summaryrefslogtreecommitdiffstats
path: root/canvas/source/tools/page.hxx
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--canvas/source/tools/page.hxx147
1 files changed, 147 insertions, 0 deletions
diff --git a/canvas/source/tools/page.hxx b/canvas/source/tools/page.hxx
new file mode 100644
index 000000000..14fa17c53
--- /dev/null
+++ b/canvas/source/tools/page.hxx
@@ -0,0 +1,147 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <basegfx/vector/b2isize.hxx>
+#include <basegfx/range/b2irectangle.hxx>
+#include <rendering/icolorbuffer.hxx>
+#include <rendering/irendermodule.hxx>
+#include <rendering/isurface.hxx>
+
+#include <memory>
+#include <vector>
+#include "surfacerect.hxx"
+
+namespace canvas
+{
+ class PageFragment;
+
+ typedef std::shared_ptr< PageFragment > FragmentSharedPtr;
+
+ /** One page of IRenderModule-provided texture space
+ */
+ class Page
+ {
+ public:
+ explicit Page( const std::shared_ptr<IRenderModule>& rRenderModule );
+
+ FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
+ bool nakedFragment( const FragmentSharedPtr& pFragment );
+ void free( const FragmentSharedPtr& pFragment );
+ const std::shared_ptr<ISurface>& getSurface() const { return mpSurface; }
+ bool isValid() const;
+ void validate();
+
+ private:
+ typedef std::vector<FragmentSharedPtr> FragmentContainer_t;
+
+ std::shared_ptr<IRenderModule> mpRenderModule;
+ std::shared_ptr<ISurface> mpSurface;
+ FragmentContainer_t mpFragments;
+
+ bool insert( SurfaceRect& r );
+ bool isValidLocation( const SurfaceRect& r ) const;
+ };
+
+ typedef std::shared_ptr< Page > PageSharedPtr;
+
+
+ /** A part of a page, which gets allocated to a surface
+ */
+ class PageFragment
+ {
+ public:
+ PageFragment( const SurfaceRect& r,
+ Page* pPage ) :
+ mpPage(pPage),
+ maRect(r),
+ mpBuffer(),
+ maSourceOffset()
+ {
+ }
+
+ /// Creates a 'naked' fragment.
+ explicit PageFragment( const ::basegfx::B2ISize& rSize ) :
+ mpPage(nullptr),
+ maRect(rSize),
+ mpBuffer(),
+ maSourceOffset()
+ {
+ }
+
+ bool isNaked() const { return (mpPage == nullptr); }
+ const SurfaceRect& getRect() const { return maRect; }
+ const ::basegfx::B2IPoint& getPos() const { return maRect.maPos; }
+ const ::basegfx::B2ISize& getSize() const { return maRect.maSize; }
+ void setColorBuffer( const std::shared_ptr<IColorBuffer>& pColorBuffer ) { mpBuffer=pColorBuffer; }
+ void setSourceOffset( const ::basegfx::B2IPoint& rOffset ) { maSourceOffset=rOffset; }
+ void setPage( Page* pPage ) { mpPage=pPage; }
+
+ void free( const FragmentSharedPtr& pFragment )
+ {
+ if(mpPage)
+ mpPage->free(pFragment);
+
+ mpPage=nullptr;
+ }
+
+ bool select( bool bRefresh )
+ {
+ // request was made to select this fragment,
+ // but this fragment has not been located on any
+ // of the available pages, we need to hurry now.
+ if(!mpPage)
+ return false;
+
+ std::shared_ptr<ISurface> pSurface(mpPage->getSurface());
+
+ // select this surface before wiping the contents
+ // since a specific implementation could trigger
+ // a rendering operation here...
+ if(!(pSurface->selectTexture()))
+ return false;
+
+ // call refresh() if requested, otherwise we're up to date...
+ return !bRefresh || refresh();
+ }
+
+ bool refresh()
+ {
+ if(!mpPage)
+ return false;
+
+ std::shared_ptr<ISurface> pSurface(mpPage->getSurface());
+
+ return pSurface->update( maRect.maPos,
+ ::basegfx::B2IRectangle(
+ maSourceOffset,
+ maSourceOffset + maRect.maSize ),
+ *mpBuffer );
+ }
+
+ private:
+ Page* mpPage;
+ SurfaceRect maRect;
+ std::shared_ptr<IColorBuffer> mpBuffer;
+ ::basegfx::B2IPoint maSourceOffset;
+ };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */