andreacavalli/xserver-multidpi
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Input: Convert clipAxis, moveAbsolute and moveRelative to double

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Change all these three to use doubles internally, though the outputs of
moveAbsolute and moveRelative are still truncated to int.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
This commit is contained in:
Daniel Stone 2011-03-02 13:29:24 +00:00 committed by Peter Hutterer
parent 4e52cc0ef4
commit 3463078f96
1 changed files with 25 additions and 23 deletions
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48
dix/getevents.c
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@ -617,7 +617,7 @@ GetMaximumEventsNum(void) {
* InitValuatorAxisClassStruct.
*/
static void
clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
clipAxis(DeviceIntPtr pDev, int axisNum, double *val)
{
AxisInfoPtr axis;
@ -647,9 +647,9 @@ clipValuators(DeviceIntPtr pDev, ValuatorMask *mask)
for (i = 0; i < valuator_mask_size(mask); i++)
if (valuator_mask_isset(mask, i))
{
int val = valuator_mask_get(mask, i);
double val = valuator_mask_get_double(mask, i);
clipAxis(pDev, i, &val);
valuator_mask_set(mask, i, val);
valuator_mask_set_double(mask, i, val);
}
}
@ -699,17 +699,18 @@ static void
moveAbsolute(DeviceIntPtr dev, int *x_out, int *y_out, ValuatorMask *mask)
{
int i;
int x, y;
for (i = 0; i < valuator_mask_size(mask); i++)
{
if (valuator_mask_isset(mask, i))
{
int val = valuator_mask_get(mask, i);
clipAxis(dev, i, &val);
dev->last.valuators[i] = val;
valuator_mask_set(mask, i, val);
}
double val;
if (!valuator_mask_isset(mask, i))
continue;
val = valuator_mask_get_double(mask, i);
clipAxis(dev, i, &val);
dev->last.valuators[i] = trunc(val);
dev->last.remainder[i] = val - trunc(val);
valuator_mask_set_double(mask, i, val);
}
*x_out = dev->last.valuators[0];
@ -733,18 +734,19 @@ moveRelative(DeviceIntPtr dev, int *x_out, int *y_out, ValuatorMask *mask)
/* calc other axes, clip, drop back into valuators */
for (i = 0; i < valuator_mask_size(mask); i++)
{
if (valuator_mask_isset(mask, i))
{
int val = dev->last.valuators[i];
val += valuator_mask_get(mask, i);
/* x & y need to go over the limits to cross screens if the SD
* isn't currently attached; otherwise, clip to screen bounds. */
if (valuator_get_mode(dev, i) == Absolute &&
((i != 0 && i != 1) || clip_xy))
clipAxis(dev, i, &val);
dev->last.valuators[i] = val;
valuator_mask_set(mask, i, val);
}
double val = dev->last.valuators[i] + dev->last.remainder[i];
if (!valuator_mask_isset(mask, i))
continue;
val += valuator_mask_get_double(mask, i);
/* x & y need to go over the limits to cross screens if the SD
* isn't currently attached; otherwise, clip to screen bounds. */
if (valuator_get_mode(dev, i) == Absolute &&
((i != 0 && i != 1) || clip_xy))
clipAxis(dev, i, &val);
dev->last.valuators[i] = trunc(val);
dev->last.remainder[i] = val - trunc(val);
valuator_mask_set_double(mask, i, val);
}
*x_out = dev->last.valuators[0];