From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h | 72 ++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h (limited to 'contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h') diff --git a/contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h b/contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h new file mode 100644 index 0000000..de75181 --- /dev/null +++ b/contrib/SDL-3.2.8/src/video/x11/SDL_x11pen.h @@ -0,0 +1,72 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#ifndef SDL_x11pen_h_ +#define SDL_x11pen_h_ + +// Pressure-sensitive pen support for X11. + +#include "SDL_x11video.h" +#include "../../events/SDL_pen_c.h" + +// Prep pen support (never fails; pens simply won't be added if there's a problem). +extern void X11_InitPen(SDL_VideoDevice *_this); + +// Clean up pen support. +extern void X11_QuitPen(SDL_VideoDevice *_this); + +#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2 + +// Forward definition for SDL_x11video.h +struct SDL_VideoData; + +#define SDL_X11_PEN_AXIS_VALUATOR_MISSING -1 + +typedef struct X11_PenHandle +{ + SDL_PenID pen; + bool is_eraser; + int x11_deviceid; + int valuator_for_axis[SDL_PEN_AXIS_COUNT]; + float slider_bias; // shift value to add to PEN_AXIS_SLIDER (before normalisation) + float rotation_bias; // rotation to add to PEN_AXIS_ROTATION (after normalisation) + float axis_min[SDL_PEN_AXIS_COUNT]; + float axis_max[SDL_PEN_AXIS_COUNT]; +} X11_PenHandle; + +// Converts XINPUT2 valuators into pen axis information, including normalisation. +extern void X11_PenAxesFromValuators(const X11_PenHandle *pen, + const double *input_values, const unsigned char *mask, int mask_len, + float axis_values[SDL_PEN_AXIS_COUNT]); + +// Add a pen (if this function's further checks validate it). +extern X11_PenHandle *X11_MaybeAddPenByDeviceID(SDL_VideoDevice *_this, int deviceid); + +// Remove a pen. It's okay if deviceid is bogus or not a pen, we'll check it. +extern void X11_RemovePenByDeviceID(int deviceid); + +// Map X11 device ID to pen ID. +extern X11_PenHandle *X11_FindPenByDeviceID(int deviceid); + +#endif // SDL_VIDEO_DRIVER_X11_XINPUT2 + +#endif // SDL_x11pen_h_ -- cgit v1.2.3