding box computed from the canvas drawings.
+    It must be a four-tuple of numbers.
+    """
+    for i in range(0, 4):
+        if bounding_box.has_key(i):
+            bbox[i] = bounding_box[i]
+        else:
+            bbox[i] += delta_bounding_box[i]
+    return bbox
+
+def parse_option(opt, arg):
+    global use_color, scale_factor, margin
+    global output_format, output_file, compress_output
+    global default_font_family, default_font_size
+    global default_line_height
+    global default_line_width, debug_level
+    if opt == "format":
+        if arg in ("ps", "eps"):
+            output_format = "ps"
+        elif arg == "png":
+            output_format = "png"
+        elif arg == "svg":
+            output_format = "svg"
+        elif arg == "x11":
+            output_format = "x11"
+        elif arg == "pdf-uncompressed":
+            output_format = "pdf"
+            compress_output = 0
+        elif arg in ("pdf-compressed", "pdf"):
+            output_format = "pdf"
+            compress_output = 1
+        else:
+            raise ValueError, "Unknown output option: " + str(arg)
+    elif opt == "output":
+        output_file = arg
+    elif opt == "color":
+        use_color = 1
+    elif opt == "scale":
+        scale_factor = float(arg)
+    elif opt == "bbox":
+        parse_bounding_box(arg)
+    elif opt == "font-family":
+        default_font_family = arg
+    elif opt == "font-size":
+        default_font_size = float(arg)
+        default_line_height = float(arg)            
+    elif opt == "line-width":
+        default_line_width = float(arg)
+    elif opt == "debug-level":
+        debug_level = int(arg)
+    else:
+        raise getopt.GetoptError, "Unknown option: " + opt + " " + arg
+    
+if os.environ.has_key("PYCHART_OPTIONS"):
+    for opt in os.environ["PYCHART_OPTIONS"].split():
+        opt, arg = opt.split("=")
+        parse_option(opt, arg)
+
+hooks = []        
+def add_reinitialization_hook(proc):
+    global hooks
+    hooks.append(proc)
+    proc()
+    
+def usage():
+    print "Usage: %s [options..]" % sys.argv[0]
+    print """
+    --scale=X: Set the scaling factor to X (default: 1.0).
+    --format=[ps|png|pdf|x11|svg]: Set the output format (default: ps).
+    --font-family=NAME: Set the default font family (default: Helvetica).
+    --font-size=NAME: Set the default font size (default: 9pts).
+    --line-width=NAME: Set the default line width (default: 0.4).
+    --debug-level=N: Set the messaging verbosity (default: 0).
+    --bbox=LEFT,BOTTOM,RIGHT,TOP: Specifies the amount of space (in PS points) to be left in the edges of the picture (default: -1,-1,+1,+1).
+    """
+
+def reinitialize():
+    """This procedure must be called after setting variables in
+    the |theme| module. This procedure propagates the new values of
+    the theme variables to other modules that depend on their values."""
+    for proc in hooks:
+        proc()
+    
+def get_options(argv = None):
+    """This procedure takes a list of command line arguments in <argv>
+    and parses
+    options. It returns the non-parsed portion of <argv>. Parameter
+    <argv> can be
+    omitted, in which case its value defaults to |sys.argv[1:]|.
+    The options supported are: "|--format=[ps,png,pdf,x11,svg]|",
+    "|--output=|<file>", "|--color=[yes,no]|"
+    "|--scale=|<X>", "|--font-family=|<name>", "|--font-size=|<X>",
+    "|--line-width=|<X>",
+    "|--debug-level=|<N>", "|bbox=|<left,bottom,right,top>".
+    The below code shows an example.
+
+#!/usr/bin/python
+from pychart import *
+args = theme.get_options()
+ar = area.T(...)
+...
+    """
+    if argv == None:
+        argv = sys.argv[1:]
+    try:
+        opts, args = getopt.getopt(argv, "d:co:f:",
+                                   ["format=", "output=", "color=",
+                                    "scale=", "font-family=", "font-size=",
+                                    "line-width=", "debug-level=",
+                                    "bbox="])
+    except getopt.GetoptError, foo:
+        print foo
+        usage()
+        raise getopt.GetoptError
+    for opt, arg in opts:
+        if opt == "-d":
+            parse_option("debug-level", arg)
+        elif opt == "-c":
+            parse_option("color", None)
+        elif opt == "-o":
+            parse_option("output", arg)
+        elif opt == "-f":
+            parse_option("format", arg)
+        else:
+            parse_option(opt[2:], arg)
+    reinitialize()
+    return args
+
+