94 lines
1.7 KiB
Go
94 lines
1.7 KiB
Go
package components
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import (
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"fmt"
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"gitea.unprism.ru/yotia/display-test/drawer"
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)
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type text struct {
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drawer drawer.Drawer // Drawer with dysplay
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mask mask // Flush mask
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str string
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rect rect // Rect
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}
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type Text interface {
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Component
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RectSetter
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SetStr(newStr string) // Update string and redraw
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Clear() // Clear space of bar
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}
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// Creation function
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// Now the only way to chage shape is to recreate component
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func NewText(d drawer.Drawer, x, y int) (Text, error) {
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if err := d.GetDisplay().IsReady(); err != nil {
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return nil, fmt.Errorf("display is ready: %w", err)
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}
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t := text{
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drawer: d,
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rect: rect{x, y, 0, drawer.FontCharH},
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}
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t.mask.Update(t.rect)
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//t.Draw()
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return &t, nil
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}
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func (t *text) Close() error {
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return nil
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}
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func (t *text) Clear() {
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t.drawer.FillBar(t.rect.x, t.rect.y, t.rect.x+t.rect.w, t.rect.y+t.rect.h, 0x00)
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}
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func (t *text) Draw() {
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t.drawer.PutText(t.rect.x, t.rect.y, t.str)
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t.drawer.GetDisplay().FlushByMask(t.mask.bits)
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}
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func (t *text) updateW() {
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t.rect.w = len(t.str)*(drawer.FontCharW+drawer.CharGap) - drawer.CharGap
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}
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func (t *text) SetStr(str string) {
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t.str = str
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newW := len(t.str)*(drawer.FontCharW+drawer.CharGap) - drawer.CharGap
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if t.rect.w-newW > 0 {
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// Need to clear some space
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t.Clear()
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t.drawer.FillBar(t.rect.x+newW, t.rect.y, t.rect.x+t.rect.w, t.rect.y+t.rect.h, 0)
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} else {
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t.rect.w = newW
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t.mask.Update(t.rect)
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}
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t.Draw()
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t.rect.w = newW
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t.mask.Update(t.rect)
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}
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func (t *text) GetPos() (int, int) {
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return t.rect.x, t.rect.y
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}
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func (t *text) GetSize() (int, int) {
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return t.rect.w, t.rect.h
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}
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func (t *text) SetPos(x, y int) {
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t.rect.x = x
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t.rect.y = y
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t.mask.Update(t.rect)
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}
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func (t *text) SetSize(w, h int) {
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// Empty
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}
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