Python wx.EVT_PAINT Examples

def __init__(self, parent, id):
        style = wx.WANTS_CHARS | wx.FULL_REPAINT_ON_RESIZE | wx.NO_BORDER
        wx.Control.__init__(self, parent, id, style = style)

        self.panel = parent

        wx.EVT_SIZE(self, self.OnSize)
        wx.EVT_PAINT(self, self.OnPaint)
        wx.EVT_ERASE_BACKGROUND(self, self.OnEraseBackground)
        wx.EVT_LEFT_DOWN(self, self.OnLeftDown)
        wx.EVT_LEFT_UP(self, self.OnLeftUp)
        wx.EVT_LEFT_DCLICK(self, self.OnLeftDown)
        wx.EVT_RIGHT_DOWN(self, self.OnRightDown)
        wx.EVT_MOTION(self, self.OnMotion)
        wx.EVT_MOUSEWHEEL(self, self.OnMouseWheel)
        wx.EVT_CHAR(self, self.OnKeyChar)

        self.createEmptySp()
        self.updateScreen(redraw = False) 

def __init__(self, parent, capture, fps=24):
        wx.Panel.__init__(self, parent)
                
        self.capture = capture2
        ret, frame = self.capture.read()


        sal = mr_sal.saliency(frame)
        sal = cv2.resize(sal,(320,240)).astype(sp.uint8)
        sal = cv2.normalize(sal, None, 0, 255, cv2.NORM_MINMAX)
        outsal = cv2.applyColorMap(sal,cv2.COLORMAP_HSV)
        self.bmp = wx.BitmapFromBuffer(320,240, outsal.astype(sp.uint8))

        self.timer = wx.Timer(self)
        self.timer.Start(1000./fps)

        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_TIMER, self.NextFrame) 

def __init__(self, parent, tip, restricted=True):
        """
        Constructor
        @param parent: Parent window
        @param tip: Tip text (may be multiline)
        @param restricted: Tool tip must follow size restriction in line and
            characters number defined (default True)
        """
        wx.PopupWindow.__init__(self, parent)

        self.Restricted = restricted

        self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
        self.SetTip(tip)

        # Initialize text font style
        self.Font = wx.Font(
            faces["size"],
            wx.SWISS,
            wx.NORMAL,
            wx.NORMAL,
            faceName=faces["mono"])

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

def __init__(self, parent, id, getCfgGui):
        wx.Window.__init__(self, parent, id, size = (MyStatus.WIDTH, TAB_BAR_HEIGHT),
                           style = wx.FULL_REPAINT_ON_RESIZE)

        self.getCfgGui = getCfgGui

        self.page = 0
        self.pageCnt = 0
        self.elemType = ""
        self.tabNext = ""
        self.enterNext = ""

        self.elementFont = util.createPixelFont(
            TAB_BAR_HEIGHT // 2 + 6, wx.FONTFAMILY_DEFAULT, wx.NORMAL, wx.NORMAL)

        self.font = util.createPixelFont(
            TAB_BAR_HEIGHT // 2 + 2, wx.FONTFAMILY_DEFAULT, wx.NORMAL, wx.NORMAL)

        wx.EVT_PAINT(self, self.OnPaint) 

def __init__(self, parent):
        wx.Panel.__init__(self, parent, size=(-1, 25), style=wx.SUNKEN_BORDER)

        self._value = LEVEL_MIN
        self._threshold = LEVEL_MIN
        self._noise = None

        font = self.GetFont()
        font.SetFamily(wx.FONTFAMILY_MODERN)
        self.SetFont(font)

        self.SetMinSize((250, 25))

        self.Bind(wx.EVT_PAINT, self.__on_paint)
        self.Bind(wx.EVT_SIZE, self.__on_size)

        try:
            self.SetBackgroundStyle(wx.BG_STYLE_PAINT)
        except AttributeError:
            pass 

def _init_base_layout(self):
        """Initialize parameters

            This method performs initializations that are common to all GUIs,
            such as the setting up of a timer.

