+# 11/12/2003 - Jeff Grimmett (grimmtooth@softhome.net)
+#
+# o Updated for wx namespace
+# o Rudimentary overview doc added.
+#
-from wxPython.wx import *
+import wx
+
+import images
+
+BUFFERED = 1
#---------------------------------------------------------------------------
-class MyCanvas(wxScrolledWindow):
- def __init__(self, parent, id = -1, size = wxDefaultSize):
- wxScrolledWindow.__init__(self, parent, id, wxPoint(0, 0), size, wxSUNKEN_BORDER)
+class MyCanvas(wx.ScrolledWindow):
+ def __init__(self, parent, id = -1):
+ wx.ScrolledWindow.__init__(self, parent, id, (0, 0), size=size, style=wx.SUNKEN_BORDER)
self.lines = []
self.maxWidth = 1000
self.maxHeight = 1000
-
- self.SetBackgroundColour(wxNamedColor("WHITE"))
- EVT_LEFT_DOWN(self, self.OnLeftButtonEvent)
- EVT_LEFT_UP(self, self.OnLeftButtonEvent)
- EVT_MOTION(self, self.OnLeftButtonEvent)
-
- EVT_PAINT(self, self.OnPaint)
-
-
- self.SetCursor(wxStockCursor(wxCURSOR_PENCIL))
- bmp = wxBitmap('bitmaps/test2.bmp', wxBITMAP_TYPE_BMP)
- mask = wxMaskColour(bmp, wxBLUE)
+ self.x = self.y = 0
+ self.curLine = []
+ self.drawing = False
+
+ self.SetBackgroundColour("WHITE")
+ self.SetCursor(wx.StockCursor(wx.CURSOR_PENCIL))
+ bmp = images.getTest2Bitmap()
+ mask = wx.MaskColour(bmp, wx.BLUE)
bmp.SetMask(mask)
self.bmp = bmp
self.SetScrollbars(20, 20, self.maxWidth/20, self.maxHeight/20)
+ if BUFFERED:
+ # Initialize the buffer bitmap. No real DC is needed at this point.
+ self.buffer = wx.EmptyBitmap(self.maxWidth, self.maxHeight)
+ dc = wx.BufferedDC(None, self.buffer)
+ dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
+ dc.Clear()
+ self.DoDrawing(dc)
+
+ self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftButtonEvent)
+ self.Bind(wx.EVT_LEFT_UP, self.OnLeftButtonEvent)
+ self.Bind(wx.EVT_MOTION, self.OnLeftButtonEvent)
+ self.Bind(wx.EVT_PAINT, self.OnPaint)
+
+
def getWidth(self):
return self.maxWidth
def OnPaint(self, event):
- dc = wxPaintDC(self)
- self.PrepareDC(dc)
- self.DoDrawing(dc)
+ if BUFFERED:
+ # Create a buffered paint DC. It will create the real
+ # wx.PaintDC and then blit the bitmap to it when dc is
+ # deleted. Since we don't need to draw anything else
+ # here that's all there is to it.
+ dc = wx.BufferedPaintDC(self, self.buffer)
+ else:
+ dc = wx.PaintDC(self)
+ self.PrepareDC(dc)
+ # since we're not buffering in this case, we have to
+ # paint the whole window, potentially very time consuming.
