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KASM-1871 Add smooth scrolling

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Previously all scrolling relied on "clicking" the up/down or left/right scroll buttons
which made it unprecise and to always scroll at the same speed.

Now we pass the scroll delta directly to the xorg input driver so the scroll is more responsinve and adaptive.
This commit is contained in:
Mariusz Marciniak
2021-09-16 04:10:19 -07:00
parent 3f3d31312c
commit 0a45fcc700
10 changed files with 48 additions and 14 deletions
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30
unix/xserver/hw/vnc/Input.c
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@@ -234,6 +234,14 @@ void vncPointerMove(int x, int y)
cursorPosY = y;
}
void vncScroll(int x, int y) {
ValuatorMask mask;
valuator_mask_zero(&mask);
valuator_mask_set(&mask, 2, x);
valuator_mask_set(&mask, 3, y);
QueuePointerEvents(vncPointerDev, MotionNotify, 0, POINTER_RELATIVE, &mask);
}
void vncGetPointerPos(int *x, int *y)
{
if (vncPointerDev != NULL) {
@@ -261,7 +269,7 @@ static int vncPointerProc(DeviceIntPtr pDevice, int onoff)
* is not a bug.
*/
Atom btn_labels[BUTTONS];
Atom axes_labels[2];
Atom axes_labels[4];
switch (onoff) {
case DEVICE_INIT:
@@ -278,11 +286,29 @@ static int vncPointerProc(DeviceIntPtr pDevice, int onoff)
axes_labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X);
axes_labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y);
axes_labels[2] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_HSCROLL);
axes_labels[3] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_VSCROLL);
InitPointerDeviceStruct(pDev, map, BUTTONS, btn_labels,
(PtrCtrlProcPtr)NoopDDA,
GetMotionHistorySize(),
2, axes_labels);
4, axes_labels);
InitValuatorAxisStruct(pDevice, 2, axes_labels[2], NO_AXIS_LIMITS, NO_AXIS_LIMITS, 0, 0, 0, Relative);
InitValuatorAxisStruct(pDevice, 3, axes_labels[3], NO_AXIS_LIMITS, NO_AXIS_LIMITS, 0, 0, 0, Relative);
char* envScrollFactorH = getenv("SCROLL_FACTOR_H");
char* envScrollFactorV = getenv("SCROLL_FACTOR_V");
float scrollFactorH = envScrollFactorH ? atof(envScrollFactorH) : 50.0;
float scrollFactorV = envScrollFactorV ? atof(envScrollFactorV) : 50.0;
LOG_INFO("Mouse horizonatl scroll factor: %f", scrollFactorH);
LOG_INFO("Mouse vertical scroll factor: %f", scrollFactorV);
SetScrollValuator(pDevice, 2, SCROLL_TYPE_HORIZONTAL, scrollFactorH, SCROLL_FLAG_NONE);
SetScrollValuator(pDevice, 3, SCROLL_TYPE_VERTICAL, scrollFactorV, SCROLL_FLAG_PREFERRED);
break;
case DEVICE_ON:
pDev->on = TRUE;