#include "simpleimageview.h"
#include <QDebug>
+#include <QSettings>
#include <QKeyEvent>
+#include <QContextMenuEvent>
+#include <QResizeEvent>
#include <QAction>
#include <QMenu>
-#include <QSettings>
SimpleImageView::SimpleImageView(QWidget *parent) :
QGraphicsView(parent),
- m_img(),
- m_back(NULL)
+ m_back(NULL),
+ m_fitToWindow(NULL),
+ m_scaleUp(NULL),
+ m_scaleDown(NULL),
+ m_scaleNormal(NULL),
+ m_rot90(NULL),
+ m_rot180(NULL),
+ m_imgSrc(),
+ m_scaleFactor(0),
+ m_rotateDeg(0)
{
+ QSettings settings;
+ QPalette pal = palette();
+ pal.setColor(QPalette::Base, settings.value(IniKey_ViewColorBgNormal).value<QColor>());
+ setBackgroundRole(QPalette::Base);
+ setPalette(pal);
+
setContextMenuPolicy(Qt::DefaultContextMenu);
- m_back = new QAction(tr("戻る"), this);
- m_back->setObjectName("back");
QList<QKeySequence> shortcuts;
+ //>>>>> 「戻る」メニュー
+ m_back = new QAction(tr("戻る"), this);
+ m_back->setObjectName("back");
+ shortcuts.clear();
shortcuts << QKeySequence("Return");
shortcuts << QKeySequence("Backspace");
m_back->setShortcuts(shortcuts);
- connect(m_back, SIGNAL(triggered()), this, SLOT(back()));
+ //>>>>> 「ウィンドウにフィット」メニュー
+ m_fitToWindow = new QAction(tr("ウィンドウにフィット"), this);
+ m_fitToWindow->setObjectName("fitToWindow");
+ m_fitToWindow->setCheckable(true);
+ m_fitToWindow->setChecked(true);
+ m_fitToWindow->setShortcut(QKeySequence("Space"));
+
+ //>>>>> 「拡大」メニュー
+ m_scaleUp = new QAction(tr("拡大"), this);
+ m_scaleUp->setObjectName("scaleUp");
+ shortcuts.clear();
+ shortcuts << QKeySequence("+");
+ shortcuts << QKeySequence("Shift++");
+ m_scaleUp->setShortcuts(shortcuts);
+
+ //>>>>> 「縮小」メニュー
+ m_scaleDown = new QAction(tr("縮小"), this);
+ m_scaleDown->setObjectName("scaleDown");
+ m_scaleDown->setShortcut(QKeySequence("-"));
+
+ //>>>>> 「等倍」メニュー
+ m_scaleNormal = new QAction(tr("等倍"), this);
+ m_scaleNormal->setObjectName("scaleUp");
+ shortcuts.clear();
+ shortcuts << QKeySequence("=");
+ shortcuts << QKeySequence("Shift+=");
+ m_scaleNormal->setShortcuts(shortcuts);
+
+ //>>>>> 「右に90度回転」メニュー
+ m_rot90 = new QAction(tr("右に90度回転"), this);
+ m_rot90->setObjectName("rot90");
+ m_rot90->setShortcut(QKeySequence("9"));
+
+ //>>>>> 「右に180度回転」メニュー
+ m_rot180 = new QAction(tr("右に180度回転"), this);
+ m_rot180->setObjectName("rot180");
+ m_rot180->setShortcut(QKeySequence("0"));
+
+ connect(m_back, SIGNAL(triggered()), this, SIGNAL(viewFinished()));
+ connect(m_fitToWindow, SIGNAL(toggled(bool)), this, SLOT(fitToWindow(bool)));
+ connect(m_scaleDown, SIGNAL(triggered()), this, SLOT(scaleDown()));
+ connect(m_scaleNormal, SIGNAL(triggered()), this, SLOT(scaleNormal()));
+ connect(m_scaleUp, SIGNAL(triggered()), this, SLOT(scaleUp()));
+ connect(m_rot90, SIGNAL(triggered()), this, SLOT(rotate90()));
+ connect(m_rot180, SIGNAL(triggered()), this, SLOT(rotate180()));
+
+ setDragMode(ScrollHandDrag);
}
bool SimpleImageView::setSource(const QString &path)
{
- qDebug() << "SimpleImageView::setSource()";
+ QPixmap pixmap(path);
+ if (pixmap.isNull()) {
+ return false;
+ }
- m_img = QPixmap(path);
+ m_imgSrc = pixmap;
+ m_rotateDeg = 0;
+ m_scaleFactor = 0;
+ m_fitToWindow->blockSignals(true);
+ m_fitToWindow->setChecked(true);
+ m_fitToWindow->blockSignals(false);
+
+ QGraphicsScene *scene = new QGraphicsScene(this);
+ scene->addPixmap(pixmap);
+ setScene(scene);
+ return true;
+}
- emit fileInfo(QString("%1x%2x%3bpp")
- .arg(m_img.width())
- .arg(m_img.height())
- .arg(m_img.depth()));
