2 # -*- coding: ISO-8859-1 -*-
5 # Copyright (C) 2002-2004 Jörg Lehmann <joergl@users.sourceforge.net>
6 # Copyright (C) 2003-2004 Michael Schindler <m-schindler@users.sourceforge.net>
7 # Copyright (C) 2002-2004 André Wobst <wobsta@users.sourceforge.net>
9 # This file is part of PyX (http://pyx.sourceforge.net/).
11 # PyX is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 2 of the License, or
14 # (at your option) any later version.
16 # PyX is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
21 # You should have received a copy of the GNU General Public License
22 # along with PyX; if not, write to the Free Software
23 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 from pyx
import box
, canvas
, text
, trafo
, unit
31 defaulttextattrs
= [text
.vshift
.mathaxis
]
33 def __init__(self
, dist
=0.2*unit
.v_cm
, pos
="tr", hpos
=None, vpos
=None,
34 hinside
=1, vinside
=1, hdist
=0.6*unit
.v_cm
, vdist
=0.4*unit
.v_cm
,
35 symbolwidth
=0.5*unit
.v_cm
, symbolheight
=0.25*unit
.v_cm
, symbolspace
=0.2*unit
.v_cm
,
36 textattrs
=[], columns
=1, columndist
=0.5*unit
.v_cm
,
37 border
=0.3*unit
.v_cm
, keyattrs
=None):
39 self
.hinside
= hinside
40 self
.vinside
= vinside
43 self
.symbolwidth
= symbolwidth
44 self
.symbolheight
= symbolheight
45 self
.symbolspace
= symbolspace
46 self
.textattrs
= textattrs
47 self
.columns
= columns
48 self
.columndist
= columndist
50 self
.keyattrs
= keyattrs
52 if vpos
is not None or hpos
is not None:
53 raise ValueError("either specify pos or a combination of hpos, vpos")
54 for poslist
, hpos
, vpos
in [(["tr", "rt"], 1, 1),
55 (["tc", "ct"], 0.5, 1),
57 (["mr", "rm"], 1, 0.5),
58 (["mc", "cm"], 0.5, 0.5),
59 (["ml", "lm"], 0, 0.5),
61 (["bc", "cb"], 0.5, 0),
62 (["bl", "lb"], 0, 0)]:
68 raise ValueError("invalid pos")
70 if vpos
is None or hpos
is None:
71 raise ValueError("either specify pos or a combination of hpos, vpos")
75 def paintcolumn(self
, plotitems
):
76 "creates the layout of a key column"
78 self
.dist_pt
= unit
.topt(self
.dist
)
79 self
.hdist_pt
= unit
.topt(self
.hdist
)
80 self
.vdist_pt
= unit
.topt(self
.vdist
)
81 self
.symbolwidth_pt
= unit
.topt(self
.symbolwidth
)
82 self
.symbolheight_pt
= unit
.topt(self
.symbolheight
)
83 self
.symbolspace_pt
= unit
.topt(self
.symbolspace
)
85 for plotitem
in plotitems
:
86 titlebox
= c
.texrunner
.text_pt(0, 0, plotitem
.title
, self
.defaulttextattrs
+ self
.textattrs
)
87 titlebox
.plotitem
= plotitem
88 titleboxes
.append(titlebox
)
89 dy_pt
= box
.tile_pt(titleboxes
, self
.dist_pt
, 0, -1)
90 box
.linealignequal_pt(titleboxes
, self
.symbolwidth_pt
+ self
.symbolspace_pt
, 1, 0)
91 y_pt
= -0.5 * self
.symbolheight_pt
+ titleboxes
[0].center
[1]
92 for titlebox
in titleboxes
:
93 titlebox
.plotitem
.key_pt(c
, 0, y_pt
, self
.symbolwidth_pt
, self
.symbolheight_pt
)
95 for titlebox
in titleboxes
:
99 def paint(self
, plotitems
):
100 "creates the layout of the key"
101 columndist_pt
= unit
.topt(self
.columndist
)
103 plotitems
= [plotitem
for plotitem
in plotitems
if plotitem
.title
is not None]
104 itemspercolumn
= (len(plotitems
) + self
.columns
- 1) / self
.columns
# integer division
107 subc
= self
.paintcolumn(plotitems
[:itemspercolumn
])
108 c
.insert(subc
, [trafo
.translate_pt(x_pt
, 0)])
109 x_pt
+= unit
.topt(subc
.bbox().width()) + columndist_pt
110 del plotitems
[:itemspercolumn
]
111 if self
.keyattrs
is not None:
112 newc
= canvas
.canvas()
113 newc
.draw(c
.bbox().enlarged(self
.border
).path(), self
.keyattrs
)