+ self.DoDrawing(dc)
- def DoDrawing(self, dc):
+ def DoDrawing(self, dc, printing=False):
dc.BeginDrawing()
- #pen1 = wxPen(wxNamedColour('RED'))
- dc.SetPen(wxPen(wxNamedColour('RED')))
- dc.DrawRectangle(5, 5, 50, 50)
+ dc.SetPen(wx.Pen('RED'))
+ dc.DrawRectangle((5, 5), (50, 50))
- dc.SetBrush(wxLIGHT_GREY_BRUSH)
- dc.SetPen(wxPen(wxNamedColour('BLUE'), 4))
- dc.DrawRectangle(15, 15, 50, 50)
+ dc.SetBrush(wx.LIGHT_GREY_BRUSH)
+ dc.SetPen(wx.Pen('BLUE', 4))
+ dc.DrawRectangle((15, 15), (50, 50))
- #font = wxFont(14, wxSWISS, wxNORMAL, wxNORMAL)
- dc.SetFont(wxFont(14, wxSWISS, wxNORMAL, wxNORMAL))
- dc.SetTextForeground(wxColour(0xFF, 0x20, 0xFF))
+ dc.SetFont(wx.Font(14, wx.SWISS, wx.NORMAL, wx.NORMAL))
+ dc.SetTextForeground(wx.Colour(0xFF, 0x20, 0xFF))
te = dc.GetTextExtent("Hello World")
- dc.DrawText("Hello World", 60, 65)
+ dc.DrawText("Hello World", (60, 65))
- dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4))
- dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1])
+ dc.SetPen(wx.Pen('VIOLET', 4))
+ dc.DrawLine((5, 65+te[1]), (60+te[0], 65+te[1]))
lst = [(100,110), (150,110), (150,160), (100,160)]
dc.DrawLines(lst, -60)
- dc.SetPen(wxGREY_PEN)
+ dc.SetPen(wx.GREY_PEN)
dc.DrawPolygon(lst, 75)
- dc.SetPen(wxGREEN_PEN)
+ dc.SetPen(wx.GREEN_PEN)
dc.DrawSpline(lst+[(100,100)])
- dc.DrawBitmap(self.bmp, 200, 20, true)
- dc.SetTextForeground(wxColour(0, 0xFF, 0x80))
- dc.DrawText("a bitmap", 200, 85)
+ dc.DrawBitmap(self.bmp, (200, 20), True)
+ dc.SetTextForeground(wx.Colour(0, 0xFF, 0x80))
+ dc.DrawText("a bitmap", (200, 85))
- font = wxFont(20, wxSWISS, wxNORMAL, wxNORMAL)
- dc.SetFont(font)
- dc.SetTextForeground(wxBLACK)
- for a in range(0, 360, 45):
- dc.DrawRotatedText("Rotated text...", 300, 300, a)
+## dc.SetFont(wx.Font(14, wx.SWISS, wx.NORMAL, wx.NORMAL))
+## dc.SetTextForeground("BLACK")
+## dc.DrawText("TEST this STRING", (10, 200))
+## print dc.GetFullTextExtent("TEST this STRING")
- dc.SetPen(wxTRANSPARENT_PEN)
- dc.SetBrush(wxBLUE_BRUSH)
- dc.DrawRectangle(50,500,50,50)
- dc.DrawRectangle(100,500,50,50)
+ font = wx.Font(20, wx.SWISS, wx.NORMAL, wx.NORMAL)
+ dc.SetFont(font)
+ dc.SetTextForeground(wx.BLACK)
- dc.SetPen(wxPen(wxNamedColour('RED')))
- dc.DrawEllipticArc(200, 500, 50, 75, 0, 90)
+ for a in range(0, 360, 45):
+ dc.DrawRotatedText("Rotated text...", (300, 300), a)
+
+ dc.SetPen(wx.TRANSPARENT_PEN)
+ dc.SetBrush(wx.BLUE_BRUSH)
+ dc.DrawRectangle((50,500),(50,50))
+ dc.DrawRectangle((100,500),(50,50))
+
+ dc.SetPen(wx.Pen('RED'))
+ dc.DrawEllipticArc((200, 500), (50, 75), 0, 90)
+
+ if not printing:
+ # This has troubles when used on a print preview in wxGTK,
+ # probably something to do with the pen styles and the scaling
+ # it does...
