QtPdf multipage example: add macOS icon; support QFileOpenEvent

The icon uses some parts from
https://openclipart.org/detail/171857/icon-pdf-a%C2%8Dcone

Pick-to: 6.4
Task-number: QTBUG-106460
Change-Id: I94ecc81d83f96fdced3dce630b94b9037d3e90f9
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

7 files changed, 88 insertions, 6 deletions

diff --git a/examples/pdf/multipage/CMakeLists.txt b/examples/pdf/multipage/CMakeLists.txt
index 96effd384..25cc726ed 100644
--- a/examples/pdf/multipage/CMakeLists.txt
+++ b/examples/pdf/multipage/CMakeLists.txt
@@ -16,8 +16,19 @@ find_package(Qt6 REQUIRED COMPONENTS Gui Qml)
 
 qt_add_executable(multipage
     main.cpp
+    pdfapplication.h
+    pdfapplication.cpp
 )
 
+if (APPLE AND NOT IOS)
+    set(MACOSX_BUNDLE_ICON_FILE multipage.icns)
+    set(app_icon_macos "${CMAKE_CURRENT_SOURCE_DIR}/resources/multipage.icns")
+    set_source_files_properties(${app_icon_macos} PROPERTIES
+           MACOSX_PACKAGE_LOCATION "Resources")
+    target_sources(multipage PRIVATE ${app_icon_macos})
+    set(MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/resources/macos/Info.plist")
+endif()
+
 set_target_properties(multipage PROPERTIES
     WIN32_EXECUTABLE TRUE
     MACOSX_BUNDLE TRUE
diff --git a/examples/pdf/multipage/main.cpp b/examples/pdf/multipage/main.cpp
index f5b246ac4..9f9272d69 100644
--- a/examples/pdf/multipage/main.cpp
+++ b/examples/pdf/multipage/main.cpp
@@ -1,7 +1,7 @@
 // Copyright (C) 2020 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
-#include <QGuiApplication>
+#include "pdfapplication.h"
 #include <QQmlApplicationEngine>
 
 int main(int argc, char* argv[])
@@ -9,17 +9,17 @@ int main(int argc, char* argv[])
     QCoreApplication::setApplicationName("Qt Quick Multi-page PDF Viewer Example");
     QCoreApplication::setOrganizationName("QtProject");
     QCoreApplication::setApplicationVersion(QT_VERSION_STR);
-    QGuiApplication app(argc, argv);
+    PdfApplication app(argc, argv);
 
     QQmlApplicationEngine engine;
     engine.load(QUrl(QStringLiteral("qrc:///pdfviewer/viewer.qml")));
+    app.setFileOpener(engine.rootObjects().constFirst());
     if (app.arguments().count() > 1) {
         QUrl toLoad = QUrl::fromUserInput(app.arguments().at(1));
-        engine.rootObjects().first()->setProperty("source", toLoad);
+        engine.rootObjects().constFirst()->setProperty("source", toLoad);
     } else {
-        engine.rootObjects().first()->setProperty("source", QStringLiteral("resources/test.pdf"));
+        engine.rootObjects().constFirst()->setProperty("source", QStringLiteral("resources/test.pdf"));
     }
 
-
     return app.exec();
 }
diff --git a/examples/pdf/multipage/multipage.pro b/examples/pdf/multipage/multipage.pro
index bd08ba0de..c12651335 100644
--- a/examples/pdf/multipage/multipage.pro
+++ b/examples/pdf/multipage/multipage.pro
@@ -2,7 +2,7 @@ TEMPLATE = app
 
 QT += qml quick pdf svg
 
-SOURCES += main.cpp
+SOURCES += main.cpp pdfapplication.cpp
 
 RESOURCES += \
     viewer.qrc
@@ -12,3 +12,5 @@ EXAMPLE_FILES = \
 target.path = $$[QT_INSTALL_EXAMPLES]/pdf/multipage
 INSTALLS += target
 
+macos:QMAKE_INFO_PLIST = resources/macos/Info.plist
+macos:ICON = resources/multipage.icns
diff --git a/examples/pdf/multipage/pdfapplication.cpp b/examples/pdf/multipage/pdfapplication.cpp
new file mode 100644
index 000000000..d8e7c6486
--- /dev/null
+++ b/examples/pdf/multipage/pdfapplication.cpp
@@ -0,0 +1,16 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "pdfapplication.h"
+#include <QFileOpenEvent>
+
+PdfApplication::PdfApplication(int &argc, char **argv)
+    : QGuiApplication(argc, argv) { }
+
+bool PdfApplication::event(QEvent *e) {
+    if (e->type() == QEvent::FileOpen) {
+        QFileOpenEvent *foEvent = static_cast<QFileOpenEvent *>(e);
+        m_fileOpener->setProperty("source", foEvent->url());
+    }
+    return QGuiApplication::event(e);
+}
diff --git a/examples/pdf/multipage/pdfapplication.h b/examples/pdf/multipage/pdfapplication.h
new file mode 100644
index 000000000..06c998e1c
--- /dev/null
+++ b/examples/pdf/multipage/pdfapplication.h
@@ -0,0 +1,24 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef PDFAPPLICATION_H
+#define PDFAPPLICATION_H
+
+#include <QGuiApplication>
+#include <QObject>
+
+class PdfApplication : public QGuiApplication
+{
+public:
+    PdfApplication(int &argc, char **argv);
+    void setFileOpener(QObject *opener) {
+        m_fileOpener = opener;
+    }
+
+protected:
+    bool event(QEvent *e) override;
+
+    QObject *m_fileOpener;
+};
+
+#endif // PDFAPPLICATION_H
diff --git a/examples/pdf/multipage/resources/macos/Info.plist b/examples/pdf/multipage/resources/macos/Info.plist
new file mode 100644
index 000000000..512becda0
--- /dev/null
+++ b/examples/pdf/multipage/resources/macos/Info.plist
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist SYSTEM "file://localhost/System/Library/DTDs/PropertyList.dtd">
+<plist version="0.1">
+<dict>
+    <key>CFBundleIconFile</key>
+      <string>multipage</string>
+    <key>CFBundleIdentifier</key>
+      <string>org.qt-project.multipage</string>
+    <key>CFBundleDisplayName</key>
+      <string>Multi-page PDF Viewer</string>
+    <key>CFBundlePackageType</key>
+      <string>APPL</string>
+    <key>CFBundleExecutable</key>
+      <string>multipage</string>
+    <key>CFBundleDocumentTypes</key>
+      <array>
+        <dict>
+        <key>CFBundleTypeRole</key>
+          <string>Viewer</string>
+          <key>CFBundleTypeName</key>
+            <string>pdf</string>
+          <key>LSItemContentTypes</key>
+            <array>
+                <string>com.adobe.pdf</string>
+            </array>
+        </dict>
+      </array>
+</dict>
+</plist>
diff --git a/examples/pdf/multipage/resources/multipage.icns b/examples/pdf/multipage/resources/multipage.icns
new file mode 100644
index 000000000..2e3756903
--- /dev/null
+++ b/examples/pdf/multipage/resources/multipage.icns