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https://github.com/YACReader/yacreader
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fdba938fe8
Not all possible keyboard modifiers of a wheel event change MagnifyingGlass's pixmap. So in case of e.g. MetaModifier or more than one modifier, MagnifyingGlass::wheelEvent() calls updateImage() to no avail. Move the updateImage() call into the public slots to make them self-sufficient. This also allows not to call updateImage() when the pixmap is not changed in case the adjusted parameter has reached its minimum or maximum value already.
37 lines
823 B
C++
37 lines
823 B
C++
#ifndef __MAGNIFYING_GLASS
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#define __MAGNIFYING_GLASS
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#include <QLabel>
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#include <QtGui>
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#include <QMouseEvent>
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#include <QWidget>
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class MagnifyingGlass : public QLabel
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{
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Q_OBJECT
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private:
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float zoomLevel;
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void setup(const QSize &size);
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void resizeAndUpdate(int w, int h);
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void keyPressEvent(QKeyEvent *event) override;
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public:
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MagnifyingGlass(int width, int height, QWidget *parent);
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MagnifyingGlass(const QSize &size, QWidget *parent);
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void mouseMoveEvent(QMouseEvent *event) override;
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public slots:
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void updateImage(int x, int y);
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void updateImage();
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void wheelEvent(QWheelEvent *event) override;
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void zoomIn();
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void zoomOut();
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void sizeUp();
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void sizeDown();
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void heightUp();
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void heightDown();
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void widthUp();
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void widthDown();
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};
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#endif
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