104 

   105 # Define tooltip wait for displaying period in second

   106 TOOLTIP_WAIT_PERIOD = 0.5

   556 

   557 #-------------------------------------------------------------------------------

   558 #                               Viewer ToolTip

   559 #-------------------------------------------------------------------------------

   560 

   561 """

   562 Class that implements a custom tool tip

   563 """

   564 

   565 if wx.Platform == '__WXMSW__':

   566     faces = { 'times': 'Times New Roman',

   567               'mono' : 'Courier New',

   568               'helv' : 'Arial',

   569               'other': 'Comic Sans MS',

   570               'size' : 10,

   571              }

   572 else:

   573     faces = { 'times': 'Times',

   574               'mono' : 'Courier',

   575               'helv' : 'Helvetica',

   576               'other': 'new century schoolbook',

   577               'size' : 12,

   578              }

   579 

   580 TOOLTIP_MAX_CHARACTERS = 30

   581 TOOLTIP_MAX_LINE = 5

   582 

   583 class ToolTip(wx.PopupWindow):

   584     

   585     def __init__(self, parent, tip, restricted=True):

   586         wx.PopupWindow.__init__(self, parent)

   587         

   588         self.CurrentPosition = wx.Point(0, 0)

   589         self.Restricted = restricted

   590         

   591         self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)

   592         self.SetTip(tip)

   593         

   594         self.Font = wx.Font(faces["size"], wx.SWISS, wx.NORMAL, wx.NORMAL, faceName = faces["mono"])

   595         

   596         self.Bind(wx.EVT_PAINT, self.OnPaint)

   597     

   598     def SetFont(self, font):

   599         self.Font = font

   600         self.RefreshTip()

   601     

   602     def SetTip(self, tip):

   603         lines = []

   604         for line in tip.splitlines():

   605             if self.Restricted and line != "":

   606                 words = line.split()

   607                 new_line = words[0]

   608                 for word in words[1:]:

   609                     if len(new_line + " " + word) <= TOOLTIP_MAX_CHARACTERS:

   610                         new_line += " " + word

   611                     else:

   612                         lines.append(new_line)

   613                         new_line = word

   614                 lines.append(new_line)

   615             else:

   616                 lines.append(line)

   617         if self.Restricted and len(lines) > TOOLTIP_MAX_LINE:

   618             self.Tip = lines[:TOOLTIP_MAX_LINE]

   619             if len(self.Tip[-1]) < TOOLTIP_MAX_CHARACTERS - 3:

   620                 self.Tip[-1] += "..."

   621             else:

   622                 self.Tip[-1] = self.Tip[-1][:TOOLTIP_MAX_CHARACTERS - 3] + "..."

   623         else:

   624             self.Tip = lines

   625         wx.CallAfter(self.RefreshTip)

   626     

   627     def MoveToolTip(self, pos):

   628         screen_size = wx.GetDisplaySize()

   629         w, h = self.GetTipExtent()

   630         self.CurrentPosition = wx.Point(

   631             max(0, min(pos.x, screen_size[0] - w - 4)),

   632             max(0, min(pos.y, screen_size[1] - h - 4))) 

   633         self.SetPosition(pos)

   634     

   635     def GetTipExtent(self):

   636         max_width = 0

   637         max_height = 0

   638         for line in self.Tip:

   639             dc = wx.MemoryDC()

   640             dc.SetFont(self.Font)

   641             w, h = dc.GetTextExtent(line)

   642             max_width = max(max_width, w)

   643             max_height += h

   644         return max_width, max_height

   645     

   646     def RefreshTip(self):

   647         if self:

   648             w, h = self.GetTipExtent()

   649             self.SetSize(wx.Size(w + 4, h + 4))

   650             self.SetPosition(self.CurrentPosition)

   651             self.Refresh()

   652         

   653     def OnPaint(self, event):

   654         dc = wx.AutoBufferedPaintDC(self)

   655         dc.Clear()

   656         dc.SetPen(MiterPen(wx.BLACK))

   657         dc.SetBrush(wx.Brush(wx.Colour(255, 238, 170)))

   658         dc.SetFont(self.Font)

   659         dc.BeginDrawing()

   660         w, h = self.GetTipExtent()

   661         dc.DrawRectangle(0, 0, w + 4, h + 4)

   662         offset = 0

   663         for line in self.Tip:

   664             dc.DrawText(line, 2, offset + 2)

   665             w, h = dc.GetTextExtent(line)

   666             offset += h

   667         dc.EndDrawing()

   668         event.Skip()