inky: improve godoc (#94)

Add godoc links to ease discovery.

inky/impression.go

@@ -181,7 +181,7 @@ func (d *DevImpression) Saturation() uint {
 	return d.saturation
 }
 
-// SetSaturaton changes the saturation level. This will not take effect until the next Draw().
+// SetSaturaton changes the saturation level. This will take effect on the next call to [*DevImpression.Draw]().
 func (d *DevImpression) SetSaturation(level uint) error {
 	if level > 100 {
 		return fmt.Errorf("saturation level needs to be between 0 and 100")
@@ -193,12 +193,12 @@ func (d *DevImpression) SetSaturation(level uint) error {
 	return nil
 }
 
-// SetBorder changes the border color. This will not take effect until the next Draw().
+// SetBorder changes the border color. This will take effect on the next call to [*DevImpression.Draw]().
 func (d *DevImpression) SetBorder(c ImpressionColor) {
 	d.border = Color(c)
 }
 
-// Render renders the content of the Pix to the screen.
+// Render renders the content of the [*DevImpression.Pix] to the screen.
 func (d *DevImpression) Render() error {
 	if d.flipVertically {
 		for w := 0; w < len(d.Pix)/2-1; w = w + d.width {
@@ -385,7 +385,7 @@ func (d *DevImpression) At(x, y int) color.Color {
 	return d.Palette[d.Pix[y*d.width+x]]
 }
 
-// Set sets the pixel at (x, y) to the given color. This will not take effect until the next Draw().
+// Set sets the pixel at (x, y) to the given color. This will take effect on the next [*DevImpression.Draw]().
 func (d *DevImpression) Set(x, y int, c color.Color) {
 	if d.Palette == nil {
 		d.Palette = d.blend()

inky/inky.go

@@ -123,12 +123,12 @@ func New(p spi.Port, dc gpio.PinOut, reset gpio.PinOut, busy gpio.PinIn, o *Opts
 	return d, nil
 }
 
-// SetBorder changes the border color. This will not take effect until the next Draw().
+// SetBorder changes the border color. This will take effect on the next call to [*Dev.Draw]().
 func (d *Dev) SetBorder(c Color) {
 	d.border = c
 }
 
-// SetModelColor changes the model color. This will not take effect until the next Draw().
+// SetModelColor changes the model color. This will take effect on the next call to [*Dev.Draw]().
 // Useful if you want to switch between two-color and three-color drawing.
 func (d *Dev) SetModelColor(c Color) error {
 	if c != Black && c != Red && c != Yellow {
@@ -138,7 +138,7 @@ func (d *Dev) SetModelColor(c Color) error {
 	return nil
 }
 
-// String implements conn.Resource.
+// String implements interface [conn.Resource].
 func (d *Dev) String() string {
 	index := int(d.variant)
 	if index < len(displayVariantMap) {
@@ -165,12 +165,12 @@ func (d *Dev) SetFlipHorizontally(f bool) {
 	d.flipHorizontally = f
 }
 
-// Halt implements conn.Resource.
+// Halt implements interface [conn.Resource].
 func (d *Dev) Halt() error {
 	return nil
 }
 
-// ColorModel implements display.Drawer
+// ColorModel implements interface [display.Drawer].
 // Maps white to white, black to black and anything else as red. Red is used as
 // a placeholder for the display's third color, i.e., red or yellow.
 func (d *Dev) ColorModel() color.Model {
@@ -200,12 +200,12 @@ func (d *Dev) ColorModel() color.Model {
 	})
 }
 
-// Bounds implements display.Drawer
+// Bounds implements interface [display.Drawer].
 func (d *Dev) Bounds() image.Rectangle {
 	return d.bounds
 }
 
-// Draw implements display.Drawer
+// Draw implements interface [display.Drawer].
 func (d *Dev) Draw(dstRect image.Rectangle, src image.Image, srcPtrs image.Point) error {
 	if dstRect != d.Bounds() {
 		return fmt.Errorf("partial update not supported")

inky/types.go

@@ -23,7 +23,7 @@ const (
 	IMPRESSION57
 )
 
-// Set sets the Model to a value represented by the string s. Set implements the flag.Value interface.
+// Set sets the Model to a value represented by the string s. Set implements the [flag.Value] interface.
 func (m *Model) Set(s string) error {
 	switch s {
 	case "PHAT":
@@ -55,7 +55,7 @@ const (
 	Multi
 )
 
-// Set sets the Color to a value represented by the string s. Set implements the flag.Value interface.
+// Set sets the [Color] to a value represented by the string s. Set implements the [flag.Value] interface.
 func (c *Color) Set(s string) error {
 	switch s {
 	case "black":
@@ -86,7 +86,7 @@ const (
 	CleanImpression
 )
 
-// Set sets the ImpressionColor to a value represented by the string s. Set implements the flag.Value interface.
+// Set sets the [ImpressionColor] to a value represented by the string s. Set implements the [flag.Value] interface.
 func (c *ImpressionColor) Set(s string) error {
 	switch s {
 	case "black":