import mobilecomponents

This commit adds the .qml and qmldir files for the MobileComponents
import. It contains low-level things like units and theme, and mid-level
things like Heading, and high-level navigation in the form of an
ApplicationWindow and Drawers that hold menues and provide swipe
interactions between the pages.

These components are a more full version of the "light" plasma
components we have been using to make the UI scale well and appear more
consistent (coloring, spacing, alignment, etc.).

An interesting change is that Units and Theme are now singleton types,
which is more efficient. It does mean a few changes to our current API
usage:
- units becomes Units
- theme becomes Theme
- 2 properties move out of each (we can't subclass singleton types)

This change also means that we're using the vanilla upstream components,
so it's very easy to get improvements to these rather young components
in, and we don't have to do this work on our own.

The mobilecomponents consist of just a bunch of qml files which we can
deploy through the qrc file.

In the next commits, we will gradually make the current UI use these new
elements.

Signed-off-by: Sebastian Kügler <sebas@kde.org>

qt-mobile/qml/mobilecomponents/private/AbstractDrawer.qml

@@ -0,0 +1,47 @@
+/*
+ *   Copyright 2015 Marco Martin <mart@kde.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as
+ *   published by the Free Software Foundation; either version 2, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Library General Public License for more details
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+import QtQuick 2.1
+import QtGraphicalEffects 1.0
+import org.kde.plasma.mobilecomponents 0.2
+
+//TODO: This will become a QQC2 Drawer
+//providing just a dummy api for now
+Item {
+    id: root
+    anchors.fill: parent
+    z: 9999
+
+    default property alias page: mainPage.data
+    property Item contentItem
+    property bool opened
+    property int edge: Qt.LeftEdge
+    property real position: 0
+
+    function open () { }
+    function close () { }
+    signal clicked
+
+    Item {
+        id: mainPage
+        anchors.fill: parent
+        onChildrenChanged: mainPage.children[0].anchors.fill = mainPage
+    }
+}
+

qt-mobile/qml/mobilecomponents/private/ActionButton.qml

@@ -0,0 +1,142 @@
+/*
+ *   Copyright 2015 Marco Martin <mart@kde.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as
+ *   published by the Free Software Foundation; either version 2, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Library General Public License for more details
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+import QtQuick 2.1
+import QtQuick.Layouts 1.2
+import QtGraphicalEffects 1.0
+import org.kde.plasma.mobilecomponents 0.2
+
+MouseArea {
+    id: button
+    property alias iconSource: icon.source
+    Layout.minimumWidth: Units.iconSizes.large
+    Layout.maximumWidth: Layout.minimumWidth
+    implicitWidth: Units.iconSizes.large
+    implicitHeight: width
+    drag {
+        target: button
+        axis: Drag.XAxis
+        minimumX: contextDrawer ? 0 : parent.width/2 - width/2
+        maximumX: globalDrawer ? parent.width : parent.width/2 - width/2
+    }
+
+    transform: Translate {}
+    onReleased: {
+        if (globalDrawer && x > Math.min(parent.width/4*3, parent.width/2 + globalDrawer.contentItem.width/2)) {
+            globalDrawer.open();
+            contextDrawer.close();
+        } else if (contextDrawer && x < Math.max(parent.width/4, parent.width/2 - contextDrawer.contentItem.width/2)) {
+            if (contextDrawer) {
+                contextDrawer.open();
+            }
+            if (globalDrawer) {
+                globalDrawer.close();
+            }
+        } else {
+            if (globalDrawer) {
+                globalDrawer.close();
+            }
+            if (contextDrawer) {
+                contextDrawer.close();
+            }
+        }
+    }
+    Connections {
+        target: globalDrawer
+        onPositionChanged: {
+            if (!button.pressed) {
+                button.x = globalDrawer.contentItem.width * globalDrawer.position + button.parent.width/2 - button.width/2;
+            }
+        }
+    }
+    Connections {
+        target: contextDrawer
+        onPositionChanged: {
+            if (!button.pressed) {
+                button.x = button.parent.width/2 - button.width/2 - contextDrawer.contentItem.width * contextDrawer.position;
+            }
+        }
+    }
+    onXChanged: {
+        if (button.pressed) {
+            globalDrawer.position = Math.min(1, Math.max(0, (x - button.parent.width/2 + button.width/2)/globalDrawer.contentItem.width));
+            contextDrawer.position = Math.min(1, Math.max(0, (button.parent.width/2 - button.width/2 - x)/contextDrawer.contentItem.width));
+        }
+    }
+
+    Item {
+        id: background
+        anchors {
+            fill: parent
+            leftMargin: -Units.gridUnit
+            rightMargin: -Units.gridUnit
+        }
+        Rectangle {
+            radius: width/2
+            anchors.centerIn: parent
+            height: parent.height - Units.smallSpacing*2
+            width: height
+            color: button.pressed ? Theme.highlightColor : Theme.backgroundColor
+            Icon {
+                id: icon
+                anchors {
+                    fill: parent
+                    margins: Units.smallSpacing
+                }
+            }
+            ActionButtonArrow {
+                anchors {
+                    right: parent.left
+                    rightMargin: Units.smallSpacing
+                }
+                visible: contextDrawer && contextDrawer.enabled
+                inverted: true
+            }
+            ActionButtonArrow {
+                anchors {
+                    left: parent.right
+                    leftMargin: Units.smallSpacing
+                }
+                visible: globalDrawer && globalDrawer.enabled
+            }
+            Behavior on color {
+                ColorAnimation {
+                    duration: Units.longDuration
+                    easing.type: Easing.InOutQuad
+                }
+            }
+            Behavior on x {
+                NumberAnimation {
+                    duration: Units.longDuration
+                    easing.type: Easing.InOutQuad
+                }
+            }
+        }
+    }
+    DropShadow {
+        anchors.fill: background
+        horizontalOffset: 0
+        verticalOffset: Units.smallSpacing/2
+        radius: Units.gridUnit / 2.4
+        samples: 16
+        color: button.pressed ? "transparent" : Qt.rgba(0, 0, 0, 0.5)
+        source: background
+    }
+}
+

qt-mobile/qml/mobilecomponents/private/ActionButtonArrow.qml

@@ -0,0 +1,56 @@
+/*
+ *   Copyright 2015 Marco Martin <mart@kde.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as
+ *   published by the Free Software Foundation; either version 2, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU Library General Public License for more details
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+import QtQuick 2.1
+import QtQuick.Layouts 1.2
+import QtGraphicalEffects 1.0
+import org.kde.plasma.mobilecomponents 0.2
+
+Canvas {
+    id: canvas
+    width: Units.gridUnit
+    height: width
+    property bool inverted
+    property color color: parent.color
+    anchors.verticalCenter: parent.verticalCenter
+
+    onColorChanged: requestPaint()
+
+    onPaint: {
+        var ctx = canvas.getContext("2d");
+        ctx.fillStyle = canvas.color;
+        ctx.beginPath();
+        if (inverted) {
+            ctx.moveTo(canvas.width, 0);
+            ctx.bezierCurveTo(canvas.width-canvas.width/8, 0,
+                              canvas.width-canvas.width/8, canvas.height,
+                              canvas.width, canvas.height);
+            ctx.lineTo(0, canvas.height/2);
+        } else {
+            ctx.moveTo(0, 0);
+            ctx.bezierCurveTo(canvas.width/8, 0,
+                              canvas.width/8, canvas.height,
+                              0, canvas.height);
+            ctx.lineTo(canvas.width, canvas.height/2);
+            //ctx.lineTo(0, canvas.height);
+        }
+        ctx.fill();
+    }
+}
+

