Пример #1
0
func drawBorders(c *renderData, ctx *dom.CanvasRenderingContext2D, x, y int) {
	// 2 wide borders(4 on edge)
	ctx.FillStyle = "black"
	cell, _ := c.maze.GetRoom(x, y)
	if cell.Walls.Top {
		height := 2
		if y == 0 {
			height = 4
		}
		ctx.FillRect(x*cellWidth-2, y*cellWidth, cellWidth+4, height)
	}
	if cell.Walls.Bottom {
		height := 2
		if y == c.maze.Height()-1 {
			height = 4
		}
		ctx.FillRect(x*cellWidth-2, y*cellWidth+(cellWidth-height), cellWidth+4, height)
	}
	if cell.Walls.Left {
		width := 2
		if x == 0 {
			width = 4
		}
		ctx.FillRect(x*cellWidth, y*cellWidth-2, width, cellWidth+4)
	}
	if cell.Walls.Right {
		width := 2
		if x == c.maze.Width()-1 {
			width = 4
		}
		ctx.FillRect(x*cellWidth+(cellWidth-width), y*cellWidth-2, width, cellWidth+4)
	}
}
Пример #2
0
func transferFile(typeName, method string, typeID uint8, o *overlay.Overlay) dom.Node {
	name := xform.InputText("name", "")
	url := xform.InputRadio("url", "switch", true)
	upload := xform.InputRadio("upload", "switch", false)
	fileI := xform.InputUpload("")
	urlI := xform.InputURL("", "")
	s := xform.InputSubmit(method)

	name.Required = true

	typeFunc := func(dom.Event) {
		if url.Checked {
			urlI.Style().RemoveProperty("display")
			fileI.Style().SetProperty("display", "none", "")
			urlI.Required = true
			fileI.Required = false
			fileI.SetID("")
			urlI.SetID("file")
		} else {
			fileI.Style().RemoveProperty("display")
			urlI.Style().SetProperty("display", "none", "")
			fileI.Required = true
			urlI.Required = false
			urlI.SetID("")
			fileI.SetID("file")
		}
	}

	typeFunc(nil)

	url.AddEventListener("change", false, typeFunc)
	upload.AddEventListener("change", false, typeFunc)

	f := xjs.AppendChildren(xdom.Form(), xjs.AppendChildren(xdom.Fieldset(),
		xjs.SetInnerText(xdom.Legend(), method+" "+typeName),
		xform.Label(typeName+" Name", "name"),
		name,
		xdom.Br(),

		xform.Label("URL", "url"),
		url,
		xdom.Br(),

		xform.Label("Upload", "upload"),
		upload,
		xdom.Br(),

		xform.Label("File", "file"),

		fileI,
		urlI,

		xdom.Br(),
		s,
	))

	s.AddEventListener("click", false, func(e dom.Event) {
		if name.Value == "" {
			return
		}
		if url.Checked {
			if urlI.Value == "" {
				return
			}
		} else if len(fileI.Files()) != 1 {
			return

		}
		s.Disabled = true
		name.Disabled = true
		url.Disabled = true
		upload.Disabled = true
		fileI.Disabled = true
		urlI.Disabled = true
		e.PreventDefault()
		go func() {
			d := xdom.Div()
			uo := overlay.New(d)
			uo.OnClose(func() {
				o.Close()
			})
			xjs.Body().AppendChild(uo)
			status := xdom.Div()
			d.AppendChild(xjs.SetInnerText(status, "Transferring..."))
			conn, err := websocket.Dial("ws://" + js.Global.Get("location").Get("host").String() + "/transfer")
			if err != nil {
				xjs.SetInnerText(status, err.Error())
				return
			}
			defer conn.Close()
			w := byteio.StickyWriter{Writer: byteio.LittleEndianWriter{Writer: conn}}
			r := byteio.StickyReader{Reader: byteio.LittleEndianReader{Reader: conn}}

			pb := progress.New(color.RGBA{255, 0, 0, 0}, color.RGBA{0, 0, 255, 0}, 400, 50)
			d.AppendChild(pb)

