office-gobmx/drawinglayer/inc/primitive2d/wallpaperprimitive2d.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

76 lines
3.2 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* This file incorporates work covered by the following license notice:
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#pragma once
#include <drawinglayer/primitive2d/primitivetools2d.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/wall.hxx>
namespace drawinglayer::primitive2d
{
/** WallpaperBitmapPrimitive2D class
This is a specialized primitive for the Wallpaper definitions included in
VCL and Metafiles. The extraordinary about the bitmap definition part of
the Wallpaper is that it uses PIXEL size of the given Bitmap and not
the logic and/or discrete size derived by PrefMapMode/PrefSize methods.
To emulate this, a ViewTransformation dependent primitive is needed which
takes over the correct scaling(s).
Since a specialized primitive is needed anyways, i opted to also add the
layouting which is dependent from WallpaperStyle; thus it does not need
to be handled anywhere else in the future.
*/
class WallpaperBitmapPrimitive2D final : public ViewTransformationDependentPrimitive2D
{
private:
basegfx::B2DRange maObjectRange;
BitmapEx maBitmapEx;
WallpaperStyle meWallpaperStyle;
/// create local decomposition
virtual Primitive2DReference create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;
public:
/// constructor
WallpaperBitmapPrimitive2D(
const basegfx::B2DRange& rObjectRange,
const BitmapEx& rBitmapEx,
WallpaperStyle eWallpaperStyle);
/// data read access
const basegfx::B2DRange& getLocalObjectRange() const { return maObjectRange; }
const BitmapEx& getBitmapEx() const { return maBitmapEx ; }
WallpaperStyle getWallpaperStyle() const { return meWallpaperStyle; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
/// get B2Drange
virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
/// provide unique ID
virtual sal_uInt32 getPrimitive2DID() const override;
};
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */