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Sum consecutive dx and dy motion events received separartely from

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the kernel before sending them up to X. Reduces staircacse effects
on diagonal freehand drawings. Patch from Henri Kemppainen, tested
by edd@. Thanks.
This commit is contained in:
matthieu 2013-07-20 13:24:50 +00:00
parent 2673d4da6b
commit 1449a85f9c
1 changed files with 35 additions and 13 deletions
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48
driver/xf86-input-ws/src/ws.c
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@ -13,7 +13,7 @@
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $OpenBSD: ws.c,v 1.57 2012/07/08 14:22:03 shadchin Exp $ */
/* $OpenBSD: ws.c,v 1.58 2013/07/20 13:24:50 matthieu Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
@ -474,7 +474,7 @@ wsReadInput(InputInfoPtr pInfo)
{
WSDevicePtr priv = (WSDevicePtr)pInfo->private;
static struct wscons_event eventList[NUMEVENTS];
int n, c;
int n, c, dx, dy;
struct wscons_event *event = eventList;
unsigned char *pBuf;
@ -488,10 +488,11 @@ wsReadInput(InputInfoPtr pInfo)
if (n == 0)
return;
dx = dy = 0;
n /= sizeof(struct wscons_event);
while (n--) {
int buttons = priv->lastButtons;
int dx = 0, dy = 0, dz = 0, dw = 0, ax = 0, ay = 0;
int newdx = 0, newdy = 0, dz = 0, dw = 0, ax = 0, ay = 0;
int zbutton = 0, wbutton = 0;
switch (event->type) {
@ -506,11 +507,17 @@ wsReadInput(InputInfoPtr pInfo)
buttons));
break;
case WSCONS_EVENT_MOUSE_DELTA_X:
dx = event->value;
if (!dx)
dx = event->value;
else
newdx = event->value;
DBG(4, ErrorF("Relative X %d\n", event->value));
break;
case WSCONS_EVENT_MOUSE_DELTA_Y:
dy = -event->value;
if (!dy)
dy = -event->value;
else
newdy = -event->value;
DBG(4, ErrorF("Relative Y %d\n", event->value));
break;
case WSCONS_EVENT_MOUSE_ABSOLUTE_X:
@ -548,14 +555,20 @@ wsReadInput(InputInfoPtr pInfo)
}
++event;
if (dx || dy) {
if (wsWheelEmuFilterMotion(pInfo, dx, dy))
if ((newdx || newdy) || ((dx || dy) &&
event->type != WSCONS_EVENT_MOUSE_DELTA_X &&
event->type != WSCONS_EVENT_MOUSE_DELTA_Y)) {
int tmpx = dx, tmpy = dy;
dx = newdx;
dy = newdy;
if (wsWheelEmuFilterMotion(pInfo, tmpx, tmpy))
continue;
/* relative motion event */
DBG(3, ErrorF("postMotionEvent dX %d dY %d\n",
dx, dy));
xf86PostMotionEvent(pInfo->dev, 0, 0, 2, dx, dy);
tmpx, tmpy));
xf86PostMotionEvent(pInfo->dev, 0, 0, 2, tmpx, tmpy);
}
if (dz && priv->Z.negative != WS_NOMAP
&& priv->Z.positive != WS_NOMAP) {
@ -583,9 +596,9 @@ wsReadInput(InputInfoPtr pInfo)
ay = tmp;
}
if (ax) {
dx = ax - priv->old_ax;
int xdelta = ax - priv->old_ax;
priv->old_ax = ax;
if (wsWheelEmuFilterMotion(pInfo, dx, 0))
if (wsWheelEmuFilterMotion(pInfo, xdelta, 0))
continue;
/* absolute position event */
@ -593,9 +606,9 @@ wsReadInput(InputInfoPtr pInfo)
xf86PostMotionEvent(pInfo->dev, 1, 0, 1, ax);
}
if (ay) {
dy = ay - priv->old_ay;
int ydelta = ay - priv->old_ay;
priv->old_ay = ay;
if (wsWheelEmuFilterMotion(pInfo, 0, dy))
if (wsWheelEmuFilterMotion(pInfo, 0, ydelta))
continue;
/* absolute position event */
@ -603,6 +616,15 @@ wsReadInput(InputInfoPtr pInfo)
xf86PostMotionEvent(pInfo->dev, 1, 1, 1, ay);
}
}
if (dx || dy) {
if (wsWheelEmuFilterMotion(pInfo, dx, dy))
return;
/* relative motion event */
DBG(3, ErrorF("postMotionEvent dX %d dY %d\n",
dx, dy));
xf86PostMotionEvent(pInfo->dev, 0, 0, 2, dx, dy);
}
return;
}