Aren/haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

* Fixed the mouse movement when speed or acceleration where below default

Browse Source 
values. The implementation needs to sum up fractional movement, not
  truncate to zero. Before this change, the mouse would be pretty much unusable
  at lower speeds/acceleration. Now it is guaranteed to move.
* No need to memset() before ioctl(), the driver does that anyways.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28669 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2008-11-16 22:21:34 +00:00
parent 8d267d142a
commit 6e094221e8
1 changed files with 35 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
src/add-ons/input_server/devices/mouse/MouseInputDevice.cpp
View File

@ -86,8 +86,8 @@
# define TRACE(x...) do {} while (0)
# define MD_CALLED(x...) TRACE(x)
# define MID_CALLED(x...) TRACE(x)
# define LOG_ERR(text...) debug_printf(text)
# define LOG_EVENT(text...) TRACE(x)
# define LOG_ERR(x...) debug_printf(x)
# define LOG_EVENT(x...) TRACE(x)
#endif
@ -128,7 +128,9 @@ private:
int32 deltaX, int32 deltaY) const;
void _ComputeAcceleration(
const mouse_movement& movements,
int32& deltaX, int32& deltaY) const;
int32& deltaX, int32& deltaY,
float& historyDeltaX,
float& historyDeltaY) const;
uint32 _RemapButtons(uint32 buttons) const;
private:
@ -368,11 +370,11 @@ MouseDevice::_ControlThread()
_UpdateSettings();
uint32 lastButtons = 0;
float historyDeltaX = 0.0;
float historyDeltaY = 0.0;
while (fActive) {
mouse_movement movements;
memset(&movements, 0, sizeof(movements));
if (ioctl(fDevice, MS_READ, &movements) != B_OK) {
_ControlThreadCleanup();
// TOAST!
@ -399,12 +401,16 @@ MouseDevice::_ControlThread()
uint32 remappedButtons = _RemapButtons(movements.buttons);
int32 deltaX, deltaY;
_ComputeAcceleration(movements, deltaX, deltaY);
_ComputeAcceleration(movements, deltaX, deltaY, historyDeltaX,
historyDeltaY);
LOG_EVENT("%s: buttons: 0x%lx, x: %ld, y: %ld, clicks:%ld, wheel_x:%ld, wheel_y:%ld\n",
fDeviceRef.name, movements.buttons, movements.xdelta, movements.ydelta,
movements.clicks, movements.wheel_xdelta, movements.wheel_ydelta);
LOG_EVENT("%s: x: %ld, y: %ld\n", fDeviceRef.name, deltaX, deltaY);
LOG_EVENT("%s: buttons: 0x%lx, x: %ld, y: %ld, clicks:%ld, "
"wheel_x:%ld, wheel_y:%ld\n",
fDeviceRef.name, movements.buttons,
movements.xdelta, movements.ydelta, movements.clicks,
movements.wheel_xdelta, movements.wheel_ydelta);
LOG_EVENT("%s: x: %ld, y: %ld (%.4f, %.4f)\n", fDeviceRef.name,
deltaX, deltaY, historyDeltaX, historyDeltaY);
// Send single messages for each event
@ -574,11 +580,14 @@ MouseDevice::_BuildMouseMessage(uint32 what, uint64 when, uint32 buttons,
void
MouseDevice::_ComputeAcceleration(const mouse_movement& movements,
int32& deltaX, int32& deltaY) const
int32& _deltaX, int32& _deltaY, float& historyDeltaX,
float& historyDeltaY) const
{
// basic mouse speed
deltaX = movements.xdelta * fSettings.accel.speed >> 16;
deltaY = movements.ydelta * fSettings.accel.speed >> 16;
float deltaX = (float)movements.xdelta * fSettings.accel.speed / 65536.0
+ historyDeltaX;
float deltaY = (float)movements.ydelta * fSettings.accel.speed / 65536.0
+ historyDeltaY;
// acceleration
double acceleration = 1;
@ -587,16 +596,21 @@ MouseDevice::_ComputeAcceleration(const mouse_movement& movements,
* fSettings.accel.accel_factor / 524288.0;
}
// make sure that we move at least one pixel (if there was a movement)
if (deltaX > 0)
deltaX = (int32)floor(deltaX * acceleration);
else
deltaX = (int32)ceil(deltaX * acceleration);
deltaX *= acceleration;
deltaY *= acceleration;
if (deltaY > 0)
deltaY = (int32)floor(deltaY * acceleration);
if (deltaX >= 0)
_deltaX = (int32)floorf(deltaX);
else
deltaY = (int32)ceil(deltaY * acceleration);
_deltaX = (int32)ceilf(deltaX);
if (deltaY >= 0)
_deltaY = (int32)floorf(deltaY);
else
_deltaY = (int32)ceilf(deltaY);
historyDeltaX = deltaX - _deltaX;
historyDeltaY = deltaY - _deltaY;
}