git.saurik.com Git - wxWidgets.git/blame_incremental - wxPython/demo/wxScrolledWindow.py

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Commit	Line	Data
	1
	2	from wxPython.wx import *
	3
	4	import images
	5
	6	#---------------------------------------------------------------------------
	7
	8	class MyCanvas(wxScrolledWindow):
	9	def __init__(self, parent, id = -1, size = wxDefaultSize):
	10	wxScrolledWindow.__init__(self, parent, id, wxPoint(0, 0), size, wxSUNKEN_BORDER)
	11
	12	self.lines = []
	13	self.maxWidth = 1000
	14	self.maxHeight = 1000
	15
	16	self.SetBackgroundColour(wxNamedColor("WHITE"))
	17	EVT_LEFT_DOWN(self, self.OnLeftButtonEvent)
	18	EVT_LEFT_UP(self, self.OnLeftButtonEvent)
	19	EVT_MOTION(self, self.OnLeftButtonEvent)
	20
	21	EVT_PAINT(self, self.OnPaint)
	22
	23
	24	self.SetCursor(wxStockCursor(wxCURSOR_PENCIL))
	25	bmp = images.getTest2Bitmap()
	26	mask = wxMaskColour(bmp, wxBLUE)
	27	bmp.SetMask(mask)
	28	self.bmp = bmp
	29
	30	self.SetScrollbars(20, 20, self.maxWidth/20, self.maxHeight/20)
	31
	32	def getWidth(self):
	33	return self.maxWidth
	34
	35	def getHeight(self):
	36	return self.maxHeight
	37
	38
	39	def OnPaint(self, event):
	40	dc = wxPaintDC(self)
	41	self.PrepareDC(dc)
	42	self.DoDrawing(dc)
	43
	44
	45	def DoDrawing(self, dc):
	46	dc.BeginDrawing()
	47	dc.SetPen(wxPen(wxNamedColour('RED')))
	48	dc.DrawRectangle(5, 5, 50, 50)
	49
	50	dc.SetBrush(wxLIGHT_GREY_BRUSH)
	51	dc.SetPen(wxPen(wxNamedColour('BLUE'), 4))
	52	dc.DrawRectangle(15, 15, 50, 50)
	53
	54	dc.SetFont(wxFont(14, wxSWISS, wxNORMAL, wxNORMAL))
	55	dc.SetTextForeground(wxColour(0xFF, 0x20, 0xFF))
	56	te = dc.GetTextExtent("Hello World")
	57	dc.DrawText("Hello World", 60, 65)
	58
	59	dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4))
	60	dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1])
	61
	62	lst = [(100,110), (150,110), (150,160), (100,160)]
	63	dc.DrawLines(lst, -60)
	64	dc.SetPen(wxGREY_PEN)
	65	dc.DrawPolygon(lst, 75)
	66	dc.SetPen(wxGREEN_PEN)
	67	dc.DrawSpline(lst+[(100,100)])
	68
	69	dc.DrawBitmap(self.bmp, 200, 20, true)
	70	dc.SetTextForeground(wxColour(0, 0xFF, 0x80))
	71	dc.DrawText("a bitmap", 200, 85)
	72
	73	font = wxFont(20, wxSWISS, wxNORMAL, wxNORMAL)
	74	dc.SetFont(font)
	75	dc.SetTextForeground(wxBLACK)
	76	for a in range(0, 360, 45):
	77	dc.DrawRotatedText("Rotated text...", 300, 300, a)
	78
	79	dc.SetPen(wxTRANSPARENT_PEN)
	80	dc.SetBrush(wxBLUE_BRUSH)
	81	dc.DrawRectangle(50,500,50,50)
	82	dc.DrawRectangle(100,500,50,50)
	83
	84	dc.SetPen(wxPen(wxNamedColour('RED')))
	85	dc.DrawEllipticArc(200, 500, 50, 75, 0, 90)
	86
	87	self.DrawSavedLines(dc)
	88	dc.EndDrawing()
	89
	90
	91
	92	def DrawSavedLines(self, dc):
	93	dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
	94	for line in self.lines:
	95	for coords in line:
	96	apply(dc.DrawLine, coords)
	97
	98
	99	def SetXY(self, event):
	100	self.x, self.y = self.ConvertEventCoords(event)
	101
	102	def ConvertEventCoords(self, event):
	103	xView, yView = self.GetViewStart()
	104	xDelta, yDelta = self.GetScrollPixelsPerUnit()
	105	return (event.GetX() + (xView * xDelta),
	106	event.GetY() + (yView * yDelta))
	107
	108	def OnLeftButtonEvent(self, event):
	109	if event.LeftDown():
	110	self.SetXY(event)
	111	self.curLine = []
	112	self.CaptureMouse()
	113
	114	elif event.Dragging():
	115	dc = wxClientDC(self)
	116	self.PrepareDC(dc)
	117	dc.BeginDrawing()
	118	dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
	119	coords = (self.x, self.y) + self.ConvertEventCoords(event)
	120	self.curLine.append(coords)
	121	apply(dc.DrawLine, coords)
	122	self.SetXY(event)
	123	dc.EndDrawing()
	124
	125	elif event.LeftUp():
	126	self.lines.append(self.curLine)
	127	self.curLine = []
	128	self.ReleaseMouse()
	129
	130
	131	## This is an example of what to do for the EVT_MOUSEWHEEL event,
	132	## but since wxScrolledWindow does this already it's not
	133	## necessary to do it ourselves.
	134
	135	## wheelScroll = 0
	136	## def OnWheel(self, evt):
	137	## delta = evt.GetWheelDelta()
	138	## rot = evt.GetWheelRotation()
	139	## linesPer = evt.GetLinesPerAction()
	140	## ws = self.wheelScroll
	141	## ws = ws + rot
	142	## lines = ws / delta
	143	## ws = ws - lines * delta
	144	## self.wheelScroll = ws
	145	## if lines != 0:
	146	## lines = lines * linesPer
	147	## vsx, vsy = self.GetViewStart()
	148	## scrollTo = vsy - lines
	149	## self.Scroll(-1, scrollTo)
	150
	151	#---------------------------------------------------------------------------
	152
	153	def runTest(frame, nb, log):
	154	win = MyCanvas(nb)
	155	return win
	156
	157	#---------------------------------------------------------------------------
	158
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	170
	171	overview = """\
	172	"""