fix: adjust BookInfo landscape layout for side button hint gutters

In landscape CW/CCW the physical buttons are on the left/right side,
not the bottom. Reserve a horizontal gutter (sideButtonHintsWidth)
on the appropriate side and remove the bottom buttonHintsHeight
padding, following the established pattern from other activities.

Made-with: Cursor

chat-summaries/2026-03-09_05-00-summary.md

@@ -0,0 +1,27 @@
+# BookInfo: Landscape Button Hint Gutter Fix
+
+**Date**: 2026-03-09
+**Task**: Adjust BookInfo's content area and header placement in landscape orientations to account for button hints appearing on a side instead of the bottom.
+
+## Problem
+
+In landscape orientations the physical front buttons end up on a side of the screen (CW = left, CCW = right). BookInfo was reserving `buttonHintsHeight` at the bottom in all orientations, wasting vertical space in landscape and not accounting for the side gutter needed to avoid overlapping the side-drawn button hints.
+
+## Changes Made
+
+### `src/activities/home/BookInfoActivity.cpp`
+
+- **`buildLayout()`**: Added `hintGutterWidth` computation (`metrics.sideButtonHintsWidth` in landscape, 0 in portrait). Text wrapping width (`contentW`) now subtracts `hintGutterWidth`. Bottom padding for `contentHeight` uses only `verticalSpacing` in landscape (no `buttonHintsHeight` since there are no bottom hints).
+- **`render()`**: Added `isLandscapeCw`, `hintGutterWidth`, and `contentX` computations following the established codebase pattern. In CW, `contentX = hintGutterWidth` shifts all content right (hints on left). In CCW, `contentX = 0` and content width is reduced (hints on right). Cover X position offset by `contentX`. Field X offset by `contentX`. `contentBottom` no longer subtracts `buttonHintsHeight` in landscape. Header `fillRect` and `drawHeader` Rect both adjusted by `contentX` and `hintGutterWidth`.
+
+## Pattern Followed
+
+The established pattern from `LookedUpWordsActivity`, `DictionarySuggestionsActivity`, `EpubReaderMenuActivity`, and others:
+```cpp
+const int hintGutterWidth = isLandscape ? metrics.sideButtonHintsWidth : 0;
+const int contentX = isLandscapeCw ? hintGutterWidth : 0;
+```
+
+## Follow-up
+
+Ready for hardware testing in all 4 orientations.

src/activities/home/BookInfoActivity.cpp

@@ -141,6 +141,7 @@ void BookInfoActivity::buildLayout(const BookMetadataCache::BookMetadata& meta,
   const auto& metrics = UITheme::getInstance().getMetrics();
   const int pageW = renderer.getScreenWidth();
   const int sidePad = metrics.contentSidePadding;
+  const int hintGutterWidth = isLandscape ? metrics.sideButtonHintsWidth : 0;
 
   if (!coverBmpPath.empty()) {
     FsFile file;
@@ -159,9 +160,10 @@ void BookInfoActivity::buildLayout(const BookMetadataCache::BookMetadata& meta,
     coverPanelWidth = std::min(coverDisplayWidth + sidePad * 2, pageW * 2 / 5);
   }
 
-  const int contentW = isLandscape && coverPanelWidth > 0
-                            ? pageW - coverPanelWidth - sidePad
-                            : pageW - sidePad * 2;
+  const int availW = pageW - hintGutterWidth;
+  const int contentW = (isLandscape && coverPanelWidth > 0)
+                            ? availW - coverPanelWidth - sidePad
+                            : availW - sidePad * 2;
 
   fields.reserve(13);
 
@@ -225,7 +227,7 @@ void BookInfoActivity::buildLayout(const BookMetadataCache::BookMetadata& meta,
     h += static_cast<int>(field.lines.size()) * lineH12;
     h += SECTION_GAP;
   }
-  h += metrics.buttonHintsHeight + metrics.verticalSpacing;
+  h += isLandscape ? metrics.verticalSpacing : (metrics.buttonHintsHeight + metrics.verticalSpacing);
   contentHeight = h;
 }
 
@@ -270,8 +272,14 @@ void BookInfoActivity::render(RenderLock&&) {
   const int sidePad = metrics.contentSidePadding;
   const int lineH10 = renderer.getLineHeight(UI_10_FONT_ID);
   const int lineH12 = renderer.getLineHeight(UI_12_FONT_ID);
+
+  const bool isLandscapeCw = renderer.getOrientation() == GfxRenderer::Orientation::LandscapeClockwise;
+  const int hintGutterWidth = isLandscape ? metrics.sideButtonHintsWidth : 0;
+  const int contentX = (isLandscape && isLandscapeCw) ? hintGutterWidth : 0;
+
   const int contentTop = metrics.topPadding + metrics.headerHeight + metrics.verticalSpacing;
-  const int contentBottom = pageH - metrics.buttonHintsHeight - metrics.verticalSpacing;
+  const int contentBottom = isLandscape ? pageH - metrics.verticalSpacing
+                                        : pageH - metrics.buttonHintsHeight - metrics.verticalSpacing;
 
   if (isLandscape && coverPanelWidth > 0 && !coverBmpPath.empty() && coverDisplayHeight > 0) {
     FsFile file;
@@ -279,14 +287,14 @@ void BookInfoActivity::render(RenderLock&&) {
       Bitmap bitmap(file);
       if (bitmap.parseHeaders() == BmpReaderError::Ok) {
         const int availH = contentBottom - contentTop;
-        const int coverX = (coverPanelWidth - coverDisplayWidth) / 2;
+        const int coverX = contentX + (coverPanelWidth - coverDisplayWidth) / 2;
         renderer.drawBitmap1Bit(bitmap, coverX, contentTop, coverDisplayWidth, availH);
       }
       file.close();
     }
   }
 
-  const int fieldX = (isLandscape && coverPanelWidth > 0) ? coverPanelWidth : sidePad;
+  const int fieldX = (isLandscape && coverPanelWidth > 0) ? contentX + coverPanelWidth : contentX + sidePad;
   int y = contentTop - scrollOffset;
 
   if (!isLandscape && !coverBmpPath.empty() && coverDisplayHeight > 0) {
@@ -325,8 +333,9 @@ void BookInfoActivity::render(RenderLock&&) {
     y += SECTION_GAP;
   }
 
-  renderer.fillRect(0, 0, pageW, contentTop, false);
-  GUI.drawHeader(renderer, Rect(0, metrics.topPadding, pageW, metrics.headerHeight), tr(STR_BOOK_INFO));
+  renderer.fillRect(contentX, 0, pageW - hintGutterWidth, contentTop, false);
+  GUI.drawHeader(renderer, Rect(contentX, metrics.topPadding, pageW - hintGutterWidth, metrics.headerHeight),
+                 tr(STR_BOOK_INFO));
 
   const bool canScrollDown = scrollOffset + pageH < contentHeight;
   const bool canScrollUp = scrollOffset > 0;