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// SPDX-License-Identifier: GPL-2.0-or-later
/**
* @file
* Abstraction for different style widget operands. Used by ObjectCompositeSettings in Layers and
* Fill and Stroke dialogs. Dialog is responsible for keeping desktop pointer valid.
*
* This class is due to the need to differentiate between layers and objects but a layer is just a
* a group object with an extra tag. There should be no need to differentiate between the two.
* To do: remove this class and intergrate the functionality into ObjectCompositeSettings.
*/
/*
* Copyright (C) 2007 MenTaLguY <mental@rydia.net>
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef SEEN_INKSCAPE_UI_WIDGET_STYLE_SUBJECT_H
#define SEEN_INKSCAPE_UI_WIDGET_STYLE_SUBJECT_H
#include <optional>
#include <2geom/rect.h>
#include <cstddef>
#include <sigc++/sigc++.h>
#include "object/sp-item.h"
#include "object/sp-tag.h"
#include "object/sp-tag-use.h"
#include "object/sp-tag-use-reference.h"
class SPDesktop;
class SPObject;
class SPCSSAttr;
class SPStyle;
namespace Inkscape {
class Selection;
}
namespace Inkscape {
namespace UI {
namespace Widget {
class StyleSubject {
public:
class Selection;
class CurrentLayer;
StyleSubject();
virtual ~StyleSubject();
void setDesktop(SPDesktop *desktop);
SPDesktop *getDesktop() const { return _desktop; }
virtual Geom::OptRect getBounds(SPItem::BBoxType type) = 0;
virtual int queryStyle(SPStyle *query, int property) = 0;
virtual void setCSS(SPCSSAttr *css) = 0;
virtual std::vector<SPObject*> list(){return std::vector<SPObject*>();};
sigc::connection connectChanged(sigc::signal<void ()>::slot_type slot) {
return _changed_signal.connect(slot);
}
protected:
virtual void _afterDesktopSwitch(SPDesktop */*desktop*/) {}
void _emitChanged() { _changed_signal.emit(); }
void _emitModified(Inkscape::Selection* selection, guint flags) {
// Do not say this object has styles unless it's style has been modified
if (flags & (SP_OBJECT_STYLE_MODIFIED_FLAG)) {
_emitChanged();
}
}
private:
sigc::signal<void ()> _changed_signal;
SPDesktop *_desktop = nullptr;
};
class StyleSubject::Selection : public StyleSubject {
public:
Selection();
~Selection() override;
Geom::OptRect getBounds(SPItem::BBoxType type) override;
int queryStyle(SPStyle *query, int property) override;
void setCSS(SPCSSAttr *css) override;
std::vector<SPObject*> list() override;
protected:
void _afterDesktopSwitch(SPDesktop *desktop) override;
private:
Inkscape::Selection *_getSelection() const;
sigc::connection _sel_changed;
sigc::connection _subsel_changed;
sigc::connection _sel_modified;
};
}
}
}
#endif // SEEN_INKSCAPE_UI_WIDGET_STYLE_SUBJECT_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:fileencoding=utf-8:textwidth=99 :
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