changed image display

main.go

@@ -943,11 +943,58 @@ func main() {
 		tabs,
 	)
 
-	right := container.NewGridWithRows(3,
-		canvasImg,
-		heightmapImg,
-		bumpmapImg,
-	)
+	right := container.NewMax()
+	var tappableCanvas, tappableHeightmap, tappableBumpmap *tappableImage
+
+	updateRightPanel := func() {
+		var top, bottom fyne.CanvasObject
+		switch settings.ImageViewState {
+		case 1:
+			top = tappableCanvas
+			bottom = container.NewGridWithColumns(2, tappableHeightmap, tappableBumpmap)
+		case 2:
+			top = tappableHeightmap
+			bottom = container.NewGridWithColumns(2, tappableCanvas, tappableBumpmap)
+		case 3:
+			top = tappableBumpmap
+			bottom = container.NewGridWithColumns(2, tappableCanvas, tappableHeightmap)
+		default:
+			right.Objects = []fyne.CanvasObject{container.NewGridWithRows(3, tappableCanvas, tappableHeightmap, tappableBumpmap)}
+			right.Refresh()
+			return
+		}
+		split := container.NewVSplit(top, bottom)
+		split.Offset = 0.8
+		right.Objects = []fyne.CanvasObject{split}
+		right.Refresh()
+	}
+
+	tappableCanvas = newTappableImage(container.NewMax(canvasImg), func() {
+		if settings.ImageViewState == 1 {
+			settings.ImageViewState = 0
+		} else {
+			settings.ImageViewState = 1
+		}
+		updateRightPanel()
+	})
+	tappableHeightmap = newTappableImage(container.NewMax(heightmapImg), func() {
+		if settings.ImageViewState == 2 {
+			settings.ImageViewState = 0
+		} else {
+			settings.ImageViewState = 2
+		}
+		updateRightPanel()
+	})
+	tappableBumpmap = newTappableImage(container.NewMax(bumpmapImg), func() {
+		if settings.ImageViewState == 3 {
+			settings.ImageViewState = 0
+		} else {
+			settings.ImageViewState = 3
+		}
+		updateRightPanel()
+	})
+
+	updateRightPanel()
 
 	split := container.NewHSplit(
 		left,

settings.go

@@ -56,6 +56,7 @@ type Settings struct {
 	// General settings
 	Seed           int64  `json:"seed"`
 	LastExportPath string `json:"last_export_path"`
+	ImageViewState int    `json:"image_view_state"`
 }
 
 // Save saves the current settings to a JSON file in the user's config directory.
@@ -141,6 +142,7 @@ func LoadSettings() (*Settings, error) {
 				MaxBuildingComplexity:   3,
 				BuildingComplexityRatio: 50,
 				LastExportPath:          homeDir,
+				ImageViewState:          0,
 			}, nil
 		}
 		return nil, err

tappable_image.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/widget"
+)
+
+type tappableImage struct {
+	widget.BaseWidget
+	image    *fyne.Container
+	onTapped func()
+}
+
+func newTappableImage(img *fyne.Container, tapped func()) *tappableImage {
+	ti := &tappableImage{
+		image:    img,
+		onTapped: tapped,
+	}
+	ti.ExtendBaseWidget(ti)
+	return ti
+}
+
+func (t *tappableImage) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(t.image)
+}
+
+func (t *tappableImage) Tapped(*fyne.PointEvent) {
+	if t.onTapped != nil {
+		t.onTapped()
+	}
+}