+double SimpleImageView::scaleFactor(const QSize &size)
+{
+ double scaleFactor;
+ if (m_scaleFactor == 0) {
+ double scaleX, scaleY;
+ if (m_rotateDeg == 90 || m_rotateDeg == 270) {
+ scaleX = 1.0 * size.width() / m_imgSrc.height();
+ scaleY = 1.0 * size.height() / m_imgSrc.width();
+ }
+ else {
+ scaleX = 1.0 * size.width() / m_imgSrc.width();
+ scaleY = 1.0 * size.height() / m_imgSrc.height();
+ }
+ scaleFactor = (scaleX > scaleY) ? scaleY : scaleX;
+ }
+ else {
+ scaleFactor = m_scaleFactor;
+ }
- return !m_img.isNull();
+ return scaleFactor;
}
-void SimpleImageView::back()
+void SimpleImageView::sizeChanged()
{
- emit viewFinished();
+ QString str;
+ str = tr("%1px x %2px x %3bpp(%4%)")
+ .arg(m_imgSrc.width())
+ .arg(m_imgSrc.height())
+ .arg(m_imgSrc.depth())
+ .arg(int(scaleFactor(viewport()->size()) * 100));
+ emit fileInfo(str);
}
-void SimpleImageView::paintEvent(QPaintEvent *)
+double SimpleImageView::resizeImage()
{
- qDebug() << "SimpleImageView::paintEvent();";
+ double scaleFactor = this->scaleFactor(viewport()->size());
+ m_rotateDeg %= 360;
- QPainter painter(viewport());
- QPixmap scaledImg;
+ this->setTransform(QTransform());
+ this->translate(width() / 2, height() / 2);
+ this->rotate(m_rotateDeg);
+ this->scale(scaleFactor, scaleFactor);
+ sizeChanged();
- if (m_img.width() < viewport()->width() &&
- m_img.height() < viewport()->height())
- {
- scaledImg = m_img;
+ return scaleFactor;
+}
+
+void SimpleImageView::fitToWindow(bool checked)
+{
+ if (checked) {
+ m_scaleFactor = 0;
}
- else {
- scaledImg = m_img.scaled(viewport()->size(),
- Qt::KeepAspectRatio,
- Qt::SmoothTransformation);
+
+ double scaleFactor = resizeImage();
+
+ if (!checked) {
+ m_scaleFactor = scaleFactor;
}
- QSettings settings;
- painter.setBrush(settings.value(IniKey_ViewColorBgNormal).value<QColor>());
- painter.drawRect(viewport()->rect());
- painter.drawPixmap(
- (viewport()->width() - scaledImg.width()) / 2,
- (viewport()->height() - scaledImg.height()) / 2,
- scaledImg);
+ sizeChanged();
+}
+
+void SimpleImageView::scaleNormal()
+{
+ m_scaleFactor = 1;
+ resizeImage();
+
+ m_fitToWindow->blockSignals(true);
+ m_fitToWindow->setChecked(false);
+ m_fitToWindow->blockSignals(false);
+}
+
+void SimpleImageView::scaleUp()
+{
+ m_scaleFactor = scaleFactor(viewport()->size()) * 1.25;
+ resizeImage();
+
+ m_fitToWindow->blockSignals(true);
+ m_fitToWindow->setChecked(false);
+ m_fitToWindow->blockSignals(false);
+}
+
+void SimpleImageView::scaleDown()
+{
+ m_scaleFactor = scaleFactor(viewport()->size()) * 0.8;
+ resizeImage();
+
+ m_fitToWindow->blockSignals(true);
+ m_fitToWindow->setChecked(false);
+ m_fitToWindow->blockSignals(false);
+}
+
+void SimpleImageView::rotate90()
+{
+ m_rotateDeg += 90;
+ resizeImage();
+}
+
+void SimpleImageView::rotate180()
+{
+ m_rotateDeg += 180;
+ resizeImage();
}
void SimpleImageView::keyPressEvent(QKeyEvent *event)
qDebug() << "SimpleImageView::contextMenuEvent();";
QMenu menu(this);
+ menu.addAction(m_fitToWindow);
+ menu.addAction(m_scaleUp);
+ menu.addAction(m_scaleDown);
+ menu.addAction(m_scaleNormal);
+ menu.addSeparator();
+ menu.addAction(m_rot90);
+ menu.addAction(m_rot180);
+ menu.addSeparator();
menu.addAction(m_back);
menu.exec(event->globalPos());
}
+
+void SimpleImageView::resizeEvent(QResizeEvent *event)
+{
+ if (!m_imgSrc.isNull()) {
+ resizeImage();
+ }
+ QGraphicsView::resizeEvent(event);
+}
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