mirror of
https://github.com/gizak/termui.git
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62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
// <Copyright> 2018,2019 Simon Robin Lehn. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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package exp
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import (
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"fmt"
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"bytes"
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"encoding/base64"
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"errors"
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"image/png" // for encoding for iTerm2
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. "github.com/gizak/termui/v3"
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"github.com/gizak/termui/v3/widgets"
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)
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func init() {
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widgets.RegisterDrawer(
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"iterm2",
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widgets.Drawer{
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Remote: true,
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IsEscapeString: true,
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Available: func() bool {return isIterm2},
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Draw: drawITerm2,
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},
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)
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}
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func drawITerm2(wdgt *widgets.Image, buf *Buffer) (err error) {
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wdgt.Block.Draw(buf)
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img, err := resizeImage(wdgt, buf)
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if err != nil {
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return err
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}
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imageDimensions := wdgt.GetVisibleArea()
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// iTerm2
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// https://www.iterm2.com/documentation-images.html
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if isIterm2 {
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buf := new(bytes.Buffer)
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if err = png.Encode(buf, img); err != nil {
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goto skipIterm2
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}
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imgBase64 := base64.StdEncoding.EncodeToString(buf.Bytes())
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nameBase64 := base64.StdEncoding.EncodeToString([]byte(wdgt.Block.Title))
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// 0 for stretching - 1 for no stretching
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noStretch := 0
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iterm2String := wrap(fmt.Sprintf("\033[?8452h\033]1337;File=name=%s;inline=1;height=%d;width=%d;preserveAspectRatio=%d:%s\a", nameBase64, imageDimensions.Max.Y, nameBase64, imageDimensions.Max.X, noStretch, imgBase64))
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// for width, height: "auto" || N: N character cells || Npx: N pixels || N%: N percent of terminal width/height
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wdgt.Block.ANSIString = fmt.Sprintf("\033[%d;%dH%s", imageDimensions.Min.Y, imageDimensions.Min.X, iterm2String)
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return nil
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}
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skipIterm2:
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return errors.New("no method applied for ANSI drawing")
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}
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