77 lines
1.0 KiB
Go
77 lines
1.0 KiB
Go
package drawer
|
|
|
|
import (
|
|
"display-test/display"
|
|
"image"
|
|
"sync"
|
|
|
|
"golang.org/x/image/font"
|
|
"golang.org/x/image/font/inconsolata"
|
|
)
|
|
|
|
type drawer struct {
|
|
font font.Face
|
|
|
|
dev display.Display
|
|
img *image.Gray
|
|
imgMutex sync.Mutex
|
|
}
|
|
|
|
type Drawer interface {
|
|
GetFont() font.Face
|
|
|
|
// Lowlevel image
|
|
GetImg() *image.Gray
|
|
Lock()
|
|
Unlock()
|
|
|
|
Clear()
|
|
Flush() error
|
|
|
|
PutText(x, y int, text string)
|
|
|
|
PutBar(x0, y0, x1, y1, color int)
|
|
FillBar(x0, y0, x1, y1, color int)
|
|
}
|
|
|
|
func New(dev display.Display) Drawer {
|
|
return &drawer{
|
|
font: inconsolata.Regular8x16,
|
|
|
|
dev: dev,
|
|
img: image.NewGray(dev.GetBounds()),
|
|
}
|
|
}
|
|
|
|
func (d *drawer) GetImg() *image.Gray {
|
|
return d.img
|
|
}
|
|
|
|
func (d *drawer) GetFont() font.Face {
|
|
return d.font
|
|
}
|
|
|
|
func (d *drawer) Lock() {
|
|
d.imgMutex.Lock()
|
|
}
|
|
|
|
func (d *drawer) Unlock() {
|
|
d.imgMutex.Unlock()
|
|
}
|
|
|
|
func (d *drawer) Clear() {
|
|
d.Lock()
|
|
defer d.Unlock()
|
|
|
|
for i := range d.img.Pix {
|
|
d.img.Pix[i] = 0
|
|
}
|
|
}
|
|
|
|
func (d *drawer) Flush() error {
|
|
d.Lock()
|
|
defer d.Unlock()
|
|
|
|
return d.dev.Flush(d.img)
|
|
}
|