diff options
Diffstat (limited to 'gr-wxgui/python/wxgui/plot.py')
| -rw-r--r-- | gr-wxgui/python/wxgui/plot.py | 1834 |
1 files changed, 0 insertions, 1834 deletions
diff --git a/gr-wxgui/python/wxgui/plot.py b/gr-wxgui/python/wxgui/plot.py deleted file mode 100644 index 041a2a7a50..0000000000 --- a/gr-wxgui/python/wxgui/plot.py +++ /dev/null @@ -1,1834 +0,0 @@ -#----------------------------------------------------------------------------- -# Name: wx.lib.plot.py -# Purpose: Line, Bar and Scatter Graphs -# -# Author: Gordon Williams -# -# Created: 2003/11/03 -# RCS-ID: $Id$ -# Copyright: (c) 2002,2007,2010 -# Licence: Use as you wish. -#----------------------------------------------------------------------------- -# 12/15/2003 - Jeff Grimmett (grimmtooth@softhome.net) -# -# o 2.5 compatability update. -# o Renamed to plot.py in the wx.lib directory. -# o Reworked test frame to work with wx demo framework. This saves a bit -# of tedious cut and paste, and the test app is excellent. -# -# 12/18/2003 - Jeff Grimmett (grimmtooth@softhome.net) -# -# o wxScrolledMessageDialog -> ScrolledMessageDialog -# -# Oct 6, 2004 Gordon Williams (g_will@cyberus.ca) -# - Added bar graph demo -# - Modified line end shape from round to square. -# - Removed FloatDCWrapper for conversion to ints and ints in arguments -# -# Oct 15, 2004 Gordon Williams (g_will@cyberus.ca) -# - Imported modules given leading underscore to name. -# - Added Cursor Line Tracking and User Point Labels. -# - Demo for Cursor Line Tracking and Point Labels. -# - Size of plot preview frame adjusted to show page better. -# - Added helper functions PositionUserToScreen and PositionScreenToUser in PlotCanvas. -# - Added functions GetClosestPoints (all curves) and GetClosestPoint (only closest curve) -# can be in either user coords or screen coords. -# -# May 27, 2007 Johnathan Corgan (jcorgan@corganenterprises.com) -# - Converted from numarray to numpy -# -# Apr 23, 2010 Martin Dudok van Heel (http://www.olifantasia.com/gnuradio/contact_olifantasia.gif) -# - Added Persistence option (emulate after glow of an analog CRT display using IIR) - -""" -This is a simple light weight plotting module that can be used with -Boa or easily integrated into your own wxPython application. The -emphasis is on small size and fast plotting for large data sets. It -has a reasonable number of features to do line and scatter graphs -easily as well as simple bar graphs. It is not as sophisticated or -as powerful as SciPy Plt or Chaco. Both of these are great packages -but consume huge amounts of computer resources for simple plots. -They can be found at http://scipy.com - -This file contains two parts; first the re-usable library stuff, then, -after a "if __name__=='__main__'" test, a simple frame and a few default -plots for examples and testing. - -Based on wxPlotCanvas -Written by K.Hinsen, R. Srinivasan; -Ported to wxPython Harm van der Heijden, feb 1999 - -Major Additions Gordon Williams Feb. 2003 (g_will@cyberus.ca) - -More style options - -Zooming using mouse 'rubber band' - -Scroll left, right - -Grid(graticule) - -Printing, preview, and page set up (margins) - -Axis and title labels - -Cursor xy axis values - -Doc strings and lots of comments - -Optimizations for large number of points - -Legends - -Did a lot of work here to speed markers up. Only a factor of 4 -improvement though. Lines are much faster than markers, especially -filled markers. Stay away from circles and triangles unless you -only have a few thousand points. - -Times for 25,000 points -Line - 0.078 sec -Markers -Square - 0.22 sec -dot - 0.10 -circle - 0.87 -cross,plus - 0.28 -triangle, triangle_down - 0.90 - -Thanks to Chris Barker for getting this version working on Linux. - -Zooming controls with mouse (when enabled): - Left mouse drag - Zoom box. - Left mouse double click - reset zoom. - Right mouse click - zoom out centred on click location. -""" - -import string as _string -import time as _time -import wx - -# Needs numpy or numarray -try: - import numpy as _numpy -except: - try: - import numarray as _numpy #if numarray is used it is renamed numpy - except: - msg= """ - This module requires the numpy or numarray module, - which could not be imported. It probably is not installed - (it's not part of the standard Python distribution). See the - Python site (http://www.python.org) for information on - downloading source or binaries.""" - raise ImportError, "numpy or numarray not found. \n" + msg - - - -# -# Plotting classes... -# -class PolyPoints: - """Base Class for lines and markers - - All methods are private. - """ - - def __init__(self, points, attr): - self.points = _numpy.array(points) - self.currentScale= (1,1) - self.currentShift= (0,0) - self.scaled = self.points - self.attributes = {} - self.attributes.update(self._attributes) - for name, value in attr.items(): - if name not in self._attributes.keys(): - raise KeyError, "Style attribute incorrect. Should be one of %s" % self._attributes.keys() - self.attributes[name] = value - - def boundingBox(self): - if len(self.points) == 0: - # no curves to draw - # defaults to (-1,-1) and (1,1) but axis can be set in Draw - minXY= _numpy.array([-1,-1]) - maxXY= _numpy.array([ 1, 1]) - else: - minXY= _numpy.minimum.reduce(self.points) - maxXY= _numpy.maximum.reduce(self.points) - return minXY, maxXY - - def scaleAndShift(self, scale=(1,1), shift=(0,0)): - if len(self.points) == 0: - # no curves to draw - return - if (scale is not self.currentScale) or (shift is not self.currentShift): - # update point scaling - self.scaled = scale*self.points+shift - self.currentScale= scale - self.currentShift= shift - # else unchanged use the current scaling - - def getLegend(self): - return self.attributes['legend'] - - def getClosestPoint(self, pntXY, pointScaled= True): - """Returns the index of closest point on the curve, pointXY, scaledXY, distance - x, y in user coords - if pointScaled == True based on screen coords - if pointScaled == False based on user coords - """ - if pointScaled == True: - #Using screen coords - p = self.scaled - pxy = self.currentScale * _numpy.array(pntXY)+ self.currentShift - else: - #Using user coords - p = self.points - pxy = _numpy.array(pntXY) - #determine distance for each point - d= _numpy.sqrt(_numpy.add.reduce((p-pxy)**2,1)) #sqrt(dx^2+dy^2) - pntIndex = _numpy.argmin(d) - dist = d[pntIndex] - return [pntIndex, self.points[pntIndex], self.scaled[pntIndex], dist] - - -class PolyLine(PolyPoints): - """Class to define line type and style - - All methods except __init__ are private. - """ - - _attributes = {'colour': 'black', - 'width': 1, - 'style': wx.SOLID, - 'legend': ''} - - def __init__(self, points, **attr): - """Creates PolyLine object - points - sequence (array, tuple or list) of (x,y) points making up line - **attr - key word attributes - Defaults: - 'colour'= 'black', - wx.Pen Colour any wx.NamedColour - 'width'= 1, - Pen width - 'style'= wx.SOLID, - wx.Pen style - 'legend'= '' - Line Legend to display - """ - PolyPoints.