Image element for showing images

elements/basic/image.go

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+package basicElements
+
+import "image"
+import "git.tebibyte.media/sashakoshka/tomo/artist"
+import "git.tebibyte.media/sashakoshka/tomo/elements/core"
+
+type Image struct {
+	*core.Core
+	core core.CoreControl
+	buffer artist.Pattern
+}
+
+func NewImage (image image.Image) (element *Image) {
+	element = &Image { buffer: artist.NewTexture(image) }
+	element.Core, element.core = core.NewCore(element.draw)
+	bounds := image.Bounds()
+	element.core.SetMinimumSize(bounds.Dx(), bounds.Dy())
+	return
+}
+
+func (element *Image) draw () {
+	artist.FillRectangle(element, element.buffer, element.Bounds())
+}

examples/image/image.go

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+package main
+
+import "os"
+import "image"
+import "bytes"
+import _ "image/png"
+import "github.com/jezek/xgbutil/gopher"
+import "git.tebibyte.media/sashakoshka/tomo"
+import "git.tebibyte.media/sashakoshka/tomo/popups"
+import "git.tebibyte.media/sashakoshka/tomo/layouts/basic"
+import "git.tebibyte.media/sashakoshka/tomo/elements/basic"
+import _ "git.tebibyte.media/sashakoshka/tomo/backends/x"
+
+func main () {
+	tomo.Run(run)
+}
+
+func run () {
+	window, _ := tomo.NewWindow(2, 2)
+	window.SetTitle("Tomo Logo")
+
+	file, err := os.Open("assets/banner.png")
+	if err != nil { fatalError(err); return  }
+	logo, _, err := image.Decode(file)
+	file.Close()
+	if err != nil { fatalError(err); return  }
+
+	container := basicElements.NewContainer(basicLayouts.Vertical { true, true })
+	logoImage := basicElements.NewImage(logo)
+	button    := basicElements.NewButton("Show me a gopher instead")
+	button.OnClick (func () { container.Warp (func () {
+			container.DisownAll()
+			gopher, _, err :=
+				image.Decode(bytes.NewReader(gopher.GopherPng()))
+			if err != nil { fatalError(err); return }
+			container.Adopt(basicElements.NewImage(gopher),true)
+	}) })
+
+	container.Adopt(logoImage, true)
+	container.Adopt(button, false)
+	window.Adopt(container)
+
+	button.Focus()
+	
+	window.OnClose(tomo.Stop)
+	window.Show()
+}
+
+func fatalError (err error) {
+	popups.NewDialog (
+		popups.DialogKindError,
+		"Error",
+		err.Error(),
+		popups.Button {
+			Name: "OK",
+			OnPress: tomo.Stop,
+		})
+}