Add redirect feature for manually fine tuning the cursor's movement

Cursornavigation now has a property redirects, that allows defining
exceptions to the navigation behaviour. A redirect allows defining
a starting and an ending angle and a target object.
If the move command's direction falls between the limits, the algorithm
is bypassed and cursor is moved to the target object.

1 files changed, 68 insertions, 0 deletions

diff --git a/plugin/redirect.cpp b/plugin/redirect.cpp
new file mode 100644
index 0000000..3c33571
--- /dev/null
+++ b/plugin/redirect.cpp
@@ -0,0 +1,68 @@
+#include "redirect.h"
+#include <QQuickItem>
+#include <QtMath>
+#include "inputtypes.h"
+
+Redirect::Redirect(QObject *parent)
+:QObject(parent)
+,m_start(-1)
+,m_end(-1)
+,m_target(nullptr)
+{
+}
+
+Redirect::~Redirect()
+{
+}
+
+qreal Redirect::start() const
+{
+    return m_start;
+}
+
+qreal Redirect::end() const
+{
+    return m_end;
+}
+
+QQuickItem *Redirect::target() const
+{
+    return m_target;
+}
+
+void Redirect::setStart(qreal start)
+{
+    m_start = start;
+    m_startR = CursorNavigationCommand::fitAngle(qDegreesToRadians(start));
+}
+
+void Redirect::setEnd(qreal end)
+{
+    m_end = end;
+    m_endR = CursorNavigationCommand::fitAngle(qDegreesToRadians(end));
+}
+
+void Redirect::setTarget(QQuickItem *target)
+{
+    if (m_target) {
+        disconnect(m_target, &QObject::destroyed, this, &Redirect::onTargetDestroyed);
+    }
+    m_target = target;
+    if (m_target) {
+        connect(m_target, &QObject::destroyed, this, &Redirect::onTargetDestroyed);
+    }
+}
+
+bool Redirect::angleIsIncluded(qreal angle)
+{
+    if (m_startR > m_endR)
+        return angle >= m_startR || angle <= m_endR;
+    else
+        return angle >= m_startR && angle <= m_endR;
+}
+
+void Redirect::onTargetDestroyed()
+{
+    m_target = nullptr;
+}
+