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Diffstat (limited to 'man/XIQueryDevice.txt')
| -rw-r--r-- | man/XIQueryDevice.txt | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/man/XIQueryDevice.txt b/man/XIQueryDevice.txt index 6b5a622..e5e8251 100644 --- a/man/XIQueryDevice.txt +++ b/man/XIQueryDevice.txt @@ -100,7 +100,8 @@ DESCRIPTION The type field specifies the type of the input class. Currently, the following types are defined: - XIKeyClass, XIButtonClass, XIValuatorClass, XIScrollClass + XIKeyClass, XIButtonClass, XIValuatorClass, XIScrollClass, + XITouchClass In the future, additional types may be added. Clients are required to ignore unknown input classes. @@ -231,6 +232,33 @@ DESCRIPTION the emulation of XI_Motion events when the driver submits legacy scroll button events. + typedef struct + { + int type; + int sourceid; + int mode; + int num_touches; + } XITouchClassInfo; + + A device may have zero or one XITouchClassInfo, denoting + multi-touch capability on the device. A device with a XITouchClassInfo + may send TouchBegin, TouchUpdate, TouchEnd and TouchOwnership events. + + The mode field is either XIDirectTouch for direct-input touch devices + such as touchscreens or XIDependentTouch for indirect input devices such + as touchpads. For XIDirectTouch devices, touch events are sent to window + at the position the touch occured. For XIDependentTouch devices, touch + events are sent to the window at the position of the device's sprite. + + The num_touches field defines the maximum number of simultaneous touches + the device supports. A num_touches of 0 means the maximum number of + simultaneous touches is undefined or unspecified. This field should be + used as a guide only, devices will lie about their capabilities. + + A device with an XITouchClassInfo may still send pointer events. The + valuators must be defined with the respective XIValuatorClass + classes. A valuator may send both pointer and touch-events. + XIQueryDevice can generate a BadDevice error. XIFreeDeviceInfo frees the information returned by |