Say hello to the Fusion style

[ChangeLog][Controls] Introduced a Fusion style that offers
a platform agnostic desktop-oriented look'n'feel.

Change-Id: Id1c1baf10f4b3a79e89bcc72f6d170ed0b2cc8b0
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 137 insertions, 0 deletions

diff --git a/src/imports/controls/fusion/DelayButton.qml b/src/imports/controls/fusion/DelayButton.qml
new file mode 100644
index 00000000..db9257e8
--- /dev/null
+++ b/src/imports/controls/fusion/DelayButton.qml
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.9
+import QtQuick.Templates 2.3 as T
+import QtQuick.Controls 2.3
+import QtQuick.Controls.impl 2.3
+import QtQuick.Controls.Fusion 2.3
+import QtQuick.Controls.Fusion.impl 2.3
+
+T.DelayButton {
+    id: control
+
+    implicitWidth: Math.max(background ? background.implicitWidth : 0,
+                            contentItem.implicitWidth + leftPadding + rightPadding)
+    implicitHeight: Math.max(background ? background.implicitHeight : 0,
+                             contentItem.implicitHeight + topPadding + bottomPadding)
+    baselineOffset: contentItem.y + contentItem.baselineOffset
+
+    padding: 6
+
+    transition: Transition {
+        NumberAnimation {
+            duration: control.delay * (control.pressed ? 1.0 - control.progress : 0.3 * control.progress)
+        }
+    }
+
+    contentItem: Item {
+        implicitWidth: label.implicitWidth
+        implicitHeight: label.implicitHeight
+
+        Item {
+            x: -control.leftPadding + (control.mirrored ? 0 : control.progress * control.width)
+            width: control.width
+            height: parent.height
+
+            clip: control.progress > 0
+            visible: control.mirrored ? control.progress > 0 : control.progress < 1
+
+            Text {
+                id: label
+                x: -parent.x
+                width: control.availableWidth
+                height: parent.height
+
+                text: control.text
+                font: control.font
+                color: control.mirrored ? control.palette.brightText : control.palette.buttonText
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+                elide: Text.ElideRight
+            }
+        }
+
+        Item {
+            x: -control.leftPadding
+            width: (control.mirrored ? 1.0 - control.progress : control.progress) * control.width
+            height: parent.height
+
+            clip: control.progress > 0
+            visible: control.mirrored ? control.progress < 1 : control.progress > 0
+
+            Text {
+                x: -parent.x
+                width: control.availableWidth
+                height: parent.height
+
+                text: control.text
+                font: control.font
+                color: control.mirrored ? control.palette.buttonText : control.palette.brightText
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+                elide: Text.ElideRight
+            }
+        }
+    }
+
+    background: ButtonPanel {
+        implicitWidth: 80
+        implicitHeight: 24
+
+        control: control
+        highlighted: false
+        scale: control.mirrored ? -1 : 1
+
+        Rectangle {
+            width: control.progress * parent.width
+            height: parent.height
+
+            radius: 2
+            border.color: Qt.darker(Fusion.highlight(control.palette), 1.4)
+            gradient: Gradient {
+                GradientStop {
+                    position: 0
+                    color: Qt.lighter(Fusion.highlight(control.palette), 1.2)
+                }
+                GradientStop {
+                    position: 1
+                    color: Fusion.highlight(control.palette)
+                }
+            }
+        }
+    }
+}