Lerking/Phoenix
1
0
Fork 0
mirror of https://github.com/wxWidgets/Phoenix.git synced 2026-01-05 11:30:06 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

ticker Phoenix Fixes

Browse Source 
ticker Phoenix Fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74220 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
2013-06-13 07:20:25 +00:00
parent 791338a73e
commit c0130eb674
1 changed files with 48 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
wx/lib/ticker.py
View File

@@ -13,11 +13,11 @@
"""News-ticker style scrolling text control
* Can scroll from right to left or left to right.
* Speed of the ticking is controlled by two parameters:
- Frames per Second(FPS): How many times per second the ticker updates
- Pixels per Frame(PPF): How many pixels the text moves each update
Low FPS with high PPF will result in "jumpy" text, lower PPF with higher FPS
@@ -28,21 +28,21 @@ import wx
#----------------------------------------------------------------------
class Ticker(wx.PyControl):
def __init__(self,
parent,
id=-1,
text=wx.EmptyString, #text in the ticker
fgcolor = wx.BLACK, #text/foreground color
bgcolor = wx.WHITE, #background color
start=True, #if True, the ticker starts immediately
ppf=2, #pixels per frame
fps=20, #frames per second
direction="rtl", #direction of ticking, rtl or ltr
pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.NO_BORDER,
class Ticker(wx.Control):
def __init__(self,
parent,
id=-1,
text=wx.EmptyString, #text in the ticker
fgcolor = wx.BLACK, #text/foreground color
bgcolor = wx.WHITE, #background color
start=True, #if True, the ticker starts immediately
ppf=2, #pixels per frame
fps=20, #frames per second
direction="rtl", #direction of ticking, rtl or ltr
pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.NO_BORDER,
name="Ticker"
):
wx.PyControl.__init__(self, parent, id=id, pos=pos, size=size, style=style, name=name)
wx.Control.__init__(self, parent, id=id, pos=pos, size=size, style=style, name=name)
self.timer = wx.Timer(owner=self)
self._extent = (-1, -1) #cache value for the GetTextExtent call
self._offset = 0
@@ -53,56 +53,56 @@ class Ticker(wx.PyControl):
self.SetInitialSize(size)
self.SetForegroundColour(fgcolor)
self.SetBackgroundColour(bgcolor)
wx.EVT_TIMER(self, -1, self.OnTick)
wx.EVT_PAINT(self, self.OnPaint)
wx.EVT_ERASE_BACKGROUND(self, self.OnErase)
self.Bind(wx.EVT_TIMER, self.OnTick)
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnErase)
if start:
self.Start()
def Stop(self):
"""Stop moving the text"""
self.timer.Stop()
def Start(self):
"""Starts the text moving"""
if not self.timer.IsRunning():
self.timer.Start(1000 / self._fps)
def IsTicking(self):
"""Is the ticker ticking? ie, is the text moving?"""
return self.timer.IsRunning()
def SetFPS(self, fps):
"""Adjust the update speed of the ticker"""
self._fps = fps
self.Stop()
self.Start()
def GetFPS(self):
"""Update speed of the ticker"""
return self._fps
def SetPPF(self, ppf):
"""Set the number of pixels per frame the ticker moves - ie, how "jumpy" it is"""
self._ppf = ppf
def GetPPF(self):
"""Pixels per frame"""
return self._ppf
def SetFont(self, font):
self._extent = (-1, -1)
wx.Control.SetFont(self, font)
def SetDirection(self, dir):
"""Sets the direction of the ticker: right to left(rtl) or left to right (ltr)"""
if dir == "ltr" or dir == "rtl":
@@ -113,23 +113,23 @@ class Ticker(wx.PyControl):
else:
raise TypeError
def GetDirection(self):
return self._dir
def SetText(self, text):
"""Set the ticker text."""
self._text = text
self._extent = (-1, -1)
if not self._text:
self.Refresh() #Refresh here to clear away the old text.
def GetText(self):
return self._text
def UpdateExtent(self, dc):
"""Updates the cached text extent if needed"""
if not self._text:
@@ -137,8 +137,8 @@ class Ticker(wx.PyControl):
return
if self._extent == (-1, -1):
self._extent = dc.GetTextExtent(self.GetText())
def DrawText(self, dc):
"""Draws the ticker text at the current offset using the provided DC"""
dc.SetTextForeground(self.GetForegroundColour())
@@ -150,8 +150,8 @@ class Ticker(wx.PyControl):
offx = self.GetSize()[0] - self._offset
offy = (self.GetSize()[1] - self._extent[1]) / 2 #centered vertically
dc.DrawText(self._text, offx, offy)
def OnTick(self, evt):
self._offset += self._ppf
w1 = self.GetSize()[0]
@@ -159,26 +159,26 @@ class Ticker(wx.PyControl):
if self._offset >= w1+w2:
self._offset = 0
self.Refresh()
def OnPaint(self, evt):
dc = wx.BufferedPaintDC(self)
brush = wx.Brush(self.GetBackgroundColour())
dc.SetBackground(brush)
dc.Clear()
self.DrawText(dc)
def OnErase(self, evt):
"""Noop because of double buffering"""
pass
def AcceptsFocus(self):
"""Non-interactive, so don't accept focus"""
return False
def DoGetBestSize(self):
"""Width we don't care about, height is either -1, or the character
height of our text with a little extra padding
@@ -193,23 +193,22 @@ class Ticker(wx.PyControl):
return (100, h+5)
def ShouldInheritColours(self):
def ShouldInheritColours(self):
"""Don't get colours from our parent..."""
return False
#testcase/demo
if __name__ == '__main__':
app = wx.PySimpleApp()
app = wx.App()
f = wx.Frame(None)
p = wx.Panel(f)
t = Ticker(p, text="Some sample ticker text")
t = Ticker(p, text="Some sample ticker text")
#set ticker properties here if you want
s = wx.BoxSizer(wx.VERTICAL)
s.Add(t, flag=wx.GROW, proportion=0)
p.SetSizer(s)
f.Show()
app.MainLoop()