X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0569df0fc965c911275f9015e1774b37a7f8f064..c354beeafacc20831ce76e266703d07f27e826c7:/wxPython/demo/wxScrolledWindow.py?ds=inline diff --git a/wxPython/demo/wxScrolledWindow.py b/wxPython/demo/wxScrolledWindow.py index c772f2ed66..ad1fa7beca 100644 --- a/wxPython/demo/wxScrolledWindow.py +++ b/wxPython/demo/wxScrolledWindow.py @@ -1,6 +1,10 @@ from wxPython.wx import * +import images + +BUFFERED = 1 + #--------------------------------------------------------------------------- class MyCanvas(wxScrolledWindow): @@ -10,23 +14,33 @@ class MyCanvas(wxScrolledWindow): self.lines = [] self.maxWidth = 1000 self.maxHeight = 1000 + self.x = self.y = 0 + self.curLine = [] + self.drawing = false - self.SetBackgroundColour(wxNamedColor("WHITE")) + self.SetBackgroundColour("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) + bmp = images.getTest2Bitmap() mask = wxMaskColour(bmp, wxBLUE) 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 = wxEmptyBitmap(self.maxWidth, self.maxHeight) + dc = wxBufferedDC(None, self.buffer) + dc.SetBackground(wxBrush(self.GetBackgroundColour())) + dc.Clear() + self.DoDrawing(dc) + + def getWidth(self): return self.maxWidth @@ -35,28 +49,35 @@ class MyCanvas(wxScrolledWindow): 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 + # wxPaintDC 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 = wxBufferedPaintDC(self, self.buffer) + else: + dc = wxPaintDC(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): dc.BeginDrawing() - #pen1 = wxPen(wxNamedColour('RED')) - dc.SetPen(wxPen(wxNamedColour('RED'))) + dc.SetPen(wxPen('RED')) dc.DrawRectangle(5, 5, 50, 50) dc.SetBrush(wxLIGHT_GREY_BRUSH) - dc.SetPen(wxPen(wxNamedColour('BLUE'), 4)) + dc.SetPen(wxPen('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)) te = dc.GetTextExtent("Hello World") dc.DrawText("Hello World", 60, 65) - dc.SetPen(wxPen(wxNamedColour('VIOLET'), 4)) + dc.SetPen(wxPen('VIOLET', 4)) dc.DrawLine(5, 65+te[1], 60+te[0], 65+te[1]) lst = [(100,110), (150,110), (150,160), (100,160)] @@ -81,16 +102,35 @@ class MyCanvas(wxScrolledWindow): dc.DrawRectangle(50,500,50,50) dc.DrawRectangle(100,500,50,50) - dc.SetPen(wxPen(wxNamedColour('RED'))) + dc.SetPen(wxPen('RED')) dc.DrawEllipticArc(200, 500, 50, 75, 0, 90) + y = 20 + for style in [wxDOT, wxLONG_DASH, wxSHORT_DASH, wxDOT_DASH, wxUSER_DASH]: + pen = wxPen("DARK ORCHID", 1, style) + if style == wxUSER_DASH: + pen.SetDashes([1, 2, 3, 4, 5, 6, 7, 8]) + pen.SetColour("RED") + dc.SetPen(pen) + dc.DrawLine(300, y, 400, y) + y = y + 10 + + dc.SetBrush(wxTRANSPARENT_BRUSH) + dc.SetPen(wxPen(wxColour(0xFF, 0x20, 0xFF), 1, wxSOLID)) + dc.DrawRectangle(450, 50, 100, 100) + old_pen = dc.GetPen() + new_pen = wxPen("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(wxPen('MEDIUM FOREST GREEN', 4)) for line in self.lines: for coords in line: apply(dc.DrawLine, coords) @@ -110,22 +150,54 @@ class MyCanvas(wxScrolledWindow): 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 = wxClientDC(self) + self.PrepareDC(cdc) + dc = wxBufferedDC(cdc, self.buffer) + else: + dc = wxClientDC(self) + self.PrepareDC(dc) - elif event.Dragging(): - dc = wxClientDC(self) - self.PrepareDC(dc) dc.BeginDrawing() - dc.SetPen(wxPen(wxNamedColour('MEDIUM FOREST GREEN'), 4)) + dc.SetPen(wxPen('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. + +## wheelScroll = 0 +## def OnWheel(self, evt): +## delta = evt.GetWheelDelta() +## rot = evt.GetWheelRotation() +## linesPer = evt.GetLinesPerAction() +## 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) #---------------------------------------------------------------------------