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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* The context in which a single CanvasItem tree exists. Holds the root node and common state.
*/
#ifndef SEEN_CANVAS_ITEM_CONTEXT_H
#define SEEN_CANVAS_ITEM_CONTEXT_H
#include <2geom/affine.h>
#include "util/funclog.h"
namespace Inkscape {
namespace UI::Widget { class Canvas; }
class CanvasItemGroup;
class CanvasItemContext
{
public:
CanvasItemContext(UI::Widget::Canvas *canvas);
CanvasItemContext(CanvasItemContext const &) = delete;
CanvasItemContext &operator=(CanvasItemContext const &) = delete;
~CanvasItemContext();
// Structure
UI::Widget::Canvas *canvas() const { return _canvas; }
CanvasItemGroup *root() const { return _root; }
// Geometry
Geom::Affine const &affine() const { return _affine; }
void setAffine(Geom::Affine const &affine) { _affine = affine; }
// Snapshotting
void snapshot();
void unsnapshot();
bool snapshotted() const { return _snapshotted; }
template<typename F>
void defer(F &&f) { _snapshotted ? _funclog.emplace(std::forward<F>(f)) : f(); }
private:
// Structure
UI::Widget::Canvas *_canvas;
CanvasItemGroup *_root;
// Geometry
Geom::Affine _affine;
// Snapshotting
char _cacheline_separator[127];
bool _snapshotted = false;
Util::FuncLog _funclog;
};
} // namespace Inkscape
#endif // SEEN_CANVAS_ITEM_CONTEXT_H
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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