73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package hinters
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import (
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"encoding/hex"
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"fmt"
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"image"
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"image/color"
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"regexp"
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"tuxpa.in/t/erm/app/darktile/termutil"
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)
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func init() {
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register(&HexColourHinter{}, PriorityLow)
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}
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var hexColourRegex = regexp.MustCompile(`#[0-9A-Fa-f]{6}`)
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type HexColourHinter struct {
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}
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func (h *HexColourHinter) Match(text string, cursorIndex int) (matched bool, offset int, length int) {
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matches := hexColourRegex.FindAllStringIndex(text, -1)
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for _, match := range matches {
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if match[0] <= cursorIndex && match[1] > cursorIndex {
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return true, match[0], match[1] - match[0]
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}
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}
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return
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}
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func (h *HexColourHinter) Activate(api HintAPI, match string, start termutil.Position, end termutil.Position) error {
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colourBytes, err := hex.DecodeString(match[1:])
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if err != nil {
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return err
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}
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cellSize := api.CellSize()
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size := image.Rectangle{image.Point{}, image.Point{
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X: cellSize.X * 18,
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Y: cellSize.Y,
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}}
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img := image.NewRGBA(size)
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for x := 0; x < size.Dx(); x++ {
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for y := 0; y < size.Dy(); y++ {
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img.SetRGBA(x, y, color.RGBA{
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R: colourBytes[0],
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G: colourBytes[1],
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B: colourBytes[2],
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A: 0xff,
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})
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}
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}
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api.Highlight(start, end, fmt.Sprintf(
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`Hex: %s
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RGB: %d, %d, %d`,
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match,
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colourBytes[0],
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colourBytes[1],
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colourBytes[2],
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), img)
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return nil
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}
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func (h *HexColourHinter) Deactivate(api HintAPI) error {
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api.ClearHighlight()
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return nil
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}
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func (h *HexColourHinter) Click(api HintAPI) error {
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return nil
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}
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