            It then calls an abstract method self.init_custom_layout() that
            allows for additional, application-specific initializations.
        """
        # set up periodic screen capture
        self.timer = wx.Timer(self)
        self.timer.Start(1000./self.fps)
        self.Bind(wx.EVT_TIMER, self._on_next_frame)
        self.Bind(wx.EVT_PAINT, self._on_paint)

        # allow for custom modifications
        self._init_custom_layout() 

def __init__(self, parent):
        wx.Frame.__init__(
            self,
            parent,
            -1,
            "OSD Window",
            size=(0, 0),
            style=(
                wx.FRAME_SHAPED |
                wx.NO_BORDER |
                wx.FRAME_NO_TASKBAR |
                wx.STAY_ON_TOP
            )
        )
        self.hwnd = self.GetHandle()
        self.bitmap = wx.EmptyBitmap(0, 0)
        # we need a timer to possibly cancel it
        self.timer = threading.Timer(0.0, eg.DummyFunc)
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_CLOSE, self.OnClose) 

def __init__(self, *args, **kwds):
        kwds["style"] = wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)
        
        self.GLinitialized = False
        attribList = (glcanvas.WX_GL_RGBA, # RGBA
                      glcanvas.WX_GL_DOUBLEBUFFER, # Double Buffered
                      glcanvas.WX_GL_DEPTH_SIZE, 24) # 24 bit

        # Create the canvas

        self.canvas = glcanvas.GLCanvas(self, attribList=attribList)

        # Set the event handlers.

        self.canvas.Bind(wx.EVT_ERASE_BACKGROUND, self._doEraseBackground)
        self.canvas.Bind(wx.EVT_SIZE, self._doSize)
        self.canvas.Bind(wx.EVT_PAINT, self._doPaint)

    # Canvas Proxy Methods 

def __init__(self, *args, **kwds):
        kwds["style"] = wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)
        
        self.GLinitialized = False
        attribList = (glcanvas.WX_GL_RGBA, # RGBA
                      glcanvas.WX_GL_DOUBLEBUFFER, # Double Buffered
                      glcanvas.WX_GL_DEPTH_SIZE, 24) # 24 bit

        # Create the canvas

        self.canvas = glcanvas.GLCanvas(self, attribList=attribList)

        # Set the event handlers.

        self.canvas.Bind(wx.EVT_ERASE_BACKGROUND, self._doEraseBackground)
        self.canvas.Bind(wx.EVT_SIZE, self._doSize)
        self.canvas.Bind(wx.EVT_PAINT, self._doPaint)

    # Canvas Proxy Methods 

def destroy_widget(self, level):
        if self.widget is None: return
        if misc.currently_under_mouse is self.widget:
            misc.currently_under_mouse = None

        self.widget.Hide()

        if wx.VERSION_STRING!="2.8.12.0":
            # unbind events to prevent new created (and queued) events
            self.widget.Bind(wx.EVT_PAINT, None)
            self.widget.Bind(wx.EVT_RIGHT_DOWN, None)
            self.widget.Bind(wx.EVT_LEFT_DOWN, None)
            self.widget.Bind(wx.EVT_MIDDLE_DOWN, None)
            self.widget.Bind(wx.EVT_ENTER_WINDOW, None)
            self.widget.Bind(wx.EVT_LEAVE_WINDOW, None)
            self.widget.Bind(wx.EVT_KEY_DOWN, None)
        compat.DestroyLater(self.widget)
        self.widget = None

        if misc.focused_widget is self:
            misc.set_focused_widget(None) 

def create_widget(self):
        if self.overlapped and self.parent._IS_GRIDBAG: return
        style = wx.FULL_REPAINT_ON_RESIZE
        if self.parent.CHILDREN in (-1, 1):  # e.g. Panel in a Frame
            size = self.parent.widget.GetClientSize()
        else:
            size = (20, 20)
        self.widget = wx.Window(self.parent_window.widget, -1, size=size, style=style)
        self.widget.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
        #self.widget.SetAutoLayout(True)
        self.widget.Bind(wx.EVT_PAINT, self.on_paint)
        self.widget.Bind(wx.EVT_ERASE_BACKGROUND, self.on_erase_background)
        self.widget.Bind(wx.EVT_RIGHT_DOWN, self.popup_menu)
        self.widget.Bind(wx.EVT_LEFT_DOWN, self.on_drop_widget)
        self.widget.Bind(wx.EVT_MIDDLE_DOWN, misc.exec_after(self.on_select_and_paste))
        self.widget.Bind(wx.EVT_ENTER_WINDOW, self.on_enter)
        self.widget.Bind(wx.EVT_LEAVE_WINDOW, self.on_leave)
        #self.widget.Bind(wx.EVT_CHAR_HOOK, misc.on_key_down_event)  # catch cursor keys   XXX still required? 

