first WIP version of mac skia SalGraphics backend

It doesn't yet blit to screen, but the basics should be there.

Change-Id: I0f77b66756f578d84d0cee16cda00e7a2fea714f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120805
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

3 files changed, 107 insertions, 3 deletions

diff --git a/vcl/inc/quartz/salgdi.h b/vcl/inc/quartz/salgdi.h
index afddffb6a9f9..ab7a25ee9b7c 100644
--- a/vcl/inc/quartz/salgdi.h
+++ b/vcl/inc/quartz/salgdi.h
@@ -267,11 +267,31 @@ struct AquaSharedAttributes
     }
 };
 
-class AquaGraphicsBackend final : public SalGraphicsImpl
+class AquaGraphicsBackendBase
 {
 private:
+    SalGraphicsImpl* mpImpl = nullptr;
+protected:
     AquaSharedAttributes& mrShared;
+public:
+    AquaGraphicsBackendBase(AquaSharedAttributes& rShared)
+        : mrShared( rShared )
+    {}
+    virtual ~AquaGraphicsBackendBase() = 0;
+    AquaSharedAttributes& GetShared() { return mrShared; }
+    SalGraphicsImpl* GetImpl()
+    {
+        if(mpImpl == nullptr)
+            mpImpl = dynamic_cast<SalGraphicsImpl*>(this);
+        return mpImpl;
+    }
+};
+
+inline AquaGraphicsBackendBase::~AquaGraphicsBackendBase() {}
 
+class AquaGraphicsBackend final : public SalGraphicsImpl, public AquaGraphicsBackendBase
+{
+private:
     void drawPixelImpl( tools::Long nX, tools::Long nY, const RGBAColor& rColor); // helper to draw single pixels
 
 #ifdef MACOSX
@@ -400,7 +420,7 @@ public:
 class AquaSalGraphics : public SalGraphicsAutoDelegateToImpl
 {
     AquaSharedAttributes maShared;
-    std::unique_ptr<AquaGraphicsBackend> mpBackend;
+    std::unique_ptr<AquaGraphicsBackendBase> mpBackend;
 
     /// device resolution of this graphics
     sal_Int32                               mnRealDPIX;
@@ -443,7 +463,7 @@ public:
     // InvalidateContext does an UnsetState and sets mrContext to 0
     void                    InvalidateContext();
 
-    AquaGraphicsBackend* getAquaGraphicsBackend() const
+    AquaGraphicsBackendBase* getAquaGraphicsBackend() const
     {
         return mpBackend.get();
     }
diff --git a/vcl/inc/skia/osx/gdiimpl.hxx b/vcl/inc/skia/osx/gdiimpl.hxx
new file mode 100644
index 000000000000..8523d272e897
--- /dev/null
+++ b/vcl/inc/skia/osx/gdiimpl.hxx
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_OSX_GDIIMPL_HXX
+#define INCLUDED_VCL_INC_SKIA_OSX_GDIIMPL_HXX
+
+#include <vcl/dllapi.h>
+
+#include <quartz/salgdi.h>
+
+#include <skia/gdiimpl.hxx>
+#include <skia/utils.hxx>
+
+class VCL_PLUGIN_PUBLIC AquaSkiaSalGraphicsImpl final : public SkiaSalGraphicsImpl,
+                                                        public AquaGraphicsBackendBase
+{
+public:
+    AquaSkiaSalGraphicsImpl(AquaSalGraphics& rParent, AquaSharedAttributes& rShared);
+    virtual ~AquaSkiaSalGraphicsImpl() override;
+
+    virtual void Init() override;
+    virtual void DeInit() override;
+    virtual void freeResources() override;
+    //    virtual void Flush() override;
+
+    static void prepareSkia();
+
+private:
+    virtual void createWindowContext(bool forceRaster = false) override;
+    virtual void performFlush() override;
+    friend std::unique_ptr<sk_app::WindowContext> createVulkanWindowContext(bool);
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_OSX_GDIIMPL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/inc/skia/osx/rastercontext.hxx b/vcl/inc/skia/osx/rastercontext.hxx
new file mode 100644
index 000000000000..84891d4b8642
--- /dev/null
+++ b/vcl/inc/skia/osx/rastercontext.hxx
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_INC_SKIA_OSX_RASTERCONTEXT_HXX
+#define INCLUDED_VCL_INC_SKIA_OSX_RASTERCONTEXT_HXX
+
+#include <tools/sk_app/WindowContext.h>
+
+class AquaSkiaSalGraphicsImpl;
+
+// RasterWindowContext_mac uses OpenGL internally, which
+// we don't want, so make our own raster window context
+// based on SkBitmap, and our code will handle things like flush.
+
+class AquaSkiaWindowContextRaster : public sk_app::WindowContext
+{
+public:
+    AquaSkiaWindowContextRaster(int w, int h, const sk_app::DisplayParams& params);
+    virtual sk_sp<SkSurface> getBackbufferSurface() override { return mSurface; }
+    // Not to be called, our mac code should be used.
+    virtual void swapBuffers(const SkIRect* = nullptr) override { abort(); }
+    virtual bool isValid() override { return mSurface.get(); };
+    virtual void resize(int w, int h) override;
+    virtual void setDisplayParams(const sk_app::DisplayParams& params) override;
+
+protected:
+    virtual bool isGpuContext() override { return false; }
+
+private:
+    void createSurface();
+    sk_sp<SkSurface> mSurface;
+};
+
+#endif // INCLUDED_VCL_INC_SKIA_OSX_RASTERCONTEXT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */