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pygauge.py
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pygauge.py
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# --------------------------------------------------------------------------------- #
# PYFAGAUGE wxPython IMPLEMENTATION
#
# Darriele, @ 08/30/2010
# Updated: 09/07/2010
# Based on AWG : pygauge code
# --------------------------------------------------------------------------------- #
"""
PyfaGauge is a generic Gauge implementation tailored for PYFA (Python Fitting Assistant)
It uses the easeOutQuad equation from caurina.transitions.Tweener to do the animation stuff
"""
import wx
import copy
import math
from gui.utils import colorUtils
import gui.utils.drawUtils as drawUtils
import gui.utils.animEffects as animEffects
class PyGauge(wx.PyWindow):
"""
This class provides a visual alternative for `wx.Gauge`. It currently
only support determinant mode (see SetValue and SetRange)
"""
def __init__(self, parent, id=wx.ID_ANY, range=100, pos=wx.DefaultPosition,
size=(-1,30), style=0):
"""
Default class constructor.
:param `parent`: parent window. Must not be ``None``;
:param `id`: window identifier. A value of -1 indicates a default value;
:param `pos`: the control position. A value of (-1, -1) indicates a default position,
chosen by either the windowing system or wxPython, depending on platform;
:param `size`: the control size. A value of (-1, -1) indicates a default size,
chosen by either the windowing system or wxPython, depending on platform.
"""
wx.PyWindow.__init__(self, parent, id, pos, size, style)
self._size = size
self._border_colour = wx.BLACK
self._barColour = self._barColourSorted = [wx.Colour(212,228,255)]
self._barGradient = self._barGradientSorted = None
self._border_padding = 0
self._range = range
self._value = 0
self._fractionDigits = 0
self._timerId = wx.NewId()
self._timer = None
self._oldValue = 0
self._animDuration = 500
self._animStep = 0
self._period = 20
self._animValue = 0
self._animDirection = 0
self.animEffect = animEffects.OUT_QUAD
self.transitionsColors = [( wx.Colour(191, 191, 191, 255) , wx.Colour(96, 191, 0, 255) ),
( wx.Colour(191, 167, 96, 255) , wx.Colour(255, 191, 0, 255) ),
( wx.Colour(255, 191, 0, 255) , wx.Colour(255, 128, 0, 255) ),
( wx.Colour(255, 128, 0, 255) , wx.Colour(255, 0, 0, 255) )]
self.gradientEffect = -35
self._percentage = 0
self._oldPercentage = 0
self._showRemaining = False
self.font = wx.FontFromPixelSize((0,14),wx.SWISS, wx.NORMAL, wx.NORMAL, False)
self.SetBarGradient((wx.Colour(119,119,119),wx.Colour(153,153,153)))
self.SetBackgroundColour(wx.Colour(51,51,51))
self._tooltip = wx.ToolTip("")
self.SetToolTip(self._tooltip)
self._tooltip.SetTip("0/0")
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
self.Bind(wx.EVT_TIMER, self.OnTimer)
self.Bind(wx.EVT_ENTER_WINDOW, self.OnWindowEnter)
self.Bind(wx.EVT_LEAVE_WINDOW, self.OnWindowLeave)
def OnWindowEnter(self, event):
self._showRemaining = True
self.Refresh()
def OnWindowLeave(self, event):
self._showRemaining = False
self.Refresh()
def DoGetBestSize(self):
"""
Overridden base class virtual. Determines the best size of the
button based on the label and bezel size.
"""
return wx.Size(self._size[0], self._size[1])
def GetBorderColour(self):
return self._border_colour
def SetBorderColour(self, colour):
self._border_colour = colour
SetBorderColor = SetBorderColour
GetBorderColor = GetBorderColour
def GetBarColour(self):
return self._barColour[0]
def SetBarColour(self, colour):
if type(colour) != type([]):
self._barColour = [colour]
else:
self._barColour = list(colour)
SetBarColor = SetBarColour
GetBarColor = GetBarColour
def SetFractionDigits(self, digits):
self._fractionDigits=digits
def GetBarGradient(self):
""" Returns a tuple containing the gradient start and end colours. """
if self._barGradient == None:
return None
return self._barGradient[0]
def SetBarGradient(self, gradient = None):
"""
Sets the bar gradient. This overrides the BarColour.
:param `gradient`: a tuple containing the gradient start and end colours.
"""
if gradient == None:
self._barGradient = None
else:
if type(gradient) != type([]):
self._barGradient = [gradient]
else:
self._barGradient = list(gradient)
def GetBorderPadding(self):
""" Gets the border padding. """
return self._border_padding
def SetBorderPadding(self, padding):
"""
Sets the border padding.
:param `padding`: pixels between the border and the progress bar.
"""
self._border_padding = padding
def GetRange(self):
""" Returns the maximum value of the gauge. """
return self._range
def Animate(self):
if not self._timer:
self._timer = wx.Timer(self, self._timerId)
self._animStep = 0
self._timer.Start(self._period)
def SetRange(self, range, reinit = False):
"""
Sets the range of the gauge. The gauge length is its
value as a proportion of the range.
:param `range`: The maximum value of the gauge.
