internal

Documentation

Index

• Constants
• func LogHint(reason string)
• func ScaleInt(c fyne.Canvas, v float32) int
• func UnscaleInt(c fyne.Canvas, v int) float32
• type ClipItem
  • func (i *ClipItem) Intersect(p fyne.Position, s fyne.Size) *ClipItem
  • func (i *ClipItem) Rect() (fyne.Position, fyne.Size)
• type ClipStack
  • func (c *ClipStack) Length() int
  • func (c *ClipStack) Pop() *ClipItem
  • func (c *ClipStack) Push(p fyne.Position, s fyne.Size) *ClipItem
  • func (c *ClipStack) Top() *ClipItem
• type Docs
  • func (d *Docs) Create(name string) (fyne.URIWriteCloser, error)
  • func (d *Docs) List() []string
  • func (d *Docs) Open(name string) (fyne.URIReadCloser, error)
  • func (d *Docs) Remove(name string) error
  • func (d *Docs) Save(name string) (fyne.URIWriteCloser, error)
• type InMemoryPreferences
  • func NewInMemoryPreferences() *InMemoryPreferences
  • func (p *InMemoryPreferences) AddChangeListener(listener func())
  • func (p *InMemoryPreferences) Bool(key string) bool
  • func (p *InMemoryPreferences) BoolWithFallback(key string, fallback bool) bool
  • func (p *InMemoryPreferences) ChangeListeners() []func()
  • func (p *InMemoryPreferences) Float(key string) float64
  • func (p *InMemoryPreferences) FloatWithFallback(key string, fallback float64) float64
  • func (p *InMemoryPreferences) Int(key string) int
  • func (p *InMemoryPreferences) IntWithFallback(key string, fallback int) int
  • func (p *InMemoryPreferences) ReadValues(fn func(map[string]interface{}))
  • func (p *InMemoryPreferences) RemoveValue(key string)
  • func (p *InMemoryPreferences) SetBool(key string, value bool)
  • func (p *InMemoryPreferences) SetFloat(key string, value float64)
  • func (p *InMemoryPreferences) SetInt(key string, value int)
  • func (p *InMemoryPreferences) SetString(key string, value string)
  • func (p *InMemoryPreferences) String(key string) string
  • func (p *InMemoryPreferences) StringWithFallback(key, fallback string) string
  • func (p *InMemoryPreferences) WriteValues(fn func(map[string]interface{}))
• type OverlayStack
  • func (s *OverlayStack) Add(overlay fyne.CanvasObject)
  • func (s *OverlayStack) List() []fyne.CanvasObject
  • func (s *OverlayStack) ListFocusManagers() []*app.FocusManager
  • func (s *OverlayStack) Remove(overlay fyne.CanvasObject)
  • func (s *OverlayStack) Top() fyne.CanvasObject
  • func (s *OverlayStack) TopFocusManager() *app.FocusManager

Constants

const HintsEnabled = false

HintsEnabled is false to indicate that hints are not currently switched on. To enable please rebuild with "-tags hints" parameters.

Functions

func LogHint

func LogHint(reason string)

LogHint reports a developer hint that should be followed to improve their app. This does nothing unless the "hints" build flag is used.

func ScaleInt

func ScaleInt(c fyne.Canvas, v float32) int

ScaleInt converts a fyne coordinate in the given canvas to a screen coordinate

func UnscaleInt

func UnscaleInt(c fyne.Canvas, v int) float32

UnscaleInt converts a screen coordinate for a given canvas to a fyne coordinate

Types

type ClipItem

type ClipItem struct {
	// contains filtered or unexported fields
}

ClipItem represents a single clip in a clip stack, denoted by a size and position.

func (*ClipItem) Intersect

func (i *ClipItem) Intersect(p fyne.Position, s fyne.Size) *ClipItem

Intersect returns a new clip item that is the intersection of the requested parameters and this clip.

func (*ClipItem) Rect

func (i *ClipItem) Rect() (fyne.Position, fyne.Size)

Rect returns the position and size parameters of the clip.

type ClipStack

type ClipStack struct {
	// contains filtered or unexported fields
}

ClipStack keeps track of the areas that should be clipped when drawing a canvas. If no clips are present then adding one will be added as-is. Subsequent items pushed will be completely within the previous clip.

func (*ClipStack) Length

func (c *ClipStack) Length() int

Length returns the number of items in this clip stack. 0 means no clip.

func (*ClipStack) Pop

func (c *ClipStack) Pop() *ClipItem

Pop removes the current top clip and returns it.

func (*ClipStack) Push

func (c *ClipStack) Push(p fyne.Position, s fyne.Size) *ClipItem

Push a new clip onto this stack at position and size specified. The returned clip item is the result of calculating the intersection of the requested clip and it's parent.

func (*ClipStack) Top

func (c *ClipStack) Top() *ClipItem

Top returns the current clip item - it will always be within the bounds of any parent clips.

type Docs

type Docs struct {
	RootDocURI fyne.URI
}

Docs is an internal implementation of the document features of the Storage interface. It is based on top of the current `file` repository and is rooted at RootDocURI.

func (*Docs) Create

func (d *Docs) Create(name string) (fyne.URIWriteCloser, error)

Create will create a new document ready for writing, you must write something and close the returned writer for the create process to complete. If the document for this app with that name already exists a storage.ErrAlreadyExists error will be returned.

