Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 195 insertions, 0 deletions

diff --git a/canvas/source/cairo/cairo_spritehelper.cxx b/canvas/source/cairo/cairo_spritehelper.cxx
new file mode 100644
index 000000000..b3806f0e9
--- /dev/null
+++ b/canvas/source/cairo/cairo_spritehelper.cxx
@@ -0,0 +1,195 @@
+/* -*- 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 .
+ */
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/numeric/ftools.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/utils/canvastools.hxx>
+#include <rtl/math.hxx>
+#include <tools/diagnose_ex.h>
+
+#include <cairo.h>
+#include <pixman.h>
+
+#include "cairo_spritehelper.hxx"
+
+using namespace ::cairo;
+using namespace ::com::sun::star;
+
+namespace cairocanvas
+{
+    SpriteHelper::SpriteHelper() :
+        mbTextureDirty(true)
+    {}
+
+    void SpriteHelper::init( const geometry::RealSize2D& rSpriteSize,
+                             const SpriteCanvasRef&      rSpriteCanvas )
+    {
+        ENSURE_OR_THROW( rSpriteCanvas,
+                          "SpriteHelper::init(): Invalid device, sprite canvas or surface" );
+
+        mpSpriteCanvas     = rSpriteCanvas;
+        mbTextureDirty     = true;
+
+        // also init base class
+        CanvasCustomSpriteHelper::init( rSpriteSize, rSpriteCanvas );
+    }
+
+    void SpriteHelper::setSurface( const SurfaceSharedPtr& pBufferSurface )
+    {
+        mpBufferSurface = pBufferSurface;
+    }
+
+    void SpriteHelper::disposing()
+    {
+        mpBufferSurface.reset();
+        mpSpriteCanvas.clear();
+
+        // forward to parent
+        CanvasCustomSpriteHelper::disposing();
+    }
+
+    void SpriteHelper::redraw( const CairoSharedPtr&      pCairo,
+                               const ::basegfx::B2DPoint& rPos,
+                               bool&                      /*io_bSurfacesDirty*/,
+                               bool                       /*bBufferedUpdate*/ ) const
+    {
+#ifdef CAIRO_CANVAS_PERF_TRACE
+        struct timespec aTimer;
+        mxDevice->startPerfTrace( &aTimer );
+#endif
+
+        const double fAlpha( getAlpha() );
+        const ::basegfx::B2DHomMatrix aTransform( getTransformation() );
+
+        if( !isActive() || ::basegfx::fTools::equalZero( fAlpha ) )
+            return;
+
+        SAL_INFO( "canvas.cairo", "CanvasCustomSprite::redraw called");
+        if( !pCairo )
+            return;
+
+        basegfx::B2DVector aSize = getSizePixel();
+        cairo_save( pCairo.get() );
+
+        double fX, fY;
+
+        fX = rPos.getX();
+        fY = rPos.getY();
+
+        if( !aTransform.isIdentity() )
+        {
+            cairo_matrix_t aMatrix, aInverseMatrix;
+            cairo_matrix_init( &aMatrix,
+                               aTransform.get( 0, 0 ), aTransform.get( 1, 0 ), aTransform.get( 0, 1 ),
+                               aTransform.get( 1, 1 ), aTransform.get( 0, 2 ), aTransform.get( 1, 2 ) );
+
+            aMatrix.x0 = basegfx::fround( aMatrix.x0 );
+            aMatrix.y0 = basegfx::fround( aMatrix.y0 );
+
+            cairo_matrix_init( &aInverseMatrix, aMatrix.xx, aMatrix.yx, aMatrix.xy, aMatrix.yy, aMatrix.x0, aMatrix.y0 );
+            cairo_matrix_invert( &aInverseMatrix );
+            cairo_matrix_transform_distance( &aInverseMatrix, &fX, &fY );
+
+            cairo_set_matrix( pCairo.get(), &aMatrix );
+        }
+
+        fX = basegfx::fround( fX );
+        fY = basegfx::fround( fY );
+
+        cairo_matrix_t aOrigMatrix;
+        cairo_get_matrix( pCairo.get(), &aOrigMatrix );
+        cairo_translate( pCairo.get(), fX, fY );
+
+        if( getClip().is() )
+        {
+            const uno::Reference<rendering::XPolyPolygon2D>& rClip( getClip() );
+
+            ::basegfx::B2DPolyPolygon aClipPoly(
+                ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(
+                    rClip ));
+
+            doPolyPolygonImplementation( aClipPoly, Clip, pCairo.get(),
+                                         nullptr, SurfaceProviderRef(mpSpriteCanvas),
+                                         rClip->getFillRule() );
+        }
+
+        SAL_INFO( "canvas.cairo","aSize " << aSize.getX() << " x " << aSize.getY() << " position: " << fX << "," << fY );
+        cairo_rectangle( pCairo.get(), 0, 0, floor( aSize.getX() ), floor( aSize.getY() ) );
+        cairo_clip( pCairo.get() );
+        cairo_set_matrix( pCairo.get(), &aOrigMatrix );
+
+        cairo_matrix_t aInverseMatrix = aOrigMatrix;
+        bool matrixProblem = false;
+        // tdf#125949: Cairo internally uses the pixman library, and _cairo_matrix_to_pixman_matrix()
+        // checks all matrix components to fix PIXMAN_MAX_INT, which is about 32k. Which means that
+        // if our transformation is large, such as an initial step of some zooming animations,
+        // the conversion will fail. To make things worse, once something in cairo fails, it's treated
+        // as a fatal error, the error status of that cairo_t gets set, and there's no way to reset it
+        // besides recreating the whole cairo_t
+        // (https://lists.cairographics.org/archives/cairo/2006-September/007892.html).
+        // So copy&paste PIXMAN_MAX_INT here, and if our matrix could fail, bail out.
+#define PIXMAN_MAX_INT ((pixman_fixed_1 >> 1) - pixman_fixed_e) /* need to ensure deltas also fit */
+        if(cairo_matrix_invert(&aInverseMatrix) == CAIRO_STATUS_SUCCESS)
+        {
+            if(abs(aOrigMatrix.xx) > PIXMAN_MAX_INT || abs(aOrigMatrix.xx) > PIXMAN_MAX_INT
+                || abs(aOrigMatrix.xy) > PIXMAN_MAX_INT || abs(aOrigMatrix.yx) > PIXMAN_MAX_INT
+                || abs(aOrigMatrix.x0) > PIXMAN_MAX_INT || abs(aOrigMatrix.y0) > PIXMAN_MAX_INT
+                || abs(aInverseMatrix.xx) > PIXMAN_MAX_INT || abs(aInverseMatrix.xx) > PIXMAN_MAX_INT
+                || abs(aInverseMatrix.xy) > PIXMAN_MAX_INT || abs(aInverseMatrix.yx) > PIXMAN_MAX_INT
+                || abs(aInverseMatrix.x0) > PIXMAN_MAX_INT || abs(aInverseMatrix.y0) > PIXMAN_MAX_INT)
+                matrixProblem = true;
+#undef PIXMAN_MAX_INT
+        }
+        else
+            matrixProblem = true;
+        if(matrixProblem)
+        {
+            SAL_WARN( "canvas.cairo", "matrix would overflow PIXMAN_MAX_INT, avoiding drawing" );
+            cairo_restore( pCairo.get() );
+            return;
+        }
+
+        if( isContentFullyOpaque() )
+            cairo_set_operator( pCairo.get(), CAIRO_OPERATOR_SOURCE );
+        cairo_set_source_surface( pCairo.get(),
+                                  mpBufferSurface->getCairoSurface().get(),
+                                  fX, fY );
+        if( ::rtl::math::approxEqual( fAlpha, 1.0 ) )
+            cairo_paint( pCairo.get() );
+        else
+            cairo_paint_with_alpha( pCairo.get(), fAlpha );
+
+        cairo_restore( pCairo.get() );
+
+#ifdef CAIRO_CANVAS_PERF_TRACE
+        mxDevice->stopPerfTrace( &aTimer, "sprite redraw" );
+#endif
+    }
+
+    ::basegfx::B2DPolyPolygon SpriteHelper::polyPolygonFromXPolyPolygon2D( uno::Reference< rendering::XPolyPolygon2D >& xPoly ) const
+    {
+        return ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPoly);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */