mode portrait only

internal/epub/epub.go

@@ -299,10 +299,13 @@ func (e *ePub) Write() error {
 		if totalParts > 1 {
 			title = fmt.Sprintf("%s [%d/%d]", title, i+1, totalParts)
 		}
-		titleAlign := "left:0"
+		titleAlign := ""
+		if !e.Image.View.PortraitOnly {
+			titleAlign = "left:0"
 			if e.Image.Manga {
 				titleAlign = "right:0"
 			}
+		}
 
 		content := []zipContent{
 			{"META-INF/container.xml", epubtemplates.Container},
@@ -323,10 +326,7 @@ func (e *ePub) Write() error {
 			{"OEBPS/Text/style.css", e.render(epubtemplates.Style, map[string]any{
 				"View": e.Image.View,
 			})},
-			{"OEBPS/Text/space_title.xhtml", e.render(epubtemplates.Blank, map[string]any{
+
-				"Title":    "Blank Page Title",
-				"ViewPort": fmt.Sprintf("width=%d,height=%d", e.Image.View.Width, e.Image.View.Height),
-			})},
 			{"OEBPS/Text/title.xhtml", e.render(epubtemplates.Text, map[string]any{
 				"Title":      title,
 				"ViewPort":   fmt.Sprintf("width=%d,height=%d", e.Image.View.Width, e.Image.View.Height),
@@ -334,6 +334,14 @@ func (e *ePub) Write() error {
 				"ImageStyle": part.Cover.ImgStyle(e.Image.View.Width, e.Image.View.Height, titleAlign),
 			})},
 		}
+		if !e.Image.View.PortraitOnly {
+			content = append(content, zipContent{
+				"OEBPS/Text/space_title.xhtml", e.render(epubtemplates.Blank, map[string]any{
+					"Title":    "Blank Page Title",
+					"ViewPort": fmt.Sprintf("width=%d,height=%d", e.Image.View.Width, e.Image.View.Height),
+				}),
+			})
+		}
 
 		if err = wz.WriteMagic(); err != nil {
 			return err
@@ -367,7 +375,7 @@ func (e *ePub) Write() error {
 			}
 
 			// Double Page or Last Image that is not a double page
-			if img.DoublePage || (img.Part == 0 && img == lastImage) {
+			if !e.Image.View.PortraitOnly && (img.DoublePage || (img.Part == 0 && img == lastImage)) {
 				if err := e.writeBlank(wz, img); err != nil {
 					return err
 				}

internal/epub/templates/epub_templates_content.go

@@ -67,7 +67,12 @@ func Content(o *ContentOptions) string {
 	} else {
 		spine.CreateAttr("page-progression-direction", "ltr")
 	}
-	addToElement(spine, getSpine)
+
+	if o.ImageOptions.View.PortraitOnly {
+		addToElement(spine, getSpinePortrait)
+	} else {
+		addToElement(spine, getSpineAuto)
+	}
 
 	guide := pkg.CreateElement("guide")
 	addToElement(guide, getGuide)
@@ -82,9 +87,6 @@ func Content(o *ContentOptions) string {
 func getMeta(o *ContentOptions) []tag {
 	metas := []tag{
 		{"meta", tagAttrs{"property": "dcterms:modified"}, o.UpdatedAt},
-		{"meta", tagAttrs{"property": "rendition:layout"}, "pre-paginated"},
-		{"meta", tagAttrs{"property": "rendition:spread"}, "auto"},
-		{"meta", tagAttrs{"property": "rendition:orientation"}, "auto"},
 		{"meta", tagAttrs{"property": "schema:accessMode"}, "visual"},
 		{"meta", tagAttrs{"property": "schema:accessModeSufficient"}, "visual"},
 		{"meta", tagAttrs{"property": "schema:accessibilityHazard"}, "noFlashingHazard"},
@@ -102,6 +104,20 @@ func getMeta(o *ContentOptions) []tag {
 		{"dc:date", tagAttrs{}, o.UpdatedAt},
 	}
 
+	if o.ImageOptions.View.PortraitOnly {
+		metas = append(metas, []tag{
+			{"meta", tagAttrs{"property": "rendition:layout"}, "pre-paginated"},
+			{"meta", tagAttrs{"property": "rendition:spread"}, "none"},
+			{"meta", tagAttrs{"property": "rendition:orientation"}, "portrait"},
+		}...)
+	} else {
+		metas = append(metas, []tag{
+			{"meta", tagAttrs{"property": "rendition:layout"}, "pre-paginated"},
+			{"meta", tagAttrs{"property": "rendition:spread"}, "auto"},
+			{"meta", tagAttrs{"property": "rendition:orientation"}, "auto"},
+		}...)
+	}
+
 	if o.ImageOptions.Manga {
 		metas = append(metas, tag{"meta", tagAttrs{"name": "primary-writing-mode", "content": "horizontal-rl"}, ""})
 	} else {
@@ -142,18 +158,21 @@ func getManifest(o *ContentOptions) []tag {
 	items := []tag{
 		{"item", tagAttrs{"id": "toc", "href": "toc.xhtml", "properties": "nav", "media-type": "application/xhtml+xml"}, ""},
 		{"item", tagAttrs{"id": "css", "href": "Text/style.css", "media-type": "text/css"}, ""},
-		{"item", tagAttrs{"id": "space_title", "href": "Text/space_title.xhtml", "media-type": "application/xhtml+xml"}, ""},
 		{"item", tagAttrs{"id": "page_title", "href": "Text/title.xhtml", "media-type": "application/xhtml+xml"}, ""},
 		{"item", tagAttrs{"id": "img_title", "href": fmt.Sprintf("Images/title.%s", o.ImageOptions.Format), "media-type": fmt.Sprintf("image/%s", o.ImageOptions.Format)}, ""},
 	}
 
+	if !o.ImageOptions.View.PortraitOnly {
+		items = append(items, tag{"item", tagAttrs{"id": "space_title", "href": "Text/space_title.xhtml", "media-type": "application/xhtml+xml"}, ""})
+	}
+
 	if o.ImageOptions.HasCover || o.Current > 1 {
 		addTag(o.Cover, false)
 	}
 
 	lastImage := o.Images[len(o.Images)-1]
 	for _, img := range o.Images {
-		addTag(img, img.DoublePage || (img.Part == 0 && img == lastImage))
+		addTag(img, !o.ImageOptions.View.PortraitOnly && (img.DoublePage || (img.Part == 0 && img == lastImage)))
 	}
 
 	items = append(items, imageTags...)
@@ -164,7 +183,7 @@ func getManifest(o *ContentOptions) []tag {
 }
 
 // spine part of the content
-func getSpine(o *ContentOptions) []tag {
+func getSpineAuto(o *ContentOptions) []tag {
 	isOnTheRight := !o.ImageOptions.Manga
 	getSpread := func(isDoublePage bool) string {
 		isOnTheRight = !isOnTheRight
@@ -214,6 +233,20 @@ func getSpine(o *ContentOptions) []tag {
 	return spine
 }
 
+func getSpinePortrait(o *ContentOptions) []tag {
+	spine := []tag{
+		{"itemref", tagAttrs{"idref": "page_title"}, ""},
+	}
+	for _, img := range o.Images {
+		spine = append(spine, tag{
+			"itemref",
+			tagAttrs{"idref": img.PageKey()},
+			"",
+		})
+	}
+	return spine
+}
+
 // guide part of the content
 func getGuide(o *ContentOptions) []tag {
 	guide := []tag{}