"""
if self._range == range:
return
range = float(range)
if range <= 0:
self._range = 0.01
else:
self._range = range
if reinit is False:
self._oldPercentage = self._percentage
self._percentage = (self._value/self._range) * 100
else:
self._oldPercentage = self._percentage
self._percentage = 0
self._value = 0
self.Animate()
self._tooltip.SetTip("%.2f/%.2f" % (self._value, self._range if self._range >0.01 else 0))
def GetValue(self):
""" Returns the current position of the gauge. """
return self._value
def SetValue(self, value):
""" Sets the current position of the gauge. """
if self._value == value:
return
value = float(value)
self._oldPercentage = self._percentage
self._value = value
if value < 0:
self._value = 0
self._percentage = (self._value/self._range) * 100
self.Animate()
self._tooltip.SetTip("%.2f/%.2f" % (self._value, self._range))
def SetValueRange(self, value, range, reinit = False):
if self._value == value and self._range == range:
return
range = float(range)
if range <= 0:
self._range = 0.01
else:
self._range = range
value = float(value)
self._value = value
if value < 0:
self._value = float(0)
if reinit is False:
self._oldPercentage = self._percentage
self._percentage = (self._value/self._range) * 100
else:
self._oldPercentage = self._percentage
self._percentage = 0
self.Animate()
self._tooltip.SetTip("%.2f/%.2f" % (self._value, self._range if self._range >0.01 else 0))
def OnEraseBackground(self, event):
"""
Handles the ``wx.EVT_ERASE_BACKGROUND`` event for L{PyGauge}.
:param `event`: a `wx.EraseEvent` event to be processed.
:note: This method is intentionally empty to reduce flicker.
"""
pass
def OnPaint(self, event):
"""
Handles the ``wx.EVT_PAINT`` event for L{PyGauge}.
:param `event`: a `wx.PaintEvent` event to be processed.
"""
dc = wx.BufferedPaintDC(self)
rect = self.GetClientRect()
dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
dc.Clear()
colour = self.GetBackgroundColour()
dc.SetBrush(wx.Brush(colour))
dc.SetPen(wx.Pen(colour))
dc.DrawRectangleRect(rect)
value = self._percentage
if self._timer:
if self._timer.IsRunning():
value = self._animValue
if self._border_colour:
dc.SetPen(wx.Pen(self.GetBorderColour()))
dc.DrawRectangleRect(rect)
pad = 1 + self.GetBorderPadding()
rect.Deflate(pad,pad)
if self.GetBarGradient():
if value > 100:
w = rect.width
else:
w = rect.width * (float(value) / 100)
r = copy.copy(rect)
r.width = w
pv = value
xv=1
transition = 0
if pv <= 100:
xv = pv/100
transition = 0
elif pv <=101:
xv = pv -100
transition = 1
elif pv <= 103:
xv = (pv -101)/2
transition = 2
elif pv <= 105:
xv = (pv -103)/2
transition = 3
else:
pv = 106
xv = pv -100
transition = -1
if transition != -1:
colorS,colorE = self.transitionsColors[transition]
color = colorUtils.CalculateTransitionColor(colorS, colorE, xv)
else:
color = wx.Colour(191,48,48)
if self.gradientEffect > 0:
gcolor = colorUtils.BrightenColor(color, float(self.gradientEffect) / 100)
gMid = colorUtils.BrightenColor(color, float(self.gradientEffect/2) / 100)
else:
gcolor = colorUtils.DarkenColor(color, float(-self.gradientEffect) / 100)
gMid = colorUtils.DarkenColor(color, float(-self.gradientEffect/2) / 100)
gBmp = drawUtils.DrawGradientBar(r.width, r.height, gMid, color, gcolor)
dc.DrawBitmap(gBmp,r.left, r.top)
else:
colour=self.GetBarColour()
dc.SetBrush(wx.Brush(colour))
dc.SetPen(wx.Pen(colour))
if value > 100:
w = rect.width
else:
w = rect.width * (float(value) / 100)
r = copy.copy(rect)
r.width = w
dc.DrawRectangleRect(r)
dc.SetFont(self.font)
r = copy.copy(rect)
r.left +=1
r.top +=1
if self._range == 0.01 and self._value > 0:
formatStr = u'\u221e'
dc.SetTextForeground(wx.Colour(80,80,80))
dc.DrawLabel(formatStr, r, wx.ALIGN_CENTER)
dc.SetTextForeground(wx.Colour(255,255,255))
dc.DrawLabel(formatStr, rect, wx.ALIGN_CENTER)
else:
if self.GetBarGradient() and self._showRemaining:
formatStr = "{0:." + str(self._fractionDigits) + "f} left"
range = self._range if self._range > 0.01 else 0
value = max( range - self._value , 0)
else:
formatStr = "{0:." + str(self._fractionDigits) + "f}%"
dc.SetTextForeground(wx.Colour(80,80,80))
dc.DrawLabel(formatStr.format(value), r, wx.ALIGN_CENTER)
dc.SetTextForeground(wx.Colour(255,255,255))
dc.DrawLabel(formatStr.format(value), rect, wx.ALIGN_CENTER)
def OnTimer(self,event):
"""
Handles the ``wx.EVT_TIMER`` event for L{PyfaGauge}.
:param `event`: a timer event
"""
oldValue=self._oldPercentage
value=self._percentage
start = 0
direction = 1 if oldValue < value else -1
end = direction * (value - oldValue)
self._animDirection = direction
step = self.animEffect(self._animStep, start, end, self._animDuration)
self._animStep += self._period
if self._timerId == event.GetId():
stop_timer = False
if self._animStep > self._animDuration:
stop_timer = True
if direction == 1:
if (oldValue+step) < value:
self._animValue = oldValue+step
else:
stop_timer = True
else:
if (oldValue-step) > value:
self._animValue = oldValue-step
else:
stop_timer = True
if stop_timer:
self._timer.Stop()
self.Refresh()