func NewDisplay(width, height, border, heading int, name string) (*Display, error) {
d := new(Display)
d.w = float64(width)
d.h = float64(height)
d.bord = float64(border)
d.head = float64(heading)
X, err := xgbutil.NewConn()
if err != nil {
return nil, err
}
keybind.Initialize(X)
d.ximg = xgraphics.New(X, image.Rect(
0,
0,
border*2+width,
border*2+heading+height))
err = d.ximg.CreatePixmap()
if err != nil {
return nil, err
}
painter := NewXimgPainter(d.ximg)
d.gc = draw2d.NewGraphicContextWithPainter(d.ximg, painter)
d.gc.Save()
d.gc.SetStrokeColor(color.White)
d.gc.SetFillColor(color.White)
d.gc.Clear()
d.wid = d.ximg.XShowExtra(name, true)
d.x = X
go func() {
xevent.Main(X)
}()
return d, nil
}
// NewImage returns a new image canvas
// that draws to the given image. The
// minimum point of the given image
// should probably be 0,0.
func NewImage(img draw.Image, name string) (*XImgCanvas, error) {
w := float64(img.Bounds().Max.X - img.Bounds().Min.X)
h := float64(img.Bounds().Max.Y - img.Bounds().Min.Y)
X, err := xgbutil.NewConn()
if err != nil {
return nil, err
}
keybind.Initialize(X)
ximg := xgraphics.New(X, image.Rect(0, 0, int(w), int(h)))
err = ximg.CreatePixmap()
if err != nil {
return nil, err
}
painter := NewXimgPainter(ximg)
gc := draw2d.NewGraphicContextWithPainter(ximg, painter)
gc.SetDPI(dpi)
gc.Scale(1, -1)
gc.Translate(0, -h)
wid := ximg.XShowExtra(name, true)
go func() {
xevent.Main(X)
}()
c := &XImgCanvas{
gc: gc,
w: vg.Inches(w / dpi),
h: vg.Inches(h / dpi),
color: []color.Color{color.Black},
x: X,
ximg: ximg,
wid: wid,
}
vg.Initialize(c)
return c, nil
}
func NewGraphicContext(img draw.Image) *draw2d.ImageGraphicContext {
return draw2d.NewGraphicContextWithPainter(img, NewDIBPainter(img.(*win.DIB)))
}