1 files changed, 64 insertions, 4 deletions
diff --git a/image.go b/image.go
index 7fc47d1..d3867bb 100644
--- a/image.go
+++ b/image.go
@@ -24,6 +24,8 @@ import (
 	"time"
 )
 
+var imageSwitchCallbacks []func()
+
 var imageMenu = &fyne.MenuItem{
 	ChildMenu: &fyne.Menu{
 		Label: "Image",
@@ -433,8 +435,8 @@ func setPage(page int) {
 	if gallery, err := makePageView(page); err != nil {
 		dialog.ShowError(err, window)
 	} else {
-		mainWindowContentMutex.Lock()
-		defer mainWindowContentMutex.Unlock()
+		giantLock.Lock()
+		defer giantLock.Unlock()
 		setContent(gallery)
 		inPageView = true
 		currentPage = page
@@ -758,6 +760,46 @@ func makeImageView(image store.Image) (*fyne.Container, error) {
 			r.Disable()
 		}
 
+		var (
+			groupView    *container.Scroll
+			groupViewBox = container.NewGridWrap(fyne.Size{Width: 128, Height: 128})
+		)
+		groupView = container.NewHScroll(groupViewBox)
+		for _, e := range group {
+			eImg := &canvas.Image{
+				FillMode:  canvas.ImageFillContain,
+				ScaleMode: canvas.ImageScaleFastest,
+			}
+			if res, err := e.resource(true); err != nil {
+				return nil, err
+			} else {
+				if e.image.Snowflake == entry.image.Snowflake {
+					if i, err := makeImageBorder(res.Content(), color.RGBA{R: 0x00, G: 0x00, B: 0xff, A: 0xff}, 0.03); err != nil {
+						return nil, err
+					} else {
+						eImg.Image = i
+					}
+				} else {
+					eImg.Resource = res
+				}
+			}
+
+			groupViewBox.Add(newImageButton(eImg, e.image))
+			log.Printf("Added image %s to group view of %s.", e.image.Snowflake, entry.image.Snowflake)
+		}
+		groupViewDiag := dialog.NewCustom("Image group", "Close", groupView, window)
+		groupViewDiag.Resize(fyne.Size{Width: window.Content().Size().Width - 16})
+		groupView.SetMinSize(fyne.Size{Height: 128})
+
+		var groupViewToggle *widget.Button
+		groupViewToggle = widget.NewButton("Show group", func() {
+			groupViewDiag.Show()
+		})
+		ops.Add(groupViewToggle)
+		registerImageSwitchCallback(func() {
+			groupViewDiag.Hide()
+		})
+
 		border = container.NewBorder(ops, container.NewBorder(nil, nil, b, r), nil, nil,
 			container.NewBorder(widget.NewSeparator(), nil, nil, nil, lf))
 	}
@@ -767,15 +809,33 @@ func makeImageView(image store.Image) (*fyne.Container, error) {
 
 func setImage(image store.Image) {
 	defer loading("Loading", "Loading image...")()
+	func() {
+		giantLock.Lock()
+		defer giantLock.Unlock()
+
+		// Fire callbacks
+		for i, f := range imageSwitchCallbacks {
+			log.Printf("Firing image switch callback %v.", i)
+			f()
+		}
+		imageSwitchCallbacks = []func(){}
+	}()
+
 	if img, err := makeImageView(image); err != nil {
 		dialog.ShowError(err, window)
 	} else {
-		mainWindowContentMutex.Lock()
-		defer mainWindowContentMutex.Unlock()
 		setContent(img)
 	}
 }
 
+func registerImageSwitchCallback(f func()) {
+	giantLock.Lock()
+	defer giantLock.Unlock()
+
+	log.Printf("Registering image switch callback.")
+	imageSwitchCallbacks = append(imageSwitchCallbacks, f)
+}
+
 func addImage(path string, reader io.ReadCloser) {
 	s := time.Now()
 	if img, err := remote.ImageAdd(reader); err != nil {