			if url.Checked {
				w.WriteUint8(typeID << 1)
				data.WriteString(&w, urlI.Value)
				length := int(r.ReadInt32())
				total := 0
				for total < length {
					switch v := r.ReadUint8(); v {
					case 1:
						i := int(r.ReadInt32())
						total += i
						pb.Percent(100 * total / length)
					default:
						xjs.SetInnerText(status, ReadError(&r).Error())
						return
					}
				}
			} else {
				f := files.NewFileReader(files.NewFile(fileI.Files()[0]))
				l := f.Len()
				if l == 0 {
					xjs.SetInnerText(status, "Zero-length file")
					return
				}
				w.WriteUint8(typeID<<1 | 1)
				w.WriteInt32(int32(l))
				io.Copy(&w, pb.Reader(f, l))
			}

			d.RemoveChild(pb)
			xjs.SetInnerText(status, "Checking File")

			data.WriteString(&w, name.Value)

			var ctx *dom.CanvasRenderingContext2D

			for {
				switch v := r.ReadUint8(); v {
				case 0:
					if r.Err != nil {
						xjs.SetInnerText(status, r.Err.Error())
					} else {
						xjs.SetInnerText(status, ReadError(&r).Error())
					}
					return
				case 1:
					files := make([]xform.Option, r.ReadInt16())
					for i := range files {
						files[i] = xform.Option{
							Value: strconv.Itoa(i),
							Label: data.ReadString(&r),
						}
					}
					j := xform.SelectBox("files", files...)
					sel := xjs.SetInnerText(xdom.Button(), "Select")
					fo := overlay.New(xjs.AppendChildren(xdom.Div(), xjs.AppendChildren(xdom.Fieldset(),
						xjs.SetInnerText(xdom.Legend(), "Please select the "+typeName+" file"),
						xform.Label("File", "files"),
						j,
						xdom.Br(),
						sel,
					)))
					c := make(chan int16, 0)
					done := false
					fo.OnClose(func() {
						if !done {
							done = true
							c <- -1
						}
					})
					sel.AddEventListener("click", false, func(dom.Event) {
						if !done {
							done = true
							v, err := strconv.Atoi(j.Value)
							if err != nil {
								v = -1
							}
							c <- int16(v)
							fo.Close()
						}
					})
					xjs.Body().AppendChild(fo)
					w.WriteInt16(<-c)
					close(c)
				case 2:
					w := r.ReadInt32()
					h := r.ReadInt32()
					canvas := xdom.Canvas()
					canvas.Width = int(w) * 8
					canvas.Height = int(h) * 8
					d.AppendChild(canvas)
					ctx = canvas.GetContext2d()
					ctx.Scale(8, 8)
				case 3:
					xjs.SetInnerText(status, data.ReadString(&r))
				case 4:
					x := r.ReadInt32()
					y := r.ReadInt32()
					red := r.ReadUint8()
					green := r.ReadUint8()
					blue := r.ReadUint8()
					alpha := r.ReadUint8()
					ctx.FillStyle = "rgba(" + strconv.Itoa(int(red)) + ", " + strconv.Itoa(int(green)) + ", " + strconv.Itoa(int(blue)) + ", " + strconv.FormatFloat(float64(alpha)/255, 'f', -1, 32) + ")"
					ctx.FillRect(int(x), int(y), 1, 1)
				case 255:
					uo.Close()
					return
				}
			}

		}()
	})
	return f
}
Пример #3
0
func fillCell(ctx *dom.CanvasRenderingContext2D, x, y int, color string) {
	ctx.FillStyle = color
	ctx.FillRect(x*cellWidth+2, y*cellWidth+2, cellWidth-4, cellWidth-4)
}
Пример #4
0
// The CanvasRenderingContext2D.getImageData() method of the Canvas 2D API returns an ImageData object
// representing the underlying pixel data for the area of the canvas
// denoted by the rectangle which starts at (sx, sy) and has an sw width and sh height.
// x The x coordinate of the upper left corner of the rectangle from which the ImageData will be extracted.
// y The y coordinate of the upper left corner of the rectangle from which the ImageData will be extracted.
// width The width of the rectangle from which the ImageData will be extracted.
// height The height of the rectangle from which the ImageData will be extracted.
func getImageData(ctx *dom.CanvasRenderingContext2D, x, y, width, heigth int) *imageData {
	o := ctx.Call("getImageData", x, y, width, heigth)
	return &imageData{Object: o}
}