Chapter 5 — Viewing & Readers
Chapter 5 — Viewing & Readers
5.1 View Menu
“View (V)” controls display options (screenshot in Chapter 2):
| Item | Shortcut | Description |
|---|---|---|
| Show File Tree | Ctrl+B | Toggle the file tree panel |
| Show Line Numbers | — | Toggle the gutter (persisted) |
| Fold All / Unfold All | Ctrl+K Ctrl+0 / Ctrl+K Ctrl+J | Code folding |
| Toggle Word Wrap | Alt+Z | Wrap long lines (persisted) |
| HEX Mode | — | Hexadecimal view |
| Zoom In/Out/Reset | Ctrl+= / Ctrl+- / Ctrl+0 | Editor font zoom |
5.2 Markdown Preview
Open a .md file and click the toolbar’s “Toggle Preview” button (click
again to return to source mode) — the editor area becomes a rendered
Markdown preview:
The preview renders headings, lists, code blocks, links, bold/emphasis, and other common constructs, and honors the reader typography settings (line height, paragraph spacing, etc. — see Chapter 7).
5.3 Document Reader
Double-click a PDF, EPUB, CHM, or Word/Excel document to open it in the built-in reader tab. For PDF:
Reader features:
- View modes: continuous scroll / single page / double page (spread).
- Vector rendering: PDFs are drawn as vectors — zoom stays crisp.
- EPUB: chapter navigation and in-book search.
- CHM: Contents / Index / full-text Search tabs.
- Office: Word/Excel document model rendering (paragraph alignment, font sizes/colors, tables).
- Reading comfort: invert (night mode), brightness, text/background colors, line height, paragraph spacing, letter spacing, and text alignment (see the Reader page of the settings dialog).
- Auto scroll: hands-free scrolling at a configurable speed.
- Reader tabs show the page number and paging controls; the status bar shows current/total pages.
5.4 Image Editor
Double-click a PNG/JPEG/SVG to open it in the image editor tab:
Capabilities:
- Viewing: zoom and pan; the status bar shows format and dimensions.
- Adjustments: crop and resize dialog.
- Drawing: brush, eraser, color picker, and a text tool (text is edited as an overlay and baked into the image on save).
- Filters: twenty-plus one-click filters — grayscale, invert, vintage, sepia, blur, sharpen, emboss, edge detect (Sobel), duotone, halftone, oil paint, LO-Fi, dramatic, golden, violet duotone, obsidian, brighten/darken, calibrate, vignette, and more.
- Export: save-as (with alpha channel export).
The toolbar switches to image tools for image tabs; undo/redo work as usual.