diff --git a/lib/crop/cropwidget.cpp b/lib/crop/cropwidget.cpp index fce5d7d1..0e473bc7 100644 --- a/lib/crop/cropwidget.cpp +++ b/lib/crop/cropwidget.cpp @@ -1,307 +1,306 @@ // vim: set tabstop=4 shiftwidth=4 expandtab: /* Gwenview: an image viewer Copyright 2007 Aurélien Gâteau This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ // Self #include "cropwidget.moc" // Qt #include #include #include // KDE #include #include #include #include #include // Local #include #include "croptool.h" #include "signalblocker.h" #include "ui_cropwidget.h" namespace Gwenview { // Euclidean algorithm to compute the greatest common divisor of two integers. // Found at: // http://en.wikipedia.org/wiki/Euclidean_algorithm static int gcd(int a, int b) { return b == 0 ? a : gcd(b, a % b); } static QSize screenRatio() { const QRect rect = QApplication::desktop()->screenGeometry(); const int width = rect.width(); const int height = rect.height(); const int divisor = gcd(width, height); return QSize(width / divisor, height / divisor); } struct CropWidgetPrivate : public Ui_CropWidget { CropWidget* q; Document::Ptr mDocument; CropTool* mCropTool; bool mUpdatingFromCropTool; bool ratioIsConstrained() const { return cropRatio() > 0; } double cropRatio() const { const QStringList lst = ratioComboBox->currentText().split(':'); if (lst.size() != 2) { return 0; } bool ok; const double width = lst[0].toDouble(&ok); if (!ok) { return 0; } const double height = lst[1].toDouble(&ok); if (!ok) { return 0; } return height / width; } void addRatioToComboBox(const QSize& size, const QString& label = QString()) { QString text = QString("%1:%2").arg(size.width()).arg(size.height()); if (!label.isEmpty()) { text += QString(" (%1)").arg(label); } ratioComboBox->addItem(text, QVariant(size)); } void addSeparatorToComboBox() { ratioComboBox->insertSeparator(ratioComboBox->count()); } void initRatioComboBox() { QList ratioList; ratioList << QSize(3, 2) << QSize(4, 3) << QSize(5, 4) - << QSize(6, 4) << QSize(7, 5); addRatioToComboBox(QSize(1, 1), i18n("Square")); addRatioToComboBox(screenRatio(), i18n("This Screen")); addSeparatorToComboBox(); Q_FOREACH(const QSize & size, ratioList) { addRatioToComboBox(size); } addSeparatorToComboBox(); Q_FOREACH(QSize size, ratioList) { size.transpose(); addRatioToComboBox(size); } ratioComboBox->setMaxVisibleItems(ratioComboBox->count()); ratioComboBox->setEditText(QString()); KLineEdit* edit = qobject_cast(ratioComboBox->lineEdit()); Q_ASSERT(edit); // Do not use i18n("%1:%2") because ':' should not be translated, it is // used to parse the ratio string. edit->setClickMessage(QString("%1:%2").arg(i18n("Width")).arg(i18n("Height"))); } QRect cropRect() const { QRect rect( leftSpinBox->value(), topSpinBox->value(), widthSpinBox->value(), heightSpinBox->value() ); return rect; } void initSpinBoxes() { QSize size = mDocument->size(); leftSpinBox->setMaximum(size.width()); widthSpinBox->setMaximum(size.width()); topSpinBox->setMaximum(size.height()); heightSpinBox->setMaximum(size.height()); } void initDialogButtonBox() { QPushButton* cropButton = dialogButtonBox->button(QDialogButtonBox::Ok); cropButton->setIcon(KIcon("transform-crop-and-resize")); cropButton->setText(i18n("Crop")); QObject::connect(dialogButtonBox, SIGNAL(accepted()), q, SIGNAL(cropRequested())); QObject::connect(dialogButtonBox, SIGNAL(rejected()), q, SIGNAL(done())); } }; CropWidget::CropWidget(QWidget* parent, RasterImageView* imageView, CropTool* cropTool) : QWidget(parent) , d(new