iOS: Fix build with -no-opengl

Change-Id: I014fa1772f629ef4224ac98bfc30eb5a86f38fde
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit ae92c571a36703f6ab95d98b55d070cc57023376)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/plugins/platforms/ios/CMakeLists.txt

@@ -15,7 +15,6 @@ qt_internal_add_plugin(QIOSIntegrationPlugin
         plugin.mm
         qiosapplicationdelegate.h qiosapplicationdelegate.mm
         qiosapplicationstate.h qiosapplicationstate.mm
-        qioscontext.h qioscontext.mm
         qioseventdispatcher.h qioseventdispatcher.mm
         qiosglobal.h qiosglobal.mm
         qiosinputcontext.h qiosinputcontext.mm
@@ -51,6 +50,8 @@ qt_disable_apple_app_extension_api_only(QIOSIntegrationPlugin)
 qt_internal_find_apple_system_framework(FWUniformTypeIdentifiers UniformTypeIdentifiers)
 
 qt_internal_extend_target(QIOSIntegrationPlugin CONDITION QT_FEATURE_opengl
+    SOURCES
+        qioscontext.h qioscontext.mm
     LIBRARIES
         Qt::OpenGLPrivate
 )

src/plugins/platforms/ios/qiosintegration.h

@@ -33,7 +33,10 @@ public:
     QPlatformWindow *createPlatformWindow(QWindow *window) const override;
     QPlatformBackingStore *createPlatformBackingStore(QWindow *window) const override;
 
+#if QT_CONFIG(opengl)
     QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const override;
+#endif
+
     QPlatformOffscreenSurface *createPlatformOffscreenSurface(QOffscreenSurface *surface) const override;
 
     QPlatformFontDatabase *fontDatabase() const override;

src/plugins/platforms/ios/qiosintegration.mm

@@ -7,7 +7,6 @@
 #include "qioswindow.h"
 #include "qiosscreen.h"
 #include "qiosplatformaccessibility.h"
-#include "qioscontext.h"
 #ifndef Q_OS_TVOS
 #include "qiosclipboard.h"
 #endif
@@ -29,6 +28,10 @@
 #include <QDir>
 #include <QOperatingSystemVersion>
 
+#if QT_CONFIG(opengl)
+#include "qioscontext.h"
+#endif
+
 #import <AudioToolbox/AudioServices.h>
 
 #include <QtDebug>
@@ -128,11 +131,15 @@ QIOSIntegration::~QIOSIntegration()
 bool QIOSIntegration::hasCapability(Capability cap) const
 {
     switch (cap) {
+#if QT_CONFIG(opengl)
     case BufferQueueingOpenGL:
         return true;
     case OpenGL:
     case ThreadedOpenGL:
         return true;
+    case RasterGLSurface:
+        return true;
+#endif
     case ThreadedPixmaps:
         return true;
     case MultipleWindows:
@@ -141,8 +148,6 @@ bool QIOSIntegration::hasCapability(Capability cap) const
         return false;
     case ApplicationState:
         return true;
-    case RasterGLSurface:
-        return true;
     default:
         return QPlatformIntegration::hasCapability(cap);
     }
@@ -158,11 +163,13 @@ QPlatformBackingStore *QIOSIntegration::createPlatformBackingStore(QWindow *wind
     return new QRhiBackingStore(window);
 }
 
+#if QT_CONFIG(opengl)
 // Used when the QWindow's surface type is set by the client to QSurface::OpenGLSurface
 QPlatformOpenGLContext *QIOSIntegration::createPlatformOpenGLContext(QOpenGLContext *context) const
 {
     return new QIOSContext(context);
 }
+#endif
 
 class QIOSOffscreenSurface : public QPlatformOffscreenSurface
 {

src/plugins/platforms/ios/qioswindow.h

@@ -56,7 +56,9 @@ public:
 
     void requestUpdate() override;
 
+#if QT_CONFIG(opengl)
     CAEAGLLayer *eaglLayer() const;
+#endif
 
 private:
     void applicationStateChanged(Qt::ApplicationState state);

src/plugins/platforms/ios/qioswindow.mm

@@ -4,7 +4,6 @@
 #include "qioswindow.h"
 
 #include "qiosapplicationdelegate.h"
-#include "qioscontext.h"
 #include "qiosglobal.h"
 #include "qiosintegration.h"
 #include "qiosscreen.h"
@@ -15,7 +14,10 @@
 #include <QtGui/private/qwindow_p.h>
 #include <qpa/qplatformintegration.h>
 
+#if QT_CONFIG(opengl)
 #import <QuartzCore/CAEAGLLayer.h>
+#endif
+
 #ifdef Q_OS_IOS
 #import <QuartzCore/CAMetalLayer.h>
 #endif
@@ -352,11 +354,13 @@ void QIOSWindow::requestUpdate()
     static_cast<QIOSScreen *>(screen())->setUpdatesPaused(false);
 }
 
+#if QT_CONFIG(opengl)
 CAEAGLLayer *QIOSWindow::eaglLayer() const
 {
     Q_ASSERT([m_view.layer isKindOfClass:[CAEAGLLayer class]]);
     return static_cast<CAEAGLLayer *>(m_view.layer);
 }
+#endif
 
 #ifndef QT_NO_DEBUG_STREAM
 QDebug operator<<(QDebug debug, const QIOSWindow *window)

src/plugins/platforms/ios/quiview.mm

@@ -82,7 +82,10 @@ inline ulong getTimeStamp(UIEvent *event)
 
 + (Class)layerClass
 {
+#if QT_CONFIG(opengl)
     return [CAEAGLLayer class];
+#endif
+    return [super layerClass];
 }
 
 - (instancetype)initWithQIOSWindow:(QT_PREPEND_NAMESPACE(QIOSWindow) *)window
@@ -113,6 +116,7 @@ inline ulong getTimeStamp(UIEvent *event)
 - (instancetype)initWithFrame:(CGRect)frame
 {
     if ((self = [super initWithFrame:frame])) {
+#if QT_CONFIG(opengl)
         if ([self.layer isKindOfClass:[CAEAGLLayer class]]) {
             // Set up EAGL layer
             CAEAGLLayer *eaglLayer = static_cast<CAEAGLLayer *>(self.layer);
@@ -122,6 +126,7 @@ inline ulong getTimeStamp(UIEvent *event)
                 kEAGLDrawablePropertyColorFormat: kEAGLColorFormatRGBA8
             };
         }
+#endif
 
         if (isQtApplication())
             self.hidden = YES;