sketch: Add tooltip functionality to Button

krita/sketch/qml/components/Button.qml

@@ -45,6 +45,8 @@ Item {
 
     property bool hasFocus: false;
 
+    property string tooltip: "";
+
     width: Constants.GridWidth;
     height: Constants.GridHeight;
 
@@ -124,6 +126,7 @@ Item {
     MouseArea {
         id: mouse;
         anchors.fill: parent;
+        hoverEnabled: true;
         onClicked: {
             if (base.enabled) {
                 base.clicked();
@@ -132,6 +135,37 @@ Item {
                 }
             }
         }
+        onPressAndHold: {
+            if(base.tooltip !== "") {
+                tooltip.show(base.width / 2, 0);
+            }
+        }
+        onReleased: {
+            tooltip.hide();
+        }
+        onEntered: {
+            hoverDelayTimer.start();
+        }
+        onPositionChanged: {
+            if(hoverDelayTimer.running) {
+                hoverDelayTimer.restart();
+            }
+        }
+        onExited: {
+            hoverDelayTimer.stop();
+            tooltip.hide();
+        }
+    }
+
+    Timer {
+        id: hoverDelayTimer;
+        interval: 1000;
+        onTriggered: tooltip.show(base.width / 2, 0);
+    }
+
+    Tooltip {
+        id: tooltip;
+        text: base.tooltip;
     }
 
     states: State {

krita/sketch/qml/components/Tooltip.qml

+/* This file is part of the KDE project
+ * Copyright (C) 2014 Arjen Hiemstra <ahiemstra@heimr.nl>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU 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 1.1
+import org.krita.sketch 1.0
+
+Item {
+    id: base;
+    property alias text: label.text;
+
+    Rectangle {
+        id: body;
+
+        width: label.width + Constants.DefaultMargin * 2;
+        height: label.height + Constants.DefaultMargin * 2;
+        radius: Constants.DefaultMargin;
+
+        opacity: 0;
+        Behavior on opacity { NumberAnimation { duration: 100 } }
+
+        Label {
+            id: label;
+            x: Constants.DefaultMargin;
+            y: Constants.DefaultMargin;
+        }
+
+        Shadow {
+            anchors.top: parent.bottom;
+            anchors.horizontalCenter: parent.horizontalCenter;
+            width: label.width;
+        }
+    }
+
+    function show(x, y) {
+        body.opacity = 1;
+        body.x = x - (body.width / 2);
+        body.y = y - body.height;
+    }
+
+    function hide() {
+        hideTimer.start();
+    }
+
+    Timer {
+        id: hideTimer;
+        interval: 1000;
+        onTriggered: body.opacity = 0;
+    }
+}