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@ -29,7 +29,8 @@ type Keyboard struct {
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keys [][]*Key |
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background *ebiten.Image |
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backgroundLower *ebiten.Image |
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backgroundUpper *ebiten.Image |
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backgroundDirty bool |
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op *ebiten.DrawImageOptions |
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@ -46,7 +47,7 @@ type Keyboard struct {
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labelFont font.Face |
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} |
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// NewKeyboard returns a new Keyboard.
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// NewKeyboard returns a new Keyboard widget.
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func NewKeyboard() *Keyboard { |
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fontFace, err := defaultFontFace(64) |
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if err != nil { |
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@ -58,7 +59,9 @@ func NewKeyboard() *Keyboard {
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op: &ebiten.DrawImageOptions{ |
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Filter: ebiten.FilterNearest, |
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}, |
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background: ebiten.NewImage(1, 1), |
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keys: KeysQWERTY, |
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backgroundLower: ebiten.NewImage(1, 1), |
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backgroundUpper: ebiten.NewImage(1, 1), |
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backgroundColor: color.Black, |
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labelFont: fontFace, |
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} |
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@ -93,10 +96,12 @@ func (k *Keyboard) SetRect(x, y, w, h int) {
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k.backgroundDirty = true |
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} |
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// GetKeys returns the keys of the keyboard.
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func (k *Keyboard) GetKeys() [][]*Key { |
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return k.keys |
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} |
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// SetKeys sets the keys of the keyboard.
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func (k *Keyboard) SetKeys(keys [][]*Key) { |
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k.keys = keys |
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@ -104,12 +109,15 @@ func (k *Keyboard) SetKeys(keys [][]*Key) {
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k.backgroundDirty = true |
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} |
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// SetLabelFont sets the key label font.
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func (k *Keyboard) SetLabelFont(face font.Face) { |
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k.labelFont = face |
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k.backgroundDirty = true |
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} |
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// SetHideShortcuts sets the key shortcuts which, when pressed, will hide the
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// keyboard.
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func (k *Keyboard) SetHideShortcuts(shortcuts []ebiten.Key) { |
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k.hideShortcuts = shortcuts |
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} |
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@ -126,8 +134,9 @@ func (k *Keyboard) updateKeyRects() {
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} |
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} |
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cellPaddingW := 7 |
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cellPaddingH := 7 |
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// TODO user configurable
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cellPaddingW := 2 |
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cellPaddingH := 2 |
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cellH := (k.h - (cellPaddingH * (len(k.keys) - 1))) / len(k.keys) |
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@ -186,6 +195,7 @@ func (k *Keyboard) handleHideKey(inputKey ebiten.Key) bool {
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return false |
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} |
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// Hit handles a key press.
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func (k *Keyboard) Hit(key *Key) { |
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input := key.LowerInput |
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if k.shift { |
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@ -194,7 +204,7 @@ func (k *Keyboard) Hit(key *Key) {
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if input.Key == ebiten.KeyShift { |
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k.shift = !k.shift |
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k.backgroundDirty = true |
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ebiten.ScheduleFrame() |
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return |
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} else if k.handleHideKey(input.Key) { |
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// Hidden
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@ -204,7 +214,7 @@ func (k *Keyboard) Hit(key *Key) {
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k.inputBuffer <- input |
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} |
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// Update handles user input.
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// Update handles user input. This function is called by Ebiten.
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func (k *Keyboard) Update() error { |
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if !k.visible { |
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return nil |
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@ -232,6 +242,7 @@ func (k *Keyboard) Update() error {
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} |
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} |
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// Handle mouse input
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pressDuration := 50 * time.Millisecond |
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if inpututil.IsMouseButtonJustReleased(ebiten.MouseButtonLeft) { |
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x, y := ebiten.CursorPosition() |
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@ -248,7 +259,7 @@ func (k *Keyboard) Update() error {
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// TODO replace with pressUntil
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go func() { |
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time.Sleep(50 * time.Millisecond) |
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time.Sleep(pressDuration) |
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key.pressed = false |
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ebiten.ScheduleFrame() |
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@ -260,6 +271,15 @@ func (k *Keyboard) Update() error {
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key := k.at(x, y) |
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if key != nil { |
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key.pressed = true |
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for _, rowKeys := range k.keys { |
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for _, rowKey := range rowKeys { |
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if rowKey == key || !rowKey.pressed { |
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continue |
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} |
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rowKey.pressed = false |
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} |
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} |
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} |
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} |
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// Handle touch input
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@ -268,17 +288,47 @@ func (k *Keyboard) Update() error {
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x, y := ebiten.TouchPosition(id) |
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key := k.at(x, y) |
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if key != nil { |
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if key != nil && !key.pressed { |
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key.pressed = true |
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key.pressedTouchID = id |
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for _, rowKeys := range k.keys { |
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for _, rowKey := range rowKeys { |
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if rowKey != key && rowKey.pressed { |
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rowKey.pressed = false |
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} |
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} |
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} |
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k.Hit(key) |
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// TODO replace with pressUntil
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go func() { |
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time.Sleep(50 * time.Millisecond) |
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var touchIDs []ebiten.TouchID |
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t := time.NewTicker(pressDuration) |
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for range t.C { |
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touchIDs = ebiten.AppendTouchIDs(touchIDs[:0]) |
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var found bool |
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for _, touchID := range touchIDs { |
