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testcanvas.go
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testcanvas.go
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package test
import "fyne.io/fyne"
var dummyCanvas fyne.Canvas
type testCanvas struct {
content fyne.CanvasObject
focused fyne.Focusable
onTypedRune func(rune)
onTypedKey func(*fyne.KeyEvent)
fyne.ShortcutHandler
}
func (c *testCanvas) Content() fyne.CanvasObject {
return c.content
}
func (c *testCanvas) SetContent(content fyne.CanvasObject) {
c.content = content
}
func (c *testCanvas) Refresh(fyne.CanvasObject) {
}
func (c *testCanvas) Focus(obj fyne.Focusable) {
c.focused = obj
obj.FocusGained()
}
func (c *testCanvas) Focused() fyne.Focusable {
return c.focused
}
func (c *testCanvas) Size() fyne.Size {
return fyne.NewSize(10, 10)
}
func (c *testCanvas) Scale() float32 {
return 1.0
}
func (c *testCanvas) SetScale(float32) {
}
func (c *testCanvas) OnTypedRune() func(rune) {
return c.onTypedRune
}
func (c *testCanvas) SetOnTypedRune(handler func(rune)) {
c.onTypedRune = handler
}
func (c *testCanvas) OnTypedKey() func(*fyne.KeyEvent) {
return c.onTypedKey
}
func (c *testCanvas) SetOnTypedKey(handler func(*fyne.KeyEvent)) {
c.onTypedKey = handler
}
// NewCanvas returns a single use in-memory canvas used for testing
func NewCanvas() fyne.Canvas {
return &testCanvas{}
}
// Canvas returns a reusable in-memory canvas used for testing
func Canvas() fyne.Canvas {
if dummyCanvas == nil {
dummyCanvas = NewCanvas()
}
return dummyCanvas
}