File indexing completed on 2024-05-19 04:36:36

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2014 Dominik Haumann <dhaumann@kde.org>
  *
  * This library is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as published
  * by the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #include "OpacityEditor.h"
 
 #include <QApplication>
 #include <QHBoxLayout>
 #include <QSpinBox>
 #include <QSlider>
 
 namespace tikz {
 namespace ui {
 
 class OpacityEditorPrivate
 {
 public:
     QSpinBox * spinBox;
     QSlider * slider;
     int intOpacity = 100;
 };
 
 OpacityEditor::OpacityEditor(QWidget * parent)
     : QWidget(parent)
     , d(new OpacityEditorPrivate())
 {
     auto hboxLayout = new QHBoxLayout(this);
     hboxLayout->setContentsMargins(0, 0, 0, 0);
 
     d->spinBox = new QSpinBox(this);
     d->slider = new QSlider(Qt::Horizontal, this);
 
     hboxLayout->addWidget(d->spinBox);
     hboxLayout->addWidget(d->slider);
 
     d->spinBox->setFrame(false);
     d->spinBox->setKeyboardTracking(false);
     d->spinBox->setRange(0, 100);
     d->spinBox->setSingleStep(10);
     d->spinBox->setSuffix("%");
     d->spinBox->setValue(100);
 
     d->slider->setRange(0, 100);
     d->slider->setPageStep(10);
     d->slider->setSingleStep(10);
     d->slider->setValue(100);
     d->slider->setToolTip("Hold down shift for fine adjustment.");
 
     setFocusProxy(d->spinBox);
 
     connect(d->spinBox, SIGNAL(valueChanged(int)), this, SLOT(slotSpinBoxChanged(int)));
     connect(d->slider, SIGNAL(valueChanged(int)), this, SLOT(slotSliderChanged(int)));
 }
 
 OpacityEditor::~OpacityEditor()
 {
     delete d;
 }
 
 void OpacityEditor::setValue(qreal opacity)
 {
     Q_ASSERT(opacity >= 0);
     Q_ASSERT(opacity <= 1.0);
 
     const int value = static_cast<int>(qRound(opacity * 100.0));
 
     if (d->intOpacity == value) {
         return;
     }
 
     d->intOpacity = value;
 
     const bool blockSpinBox = d->spinBox->blockSignals(true);
     const bool blockSlider = d->slider->blockSignals(true);
 
     d->spinBox->setValue(value);
     d->slider->setValue(value);
 
     d->spinBox->blockSignals(blockSpinBox);
     d->slider->blockSignals(blockSlider);
 }
 
 qreal OpacityEditor::value() const
 {
     return d->intOpacity / 100.0;
 }
 
 void OpacityEditor::setReadOnly(bool readOnly)
 {
     d->spinBox->setReadOnly(readOnly);
     d->slider->setDisabled(readOnly);
 }
 
 void OpacityEditor::slotSliderChanged(int opacity)
 {
     const bool snap = QApplication::keyboardModifiers() ^ Qt::ShiftModifier;
 
     if (snap) {
         opacity = 10 * qRound(opacity / 10.0);
     }
 
     if (d->intOpacity != opacity) {
         setValue(opacity / 100.0);
         Q_EMIT valueChanged(d->intOpacity / 100.0);
     } else if (d->slider->value() != opacity) {
         const bool blockSlider = d->slider->blockSignals(true);
         d->slider->setValue(opacity);
         d->slider->blockSignals(blockSlider);
     }
 }
 
 void OpacityEditor::slotSpinBoxChanged(int opacity)
 {
     if (opacity != d->intOpacity) {
         setValue(opacity / 100.0);
         Q_EMIT valueChanged(d->intOpacity / 100.0);
     }
 }
 
 }
 }
 
 // kate: indent-width 4; replace-tabs on;