office-gobmx/include/drawinglayer/primitive2d/exclusiveeditviewprimitive2d.hxx
Armin Le Grand (allotropia) 736c00ece1 Provide tooling for EditView exclusive Primitives
We have the case that e.g. a placeholder Graphic/Text
shall only be processed/shown in the EditView of the
application, but not in any other Primitive-based
usages, including exports, SlideSHow, etc.

I already thought about that when initially converting
Draw/Impress to Primitives, but always found other
solutions, mainly because full XShapes/SdrObjects
had to be taken into account, that can be handled in
VC/VOC/OC implementation. But here we have varying
visualisations of one shape.

Thus I implemented a helper Primitive called
ExclusiveEditViewPrimitive2D. Anything you embed
there will only be processed when the switch to
do so is active in the ViewInformation2D. And
that switch is only set in the EditView paint.

Change-Id: I307f4b0fe7f8faf98789787f216cac7be86a0515
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/165066
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>
2024-03-21 16:07:44 +01:00

59 lines
2.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once
#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
namespace drawinglayer::primitive2d
{
// This primitive is used to encapsulate geometry that is
// to be visualized exclusively to the EditView visualization.
// This is e.g. the case for presentation object placeholder
// data like the placeholder text or placeholder bitmap, but
// can and should be used for more content that should only
// be visible in the EditViews (and not in the exports/SlideShow
// and other usages). For that purpose it checks using the
// information provided by ViewInformation2D in get2DDecomposition
// and decides based on that if the sub-content will be used
// (returned) or suppressed.
class DRAWINGLAYER_DLLPUBLIC ExclusiveEditViewPrimitive2D final : public GroupPrimitive2D
{
public:
explicit ExclusiveEditViewPrimitive2D(Primitive2DContainer&& aChildren);
// despite returning an empty decomposition in some cases,
// range calculation is intended to use hidden geometry, so
// the local implementation will return the children's range
virtual basegfx::B2DRange
getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
/// local decomposition
virtual void
get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor,
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: */