From 034be31159f22ce28d84994d541a45ee44963fd8 Mon Sep 17 00:00:00 2001 From: Thomas Hindoe Paaboel Andersen Date: Tue, 20 Jan 2015 00:44:40 +0100 Subject: Add "Resolution" option for mice to the evdev driver It can be used to scale the resolution of a mouse to that of a 1000 DPI mouse. This can be useful to make high resolution mice less sensitive without turning off acceleration. The target of 1000 DPI is used as the same default is used in libinput. If the option is not set no scaling will be done. https://bugs.freedesktop.org/show_bug.cgi?id=88134 Signed-off-by: Thomas Hindoe Paaboel Andersen Signed-off-by: Peter Hutterer --- src/evdev.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'src/evdev.c') diff --git a/src/evdev.c b/src/evdev.c index da25b56..17d9d61 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -25,6 +25,7 @@ * Adam Jackson (ajax@redhat.com) * Peter Hutterer (peter.hutterer@redhat.com) * Oliver McFadden (oliver.mcfadden@nokia.com) + * Thomas H.P. Andersen (phomes@gmail.com) */ #ifdef HAVE_CONFIG_H @@ -432,31 +433,36 @@ EvdevProcessValuators(InputInfoPtr pInfo) /* Apply transformations on relative coordinates */ if (pEvdev->rel_queued) { - int deltaX = 0, deltaY = 0; + double deltaX = 0, deltaY = 0; if (valuator_mask_isset(pEvdev->rel_vals, REL_X)) - deltaX = valuator_mask_get(pEvdev->rel_vals, REL_X); + deltaX = valuator_mask_get_double(pEvdev->rel_vals, REL_X); if (valuator_mask_isset(pEvdev->rel_vals, REL_Y)) - deltaY = valuator_mask_get(pEvdev->rel_vals, REL_Y); + deltaY = valuator_mask_get_double(pEvdev->rel_vals, REL_Y); if (pEvdev->swap_axes) { - int tmp = deltaX; + double tmp = deltaX; deltaX = deltaY; deltaY = tmp; } + if (pEvdev->resolution > 0) { + deltaX *= DEFAULT_MOUSE_DPI / pEvdev->resolution; + deltaY *= DEFAULT_MOUSE_DPI / pEvdev->resolution; + } + if (pEvdev->invert_x) deltaX *= -1; if (pEvdev->invert_y) deltaY *= -1; if (deltaX) - valuator_mask_set(pEvdev->rel_vals, REL_X, deltaX); + valuator_mask_set_double(pEvdev->rel_vals, REL_X, deltaX); else valuator_mask_unset(pEvdev->rel_vals, REL_X); if (deltaY) - valuator_mask_set(pEvdev->rel_vals, REL_Y, deltaY); + valuator_mask_set_double(pEvdev->rel_vals, REL_Y, deltaY); else valuator_mask_unset(pEvdev->rel_vals, REL_Y); @@ -2293,6 +2299,12 @@ EvdevProbe(InputInfoPtr pInfo) pEvdev->invert_y = xf86SetBoolOption(pInfo->options, "InvertY", FALSE); pEvdev->swap_axes = xf86SetBoolOption(pInfo->options, "SwapAxes", FALSE); + pEvdev->resolution = xf86SetIntOption(pInfo->options, "Resolution", 0); + if (pEvdev->resolution < 0) { + xf86IDrvMsg(pInfo, X_ERROR, "Resolution must be a positive number"); + pEvdev->resolution = 0; + } + str = xf86CheckStrOption(pInfo->options, "Calibration", NULL); if (str) { num_calibration = sscanf(str, "%d %d %d %d", -- cgit v1.2.3