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ResearchLoom v4.3.4 - Xiaomi Pad 7 Dynamic Scaling, Dual Eraser & Stylus Scheme

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@github-actions github-actions released this 02 Nov 18:20
· 32 commits to main since this release
v4.3.4
ad3d4c2

Highlights

ResearchLoom v4.3.4 introduces dedicated responsive scaling and hardware optimization for Android tablets (specifically the Xiaomi Pad 7 with a 3:2 aspect ratio, 2880×1800 resolution), Dual-Mode Erasers (Stroke Eraser vs. Pixel Eraser), and hardware integration for the Xiaomi Smart Pen 2 / Focus Pen barrel button scheme.

What Changed in v4.3.4

1. Dynamic Tablet Scaling & Orientation Adaptation

  • Xiaomi Pad 7 (3:2 Aspect Ratio) & All Tablet Ratios: Dynamically scales and recalculates canvas layout in both vertical (portrait) and landscape orientations.
  • Zero UI Truncation: Eliminated header and toolbar button clipping. On tablet viewports (width < 1280px), the sidebar auto-collapses by default with a quick-toggle button in the header, and redundant secondary badges are cleanly collapsed.
  • Dynamic DPR-Aware Canvas: Drawing coordinate matrix scales precisely to window.devicePixelRatio during orientation changes.

2. Dual-Engine Eraser

  • Stroke Eraser: High-precision vector line intersection calculation using segment-distance algorithms (distToSegment), instantly deleting entire intersected strokes on contact.
  • Pixel Eraser: Raster canvas erasure using destination-out composite operation, enabling pixel-perfect partial erasing and fine-tuned formula cleanup.
  • Sub-Menu Selector: Toggle between Stroke and Pixel eraser modes directly from the toolbar or via stylus secondary click.

3. Xiaomi Smart Pen & Stylus Hardware Button Scheme

  • Native Android Key Interception (MainActivity.java):
  • Captures KEYCODE_PAGE_UP (92) and KEYCODE_PAGE_DOWN (93) emitted by Xiaomi Smart Pen 2 / Focus Pen barrel buttons.
  • Intercepts MotionEvent.ACTION_BUTTON_PRESS for BUTTON_STYLUS_PRIMARY and BUTTON_STYLUS_SECONDARY.
  • Bridges hardware events directly into the web canvas via custom events and window.handleStylusButton without unwanted browser scrolling.
  • Hardware Button Toggle: Holding or clicking the physical pen barrel button toggles the eraser mode on the fly while sketching.

Assets Included

  • ResearchLoom-android-tablet.apk: Dedicated standalone APK for Android tablets.
  • ResearchLoom.exe: Standalone Windows desktop build.
  • ResearchLoom-windows-x64.zip: Portable zip package for Windows.
  • ResearchLoom-macOS-arm64.dmg: Drag-and-drop installer for Apple Silicon macOS.
Assets 6
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