__init__(self, points, attr) - - def draw(self, dc, printerScale, coord= None): - colour = self.attributes['colour'] - width = self.attributes['width'] * printerScale - style= self.attributes['style'] - pen = wx.Pen(wx.NamedColour(colour), width, style) - pen.SetCap(wx.CAP_BUTT) - dc.SetPen(pen) - if coord == None: - dc.DrawLines(self.scaled) - else: - dc.DrawLines(coord) # draw legend line - - def getSymExtent(self, printerScale): - """Width and Height of Marker""" - h= self.attributes['width'] * printerScale - w= 5 * h - return (w,h) - - -class PolyMarker(PolyPoints): - """Class to define marker type and style - - All methods except __init__ are private. - """ - - _attributes = {'colour': 'black', - 'width': 1, - 'size': 2, - 'fillcolour': None, - 'fillstyle': wx.SOLID, - 'marker': 'circle', - 'legend': ''} - - def __init__(self, points, **attr): - """Creates PolyMarker object - points - sequence (array, tuple or list) of (x,y) points - **attr - key word attributes - Defaults: - 'colour'= 'black', - wx.Pen Colour any wx.NamedColour - 'width'= 1, - Pen width - 'size'= 2, - Marker size - 'fillcolour'= same as colour, - wx.Brush Colour any wx.NamedColour - 'fillstyle'= wx.SOLID, - wx.Brush fill style (use wx.TRANSPARENT for no fill) - 'marker'= 'circle' - Marker shape - 'legend'= '' - Marker Legend to display - - Marker Shapes: - - 'circle' - - 'dot' - - 'square' - - 'triangle' - - 'triangle_down' - - 'cross' - - 'plus' - """ - - PolyPoints.__init__(self, points, attr) - - def draw(self, dc, printerScale, coord= None): - colour = self.attributes['colour'] - width = self.attributes['width'] * printerScale - size = self.attributes['size'] * printerScale - fillcolour = self.attributes['fillcolour'] - fillstyle = self.attributes['fillstyle'] - marker = self.attributes['marker'] - - dc.SetPen(wx.Pen(wx.NamedColour(colour), width)) - if fillcolour: - dc.SetBrush(wx.Brush(wx.NamedColour(fillcolour),fillstyle)) - else: - dc.SetBrush(wx.Brush(wx.NamedColour(colour), fillstyle)) - if coord == None: - self._drawmarkers(dc, self.scaled, marker, size) - else: - self._drawmarkers(dc, coord, marker, size) # draw legend marker - - def getSymExtent(self, printerScale): - """Width and Height of Marker""" - s= 5*self.attributes['size'] * printerScale - return (s,s) - - def _drawmarkers(self, dc, coords, marker,size=1): - f = eval('self._' +marker) - f(dc, coords, size) - - def _circle(self, dc, coords, size=1): - fact= 2.5*size - wh= 5.0*size - rect= _numpy.zeros((len(coords),4),_numpy.float)+[0.0,0.0,wh,wh] - rect[:,0:2]= coords-[fact,fact] - dc.DrawEllipseList(rect.astype(_numpy.int32)) - - def _dot(self, dc, coords, size=1): - dc.DrawPointList(coords) - - def _square(self, dc, coords, size=1): - fact= 2.5*size - wh= 5.0*size - rect= _numpy.zeros((len(coords),4),_numpy.float)+[0.0,0.0,wh,wh] - rect[:,0:2]= coords-[fact,fact] - dc.DrawRectangleList(rect.astype(_numpy.int32)) - - def _triangle(self, dc, coords, size=1): - shape= [(-2.5*size,1.44*size), (2.5*size,1.44*size), (0.0,-2.88*size)] - poly= _numpy.repeat(coords,3) - poly.shape= (len(coords),3,2) - poly += shape - dc.DrawPolygonList(poly.astype(_numpy.int32)) - - def _triangle_down(self, dc, coords, size=1): - shape= [(-2.5*size,-1.44*size), (2.5*size,-1.44*size), (0.0,2.88*size)] - poly= _numpy.repeat(coords,3) - poly.shape= (len(coords),3,2) - poly += shape - dc.DrawPolygonList(poly.astype(_numpy.int32)) - - def _cross(self, dc, coords, size=1): - fact= 2.5*size - for f in [[-fact,-fact,fact,fact],[-fact,fact,fact,-fact]]: - lines= _numpy.concatenate((coords,coords),axis=1)+f - dc.DrawLineList(lines.astype(_numpy.int32)) - - def _plus(self, dc, coords, size=1): - fact= 2.5*size - for f in [[-fact,0,fact,0],[0,-fact,0,fact]]: - lines= _numpy.concatenate((coords,coords),axis=1)+f - dc.DrawLineList(lines.astype(_numpy.int32)) - -class PlotGraphics: - """Container to hold PolyXXX objects and graph labels - - All methods except __init__ are private. - """ - - def __init__(self, objects, title='', xLabel='', yLabel= ''): - """Creates PlotGraphics object - objects - list of PolyXXX objects to make graph - title - title shown at top of graph - xLabel - label shown on x-axis - yLabel - label shown on y-axis - """ - if type(objects) not in [list,tuple]: - raise TypeError, "objects argument should be list or tuple" - self.objects = objects - self.title= title - self.xLabel= xLabel - self.yLabel= yLabel - - def boundingBox(self): - p1, p2 = self.objects[0].boundingBox() - for o in self.objects[1:]: - p1o, p2o = o.boundingBox() - p1 = _numpy.minimum(p1, p1o) - p2 = _numpy.maximum(p2, p2o) - return p1, p2 - - def scaleAndShift(self, scale=(1,1), shift=(0,0)): - for o in self.objects: - o.scaleAndShift(scale, shift) - - def setPrinterScale(self, scale): - """Thickens up lines and markers only for printing""" - self.printerScale= scale - - def setXLabel(self, xLabel= ''): - """Set the X axis label on the graph""" - self.xLabel= xLabel - - def setYLabel(self, yLabel= ''): - """Set the Y axis label on the graph""" - self.yLabel= yLabel - - def setTitle(self, title= ''): - """Set the title at the top of graph""" - self.title= title - - def getXLabel(self): - """Get x axis label string""" - return self.xLabel - - def getYLabel(self): - """Get y axis label string""" - return self.yLabel - - def getTitle(self, title= ''): - """Get the title at the top of graph""" - return self.title - - def draw(self, dc): - for o in self.objects: - #t=_time.clock() # profile info - o.draw(dc, self.printerScale) - #dt= _time.clock()-t - #print o, "time=", dt - - def getSymExtent(self, printerScale): - """Get max width and height of lines and markers symbols for legend""" - symExt = self.objects[0].getSymExtent(printerScale) - for o in self.objects[1:]: - oSymExt = o.getSymExtent(printerScale) - symExt = _numpy.maximum(symExt, oSymExt) - return symExt - - def getLegendNames(self): - """Returns list of legend names""" - lst = [None]*len(self) - for i in range(len(self)): - lst[i]= self.objects[i].getLegend() - return lst - - def __len__(self): - return len(self.objects) - - def __getitem__(self, item): - return self.objects[item] - - -#------------------------------------------------------------------------------- -# Main window that you will want to import into your application. - -class PlotCanvas(wx.Window): - """Subclass of a wx.Window to allow simple general plotting - of data with zoom, labels, and automatic axis scaling.""" - - def __init__(self, parent, id = -1, pos=wx.DefaultPosition, - size=wx.DefaultSize, style= wx.DEFAULT_FRAME_STYLE, name= ""): - - self.use_persistence=False - self.alpha=0.3 - self.decimation=10 - self.decim_counter=0 - """Constucts a window, which can be a child of a frame, dialog or - any other non-control window""" - - wx.Window.__init__(self, parent, id, pos, size, style, name) - self.border = (1,1) - - self.SetBackgroundColour("white") - - # Create some mouse events for zooming - self.Bind(wx.EVT_LEFT_DOWN, self.OnMouseLeftDown) - self.Bind(wx.EVT_LEFT_UP, self.OnMouseLeftUp) - self.Bind(wx.EVT_MOTION, self.OnMotion) - self.Bind(wx.EVT_LEFT_DCLICK, self.OnMouseDoubleClick) - self.Bind(wx.EVT_RIGHT_DOWN, self.OnMouseRightDown) - - # set curser as cross-hairs - self.SetCursor(wx.CROSS_CURSOR) - - # Things for printing - self.print_data = wx.PrintData() - self.print_data.SetPaperId(wx.PAPER_LETTER) - self.print_data.SetOrientation(wx.LANDSCAPE) - self.pageSetupData= wx.PageSetupDialogData() - self.pageSetupData.SetMarginBottomRight((25,25)) - self.pageSetupData.SetMarginTopLeft((25,25)) - self.pageSetupData.SetPrintData(self.print_data) - self.printerScale = 1 - self.parent= parent - - # Zooming variables - self._zoomInFactor = 0.5 - self._zoomOutFactor = 2 - self._zoomCorner1= _numpy.array([0.0, 0.0]) # left mouse down corner - self._zoomCorner2= _numpy.array([0.0, 0.0]) # left mouse up corner - self._zoomEnabled= False - self._hasDragged= False - - # Drawing Variables - self.last_draw = None - self._pointScale= 1 - self._pointShift= 0 - self._xSpec= 'auto' - self._ySpec= 'auto' - self._gridEnabled= False - self._legendEnabled= False - self._xUseScopeTicks= False - - # Fonts - self._fontCache = {} - self._fontSizeAxis= 10 - self._fontSizeTitle= 15 - self._fontSizeLegend= 7 - - # pointLabels - self._pointLabelEnabled= False - self.last_PointLabel= None - self._pointLabelFunc= None - self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeave) - - self.Bind(wx.EVT_PAINT, self.OnPaint) - self.Bind(wx.EVT_SIZE, self.OnSize) - # OnSize called to make sure the buffer is initialized. - # This might result in OnSize getting called twice on some - # platforms at initialization, but little harm done. - self.OnSize(None) # sets the initial size based on client size - # UNCONDITIONAL, needed to create self._Buffer - - - def set_use_persistence(self, enable): - self.use_persistence = enable - - def set_persist_alpha(self, persist_alpha): - self.alpha = persist_alpha - - - # SaveFile - def SaveFile(self, fileName= ''): - """Saves the file to the type specified in the extension. If no file - name is specified a dialog box is provided. Returns True if sucessful, - otherwise False. - - .bmp Save a Windows bitmap file. - .xbm Save an X bitmap file. - .xpm Save an XPM bitmap file. - .png Save a Portable Network Graphics file. - .jpg Save a Joint Photographic Experts Group file. - """ - if _string.lower(fileName[-3:]) not in ['bmp','xbm','xpm','png','jpg']: - dlg1 = wx.FileDialog( - self, - "Choose a file with extension bmp, gif, xbm, xpm, png, or jpg", ".", "", - "BMP files (*.bmp)|*.bmp|XBM files (*.xbm)|*.xbm|XPM file (*.xpm)|*.xpm|PNG files (*.png)|*.png|JPG files (*.jpg)|*.jpg", - wx.SAVE|wx.OVERWRITE_PROMPT - ) - try: - while 1: - if dlg1.ShowModal() == wx.ID_OK: - fileName = dlg1.GetPath() - # Check for proper exension - if _string.lower(fileName[-3:]) not in ['bmp','xbm','xpm','png','jpg']: - dlg2 = wx.MessageDialog(self, 'File name extension\n' - 'must be one of\n' - 'bmp, xbm, xpm, png, or jpg', - 'File Name Error', wx.OK | wx.ICON_ERROR) - try: - dlg2.ShowModal() - finally: - dlg2.Destroy() - else: - break # now save file - else: # exit without saving - return False - finally: - dlg1.Destroy() - - # File name has required extension - fType = _string.lower(fileName[-3:]) - if fType == "bmp": - tp= wx.BITMAP_TYPE_BMP # Save a Windows bitmap file. - elif fType == "xbm": - tp= wx.BITMAP_TYPE_XBM # Save an X bitmap file. - elif fType == "xpm": - tp= wx.BITMAP_TYPE_XPM # Save an XPM bitmap file. - elif fType == "jpg": - tp= wx.BITMAP_TYPE_JPEG # Save a JPG file. - else: - tp= wx.BITMAP_TYPE_PNG # Save a PNG file. - # Save Bitmap - res= self._Buffer.SaveFile(fileName, tp) - return res - - def PageSetup(self): - """Brings up the page setup dialog""" - data = self.pageSetupData - data.SetPrintData(self.print_data) - dlg = wx.PageSetupDialog(self.parent, data) - try: - if dlg.ShowModal() == wx.ID_OK: - data = dlg.GetPageSetupData() # returns wx.PageSetupDialogData - # updates page parameters from dialog - self.pageSetupData.SetMarginBottomRight(data.GetMarginBottomRight()) - self.pageSetupData.SetMarginTopLeft(data.GetMarginTopLeft()) - self.pageSetupData.SetPrintData(data.GetPrintData()) - self.print_data=data.GetPrintData() # updates print_data - finally: - dlg.Destroy() - - def Printout(self, paper=None): - """Print current plot.""" - if paper != None: - self.print_data.SetPaperId(paper) - pdd = wx.PrintDialogData() - pdd.SetPrintData(self.print_data) - printer = wx.Printer(pdd) - out = PlotPrintout(self) - print_ok = printer.Print(self.parent, out) - if print_ok: - self.print_data = printer.GetPrintDialogData().GetPrintData() - out.Destroy() - - def PrintPreview(self): - """Print-preview current plot.""" - printout = PlotPrintout(self) - printout2 = PlotPrintout(self) - self.preview = wx.PrintPreview(printout, printout2, self.print_data) - if not self.preview.Ok(): - wx.MessageDialog(self, "Print Preview failed.\n" \ - "Check that default printer is configured\n", \ - "Print error", wx.OK|wx.CENTRE).ShowModal() - self.preview.SetZoom(40) - # search up tree to find frame instance - 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((600,550)) - frame.Centre(wx.BOTH) - frame.Show(True) - - def SetFontSizeAxis(self, point= 10): - """Set the tick and axis label font size (default is 10 point)""" - self._fontSizeAxis= point - - def GetFontSizeAxis(self): - """Get current tick and axis label font size in points""" - return self._fontSizeAxis - - def SetFontSizeTitle(self, point= 15): - """Set Title font size (default is 15 point)""" - self._fontSizeTitle= point - - def GetFontSizeTitle(self): - """Get current Title font size in points""" - return self._fontSizeTitle - - def SetFontSizeLegend(self, point= 7): - """Set Legend font size (default is 7 point)""" - self._fontSizeLegend= point - - def GetFontSizeLegend(self): - """Get current Legend font size in points""" - return self._fontSizeLegend - - def SetEnableZoom(self, value): - """Set True to enable zooming.""" - if value not in [True,False]: - raise TypeError, "Value should be True or False" - self._zoomEnabled= value - - def GetEnableZoom(self): - """True if zooming enabled.""" - return self._zoomEnabled - - def SetEnableGrid(self, value): - """Set True to enable grid.""" - if value not in [True,False]: - raise TypeError, "Value should be True or False" - self._gridEnabled= value - self.Redraw() - - def GetEnableGrid(self): - """True if grid enabled.""" - return self._gridEnabled - - def SetEnableLegend(self, value): - """Set True to enable legend.""" - if value not in [True,False]: - raise TypeError, "Value should be True or False" - self._legendEnabled= value - self.Redraw() - - def GetEnableLegend(self): - """True if Legend enabled.""" - return self._legendEnabled - - def SetEnablePointLabel(self, value): - """Set True to enable pointLabel.""" - if value not in [True,False]: - raise TypeError, "Value should be True or False" - self._pointLabelEnabled= value - self.Redraw() #will erase existing pointLabel if present - self.last_PointLabel = None - - def GetEnablePointLabel(self): - """True if pointLabel enabled.""" - return self._pointLabelEnabled - - def SetPointLabelFunc(self, func): - """Sets the function with custom code for pointLabel drawing - ******** more info needed *************** - """ - self._pointLabelFunc= func - - def GetPointLabelFunc(self): - """Returns pointLabel Drawing Function""" - return self._pointLabelFunc - - def Reset(self): - """Unzoom the plot.""" - self.last_PointLabel = None #reset pointLabel - if self.last_draw is not None: - self.Draw(self.last_draw[0]) - - def ScrollRight(self, units): - """Move view right number of axis units.""" - self.last_PointLabel = None #reset pointLabel - if self.last_draw is not None: - graphics, xAxis, yAxis= self.last_draw - xAxis= (xAxis[0]+units, xAxis[1]+units) - self.Draw(graphics,xAxis,yAxis) - - def ScrollUp(self, units): - """Move view up number of axis units.""" - self.last_PointLabel = None #reset pointLabel - if self.last_draw is not None: - graphics, xAxis, yAxis= self.last_draw - yAxis= (yAxis[0]+units, yAxis[1]+units) - self.Draw(graphics,xAxis,yAxis) - - def GetXY(self,event): - """Takes a mouse event and returns the XY user axis values.""" - x,y= self.PositionScreenToUser(event.GetPosition()) - return x,y - - def PositionUserToScreen(self, pntXY): - """Converts User position to Screen Coordinates""" - userPos= _numpy.array(pntXY) - x,y= userPos * self._pointScale + self._pointShift - return x,y - - def PositionScreenToUser(self, pntXY): - """Converts Screen position to User Coordinates""" - screenPos= _numpy.array(pntXY) - x,y= (screenPos-self._pointShift)/self._pointScale - return x,y - - def SetXSpec(self, type= 'auto'): - """xSpec- defines x axis type. Can be 'none', 'min' or 'auto' - where: - 'none' - shows no axis or tick mark values - 'min' - shows min bounding box values - 'auto' - rounds axis range to sensible values - """ - self._xSpec= type - - def SetYSpec(self, type= 'auto'): - """ySpec- defines x axis type. Can be 'none', 'min' or 'auto' - where: - 'none' - shows no axis or tick mark values - 'min' - shows min bounding box values - 'auto' - rounds axis range to sensible values - """ - self._ySpec= type - - def GetXSpec(self): - """Returns current XSpec for axis""" - return self._xSpec - - def GetYSpec(self): - """Returns current YSpec for axis""" - return self._ySpec - - def GetXMaxRange(self): - """Returns (minX, maxX) x-axis range for displayed graph""" - graphics= self.last_draw[0] - p1, p2 = graphics.boundingBox() # min, max points of graphics - xAxis = self._axisInterval(self._xSpec, p1[0], p2[0]) # in user units - return xAxis - - def GetYMaxRange(self): - """Returns (minY, maxY) y-axis range for displayed graph""" - graphics= self.last_draw[0] - p1, p2 = graphics.boundingBox() # min, max points of graphics - yAxis = self._axisInterval(self._ySpec, p1[1], p2[1]) - return yAxis - - def GetXCurrentRange(self): - """Returns (minX, maxX) x-axis for currently displayed portion of graph""" - return self.last_draw[1] - - def GetYCurrentRange(self): - """Returns (minY, maxY) y-axis for currently displayed portion of graph""" - return self.last_draw[2] - - def SetXUseScopeTicks(self, v=False): - """Always 10 divisions, no labels""" - self._xUseScopeTicks = v - - def GetXUseScopeTicks(self): - return self._xUseScopeTicks - - def Draw(self, graphics, xAxis = None, yAxis = None, dc = None, step=None): - """Draw objects in graphics with specified x and y axis. - graphics- instance of PlotGraphics with list of PolyXXX objects - xAxis - tuple with (min, max) axis range to view - yAxis - same as xAxis - dc - drawing context - doesn't have to be specified. - If it's not, the offscreen buffer is used - """ - # check Axis is either tuple or none - if type(xAxis) not in [type(None),tuple]: - raise TypeError, "xAxis should be None or (minX,maxX)" - if type(yAxis) not in [type(None),tuple]: - raise TypeError, "yAxis should be None or (minY,maxY)" - - # check case for axis = (a,b) where a==b caused by improper zooms - if xAxis != None: - if xAxis[0] == xAxis[1]: - return - if yAxis != None: - if yAxis[0] == yAxis[1]: - return - - if dc == None: - # sets new dc and clears it - if self.use_persistence: - dc = wx.MemoryDC() - dc.SelectObject(self._Buffer) - dc.Clear() - else: - dc = wx.BufferedDC(wx.ClientDC(self), self._Buffer) - dc.Clear() - - dc.BeginDrawing() - # dc.Clear() - - - - # set font size for every thing but title and legend - dc.SetFont(self._getFont(self._fontSizeAxis)) - - # sizes axis to axis type, create lower left and upper right corners of plot - if xAxis == None or yAxis == None: - # One or both axis not specified in Draw - p1, p2 = graphics.boundingBox() # min, max points of graphics - if xAxis == None: - xAxis = self._axisInterval(self._xSpec, p1[0], p2[0]) # in user units - if yAxis == None: - yAxis = self._axisInterval(self._ySpec, p1[1], p2[1]) - # Adjust bounding box for axis spec - p1[0],p1[1] = xAxis[0], yAxis[0] # lower left corner user scale (xmin,ymin) - p2[0],p2[1] = xAxis[1], yAxis[1] # upper right corner user scale (xmax,ymax) - else: - # Both axis specified in Draw - p1= _numpy.array([xAxis[0], yAxis[0]]) # lower left corner user scale (xmin,ymin) - p2= _numpy.array([xAxis[1], yAxis[1]]) # upper right corner user scale (xmax,ymax) - - self.last_draw = (graphics, xAxis, yAxis) # saves most recient values - - if False: - ptx,pty,rectWidth,rectHeight= self._point2ClientCoord(p1, p2) - #dc.SetPen(wx.Pen(wx.BLACK)) - dc.SetBrush(wx.Brush( wx.BLACK, wx.SOLID ) ) #wx.SOLID wx.TRANSPARENT ) ) - #dc.SetLogicalFunction(wx.INVERT) #wx.XOR wx.INVERT - dc.DrawRectangle( ptx,pty, rectWidth,rectHeight) - #dc.SetBrush(wx.Brush( wx.WHITE, wx.SOLID ) ) - #dc.SetLogicalFunction(wx.COPY) - - # Get ticks and textExtents for axis if required - if self._xSpec is not 'none': - if self._xUseScopeTicks: - xticks = self._scope_ticks(xAxis[0], xAxis[1]) - else: - xticks = self._ticks(xAxis[0], xAxis[1]) - xTextExtent = dc.GetTextExtent(xticks[-1][1])# w h of x axis text last number on axis - else: - xticks = None - xTextExtent= (0,0) # No text for ticks - if self._ySpec is not 'none': - yticks = self._ticks(yAxis[0], yAxis[1], step) - yTextExtentBottom= dc.GetTextExtent(yticks[0][1]) - yTextExtentTop = dc.GetTextExtent(yticks[-1][1]) - yTextExtent= (max(yTextExtentBottom[0],yTextExtentTop[0]), - max(yTextExtentBottom[1],yTextExtentTop[1])) - else: - yticks = None - yTextExtent= (0,0) # No text for ticks - - # TextExtents for Title and Axis Labels - titleWH, xLabelWH, yLabelWH= self._titleLablesWH(dc, graphics) - - # TextExtents for Legend - legendBoxWH, legendSymExt, legendTextExt = self._legendWH(dc, graphics) - - # room around graph area - rhsW= max(xTextExtent[0], legendBoxWH[0]) # use larger of number width or legend width - lhsW= yTextExtent[0]+ yLabelWH[1] - bottomH= max(xTextExtent[1], yTextExtent[1]/2.)+ xLabelWH[1] - topH= yTextExtent[1]/2. + titleWH[1] - textSize_scale= _numpy.array([rhsW+lhsW,bottomH+topH]) # make plot area smaller by text size - textSize_shift= _numpy.array([lhsW, bottomH]) # shift plot area by this amount - - # drawing title and labels text - dc.SetFont(self._getFont(self._fontSizeTitle)) - titlePos= (self.plotbox_origin[0]+ lhsW + (self.plotbox_size[0]-lhsW-rhsW)/2.- titleWH[0]/2., - self.plotbox_origin[1]- self.plotbox_size[1]) - dc.DrawText(graphics.getTitle(),titlePos[0],titlePos[1]) - dc.SetFont(self._getFont(self._fontSizeAxis)) - xLabelPos= (self.plotbox_origin[0]+ lhsW + (self.plotbox_size[0]-lhsW-rhsW)/2.- xLabelWH[0]/2., - self.plotbox_origin[1]- xLabelWH[1]) - dc.DrawText(graphics.getXLabel(),xLabelPos[0],xLabelPos[1]) - yLabelPos= (self.plotbox_origin[0], - self.plotbox_origin[1]- bottomH- (self.plotbox_size[1]-bottomH-topH)/2.+ yLabelWH[0]/2.) - if graphics.getYLabel(): # bug fix for Linux - dc.DrawRotatedText(graphics.getYLabel(),yLabelPos[0],yLabelPos[1],90) - - # drawing legend makers and text - if self._legendEnabled: - self._drawLegend(dc,graphics,rhsW,topH,legendBoxWH, legendSymExt, legendTextExt) - - # allow for scaling and shifting plotted points - scale = (self.plotbox_size-textSize_scale) / (p2-p1)* _numpy.array((1,-1)) - shift = -p1*scale + self.plotbox_origin + textSize_shift * _numpy.array((1,-1)) - self._pointScale= scale # make available for mouse events - self._pointShift= shift - - #dc.SetLogicalFunction(wx.INVERT) #wx.XOR wx.INVERT - self._drawAxes(dc, p1, p2, scale, shift, xticks, yticks) - #dc.SetLogicalFunction(wx.COPY) - - graphics.scaleAndShift(scale, shift) - graphics.setPrinterScale(self.printerScale) # thicken up lines and markers if printing - - # set clipping area so drawing does not occur outside axis box - ptx,pty,rectWidth,rectHeight= self._point2ClientCoord(p1, p2) - dc.SetClippingRegion(ptx,pty,rectWidth,rectHeight) - # Draw the lines and markers - #start = _time.clock() - - graphics.draw(dc) - # print "entire graphics drawing took: %f second"%(_time.clock() - start) - # remove the clipping region - dc.DestroyClippingRegion() - dc.EndDrawing() - - - if self.use_persistence: - dc=None - self._Buffer.CopyToBuffer(self._Bufferarray) #, format=wx.BitmapBufferFormat_RGB, stride=-1) - ## do the IIR filter - alpha_int=int(float(self.alpha*256)) - if True: - _numpy.add(self._Bufferarray,0,self._Buffer3array) - _numpy.multiply(self._Buffer3array,alpha_int,self._Buffer3array) - _numpy.multiply(self._Buffer2array,(256-alpha_int),self._Buffer2array) - _numpy.add(self._Buffer3array,self._Buffer2array,self._Buffer2array) - _numpy.right_shift(self._Buffer2array,8,self._Buffer2array) - elif False: - self._Buffer2array=(self._Bufferarray.astype(_numpy.uint32) *alpha_int + self._Buffer2array*(256-alpha_int)).