gxlib
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장길석님이 작성하신 framebuffer 용 초소형 그래픽 라이브러리
install in i386
dependency
- zlib 라이브러리 설치 : zlib1g-dev
- jpeg 라이브러리 설치 : libjpeg62-dev
- png 라이브러리 설치 : libpng12-dev
$ sudo apt-get install zlib1g-dev libjpeg62-dev libpng12-dev
dep in win32
mmap practice
import tempfile fbfp = tempfile.NamedTemporaryFile(bufsize = 640*480*3) fbfp.write('\x00'*(640*480*3)) import mmap fbmap = mmap.mmap(fbfp.fileno(), 0)
wxScrolledWindow practice
import wx import images BUFFERED = 1 #--------------------------------------------------------------------------- class MyCanvas(wx.ScrolledWindow): def __init__(self, parent, id = -1, size = wx.DefaultSize): wx.ScrolledWindow.__init__(self, parent, id, (0, 0), size=size, style=wx.SUNKEN_BORDER) self.lines = [] self.maxWidth = 1000 self.maxHeight = 1000 self.x = self.y = 0 self.curLine = [] self.drawing = False self.SetBackgroundColour("WHITE") self.SetCursor(wx.StockCursor(wx.CURSOR_PENCIL)) bmp = images.Test2.GetBitmap() mask = wx.Mask(bmp, wx.BLUE) bmp.SetMask(mask) self.bmp = bmp self.SetVirtualSize((self.maxWidth, self.maxHeight)) self.SetScrollRate(20,20) 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 getHeight(self): return self.maxHeight def OnPaint(self, event): 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, wx.BUFFER_VIRTUAL_AREA) 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, printing=False): dc.BeginDrawing() dc.SetPen(wx.Pen('RED')) dc.DrawRectangle(5, 5, 50, 50) dc.SetBrush(wx.LIGHT_GREY_BRUSH) dc.SetPen(wx.Pen('BLUE', 4)) dc.DrawRectangle(15, 15, 50, 50) 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.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(wx.GREY_PEN) dc.DrawPolygon(lst, 75) dc.SetPen(wx.GREEN_PEN) dc.DrawSpline(lst+[(100,100)]) dc.DrawBitmap(self.bmp, 200, 20, True) dc.SetTextForeground(wx.Colour(0, 0xFF, 0x80)) dc.DrawText("a bitmap", 200, 85) ## 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") font = wx.Font(20, wx.SWISS, wx.NORMAL, wx.NORMAL) dc.SetFont(font) dc.SetTextForeground(wx.BLACK) 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) dc.GradientFillLinear((20, 260, 50, 50), "red", "blue") dc.GradientFillConcentric((20, 325, 50, 50), "red", "blue", (25,25)) self.DrawSavedLines(dc) dc.EndDrawing() def DrawSavedLines(self, dc): dc.SetPen(wx.Pen('MEDIUM FOREST GREEN', 4)) for line in self.lines: for coords in line: apply(dc.DrawLine, coords) def SetXY(self, event): self.x, self.y = self.ConvertEventCoords(event) def ConvertEventCoords(self, event): newpos = self.CalcUnscrolledPosition(event.GetX(), event.GetY()) return newpos 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 we'll just update the # buffer here and then refresh that portion of the # window, then that portion of the buffer will be # redrawn in the EVT_PAINT handler. dc = wx.BufferedDC(None, self.buffer) else: # otherwise we'll draw directly to a wx.ClientDC dc = wx.ClientDC(self) self.PrepareDC(dc) dc.SetPen(wx.Pen('MEDIUM FOREST GREEN', 4)) coords = (self.x, self.y) + self.ConvertEventCoords(event) self.curLine.append(coords) dc.DrawLine(*coords) self.SetXY(event) if BUFFERED: # figure out what part of the window to refresh x1,y1, x2,y2 = dc.GetBoundingBox() x1,y1 = self.CalcScrolledPosition(x1, y1) x2,y2 = self.CalcScrolledPosition(x2, y2) # make a rectangle rect = wx.Rect() rect.SetTopLeft((x1,y1)) rect.SetBottomRight((x2,y2)) rect.Inflate(2,2) # refresh it self.RefreshRect(rect) 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 wx.ScrolledWindow 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) #--------------------------------------------------------------------------- def runTest(frame, nb, log): win = MyCanvas(nb) return win #--------------------------------------------------------------------------- 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])] + sys.argv[1:])
- wxDC::DrawBitmap
- wxBitmapFromBits(bits, width, height, depth=-1)
references
- fbe - frame buffer emulator
bterm
$ sudo apt-get install bogl-bterm $ sudo apt-get install libbogl-dev ... $ bdftobogl -b gulim.bdf >gulim.bgf $ bterm -f gulim.bgf bogl: opening /dev/fb0: No such file or directory
gxlib.1251104882.txt.gz · Last modified: 2013/08/03 05:04 (external edit)