On Linux under X11, and under XWayland, winit 0.30 hands a drawing
tablet's pen to the window as a mouse without its pressure. Every pen
stroke reached the tools at full pressure: a Calligraphic brush with
Size on Pressure drew one width, and the Liquify tools' Use Pressure
Pen applied full intensity.
When the window is on X11, the desktop app now reads XInput2 raw
events on a second X connection (x11rb's RustConnection, without
unsafe). A device with an "Abs Pressure" valuator is a pen, unless
its XInput type is TOUCHPAD or TOUCHSCREEN. Its pressure, scaled from
the valuator's range to 0..1, goes into Services::stylus, and another
pointer moving clears it. The canvas uses that pressure when a frame
has no touch force. A press takes the highest pressure of the pen's
latest touch since the canvas last read the feed, and waits up to
5 ms for the touch of a hovering pen. The moves and the release of a
held press keep the pressure the pen last touched with when its lift
has already arrived. Native Wayland is unchanged.
The valuator mapping and the reader come from PhotoCraft's tablet
crate (storytold/photocraft#255), with the pressure axis only.
Docs: README.md, docs/development.md, docs/hardware-parity.md,
docs/target-app-parity.md.
On a Wayland session a drawing tablet's pen could not draw or click:
winit 0.30 does not bind the Wayland tablet protocol, and neither KWin
(since Plasma 6.3) nor GNOME's Mutter turns tablet input into pointer
input. Linux Display Server's X11 (XWayland) choice let the pen work as
a mouse, but it opened the window through XWayland on every start, also
without a tablet.
Linux Display Server has a third choice, X11 (XWayland) When a Pen Is
Attached (x11WithPen). It opens the window through XWayland on a
Wayland session only when /proc/bus/input/devices lists a pen as the
app starts: a device with the BTN_TOOL_PEN key and the ABS_X and ABS_Y
axes, the check PhotoCraft's tablet.rs makes. Automatic stays the
default. On Linux the Performance page shows a note for tablet pens
that don't draw.
README.md named KDE alone; the KWin commit's message says Mutter does
not emulate tablet events either, so README.md and docs/development.md
now name GNOME. The Pen pressure row of docs/hardware-parity.md said
Linux has pressure through XWayland; winit 0.30 reports none on X11
either.
Docs: README.md, docs/development.md, docs/hardware-parity.md,
docs/target-app-parity.md.
A two-finger rotation on a Mac trackpad did not turn the view. With
the new General preference Trackpad Gesture to Rotate View
(`trackpadRotateView`, on by default) and the pointer over the canvas,
the rotation turns the view about the pointer, keeping the document
point under it in place. The view does not turn until the rotation
reaches 5°; it then turns by the whole rotation and follows each later
rotation event. A rotation ends 0.25 s after its last event. A rotation
in the same frame as a pinch zooms and turns about the same point.
egui reports the gesture as `Event::Rotate`: egui-winit makes it from
winit's macOS rotation gesture, and eframe makes it from Safari's
gesture events in the web build. Rotation events that arrive while
fingers are on a touch screen do not turn the view. With the
preference off, the gesture does not turn the view.
Docs: docs/mcp.md, docs/target-app-parity.md, docs/hardware-parity.md.
winit 0.30 delivers no file drops on native Wayland. The new Linux Display
Server preference (Automatic / X11 (XWayland), shown on Linux only, read at
startup) has winit open the window on X11 when the session is Wayland,
DISPLAY is set and the X11 libraries winit loads are installed (ldconfig
check ported from PhotoCraft); otherwise the window opens on Wayland and
the log says why. README, development notes, parity docs, ROADMAP and the
complete catalogs updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, hardware, UI and localization parity docs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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