media

Documentation

Overview

Package media provides utilities for wasm media.

Index

• func OnKey(ev KeyEvent, f func(key string))
• type Canvas
  • func GetCanvas(id string) Canvas
  • func (c Canvas) ClearRect(r Rect)
  • func (c Canvas) ClientH() int
  • func (c Canvas) ClientW() int
  • func (c Canvas) DrawImage(img Image, r Rect)
  • func (c Canvas) DrawImageFlipHorizontal(img Image, r Rect)
  • func (c Canvas) DrawText(s string, x, y int)
  • func (c Canvas) OnMouse(mapTouch bool, f func(click MouseClick, x, y int))
  • func (c Canvas) SetFont(name, style string)
• type Image
  • func NewImage(uri, alt string) (Image, error)
  • func NewImageSet(uriprefix string) ([]Image, error)
  • func (img Image) H() int
  • func (img Image) W() int
• type KeyEvent
• type MouseClick
  • func (m MouseClick) String() string
• type Rect

Functions

func OnKey

func OnKey(ev KeyEvent, f func(key string))

OnKey ...

Types

type Canvas

type Canvas struct {
	Value js.Value
	// contains filtered or unexported fields
}

Canvas represents an HTML5 canvas.

func GetCanvas

func GetCanvas(id string) Canvas

GetCanvas gets the canvas with given id from HTML5.

func (Canvas) ClearRect

func (c Canvas) ClearRect(r Rect)

ClearRect clears rectangle r.

func (Canvas) ClientH

func (c Canvas) ClientH() int

ClientH returns the client height.

func (Canvas) ClientW

func (c Canvas) ClientW() int

ClientW returns the client width.

func (Canvas) DrawImage

func (c Canvas) DrawImage(img Image, r Rect)

DrawImage draws an image into the canvas.

func (Canvas) DrawImageFlipHorizontal

func (c Canvas) DrawImageFlipHorizontal(img Image, r Rect)

DrawImageFlipHorizontal ...

func (Canvas) DrawText

func (c Canvas) DrawText(s string, x, y int)

DrawText ...

func (Canvas) OnMouse

func (c Canvas) OnMouse(mapTouch bool, f func(click MouseClick, x, y int))

OnMouse ...

func (Canvas) SetFont

func (c Canvas) SetFont(name, style string)

SetFont ...

type Image

type Image struct {
	Value js.Value
}

Image represents a js image.

func NewImage

func NewImage(uri, alt string) (Image, error)

NewImage creates and initializes an Image detached from the DOM.

func NewImageSet

func NewImageSet(uriprefix string) ([]Image, error)

NewImageSet ...

func (Image) H

func (img Image) H() int

H returns the image height.

func (Image) W

func (img Image) W() int

W returns the image width.

type KeyEvent

type KeyEvent string

KeyEvent ...

const (
	KeyPress KeyEvent = "keypress"
	KeyUp    KeyEvent = "keyup"
	KeyDown  KeyEvent = "keydown"
)

Key events ...

type MouseClick

type MouseClick int8

MouseClick ...

const (
	MouseUp MouseClick = iota
	MouseDown
)

Mouse clicks ...

func (MouseClick) String

func (m MouseClick) String() string

type Rect

type Rect struct {
	X, Y,
	W, H int
}

Rect represents a rectangle.