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ImageView big images property

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Пелипенко Иван
2023-01-23 11:22:46 +03:00
parent a0363ba99d
commit 7d7ec8976d
2 changed files with 27 additions and 14 deletions
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35
libs/widgets/image_view.cpp
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@@ -24,8 +24,8 @@ ImageView::ImageView(QWidget * parent): QGraphicsView(parent), item(new QGraphic
scene()->addItem(item); scene()->addItem(item);
viewport()->setAutoFillBackground(false); viewport()->setAutoFillBackground(false);
viewport()->installEventFilter(this); viewport()->installEventFilter(this);
autofit_ = true; autofit_ = smooth_big = true;
interactive_ = false; interactive_ = false;
} }
@@ -87,6 +87,12 @@ void ImageView::clear() {
} }
void ImageView::setSmoothBigImages(bool yes) {
smooth_big = yes;
adjustView();
}
void ImageView::mouseDoubleClickEvent(QMouseEvent *) { void ImageView::mouseDoubleClickEvent(QMouseEvent *) {
autofit(); autofit();
} }
@@ -133,18 +139,21 @@ bool ImageView::eventFilter(QObject * o, QEvent * e) {
void ImageView::adjustView() { void ImageView::adjustView() {
QSize ws = size();
#if QT_VERSION_MAJOR >= 5
ws *= devicePixelRatio();
#endif
int nw = map.size().width();
item->setScale(1.); item->setScale(1.);
if (nw > 0) { if (smooth_big) {
qreal mp = map.width() / nw; QSize ws = size();
if (mp > 1.) { #if QT_VERSION_MAJOR >= 5
QSize ss = map.size(); ws *= devicePixelRatio();
item->setPixmap(map.scaled(map.size() / mp, Qt::KeepAspectRatio, Qt::SmoothTransformation)); #endif
item->setScale(double(ss.width()) / item->pixmap().width()); int nw = map.size().boundedTo(ws).width();
if (nw > 0) {
qreal mp = map.width() / nw;
if (mp > 1.) {
QSize ss = map.size();
item->setPixmap(map.scaled(map.size() / mp, Qt::KeepAspectRatio, Qt::SmoothTransformation));
item->setScale(double(ss.width()) / item->pixmap().width());
} else
item->setPixmap(map);
} else } else
item->setPixmap(map); item->setPixmap(map);
} else } else

6
libs/widgets/image_view.h
View File

@@ -32,6 +32,7 @@ class QAD_WIDGETS_EXPORT ImageView: public QGraphicsView {
Q_OBJECT Q_OBJECT
Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap) Q_PROPERTY(QPixmap pixmap READ pixmap WRITE setPixmap)
Q_PROPERTY(bool viewInteractive READ viewInteractive WRITE setViewInteractive) Q_PROPERTY(bool viewInteractive READ viewInteractive WRITE setViewInteractive)
Q_PROPERTY(bool smoothBigImages READ isSmoothBigImages WRITE setSmoothBigImages)
public: public:
ImageView(QWidget * parent = nullptr); ImageView(QWidget * parent = nullptr);
@@ -44,6 +45,9 @@ public:
bool viewInteractive() const { return interactive_; } bool viewInteractive() const { return interactive_; }
void clear(); void clear();
bool isSmoothBigImages() const { return smooth_big; }
void setSmoothBigImages(bool yes);
public slots: public slots:
void autofit(); void autofit();
void setPixmap(QPixmap pixmap); void setPixmap(QPixmap pixmap);
@@ -62,7 +66,7 @@ private:
QGraphicsPixmapItem * item; QGraphicsPixmapItem * item;
QByteArray im_data; QByteArray im_data;
QPoint prev_pos; QPoint prev_pos;
bool autofit_, interactive_; bool autofit_, interactive_, smooth_big;
QPixmap map; QPixmap map;
}; };