Expose QPA API under qpa/*

The main reasons for doing this are:
1. _qpa.h end up in the master QtGui include file. QtGui is meant for
userland applications. qpa code is neither binary nor source compatible.
Inadvertant use of QPA api makes the user code binary-incompatible.
2. syncqt creates forwarding headers for non-private header files. This
gives people the impression that this is public API.

As discussed on the mailing list, even though QPA api is internal and subject
to change, it needs to  treated differently from private headers since they
will be used by  in-qtbase and out-of-qtbase plugins.

This commit does the following:
1. The _qpa in QPA header files is dropped.
2. syncqt now treats any file with qplatform prefix as a special file and
moves it to qpa/ directory. The recommended way of using QPA API in plugins
is: #include <qpa/qplatformfoo.h>. This allows the user include QPA API
from multiple modules (for example, qplatformfoo might be in QtPrintSupport)
3. The user needs to explicitly add QT += <module>-private to get access to
the qpa api.
4. Creates compat headers for the olden style qplatformfoo_qpa.h and QPlatformFoo
includes.

This commit does not change the cpp filenames. This requires a more careful
merging of existing non qpa cpp files and existing cpp files on a case by
case basis. This can be done at anytime.

The following files are not renamed as part of this changed but will be fixed
as part of a future change:
src/gui/kernel/qgenericpluginfactory_qpa.h
src/gui/kernel/qgenericplugin_qpa.h
src/gui/kernel/qwindowsysteminterface_qpa.h

files were renamed using

    for x in `find . -name "qplatform*_qpa.h"`; do git mv $x "${x/_qpa.h/.h}"; done
    for x in `find . -name "qplatform*_qpa_p.h"`; do git mv $x "${x/_qpa_p.h/_p.h}"; done

includes were renamed using script

for file in `find . -name "*.h" -or -name "*.cpp" -or -name "*.mm"`; do
    sed -i -e 's,.*#.*include.*<\(Qt.*/\)\?\(QPlatform.*\)>,#include <qpa/\L\2.h>,g' \
        -e 's,.*#.*include.*"\(Qt.*/\)\?\(QPlatform.*\)",#include <qpa/\L\2.h>,g' \
        -e 's,.*#.*include.* "\(qplatform.*\)_qpa.h",#include <qpa/\L\1.h>,g' \
        -e 's,.*#.*include.*"\(qplatform.*\)_qpa_p.h",#include <qpa/\L\1_p.h>,g' \
        -e 's,.*#.*include.*<\(Qt.*/\|Qt.*/private/\|private/\)\?\(qplatform.*\)_qpa\(.*\)>,#include <qpa/\2\3>,g' \
        -e 's,.*#.*include.*"\(Qt.*/\|Qt.*/private/\|private/\)\?\(qplatform.*\)_qpa\(.*\)",#include <qpa/\2\3>,g' \
        $file
done

Change-Id: I04a350314a45746e3911f54b3b21ad03315afb67
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

7 files changed, 8 insertions, 8 deletions

diff --git a/src/plugins/platforms/eglfs/main.cpp b/src/plugins/platforms/eglfs/main.cpp
index 2ca2199619..4565b79610 100644
--- a/src/plugins/platforms/eglfs/main.cpp
+++ b/src/plugins/platforms/eglfs/main.cpp
@@ -39,7 +39,7 @@
 **
 ****************************************************************************/
 
-#include <QtGui/QPlatformIntegrationPlugin>
+#include <qpa/qplatformintegrationplugin.h>
 #include "qeglfsintegration.h"
 
 QT_BEGIN_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfsbackingstore.h b/src/plugins/platforms/eglfs/qeglfsbackingstore.h
index f723bca685..e9808b7f95 100644
--- a/src/plugins/platforms/eglfs/qeglfsbackingstore.h
+++ b/src/plugins/platforms/eglfs/qeglfsbackingstore.h
@@ -42,7 +42,7 @@
 #ifndef QEGLFSBACKINGSTORE_H
 #define QEGLFSBACKINGSTORE_H
 
-#include <QtGui/qplatformbackingstore_qpa.h>
+#include <qpa/qplatformbackingstore.h>
 
 #include <QImage>
 #include <QRegion>
diff --git a/src/plugins/platforms/eglfs/qeglfshooks.h b/src/plugins/platforms/eglfs/qeglfshooks.h
index a56c80261b..c6ea209a6f 100644
--- a/src/plugins/platforms/eglfs/qeglfshooks.h
+++ b/src/plugins/platforms/eglfs/qeglfshooks.h
@@ -42,7 +42,7 @@
 #ifndef QEGLFSHOOKS_H
 #define QEGLFSHOOKS_H
 
-#include "qplatformintegration_qpa.h"
+#include <qpa/qplatformintegration.h>
 #include <EGL/egl.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/plugins/platforms/eglfs/qeglfsintegration.cpp b/src/plugins/platforms/eglfs/qeglfsintegration.cpp
index 9b7d9246f9..7025aed4a8 100644
--- a/src/plugins/platforms/eglfs/qeglfsintegration.cpp
+++ b/src/plugins/platforms/eglfs/qeglfsintegration.cpp
@@ -48,7 +48,7 @@
 #include <QtPlatformSupport/private/qgenericunixfontdatabase_p.h>
 #include <QtPlatformSupport/private/qgenericunixeventdispatcher_p.h>
 
-#include <QtGui/QPlatformWindow>
+#include <qpa/qplatformwindow.h>
 #include <QtGui/QSurfaceFormat>
 #include <QtGui/QOpenGLContext>
 #include <QtGui/QScreen>
diff --git a/src/plugins/platforms/eglfs/qeglfsintegration.h b/src/plugins/platforms/eglfs/qeglfsintegration.h
index eea36a489d..b7cb715a9c 100644
--- a/src/plugins/platforms/eglfs/qeglfsintegration.h
+++ b/src/plugins/platforms/eglfs/qeglfsintegration.h
@@ -44,8 +44,8 @@
 
 #include "qeglfsscreen.h"
 
-#include <QtGui/QPlatformIntegration>
-#include <QtGui/QPlatformScreen>
+#include <qpa/qplatformintegration.h>
+#include <qpa/qplatformscreen.h>
 
 QT_BEGIN_HEADER
 
diff --git a/src/plugins/platforms/eglfs/qeglfsscreen.h b/src/plugins/platforms/eglfs/qeglfsscreen.h
index 66e600d7c2..8c67bf1956 100644
--- a/src/plugins/platforms/eglfs/qeglfsscreen.h
+++ b/src/plugins/platforms/eglfs/qeglfsscreen.h
@@ -42,7 +42,7 @@
 #ifndef QEGLFSSCREEN_H
 #define QEGLFSSCREEN_H
 
-#include <QPlatformScreen>
+#include <qpa/qplatformscreen.h>
 
 #include <QtCore/QTextStream>
 
diff --git a/src/plugins/platforms/eglfs/qeglfswindow.h b/src/plugins/platforms/eglfs/qeglfswindow.h
index 7f40c78550..3e7a68953a 100644
--- a/src/plugins/platforms/eglfs/qeglfswindow.h
+++ b/src/plugins/platforms/eglfs/qeglfswindow.h
@@ -45,7 +45,7 @@
 #include "qeglfsintegration.h"
 #include "qeglfsscreen.h"
 
-#include <QPlatformWindow>
+#include <qpa/qplatformwindow.h>
 #include <QtWidgets/QWidget>
 
 QT_BEGIN_NAMESPACE