mirror of
https://github.com/wxWidgets/Phoenix.git
synced 2025-12-16 01:30:07 +01:00
89 lines
2.6 KiB
Python
89 lines
2.6 KiB
Python
"""
|
|
A simple sample of using a wx.Overlay to draw a rubberband effect
|
|
"""
|
|
|
|
import wx
|
|
print(wx.version())
|
|
|
|
class TestPanel(wx.Panel):
|
|
def __init__(self, *args, **kw):
|
|
wx.Panel.__init__(self, *args, **kw)
|
|
|
|
self.Bind(wx.EVT_PAINT, self.OnPaint)
|
|
self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
|
|
self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
|
|
self.Bind(wx.EVT_MOTION, self.OnMouseMove)
|
|
|
|
self.startPos = None
|
|
self.overlay = wx.Overlay()
|
|
|
|
wx.TextCtrl(self, pos=(140,20))
|
|
|
|
|
|
def OnPaint(self, evt):
|
|
# Just some simple stuff to paint in the window for an example
|
|
dc = wx.PaintDC(self)
|
|
dc.SetBackground(wx.Brush("sky blue"))
|
|
dc.Clear()
|
|
dc.DrawLabel("Drag the mouse across this window to see \n"
|
|
"a rubber-band effect using wx.Overlay",
|
|
(140, 50, -1, -1))
|
|
|
|
coords = ((40,40),(200,220),(210,120),(120,300))
|
|
dc = wx.GCDC(dc)
|
|
dc.SetPen(wx.Pen("red", 2))
|
|
dc.SetBrush(wx.CYAN_BRUSH)
|
|
dc.DrawPolygon(coords)
|
|
|
|
|
|
def OnLeftDown(self, evt):
|
|
# Capture the mouse and save the starting position for the
|
|
# rubber-band
|
|
self.CaptureMouse()
|
|
self.startPos = evt.GetPosition()
|
|
|
|
|
|
def OnMouseMove(self, evt):
|
|
if evt.Dragging() and evt.LeftIsDown():
|
|
rect = wx.Rect(topLeft=self.startPos, bottomRight=evt.GetPosition())
|
|
|
|
# Draw the rubber-band rectangle using an overlay so it
|
|
# will manage keeping the rectangle and the former window
|
|
# contents separate.
|
|
dc = wx.ClientDC(self)
|
|
odc = wx.DCOverlay(self.overlay, dc)
|
|
odc.Clear()
|
|
|
|
# Mac's DC is already the same as a GCDC, and it causes
|
|
# problems with the overlay if we try to use an actual
|
|
# wx.GCDC so don't try it.
|
|
if 'wxMac' not in wx.PlatformInfo:
|
|
dc = wx.GCDC(dc)
|
|
|
|
dc.SetPen(wx.Pen("black", 2))
|
|
dc.SetBrush(wx.Brush(wx.Colour(0xC0, 0xC0, 0xC0, 0x80)))
|
|
dc.DrawRectangle(rect)
|
|
|
|
|
|
def OnLeftUp(self, evt):
|
|
if self.HasCapture():
|
|
self.ReleaseMouse()
|
|
self.startPos = None
|
|
|
|
# When the mouse is released we reset the overlay and it
|
|
# restores the former content to the window.
|
|
dc = wx.ClientDC(self)
|
|
odc = wx.DCOverlay(self.overlay, dc)
|
|
odc.Clear()
|
|
del odc
|
|
self.overlay.Reset()
|
|
|
|
|
|
|
|
app = wx.App(redirect=False)
|
|
frm = wx.Frame(None, title="wx.Overlay Test", size=(450,450))
|
|
#frm.SetDoubleBuffered(True)
|
|
pnl = TestPanel(frm)
|
|
frm.Show()
|
|
app.MainLoop()
|