From b02c7819a6dcc0d62a0e9135d439f9352f5c80ce Mon Sep 17 00:00:00 2001
From: Niki Roo <niki@nikiroo.be>
Date: Tue, 16 Apr 2019 19:12:50 +0200
Subject: [PATCH] GUI: fix keyboard up/down in lib

---
 .../reader/ui/GuiReaderCoverImager.java       | 23 ++++++++++++++++---
 .../fanfix/reader/ui/GuiReaderGroup.java      | 11 +++++++--
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/src/be/nikiroo/fanfix/reader/ui/GuiReaderCoverImager.java b/src/be/nikiroo/fanfix/reader/ui/GuiReaderCoverImager.java
index 0bbf82eb..f46ec1bb 100644
--- a/src/be/nikiroo/fanfix/reader/ui/GuiReaderCoverImager.java
+++ b/src/be/nikiroo/fanfix/reader/ui/GuiReaderCoverImager.java
@@ -129,6 +129,24 @@ class GuiReaderCoverImager {
 		return generateCoverIcon(lib, GuiReaderBookInfo.fromMeta(meta));
 	}
 
+	/**
+	 * The width of a cover image.
+	 * 
+	 * @return the width
+	 */
+	static public int getCoverWidth() {
+		return SPINE_WIDTH + COVER_WIDTH;
+	}
+
+	/**
+	 * The height of a cover image.
+	 * 
+	 * @return the height
+	 */
+	static public int getCoverHeight() {
+		return COVER_HEIGHT + HOFFSET;
+	}
+
 	/**
 	 * Generate a cover icon based upon the given {@link GuiReaderBookInfo}.
 	 * 
@@ -158,9 +176,8 @@ class GuiReaderCoverImager {
 		if (resizedImage == null) {
 			try {
 				Image cover = info.getBaseImage(lib);
-				resizedImage = new BufferedImage(SPINE_WIDTH + COVER_WIDTH,
-						SPINE_HEIGHT + COVER_HEIGHT + HOFFSET,
-						BufferedImage.TYPE_4BYTE_ABGR);
+				resizedImage = new BufferedImage(getCoverWidth(),
+						getCoverHeight(), BufferedImage.TYPE_4BYTE_ABGR);
 
 				Graphics2D g = resizedImage.createGraphics();
 				try {
diff --git a/src/be/nikiroo/fanfix/reader/ui/GuiReaderGroup.java b/src/be/nikiroo/fanfix/reader/ui/GuiReaderGroup.java
index 7b154256..17bf43cb 100644
--- a/src/be/nikiroo/fanfix/reader/ui/GuiReaderGroup.java
+++ b/src/be/nikiroo/fanfix/reader/ui/GuiReaderGroup.java
@@ -179,8 +179,13 @@ public class GuiReaderGroup extends JPanel {
 	 * up/down one line at a time.
 	 */
 	private void computeItemsPerLine() {
-		// TODO
-		itemsPerLine = 5;
+		itemsPerLine = 1;
+
+		if (books != null && books.size() > 0) {
+			// this.pane holds all the books with a hgap of 5 px
+			int wbook = books.get(0).getWidth() + 5;
+			itemsPerLine = pane.getWidth() / wbook;
+		}
 	}
 
 	/**
@@ -270,6 +275,8 @@ public class GuiReaderGroup extends JPanel {
 		pane.repaint();
 		validate();
 		repaint();
+
+		computeItemsPerLine();
 	}
 
 	/**
-- 
2.27.0