qt-mobile/qml/mobilecomponents/private/PageStack.js

@@ -0,0 +1,243 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Components project.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Page stack. Items are page containers.
+var pageStack = [];
+
+// Page component cache map. Key is page url, value is page component.
+var componentCache = {};
+
+// Returns the page stack depth.
+function getDepth() {
+    return pageStack.length;
+}
+
+// Pushes a page on the stack.
+function push(page, properties, replace, immediate) {
+    // page order sanity check
+    if ((!replace && page == currentPage)
+        || (replace && pageStack.length > 1
+        && page == pageStack[pageStack.length - 2].page)) {
+        throw new Error("Cannot navigate so that the resulting page stack has two consecutive entries of the same page instance.");
+    }
+
+    // figure out if more than one page is being pushed
+    var pages;
+    if (page instanceof Array) {
+        pages = page;
+        page = pages.pop();
+        if (page.createObject === undefined && page.parent === undefined && typeof page != "string") {
+            properties = properties || page.properties;
+            page = page.page;
+        }
+    }
+
+    // get the current container
+    var oldContainer;
+    if (pageStack.length) {
+        oldContainer = pageStack[pageStack.length - 1];
+    }
+
+    // pop the old container off the stack if this is a replace
+    if (oldContainer && replace) {
+        pageStack.pop();
+    }
+
+    // push any extra defined pages onto the stack
+    if (pages) {
+        var i;
+        for (i = 0; i < pages.length; i++) {
+            var tPage = pages[i];
+            var tProps;
+            if (tPage.createObject === undefined && tPage.parent === undefined && typeof tPage != "string") {
+                tProps = tPage.properties;
+                tPage = tPage.page;
+            }
+            pageStack.push(initPage(tPage, tProps));
+        }
+    }
+
+    // initialize the page
+    var container = initPage(page, properties);
+
+    // push the page container onto the stack
+    pageStack.push(container);
+
+    depth = pageStack.length;
+    currentPage = container.page;
+
+    // perform page transition
+    //FIXME: this should be in for PageStack, out for PageRow?
+    //immediate = immediate || !oldContainer;
+    var orientationChange = false;
+    if (oldContainer) {
+        orientationChange = orientationChanges(oldContainer.page, container.page);
+        oldContainer.pushExit(replace, immediate, orientationChange);
+    }
+
+    // sync tool bar
+    var tools = container.page.tools || null;
+    if (toolBar) {
+        toolBar.setTools(tools, immediate ? "set" : replace ? "replace" : "push");
+    }
+
+    container.pushEnter(immediate, orientationChange);
+    return container.page;
+}
+
+// Initializes a page and its container.
+function initPage(page, properties) {
+    var container = containerComponent.createObject(root);
+
+    var pageComp;
+    if (page.createObject) {
+        // page defined as component
+        pageComp = page;
+    } else if (typeof page == "string") {
+        // page defined as string (a url)
+        pageComp = componentCache[page];
+        if (!pageComp) {
+            pageComp = componentCache[page] = Qt.createComponent(page);
+        }
+    }
+    if (pageComp) {
+        if (pageComp.status == Component.Error) {
+            throw new Error("Error while loading page: " + pageComp.errorString());
+        } else {
+            // instantiate page from component
+            page = pageComp.createObject(container.pageParent, properties || {});
+        }
+    } else {
+        // copy properties to the page
+        for (var prop in properties) {
+            if (properties.hasOwnProperty(prop)) {
+                page[prop] = properties[prop];
+            }
+        }
+    }
+
+    container.page = page;
+    if (page.parent == null || page.parent == container.pageParent) {
+        container.owner = container;
+    } else {
+        container.owner = page.parent;
+    }
+
+    // the page has to be reparented if
+    if (page.parent != container.pageParent) {
+        page.parent = container.pageParent;
+    }
+
+    if (page.pageStack !== undefined) {
+        page.pageStack = root;
+    }
+
+    page.anchors.fill = container.pageParent
+
+    return container;
+}
+
+// Pops a page off the stack.
+function pop(page, immediate) {
+    // make sure there are enough pages in the stack to pop
+    if (pageStack.length > 1) {
+        //unwind to itself means no pop
+        if (page !== undefined && page == pageStack[pageStack.length - 1].page) {
+            return
+        }
+        // pop the current container off the stack and get the next container
+        var oldContainer = pageStack.pop();
+        var container = pageStack[pageStack.length - 1];
+        if (page !== undefined) {
+            // an unwind target has been specified - pop until we find it
+            while (page != container.page && pageStack.length > 1) {
+                pageStack.pop();
+                container.popExit(immediate, false);
+                container = pageStack[pageStack.length - 1];
+            }
+        }
+
+        depth = pageStack.length;
+        currentPage = container.page;
+
+        // perform page transition
+        var orientationChange = orientationChanges(oldContainer.page, container.page);
+        oldContainer.popExit(immediate, orientationChange);
+        container.popEnter(immediate, orientationChange);
+
+        // sync tool bar
+        var tools = container.page.tools || null;
+        if (toolBar) {
+            toolBar.setTools(tools, immediate ? "set" : "pop");
+        }
+        return oldContainer.page;
+    } else {
+        return null;
+    }
+}
+
+// Checks if the orientation changes between oldPage and newPage
+function orientationChanges(oldPage, newPage) {
+    return newPage.orientationLock != 0 //PlasmaComponents.PageOrientation.Automatic
+           && newPage.orientationLock != 3//PlasmaComponents.PageOrientation.LockPrevious
+           && newPage.orientationLock != oldPage.orientationLock
+}
+
+// Clears the page stack.
+function clear() {
+    var container;
+    while (container = pageStack.pop()) {
+        container.cleanup();
+    }
+    depth = 0;
+    currentPage = null;
+}
+
+// Iterates through all pages in the stack (top to bottom) to find a page.
+function find(func) {
+    for (var i = pageStack.length - 1; i >= 0; i--) {
+        var page = pageStack[i].page;
+        if (func(page)) {
+            return page;
+        }
+    }
+    return null;
+}
+

qt-mobile/qml/mobilecomponents/private/qmldir

@@ -0,0 +1,3 @@
+module org.kde.plasma.mobilecomponents.private
+#plugin mobilecomponentsprivateplugin
+