from __future__ import division
"""
backend_wx.py
A wxPython backend for matplotlib, based (very heavily) on
backend_template.py and backend_gtk.py
Author: Jeremy O'Donoghue (jeremy@o-donoghue.com)
Derived from original copyright work by John Hunter
(jdhunter@ace.bsd.uchicago.edu)
Copyright (C) Jeremy O'Donoghue & John Hunter, 2003-4
License: This work is licensed under a PSF compatible license. A copy
should be included with this source code.
"""
"""
KNOWN BUGS -
- Mousewheel (on Windows) only works after menu button has been pressed
at least once
- Mousewheel on Linux (wxGTK linked against GTK 1.2) does not work at all
- Vertical text renders horizontally if you use a non TrueType font
on Windows. This is a known wxPython issue. Work-around is to ensure
that you use a TrueType font.
- Pcolor demo puts chart slightly outside bounding box (approx 1-2 pixels
to the bottom left)
- Outputting to bitmap more than 300dpi results in some text being incorrectly
scaled. Seems to be a wxPython bug on Windows or font point sizes > 60, as
font size is correctly calculated.
- Performance poorer than for previous direct rendering version
- TIFF output not supported on wxGTK. This is a wxGTK issue
- Text is not anti-aliased on wxGTK. This is probably a platform
configuration issue.
- If a second call is made to show(), no figure is generated (#866965)
Not implemented:
- Printing
Fixed this release:
- Bug #866967: Interactive operation issues fixed [JDH]
- Bug #866969: Dynamic update does not function with backend_wx [JOD]
Examples which work on this release:
---------------------------------------------------------------
| Windows 2000 | Linux |
| wxPython 2.3.3 | wxPython 2.4.2.4 |
--------------------------------------------------------------|
- alignment_test.py | TBE | OK |
- arctest.py | TBE | (3) |
- axes_demo.py | OK | OK |
- axes_props.py | OK | OK |
- bar_stacked.py | TBE | OK |
- barchart_demo.py | OK | OK |
- color_demo.py | OK | OK |
- csd_demo.py | OK | OK |
- dynamic_demo.py | N/A | N/A |
- dynamic_demo_wx.py | TBE | OK |
- embedding_in_gtk.py | N/A | N/A |
- embedding_in_wx.py | OK | OK |
- errorbar_demo.py | OK | OK |
- figtext.py | OK | OK |
- histogram_demo.py | OK | OK |
- interactive.py | N/A (2) | N/A (2) |
- interactive2.py | N/A (2) | N/A (2) |
- legend_demo.py | OK | OK |
- legend_demo2.py | OK | OK |
- line_styles.py | OK | OK |
- log_demo.py | OK | OK |
- logo.py | OK | OK |
- mpl_with_glade.py | N/A (2) | N/A (2) |
- mri_demo.py | OK | OK |
- mri_demo_with_eeg.py | OK | OK |
- multiple_figs_demo.py | OK | OK |
- pcolor_demo.py | OK | OK |
- psd_demo.py | OK | OK |
- scatter_demo.py | OK | OK |
- scatter_demo2.py | OK | OK |
- simple_plot.py | OK | OK |
- stock_demo.py | OK | OK |
- subplot_demo.py | OK | OK |
- system_monitor.py | N/A (2) | N/A (2) |
- text_handles.py | OK | OK |
- text_themes.py | OK | OK |
- vline_demo.py | OK | OK |
---------------------------------------------------------------
(2) - Script uses GTK-specific features - cannot not run,
but wxPython equivalent should be written.
(3) - Clipping seems to be broken.
"""
cvs_id = '$Id: backend_wx.py 3011 2007-02-12 23:10:43Z jdh2358 $'
import sys, os, os.path, math, StringIO
_DEBUG = 5
if _DEBUG < 5:
import traceback, pdb
_DEBUG_lvls = {1 : 'Low ', 2 : 'Med ', 3 : 'High', 4 : 'Error' }
try:
import wx
backend_version = wx.VERSION_STRING
except:
print >>sys.stderr, "Matplotlib backend_wx requires wxPython be installed"
sys.exit()
wxapp = None
def DEBUG_MSG(string, lvl=3, o=None):
if lvl >= _DEBUG:
cls = o.__class__
print "%s- %s in %s" % (_DEBUG_lvls[lvl], string, cls)
def debug_on_error(type, value, tb):
"""Code due to Thomas Heller - published in Python Cookbook (O'Reilley)"""
traceback.print_exc(type, value, tb)
print
pdb.pm()
00137 class fake_stderr:
"""Wx does strange things with stderr, as it makes the assumption that there
is probably no console. This redirects stderr to the console, since we know
that there is one!"""
def write(self, msg):
print "Stderr: %s\n\r" % msg
import matplotlib
from matplotlib import verbose
from matplotlib.backend_bases import RendererBase, GraphicsContextBase,\
FigureCanvasBase, FigureManagerBase, NavigationToolbar2, \
cursors
from matplotlib._pylab_helpers import Gcf
from matplotlib.artist import Artist
from matplotlib.cbook import exception_to_str
from matplotlib.figure import Figure
from matplotlib.text import _process_text_args, Text
from matplotlib.widgets import SubplotTool
from matplotlib import rcParams
PIXELS_PER_INCH = 75
def error_msg_wx(msg, parent=None):
"""
Signal an error condition -- in a GUI, popup a error dialog
"""
dialog =wx.MessageDialog(parent = parent,
message = msg,
caption = 'Matplotlib backend_wx error',
style=wx.OK | wx.CENTRE)
dialog.ShowModal()
dialog.Destroy()
return None
def raise_msg_to_str(msg):
"""msg is a return arg from a raise. Join with new lines"""
if not is_string_like(msg):
msg = '\n'.join(map(str, msg))
return msg
00189 class RendererWx(RendererBase):
"""
The renderer handles all the drawing primitives using a graphics
context instance that controls the colors/styles. It acts as the
'renderer' instance used by many classes in the hierarchy.
"""
fontweights = {
100 : wx.LIGHT,
200 : wx.LIGHT,
300 : wx.LIGHT,
400 : wx.NORMAL,
500 : wx.NORMAL,
600 : wx.NORMAL,
700 : wx.BOLD,
800 : wx.BOLD,
900 : wx.BOLD,
'ultralight' : wx.LIGHT,
'light' : wx.LIGHT,
'normal' : wx.NORMAL,
'medium' : wx.NORMAL,
'semibold' : wx.NORMAL,
'bold' : wx.BOLD,
'heavy' : wx.BOLD,
'ultrabold' : wx.BOLD,
'black' : wx.BOLD
}
fontangles = {
'italic' : wx.ITALIC,
'normal' : wx.NORMAL,
'oblique' : wx.SLANT }
fontnames = { 'Sans' : wx.SWISS,
'Roman' : wx.ROMAN,
'Script' : wx.SCRIPT,
'Decorative' : wx.DECORATIVE,
'Modern' : wx.MODERN,
'Courier' : wx.MODERN,
'courier' : wx.MODERN }
00240 def __init__(self, bitmap, dpi):
"""
Initialise a wxWindows renderer instance.
"""
DEBUG_MSG("__init__()", 1, self)
self.width = bitmap.GetWidth()
self.height = bitmap.GetHeight()
self.bitmap = bitmap
self.fontd = {}
self.dpi = dpi
self.gc = None
00252 def flipy(self):
return True
def offset_text_height(self):
return True
00258 def get_text_width_height(self, s, prop, ismath):
"""
get the width and height in display coords of the string s
with FontPropertry prop
"""
if ismath: s = self.strip_math(s)
if self.gc is None: gc = self.new_gc()
font = self.get_wx_font(s, prop)
self.gc.SetFont(font)
w, h = self.gc.GetTextExtent(s)
return w, h
def get_canvas_width_height(self):
'return the canvas width and height in display coords'
return self.width, self.height
00278 def draw_arc(self, gc, rgbFace, x, y, width, height, angle1, angle2, rotation):
"""
Draw an arc centered at x,y with width and height and angles
from 0.0 to 360.0.
