QML API for xdg-shell

Exposes QWaylandXdgShell and QWaylandXdgSurface as QML types, along with
a new QWaylandXdgSurfaceItem.

All of this mirrors the implementation of wl_shell closely. The biggest
difference is how resize is handled.

There is now some duplication in the window chrome implementation of the
pure-qml compositor. This may be improved by refactoring the existing
API for shell extensions.

Change-Id: I4f2ceff7e0462034cd295a27c3eefea457cc9b96
Reviewed-by: Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>

2 files changed, 107 insertions, 0 deletions

diff --git a/examples/wayland/pure-qml/qml/XdgChrome.qml b/examples/wayland/pure-qml/qml/XdgChrome.qml
new file mode 100644
index 000000000..afe137c68
--- /dev/null
+++ b/examples/wayland/pure-qml/qml/XdgChrome.qml
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtWayland.Compositor 1.0
+
+XdgSurfaceItem {
+    id: rootChrome
+
+    xdgSurface: XdgSurface {
+        id: xdgSurface
+        onActivatedChanged: {
+            if (xdgSurface.activated) {
+                receivedFocusAnimation.start();
+            }
+        }
+    }
+
+    onSurfaceDestroyed: {
+        view.bufferLock = true;
+        destroyAnimation.start();
+    }
+
+    SequentialAnimation {
+        id: receivedFocusAnimation
+        ParallelAnimation {
+            NumberAnimation { target: scaleTransform; property: "yScale"; to: 1.02; duration: 100; easing.type: Easing.OutQuad }
+            NumberAnimation { target: scaleTransform; property: "xScale"; to: 1.02; duration: 100; easing.type: Easing.OutQuad }
+        }
+        ParallelAnimation {
+            NumberAnimation { target: scaleTransform; property: "yScale"; to: 1; duration: 100; easing.type: Easing.InOutQuad }
+            NumberAnimation { target: scaleTransform; property: "xScale"; to: 1; duration: 100; easing.type: Easing.InOutQuad }
+        }
+    }
+
+    SequentialAnimation {
+        id: destroyAnimation
+        ParallelAnimation {
+            NumberAnimation { target: scaleTransform; property: "yScale"; to: 2/height; duration: 150 }
+            NumberAnimation { target: scaleTransform; property: "xScale"; to: 0.4; duration: 150 }
+        }
+        NumberAnimation { target: scaleTransform; property: "xScale"; to: 0; duration: 150 }
+        ScriptAction { script: { rootChrome.destroy(); } }
+    }
+
+    transform: [
+        Scale {
+            id: scaleTransform
+            origin.x: rootChrome.width / 2
+            origin.y: rootChrome.height / 2
+        }
+    ]
+}
diff --git a/examples/wayland/pure-qml/qml/main.qml b/examples/wayland/pure-qml/qml/main.qml
index ac8dde712..65ac36166 100644
--- a/examples/wayland/pure-qml/qml/main.qml
+++ b/examples/wayland/pure-qml/qml/main.qml
@@ -57,6 +57,12 @@ WaylandCompositor {
     }
 
     Component {
+        id: xdgChromeComponent
+        XdgChrome {
+        }
+    }
+
+    Component {
         id: surfaceComponent
         WaylandSurface {
         }
@@ -82,6 +88,17 @@ WaylandCompositor {
                 initialize();
             }
         },
+        XdgShell {
+            id: xdgShell
+
+            onXdgSurfaceCreated: {
+                xdgChromeComponent.createObject(defaultOutput.surfaceArea, { "xdgSurface": xdgSurface } );
+            }
+
+            Component.onCompleted: {
+                initialize();
+            }
+        },
         TextInputManager {
             Component.onCompleted: {
                 initialize();