QQuickButton: Add canceled signal

We now support the following pattern:

 1. Press the mouse button => emit pressed
 2. Move the mouse cursor outside the button => pressed = false
 3. Release the mouse button => emit canceled

Note that getting the mouse grabbed away by another item, at any
stage, will also emit the canceled signal.

Change-Id: I97e485327370ea47943dfef75553000cee449a01
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/controls/qquickbutton_p.h b/src/controls/qquickbutton_p.h
index 1622be76..903af206 100644
--- a/src/controls/qquickbutton_p.h
+++ b/src/controls/qquickbutton_p.h
@@ -76,6 +76,7 @@ public:
 Q_SIGNALS:
     void pressed();
     void released();
+    void canceled();
     void clicked();
     void textChanged();
     void pressedChanged();