KisPaintOpPresetUpdateProxy.cpp

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/*
 *  SPDX-FileCopyrightText: 2016 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#include "KisPaintOpPresetUpdateProxy.h"
 
#include "kis_signal_compressor.h"
 
#include <kis_paintop_preset.h>
 
struct KisPaintOpPresetUpdateProxy::Private
{
    Private()
        : updatesCompressor(100, KisSignalCompressor::FIRST_ACTIVE),
          updatesBlocked(0),
          numUpdatesWhileBlocked(0)
    {
    }
 
    KisSignalCompressor updatesCompressor;
    int updatesBlocked;
    int numUpdatesWhileBlocked;
};
 
KisPaintOpPresetUpdateProxy::KisPaintOpPresetUpdateProxy()
    : m_d(new Private)
{
    connect(&m_d->updatesCompressor, SIGNAL(timeout()), SLOT(slotDeliverSettingsChanged()));
}
 
KisPaintOpPresetUpdateProxy::~KisPaintOpPresetUpdateProxy()
{
}
 
void KisPaintOpPresetUpdateProxy::notifySettingsChanged()
{
    if (m_d->updatesBlocked) {
        m_d->numUpdatesWhileBlocked++;
    } else {
        Q_EMIT sigSettingsChangedUncompressedEarlyWarning();
        Q_EMIT sigSettingsChangedUncompressed();
        m_d->updatesCompressor.start();
    }
}
 
void KisPaintOpPresetUpdateProxy::notifyUniformPropertiesChanged()
{
    Q_EMIT sigUniformPropertiesChanged();
}
 
void KisPaintOpPresetUpdateProxy::postponeSettingsChanges()
{
    m_d->updatesBlocked++;
}
 
void KisPaintOpPresetUpdateProxy::unpostponeSettingsChanges()
{
    m_d->updatesBlocked--;
 
    if (!m_d->updatesBlocked && m_d->numUpdatesWhileBlocked) {
        m_d->numUpdatesWhileBlocked = 0;
        Q_EMIT sigSettingsChangedUncompressedEarlyWarning();
        Q_EMIT sigSettingsChangedUncompressed();
        Q_EMIT sigSettingsChanged();
    }
}
 
void KisPaintOpPresetUpdateProxy::slotDeliverSettingsChanged()
{
    if (m_d->updatesBlocked) {
        m_d->numUpdatesWhileBlocked++;
    } else {
        Q_EMIT sigSettingsChanged();
    }
}