office-gobmx/include/drawinglayer/primitive2d/discretebitmapprimitive2d.hxx
Noel Grandin 3b83c6ac80 make BufferedDecompositionPrimitive2D store a Primitive2DReference..
.. instead of a Primitive2DContainer.

The container very frequently contains only a single item, since
the decomposition method often sticks only a single top-level node
in there, so it turns out to be a net loss overall, memory
consumption-wise.

Also, if we return a single Primitive2DReference from
a BufferedDecomposition, that maximises the sharing of
data between the BufferedDecomposition objects at the
bottom of the decomposed tree, and objects higher up.

Change-Id: Iaf272e60e2997299cc35a1bd209c51b6b79e9a8b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/162976
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2024-02-12 11:36:05 +01:00

70 lines
2.6 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* 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:
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* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
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* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
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*/
#pragma once
#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/primitivetools2d.hxx>
#include <vcl/bitmapex.hxx>
// DiscreteBitmapPrimitive2D class
namespace drawinglayer::primitive2d
{
/** DiscreteBitmapPrimitive2D class
This class defines a view-dependent BitmapPrimitive which has a
logic position for the top-left position and is always to be
painted in 1:1 pixel resolution. It will never be sheared, rotated
or scaled with the view.
*/
class DRAWINGLAYER_DLLPUBLIC DiscreteBitmapPrimitive2D final : public ObjectAndViewTransformationDependentPrimitive2D
{
private:
/// the RGBA Bitmap-data
BitmapEx maBitmapEx;
/** the top-left object position */
basegfx::B2DPoint maTopLeft;
/// local decomposition.
virtual Primitive2DReference create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;
public:
/// constructor
DiscreteBitmapPrimitive2D(
const BitmapEx& rBitmapEx,
const basegfx::B2DPoint& rTopLeft);
/// data read access
const BitmapEx& getBitmapEx() const { return maBitmapEx; }
const basegfx::B2DPoint& getTopLeft() const { return maTopLeft; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
/// provide unique ID
virtual sal_uInt32 getPrimitive2DID() const override;
};
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */