40 lines
1.0 KiB
C++
40 lines
1.0 KiB
C++
#include "viewercontainer.h"
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#include <QWidget>
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#include <QResizeEvent>
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// enforces aspect ratio
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ViewerContainer::ViewerContainer(QWidget *parent) : QWidget(parent) {
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child = NULL;
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aspect_ratio = 1;
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}
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void ViewerContainer::adjust() {
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if (child != NULL) {
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QSize widget_size = size();
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int widget_x = 0;
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int widget_y = 0;
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int widget_width = widget_size.width();
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int widget_height = widget_size.height();
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float widget_ar = (float) widget_width /(float) widget_height;
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bool widget_is_larger_than_sequence = widget_ar > aspect_ratio;
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if (widget_is_larger_than_sequence) {
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widget_width = widget_height * aspect_ratio;
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widget_x = (widget_size.width() / 2) - (widget_width / 2);
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} else {
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widget_height = widget_width / aspect_ratio;
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widget_y = (widget_size.height() / 2) - (widget_height / 2);
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}
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child->move(widget_x, widget_y);
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child->resize(widget_width, widget_height);
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}
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}
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void ViewerContainer::resizeEvent(QResizeEvent *event) {
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event->accept();
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adjust();
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}
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