office-gobmx/drawinglayer/source/primitive2d/BitmapAlphaPrimitive2D.cxx
Armin Le Grand (Collabora) 3dcee7e080 CairoSDPR: Prepare BitmapAlphaPrimitive2D
This provides a BitmapPrimitive2D extended by a unified
transparency component. It will decompose to a
UnifiedTransparencePrimitive2D containing a
BitmapPrimitive2D and the transparence, so no primitive
processor has to support this primitive directly - but
can if feasible. I plan to use that ASAP

Change-Id: I83ec84eaadc8ba2b21f0ba0cb1fdcf43bdc455db
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170852
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>
2024-07-22 20:06:20 +02:00

105 lines
3.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
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* 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 <drawinglayer/primitive2d/BitmapAlphaPrimitive2D.hxx>
#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>
#include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <com/sun/star/awt/XBitmap.hpp>
#include <utility>
using namespace com::sun::star;
namespace drawinglayer::primitive2d
{
Primitive2DReference BitmapAlphaPrimitive2D::create2DDecomposition(
const geometry::ViewInformation2D& /*rViewInformation*/) const
{
if (basegfx::fTools::equal(getTransparency(), 1.0))
{
// completely transparent, done
return nullptr;
}
if (getBitmap().IsEmpty())
{
// no geometry, done
return nullptr;
}
if (basegfx::fTools::equalZero(getTransparency()))
{
// no transparency, use simple BitmapPrimitive2D
return Primitive2DReference{ new BitmapPrimitive2D(getBitmap(), getTransform()) };
}
// default: embed to UnifiedTransparencePrimitive2D
Primitive2DContainer aContent{ new BitmapPrimitive2D(getBitmap(), getTransform()) };
return Primitive2DReference{ new UnifiedTransparencePrimitive2D(std::move(aContent),
getTransparency()) };
}
BitmapAlphaPrimitive2D::BitmapAlphaPrimitive2D(BitmapEx xXBitmap, basegfx::B2DHomMatrix aTransform,
double fTransparency)
: maBitmap(std::move(xXBitmap))
, maTransform(std::move(aTransform))
, mfTransparency(std::max(0.0, std::min(1.0, fTransparency)))
{
}
bool BitmapAlphaPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
if (BasePrimitive2D::operator==(rPrimitive))
{
const BitmapAlphaPrimitive2D& rCompare
= static_cast<const BitmapAlphaPrimitive2D&>(rPrimitive);
return (getBitmap() == rCompare.getBitmap() && getTransform() == rCompare.getTransform()
&& basegfx::fTools::equal(getTransparency(), rCompare.getTransparency()));
}
return false;
}
basegfx::B2DRange
BitmapAlphaPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const
{
basegfx::B2DRange aRetval(0.0, 0.0, 1.0, 1.0);
aRetval.transform(maTransform);
return aRetval;
}
sal_Int64 BitmapAlphaPrimitive2D::estimateUsage()
{
if (getBitmap().IsEmpty())
{
return 0;
}
return getBitmap().GetSizeBytes();
}
// provide unique ID
sal_uInt32 BitmapAlphaPrimitive2D::getPrimitive2DID() const
{
return PRIMITIVE2D_ID_BITMAPALPHAPRIMITIVE2D;
}
} // end of namespace
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */