diff --git a/pyqtgraph/graphicsItems/AxisItem.py b/pyqtgraph/graphicsItems/AxisItem.py index 19c5e1f0..3e358870 100644 --- a/pyqtgraph/graphicsItems/AxisItem.py +++ b/pyqtgraph/graphicsItems/AxisItem.py @@ -14,10 +14,10 @@ class AxisItem(GraphicsWidget): GraphicsItem showing a single plot axis with ticks, values, and label. Can be configured to fit on any side of a plot, and can automatically synchronize its displayed scale with ViewBox items. Ticks can be extended to draw a grid. - If maxTickLength is negative, ticks point into the plot. + If maxTickLength is negative, ticks point into the plot. """ - - def __init__(self, orientation, pen=None, linkView=None, parent=None, maxTickLength=-5, showValues=True): + + def __init__(self, orientation, pen=None, linkView=None, parent=None, maxTickLength=-5, showValues=True, text='', units='', unitPrefix='', **args): """ ============== =============================================================== **Arguments:** @@ -26,11 +26,19 @@ class AxisItem(GraphicsWidget): into the plot, positive values draw outward. linkView (ViewBox) causes the range of values displayed in the axis to be linked to the visible range of a ViewBox. - showValues (bool) Whether to display values adjacent to ticks + showValues (bool) Whether to display values adjacent to ticks pen (QPen) Pen used when drawing ticks. + text The text (excluding units) to display on the label for this + axis. + units The units for this axis. Units should generally be given + without any scaling prefix (eg, 'V' instead of 'mV'). The + scaling prefix will be automatically prepended based on the + range of data displayed. + **args All extra keyword arguments become CSS style options for + the tag which will surround the axis label and units. ============== =============================================================== """ - + GraphicsWidget.__init__(self, parent) self.label = QtGui.QGraphicsTextItem(self) self.picture = None @@ -39,15 +47,15 @@ class AxisItem(GraphicsWidget): raise Exception("Orientation argument must be one of 'left', 'right', 'top', or 'bottom'.") if orientation in ['left', 'right']: self.label.rotate(-90) - + self.style = { - 'tickTextOffset': [5, 2], ## (horizontal, vertical) spacing between text and axis + 'tickTextOffset': [5, 2], ## (horizontal, vertical) spacing between text and axis 'tickTextWidth': 30, ## space reserved for tick text - 'tickTextHeight': 18, + 'tickTextHeight': 18, 'autoExpandTextSpace': True, ## automatically expand text space if needed 'tickFont': None, - 'stopAxisAtTick': (False, False), ## whether axis is drawn to edge of box or to last tick - 'textFillLimits': [ ## how much of the axis to fill up with tick text, maximally. + 'stopAxisAtTick': (False, False), ## whether axis is drawn to edge of box or to last tick + 'textFillLimits': [ ## how much of the axis to fill up with tick text, maximally. (0, 0.8), ## never fill more than 80% of the axis (2, 0.6), ## If we already have 2 ticks with text, fill no more than 60% of the axis (4, 0.4), ## If we already have 4 ticks with text, fill no more than 40% of the axis @@ -58,93 +66,93 @@ class AxisItem(GraphicsWidget): 'maxTickLevel': 2, 'maxTextLevel': 2, } - - self.textWidth = 30 ## Keeps track of maximum width / height of tick text + + self.textWidth = 30 ## Keeps track of maximum width / height of tick text self.textHeight = 18 - + # If the user specifies a width / height, remember that setting # indefinitely. self.fixedWidth = None self.fixedHeight = None - - self.labelText = '' - self.labelUnits = '' - self.labelUnitPrefix='' - self.labelStyle = {} + + self.labelText = text + self.labelUnits = units + self.labelUnitPrefix = unitPrefix + self.labelStyle = args self.logMode = False self.tickFont = None - + self._tickLevels = None ## used to override the automatic ticking system with explicit ticks self._tickSpacing = None # used to override default tickSpacing method self.scale = 1.0 self.autoSIPrefix = True self.autoSIPrefixScale = 1.0 - + + self.showLabel(False) + self.setRange(0, 1) - + if pen is None: self.setPen() else: self.setPen(pen) - + self._linkedView = None if linkView is not None: self.linkToView(linkView) - - self.showLabel(False) - + self.grid = False #self.setCacheMode(self.DeviceCoordinateCache) def setStyle(self, **kwds): """ Set various style options. - + =================== ======================================================= Keyword Arguments: - tickLength (int) The maximum length of ticks in pixels. - Positive values point toward the text; negative + tickLength (int) The maximum length of ticks in pixels. + Positive values point toward the text; negative values point away. tickTextOffset (int) reserved spacing between text and axis in px tickTextWidth (int) Horizontal space reserved for tick text in px tickTextHeight (int) Vertical space reserved for tick text in px autoExpandTextSpace (bool) Automatically expand text space if the tick strings become too long. - tickFont (QFont or None) Determines the font used for tick + tickFont (QFont or None) Determines the font used for tick values. Use None for the default font. - stopAxisAtTick (tuple: (bool min, bool max)) If True, the axis - line is drawn only as far as the last tick. - Otherwise, the line is drawn to the edge of the + stopAxisAtTick (tuple: (bool min, bool max)) If True, the axis + line is drawn only as far as the last tick. + Otherwise, the line is drawn to the edge of the AxisItem boundary. textFillLimits (list of (tick #, % fill) tuples). This structure - determines how the AxisItem decides how many ticks + determines how the AxisItem decides how many ticks should have text appear next to them. Each tuple in the list specifies what fraction of the axis length may be occupied by text, given the number of ticks that already have text displayed. For example:: - + [(0, 0.8), # Never fill more than 80% of the axis - (2, 0.6), # If we already have 2 ticks with text, + (2, 0.6), # If we already have 2 ticks with text, # fill no more than 60% of the axis - (4, 0.4), # If we already have 4 ticks with text, + (4, 0.4), # If we already have 4 ticks with text, # fill no more than 40% of the axis - (6, 0.2)] # If we already have 6 ticks with text, + (6, 0.2)] # If we already have 6 ticks with text, # fill no more than 20% of the axis - + showValues (bool) indicates whether text is displayed adjacent to ticks. =================== ======================================================= - + Added in version 0.9.9 """ for kwd,value in kwds.items(): if kwd not in self.style: raise NameError("%s is not a valid style argument." % kwd) - + if kwd in ('tickLength', 'tickTextOffset', 'tickTextWidth', 'tickTextHeight'): if not isinstance(value, int): raise ValueError("Argument '%s' must be int" % kwd) - + if kwd == 'tickTextOffset': if self.orientation in ('left', 'right'): self.style['tickTextOffset'][0] = value @@ -158,19 +166,19 @@ class AxisItem(GraphicsWidget): self.style[kwd] = value else: self.style[kwd] = value - + self.picture = None self._adjustSize() self.update() - + def close(self): self.scene().removeItem(self.label) self.label = None self.scene().removeItem(self) - + def setGrid(self, grid): """Set the alpha value (0-255) for the grid, or False to disable. - + When grid lines are enabled, the axis tick lines are extended to cover the extent of the linked ViewBox, if any. """ @@ -178,28 +186,28 @@ class AxisItem(GraphicsWidget): self.picture = None self.prepareGeometryChange() self.update() - + def setLogMode(self, log): """ If *log* is True, then ticks are displayed on a logarithmic scale and values - are adjusted accordingly. (This is usually accessed by changing the log mode + are adjusted accordingly. (This is usually accessed by changing the log mode of a :func:`PlotItem `) """ self.logMode = log self.picture = None self.update() - + def setTickFont(self, font): self.tickFont = font self.picture = None self.prepareGeometryChange() ## Need to re-allocate space depending on font size? - + self.update() - + def resizeEvent(self, ev=None): #s = self.size() - + ## Set the position of the label nudge = 5 br = self.label.boundingRect() @@ -218,7 +226,7 @@ class AxisItem(GraphicsWidget): p.setY(int(self.size().height()-br.height()+nudge)) self.label.setPos(p) self.picture = None - + def showLabel(self, show=True): """Show/hide the label text for this axis.""" #self.drawLabel = show @@ -229,10 +237,10 @@ class AxisItem(GraphicsWidget): self._updateHeight() if self.autoSIPrefix: self.updateAutoSIPrefix() - + def setLabel(self, text=None, units=None, unitPrefix=None, **args): """Set the text displayed adjacent to the axis. - + ============== ============================================================= **Arguments:** text The text (excluding units) to display on the label for this @@ -244,23 +252,26 @@ class AxisItem(GraphicsWidget): **args All extra keyword arguments become CSS style options for the tag which will surround the axis label and units. ============== ============================================================= - + The final text generated for the label will look like:: - + {text} (prefix{units}) - - Each extra keyword argument will become a CSS option in the above template. + + Each extra keyword argument will become a CSS option in the above template. For example, you can set the font size and color of the label:: - + labelStyle = {'color': '#FFF', 'font-size': '14pt'} axis.setLabel('label text', units='V', **labelStyle) - + """ + show_label = False if text is not None: self.labelText = text - self.showLabel() + show_label = True if units is not None: self.labelUnits = units + show_label = True + if show_label: self.showLabel() if unitPrefix is not None: self.labelUnitPrefix = unitPrefix @@ -270,7 +281,7 @@ class AxisItem(GraphicsWidget): self._adjustSize() self.picture = None self.update() - + def labelString(self): if self.labelUnits == '': if not self.autoSIPrefix or self.autoSIPrefixScale == 1.0: @@ -280,13 +291,13 @@ class AxisItem(GraphicsWidget): else: #print repr(self.labelUnitPrefix), repr(self.labelUnits) units = asUnicode('(%s%s)') % (asUnicode(self.labelUnitPrefix), asUnicode(self.labelUnits)) - + s = asUnicode('%s %s') % (asUnicode(self.labelText), asUnicode(units)) - + style = ';'.join(['%s: %s' % (k, self.labelStyle[k]) for k in self.labelStyle]) - + return asUnicode("%s") % (style, asUnicode(s)) - + def _updateMaxTextSize(self, x): ## Informs that the maximum tick size orthogonal to the axis has ## changed; we use this to decide whether the item needs to be resized @@ -305,22 +316,22 @@ class AxisItem(GraphicsWidget): if self.style['autoExpandTextSpace'] is True: self._updateHeight() #return True ## size has changed - + def _adjustSize(self): if self.orientation in ['left', 'right']: self._updateWidth() else: self._updateHeight() - + def setHeight(self, h=None): """Set the height of this axis reserved for ticks and tick labels. The height of the axis label is automatically added. - + If *height* is None, then the value will be determined automatically based on the size of the tick text.""" self.fixedHeight = h self._updateHeight() - + def _updateHeight(self): if not self.isVisible(): h = 0 @@ -338,20 +349,20 @@ class AxisItem(GraphicsWidget): h += self.label.boundingRect().height() * 0.8 else: h = self.fixedHeight - + self.setMaximumHeight(h) self.setMinimumHeight(h) self.picture = None - + def setWidth(self, w=None): """Set the width of this axis reserved for ticks and tick labels. The width of the axis label is automatically added. - + If *width* is None, then the value will be determined automatically based on the size of the tick text.""" self.fixedWidth = w self._updateWidth() - + def _updateWidth(self): if not self.isVisible(): w = 0 @@ -369,20 +380,20 @@ class AxisItem(GraphicsWidget): w += self.label.boundingRect().height() * 0.8 ## bounding rect is usually an overestimate else: w = self.fixedWidth - + self.setMaximumWidth(w) self.setMinimumWidth(w) self.picture = None - + def pen(self): if self._pen is None: return fn.mkPen(getConfigOption('foreground')) return fn.mkPen(self._pen) - + def setPen(self, *args, **kwargs): """ Set the pen used for drawing text, axes, ticks, and grid lines. - If no arguments are given, the default foreground color will be used + If