func (*Docs) List

func (d *Docs) List() []string

List returns all documents that have been saved by the current application. Remember to use `app.NewWithID` so that your storage is unique.

func (*Docs) Open

func (d *Docs) Open(name string) (fyne.URIReadCloser, error)

Open will grant access to the contents of the named file. If an error occurs it is returned instead.

func (*Docs) Remove

func (d *Docs) Remove(name string) error

Remove will delete the document with the specified name, if it exists

func (*Docs) Save

func (d *Docs) Save(name string) (fyne.URIWriteCloser, error)

Save will open a document ready for writing, you close the returned writer for the save to complete. If the document for this app with that name does not exist a storage.ErrNotExists error will be returned.

type InMemoryPreferences

type InMemoryPreferences struct {
	// contains filtered or unexported fields
}

InMemoryPreferences provides an implementation of the fyne.Preferences API that is stored in memory.

func NewInMemoryPreferences

func NewInMemoryPreferences() *InMemoryPreferences

NewInMemoryPreferences creates a new preferences implementation stored in memory

func (*InMemoryPreferences) AddChangeListener

func (p *InMemoryPreferences) AddChangeListener(listener func())

AddChangeListener allows code to be notified when some preferences change. This will fire on any update. The passed 'listener' should not try to write values.

func (*InMemoryPreferences) Bool

func (p *InMemoryPreferences) Bool(key string) bool

Bool looks up a boolean value for the key

func (*InMemoryPreferences) BoolWithFallback

func (p *InMemoryPreferences) BoolWithFallback(key string, fallback bool) bool

BoolWithFallback looks up a boolean value and returns the given fallback if not found

func (*InMemoryPreferences) ChangeListeners

func (p *InMemoryPreferences) ChangeListeners() []func()

ChangeListeners returns the list of listeners registered for this set of preferences.

func (*InMemoryPreferences) Float

func (p *InMemoryPreferences) Float(key string) float64

Float looks up a float64 value for the key

func (*InMemoryPreferences) FloatWithFallback

func (p *InMemoryPreferences) FloatWithFallback(key string, fallback float64) float64

FloatWithFallback looks up a float64 value and returns the given fallback if not found

func (*InMemoryPreferences) Int

func (p *InMemoryPreferences) Int(key string) int

Int looks up an integer value for the key

func (*InMemoryPreferences) IntWithFallback

func (p *InMemoryPreferences) IntWithFallback(key string, fallback int) int

IntWithFallback looks up an integer value and returns the given fallback if not found

func (*InMemoryPreferences) ReadValues

func (p *InMemoryPreferences) ReadValues(fn func(map[string]interface{}))

ReadValues provides read access to the underlying value map - for internal use only... You should not retain a reference to the map nor write to the values in the callback function

func (*InMemoryPreferences) RemoveValue

func (p *InMemoryPreferences) RemoveValue(key string)

RemoveValue deletes a value on the given key

func (*InMemoryPreferences) SetBool

func (p *InMemoryPreferences) SetBool(key string, value bool)

SetBool saves a boolean value for the given key

func (*InMemoryPreferences) SetFloat

func (p *InMemoryPreferences) SetFloat(key string, value float64)

SetFloat saves a float64 value for the given key

func (*InMemoryPreferences) SetInt

func (p *InMemoryPreferences) SetInt(key string, value int)

SetInt saves an integer value for the given key

func (*InMemoryPreferences) SetString

func (p *InMemoryPreferences) SetString(key string, value string)

SetString saves a string value for the given key

func (*InMemoryPreferences) String

func (p *InMemoryPreferences) String(key string) string

String looks up a string value for the key

func (*InMemoryPreferences) StringWithFallback

func (p *InMemoryPreferences) StringWithFallback(key, fallback string) string

StringWithFallback looks up a string value and returns the given fallback if not found

func (*InMemoryPreferences) WriteValues

func (p *InMemoryPreferences) WriteValues(fn func(map[string]interface{}))

WriteValues provides write access to the underlying value map - for internal use only... You should not retain a reference to the map passed to the callback function

type OverlayStack

type OverlayStack struct {
	OnChange func()
	Canvas   fyne.Canvas
	// contains filtered or unexported fields
}

OverlayStack implements fyne.OverlayStack

func (*OverlayStack) Add

func (s *OverlayStack) Add(overlay fyne.CanvasObject)

Add puts an overlay on the stack.

Implements: fyne.OverlayStack

func (*OverlayStack) List

func (s *OverlayStack) List() []fyne.CanvasObject

List returns all overlays on the stack from bottom to top.

Implements: fyne.OverlayStack

func (*OverlayStack) ListFocusManagers

func (s *OverlayStack) ListFocusManagers() []*app.FocusManager

ListFocusManagers returns all focus managers on the stack from bottom to top.

func (*OverlayStack) Remove

func (s *OverlayStack) Remove(overlay fyne.CanvasObject)

Remove deletes an overlay and all overlays above it from the stack.

Implements: fyne.OverlayStack

func (*OverlayStack) Top

func (s *OverlayStack) Top() fyne.CanvasObject

Top returns the top-most overlay of the stack.

Implements: fyne.OverlayStack

func (*OverlayStack) TopFocusManager

func (s *OverlayStack) TopFocusManager() *app.FocusManager

TopFocusManager returns the app.FocusManager assigned to the top-most overlay of the stack.