def __init__(self, parent, index, rgb, **kwargs):
        if 'title' in kwargs:
            title = kwargs['title']
        else:
            title = 'SPy Image'
#        wxFrame.__init__(self, parent, index, "SPy Frame")
#        wxScrolledWindow.__init__(self, parent, index, style = wxSUNKEN_BORDER)

        img = wx.EmptyImage(rgb.shape[0], rgb.shape[1])
        img = wx.EmptyImage(rgb.shape[1], rgb.shape[0])
        img.SetData(rgb.tostring())
        self.bmp = img.ConvertToBitmap()
        self.kwargs = kwargs
        wx.Frame.__init__(self, parent, index, title,
                          wx.DefaultPosition)
        self.SetClientSizeWH(self.bmp.GetWidth(), self.bmp.GetHeight())
        wx.EVT_PAINT(self, self.on_paint)
        wx.EVT_LEFT_DCLICK(self, self.left_double_click) 

def __init__(self, parent, capture, fps=24):
        wx.Panel.__init__(self, parent)

        self.SetDoubleBuffered(True)
        
        self.capture = capture
        ret, frame = self.capture.read()
        
        height, width = frame.shape[:2]
        parent.SetSize((width, height))
        frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        self.bmp = wx.BitmapFromBuffer(width, height, frame)

        self.timer = wx.Timer(self)
        self.timer.Start(1000./fps)

        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_TIMER, self.NextFrame) 

def __init__(self, parent=None):
        wx.Frame.__init__(
            self,
            parent,
            style=wx.NO_BORDER|wx.FRAME_NO_TASKBAR|wx.CLIP_CHILDREN
        )
        self.drawing = None
        self.displayNum = 0
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_LEFT_DCLICK, self.LeftDblClick)
        self.Bind(wx.EVT_KEY_DOWN, self.OnChar)
        self.Bind(wx.EVT_MOTION, self.ShowCursor)
        self.timer = None
        self.SetBackgroundColour((0, 0, 0)) 

def init_gl(self):
		print('creating Frame')
		self.window = wx.Frame ( parent=None, id=wx.ID_ANY, title=self.title,
			style=wx.DEFAULT_FRAME_STYLE|wx.WS_EX_PROCESS_IDLE )
		print('creating GLCanvas')
		self.canvas = glcanvas.GLCanvas ( self.window, glcanvas.WX_GL_RGBA )
		print('creating GLContext')
		self.context = glcanvas.GLContext(self.canvas)
		self.canvas.SetFocus()
		self.window.SetSize ( (self.renderer.window_size[0], self.renderer.window_size[1]) )
		print('showing Frame')
		self.window.Show(True)
		
		print('calling SetTopWindow')
		self.SetTopWindow(self.window)
		
		self.Bind ( wx.EVT_CHAR, self.OnChar )
		self.canvas.Bind ( wx.EVT_SIZE, self.OnCanvasSize )
		self.canvas.Bind ( wx.EVT_PAINT, self.OnCanvasPaint )
		
		wx.IdleEvent.SetMode ( wx.IDLE_PROCESS_SPECIFIED )
		self.Bind ( wx.EVT_IDLE, self.OnIdle )
		
		print('making context current')
		self.canvas.SetCurrent ( self.context )
		self.renderer.init_gl() 

def RefreshViewer(self):
        """Triggers EVT_PAINT event to refresh UI"""
        self.Refresh() 

def __init__(self, parent, camera, fps=15, flip=False):
        wx.Window.__init__(self, parent)

        # remember arguments
        self.camera = camera
        self.fps = fps
        self.flip = flip

        # get frame size
        ret_value, frame = self.camera.read()
        height, width = frame.shape[:2]

        # resize panel with camera image
        self.SetSize( (width, height) )
        #self.SetMinSize( (width, height) )
        
        # resize main window
        self.GetParent().GetParent().SetSize( (width, height+37) ) # wymaga poprawki aby nie trzeba bylo dawac +37
        #self.GetGrandParent().SetSize( (width, height+25) )
        #self.GetTopLevelParent().SetSize( (width, height+25) ) # wrong parent
        
        frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        
        if self.flip:
            frame = cv2.flip(frame, 1)

        # create bitmap with frame
        self.bmp = wx.BitmapFromBuffer(width, height, frame)

        # timer to refresh frames
        self.timer = wx.Timer(self)
        self.timer.Start(1000./fps)

        # add functions to events 
        self.Bind(wx.EVT_PAINT, self.OnPaint)   # run when it is needed
        self.Bind(wx.EVT_TIMER, self.NextFrame) # run by timer 

def __init__(self, parent, window, items=None):
        """
        Constructor
        @param parent: Parent wx.Window of DebugVariableText
        @param window: Reference to the Debug Variable Panel
        @param items: List of DebugVariableItem displayed by Viewer
        """
        DebugVariableViewer.__init__(self, window, items)

        wx.Panel.__init__(self, parent)
        # Set panel background colour
        self.SetBackgroundColour(wx.WHITE)
        # Define panel drop target
        self.SetDropTarget(DebugVariableTextDropTarget(self, window))

        # Bind events
        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
        self.Bind(wx.EVT_ENTER_WINDOW, self.OnEnter)
        self.Bind(wx.EVT_LEAVE_WINDOW, self.OnLeave)
        self.Bind(wx.EVT_SIZE, self.OnResize)
        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
        self.Bind(wx.EVT_PAINT, self.OnPaint)

        # Define panel min size for parent sizer layout
        self.SetMinSize(wx.Size(0, 25))

        # Add buttons to Viewer
        for bitmap, callback in [("force", self.OnForceButton),
                                 ("release", self.OnReleaseButton),
                                 ("delete_graph", self.OnCloseButton)]:
            self.Buttons.append(GraphButton(0, 0, bitmap, callback)) 

def __init__(self, parent, size):
        wx.Panel.__init__(self, parent, size=size)
        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
        self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
        self.Bind(wx.EVT_MOTION, self.OnMotion)
        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_SIZE, self.OnResize)

        self.ThumbPosition = 0.  # -1 <= ThumbPosition <= 1
        self.ThumbScrollingStartPos = None 

def __init__(self, parent, name):
        PPanel.__init__(self, parent, name)
        self.ID_TEXT_CTRL = wx.NewId()
        self.ID_BUTTON = wx.NewId()
        sizer = wx.BoxSizer()
        self.text = wx.TextCtrl(self, self.ID_TEXT_CTRL, size=(80,-1))
        sizer.Add(self.text, 0, wx.ALIGN_CENTER_VERTICAL | wx.TOP | wx.BOTTOM, 2)
        self.button = wx.Panel(self, self.ID_BUTTON, wx.DefaultPosition, wx.Size(20, 20))
        sizer.Add(self.button, 0, wx.ALIGN_CENTER_VERTICAL | wx.LEFT, 5)
        self.SetAutoLayout(True)
        self.SetSizerAndFit(sizer)
        self.textModified = False
        wx.EVT_PAINT(self.button, self.OnPaintButton)
        wx.EVT_TEXT(self, self.ID_TEXT_CTRL, self.OnChange)
        wx.EVT_LEFT_DOWN(self.button, self.OnLeftDown) 

def __init__(self, parent):
            wx.Panel.__init__(self, parent, -1, style=wx.FULL_REPAINT_ON_RESIZE)
            self.Bind(wx.EVT_PAINT, self.OnPaint)

            self.text = """This is Thisisareallylongwordtoseewhathappens the text to be drawn. It needs to be long to see if wrapping works.  to long words.
This is on new line by itself.

This should have a blank line in front of it but still wrap when we reach the edge.

