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94 lines
3.2 KiB
94 lines
3.2 KiB
10 years ago
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From 2c8d0999bc4b83a0f8326f5c2706dd3bd00a6e7f Mon Sep 17 00:00:00 2001
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From: Peter Hutterer <peter.hutterer@who-t.net>
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Date: Thu, 15 Jan 2015 13:14:43 +1000
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Subject: [PATCH weston] libinput-device: use the discrete axis value for wheel
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events
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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libinput < 0.8 sent wheel click events with value 10. Since 0.8
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the value is the angle of the click in degrees but it now provides
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the click count as separate value. To keep backwards-compat with
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existing clients, we just send multiples of the click count.
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Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
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Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
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---
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src/libinput-device.c | 44 ++++++++++++++++++++++++++++++++++++++++----
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1 file changed, 40 insertions(+), 4 deletions(-)
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diff --git a/src/libinput-device.c b/src/libinput-device.c
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index 6bb7a75..0cd215a 100644
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--- a/src/libinput-device.c
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+++ b/src/libinput-device.c
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@@ -126,6 +126,44 @@ handle_pointer_button(struct libinput_device *libinput_device,
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libinput_event_pointer_get_button_state(pointer_event));
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}
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+static double
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+normalize_scroll(struct libinput_event_pointer *pointer_event,
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+ enum libinput_pointer_axis axis)
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+{
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+ static int warned;
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+ enum libinput_pointer_axis_source source;
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+ double value;
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+
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+ source = libinput_event_pointer_get_axis_source(pointer_event);
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+ /* libinput < 0.8 sent wheel click events with value 10. Since 0.8
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+ the value is the angle of the click in degrees. To keep
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+ backwards-compat with existing clients, we just send multiples of
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+ the click count.
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+ */
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+ switch (source) {
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+ case LIBINPUT_POINTER_AXIS_SOURCE_WHEEL:
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+ value = 10 * libinput_event_pointer_get_axis_value_discrete(
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+ pointer_event,
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+ axis);
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+ break;
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+ case LIBINPUT_POINTER_AXIS_SOURCE_FINGER:
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+ case LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS:
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+ value = libinput_event_pointer_get_axis_value(pointer_event,
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+ axis);
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+ break;
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+ default:
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+ value = 0;
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+ if (warned < 5) {
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+ weston_log("Unknown scroll source %d. Event discarded\n",
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+ source);
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+ warned++;
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+ }
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+ break;
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+ }
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+
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+ return value;
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+}
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+
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static void
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handle_pointer_axis(struct libinput_device *libinput_device,
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struct libinput_event_pointer *pointer_event)
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@@ -137,8 +175,7 @@ handle_pointer_axis(struct libinput_device *libinput_device,
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axis = LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL;
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if (libinput_event_pointer_has_axis(pointer_event, axis)) {
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- value = libinput_event_pointer_get_axis_value(pointer_event,
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- axis);
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+ value = normalize_scroll(pointer_event, axis);
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notify_axis(device->seat,
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libinput_event_pointer_get_time(pointer_event),
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WL_POINTER_AXIS_VERTICAL_SCROLL,
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@@ -147,8 +184,7 @@ handle_pointer_axis(struct libinput_device *libinput_device,
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axis = LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL;
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if (libinput_event_pointer_has_axis(pointer_event, axis)) {
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- value = libinput_event_pointer_get_axis_value(pointer_event,
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- axis);
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+ value = normalize_scroll(pointer_event, axis);
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notify_axis(device->seat,
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libinput_event_pointer_get_time(pointer_event),
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WL_POINTER_AXIS_HORIZONTAL_SCROLL,
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--
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2.1.0
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