Add: components, progress bar

components/components.go

@@ -0,0 +1,20 @@
+package components
+
+// Some general types
+
+type rect struct {
+	x int
+	y int
+	w int
+	h int
+}
+
+type RectGetter interface {
+	GetPos() (int, int)
+	GetSize() (int, int)
+}
+
+type RectSetter interface {
+	SetPos(x, y int)
+	SetSize(w, h int)
+}

components/progressbar.go

@@ -0,0 +1,117 @@
+package components
+
+import (
+	"fmt"
+	"io"
+
+	"gitea.unprism.ru/yotia/display-test/drawer"
+)
+
+type progressBar struct {
+	drawer   drawer.Drawer // Drawer with dysplay
+	mask     uint32        // Flush mask
+	progress float64
+
+	rect rect // Rect
+}
+
+type ProgressBar interface {
+	RectGetter
+
+	SetProgress(coef float64) // Value from 0 to 1
+	Draw()                    // For any cases
+	Clear()                   // Clear space of bar
+	Flush()                   // For those times like after SetPos
+
+	io.Closer
+}
+
+// Creation function
+// Now the only way to chage shape is to recreate component
+func NewProgressBar(drawer drawer.Drawer, x, y, w, h int) (ProgressBar, error) {
+	if err := drawer.GetDisplay().IsReady(); err != nil {
+		return nil, fmt.Errorf("display is ready: %w", err)
+	}
+
+	// Check for correct sizes
+	if w < 4 {
+		return nil, fmt.Errorf("invalid width: below 4")
+	}
+	if h < 4 {
+		return nil, fmt.Errorf("invalid height: below 4")
+	}
+	pb := progressBar{
+		drawer: drawer,
+		rect:   rect{x, y, w, h},
+	}
+
+	pb.updateMask()
+	pb.Draw()
+	pb.Flush()
+
+	return &pb, nil
+}
+
+func (pb *progressBar) Flush() {
+	pb.drawer.GetDisplay().FlushByMask(pb.mask)
+}
+
+func (pb *progressBar) updateMask() {
+	pb.mask = 0
+
+	// Implementation dependent !!!
+	// Now for mt12232
+	y0 := min(3, max(0, int(pb.rect.y/8)))
+	y1 := min(3, max(0, int((pb.rect.y+pb.rect.h-1)/8)))
+
+	x0 := min(1, max(0, int(pb.rect.x/61)))
+	x1 := min(1, max(0, int((pb.rect.x+pb.rect.w-1)/61)))
+
+	//log.Println(x0, y0, x1, y1)
+	for y := y0; y <= y1; y++ {
+		for x := x0; x <= x1; x++ {
+			pb.mask |= (1 << (x*4 + y))
+		}
+	}
+}
+
+func (pb *progressBar) Close() error {
+	return nil
+}
+
+func (pb *progressBar) Clear() {
+	pb.drawer.FillBar(pb.rect.x, pb.rect.y, pb.rect.x+pb.rect.w, pb.rect.y+pb.rect.h, 0x00)
+}
+
+// Draw whole bar
+func (pb *progressBar) Draw() {
+	// Shape:
+	// Bounds - 1px
+	// Padding - 1px
+	// Progress - the rest space
+	pb.Clear()
+	pb.drawer.PutBar(pb.rect.x, pb.rect.y, pb.rect.x+pb.rect.w, pb.rect.y+pb.rect.h, 0xFF)
+	pb.drawBar()
+}
+
+// Draw only bar(without frames)
+func (pb *progressBar) drawBar() {
+	w := int(float64(pb.rect.w-4) * pb.progress)
+
+	pb.drawer.FillBar(pb.rect.x+2, pb.rect.y+2, pb.rect.x+2+w, pb.rect.y+pb.rect.h-2, 0xFF)
+}
+
+func (pb *progressBar) SetProgress(coef float64) {
+	pb.progress = max(0, min(1, coef))
+
+	pb.drawBar()
+	pb.Flush()
+}
+
+func (pb *progressBar) GetPos() (int, int) {
+	return pb.rect.x, pb.rect.y
+}
+
+func (pb *progressBar) GetSize() (int, int) {
+	return pb.rect.w, pb.rect.h
+}