doc: Add snippets and animations illustrating TapHandler.GesturePolicy

People are constantly confused by GesturePolicy and its default value,
so we really need a "glanceable" reference in the docs to show the
differences between use cases.

Also clarify the pitfalls with the default DragThreshold value.

We switch from the \value tag to a 2-column \table because the \image
would otherwise break the table, and also because it saves space and
acts as a meaningful reminder to have the animation right under the
enum value that is being documented.

Pick-to: 6.5 6.4 6.2
Task-number: QTBUG-70397
Task-number: QTBUG-73262
Task-number: QTBUG-100534
Task-number: QTBUG-107239
Task-number: QTBUG-111310
Change-Id: I1ff45f58a8a8edf55f4a8696d881aa9e0bedcfe3
Reviewed-by: Oliver Eftevaag <oliver.eftevaag@qt.io>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/quick/doc/snippets/pointerHandlers/tapHandlerButtonReleaseWithinBounds.qml b/src/quick/doc/snippets/pointerHandlers/tapHandlerButtonReleaseWithinBounds.qml
new file mode 100644
index 0000000000..3e8634a605
--- /dev/null
+++ b/src/quick/doc/snippets/pointerHandlers/tapHandlerButtonReleaseWithinBounds.qml
@@ -0,0 +1,51 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+//![0]
+import QtQuick
+
+Item {
+    width: 120; height: 80
+
+    component Button : Rectangle {
+        id: button
+        signal clicked
+        property alias text: buttonLabel.text
+
+        width: 80
+        height: 40
+        radius: 3
+        property color dark: Qt.darker(palette.button, 1.3)
+        gradient: Gradient {
+            GradientStop { position: 0.0; color: tapHandler.pressed ? dark : palette.button }
+            GradientStop { position: 1.0; color: dark }
+        }
+
+        SequentialAnimation on border.width {
+            id: tapFlash
+            running: false
+            loops: 3
+            PropertyAction { value: 2 }
+            PauseAnimation { duration: 100 }
+            PropertyAction { value: 0 }
+            PauseAnimation { duration: 100 }
+        }
+
+        //![1]
+        TapHandler {
+            id: tapHandler
+            gesturePolicy: TapHandler.ReleaseWithinBounds
+            onTapped: tapFlash.start()
+        }
+        //![1]
+
+        Text {
+            id: buttonLabel
+            text: "Click Me"
+            color: palette.buttonText
+            anchors.centerIn: parent
+        }
+    }
+
+    Button { x: 10; y: 10 }
+}
+//![0]