__rshift__(8) - elif False: - self._Buffer2array *=(256-alpha_int) - self._Buffer2array +=self._Bufferarray.astype(_numpy.uint32)*alpha_int - self._Buffer2array /=256 - - ##copy back to image buffer - self._Buffer2.CopyFromBuffer(self._Buffer2array.astype(_numpy.uint8)) #, format=wx.BitmapBufferFormat_RGB, stride=-1) - - #draw to the screen - #self.decim_counter=self.decim_counter+1 - if True: #self.decim_counter>self.decimation: - #self.decim_counter=0 - dc2 = wx.ClientDC( self ) - dc2.BeginDrawing() - dc2.DrawBitmap(self._Buffer2, 0, 0, False) - #dc2.DrawBitmap(self._Buffer, 0, 0, False) - dc2.EndDrawing() - - def Redraw(self, dc= None): - """Redraw the existing plot.""" - if self.last_draw is not None: - graphics, xAxis, yAxis= self.last_draw - self.Draw(graphics,xAxis,yAxis,dc) - - def Clear(self): - """Erase the window.""" - self.last_PointLabel = None #reset pointLabel - dc = wx.BufferedDC(wx.ClientDC(self), self._Buffer) - dc.Clear() - self.last_draw = None - - def Zoom(self, Center, Ratio): - """ Zoom on the plot - Centers on the X,Y coords given in Center - Zooms by the Ratio = (Xratio, Yratio) given - """ - self.last_PointLabel = None #reset maker - x,y = Center - if self.last_draw != None: - (graphics, xAxis, yAxis) = self.last_draw - w = (xAxis[1] - xAxis[0]) * Ratio[0] - h = (yAxis[1] - yAxis[0]) * Ratio[1] - xAxis = ( x - w/2, x + w/2 ) - yAxis = ( y - h/2, y + h/2 ) - self.Draw(graphics, xAxis, yAxis) - - def GetClosestPoints(self, pntXY, pointScaled= True): - """Returns list with - [curveNumber, legend, index of closest point, pointXY, scaledXY, distance] - list for each curve. - Returns [] if no curves are being plotted. - - x, y in user coords - if pointScaled == True based on screen coords - if pointScaled == False based on user coords - """ - if self.last_draw == None: - #no graph available - return [] - graphics, xAxis, yAxis= self.last_draw - l = [] - for curveNum,obj in enumerate(graphics): - #check there are points in the curve - if len(obj.points) == 0: - continue #go to next obj - #[curveNumber, legend, index of closest point, pointXY, scaledXY, distance] - cn = [curveNum]+ [obj.getLegend()]+ obj.getClosestPoint( pntXY, pointScaled) - l.append(cn) - return l - - def GetClosetPoint(self, pntXY, pointScaled= True): - """Returns list with - [curveNumber, legend, index of closest point, pointXY, scaledXY, distance] - list for only the closest curve. - Returns [] if no curves are being plotted. - - x, y in user coords - if pointScaled == True based on screen coords - if pointScaled == False based on user coords - """ - #closest points on screen based on screen scaling (pointScaled= True) - #list [curveNumber, index, pointXY, scaledXY, distance] for each curve - closestPts= self.GetClosestPoints(pntXY, pointScaled) - if closestPts == []: - return [] #no graph present - #find one with least distance - dists = [c[-1] for c in closestPts] - mdist = min(dists) #Min dist - i = dists.index(mdist) #index for min dist - return closestPts[i] #this is the closest point on closest curve - - def UpdatePointLabel(self, mDataDict): - """Updates the pointLabel point on screen with data contained in - mDataDict. - - mDataDict will be passed to your function set by - SetPointLabelFunc. It can contain anything you - want to display on the screen at the scaledXY point - you specify. - - This function can be called from parent window with onClick, - onMotion events etc. - """ - if self.last_PointLabel != None: - #compare pointXY - if mDataDict["pointXY"] != self.last_PointLabel["pointXY"]: - #closest changed - self._drawPointLabel(self.last_PointLabel) #erase old - self._drawPointLabel(mDataDict) #plot new - else: - #just plot new with no erase - self._drawPointLabel(mDataDict) #plot new - #save for next erase - self.last_PointLabel = mDataDict - - # event handlers ********************************** - def OnMotion(self, event): - if self._zoomEnabled and event.LeftIsDown(): - if self._hasDragged: - self._drawRubberBand(self._zoomCorner1, self._zoomCorner2) # remove old - else: - self._hasDragged= True - self._zoomCorner2[0], self._zoomCorner2[1] = self.GetXY(event) - self._drawRubberBand(self._zoomCorner1, self._zoomCorner2) # add new - - def OnMouseLeftDown(self,event): - self._zoomCorner1[0], self._zoomCorner1[1]= self.GetXY(event) - - def OnMouseLeftUp(self, event): - if self._zoomEnabled: - if self._hasDragged == True: - self._drawRubberBand(self._zoomCorner1, self._zoomCorner2) # remove old - self._zoomCorner2[0], self._zoomCorner2[1]= self.GetXY(event) - self._hasDragged = False # reset flag - minX, minY= _numpy.minimum( self._zoomCorner1, self._zoomCorner2) - maxX, maxY= _numpy.maximum( self._zoomCorner1, self._zoomCorner2) - self.last_PointLabel = None #reset pointLabel - if self.last_draw != None: - self.Draw(self.last_draw[0], xAxis = (minX,maxX), yAxis = (minY,maxY), dc = None) - #else: # A box has not been drawn, zoom in on a point - ## this interfered with the double click, so I've disables it. - # X,Y = self.GetXY(event) - # self.Zoom( (X,Y), (self._zoomInFactor,self._zoomInFactor) ) - - def OnMouseDoubleClick(self,event): - if self._zoomEnabled: - self.Reset() - - def OnMouseRightDown(self,event): - if self._zoomEnabled: - X,Y = self.GetXY(event) - self.Zoom( (X,Y), (self._zoomOutFactor, self._zoomOutFactor) ) - - def OnPaint(self, event): - # All that is needed here is to draw the buffer to screen - if self.last_PointLabel != None: - self._drawPointLabel(self.last_PointLabel) #erase old - self.last_PointLabel = None - - #paint current buffer to screen - dc = wx.BufferedPaintDC(self, self._Buffer) - - def OnSize(self,event): - # The Buffer init is done here, to make sure the buffer is always - # the same size as the Window - Size = self.GetClientSize() - - # Make new offscreen bitmap: this bitmap will always have the - # current drawing in it, so it can be used to save the image to - # a file, or whatever. - self._Buffer = wx.EmptyBitmap(Size[0],Size[1],24) - - - if True: #self.use_persistence: - #self._Bufferarray = _numpy.zeros((Size[0], Size[1],3), dtype=_numpy.uint8) - self._Bufferarray = _numpy.zeros((Size[0]* Size[1]*3), dtype=_numpy.uint8) - - # Make new second offscreen bitmap: this bitmap will always have the - # last drawing in it, so it can be used to do display time dependent processing - # like averaging (IIR) or show differences between updates - self._Buffer2 = wx.EmptyBitmap(Size[0],Size[1],24) - # now the extra buffers for the IIR processing - # note the different datatype uint32 - self._Buffer2array = _numpy.zeros((Size[0]* Size[1]*3), dtype=_numpy.uint32) #dtype=_numpy.float - self._Buffer3array = _numpy.zeros((Size[0]* Size[1]*3), dtype=_numpy.uint32) #dtype=_numpy.float - # optional you can set the ufunct buffer size to improve speed - #_numpy.setbufsize(16*((Size[0]* Size[1]*3)/16 +1)) - self._setSize() - - self.last_PointLabel = None #reset pointLabel - - if self.last_draw is None: - self.Clear() - else: - graphics, xSpec, ySpec = self.last_draw - self.Draw(graphics,xSpec,ySpec) - - def OnLeave(self, event): - """Used to erase pointLabel when mouse outside window""" - if self.last_PointLabel != None: - self._drawPointLabel(self.last_PointLabel) #erase old - self.last_PointLabel = None - - - # Private Methods ************************************************** - def _setSize(self, width=None, height=None): - """DC width and height.""" - if width == None: - (self.width,self.height) = self.GetClientSize() - else: - self.width, self.height= width,height - self.plotbox_size = 0.97*_numpy.array([self.width, self.height]) - xo = 0.5*(self.width-self.plotbox_size[0]) - yo = self.height-0.5*(self.height-self.plotbox_size[1]) - self.plotbox_origin = _numpy.array([xo, yo]) - - def _setPrinterScale(self, scale): - """Used to thicken lines and increase marker size for print out.""" - # line thickness on printer is very thin at 600 dot/in. Markers small - self.printerScale= scale - - def _printDraw(self, printDC): - """Used for printing.""" - if self.last_draw != None: - graphics, xSpec, ySpec= self.last_draw - self.Draw(graphics,xSpec,ySpec,printDC) - - def _drawPointLabel(self, mDataDict): - """Draws and erases pointLabels""" - width = self._Buffer.GetWidth() - height = self._Buffer.GetHeight() - tmp_Buffer = wx.EmptyBitmap(width,height) - dcs = wx.MemoryDC() - dcs.SelectObject(tmp_Buffer) - dcs.Clear() - dcs.BeginDrawing() - self._pointLabelFunc(dcs,mDataDict) #custom user pointLabel function - dcs.EndDrawing() - - dc = wx.ClientDC( self ) - #this will erase if called twice - dc.Blit(0, 0, width, height, dcs, 0, 0, wx.EQUIV) #(NOT src) XOR dst - - - def _drawLegend(self,dc,graphics,rhsW,topH,legendBoxWH, legendSymExt, legendTextExt): - """Draws legend symbols and text""" - # top right hand corner of graph box is ref corner - trhc= self.plotbox_origin+ (self.plotbox_size-[rhsW,topH])*[1,-1] - legendLHS= .091* legendBoxWH[0] # border space between legend sym and graph box - lineHeight= max(legendSymExt[1], legendTextExt[1]) * 1.1 #1.1 used as space between lines - dc.SetFont(self._getFont(self._fontSizeLegend)) - for i in range(len(graphics)): - o = graphics[i] - s= i*lineHeight - if isinstance(o,PolyMarker): - # draw marker with legend - pnt= (trhc[0]+legendLHS+legendSymExt[0]/2., trhc[1]+s+lineHeight/2.) - o.draw(dc, self.printerScale, coord= _numpy.array([pnt])) - elif isinstance(o,PolyLine): - # draw line with legend - pnt1= (trhc[0]+legendLHS, trhc[1]+s+lineHeight/2.) - pnt2= (trhc[0]+legendLHS+legendSymExt[0], trhc[1]+s+lineHeight/2.) - o.draw(dc, self.printerScale, coord= _numpy.array([pnt1,pnt2])) - else: - raise TypeError, "object is neither PolyMarker or PolyLine instance" - # draw legend txt - pnt= (trhc[0]+legendLHS+legendSymExt[0], trhc[1]+s+lineHeight/2.-legendTextExt[1]/2) - dc.DrawText(o.getLegend(),pnt[0],pnt[1]) - dc.SetFont(self._getFont(self._fontSizeAxis)) # reset - - def _titleLablesWH(self, dc, graphics): - """Draws Title and labels and returns width and height for each""" - # TextExtents for Title and Axis Labels - dc.SetFont(self._getFont(self._fontSizeTitle)) - title= graphics.getTitle() - titleWH= dc.GetTextExtent(title) - dc.SetFont(self._getFont(self._fontSizeAxis)) - xLabel, yLabel= graphics.getXLabel(),graphics.getYLabel() - xLabelWH= dc.GetTextExtent(xLabel) - yLabelWH= dc.GetTextExtent(yLabel) - return titleWH, xLabelWH, yLabelWH - - def _legendWH(self, dc, graphics): - """Returns the size in screen units for legend box""" - if self._legendEnabled != True: - legendBoxWH= symExt= txtExt= (0,0) - else: - # find max symbol size - symExt= graphics.getSymExtent(self.printerScale) - # find max legend text extent - dc.SetFont(self._getFont(self._fontSizeLegend)) - txtList= graphics.getLegendNames() - txtExt= dc.GetTextExtent(txtList[0]) - for txt in graphics.getLegendNames()[1:]: - txtExt= _numpy.maximum(txtExt,dc.GetTextExtent(txt)) - maxW= symExt[0]+txtExt[0] - maxH= max(symExt[1],txtExt[1]) - # padding .1 for lhs of legend box and space between lines - maxW= maxW* 1.1 - maxH= maxH* 1.1 * len(txtList) - dc.SetFont(self._getFont(self._fontSizeAxis)) - legendBoxWH= (maxW,maxH) - return (legendBoxWH, symExt, txtExt) - - def _drawRubberBand(self, corner1, corner2): - """Draws/erases rect box from corner1 to corner2""" - ptx,pty,rectWidth,rectHeight= self._point2ClientCoord(corner1, corner2) - # draw rectangle - dc = wx.ClientDC( self ) - dc.BeginDrawing() - dc.SetPen(wx.Pen(wx.BLACK)) - dc.SetBrush(wx.Brush( wx.WHITE, wx.TRANSPARENT ) ) - dc.SetLogicalFunction(wx.INVERT) - dc.DrawRectangle( ptx,pty, rectWidth,rectHeight) - dc.SetLogicalFunction(wx.COPY) - dc.EndDrawing() - - def _getFont(self,size): - """Take font size, adjusts if printing and returns wx.Font""" - s = size*self.printerScale - of = self.GetFont() - # Linux speed up to get font from cache rather than X font server - key = (int(s), of.GetFamily (), of.GetStyle (), of.GetWeight ()) - font = self._fontCache.get (key, None) - if font: - return font # yeah! cache hit - else: - font = wx.Font(int(s), of.GetFamily(), of.GetStyle(), of.GetWeight()) - self._fontCache[key] = font - return font - - - def _point2ClientCoord(self, corner1, corner2): - """Converts user point coords to client screen int coords x,y,width,height""" - c1= _numpy.array(corner1) - c2= _numpy.array(corner2) - # convert to screen coords - pt1= c1*self._pointScale+self._pointShift - pt2= c2*self._pointScale+self._pointShift - # make height and width positive - pul= _numpy.minimum(pt1,pt2) # Upper left corner - plr= _numpy.maximum(pt1,pt2) # Lower right corner - rectWidth, rectHeight= plr-pul - ptx,pty= pul - return ptx, pty, rectWidth, rectHeight - - def _axisInterval(self, spec, lower, upper): - """Returns sensible axis range for given spec""" - if spec == 'none' or spec == 'min': - if lower == upper: - return lower-0.5, upper+0.5 - else: - return lower, upper - elif spec == 'auto': - range = upper-lower - # if range == 0.: - if abs(range) < 1e-36: - return lower-0.5, upper+0.5 - log = _numpy.log10(range) - power = _numpy.floor(log) - fraction = log-power - if fraction <= 0.05: - power = power-1 - grid = 10.**power - lower = lower - lower % grid - mod = upper % grid - if mod != 0: - upper = upper - mod + grid - return lower, upper - elif type(spec) == type(()): - lower, upper = spec - if lower <= upper: - return lower, upper - else: - return upper, lower - else: - raise ValueError, str(spec) + ': illegal axis specification' - - def _drawAxes(self, dc, p1, p2, scale, shift, xticks, yticks): - - penWidth= self.printerScale # increases thickness for printing only - dc.SetPen(wx.Pen(wx.NamedColour('BLACK'), penWidth)) - - # set length of tick marks--long ones make grid - if self._gridEnabled: - x,y,width,height= self._point2ClientCoord(p1,p2) - yTickLength= width/2.0 +1 - xTickLength= height/2.0 +1 - else: - yTickLength= 3 * self.printerScale # lengthens lines for printing - xTickLength= 3 * self.printerScale - - if self._xSpec is not 'none': - lower, upper = p1[0],p2[0] - text = 1 - for y, d in [(p1[1], -xTickLength), (p2[1], xTickLength)]: # miny, maxy and tick lengths - a1 = scale*_numpy.array([lower, y])+shift - a2 = scale*_numpy.array([upper, y])+shift - dc.DrawLine(a1[0],a1[1],a2[0],a2[1]) # draws upper and lower axis line - for x, label in xticks: - pt = scale*_numpy.array([x, y])+shift - dc.DrawLine(pt[0],pt[1],pt[0],pt[1] + d) # draws tick mark d units - if text: - dc.DrawText(label,pt[0],pt[1]) - text = 0 # axis values not drawn on top side - - if self._ySpec is not 'none': - lower, upper = p1[1],p2[1] - text = 1 - h = dc.GetCharHeight() - for x, d in [(p1[0], -yTickLength), (p2[0], yTickLength)]: - a1 = scale*_numpy.array([x, lower])+shift - a2 = scale*_numpy.array([x, upper])+shift - dc.DrawLine(a1[0],a1[1],a2[0],a2[1]) - for y, label in yticks: - pt = scale*_numpy.array([x, y])+shift - dc.DrawLine(pt[0],pt[1],pt[0]-d,pt[1]) - if text: - dc.DrawText(label,pt[0]-dc.GetTextExtent(label)[0], - pt[1]-0.5*h) - text = 0 # axis values not drawn on right side - - def _ticks(self, lower, upper, step=None): - ideal = (upper-lower)/7. - log = _numpy.log10(ideal) - power = _numpy.floor(log) - fraction = log-power - factor = 1. - error = fraction - for f, lf in self._multiples: - e = _numpy.fabs(fraction-lf) - if e < error: - error = e - factor = f - grid = factor * 10.**power - if power > 4 or power < -4: - format = '%+7.1e' - elif power >= 0: - digits = max(1, int(power)) - format = '%' + `digits`+'.0f' - else: - digits = -int(power) - format = '%'+`digits+2`+'.'+`digits`+'f' - #force grid when step is not None - if step is not None: grid = step - ticks = [] - t = -grid*_numpy.floor(-lower/grid) - while t <= upper: - if t == -0: t = 0 #remove neg zero condition - ticks.append( (t, format % (t,)) ) - t = t + grid - return ticks - - def _scope_ticks (self, lower, upper): - '''Always 10 divisions, no labels''' - grid = (upper - lower) / 10.0 - ticks = [] - t = lower - while t <= upper: - ticks.append( (t, "")) - t = t + grid - return ticks - - _multiples = [(2., _numpy.log10(2.)), (5., _numpy.log10(5.))] - - -#------------------------------------------------------------------------------- -# Used to layout the printer page - -class PlotPrintout(wx.Printout): - """Controls how the plot is made in printing and previewing""" - # Do not change method names in this class, - # we have to override wx.Printout methods here! - def __init__(self, graph): - """graph is instance of plotCanvas to be printed or previewed""" - wx.Printout.__init__(self) - self.graph = graph - - def HasPage(self, page): - if page == 1: - return True - else: - return False - - def GetPageInfo(self): - return (1, 1, 1, 1) # disable page numbers - - def OnPrintPage(self, page): - dc = self.GetDC() # allows using floats for certain functions -## print "PPI Printer",self.GetPPIPrinter() -## print "PPI Screen", self.GetPPIScreen() -## print "DC GetSize", dc.GetSize() -## print "GetPageSizePixels", self.GetPageSizePixels() - # Note PPIScreen does not give the correct number - # Calulate everything for printer and then scale for preview - PPIPrinter= self.GetPPIPrinter() # printer dots/inch (w,h) - #PPIScreen= self.GetPPIScreen() # screen dots/inch (w,h) - dcSize= dc.GetSize() # DC size - pageSize= self.GetPageSizePixels() # page size in terms of pixcels - clientDcSize= self.graph.GetClientSize() - - # find what the margins are (mm) - margLeftSize,margTopSize= self.graph.pageSetupData.GetMarginTopLeft() - margRightSize, margBottomSize= self.graph.pageSetupData.GetMarginBottomRight() - - # calculate offset and scale for dc - pixLeft= margLeftSize*PPIPrinter[0]/25.4 # mm*(dots/in)/(mm/in) - pixRight= margRightSize*PPIPrinter[0]/25.4 - pixTop= margTopSize*PPIPrinter[1]/25.4 - pixBottom= margBottomSize*PPIPrinter[1]/25.4 - - plotAreaW= pageSize[0]-(pixLeft+pixRight) - plotAreaH= pageSize[1]-(pixTop+pixBottom) - - # ratio offset and scale to screen size if preview - if self.IsPreview(): - ratioW= float(dcSize[0])/pageSize[0] - ratioH= float(dcSize[1])/pageSize[1] - pixLeft *= ratioW - pixTop *= ratioH - plotAreaW *= ratioW - plotAreaH *= ratioH - - # rescale plot to page or preview plot area - self.graph._setSize(plotAreaW,plotAreaH) - - # Set offset and scale - dc.SetDeviceOrigin(pixLeft,pixTop) - - # Thicken up pens and increase marker size for printing - ratioW= float(plotAreaW)/clientDcSize[0] - ratioH= float(plotAreaH)/clientDcSize[1] - aveScale= (ratioW+ratioH)/2 - self.graph._setPrinterScale(aveScale) # tickens up pens for printing - - self.graph._printDraw(dc) - # rescale back to original - self.graph._setSize() - self.graph._setPrinterScale(1) - self.graph.Redraw() #to get point label scale and shift correct - - return True - - - - -#--------------------------------------------------------------------------- -# if running standalone... -# -# ...a sample implementation using the above -# - -def _draw1Objects(): - # 100 points sin function, plotted as green circles - data1 = 2.*_numpy.pi*_numpy.arange(200)/200. - data1.shape = (100, 2) - data1[:,1] = _numpy.sin(data1[:,0]) - markers1 = PolyMarker(data1, legend='Green Markers', colour='green', marker='circle',size=1) - - # 50 points cos function, plotted as red line - data1 = 2.*_numpy.pi*_numpy.arange(100)/100. - data1.shape = (50,2) - data1[:,1] = _numpy.cos(data1[:,0]) - lines = PolyLine(data1, legend= 'Red Line', colour='red') - - # A few more points... - pi = _numpy.pi - markers2 = PolyMarker([(0., 0.), (pi/4., 1.), (pi/2, 0.), - (3.*pi/4., -1)], legend='Cross Legend', colour='blue', - marker='cross') - - return PlotGraphics([markers1, lines, markers2],"Graph Title", "X Axis", "Y Axis") - -def _draw2Objects(): - # 100 points sin function, plotted as green dots - data1 = 2.*_numpy.pi*_numpy.arange(200)/200. - data1.shape = (100, 2) - data1[:,1] = _numpy.sin(data1[:,0]) - line1 = PolyLine(data1, legend='Green Line', colour='green', width=6, style=wx.DOT) - - # 50 points cos function, plotted as red dot-dash - data1 = 2.*_numpy.pi*_numpy.arange(100)/100. - data1.shape = (50,2) - data1[:,1] = _numpy.cos(data1[:,0]) - line2 = PolyLine(data1, legend='Red Line', colour='red', width=3, style= wx.DOT_DASH) - - # A few more points... - pi = _numpy.pi - markers1 = PolyMarker([(0., 0.), (pi/4., 1.), (pi/2, 0.), - (3.*pi/4., -1)], legend='Cross Hatch Square', colour='blue', width= 3, size= 6, - fillcolour= 'red', fillstyle= wx.CROSSDIAG_HATCH, - marker='square') - - return PlotGraphics([markers1, line1, line2], "Big Markers with Different Line Styles") - -def _draw3Objects(): - markerList= ['circle', 'dot', 'square', 'triangle', 'triangle_down', - 'cross', 'plus', 'circle'] - m=[] - for i in range(len(markerList)): - m.append(PolyMarker([(2*i+.5,i+.5)], legend=markerList[i], colour='blue', - marker=markerList[i])) - return PlotGraphics(m, "Selection of Markers", "Minimal Axis", "No Axis") - -def _draw4Objects(): - # 25,000 point line - data1 = _numpy.arange(5e5,1e6,10) - data1.shape = (25000, 2) - line1 = PolyLine(data1, legend='Wide Line', colour='green', width=5) - - # A few more points... - markers2 = PolyMarker(data1, legend='Square', colour='blue', - marker='square') - return PlotGraphics([line1, markers2], "25,000 Points", "Value X", "") - -def _draw5Objects(): - # Empty graph with axis defined but no points/lines - points=[] - line1 = PolyLine(points, legend='Wide Line', colour='green', width=5) - return PlotGraphics([line1], "Empty Plot With Just Axes", "Value X", "Value Y") - -def _draw6Objects(): - # Bar graph - points1=[(1,0), (1,10)] - line1 = PolyLine(points1, colour='green', legend='Feb.', width=10) - points1g=[(2,0), (2,4)] - line1g = PolyLine(points1g, colour='red', legend='Mar.', width=10) - points1b=[(3,0), (3,6)] - line1b = PolyLine(points1b, colour='blue', legend='Apr.', width=10) - - points2=[(4,0), (4,12)] - line2 = PolyLine(points2, colour='Yellow', legend='May', width=10) - points2g=[(5,0), (5,8)] - line2g = PolyLine(points2g, colour='orange', legend='June', width=10) - points2b=[(6,0), (6,4)] - line2b = PolyLine(points2b, colour='brown', legend='July', width=10) - - return PlotGraphics([line1, line1g, line1b, line2, line2g, line2b], - "Bar Graph - (Turn on Grid, Legend)", "Months", "Number of Students") - - -class TestFrame(wx.Frame): - def __init__(self, parent, id, title): - wx.Frame.__init__(self, parent, id, title, - wx.DefaultPosition, (600, 400)) - - # Now Create the menu bar and items - self.mainmenu = wx.MenuBar() - - menu = wx.Menu() - menu.Append(200, 'Page Setup...', 'Setup the printer page') - self.Bind(wx.EVT_MENU, self.OnFilePageSetup, id=200) - - menu.Append(201, 'Print Preview...', 'Show the current plot on page') - self.Bind(wx.EVT_MENU, self.OnFilePrintPreview, id=201) - - menu.Append(202, 'Print...', 'Print the current plot') - self.Bind(wx.EVT_MENU, self.OnFilePrint, id=202) - - menu.Append(203, 'Save Plot...', 'Save current plot') - self.Bind(wx.EVT_MENU, self.OnSaveFile, id=203) - - menu.Append(205, 'E&xit', 'Enough of this already!') - self.Bind(wx.EVT_MENU, self.OnFileExit, id=205) - self.mainmenu.Append(menu, '&File') - - menu = wx.Menu() - menu.Append(206, 'Draw1', 'Draw plots1') - self.Bind(wx.EVT_MENU,self.OnPlotDraw1, id=206) - menu.Append(207, 'Draw2', 'Draw plots2') - self.Bind(wx.EVT_MENU,self.OnPlotDraw2, id=207) - menu.Append(208, 'Draw3', 'Draw plots3') - self.Bind(wx.EVT_MENU,self.OnPlotDraw3, id=208) - menu.Append(209, 'Draw4', 'Draw plots4') - self.Bind(wx.EVT_MENU,self.OnPlotDraw4, id=209) - menu.Append(210, 'Draw5', 'Draw plots5') - self.Bind(wx.EVT_MENU,self.OnPlotDraw5, id=210) - menu.Append(260, 'Draw6', 'Draw plots6') - self.Bind(wx.EVT_MENU,self.OnPlotDraw6, id=260) - - - menu.Append(211, '&Redraw', 'Redraw plots') - self.Bind(wx.EVT_MENU,self.OnPlotRedraw, id=211) - menu.Append(212, '&Clear', 'Clear canvas') - self.Bind(wx.EVT_MENU,self.OnPlotClear, id=212) - menu.Append(213, '&Scale', 'Scale canvas') - self.Bind(wx.EVT_MENU,self.OnPlotScale, id=213) - menu.Append(214, 'Enable &Zoom', 'Enable Mouse Zoom', kind=wx.ITEM_CHECK) - self.Bind(wx.EVT_MENU,self.OnEnableZoom, id=214) - menu.Append(215, 'Enable &Grid', 'Turn on Grid', kind=wx.ITEM_CHECK) - self.Bind(wx.EVT_MENU,self.OnEnableGrid, id=215) - menu.Append(220, 'Enable &Legend', 'Turn on Legend', kind=wx.ITEM_CHECK) - self.Bind(wx.EVT_MENU,self.OnEnableLegend, id=220) - menu.Append(222, 'Enable &Point Label', 'Show Closest Point', kind=wx.ITEM_CHECK) - self.Bind(wx.EVT_MENU,self.OnEnablePointLabel, id=222) - - menu.Append(225, 'Scroll Up 1', 'Move View Up 1 Unit') - self.Bind(wx.EVT_MENU,self.OnScrUp, id=225) - menu.Append(230, 'Scroll Rt 2', 'Move View Right 2 Units') - self.Bind(wx.EVT_MENU,self.OnScrRt, id=230) - menu.Append(235, '&Plot Reset', 'Reset to original plot') - self.Bind(wx.EVT_MENU,self.OnReset, id=235) - - self.mainmenu.Append(menu, '&Plot') - - menu = wx.Menu() - menu.Append(300, '&About', 'About this thing...') - self.Bind(wx.EVT_MENU, self.OnHelpAbout, id=300) - self.mainmenu.Append(menu, '&Help') - - self.SetMenuBar(self.mainmenu) - - # A status bar to tell people what's happening - self.CreateStatusBar(1) - - self.client = PlotCanvas(self) - #define the function for drawing pointLabels - self.client.SetPointLabelFunc(self.DrawPointLabel) - # Create mouse event for showing cursor coords in status bar - self.client.Bind(wx.EVT_LEFT_DOWN, self.OnMouseLeftDown) - # Show closest point when enabled - self.client.Bind(wx.EVT_MOTION, self.OnMotion) - - self.Show(True) - - def DrawPointLabel(self, dc, mDataDict): - """This is the fuction that defines how the pointLabels are plotted - dc - DC that will be passed - mDataDict - Dictionary of data that you want to use for the pointLabel - - As an example I have decided I want a box at the curve point - with some text information about the curve plotted below. - Any wxDC method can be used. - """ - # ---------- - dc.SetPen(wx.Pen(wx.BLACK)) - dc.SetBrush(wx.Brush( wx.BLACK, wx.SOLID ) ) - - sx, sy = mDataDict["scaledXY"] #scaled x,y of closest point - dc.DrawRectangle( sx-5,sy-5, 10, 10) #10by10 square centered on point - px,py = mDataDict["pointXY"] - cNum = mDataDict["curveNum"] - pntIn = mDataDict["pIndex"] - legend = mDataDict["legend"] - #make a string to display - s = "Crv# %i, '%s', Pt. (%.2f,%.2f), PtInd %i" %(cNum, legend, px, py, pntIn) - dc.DrawText(s, sx , sy+1) - # ----------- - - def OnMouseLeftDown(self,event): - s= "Left Mouse Down at Point: (%.4f, %.4f)" % self.client.GetXY(event) - self.SetStatusText(s) - event.Skip() #allows plotCanvas OnMouseLeftDown to be called - - def OnMotion(self, event): - #show closest point (when enbled) - if self.client.GetEnablePointLabel() == True: - #make up dict with info for the pointLabel - #I've decided to mark the closest point on the closest curve - dlst= self.client.GetClosetPoint( self.client.GetXY(event), pointScaled= True) - if dlst != []: #returns [] if none - curveNum, legend, pIndex, pointXY, scaledXY, distance = dlst - #make up dictionary to pass to my user function (see DrawPointLabel) - mDataDict= {"curveNum":curveNum, "legend":legend, "pIndex":pIndex,\ - "pointXY":pointXY, "scaledXY":scaledXY} - #pass dict to update the pointLabel - self.client.UpdatePointLabel(mDataDict) - event.Skip() #go to next handler - - def OnFilePageSetup(self, event): - self.client.PageSetup() - - def OnFilePrintPreview(self, event): - self.client.PrintPreview() - - def OnFilePrint(self, event): - self.client.Printout() - - def OnSaveFile(self, event): - self.client.SaveFile() - - def OnFileExit(self, event): - self.Close() - - def OnPlotDraw1(self, event): - self.resetDefaults() - self.client.Draw(_draw1Objects()) - - def OnPlotDraw2(self, event): - self.resetDefaults() - self.client.Draw(_draw2Objects()) - - def OnPlotDraw3(self, event): - self.resetDefaults() - self.client.SetFont(wx.Font(10,wx.SCRIPT,wx.NORMAL,wx.NORMAL)) - self.client.SetFontSizeAxis(20) - self.client.SetFontSizeLegend(12) - self.client.SetXSpec('min') - self.client.SetYSpec('none') - self.client.Draw(_draw3Objects()) - - def OnPlotDraw4(self, event): - self.resetDefaults() - drawObj= _draw4Objects() - self.client.Draw(drawObj) -## # profile -## start = _time.clock() -## for x in range(10): -## self.client.Draw(drawObj) -## print "10 plots of Draw4 took: %f sec."%(_time.clock() - start) -## # profile end - - def OnPlotDraw5(self, event): - # Empty plot with just axes - self.resetDefaults() - drawObj= _draw5Objects() - # make the axis X= (0,5), Y=(0,10) - # (default with None is X= (-1,1), Y= (-1,1)) - self.client.Draw(drawObj, xAxis= (0,5), yAxis= (0,10)) - - def OnPlotDraw6(self, event): - #Bar Graph Example - self.resetDefaults() - #self.client.SetEnableLegend(True) #turn on Legend - #self.client.SetEnableGrid(True) #turn on Grid - self.client.SetXSpec('none') #turns off x-axis scale - self.client.SetYSpec('auto') - self.client.Draw(_draw6Objects(), xAxis= (0,7)) - - def OnPlotRedraw(self,event): - self.client.Redraw() - - def OnPlotClear(self,event): - self.client.Clear() - - def OnPlotScale(self, event): - if self.client.last_draw != None: - graphics, xAxis, yAxis= self.client.last_draw - self.client.Draw(graphics,(1,3.05),(0,1)) - - def OnEnableZoom(self, event): - self.client.SetEnableZoom(event.IsChecked()) - - def OnEnableGrid(self, event): - self.client.SetEnableGrid(event.IsChecked()) - - def OnEnableLegend(self, event): - self.client.SetEnableLegend(event.IsChecked()) - - def OnEnablePointLabel(self, event): - self.client.SetEnablePointLabel(event.IsChecked()) - - def OnScrUp(self, event): - self.client.ScrollUp(1) - - def OnScrRt(self,event): - self.client.ScrollRight(2) - - def OnReset(self,event): - self.client.Reset() - - def OnHelpAbout(self, event): - from wx.lib.dialogs import ScrolledMessageDialog - about = ScrolledMessageDialog(self, __doc__, "About...") - about.ShowModal() - - def resetDefaults(self): - """Just to reset the fonts back to the PlotCanvas defaults""" - self.client.SetFont(wx.Font(10,wx.SWISS,wx.NORMAL,wx.NORMAL)) - self.client.SetFontSizeAxis(10) - self.client.SetFontSizeLegend(7) - self.client.SetXSpec('auto') - self.client.SetYSpec('auto') - - -def __test(): - - class MyApp(wx.App): - def OnInit(self): - wx.InitAllImageHandlers() - frame = TestFrame(None, -1, "PlotCanvas") - #frame.Show(True) - self.SetTopWindow(frame) - return True - - - app = MyApp(0) - app.MainLoop() - -if __name__ == '__main__': - __test() |