QWebView handling

[jwintz]

Hello,

When using QWebView through deployment (using QtIosCmake), I had to manually add:

• Q_IMPORT_PLUGIN(QWebViewModule)
• Q_INIT_RESOURCE(qmake_QtWebView)

This has been found as follows:

λ nm ./qml/QtWebView/libdeclarative_webview.a | c++filt | grep -i static
---------------- T qt_static_plugin_QWebViewModule()
...

λ nm ./qml/QtWebView/libdeclarative_webview.a | c++filt | grep -i init
...
---------------- T qInitResources_qmake_QtWebView()
...

libdeclarative_webview.a is correctly scanned, but these corresponding macros are missing from either qt_generate_qml_plugin_import or qt_generate_plugin_import.

Adding these macros results in successful device and simulator build and deployment.

With a little guidance I'll be glad provide a merge request.

Finally, big ups for this very very impressive, helpful and functional set of cmake macros.

[OlivierLDff]

So qt_generate_plugin_import rely on what is inside the lib/cmake folder of Qt root.

QtStaticCMake/QtStaticCMake.cmake

Lines 354 to 357 in 5b4bb89

	file(GLOB QT_STATIC_AVAILABLES_QT_DIRECTORIES
	LIST_DIRECTORIES true
	RELATIVE ${QT_STATIC_QT_ROOT}/lib/cmake
	${QT_STATIC_QT_ROOT}/lib/cmake/Qt5*)

Then in each of those folder there are files for plugins, Qt5<Module>_<Plugin>Plugin.
For example Module can be Gui, and Plugin can be QGif.

The function extract <Plugin> from file name to write it into the Q_IMPORT_PLUGIN.
I'm checking on windows, so what is see might not apply for ios, but in lib/cmake/Qt5WebView i only have one file: Qt5WebView_QWebEngineWebViewPlugin.cmake.

Can you check you have a file Qt5WebView_QWebViewModulePlugin.cmake on mac. If not, or if file is formatted differently, we need to add specific code for the WebView.

I would say something is required around here:

QtStaticCMake/QtStaticCMake.cmake

Lines 365 to 371 in 5b4bb89

	file(APPEND ${QT_STATIC_PLUGIN_SRC_FILE} "\n// ${DIR}\n")
	# Parse Plugin to append to the list only if unique
	foreach(PLUGIN ${DIR_PLUGIN_CONTENT})
	# List form is Qt5::NameOfPlugin, we just need NameOfPlugin
	string(REGEX MATCH ".*\\:\\:(.*)" PLUGIN_MATCH ${PLUGIN})
	set(PLUGIN_NAME ${CMAKE_MATCH_1})
	# Should be NameOfPlugin

And for Q_INIT_RESOURCE(qmake_QtWebView), i don't know how to do something cleany. I think this should go in the readme. From the name, you can tell that qmake in generating some extra code for it.

I would maybe generate something like that :

class cmake_QtWebViewForceImport
{
    cmake_QtWebViewForceImport()
    {
        Q_INIT_RESOURCE(qmake_QtWebView)
    }
    static cmake_QtWebViewForceImportsingleton;
};

cmake_QtWebViewForceImport cmake_QtWebViewForceImport::singleton;