+ y = 20
+
+ for style in [wx.DOT, wx.LONG_DASH, wx.SHORT_DASH, wx.DOT_DASH, wx.USER_DASH]:
+ pen = wx.Pen("DARK ORCHID", 1, style)
+ if style == wx.USER_DASH:
+ pen.SetCap(wx.CAP_BUTT)
+ pen.SetDashes([1,2])
+ pen.SetColour("RED")
+ dc.SetPen(pen)
+ dc.DrawLine((300, y), (400, y))
+ y = y + 10
+
+ dc.SetBrush(wx.TRANSPARENT_BRUSH)
+ dc.SetPen(wx.Pen(wx.Colour(0xFF, 0x20, 0xFF), 1, wx.SOLID))
+ dc.DrawRectangle((450, 50), (100, 100))
+ old_pen = dc.GetPen()
+ new_pen = wx.Pen("BLACK", 5)
+ dc.SetPen(new_pen)
+ dc.DrawRectangle((470, 70), (60, 60))
+ dc.SetPen(old_pen)
+ dc.DrawRectangle((490, 90), (20, 20))
self.DrawSavedLines(dc)
dc.EndDrawing()
-
def DrawSavedLines(self, dc):
- dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
+ dc.SetPen(wx.Pen('MEDIUM FOREST GREEN', 4))
+
for line in self.lines:
for coords in line:
apply(dc.DrawLine, coords)
def OnLeftButtonEvent(self, event):
if event.LeftDown():
+ self.SetFocus()
self.SetXY(event)
self.curLine = []
self.CaptureMouse()
+ self.drawing = True
+
+ elif event.Dragging() and self.drawing:
+ if BUFFERED:
+ # If doing buffered drawing, create the buffered DC, giving it
+ # it a real DC to blit to when done.
+ cdc = wx.ClientDC(self)
+ self.PrepareDC(cdc)
+ dc = wx.BufferedDC(cdc, self.buffer)
+ else:
+ dc = wx.ClientDC(self)
+ self.PrepareDC(dc)
- elif event.Dragging():
- dc = wxClientDC(self)
- self.PrepareDC(dc)
dc.BeginDrawing()
- dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4))
- coords = (self.x, self.y) + self.ConvertEventCoords(event)
+ dc.SetPen(wx.Pen('MEDIUM FOREST GREEN', 4))
+ coords = [(self.x, self.y) , self.ConvertEventCoords(event)]
self.curLine.append(coords)
apply(dc.DrawLine, coords)
self.SetXY(event)
dc.EndDrawing()
- elif event.LeftUp():
+
+ elif event.LeftUp() and self.drawing:
self.lines.append(self.curLine)
self.curLine = []
self.ReleaseMouse()
+ self.drawing = False
+
+
+## This is an example of what to do for the EVT_MOUSEWHEEL event,
+## but since wxScrolledWindow does this already it's not
+## necessary to do it ourselves. You would need to add an event table
+## entry to __init__() to direct wheelmouse events to this handler.
+
+## wheelScroll = 0
+## def OnWheel(self, evt):
+## delta = evt.GetWheelDelta()
+## rot = evt.GetWheelRotation()
+## linesPer = evt.GetLinesPerAction()
+## print delta, rot, linesPer
+## ws = self.wheelScroll
+## ws = ws + rot
+## lines = ws / delta
+## ws = ws - lines * delta
+## self.wheelScroll = ws
+## if lines != 0:
+## lines = lines * linesPer
+## vsx, vsy = self.GetViewStart()
+## scrollTo = vsy - lines
+## self.Scroll(-1, scrollTo)
#---------------------------------------------------------------------------
+overview = """
+<html>
+<body>
+The wx.ScrolledWindow class manages scrolling for its client area, transforming the
+coordinates according to the scrollbar positions, and setting the scroll positions,
+thumb sizes and ranges according to the area in view.
+</body>
+</html>
+"""
+if __name__ == '__main__':
+ import sys,os
+ import run
+ run.main(['', os.path.basename(sys.argv[0])])
-
-
-
-
-
-
-
-overview = """\
-"""
projects / wxWidgets.git / blobdiff