no arguments are given, the default foreground color will be used (see :func:`setConfigOption `). """ self.picture = None @@ -393,44 +404,44 @@ class AxisItem(GraphicsWidget): self.labelStyle['color'] = '#' + fn.colorStr(self._pen.color())[:6] self.setLabel() self.update() - + def setScale(self, scale=None): """ - Set the value scaling for this axis. - + Set the value scaling for this axis. + Setting this value causes the axis to draw ticks and tick labels as if - the view coordinate system were scaled. By default, the axis scaling is + the view coordinate system were scaled. By default, the axis scaling is 1.0. """ # Deprecated usage, kept for backward compatibility - if scale is None: + if scale is None: scale = 1.0 self.enableAutoSIPrefix(True) - + if scale != self.scale: self.scale = scale self.setLabel() self.picture = None self.update() - + def enableAutoSIPrefix(self, enable=True): """ - Enable (or disable) automatic SI prefix scaling on this axis. - - When enabled, this feature automatically determines the best SI prefix + Enable (or disable) automatic SI prefix scaling on this axis. + + When enabled, this feature automatically determines the best SI prefix to prepend to the label units, while ensuring that axis values are scaled - accordingly. - - For example, if the axis spans values from -0.1 to 0.1 and has units set + accordingly. + + For example, if the axis spans values from -0.1 to 0.1 and has units set to 'V' then the axis would display values -100 to 100 and the units would appear as 'mV' - + This feature is enabled by default, and is only available when a suffix (unit string) is provided to display on the label. """ self.autoSIPrefix = enable self.updateAutoSIPrefix() - + def updateAutoSIPrefix(self): if self.label.isVisible(): (scale, prefix) = fn.siScale(max(abs(self.range[0]*self.scale), abs(self.range[1]*self.scale))) @@ -440,12 +451,12 @@ class AxisItem(GraphicsWidget): self.setLabel(unitPrefix=prefix) else: scale = 1.0 - + self.autoSIPrefixScale = scale self.picture = None self.update() - - + + def setRange(self, mn, mx): """Set the range of values displayed by the axis. Usually this is handled automatically by linking the axis to a ViewBox with :func:`linkToView `""" @@ -456,14 +467,14 @@ class AxisItem(GraphicsWidget): self.updateAutoSIPrefix() self.picture = None self.update() - + def linkedView(self): """Return the ViewBox this axis is linked to""" if self._linkedView is None: return None else: return self._linkedView() - + def linkToView(self, view): """Link this axis to a ViewBox, causing its displayed range to match the visible range of the view.""" oldView = self.linkedView() @@ -476,11 +487,11 @@ class AxisItem(GraphicsWidget): if oldView is not None: oldView.sigXRangeChanged.disconnect(self.linkedViewChanged) view.sigXRangeChanged.connect(self.linkedViewChanged) - + if oldView is not None: oldView.sigResized.disconnect(self.linkedViewChanged) view.sigResized.connect(self.linkedViewChanged) - + def linkedViewChanged(self, view, newRange=None): if self.orientation in ['right', 'left']: if newRange is None: @@ -496,7 +507,7 @@ class AxisItem(GraphicsWidget): self.setRange(*newRange[::-1]) else: self.setRange(*newRange) - + def boundingRect(self): linkedView = self.linkedView() if linkedView is None or self.grid is False: @@ -515,7 +526,7 @@ class AxisItem(GraphicsWidget): return rect else: return self.mapRectFromParent(self.geometry()) | linkedView.mapRectToItem(self, linkedView.boundingRect()) - + def paint(self, p, opt, widget): profiler = debug.Profiler() if self.picture is None: @@ -544,26 +555,26 @@ class AxisItem(GraphicsWidget): [ (minorTickValue1, minorTickString1), (minorTickValue2, minorTickString2), ... ], ... ] - + If *ticks* is None, then the default tick system will be used instead. """ self._tickLevels = ticks self.picture = None self.update() - + def setTickSpacing(self, major=None, minor=None, levels=None): """ - Explicitly determine the spacing of major and minor ticks. This + Explicitly determine the spacing of major and minor ticks. This overrides the default behavior of the tickSpacing method, and disables - the effect of setTicks(). Arguments may be either *major* and *minor*, - or *levels* which is a list of (spacing, offset) tuples for each + the effect of setTicks(). Arguments may be either *major* and *minor*, + or *levels* which is a list of (spacing, offset) tuples for each tick level desired. - + If no arguments are given, then the default behavior of tickSpacing is enabled. - + Examples:: - + # two levels, all offsets = 0 axis.setTickSpacing(5, 1) # three levels, all offsets = 0 @@ -571,7 +582,7 @@ class AxisItem(GraphicsWidget): # reset to default axis.setTickSpacing() """ - + if levels is None: if major is None: levels = None @@ -580,16 +591,16 @@ class AxisItem(GraphicsWidget): self._tickSpacing = levels self.picture = None self.update() - + def tickSpacing(self, minVal, maxVal, size): """Return values describing the desired spacing and offset of ticks. - - This method is called whenever the axis needs to be redrawn and is a + + This method is called whenever the axis needs to be redrawn and is a good method to override in subclasses that require control over tick locations. - + The return value must be a list of tuples, one for each set of ticks:: - + [ (major tick spacing, offset), (minor tick spacing, offset), @@ -600,32 +611,32 @@ class AxisItem(GraphicsWidget): # First check for override tick spacing if self._tickSpacing is not None: return self._tickSpacing - + dif = abs(maxVal - minVal) if dif == 0: return [] - + ## decide optimal minor tick spacing in pixels (this is just aesthetics) optimalTickCount = max(2., np.log(size)) - - ## optimal minor tick spacing + + ## optimal minor tick spacing optimalSpacing = dif / optimalTickCount - + ## the largest power-of-10 spacing which is smaller than optimal p10unit = 10 ** np.floor(np.log10(optimalSpacing)) - + ## Determine major/minor tick spacings which flank the optimal spacing. intervals = np.array([1., 2., 10., 20., 100.]) * p10unit minorIndex = 0 while intervals[minorIndex+1] <= optimalSpacing: minorIndex += 1 - + levels = [ (intervals[minorIndex+2], 0), (intervals[minorIndex+1], 0), #(intervals[minorIndex], 0) ## Pretty, but eats up CPU ] - + if self.style['maxTickLevel'] >= 2: ## decide whether to include the last level of ticks minSpacing = min(size / 20., 30.) @@ -633,16 +644,16 @@ class AxisItem(GraphicsWidget): if dif / intervals[minorIndex] <= maxTickCount: levels.append((intervals[minorIndex], 0)) return levels - - - + + + ##### This does not work -- switching between 2/5 confuses the automatic text-level-selection ### Determine major/minor tick spacings which flank the optimal spacing. #intervals = np.array([1., 2., 5., 10., 20., 50., 100.]) * p10unit #minorIndex = 0 #while intervals[minorIndex+1] <= optimalSpacing: #minorIndex += 1 - + ### make sure we never see 5 and 2 at the same time #intIndexes = [ #[0,1,3], @@ -651,42 +662,42 @@ class AxisItem(GraphicsWidget): #[3,4,6], #[3,5,6], #][minorIndex] - + #return [ #(intervals[intIndexes[2]], 0), #(intervals[intIndexes[1]], 0), #(intervals[intIndexes[0]], 0) #] - + def tickValues(self, minVal, maxVal, size): """ Return the values and spacing of ticks to draw:: - - [ - (spacing, [major ticks]), - (spacing, [minor ticks]), - ... + + [ + (spacing, [major ticks]), + (spacing, [minor ticks]), + ... ] - + By default, this method calls tickSpacing to determine the correct tick locations. This is a good method to override in subclasses. """ minVal, maxVal = sorted((minVal, maxVal)) - - minVal *= self.scale + + minVal *= self.scale maxVal *= self.scale #size *= self.scale - + ticks = [] tickLevels = self.tickSpacing(minVal, maxVal, size) allValues = np.array([]) for i in range(len(tickLevels)): spacing, offset = tickLevels[i] - + ## determine starting tick start = (np.ceil((minVal-offset) / spacing) * spacing) + offset - + ## determine number of ticks num = int((maxVal-start) / spacing) + 1 values = (np.arange(num) * spacing + start) / self.scale @@ -696,11 +707,11 @@ class AxisItem(GraphicsWidget): values = list(filter(lambda x: all(np.abs(allValues-x) > spacing/self.scale*0.01), values)) allValues = np.concatenate([allValues, values]) ticks.append((spacing/self.scale, values)) - + if self.logMode: return self.logTickValues(minVal, maxVal, size, ticks) - - + + #nticks = [] #for t in ticks: #nvals = [] @@ -708,24 +719,24 @@ class AxisItem(GraphicsWidget): #nvals.append(v/self.scale) #nticks.append((t[0]/self.scale,nvals)) #ticks = nticks - + return ticks - + def logTickValues(self, minVal, maxVal, size, stdTicks): - + ## start with the tick spacing given by tickValues(). ## Any level whose spacing is < 1 needs to be converted to log scale - + ticks = [] for (spacing, t) in stdTicks: if spacing >= 1.0: ticks.append((spacing, t)) - + if len(ticks) < 3: v1 = int(np.floor(minVal)) v2 = int(np.ceil(maxVal)) #major = list(range(v1+1, v2)) - + minor = [] for v in range(v1, v2): minor.extend(v + np.log10(np.arange(1, 10))) @@ -734,21 +745,21 @@ class AxisItem(GraphicsWidget): return ticks def tickStrings(self, values, scale, spacing): - """Return the strings that should be placed next to ticks. This method is called + """Return the strings that should be placed next to ticks. This method is called when redrawing the axis and is a good method to override in subclasses. - The method is called with a list of tick values, a scaling factor (see below), and the - spacing between ticks (this is required since, in some instances, there may be only + The method is called with a list of tick values, a scaling factor (see below), and the + spacing between ticks (this is required since, in some instances, there may be only one tick and thus no other way to determine the tick spacing) - + The scale argument is used when the axis label is displaying units which may have an SI scaling prefix. When determining the text to display, use value*scale to correctly account for this prefix. For example, if the axis label's units are set to 'V', then a tick value of 0.001 might - be accompanied by a scale value of 1000. This indicates that the label is displaying 'mV', and + be accompanied by a scale value of 1000. This indicates that the label is displaying 'mV', and thus the tick should display 0.001 * 1000 = 1. """ if self.logMode: return self.logTickStrings(values, scale, spacing) - + places = max(0, np.ceil(-np.log10(spacing*scale))) strings = [] for v in values: @@ -759,27 +770,27 @@ class AxisItem(GraphicsWidget): vstr = ("%%0.%df" % places) % vs strings.append(vstr) return strings - + def logTickStrings(self, values, scale, spacing): return ["%0.1g"%x for x in 10 ** np.array(values).astype(float)] - + def generateDrawSpecs(self, p): """ Calls tickValues() and tickStrings() to determine where and how ticks should - be drawn, then generates from this a set of drawing commands to be + be drawn, then generates from this a set of drawing commands to be interpreted by drawPicture(). """ profiler = debug.Profiler() #bounds = self.boundingRect() bounds = self.mapRectFromParent(self.geometry()) - + linkedView = self.linkedView() if linkedView is None or self.grid is False: tickBounds = bounds else: tickBounds = linkedView.mapRectToItem(self, linkedView.boundingRect()) - + if self.orientation == 'left': span = (bounds.topRight(), bounds.bottomRight()) tickStart = tickBounds.right() @@ -805,7 +816,7 @@ class AxisItem(GraphicsWidget): tickDir = 1 axis = 1 #print tickStart, tickStop, span - + ## determine size of this item in pixels points = list(map(self.mapToDevice, span)) if None in points: @@ -830,7 +841,7 @@ class AxisItem(GraphicsWidget): for val, strn in level: values.append(val) strings.append(strn) - + ## determine mapping between tick values and local coordinates dif = self.range[1] - self.range[0] if dif == 0: @@ -843,29 +854,29 @@ class AxisItem(GraphicsWidget): else: xScale = bounds.width() / dif offset = self.range[0] * xScale - + xRange = [x * xScale - offset for x in self.range] xMin = min(xRange) xMax = max(xRange) - + profiler('init') - + tickPositions = [] # remembers positions of previously drawn ticks - + ## compute coordinates to draw ticks ## draw three different intervals, long ticks first tickSpecs = [] for i in range(len(tickLevels)): tickPositions.append([]) ticks = tickLevels[i][1] - + ## length of tick tickLength = self.style['tickLength'] / ((i*0.5)+1.0) - + lineAlpha = 255 / (i+1) if self.grid is not False: lineAlpha *= self.grid/255. * np.clip((0.05 * lengthInPixels / (len(ticks)+1)), 0., 1.) - + for v in ticks: ## determine actual position to draw this tick x = (v * xScale) - offset @@ -873,7 +884,7 @@ class AxisItem(GraphicsWidget): tickPositions[i].append(None) continue tickPositions[i].append(x) - + p1 = [x, x] p2 = [x, x] p1[axis] = tickStart @@ -887,7 +898,7 @@ class AxisItem(GraphicsWidget): tickSpecs.append((tickPen, Point(p1), Point(p2))) profiler('compute ticks') - + if self.style['stopAxisAtTick'][0] is True: stop = max(span[0].y(), min(map(min, tickPositions))) if axis == 0: @@ -902,7 +913,7 @@ class AxisItem(GraphicsWidget): span[1].setX(stop) axisSpec = (self.pen(), span[0], span[1]) - + textOffset = self.style['tickTextOffset'][axis] ## spacing between axis and text #if self.style['autoExpandTextSpace'] is True: #textWidth = self.textWidth @@ -910,15 +921,15 @@ class AxisItem(GraphicsWidget): #else: #textWidth = self.style['tickTextWidth'] ## space allocated for horizontal text #textHeight = self.style['tickTextHeight'] ## space allocated for horizontal text - + textSize2 = 0 textRects = [] textSpecs = [] ## list of draw - + # If values are hidden, return early if not self.style['showValues']: return (axisSpec, tickSpecs, textSpecs) - + for i in range(min(len(tickLevels), self.style['maxTextLevel']+1)): ## Get the list of strings to display for this level if tickStrings is None: @@ -926,10 +937,10 @@ class AxisItem(GraphicsWidget): strings = self.tickStrings(values, self.autoSIPrefixScale * self.scale, spacing) else: strings = tickStrings[i] - + if len(strings) == 0: continue - + ## ignore strings belonging to ticks that were previously ignored for j in range(len(strings)): if tickPositions[i][j] is None: @@ -945,10 +956,10 @@ class AxisItem(GraphicsWidget): ## boundingRect is usually just a bit too large ## (but this probably depends on per-font metrics?) br.setHeight(br.height() * 0.8) - + rects.append(br) textRects.append(rects[-1]) - + if len(textRects) > 0: ## measure all text, make sure there's enough room if axis == 0: @@ -973,7 +984,7 @@ class AxisItem(GraphicsWidget): break if finished: break - + #spacing, values = tickLevels[best] #strings = self.tickStrings(values, self.scale, spacing) # Determine exactly where tick text should be drawn @@ -1006,24 +1017,24 @@ class AxisItem(GraphicsWidget): #p.drawText(rect, textFlags, vstr) textSpecs.append((rect, textFlags, vstr)) profiler('compute text') - + ## update max text size if needed. self._updateMaxTextSize(textSize2) - + return (axisSpec, tickSpecs, textSpecs) - + def drawPicture(self, p, axisSpec, tickSpecs, textSpecs): profiler = debug.Profiler() p.setRenderHint(p.Antialiasing, False) p.setRenderHint(p.TextAntialiasing, True) - + ## draw long line along axis pen, p1, p2 = axisSpec p.setPen(pen) p.drawLine(p1, p2) p.translate(0.5,0) ## resolves some damn pixel ambiguity - + ## draw ticks for pen, p1, p2 in tickSpecs: p.setPen(pen) @@ -1045,7 +1056,7 @@ class AxisItem(GraphicsWidget): self._updateWidth() else: self._updateHeight() - + def hide(self): GraphicsWidget.hide(self) if self.orientation in ['left', 'right']: @@ -1054,23 +1065,23 @@ class AxisItem(GraphicsWidget): self._updateHeight() def wheelEvent(self, ev): - if self.linkedView() is None: + if self.linkedView() is None: return if self.orientation in ['left', 'right']: self.linkedView().wheelEvent(ev, axis=1) else: self.linkedView().wheelEvent(ev, axis=0) ev.accept() - + def mouseDragEvent(self, event): - if self.linkedView() is None: + if self.linkedView() is None: return if self.orientation in ['left', 'right']: return self.linkedView().mouseDragEvent(event, axis=1) else: return self.linkedView().mouseDragEvent(event, axis=0) - + def mouseClickEvent(self, event): - if self.linkedView() is None: + if self.linkedView() is None: return return self.linkedView().mouseClickEvent(event)