CropWidgetPrivate) { setWindowFlags(Qt::Tool); d->q = this; d->mDocument = imageView->document(); d->mUpdatingFromCropTool = false; d->mCropTool = cropTool; d->setupUi(this); setFont(KGlobalSettings::smallestReadableFont()); layout()->setMargin(KDialog::marginHint()); layout()->setSizeConstraint(QLayout::SetFixedSize); connect(d->advancedCheckBox, SIGNAL(toggled(bool)), d->advancedWidget, SLOT(setVisible(bool))); d->advancedWidget->setVisible(false); d->advancedWidget->layout()->setMargin(0); d->initRatioComboBox(); connect(d->mCropTool, SIGNAL(rectUpdated(QRect)), SLOT(setCropRect(QRect))); connect(d->leftSpinBox, SIGNAL(valueChanged(int)), SLOT(slotPositionChanged())); connect(d->topSpinBox, SIGNAL(valueChanged(int)), SLOT(slotPositionChanged())); connect(d->widthSpinBox, SIGNAL(valueChanged(int)), SLOT(slotWidthChanged())); connect(d->heightSpinBox, SIGNAL(valueChanged(int)), SLOT(slotHeightChanged())); d->initDialogButtonBox(); connect(d->ratioComboBox, SIGNAL(editTextChanged(QString)), SLOT(slotRatioComboBoxEditTextChanged())); connect(d->ratioComboBox, SIGNAL(activated(int)), SLOT(slotRatioComboBoxActivated())); // Don't do this before signals are connected, otherwise the tool won't get // initialized d->initSpinBoxes(); setCropRect(d->mCropTool->rect()); } CropWidget::~CropWidget() { delete d; } void CropWidget::setCropRect(const QRect& rect) { d->mUpdatingFromCropTool = true; d->leftSpinBox->setValue(rect.left()); d->topSpinBox->setValue(rect.top()); d->widthSpinBox->setValue(rect.width()); d->heightSpinBox->setValue(rect.height()); d->mUpdatingFromCropTool = false; } void CropWidget::slotPositionChanged() { const QSize size = d->mDocument->size(); d->widthSpinBox->setMaximum(size.width() - d->leftSpinBox->value()); d->heightSpinBox->setMaximum(size.height() - d->topSpinBox->value()); if (d->mUpdatingFromCropTool) { return; } d->mCropTool->setRect(d->cropRect()); } void CropWidget::slotWidthChanged() { d->leftSpinBox->setMaximum(d->mDocument->width() - d->widthSpinBox->value()); if (d->mUpdatingFromCropTool) { return; } if (d->ratioIsConstrained()) { int height = int(d->widthSpinBox->value() * d->cropRatio()); d->heightSpinBox->setValue(height); } d->mCropTool->setRect(d->cropRect()); } void CropWidget::slotHeightChanged() { d->topSpinBox->setMaximum(d->mDocument->height() - d->heightSpinBox->value()); if (d->mUpdatingFromCropTool) { return; } if (d->ratioIsConstrained()) { int width = int(d->heightSpinBox->value() / d->cropRatio()); d->widthSpinBox->setValue(width); } d->mCropTool->setRect(d->cropRect()); } void CropWidget::applyRatioConstraint() { double ratio = d->cropRatio(); d->mCropTool->setCropRatio(ratio); if (!d->ratioIsConstrained()) { return; } QRect rect = d->cropRect(); rect.setHeight(int(rect.width() * ratio)); d->mCropTool->setRect(rect); } void CropWidget::slotRatioComboBoxEditTextChanged() { applyRatioConstraint(); } void CropWidget::slotRatioComboBoxActivated() { // If the ratioComboBox contains text like this: "w:h (foo bar)", change it // to "w:h" only, so that it's easier to edit for the user. QStringList lst = d->ratioComboBox->currentText().split(' '); if (lst.size() > 1) { SignalBlocker blocker(d->ratioComboBox); d->ratioComboBox->setEditText(lst[0]); applyRatioConstraint(); } } } // namespace