Make QWindowSystemInterface part of QPA API

As discussed on mailing list and QtCS 2012.

Any file starting with qwindowsystem is now marked as
QPA API.

This change drops _qpa from the filenames and adds gui-private
where required for the code to compile. This change is backward
compatible otherwise and compat headers are created for
the old inclusion headers.

Change-Id: I72ea0f394dee74f46e614fcf11ab5500ac9fef2a
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

bin/syncqt

@@ -88,6 +88,7 @@ normalizePath(\$qtbasedir) if (defined $qtbasedir);
 
 # will be defined based on the modules sync.profile
 our (%modules, %moduleheaders, @allmoduleheadersprivate, %classnames, %modulepris, %explicitheaders, %deprecatedheaders);
+our @qpa_headers = ();
 
 # global variables (modified by options)
 my $isunix = 0;
@@ -584,6 +585,15 @@ sub locateSyncProfile
     }
 }
 
+sub isQpaHeader
+{
+    my ($header) = @_;
+    foreach my $qpa_header (@qpa_headers) {
+        return 1 if ($header =~ $qpa_header);
+    }
+    return 0;
+}
+
 # check if this is an in-source build, and if so use that as the basedir too
 $basedir = locateSyncProfile($out_basedir);
 if ($basedir) {
@@ -910,7 +920,7 @@ foreach my $lib (@modules_to_sync) {
                         #figure out if it is a public header
                         my $public_header = $header;
                         my $qpa_header = 0;
-                        if($public_header =~ /^qplatform/) {
+                        if(isQpaHeader($public_header)) {
                             $public_header = 0;
                             $qpa_header = 1;
                         } elsif($allheadersprivate || $public_header =~ /_p.h$/ || $public_header =~ /_pch.h$/) {
@@ -1200,7 +1210,7 @@ if($check_includes) {
                         my $public_header = $header;
                         if($public_header =~ /_p.h$/ || $public_header =~ /_pch.h$/) {
                             $public_header = 0;
-                        } elsif ($public_header =~ /^qplatform/) {
+                        } elsif (isQpaHeader($public_header)) {
                             $public_header = 0;
                         } else {
                             foreach (@ignore_for_master_contents) {

src/gui/kernel/kernel.pri

@@ -8,8 +8,8 @@ KERNEL_P= kernel
 HEADERS += \
         kernel/qgenericpluginfactory_qpa.h \
         kernel/qgenericplugin_qpa.h \
-        kernel/qwindowsysteminterface_qpa.h \
-        kernel/qwindowsysteminterface_qpa_p.h \
+        kernel/qwindowsysteminterface.h \
+        kernel/qwindowsysteminterface_p.h \
         kernel/qplatformintegration.h \
         kernel/qplatformdrag.h \
         kernel/qplatformscreen.h \

src/gui/kernel/qguiapplication_p.h

@@ -49,8 +49,8 @@
 
 #include <QtCore/private/qthread_p.h>
 
-#include <QWindowSystemInterface>
-#include "private/qwindowsysteminterface_qpa_p.h"
+#include <qpa/qwindowsysteminterface.h>
+#include <qpa/qwindowsysteminterface_p.h>
 #include "private/qshortcutmap_p.h"
 #include <qicon.h>
 

src/gui/kernel/qwindowsysteminterface.h

@@ -41,6 +41,15 @@
 #ifndef QWINDOWSYSTEMINTERFACE_H
 #define QWINDOWSYSTEMINTERFACE_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is part of the QPA API and is not meant to be used
+// in applications. Usage of this API may make your code
+// source and binary incompatible with future versions of Qt.
+//
+
 #include <QtCore/QTime>
 #include <QtGui/qwindowdefs.h>
 #include <QtCore/QEvent>

src/gui/kernel/qwindowsysteminterface_p.h

@@ -38,10 +38,10 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-#ifndef QWINDOWSYSTEMINTERFACE_QPA_P_H
-#define QWINDOWSYSTEMINTERFACE_QPA_P_H
+#ifndef QWINDOWSYSTEMINTERFACE_P_H
+#define QWINDOWSYSTEMINTERFACE_P_H
 
-#include "qwindowsysteminterface_qpa.h"
+#include "qwindowsysteminterface.h"
 
 #include <QElapsedTimer>
 #include <QPointer>
@@ -338,4 +338,4 @@ public:
 QT_END_HEADER
 QT_END_NAMESPACE
 
-#endif // QWINDOWSYSTEMINTERFACE_QPA_P_H
+#endif // QWINDOWSYSTEMINTERFACE_P_H

src/gui/kernel/qwindowsysteminterface_qpa.cpp

@@ -38,9 +38,9 @@
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/
-#include "qwindowsysteminterface_qpa.h"
+#include "qwindowsysteminterface.h"
 #include <qpa/qplatformwindow.h>
-#include "qwindowsysteminterface_qpa_p.h"
+#include "qwindowsysteminterface_p.h"
 #include "private/qguiapplication_p.h"
 #include "private/qevent_p.h"
 #include "private/qtouchdevice_p.h"

src/testlib/qtestkeyboard.h

@@ -56,7 +56,7 @@
 #include <QtGui/qguiapplication.h>
 #include <QtGui/qwindow.h>
 #include <QtGui/qevent.h>
-#include <QtGui/qwindowsysteminterface_qpa.h>
+#include <qpa/qwindowsysteminterface.h>
 
 #ifdef QT_WIDGETS_LIB
 #include <QtWidgets/qwidget.h>

src/testlib/qtestmouse.h

@@ -54,7 +54,7 @@
 #include <QtCore/qpoint.h>
 #include <QtCore/qstring.h>
 #include <QtGui/qevent.h>
-#include <QtGui/qwindowsysteminterface_qpa.h>
+#include <qpa/qwindowsysteminterface.h>
 
 #ifdef QT_WIDGETS_LIB
 #include <QtWidgets/qapplication.h>

src/testlib/qtesttouch.h

@@ -51,7 +51,7 @@
 #include <QtTest/qtestassert.h>
 #include <QtTest/qtestsystem.h>
 #include <QtTest/qtestspontaneevent.h>
-#include <QtGui/QWindowSystemInterface>
+#include <qpa/qwindowsysteminterface.h>
 #include <QtCore/qmap.h>
 #include <QtGui/qevent.h>
 #ifdef QT_WIDGETS_LIB

sync.profile

@@ -87,7 +87,10 @@
         "qplatformthemeplugin_qpa.h" => "qpa/qplatformthemeplugin.h",
         "QPlatformThemePlugin" => "qpa/qplatformthemeplugin.h",
         "qplatformwindow_qpa.h" => "qpa/qplatformwindow.h",
-        "QPlatformWindow" => "qpa/qplatformwindow.h"
+        "QPlatformWindow" => "qpa/qplatformwindow.h",
+        "qwindowsysteminterface_qpa.h" => "qpa/qwindowsysteminterface.h",
+        "QWindowSystemInterface" => "qpa/qwindowsysteminterface.h",
+        "qwindowsysteminterface_qpa_p.h" => "qpa/qwindowsysteminterface_p.h"
     },
     "QtWidgets" => {
         "qplatformmenu_qpa.h" => "qpa/qplatformmenu.h",
@@ -120,6 +123,7 @@
     }
 );
 
+@qpa_headers = ( qr/^qplatform/, qr/^qwindowsystem/ );
 @ignore_for_include_check = ( "qsystemdetection.h", "qcompilerdetection.h", "qprocessordetection.h" );
 @ignore_for_qt_begin_header_check = ( "qiconset.h", "qconfig.h", "qconfig-dist.h", "qconfig-large.h", "qconfig-medium.h", "qconfig-minimal.h", "qconfig-small.h", "qfeatures.h", "qt_windows.h" );
 @ignore_for_qt_begin_namespace_check = ( "qconfig.h", "qconfig-dist.h", "qconfig-large.h", "qconfig-medium.h", "qconfig-minimal.h", "qconfig-small.h", "qfeatures.h", "qatomic_arch.h", "qatomic_windowsce.h", "qt_windows.h", "qatomic_macosx.h" );