示例#1
0
文件: screen.go 项目: jmptrader/exp
func (s *screenImpl) NewTexture(size image.Point) (screen.Texture, error) {
	w, h := int64(size.X), int64(size.Y)
	if w < 0 || maxShmSide < w || h < 0 || maxShmSide < h || maxShmSize < 4*w*h {
		return nil, fmt.Errorf("x11driver: invalid texture size %v", size)
	}

	xm, err := xproto.NewPixmapId(s.xc)
	if err != nil {
		return nil, fmt.Errorf("x11driver: xproto.NewPixmapId failed: %v", err)
	}
	xp, err := render.NewPictureId(s.xc)
	if err != nil {
		return nil, fmt.Errorf("x11driver: xproto.NewPictureId failed: %v", err)
	}

	t := &textureImpl{
		s:    s,
		size: size,
		xm:   xm,
		xp:   xp,
	}

	xproto.CreatePixmap(s.xc, textureDepth, xm, xproto.Drawable(s.window32), uint16(w), uint16(h))
	render.CreatePicture(s.xc, xp, xproto.Drawable(xm), s.pictformat32, 0, nil)
	render.SetPictureFilter(s.xc, xp, uint16(len("bilinear")), "bilinear", nil)
	return t, nil
}
示例#2
0
文件: screen.go 项目: jmptrader/exp
func (s *screenImpl) NewWindow(opts *screen.NewWindowOptions) (screen.Window, error) {
	// TODO: look at opts.
	const width, height = 1024, 768

	xw, err := xproto.NewWindowId(s.xc)
	if err != nil {
		return nil, fmt.Errorf("x11driver: xproto.NewWindowId failed: %v", err)
	}
	xg, err := xproto.NewGcontextId(s.xc)
	if err != nil {
		return nil, fmt.Errorf("x11driver: xproto.NewGcontextId failed: %v", err)
	}
	xp, err := render.NewPictureId(s.xc)
	if err != nil {
		return nil, fmt.Errorf("x11driver: render.NewPictureId failed: %v", err)
	}
	pictformat := render.Pictformat(0)
	switch s.xsi.RootDepth {
	default:
		return nil, fmt.Errorf("x11driver: unsupported root depth %d", s.xsi.RootDepth)
	case 24:
		pictformat = s.pictformat24
	case 32:
		pictformat = s.pictformat32
	}

	w := &windowImpl{
		s:       s,
		xw:      xw,
		xg:      xg,
		xp:      xp,
		pump:    pump.Make(),
		xevents: make(chan xgb.Event),
	}

	s.mu.Lock()
	s.windows[xw] = w
	s.mu.Unlock()

	xproto.CreateWindow(s.xc, s.xsi.RootDepth, xw, s.xsi.Root,
		0, 0, width, height, 0,
		xproto.WindowClassInputOutput, s.xsi.RootVisual,
		xproto.CwEventMask,
		[]uint32{0 |
			xproto.EventMaskKeyPress |
			xproto.EventMaskKeyRelease |
			xproto.EventMaskButtonPress |
			xproto.EventMaskButtonRelease |
			xproto.EventMaskPointerMotion |
			xproto.EventMaskExposure |
			xproto.EventMaskStructureNotify |
			xproto.EventMaskFocusChange,
		},
	)
	s.setProperty(xw, s.atomWMProtocols, s.atomWMDeleteWindow, s.atomWMTakeFocus)
	xproto.CreateGC(s.xc, xg, xproto.Drawable(xw), 0, nil)
	render.CreatePicture(s.xc, xp, xproto.Drawable(xw), pictformat, 0, nil)
	xproto.MapWindow(s.xc, xw)

	return w, nil
}