Cocoa: Fix icon size calculation for system tray.

The Overall goal is to make it possible to use correctly-
sized pixmaps in a predictable way, while still doing
something reasonable with small and large pixmaps.
(The recommended pixmap height is up to 18 points.)

Enable use of rectangular icons by selecting pixmaps
based on pixmap height.

Draw a low-resolution pixmap on retina displays if
there is no high-resolution pixmap available. Scale
large pixmaps to fit the available menu bar area.

Add a manual-test with various pixmap sizes

Task-number: QTBUG-33441
Change-Id: I1926181fe27cae526bae58022df3240bae9f8ac8
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>

10 files changed, 106 insertions, 0 deletions

diff --git a/tests/manual/cocoa/qsystemtrayicon/icons.qrc b/tests/manual/cocoa/qsystemtrayicon/icons.qrc
new file mode 100644
index 0000000000..2486dcab34
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/icons.qrc
@@ -0,0 +1,11 @@
+<RCC>
+     <qresource prefix="/">
+         <file>macsystray18x18.png</file>
+         <file>macsystray36x36.png</file>
+         <file>macsystray25x15.png</file>
+         <file>macsystray50x30.png</file>
+         <file>macsystray16x16.png</file>
+         <file>macsystray32x32.png</file>
+         <file>macsystray64x64.png</file>
+    </qresource>
+</RCC>
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray16x16.png b/tests/manual/cocoa/qsystemtrayicon/macsystray16x16.png
new file mode 100644
index 0000000000..e6930f16c6
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray16x16.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray18x18.png b/tests/manual/cocoa/qsystemtrayicon/macsystray18x18.png
new file mode 100644
index 0000000000..4316516d85
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray18x18.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray25x15.png b/tests/manual/cocoa/qsystemtrayicon/macsystray25x15.png
new file mode 100644
index 0000000000..c1a98b898c
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray25x15.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray32x32.png b/tests/manual/cocoa/qsystemtrayicon/macsystray32x32.png
new file mode 100644
index 0000000000..35f0f28ae7
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray32x32.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray36x36.png b/tests/manual/cocoa/qsystemtrayicon/macsystray36x36.png
new file mode 100644
index 0000000000..d2c6df066c
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray36x36.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray50x30.png b/tests/manual/cocoa/qsystemtrayicon/macsystray50x30.png
new file mode 100644
index 0000000000..afea90b7fe
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray50x30.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/macsystray64x64.png b/tests/manual/cocoa/qsystemtrayicon/macsystray64x64.png
new file mode 100644
index 0000000000..b2a126d78f
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/macsystray64x64.png
diff --git a/tests/manual/cocoa/qsystemtrayicon/main.cpp b/tests/manual/cocoa/qsystemtrayicon/main.cpp
new file mode 100644
index 0000000000..9b3fc2bd13
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/main.cpp
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QtWidgets>
+
+int main(int argc, char**argv)
+{
+    QApplication app(argc, argv);
+
+    QWidget window;
+    window.show();
+
+    QSystemTrayIcon systrayIcon(&window);
+
+
+    enum Iconset { Square,          // square icons, reccomended size (18 device-independent pixels or less)
+                   Rectangular,     // rectangular icons, good size
+                   PowerOfTwo,      // standard pow-2 icons, not optimized for the OS X menu bar
+                   Small,           // Not enough pixels
+                   UnreasonablyLarge  // please do something reasonable with my unreasonably large pixmap
+                   };
+
+    // Select icon set and load images
+    Iconset iconset = Square;
+    QIcon icon;
+    switch (iconset) {
+        case Square:
+            icon.addFile(":/macsystray36x36.png");
+            icon.addFile(":/macsystray18x18.png");
+        break;
+        case Rectangular:
+            icon.addFile(":/macsystray50x30.png");
+            icon.addFile(":/macsystray25x15.png");
+        break;
+        case PowerOfTwo:
+            icon.addFile(":/macsystray16x16.png");
+            icon.addFile(":/macsystray32x32.png");
+            icon.addFile(":/macsystray64x64.png");
+        break;
+        case Small:
+            icon.addFile(":/macsystray16x16.png");
+        case UnreasonablyLarge:
+            icon.addFile(":/macsystray64x64.png");
+        break;
+    }
+
+    systrayIcon.setIcon(icon);
+    systrayIcon.show();
+
+    return app.exec();
+}
diff --git a/tests/manual/cocoa/qsystemtrayicon/qsystemtrayicon.pro b/tests/manual/cocoa/qsystemtrayicon/qsystemtrayicon.pro
new file mode 100644
index 0000000000..459ebafa38
--- /dev/null
+++ b/tests/manual/cocoa/qsystemtrayicon/qsystemtrayicon.pro
@@ -0,0 +1,7 @@
+TEMPLATE = app
+TARGET = qsystemtrayicon
+INCLUDEPATH += .
+QT += widgets
+
+SOURCES += main.cpp
+RESOURCES += icons.qrc