Attachment 19039 Details for Bug 17681 – Patch which adds Sensitivity option to evdev

[patch] Patch which adds Sensitivity option to evdev

evdev-sensitivity.patch (text/plain), 2.11 KB, created by Olav Morken on 2008-09-20 09:13:01 UTC

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Creator: Olav Morken

Created: 2008-09-20 09:13:01 UTC

Size: 2.11 KB

patch

obsolete

>diff --git a/man/evdev.man b/man/evdev.man
>index 530f979..f34d19c 100644
>--- a/man/evdev.man
>+++ b/man/evdev.man
>@@ -71,6 +71,11 @@ enabled.  Default: 50.
> .BI "Option \*qReopenAttempts\*q \*q" integer \*q
> Number of reopen attempts after a read error occurs on the device (e.g. after
> waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
>+.TP 7
>+.BI "Option \*qSensitivity\*q \*q" float \*q
>+Multiply mouse movements by this number. Can be used to slow the mouse down
>+(by specifying a number between 0.0 and 1.0), or to speed the mouse up (by
>+specifying a number greater than 1.0). Default: 1.0
> 
> .SH AUTHORS
> Kristian HÃ¸gsberg.
>diff --git a/src/evdev.c b/src/evdev.c
>index c0fe244..fc732f7 100644
>--- a/src/evdev.c
>+++ b/src/evdev.c
>@@ -360,8 +360,18 @@ EvdevReadInput(InputInfoPtr pInfo)
> 	}
>     }
> 
>-    if (dx != 0 || dy != 0)
>+    if (dx != 0 || dy != 0) {
>+
>+        /* Adjust for mouse sensitivity. */
>+        pEvdev->fracx += dx * pEvdev->sensitivity;
>+        dx = (int)pEvdev->fracx;
>+        pEvdev->fracx -= dx;
>+        pEvdev->fracy += dy * pEvdev->sensitivity;
>+        dy = (int)pEvdev->fracy;
>+        pEvdev->fracy -= dy;
>+
>         xf86PostMotionEvent(pInfo->dev, FALSE, 0, 2, dx, dy);
>+    }
> 
>     /*
>      * Some devices only generate valid abs coords when BTN_DIGI is
>@@ -1272,6 +1282,9 @@ EvdevPreInit(InputDriverPtr drv, IDevPtr dev, int flags)
>      */
>     pEvdev->tool = 1;
> 
>+    pEvdev->sensitivity = xf86SetRealOption(pInfo->options, "Sensitivity", 1.0);
>+    xf86Msg(X_CONFIG, "%s: Sensitivity: %f\n", pInfo->name, pEvdev->sensitivity);
>+
>     device = xf86CheckStrOption(dev->commonOptions, "Path", NULL);
>     if (!device)
> 	device = xf86CheckStrOption(dev->commonOptions, "Device", NULL);
>diff --git a/src/evdev.h b/src/evdev.h
>index 9f16b81..2f69735 100644
>--- a/src/evdev.h
>+++ b/src/evdev.h
>@@ -83,6 +83,10 @@ typedef struct {
>     long abs_bitmask[NBITS(ABS_MAX)];
>     long led_bitmask[NBITS(LED_MAX)];
>     struct input_absinfo absinfo[ABS_MAX];
>+
>+    /* Mouse sensitivity. */
>+    float sensitivity;
>+    float fracx, fracy;
> } EvdevRec, *EvdevPtr;
> 
> /* Middle Button emulation */

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