fix position

internal/pkg/converter/options.go

@@ -1,4 +1,4 @@
-// Package options manage options with default value from config.
+// Package converter options manage options with default value from config.
 package converter
 
 import (

internal/pkg/converter/profiles.go

@@ -1,4 +1,4 @@
-// Package profiles manage supported profiles for go-comic-converter.
+// Package converter profiles manage supported profiles for go-comic-converter.
 package converter
 
 import (

internal/pkg/epub/epub.go

@@ -312,9 +312,10 @@ func (e EPUB) computeAspectRatio(epubParts []epubPart) float64 {
 	return bestAspectRatio
 }
 
-func (e EPUB) computeViewPort(epubParts []epubPart) {
+func (e EPUB) computeViewPort(epubParts []epubPart) (int, int) {
 	if e.Image.View.AspectRatio == -1 {
-		return //keep device size
+		//keep device size
+		return e.Image.View.Width, e.Image.View.Height
 	}
 
 	// readjusting view port
@@ -325,9 +326,9 @@ func (e EPUB) computeViewPort(epubParts []epubPart) {
 
 	viewWidth, viewHeight := int(float64(e.Image.View.Height)/bestAspectRatio), int(float64(e.Image.View.Width)*bestAspectRatio)
 	if viewWidth > e.Image.View.Width {
-		e.Image.View.Height = viewHeight
+		return e.Image.View.Width, viewHeight
 	} else {
-		e.Image.View.Width = viewWidth
+		return viewWidth, e.Image.View.Height
 	}
 }
 
@@ -445,7 +446,7 @@ func (e EPUB) Write() error {
 		Json:        e.Json,
 	})
 
-	e.computeViewPort(epubParts)
+	e.Image.View.Width, e.Image.View.Height = e.computeViewPort(epubParts)
 	for i, part := range epubParts {
 		ext := filepath.Ext(e.Output)
 		suffix := ""

internal/pkg/epuboptions/epub_options.go

@@ -1,4 +1,4 @@
-// Package epuboptions EPUBOptions for EPUB creation.
+// Package epuboptions for EPUB creation.
 package epuboptions
 
 type EPUBOptions struct {

internal/pkg/epubtemplates/content.go

@@ -227,7 +227,7 @@ func (o Content) getSpineAuto() []tag {
 			)
 		}
 	}
-	for _, img := range o.Images {
+	for i, img := range o.Images {
 		if (img.DoublePage || img.Part == 1) && o.ImageOptions.Manga == isOnTheRight {
 			spine = append(spine, tag{
 				"itemref",
@@ -242,6 +242,8 @@ func (o Content) getSpineAuto() []tag {
 			tagAttrs{"idref": img.PageKey(), "properties": img.Position},
 			"",
 		})
+		// save position, img is a value type
+		o.Images[i] = img
 	}
 	if o.ImageOptions.Manga == isOnTheRight {
 		spine = append(spine, tag{