Add a function to the compositor api to send full touch events

A simple sendTouchPointEvent(id, x, y, ...) type of function will not
be sufficient in the future due to the amount of data in a touch
event; therefore an additional sendFullTouchEvent is introduced. This
function takes a QTouchEvent and posts a series of down, motion, up,
frame events as needed. In the future it may be changed so that it
maps to a protocol extension instead of the standard events.

As an example qwindow-compositor is updated to use this new function.

Change-Id: I39d3df1c6d4868364440f59789d01fc5b7b80dac
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Jørgen Lind <jorgen.lind@nokia.com>

4 files changed, 29 insertions, 0 deletions

diff --git a/src/compositor/compositor_api/waylandsurface.cpp b/src/compositor/compositor_api/waylandsurface.cpp
index 061c1aa95..b0b53a785 100644
--- a/src/compositor/compositor_api/waylandsurface.cpp
+++ b/src/compositor/compositor_api/waylandsurface.cpp
@@ -232,6 +232,12 @@ void WaylandSurface::sendTouchCancelEvent()
     d->surface->sendTouchCancelEvent();
 }
 
+void WaylandSurface::sendFullTouchEvent(QTouchEvent *event)
+{
+    Q_D(WaylandSurface);
+    d->surface->sendFullTouchEvent(event);
+}
+
 void WaylandSurface::frameFinished()
 {
     Q_D(WaylandSurface);
diff --git a/src/compositor/compositor_api/waylandsurface.h b/src/compositor/compositor_api/waylandsurface.h
index a902c8280..091e1b0ac 100644
--- a/src/compositor/compositor_api/waylandsurface.h
+++ b/src/compositor/compositor_api/waylandsurface.h
@@ -52,6 +52,7 @@
 #include <QtGui/qopengl.h>
 #endif
 
+class QTouchEvent;
 class WaylandSurfacePrivate;
 
 #ifdef QT_COMPOSITOR_QUICK
@@ -110,6 +111,8 @@ public:
     void sendTouchFrameEvent();
     void sendTouchCancelEvent();
 
+    void sendFullTouchEvent(QTouchEvent *event);
+
     void sendOnScreenVisibilityChange(bool visible);
 
     void frameFinished();
diff --git a/src/compositor/wayland_wrapper/wlsurface.cpp b/src/compositor/wayland_wrapper/wlsurface.cpp
index 86ae1e973..c63886861 100644
--- a/src/compositor/wayland_wrapper/wlsurface.cpp
+++ b/src/compositor/wayland_wrapper/wlsurface.cpp
@@ -49,6 +49,7 @@
 #include "wlsubsurface.h"
 
 #include <QtCore/QDebug>
+#include <QTouchEvent>
 
 #include <wayland-server.h>
 
@@ -750,6 +751,21 @@ void Surface::sendTouchCancelEvent()
                          WL_INPUT_DEVICE_TOUCH_CANCEL);
 }
 
+void Surface::sendFullTouchEvent(QTouchEvent *event)
+{
+    const QList<QTouchEvent::TouchPoint> points = event->touchPoints();
+    if (points.isEmpty())
+        return;
+    const int pointCount = points.count();
+    for (int i = 0; i < pointCount; ++i) {
+        const QTouchEvent::TouchPoint &tp(points.at(i));
+        // Convert the local pos in the compositor window to surface-relative.
+        QPoint p = (tp.pos() - pos()).toPoint();
+        sendTouchPointEvent(tp.id(), p.x(), p.y(), tp.state());
+    }
+    sendTouchFrameEvent();
+}
+
 void Surface::sendFrameCallback()
 {
     Q_D(Surface);
diff --git a/src/compositor/wayland_wrapper/wlsurface.h b/src/compositor/wayland_wrapper/wlsurface.h
index 88bd15c26..e784c6cf5 100644
--- a/src/compositor/wayland_wrapper/wlsurface.h
+++ b/src/compositor/wayland_wrapper/wlsurface.h
@@ -59,6 +59,8 @@
 #include <QtGui/qopengl.h>
 #endif
 
+class QTouchEvent;
+
 namespace Wayland {
 
 class Compositor;
@@ -105,6 +107,8 @@ public:
     void sendTouchFrameEvent();
     void sendTouchCancelEvent();
 
+    void sendFullTouchEvent(QTouchEvent *event);
+
     void sendFrameCallback();
 
     void frameFinished();