I wish to emulate or most media players' sliders - where clicking anywhere on the slider widget skips the video to that position. How can I get the slider's value under the mouse click and set the value to that?
By default, when clicked on the slider, it only scrolls by a Pagesize at a time, not scrolls to the position user clicked.
The following code works in Windows XP, however I have no idea how to get the GAP constant in another way than by experimenting. The GAP value indicates what is the empty space between edge of the widget and actual start of the drawn slider.
import wx
GAP = 12
class VideoSlider(wx.Slider):
def __init__(self, gap, *args, **kwargs):
wx.Slider.__init__(self, *args, **kwargs)
self.gap = gap
self.Bind(wx.EVT_LEFT_DOWN, self.OnClick)
def linapp(self, x1, x2, y1, y2, x):
return (float(x - x1) / (x2 - x1)) * (y2 - y1) + y1
def OnClick(self, e):
click_min = self.gap
click_max = self.GetSize()[0] - self.gap
click_position = e.GetX()
result_min = self.GetMin()
result_max = self.GetMax()
if click_position > click_min and click_position < click_max:
result = self.linapp(click_min, click_max,
result_min, result_max,
click_position)
elif click_position <= click_min:
result = result_min
else:
result = result_max
self.SetValue(result)
e.Skip()
class MainWindow(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.panel = wx.Panel(self)
self.slider = VideoSlider(parent=self.panel, size=(300, -1), gap=GAP)
self.slider.Bind(wx.EVT_SLIDER, self.OnSlider)
self.sizer = wx.BoxSizer()
self.sizer.Add(self.slider)
self.panel.SetSizerAndFit(self.sizer)
self.Show()
def OnSlider(self, e):
print(self.slider.GetValue())
app = wx.App(False)
win = MainWindow(None)
app.MainLoop()
Create a new control by inheritance from the slider. The only change from the base slider control is that you override the method that handles mouse click events, Your method needs to do two things: call the routine that you use to 'skip the video to the mouse click' and call the base slider control mouse click handler so it can look after the visual feedback details.
