KoFlakeUtils.h

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/*
 *  SPDX-FileCopyrightText: 2016 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef KOFLAKEUTILS_H
#define KOFLAKEUTILS_H
 
#include <KoShape.h>
#include <KoFlakeTypes.h>
#include <KoShapeStroke.h>
 
#include "kis_global.h"
#include "KoShapeStrokeCommand.h"
 
 
namespace KoFlake {
 
template <typename ModifyFunction>
    auto modifyShapesStrokes(QList<KoShape*> shapes, ModifyFunction modifyFunction)
        -> decltype(modifyFunction(KoShapeStrokeSP()), (KUndo2Command*)(0))
    {
        if (shapes.isEmpty()) return 0;
 
        QList<KoShapeStrokeModelSP> newStrokes;
 
        Q_FOREACH(KoShape *shape, shapes) {
            KoShapeStrokeSP shapeStroke = shape->stroke() ?
                qSharedPointerDynamicCast<KoShapeStroke>(shape->stroke()) :
                KoShapeStrokeSP();
 
            KoShapeStrokeSP newStroke =
                toQShared(shapeStroke ?
                              new KoShapeStroke(*shapeStroke) :
                              new KoShapeStroke());
 
            modifyFunction(newStroke);
 
            newStrokes << newStroke;
        }
 
        return new KoShapeStrokeCommand(shapes, newStrokes);
}
 
template <class Policy>
bool compareShapePropertiesEqual(const QList<KoShape*> shapes, const Policy &policy)
{
    if (shapes.size() == 1) return true;
 
    typename Policy::PointerType bg =
            policy.getProperty(shapes.first());
 
    Q_FOREACH (KoShape *shape, shapes) {
        typename Policy::PointerType otherBg = policy.getProperty(shape);
 
        if (
            !(
                (!bg && !otherBg) ||
                (bg && otherBg && policy.compareTo(bg, otherBg))
                )) {
 
            return false;
        }
    }
 
    return true;
}
 
template <class Policy>
bool compareShapePropertiesEqual(const QList<KoShape*> shapes)
{
    return compareShapePropertiesEqual<Policy>(shapes, Policy());
}
 
}
 
#endif // KOFLAKEUTILS_H