If rgbFace is present, fill the figure in this colour, otherwise
it is not filled.
"""
gc.select()
assert gc.Ok(), "wxMemoryDC not OK to use"
ulX = x - int(width/2)
ulY = self.height - int(y + (height/2))
if rgbFace is not None:
r,g,b = self._to_wx_rgb(rgbFace)
new_brush =wx.Brush(wx.Colour(r,g,b), wx.SOLID)
gc.SetBrush(new_brush)
else:
gc.SetBrush(wx.TRANSPARENT_BRUSH)
gc.DrawEllipticArc(int(ulX), int(ulY), int(width)+1, int(height)+1,
int(angle1), int(angle2))
gc.unselect()
00302 def draw_line(self, gc, x1, y1, x2, y2):
"""
Draw a single line from x1,y1 to x2,y2
"""
DEBUG_MSG("draw_line()", 1, self)
gc.select()
gc.DrawLine(int(x1), self.height - int(y1),
int(x2), self.height - int(y2))
gc.unselect()
00312 def draw_lines(self, gc, x, y):
"""
x and y are equal length arrays, draw lines connecting each
point in x, y
"""
gc.select()
assert gc.Ok(), "wxMemoryDC not OK to use"
assert len(x) == len(y), "draw_lines() x and y must be of equal length"
gc.DrawLines([wx.Point(int(x[i]), self.height - int(y[i])) for i in range(len(x))])
gc.unselect()
00323 def draw_polygon(self, gc, rgbFace, points):
"""
Draw a polygon. points is a len vertices tuple, each element
giving the x,y coords a vertex
"""
gc.select()
assert gc.Ok(), "wxMemoryDC not OK to use"
points = [(int(x), self.height - int(y)) for x,y in points]
if rgbFace is not None:
r,g,b = self._to_wx_rgb(rgbFace)
new_brush =wx.Brush(wx.Colour(r,g,b), wx.SOLID)
gc.SetBrush(new_brush)
else:
gc.SetBrush(wx.TRANSPARENT_BRUSH)
gc.DrawPolygon(points)
gc.unselect()
00340 def draw_rectangle(self, gc, rgbFace, x, y, width, height):
"""
Draw a rectangle at lower left x,y with width and height
If filled=True, fill the rectangle with the gc foreground
gc is a GraphicsContext instance
"""
gc.select()
assert gc.Ok(), "wxMemoryDC not OK to use"
if rgbFace is not None:
r,g,b = self._to_wx_rgb(rgbFace)
new_brush =wx.Brush(wx.Colour(r,g,b), wx.SOLID)
gc.SetBrush(new_brush)
else:
gc.SetBrush(wx.TRANSPARENT_BRUSH)
gc.DrawRectangle(int(x), self.height - int(height + y),
int(math.ceil(width)), int(math.ceil(height)))
gc.unselect()
00359 def draw_point(self, gc, x, y):
"""
Draw a single point at x,y
"""
gc.select()
assert gc.Ok(), "wxMemoryDC not OK to use"
gc.DrawPoint(int(x), self.height - int(y))
gc.unselect()
00368 def draw_text(self, gc, x, y, s, prop, angle, ismath):
"""
Render the matplotlib.text.Text instance
None)
"""
if ismath: s = self.strip_math(s)
DEBUG_MSG("draw_text()", 1, self)
gc.select()
font = self.get_wx_font(s, prop)
gc.SetFont(font)
assert gc.Ok(), "wxMemoryDC not OK to use"
w, h = self.get_text_width_height(s, prop, ismath)
x = int(x)
y = int(y-h)
if angle!=0:
try: gc.DrawRotatedText(s, x, y, angle)
except:
verbose.print_error(exception_to_str('WX rotated text failed'))
else:
gc.DrawText(s, x, y)
gc.unselect()
00393 def new_gc(self):
"""
Return an instance of a GraphicsContextWx, and sets the current gc copy
"""
DEBUG_MSG('new_gc()', 2, self)
self.gc = GraphicsContextWx(self.bitmap, self)
self.gc.select()
assert self.gc.Ok(), "wxMemoryDC not OK to use"
self.gc.unselect()
return self.gc
00404 def get_gc(self):
"""
Fetch the locally cached gc.
"""
assert self.gc != None, "gc must be defined"
return self.gc
00414 def get_wx_font(self, s, prop):
"""
Return a wx font. Cache instances in a font dictionary for
efficiency
"""
DEBUG_MSG("get_wx_font()", 1, self)
key = hash(prop)
fontprop = prop
fontname = fontprop.get_name()
font = self.fontd.get(key)
if font is not None:
return font
wxFontname = self.fontnames.get(fontname, wx.ROMAN)
wxFacename = ''
size = self.points_to_pixels(fontprop.get_size_in_points())
font =wx.Font(int(size+0.5),
wxFontname,
self.fontangles[fontprop.get_style()],
self.fontweights[fontprop.get_weight()],
False,
wxFacename)
self.fontd[key] = font
return font
00451 def _to_wx_rgb(self, rgb):
"""Takes a colour value and returns a tuple (r,g,b) suitable
for instantiating a wx.Colour."""
r, g, b = rgb
return (int(r * 255), int(g * 255), int(b * 255))
00459 def points_to_pixels(self, points):
"""
convert point measures to pixes using dpi and the pixels per
inch of the display
"""
return points*(PIXELS_PER_INCH/72.0*self.dpi.get()/72.0)
00466 class GraphicsContextWx(GraphicsContextBase, wx.MemoryDC):
"""
The graphics context provides the color, line styles, etc...
In wxPython this is done by wrapping a wxDC object and forwarding the
appropriate calls to it. Notice also that colour and line styles are
mapped on the wx.Pen() member of the wxDC. This means that we have some
rudimentary pen management here.
The base GraphicsContext stores colors as a RGB tuple on the unit
interval, eg, (0.5, 0.0, 1.0). wxPython uses an int interval, but
since wxPython colour management is rather simple, I have not chosen
to implement a separate colour manager class.
"""
_capd = { 'butt': wx.CAP_BUTT,
'projecting': wx.CAP_PROJECTING,
'round': wx.CAP_ROUND }
_joind = { 'bevel': wx.JOIN_BEVEL,
'miter': wx.JOIN_MITER,
'round': wx.JOIN_ROUND }
_dashd_wx = { 'solid': wx.SOLID,
'dashed': wx.SHORT_DASH,
'dashdot': wx.DOT_DASH,
'dotted': wx.DOT }
_lastWxDC = None
def __init__(self, bitmap, renderer):
GraphicsContextBase.__init__(self)
wx.MemoryDC.__init__(self)
DEBUG_MSG("__init__()", 1, self)
if GraphicsContextWx._lastWxDC != None:
GraphicsContextWx._lastWxDC.SelectObject(wx.NullBitmap)
self.SelectObject(bitmap)
self.bitmap = bitmap
self.SetPen(wx.Pen('BLACK', 1, wx.SOLID))
self._style=wx.SOLID
self.renderer = renderer
GraphicsContextWx._lastWxDC = self
00512 def select(self):
"""
Select the current bitmap into this wxDC instance
"""
if sys.platform=='win32':
self.SelectObject(self.bitmap)
self.IsSelected = True
00521 def unselect(self):
"""
Select a Null bitmasp into this wxDC instance
"""
if sys.platform=='win32':
self.SelectObject(wx.NullBitmap)
self.IsSelected = False
00529 def set_clip_rectangle(self, rect):
"""
Destroys previous clipping region and defines a new one.
"""
DEBUG_MSG("set_clip_rectangle()", 1, self)
self.select()
l,b,w,h = rect
if hasattr(self, 'SetClippingRegionXY'):
clipfunc = getattr(self, 'SetClippingRegionXY')
else:
clipfunc = getattr(self, 'SetClippingRegion')
clipfunc(int(l), self.renderer.height - int(b+h),
int(w), int(h))
self.unselect()
00546 def set_foreground(self, fg, isRGB=None):
"""
Set the foreground color. fg can be a matlab format string, a
html hex color string, an rgb unit tuple, or a float between 0
and 1. In the latter case, grayscale is used.
"""
DEBUG_MSG("set_foreground()", 1, self)
self.select()
GraphicsContextBase.set_foreground(self, fg, isRGB)
pen = self.GetPen()
pen.SetColour(self.get_wxcolour())
self.SetPen(pen)
brush =wx.Brush(self.get_wxcolour(), wx.SOLID)
self.SetBrush(brush)
self.SetTextForeground(self.get_wxcolour())
self.unselect()
00569 def set_graylevel(self, frac):
"""
Set the foreground color. fg can be a matlab format string, a
html hex color string, an rgb unit tuple, or a float between 0
and 1. In the latter case, grayscale is used.
"""
DEBUG_MSG("set_graylevel()", 1, self)
self.select()
GraphicsContextBase.set_graylevel(self, frac)
pen = self.GetPen()
pen.SetColour(self.get_wxcolour())
self.SetPen(pen)
brush =wx.Brush(self.get_wxcolour(), wx.SOLID)
self.SetBrush(brush)
self.unselect()
00585 def set_linewidth(self, w):
"""
Set the line width.
"""
DEBUG_MSG("set_linewidth()", 1, self)
self.select()
if w>0 and w<1: w = 1
GraphicsContextBase.set_linewidth(self, w)
pen = self.GetPen()
lw = int(self.renderer.points_to_pixels(self._linewidth))
if lw==0: lw = 1
pen.SetWidth(lw)
self.SetPen(pen)
self.unselect()
00600 def set_capstyle(self, cs):
"""
Set the capstyle as a string in ('butt', 'round', 'projecting')
"""
DEBUG_MSG("set_capstyle()", 1, self)
self.select()
GraphicsContextBase.set_capstyle(self, cs)
pen = self.GetPen()
pen.SetCap(GraphicsContextWx._capd[self._capstyle])
self.SetPen(pen)
self.unselect()
00612 def set_joinstyle(self, js):
"""
Set the join style to be one of ('miter', 'round', 'bevel')
"""
DEBUG_MSG("set_joinstyle()", 1, self)
self.select()
GraphicsContextBase.set_joinstyle(self, js)
pen = self.GetPen()
pen.SetJoin(GraphicsContextWx._joind[self._joinstyle])
self.SetPen(pen)
self.unselect()
00624 def set_linestyle(self, ls):
"""
Set the line style to be one of
"""
DEBUG_MSG("set_linestyle()", 1, self)
self.select()
GraphicsContextBase.set_linestyle(self, ls)
try:
self._style = GraphicsContextWx._dashd_wx[ls]
except KeyError:
self._style=wx.LONG_DASH
if wx.Platform == '__WXMSW__':
self.set_linewidth(1)
pen = self.GetPen()
pen.SetStyle(self._style)
self.SetPen(pen)
self.unselect()
00645 def get_wxcolour(self):
"""return a wx.Colour from RGB format"""
DEBUG_MSG("get_wx_color()", 1, self)
r, g, b = self.get_rgb()
r *= 255
g *= 255
b *= 255
return wx.Colour(red=int(r), green=int(g), blue=int(b))
_FILETYPES = {'.bmp': wx.BITMAP_TYPE_BMP,
'.jpg': wx.BITMAP_TYPE_JPEG,
'.png': wx.BITMAP_TYPE_PNG,
'.pcx': wx.BITMAP_TYPE_PCX,
'.tif': wx.BITMAP_TYPE_TIF,
'.xpm': wx.BITMAP_TYPE_XPM}
00663 class FigureCanvasWx(FigureCanvasBase, wx.Panel):
"""
The FigureCanvas contains the figure and does event handling.
In the wxPython backend, it is derived from wxPanel, and (usually) lives
inside a frame instantiated by a FigureManagerWx. The parent window probably
implements a wx.Sizer to control the displayed control size - but we give a
hint as to our preferred minimum size.
"""
keyvald = {
wx.WXK_CONTROL : 'control',
wx.WXK_SHIFT : 'shift',
wx.WXK_ALT : 'alt',
wx.WXK_LEFT : 'left',
wx.WXK_UP : 'up',
wx.WXK_RIGHT : 'right',
wx.WXK_DOWN : 'down',
}
00683 def __init__(self, parent, id, figure):
"""
Initialise a FigureWx instance.
- Initialise the FigureCanvasBase and wxPanel parents.
- Set event handlers for:
EVT_SIZE (Resize event)
EVT_PAINT (Paint event)
"""
FigureCanvasBase.__init__(self, figure)
l,b,w,h = figure.bbox.get_bounds()
w = int(math.ceil(w))
h = int(math.ceil(h))
wx.Panel.__init__(self, parent, id, size=wx.Size(w, h))
self.bitmap =wx.EmptyBitmap(w, h)
DEBUG_MSG("__init__() - bitmap w:%d h:%d" % (w,h), 2, self)
self._isRealized = False
self._isConfigured = False
self._printQued = []
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_SIZE, self._onSize)
self.Bind(wx.EVT_PAINT, self._onPaint)
self.Bind(wx.EVT_KEY_DOWN, self._onKeyDown)
self.Bind(wx.EVT_KEY_UP, self._onKeyUp)
self.Bind(wx.EVT_RIGHT_DOWN, self._onRightButtonDown)
self.Bind(wx.EVT_RIGHT_UP, self._onRightButtonUp)
self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
self.Bind(wx.EVT_LEFT_DOWN, self._onLeftButtonDown)
self.Bind(wx.EVT_LEFT_UP, self._onLeftButtonUp)
self.Bind(wx.EVT_MOTION, self._onMotion)
else:
wx.EVT_SIZE(self, self._onSize)
wx.EVT_PAINT(self, self._onPaint)
wx.EVT_KEY_DOWN(self, self._onKeyDown)
wx.EVT_KEY_UP(self, self._onKeyUp)
wx.EVT_RIGHT_DOWN(self, self._onRightButtonDown)
wx.EVT_RIGHT_UP(self, self._onRightButtonUp)
wx.EVT_MOUSEWHEEL(self, self._onMouseWheel)
wx.EVT_LEFT_DOWN(self, self._onLeftButtonDown)
wx.EVT_LEFT_UP(self, self._onLeftButtonUp)
wx.EVT_MOTION(self, self._onMotion)
self.macros = {}
self.Printer_Init()
def Destroy(self, *args, **kwargs):
wx.Panel.Destroy(self, *args, **kwargs)
def Copy_to_Clipboard(self, event=None):
"copy bitmap of canvas to system clipboard"
bmp_obj = wx.BitmapDataObject()
bmp_obj.SetBitmap(self.bitmap)
wx.TheClipboard.Open()
wx.TheClipboard.SetData(bmp_obj)
wx.TheClipboard.Close()
00751 def Printer_Init(self):
"""initialize printer settings using wx methods"""
self.printerData = wx.PrintData()
self.printerData.SetPaperId(wx.PAPER_LETTER)
self.printerData.SetPrintMode(wx.PRINT_MODE_PRINTER)
self.printerPageData= wx.PageSetupDialogData()
self.printerPageData.SetMarginBottomRight((25,25))
self.printerPageData.SetMarginTopLeft((25,25))
self.printerPageData.SetPrintData(self.printerData)
self.printer_width = 5.5
self.printer_margin= 0.5
00764 def Printer_Setup(self, event=None):
"""set up figure for printing. The standard wx Printer
Setup Dialog seems to die easily. Therefore, this setup
simply asks for image width and margin for printing. """
dmsg = """Width of output figure in inches.
The current aspect ration will be kept."""
dlg = wx.Dialog(self, -1, 'Page Setup for Printing' , (-1,-1))
df = dlg.GetFont()
df.SetWeight(wx.NORMAL)
df.SetPointSize(11)
dlg.SetFont(df)
x_wid = wx.TextCtrl(dlg,-1,value="%.2f" % self.printer_width, size=(70,-1))
x_mrg = wx.TextCtrl(dlg,-1,value="%.2f" % self.printer_margin,size=(70,-1))
sizerAll = wx.BoxSizer(wx.VERTICAL)
sizerAll.Add(wx.StaticText(dlg,-1,dmsg),
0, wx.ALL | wx.EXPAND, 5)
sizer = wx.FlexGridSizer(0,3)
sizerAll.Add(sizer, 0, wx.ALL | wx.EXPAND, 5)
sizer.Add(wx.StaticText(dlg,-1,'Figure Width'),
1, wx.ALIGN_LEFT|wx.ALL, 2)
sizer.Add(x_wid,
1, wx.ALIGN_LEFT|wx.ALL, 2)
sizer.Add(wx.StaticText(dlg,-1,'in'),
1, wx.ALIGN_LEFT|wx.ALL, 2)
sizer.Add(wx.StaticText(dlg,-1,'Margin'),
1, wx.ALIGN_LEFT|wx.ALL, 2)
sizer.Add(x_mrg,
1, wx.ALIGN_LEFT|wx.ALL, 2)
sizer.Add(wx.StaticText(dlg,-1,'in'),
1, wx.ALIGN_LEFT|wx.ALL, 2)
btn = wx.Button(dlg,wx.ID_OK, " OK ")
btn.SetDefault()
sizer.Add(btn, 1, wx.ALIGN_LEFT, 5)
btn = wx.Button(dlg,wx.ID_CANCEL, " CANCEL ")
sizer.Add(btn, 1, wx.ALIGN_LEFT, 5)
dlg.SetSizer(sizerAll)
dlg.SetAutoLayout(True)
sizerAll.Fit(dlg)
if dlg.ShowModal() == wx.ID_OK:
try:
self.printer_width = float(x_wid.GetValue())
self.printer_margin = float(x_mrg.GetValue())
except:
pass
if ((self.printer_width + self.printer_margin) > 7.5):
self.printerData.SetOrientation(wx.LANDSCAPE)
else:
self.printerData.SetOrientation(wx.PORTRAIT)
dlg.Destroy()
return
00826 def Printer_Setup2(self, event=None):
"""set up figure for printing. Using the standard wx Printer
Setup Dialog. """
if hasattr(self, 'printerData'):
data = wx.PageSetupDialogData()
data.SetPrintData(self.printerData)
else:
data = wx.PageSetupDialogData()
data.SetMarginTopLeft( (15, 15) )
data.SetMarginBottomRight( (15, 15) )
dlg = wx.PageSetupDialog(self, data)
if dlg.ShowModal() == wx.ID_OK:
data = dlg.GetPageSetupData()
tl = data.GetMarginTopLeft()
br = data.GetMarginBottomRight()
self.printerData = wx.PrintData(data.GetPrintData())
dlg.Destroy()
00847 def Printer_Preview(self, event=None):
""" generate Print Preview with wx Print mechanism"""
po1 = PrintoutWx(self, width=self.printer_width,
margin=self.printer_margin)
po2 = PrintoutWx(self, width=self.printer_width,
margin=self.printer_margin)
self.preview = wx.PrintPreview(po1,po2,self.printerData)
if not self.preview.Ok(): print "error with preview"
self.preview.SetZoom(50)
frameInst= self
while not isinstance(frameInst, wx.Frame):
frameInst= frameInst.GetParent()
frame = wx.PreviewFrame(self.preview, frameInst, "Preview")
frame.Initialize()
frame.SetPosition(self.GetPosition())
frame.SetSize((850,650))
frame.Centre(wx.BOTH)
frame.Show(True)
self.gui_repaint()
00868 def Printer_Print(self, event=None):
""" Print figure using wx Print mechanism"""
pdd = wx.PrintDialogData()
pdd.SetPrintData(self.printerData)
pdd.SetToPage(1)
printer = wx.Printer(pdd)
printout = PrintoutWx(self, width=int(self.printer_width),
margin=int(self.printer_margin))
print_ok = printer.Print(self, printout, True)
if wx.VERSION_STRING >= '2.5':
if not print_ok and not printer.GetLastError() == wx.PRINTER_CANCELLED:
wx.MessageBox("""There was a problem printing.
Perhaps your current printer is not set correctly?""",
"Printing", wx.OK)
else:
if not print_ok:
wx.MessageBox("""There was a problem printing.
Perhaps your current printer is not set correctly?""",
"Printing", wx.OK)
printout.Destroy()
self.gui_repaint()
00893 def draw(self, repaint=True):
"""
Render the figure using RendererWx instance renderer, or using a
previously defined renderer if none is specified.
"""
DEBUG_MSG("draw()", 1, self)
self.renderer = RendererWx(self.bitmap, self.figure.dpi)
self.figure.draw(self.renderer)
if repaint:
self.gui_repaint()
def _get_imagesave_wildcards(self):
'return the wildcard string for the filesave dialog'
return "JPEG (*.jpg)|*.jpg|" \
"PS (*.ps)|*.ps|" \
"EPS (*.eps)|*.eps|" \
"SVG (*.svg)|*.svg|" \
"BMP (*.bmp)|*.bmp|" \
"PCX (*.pcx)|*.pcx|" \
"PNG (*.png)|*.png|" \
"XPM (*.xpm)|*.xpm"
00915 def gui_repaint(self, drawDC=None):
"""
Performs update of the displayed image on the GUI canvas, using the
supplied device context. If drawDC is None, a ClientDC will be used to
redraw the image.
"""
DEBUG_MSG("gui_repaint()", 1, self)
if drawDC is None:
drawDC=wx.ClientDC(self)
drawDC.BeginDrawing()
drawDC.DrawBitmap(self.bitmap, 0, 0)
drawDC.EndDrawing()
00929 def print_figure(self, filename, dpi=None, facecolor='w', edgecolor='w',
orientation='portrait', **kwargs):
"""
Render the figure to hardcopy
"""
if dpi is None: dpi = matplotlib.rcParams['savefig.dpi']
DEBUG_MSG("print_figure()", 1, self)
root, ext = os.path.splitext(filename)
if ext.find('ps')>=0:
from backend_ps import FigureCanvasPS
DEBUG_MSG("print_figure() saving PS", 1, self)
origDPI = self.figure.dpi.get()
ps = self.switch_backends(FigureCanvasPS)
ps.figure.dpi.set(72)
ps.print_figure(filename, 72, facecolor, edgecolor, orientation,
**kwargs)
self.figure.dpi.set(origDPI)
self.figure.set_canvas(self)
return
elif ext.find('svg')>=0:
from backend_svg import FigureCanvasSVG
DEBUG_MSG("print_figure() saving SVG", 1, self)
origDPI = self.figure.dpi.get()
svg = self.switch_backends(FigureCanvasSVG)
svg.figure.dpi.set(72)
svg.print_figure(filename, 72, facecolor, edgecolor, orientation,
**kwargs)
self.figure.dpi.set(origDPI)
self.figure.set_canvas(self)
return
if not self._isRealized:
self._printQued.append((filename, dpi, facecolor, edgecolor))
return
origfacecolor = self.figure.get_facecolor()
origedgecolor = self.figure.get_edgecolor()
origDPI = self.figure.dpi.get()
self.figure.dpi.set(dpi)
self.figure.set_facecolor(facecolor)
self.figure.set_edgecolor(edgecolor)
origBitmap = self.bitmap
l,b,width,height = self.figure.bbox.get_bounds()
width = int(math.ceil(width))
height = int(math.ceil(height))
DEBUG_MSG('print_figure(): bitmap w:%d h:%d' % (width, height), 2, self)
self.bitmap =wx.EmptyBitmap(width, height)
renderer = RendererWx(self.bitmap, self.figure.dpi)
gc = renderer.new_gc()
self.figure.draw(renderer)
self.figure.set_facecolor(origfacecolor)
self.figure.set_edgecolor(origedgecolor)
self.figure.dpi.set(origDPI)
try:
filetype = _FILETYPES[os.path.splitext(filename)[1]]
except KeyError:
filetype = wx.BITMAP_TYPE_JPEG
filename = filename + '.jpg'
if not self.bitmap.SaveFile(filename, filetype):
DEBUG_MSG('print_figure() file save error', 4, self)
error_msg_wx('Could not save figure to %s\n' % (filename))
self.bitmap = origBitmap
self.draw()
self.Refresh()
01026 def realize(self):
"""
This method will be called when the system is ready to draw,
eg when a GUI window is realized
"""
DEBUG_MSG("realize()", 1, self)
self._isRealized = True
for fname, dpi, facecolor, edgecolor in self._printQued:
self.print_figure(fname, dpi, facecolor, edgecolor)
self._printQued = []
01039 def _onPaint(self, evt):
"""
Called when wxPaintEvt is generated
"""
DEBUG_MSG("_onPaint()", 1, self)
if not self._isRealized:
self.realize()
self.draw(repaint=False)
self.gui_repaint(drawDC=wx.PaintDC(self))
evt.Skip()
01053 def _onSize(self, evt):
"""
Called when wxEventSize is generated.
In this application we attempt to resize to fit the window, so it
is better to take the performance hit and redraw the whole window.
"""
DEBUG_MSG("_onSize()", 2, self)
self._width, self._height = self.GetClientSize()
self.bitmap =wx.EmptyBitmap(self._width, self._height)
if self._width <= 1 or self._height <= 1: return
if not self._isConfigured:
self._isConfigured = True
dpival = self.figure.dpi.get()
winch = self._width/dpival
hinch = self._height/dpival
self.figure.set_size_inches(winch, hinch)
if self._isRealized:
self.draw()
evt.Skip()
def _get_key(self, evt):
keyval = evt.m_keyCode
if self.keyvald.has_key(keyval):
key = self.keyvald[keyval]
elif keyval <256:
key = chr(keyval)
else:
key = None
if key is not None: key = key.lower()
return key
01096 def _onKeyDown(self, evt):
"""Capture key press."""
key = self._get_key(evt)
evt.Skip()
FigureCanvasBase.key_press_event(self, key, guiEvent=evt)
01102 def _onKeyUp(self, evt):
"""Release key."""
key = self._get_key(evt)
evt.Skip()
FigureCanvasBase.key_release_event(self, key, guiEvent=evt)
01109 def _onRightButtonDown(self, evt):
"""Start measuring on an axis."""
x = evt.GetX()
y = self.figure.bbox.height() - evt.GetY()
evt.Skip()
FigureCanvasBase.button_press_event(self, x, y, 3, guiEvent=evt)
01117 def _onRightButtonUp(self, evt):
"""End measuring on an axis."""
x = evt.GetX()
y = self.figure.bbox.height() - evt.GetY()
evt.Skip()
FigureCanvasBase.button_release_event(self, x, y, 3, guiEvent=evt)
01124 def _onLeftButtonDown(self, evt):
"""Start measuring on an axis."""
x = evt.GetX()
y = self.figure.bbox.height() - evt.GetY()
evt.Skip()
FigureCanvasBase.button_press_event(self, x, y, 1, guiEvent=evt)
01131 def _onLeftButtonUp(self, evt):
"""End measuring on an axis."""
x = evt.GetX()
y = self.figure.bbox.height() - evt.GetY()
evt.Skip()
FigureCanvasBase.button_release_event(self, x, y, 1, guiEvent=evt)
def _onMouseWheel(self, evt):
pass
01143 def _onMotion(self, evt):
"""Start measuring on an axis."""
x = evt.GetX()
y = self.figure.bbox.height() - evt.GetY()
evt.Skip()
FigureCanvasBase.motion_notify_event(self, x, y, guiEvent=evt)
def draw_if_interactive():
"""
This should be overriden in a windowing environment if drawing
should be done in interactive python mode
"""
DEBUG_MSG("draw_if_interactive()", 1, None)
if matplotlib.is_interactive():
figManager = Gcf.get_active()
if figManager is not None:
figManager.canvas.draw()
def show():
"""
Current implementation assumes that matplotlib is executed in a PyCrust
shell. It appears to be possible to execute wxPython applications from
within a PyCrust without having to ensure that wxPython has been created
in a secondary thread (e.g. SciPy gui_thread).
Unfortunately, gui_thread seems to introduce a number of further
dependencies on SciPy modules, which I do not wish to introduce
into the backend at this point. If there is a need I will look
into this in a later release.
"""
DEBUG_MSG("show()", 3, None)
for figwin in Gcf.get_all_fig_managers():
figwin.frame.Show()
figwin.canvas.realize()
figwin.canvas.draw()
if show._needmain and not matplotlib.is_interactive():
if wxapp is not None: wxapp.MainLoop()
show._needmain = False
show._needmain = True
def new_figure_manager(num, *args, **kwargs):
"""
Create a new figure manager instance
"""
global wxapp
DEBUG_MSG("new_figure_manager()", 3, None)
wxapp = wx.GetApp()
if wxapp is None:
wxapp = wx.PySimpleApp()
wxapp.SetExitOnFrameDelete(True)
FigureClass = kwargs.pop('FigureClass', Figure)
fig = FigureClass(*args, **kwargs)
frame = FigureFrameWx(num, fig)
figmgr = frame.get_figure_manager()
if matplotlib.is_interactive():
figmgr.canvas.realize()
figmgr.frame.Show()
return figmgr
class FigureFrameWx(wx.Frame):
def __init__(self, num, fig):
if wx.Platform == '__WXMSW__':
pos = wx.DefaultPosition
else:
pos =wx.Point(20,20)
l,b,w,h = fig.bbox.get_bounds()
wx.Frame.__init__(self, parent=None, id=-1, pos=pos,
title="Figure %d" % num,
size=(w,h))
DEBUG_MSG("__init__()", 1, self)
self.num = num
self.canvas = self.get_canvas(fig)
statbar = StatusBarWx(self)
self.SetStatusBar(statbar)
self.sizer =wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.canvas, 1, wx.TOP | wx.LEFT | wx.EXPAND)
self.toolbar = self._get_toolbar(statbar)
if self.toolbar is not None:
self.toolbar.Realize()
if wx.Platform == '__WXMAC__':
self.SetToolBar(self.toolbar)
else:
tw, th = self.toolbar.GetSizeTuple()
fw, fh = self.canvas.GetSizeTuple()
self.toolbar.SetSize(wx.Size(fw, th))
self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
self.SetSizer(self.sizer)
self.Fit()
self.figmgr = FigureManagerWx(self.canvas, num, self)
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_CLOSE, self._onClose)
else:
wx.EVT_CLOSE(self, self._onClose)
def _get_toolbar(self, statbar):
if matplotlib.rcParams['toolbar']=='classic':
toolbar = NavigationToolbarWx(self.canvas, True)
elif matplotlib.rcParams['toolbar']=='toolbar2':
toolbar = NavigationToolbar2Wx(self.canvas)
toolbar.set_status_bar(statbar)
else:
toolbar = None
return toolbar
def get_canvas(self, fig):
return FigureCanvasWx(self, -1, fig)
def get_figure_manager(self):
DEBUG_MSG("get_figure_manager()", 1, self)
return self.figmgr
def _onClose(self, evt):
DEBUG_MSG("onClose()", 1, self)
Gcf.destroy(self.num)
def GetToolBar(self):
"""Override wxFrame::GetToolBar as we don't have managed toolbar"""
return self.toolbar
def Destroy(self, *args, **kwargs):
wx.Frame.Destroy(self, *args, **kwargs)
if self.toolbar is not None:
self.toolbar.Destroy()
01308 class FigureManagerWx(FigureManagerBase):
"""
This class contains the FigureCanvas and GUI frame
It is instantiated by GcfWx whenever a new figure is created. GcfWx is
responsible for managing multiple instances of FigureManagerWx.
NB: FigureManagerBase is found in _pylab_helpers
public attrs
canvas - a FigureCanvasWx(wx.Panel) instance
window - a wxFrame instance - http://www.lpthe.jussieu.fr/~zeitlin/wxWindows/docs/wxwin_wxframe.html#wxframe
"""
def __init__(self, canvas, num, frame):
DEBUG_MSG("__init__()", 1, self)
FigureManagerBase.__init__(self, canvas, num)
self.frame = frame
self.window = frame
self.tb = frame.GetToolBar()
self.toolbar = self.tb
def notify_axes_change(fig):
'this will be called whenever the current axes is changed'
if self.tb != None: self.tb.update()
self.canvas.figure.add_axobserver(notify_axes_change)
def destroy(self, *args):
DEBUG_MSG("destroy()", 1, self)
self.frame.Destroy()
self.canvas.Destroy()
import wx
wx.WakeUpIdle()
_NTB_AXISMENU =wx.NewId()
_NTB_AXISMENU_BUTTON =wx.NewId()
_NTB_X_PAN_LEFT =wx.NewId()
_NTB_X_PAN_RIGHT =wx.NewId()
_NTB_X_ZOOMIN =wx.NewId()
_NTB_X_ZOOMOUT =wx.NewId()
_NTB_Y_PAN_UP =wx.NewId()
_NTB_Y_PAN_DOWN =wx.NewId()
_NTB_Y_ZOOMIN =wx.NewId()
_NTB_Y_ZOOMOUT =wx.NewId()
_NTB_SAVE =wx.NewId()
_NTB_CLOSE =wx.NewId()
def _load_bitmap(filename):
"""
Load a bitmap file from the backends/images subdirectory in which the
matplotlib library is installed. The filename parameter should not
contain any path information as this is determined automatically.
Bitmaps should be in XPM format, and of size 16x16 (unless you change
the code!). I have converted the stock GTK2 16x16 icons to XPM format.
Returns a wx.Bitmap object
"""
basedir = os.path.join(rcParams['datapath'],'images')
bmpFilename = os.path.normpath(os.path.join(basedir, filename))
if not os.path.exists(bmpFilename):
raise IOError('Could not find bitmap file "%s"; dying'%bmpFilename)
bmp =wx.Bitmap(bmpFilename, wx.BITMAP_TYPE_XPM)
return bmp
01384 class MenuButtonWx(wx.Button):
"""
wxPython does not permit a menu to be incorporated directly into a toolbar.
This class simulates the effect by associating a pop-up menu with a button
in the toolbar, and managing this as though it were a menu.
"""
def __init__(self, parent):
wx.Button.__init__(self, parent, _NTB_AXISMENU_BUTTON, "Axes: ",
style=wx.BU_EXACTFIT)
self._toolbar = parent
self._menu =wx.Menu()
self._axisId = []
self._allId =wx.NewId()
self._invertId =wx.NewId()
self._menu.Append(self._allId, "All", "Select all axes", False)
self._menu.Append(self._invertId, "Invert", "Invert axes selected", False)
self._menu.AppendSeparator()
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_BUTTON, self._onMenuButton, id=_NTB_AXISMENU_BUTTON)
self.Bind(wx.EVT_MENU, self._handleSelectAllAxes, id=self._allId)
self.Bind(wx.EVT_MENU, self._handleInvertAxesSelected, id=self._invertId)
else:
wx.EVT_BUTTON(self, _NTB_AXISMENU_BUTTON, self._onMenuButton)
wx.EVT_MENU(self, self._allId, self._handleSelectAllAxes)
wx.EVT_MENU(self, self._invertId, self._handleInvertAxesSelected)
def Destroy(self):
self._menu.Destroy()
self.Destroy()
01417 def _onMenuButton(self, evt):
"""Handle menu button pressed."""
x, y = self.GetPositionTuple()
w, h = self.GetSizeTuple()
self.PopupMenuXY(self._menu, x, y+h-4)
evt.Skip()
01425 def _handleSelectAllAxes(self, evt):
"""Called when the 'select all axes' menu item is selected."""
if len(self._axisId) == 0:
return
for i in range(len(self._axisId)):
self._menu.Check(self._axisId[i], True)
self._toolbar.set_active(self.getActiveAxes())
evt.Skip()
01434 def _handleInvertAxesSelected(self, evt):
"""Called when the invert all menu item is selected"""
if len(self._axisId) == 0: return
for i in range(len(self._axisId)):
if self._menu.IsChecked(self._axisId[i]):
self._menu.Check(self._axisId[i], False)
else:
self._menu.Check(self._axisId[i], True)
self._toolbar.set_active(self.getActiveAxes())
evt.Skip()
01445 def _onMenuItemSelected(self, evt):
"""Called whenever one of the specific axis menu items is selected"""
current = self._menu.IsChecked(evt.GetId())
if current:
new = False
else:
new = True
self._menu.Check(evt.GetId(), new)
self._toolbar.set_active(self.getActiveAxes())
evt.Skip()
01456 def updateAxes(self, maxAxis):
"""Ensures that there are entries for max_axis axes in the menu
(selected by default)."""
if maxAxis > len(self._axisId):
for i in range(len(self._axisId) + 1, maxAxis + 1, 1):
menuId =wx.NewId()
self._axisId.append(menuId)
self._menu.Append(menuId, "Axis %d" % i, "Select axis %d" % i, True)
self._menu.Check(menuId, True)
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_MENU, self._onMenuItemSelected, id=menuId)
else:
wx.EVT_MENU(self, menuId, self._onMenuItemSelected)
self._toolbar.set_active(range(len(self._axisId)))
01472 def getActiveAxes(self):
"""Return a list of the selected axes."""
active = []
for i in range(len(self._axisId)):
if self._menu.IsChecked(self._axisId[i]):
active.append(i)
return active
01480 def updateButtonText(self, lst):
"""Update the list of selected axes in the menu button"""
axis_txt = ''
for e in lst:
axis_txt += '%d,' % (e+1)
self.SetLabel("Axes: %s" % axis_txt[:-1])
cursord = {
cursors.MOVE : wx.CURSOR_HAND,
cursors.HAND : wx.CURSOR_HAND,
cursors.POINTER : wx.CURSOR_ARROW,
cursors.SELECT_REGION : wx.CURSOR_CROSS,
}
class SubplotToolWX(wx.Frame):
def __init__(self, targetfig):
wx.Frame.__init__(self, None, -1, "Configure subplots")
toolfig = Figure((6,3))
canvas = FigureCanvasWx(self, -1, toolfig)
figmgr = FigureManager(canvas, 1, self)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(canvas, 1, wx.LEFT|wx.TOP|wx.GROW)
self.SetSizer(sizer)
self.Fit()
tool = SubplotTool(targetfig, toolfig)
class NavigationToolbar2Wx(NavigationToolbar2, wx.ToolBar):
def __init__(self, canvas):
wx.ToolBar.__init__(self, canvas.GetParent(), -1)
NavigationToolbar2.__init__(self, canvas)
self.canvas = canvas
self._idle = True
self.statbar = None
def get_canvas(self, frame, fig):
return FigureCanvasWx(frame, -1, fig)
def _init_toolbar(self):
DEBUG_MSG("_init_toolbar", 1, self)
self._parent = self.canvas.GetParent()
_NTB2_HOME =wx.NewId()
self._NTB2_BACK =wx.NewId()
self._NTB2_FORWARD =wx.NewId()
self._NTB2_PAN =wx.NewId()
self._NTB2_ZOOM =wx.NewId()
_NTB2_SAVE = wx.NewId()
_NTB2_SUBPLOT =wx.NewId()
self.SetToolBitmapSize(wx.Size(24,24))
self.AddSimpleTool(_NTB2_HOME, _load_bitmap('home.xpm'),
'Home', 'Reset original view')
self.AddSimpleTool(self._NTB2_BACK, _load_bitmap('back.xpm'),
'Back', 'Back navigation view')
self.AddSimpleTool(self._NTB2_FORWARD, _load_bitmap('forward.xpm'),
'Forward', 'Forward navigation view')
self.AddCheckTool(self._NTB2_PAN, _load_bitmap('move.xpm'),
shortHelp='Pan',
longHelp='Pan with left, zoom with right')
self.AddCheckTool(self._NTB2_ZOOM, _load_bitmap('zoom_to_rect.xpm'),
shortHelp='Zoom', longHelp='Zoom to rectangle')
self.AddSeparator()
self.AddSimpleTool(_NTB2_SUBPLOT, _load_bitmap('subplots.xpm'),
'Configure subplots', 'Configure subplot parameters')
self.AddSimpleTool(_NTB2_SAVE, _load_bitmap('filesave.xpm'),
'Save', 'Save plot contents to file')
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_TOOL, self.home, id=_NTB2_HOME)
self.Bind(wx.EVT_TOOL, self.forward, id=self._NTB2_FORWARD)
self.Bind(wx.EVT_TOOL, self.back, id=self._NTB2_BACK)
self.Bind(wx.EVT_TOOL, self.zoom, id=self._NTB2_ZOOM)
self.Bind(wx.EVT_TOOL, self.pan, id=self._NTB2_PAN)
self.Bind(wx.EVT_TOOL, self.configure_subplot, id=_NTB2_SUBPLOT)
self.Bind(wx.EVT_TOOL, self.save, id=_NTB2_SAVE)
else:
wx.EVT_TOOL(self, _NTB2_HOME, self.home)
wx.EVT_TOOL(self, self._NTB2_FORWARD, self.forward)
wx.EVT_TOOL(self, self._NTB2_BACK, self.back)
wx.EVT_TOOL(self, self._NTB2_ZOOM, self.zoom)
wx.EVT_TOOL(self, self._NTB2_PAN, self.pan)
wx.EVT_TOOL(self, _NTB2_SUBPLOT, self.configure_subplot)
wx.EVT_TOOL(self, _NTB2_SAVE, self.save)
self.Realize()
def zoom(self, *args):
self.ToggleTool(self._NTB2_PAN, False)
NavigationToolbar2.zoom(self, *args)
def pan(self, *args):
self.ToggleTool(self._NTB2_ZOOM, False)
NavigationToolbar2.pan(self, *args)
def configure_subplot(self, evt):
frame = wx.Frame(None, -1, "Configure subplots")
toolfig = Figure((6,3))
canvas = self.get_canvas(frame, toolfig)
figmgr = FigureManager(canvas, 1, frame)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(canvas, 1, wx.LEFT|wx.TOP|wx.GROW)
frame.SetSizer(sizer)
frame.Fit()
tool = SubplotTool(self.canvas.figure, toolfig)
frame.Show()
def save(self, evt):
filetypes = self.canvas._get_imagesave_wildcards()
dlg =wx.FileDialog(self._parent, "Save to file", "", "", filetypes,
wx.SAVE|wx.OVERWRITE_PROMPT|wx.CHANGE_DIR)
if dlg.ShowModal() == wx.ID_OK:
dirname = dlg.GetDirectory()
filename = dlg.GetFilename()
DEBUG_MSG('Save file dir:%s name:%s' % (dirname, filename), 3, self)
self.canvas.print_figure(os.path.join(dirname, filename))
def set_cursor(self, cursor):
cursor =wx.StockCursor(cursord[cursor])
self.canvas.SetCursor( cursor )
def release(self, event):
try: del self.lastrect
except AttributeError: pass
def dynamic_update(self):
d = self._idle
self._idle = False
if d:
self.canvas.draw()
self._idle = True
def draw_rubberband(self, event, x0, y0, x1, y1):
'adapted from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/189744'
canvas = self.canvas
dc =wx.ClientDC(canvas)
dc.SetLogicalFunction(wx.XOR)
wbrush =wx.Brush(wx.Colour(255,255,255), wx.TRANSPARENT)
wpen =wx.Pen(wx.Colour(200, 200, 200), 1, wx.SOLID)
dc.SetBrush(wbrush)
dc.SetPen(wpen)
dc.ResetBoundingBox()
dc.BeginDrawing()
height = self.canvas.figure.bbox.height()
y1 = height - y1
y0 = height - y0
if y1<y0: y0, y1 = y1, y0
if x1<y0: x0, x1 = x1, x0
w = x1 - x0
h = y1 - y0
rect = int(x0), int(y0), int(w), int(h)
try: lastrect = self.lastrect
except AttributeError: pass
else: dc.DrawRectangle(*lastrect)
self.lastrect = rect
dc.DrawRectangle(*rect)
dc.EndDrawing()
def set_status_bar(self, statbar):
self.statbar = statbar
def set_message(self, s):
if self.statbar is not None: self.statbar.set_function(s)
def set_history_buttons(self):
can_backward = (self._views._pos > 0)
can_forward = (self._views._pos < len(self._views._elements) - 1)
self.EnableTool(self._NTB2_BACK, can_backward)
self.EnableTool(self._NTB2_FORWARD, can_forward)
class NavigationToolbarWx(wx.ToolBar):
def __init__(self, canvas, can_kill=False):
"""
figure is the Figure instance that the toolboar controls
win, if not None, is the wxWindow the Figure is embedded in
"""
wx.ToolBar.__init__(self, canvas.GetParent(), -1)
DEBUG_MSG("__init__()", 1, self)
self.canvas = canvas
self._lastControl = None
self._mouseOnButton = None
self._parent = canvas.GetParent()
self._NTB_BUTTON_HANDLER = {
_NTB_X_PAN_LEFT : self.panx,
_NTB_X_PAN_RIGHT : self.panx,
_NTB_X_ZOOMIN : self.zoomx,
_NTB_X_ZOOMOUT : self.zoomy,
_NTB_Y_PAN_UP : self.pany,
_NTB_Y_PAN_DOWN : self.pany,
_NTB_Y_ZOOMIN : self.zoomy,
_NTB_Y_ZOOMOUT : self.zoomy }
self._create_menu()
self._create_controls(can_kill)
self.Realize()
def _create_menu(self):
"""
Creates the 'menu' - implemented as a button which opens a
pop-up menu since wxPython does not allow a menu as a control
"""
DEBUG_MSG("_create_menu()", 1, self)
self._menu = MenuButtonWx(self)
self.AddControl(self._menu)
self.AddSeparator()
def _create_controls(self, can_kill):
"""
Creates the button controls, and links them to event handlers
"""
DEBUG_MSG("_create_controls()", 1, self)
self.SetToolBitmapSize(wx.Size(16,16))
self.AddSimpleTool(_NTB_X_PAN_LEFT, _load_bitmap('stock_left.xpm'),
'Left', 'Scroll left')
self.AddSimpleTool(_NTB_X_PAN_RIGHT, _load_bitmap('stock_right.xpm'),
'Right', 'Scroll right')
self.AddSimpleTool(_NTB_X_ZOOMIN, _load_bitmap('stock_zoom-in.xpm'),
'Zoom in', 'Increase X axis magnification')
self.AddSimpleTool(_NTB_X_ZOOMOUT, _load_bitmap('stock_zoom-out.xpm'),
'Zoom out', 'Decrease X axis magnification')
self.AddSeparator()
self.AddSimpleTool(_NTB_Y_PAN_UP,_load_bitmap('stock_up.xpm'),
'Up', 'Scroll up')
self.AddSimpleTool(_NTB_Y_PAN_DOWN, _load_bitmap('stock_down.xpm'),
'Down', 'Scroll down')
self.AddSimpleTool(_NTB_Y_ZOOMIN, _load_bitmap('stock_zoom-in.xpm'),
'Zoom in', 'Increase Y axis magnification')
self.AddSimpleTool(_NTB_Y_ZOOMOUT, _load_bitmap('stock_zoom-out.xpm'),
'Zoom out', 'Decrease Y axis magnification')
self.AddSeparator()
self.AddSimpleTool(_NTB_SAVE, _load_bitmap('stock_save_as.xpm'),
'Save', 'Save plot contents as images')
self.AddSeparator()
if wx.VERSION_STRING >= '2.5':
self.Bind(wx.EVT_TOOL, self._onLeftScroll, id=_NTB_X_PAN_LEFT)
self.Bind(wx.EVT_TOOL, self._onRightScroll, id=_NTB_X_PAN_RIGHT)
self.Bind(wx.EVT_TOOL, self._onXZoomIn, id=_NTB_X_ZOOMIN)
self.Bind(wx.EVT_TOOL, self._onXZoomOut, id=_NTB_X_ZOOMOUT)
self.Bind(wx.EVT_TOOL, self._onUpScroll, id=_NTB_Y_PAN_UP)
self.Bind(wx.EVT_TOOL, self._onDownScroll, id=_NTB_Y_PAN_DOWN)
self.Bind(wx.EVT_TOOL, self._onYZoomIn, id=_NTB_Y_ZOOMIN)
self.Bind(wx.EVT_TOOL, self._onYZoomOut, id=_NTB_Y_ZOOMOUT)
self.Bind(wx.EVT_TOOL, self._onSave, id=_NTB_SAVE)
self.Bind(wx.EVT_TOOL_ENTER, self._onEnterTool, id=self.GetId())
if can_kill:
self.Bind(wx.EVT_TOOL, self._onClose, id=_NTB_CLOSE)
self.Bind(wx.EVT_MOUSEWHEEL, self._onMouseWheel)
else:
wx.EVT_TOOL(self, _NTB_X_PAN_LEFT, self._onLeftScroll)
wx.EVT_TOOL(self, _NTB_X_PAN_RIGHT, self._onRightScroll)
wx.EVT_TOOL(self, _NTB_X_ZOOMIN, self._onXZoomIn)
wx.EVT_TOOL(self, _NTB_X_ZOOMOUT, self._onXZoomOut)
wx.EVT_TOOL(self, _NTB_Y_PAN_UP, self._onUpScroll)
wx.EVT_TOOL(self, _NTB_Y_PAN_DOWN, self._onDownScroll)
wx.EVT_TOOL(self, _NTB_Y_ZOOMIN, self._onYZoomIn)
wx.EVT_TOOL(self, _NTB_Y_ZOOMOUT, self._onYZoomOut)
wx.EVT_TOOL(self, _NTB_SAVE, self._onSave)
wx.EVT_TOOL_ENTER(self, self.GetId(), self._onEnterTool)
if can_kill:
wx.EVT_TOOL(self, _NTB_CLOSE, self._onClose)
wx.EVT_MOUSEWHEEL(self, self._onMouseWheel)
def set_active(self, ind):
"""
ind is a list of index numbers for the axes which are to be made active
"""
DEBUG_MSG("set_active()", 1, self)
self._ind = ind
if ind != None:
self._active = [ self._axes[i] for i in self._ind ]
else:
self._active = []
self._menu.updateButtonText(ind)
def get_last_control(self):
"""Returns the identity of the last toolbar button pressed."""
return self._lastControl
def panx(self, direction):
DEBUG_MSG("panx()", 1, self)
for a in self._active:
a.panx(direction)
self.canvas.draw()
self.canvas.Refresh(eraseBackground=False)
def pany(self, direction):
DEBUG_MSG("pany()", 1, self)
for a in self._active:
a.pany(direction)
self.canvas.draw()
self.canvas.Refresh(eraseBackground=False)
def zoomx(self, in_out):
DEBUG_MSG("zoomx()", 1, self)
for a in self._active:
a.zoomx(in_out)
self.canvas.draw()
self.canvas.Refresh(eraseBackground=False)
def zoomy(self, in_out):
DEBUG_MSG("zoomy()", 1, self)
for a in self._active:
a.zoomy(in_out)
self.canvas.draw()
self.canvas.Refresh(eraseBackground=False)
def update(self):
"""
Update the toolbar menu - called when (e.g.) a new subplot or axes are added
"""
DEBUG_MSG("update()", 1, self)
self._axes = self.canvas.figure.get_axes()
self._menu.updateAxes(len(self._axes))
def _do_nothing(self, d):
"""A NULL event handler - does nothing whatsoever"""
pass
def _onEnterTool(self, evt):
toolId = evt.GetSelection()
try:
self.button_fn = self._NTB_BUTTON_HANDLER[toolId]
except KeyError:
self.button_fn = self._do_nothing
evt.Skip()
def _onLeftScroll(self, evt):
self.panx(-1)
evt.Skip()
def _onRightScroll(self, evt):
self.panx(1)
evt.Skip()
def _onXZoomIn(self, evt):
self.zoomx(1)
evt.Skip()
def _onXZoomOut(self, evt):
self.zoomx(-1)
evt.Skip()
def _onUpScroll(self, evt):
self.pany(1)
evt.Skip()
def _onDownScroll(self, evt):
self.pany(-1)
evt.Skip()
def _onYZoomIn(self, evt):
self.zoomy(1)
evt.Skip()
def _onYZoomOut(self, evt):
self.zoomy(-1)
evt.Skip()
def _onMouseEnterButton(self, button):
self._mouseOnButton = button
def _onMouseLeaveButton(self, button):
if self._mouseOnButton == button:
self._mouseOnButton = None
def _onMouseWheel(self, evt):
if evt.GetWheelRotation() > 0:
direction = 1
else:
direction = -1
self.button_fn(direction)
def _onRedraw(self, evt):
self.canvas.draw()
def _onSave(self, evt):
filetypes = self.canvas._get_imagesave_wildcards()
dlg =wx.FileDialog(self._parent, "Save to file", "", "", filetypes,
wx.SAVE|wx.OVERWRITE_PROMPT|wx.CHANGE_DIR)
if dlg.ShowModal() == wx.ID_OK:
dirname = dlg.GetDirectory()
filename = dlg.GetFilename()
DEBUG_MSG('Save file dir:%s name:%s' % (dirname, filename), 3, self)
self.canvas.print_figure(os.path.join(dirname, filename))
def _onClose(self, evt):
self.GetParent().Destroy()
01923 class StatusBarWx(wx.StatusBar):
"""
A status bar is added to _FigureFrame to allow measurements and the
previously selected scroll function to be displayed as a user
convenience.
"""
def __init__(self, parent):
wx.StatusBar.__init__(self, parent, -1)
self.SetFieldsCount(2)
self.SetStatusText("None", 1)
def set_function(self, string):
self.SetStatusText("%s" % string, 1)
01945 class PrintoutWx(wx.Printout):
"""Simple wrapper around wx Printout class -- all the real work
here is scaling the matplotlib canvas bitmap to the current
printer's definition.
"""
def __init__(self, canvas, width=5.5,margin=0.5, title='matplotlib'):
wx.Printout.__init__(self,title=title)
self.canvas = canvas
self.width = width
self.margin = margin
def HasPage(self, page):
return page == 1
def GetPageInfo(self):
return (1, 1, 1, 1)
def OnPrintPage(self, page):
self.canvas.draw()
dc = self.GetDC()
(ppw,pph) = self.GetPPIPrinter()
(pgw,pgh) = self.GetPageSizePixels()
(dcw,dch) = dc.GetSize()
(grw,grh) = self.canvas.GetSizeTuple()
bgcolor = self.canvas.figure.get_facecolor()
fig_dpi = self.canvas.figure.dpi.get()
vscale = float(ppw) / fig_dpi
self.canvas.figure.dpi.set(ppw)
self.canvas.figure.set_facecolor('#FFFFFF')
renderer = RendererWx(self.canvas.bitmap, self.canvas.figure.dpi)
self.canvas.figure.draw(renderer)
self.canvas.bitmap.SetWidth( int(self.canvas.bitmap.GetWidth() * vscale))
self.canvas.bitmap.SetHeight( int(self.canvas.bitmap.GetHeight()* vscale))
self.canvas.draw()
page_scale = 1.0
if self.IsPreview(): page_scale = float(dcw)/pgw
top_margin = int(self.margin * pph * page_scale)
left_margin = int(self.margin * ppw * page_scale)
user_scale = (self.width * fig_dpi * page_scale)/float(grw)
dc.SetDeviceOrigin(left_margin,top_margin)
dc.SetUserScale(user_scale,user_scale)
try:
dc.DrawBitmap(self.canvas.bitmap, 0, 0)
except:
try:
dc.DrawBitmap(self.canvas.bitmap, (0, 0))
except:
pass
self.canvas.figure.set_facecolor(bgcolor)
self.canvas.figure.dpi.set(fig_dpi)
self.canvas.draw()
return True
Toolbar = NavigationToolbarWx
FigureManager = FigureManagerWx