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if id == touchID { |
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found = true |
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break |
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} |
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} |
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key.pressed = false |
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ebiten.ScheduleFrame() |
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if found { |
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tx, ty := ebiten.TouchPosition(id) |
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if tx != 0 || ty != 0 { |
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x, y = tx, ty |
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} |
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} |
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if !found { |
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key.pressed = false |
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ebiten.ScheduleFrame() |
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return |
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} |
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} |
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}() |
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} |
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} |
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@ -294,44 +344,63 @@ func (k *Keyboard) drawBackground() {
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return |
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} |
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if k.background == nil || k.background.Bounds() != image.Rect(0, 0, k.w, k.h) || k.backgroundColor != k.lastBackgroundColor { |
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k.background = ebiten.NewImageFromImage(image.NewRGBA(image.Rect(0, 0, k.w, k.h))) |
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k.background.Fill(k.backgroundColor) |
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if k.backgroundLower.Bounds() != image.Rect(0, 0, k.w, k.h) || k.backgroundUpper.Bounds() != image.Rect(0, 0, k.w, k.h) || k.backgroundColor != k.lastBackgroundColor { |
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k.backgroundLower = ebiten.NewImage(k.w, k.h) |
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k.backgroundLower.Fill(k.backgroundColor) |
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k.backgroundUpper = ebiten.NewImage(k.w, k.h) |
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k.backgroundUpper.Fill(k.backgroundColor) |
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k.lastBackgroundColor = k.backgroundColor |
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} |
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for _, rowKeys := range k.keys { |
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for _, key := range rowKeys { |
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label := key.LowerLabel |
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if k.shift { |
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label = key.UpperLabel |
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} |
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var img *ebiten.Image |
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for i := 0; i < 2; i++ { |
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shift := i == 1 |
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for _, rowKeys := range k.keys { |
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for _, key := range rowKeys { |
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if img == nil { |
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img = ebiten.NewImage(key.w, key.h) |
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} else { |
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bounds := img.Bounds() |
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if bounds.Dx() != key.w || bounds.Dy() != key.h { |
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img = ebiten.NewImage(key.w, key.h) |
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} |
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} |
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// Draw key background
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img := ebiten.NewImageFromImage(image.NewRGBA(image.Rect(0, 0, key.w, key.h))) |
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img.Fill(color.RGBA{100, 100, 100, 255}) |
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label := key.LowerLabel |
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if shift { |
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label = key.UpperLabel |
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} |
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// Draw key label
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bounds := text.BoundString(k.labelFont, label) |
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x := (key.w - bounds.Dx()) / 2 |
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if x < 0 { |
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x = 0 |
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} |
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y := key.h / 2 |
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text.Draw(img, label, k.labelFont, x, y, color.White) |
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// Draw key background
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img.Fill(color.RGBA{100, 100, 100, 255}) |
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// Draw key
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k.op.GeoM.Reset() |
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k.op.GeoM.Translate(float64(key.x), float64(key.y)) |
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k.background.DrawImage(img, k.op) |
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// Draw key label
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bounds := text.BoundString(k.labelFont, label) |
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x := (key.w - bounds.Dx()) / 2 |
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if x < 0 { |
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x = 0 |
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} |
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y := key.h / 2 |
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text.Draw(img, label, k.labelFont, x, y, color.White) |
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k.op.ColorM.Reset() |
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// Draw key
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k.op.GeoM.Reset() |
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k.op.GeoM.Translate(float64(key.x), float64(key.y)) |
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if !shift { |
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k.backgroundLower.DrawImage(img, k.op) |
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} else { |
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k.backgroundUpper.DrawImage(img, k.op) |
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} |
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k.op.ColorM.Reset() |
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} |
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} |
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} |
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} |
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// Draw draws the widget on the provided image.
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// Draw draws the widget on the provided image. This function is called by Ebiten.
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func (k *Keyboard) Draw(target *ebiten.Image) { |
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if !k.visible { |
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return |
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@ -342,10 +411,17 @@ func (k *Keyboard) Draw(target *ebiten.Image) {
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k.backgroundDirty = false |
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} |
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var background *ebiten.Image |
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if !k.shift { |
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background = k.backgroundLower |
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} else { |
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background = k.backgroundUpper |
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} |
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k.op.GeoM.Reset() |
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k.op.GeoM.Translate(float64(k.x), float64(k.y)) |
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k.op.ColorM.Scale(1, 1, 1, k.alpha) |
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target.DrawImage(k.background, k.op) |
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target.DrawImage(background, k.op) |
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k.op.ColorM.Reset() |
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// Draw pressed keys
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@ -360,7 +436,7 @@ func (k *Keyboard) Draw(target *ebiten.Image) {
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k.op.GeoM.Translate(float64(k.x+key.x), float64(k.y+key.y)) |
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k.op.ColorM.Scale(0.75, 0.75, 0.75, k.alpha) |
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target.DrawImage(k.background.SubImage(image.Rect(key.x, key.y, key.x+key.w, key.y+key.h)).(*ebiten.Image), k.op) |
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target.DrawImage(background.SubImage(image.Rect(key.x, key.y, key.x+key.w, key.y+key.h)).(*ebiten.Image), k.op) |
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k.op.ColorM.Reset() |
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} |
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} |
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@ -394,6 +470,7 @@ func (k *Keyboard) Show(inputBuffer chan *Input) {
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k.visible = true |
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} |
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// Visible returns whether the keyboard is currently shown.
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func (k *Keyboard) Visible() bool { |
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return k.visible |
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} |
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