The bottom of the red rectangle should be immediately below this."""
            self.font = wx.Font(12, wx.SWISS, wx.NORMAL, wx.NORMAL, faceName="Gill Sans") 

def bind_events(self):
        self.Bind(wx.EVT_ERASE_BACKGROUND, lambda e : None)
        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.Bind(wx.EVT_PAINT, self.OnPaint) 

def __init__(self, parent, bitmap=None, *a, **k):
        wx.Window.__init__(self, parent, *a, **k)
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.bitmap = None
        if bitmap:
            self.SetBitmap(bitmap)
        else:
            self.SetSize((0, 0)) 

def __init__(self, parent, id=wx.ID_ANY, label='', dotify=False):
        wx.StaticText.__init__(self, parent, id, label)
        self.label = label
        self._string = self.label
        if dotify:
            self.Bind(wx.EVT_PAINT, self.DotifyOnPaint) 

def _on_paint(self, event):
        """
            This method draws the camera frame stored in the bitmap self.bmp
            onto the panel self.pnl. Make sure self.pnl exists and is at least
            the size of the camera frame.
            This method is called whenever an event wx.EVT_PAINT is triggered.
        """
        # read and draw buffered bitmap
        deviceContext = wx.BufferedPaintDC(self.pnl)
        deviceContext.DrawBitmap(self.bmp, 0, 0) 

def _on_next_frame(self, event):
        """
            This method captures a new frame from the camera (or capture
            device) and sends an RGB version to the method self.process_frame.
            The latter will then apply task-specific post-processing and return
            an image to be displayed.
        """
        success, frame = self._acquire_frame()
        if success:
            # process current frame
            frame = self._process_frame(cv2.cvtColor(frame, cv2.COLOR_BGR2RGB))

            # update buffer and paint (EVT_PAINT triggered by Refresh)
            self.bmp.CopyFromBuffer(frame)
            self.Refresh(eraseBackground=False) 

def _create_base_layout(self):
        """Create generic layout

            This method sets up a basic layout that is common to all GUIs, such
            as a live stream of the camera (capture device). This stream is
            assigned to the variable self.pnl, and arranged in a vertical
            layout self.panels_vertical.

            Additional layout elements can be added below the livestream by
            means of the method self.panels_vertical.Add.
        """
        # set up video stream
        self.pnl = wx.Panel(self, size=(self.imgWidth, self.imgHeight))
        self.pnl.SetBackgroundColour(wx.BLACK)
        self.pnl.Bind(wx.EVT_PAINT, self._on_paint)

        # display the button layout beneath the video stream
        self.panels_vertical = wx.BoxSizer(wx.VERTICAL)
        self.panels_vertical.Add(self.pnl, 1, flag=wx.EXPAND | wx.TOP,
                                 border=1)

        # allow for custom layout modifications
        self._create_custom_layout()

        # round off the layout by expanding and centering
        self.SetMinSize((self.imgWidth, self.imgHeight))
        self.SetSizer(self.panels_vertical)
        self.Centre() 

def __init__(self, parent):
        super(View, self).__init__(parent)
        self.SetBackgroundStyle(wx.BG_STYLE_CUSTOM)
        self.Bind(wx.EVT_SIZE, self.on_size)
        self.Bind(wx.EVT_PAINT, self.on_paint)
        self.Bind(wx.EVT_CHAR_HOOK, self.on_char)
        self.index = -1
        self.weights = {}
        self.model = None
        self.bitmap = None
        wx.CallAfter(self.next) 

def __init__(
        self,
        parent,
        id=wx.ID_ANY,
        pos=wx.DefaultPosition,
        size=wx.DefaultSize,
        style=wx.NO_FULL_REPAINT_ON_RESIZE,
    ):
        """Initialize the canvas.

        parent  reference to 'parent' widget
        id      the unique widget ID
        pos     canvas position
        size    canvas size
        style   wxPython style
        """

        wx.Panel.__init__(self, parent, id, pos, size, style)

        # Bind events
        self.Bind(wx.EVT_PAINT, self.OnPaint)
        self.Bind(wx.EVT_SIZE, self.OnSize)

        # Disable background erasing (flicker-licious)
        def disable_event(*pargs, **kwargs):
            pass  # the sauce, please

        self.Bind(wx.EVT_ERASE_BACKGROUND, disable_event)

        # set callback upon onSize event
        self.onSizeCallback = None 

def OnGraphicsWindowPaint(self, event):
        """EVT_PAINT handler"""

        self.DrawView()
        event.Skip()