Hi,
On 06/03/2014 07:34 AM, Peter Hutterer wrote:
> ---
> src/libinput-private.h | 9 ++++++
> src/libinput.c | 35 ++++++++++++++++++++++++
> src/libinput.h | 74
> ++++++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 118 insertions(+)
>
Looks good to me.
Regards,
Hans
> diff --git a/src/libinput-private.h b/src/libinput-private.h
> index 020167e..d3570a4 100644
> --- a/src/libinput-private.h
> +++ b/src/libinput-private.h
> @@ -77,8 +77,17 @@ struct libinput_device_config_tap {
> void (*reset)(struct libinput_device *device);
> };
>
> +struct libinput_device_config_scroll {
> + int (*methods)(struct libinput_device *device);
> + enum libinput_config_status (*set)(struct libinput_device *device,
> + enum libinput_scroll_method method);
> + enum libinput_scroll_method (*get)(struct libinput_device *device);
> + void (*reset)(struct libinput_device *device);
> +};
> +
> struct libinput_device_config {
> struct libinput_device_config_tap *tap;
> + struct libinput_device_config_scroll *scroll;
> };
>
> struct libinput_device {
> diff --git a/src/libinput.c b/src/libinput.c
> index 6a713bb..b2388e6 100644
> --- a/src/libinput.c
> +++ b/src/libinput.c
> @@ -1215,3 +1215,38 @@ libinput_device_config_tap_reset(struct
> libinput_device *device)
> if (device->config.tap)
> device->config.tap->reset(device);
> }
> +
> +LIBINPUT_EXPORT unsigned int
> +libinput_device_config_scroll_get_methods(struct libinput_device *device)
> +{
> + return device->config.scroll ?
> + device->config.scroll->methods(device) :
> + LIBINPUT_SCROLL_METHOD_NONE;
> +}
> +
> +LIBINPUT_EXPORT enum libinput_config_status
> +libinput_device_config_scroll_set_method(struct libinput_device *device,
> + enum libinput_scroll_method method)
> +{
> + if ((method & libinput_device_config_scroll_get_methods(device)) == 0)
> + return LIBINPUT_CONFIG_STATUS_UNSUPPORTED;
> +
> + return device->config.scroll->set(device, method);
> +}
> +
> +LIBINPUT_EXPORT enum libinput_scroll_method
> +libinput_device_config_scroll_get_method(struct libinput_device *device)
> +{
> + if (libinput_device_config_scroll_get_methods(device) ==
> + LIBINPUT_SCROLL_METHOD_NONE)
> + return LIBINPUT_SCROLL_METHOD_NONE;
> +
> + return device->config.scroll->get(device);
> +}
> +
> +LIBINPUT_EXPORT void
> +libinput_device_config_scroll_reset(struct libinput_device *device)
> +{
> + if (device->config.scroll)
> + device->config.scroll->reset(device);
> +}
> diff --git a/src/libinput.h b/src/libinput.h
> index 0c84547..571f7ba 100644
> --- a/src/libinput.h
> +++ b/src/libinput.h
> @@ -1434,6 +1434,80 @@ libinput_device_config_tap_is_enabled(struct
> libinput_device *device);
> void
> libinput_device_config_tap_reset(struct libinput_device *device);
>
> +/**
> + * @ingroup config
> + *
> + * Devices without a physical scroll wheel (such as touchpads) may emulate
> + * scroll events in software through one or more methods.
> + */
> +enum libinput_scroll_method {
> + /**
> + * No scroll method available or selected.
> + */
> + LIBINPUT_SCROLL_METHOD_NONE = 0,
> + /**
> + * Scrolling is triggered by moving a finger at the edge of the
> + * touchpad.
> + */
> + LIBINPUT_SCROLL_METHOD_EDGE = (1 << 0),
> + /**
> + * Scrolling is triggered by moving two fingers simultaneously.
> + */
> + LIBINPUT_SCROLL_METHOD_TWOFINGER = (1 << 1),
> +};
> +
> +/**
> + * @ingroup config
> + *
> + * Check the available scroll methods on this device.
> + *
> + * @param device The device to configure
> + *
> + * @return A bitmask of the available scroll methods
> + */
> +unsigned int
> +libinput_device_config_scroll_get_methods(struct libinput_device *device);
> +
> +/**
> + * @ingroup config
> + *
> + * Set the scroll method on this device. Only one method at a time may be
> + * chosen for each device.
> + *
> + * @param device The device to configure
> + * @param method The scroll method to chose
> + *
> + * @return A config status code
> + */
> +enum libinput_config_status
> +libinput_device_config_scroll_set_method(struct libinput_device *device,
> + enum libinput_scroll_method method);
> +
> +/**
> + * @ingroup config
> + *
> + * Get the currently selected scroll method on this device. If a device does
> + * not support configurable scroll methods, the return value is always
> + * LIBINPUT_SCROLL_METHOD_NONE.
> + *
> + * @param device The device to configure
> + *
> + * @return The currently selected scroll method
> + */
> +enum libinput_scroll_method
> +libinput_device_config_scroll_get_method(struct libinput_device *device);
> +
> +/**
> + * @ingroup config
> + *
> + * Reset to the default scroll method for this device, if any. If the device
> + * does not support configurable scroll methods this function does nothing.
> + *
> + * @param device The device to configure
> + */
> +void
> +libinput_device_config_scroll_reset(struct libinput_device *device);
> +
> #ifdef __cplusplus
> }
> #endif
>
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