101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
#include "viewercontainer.h"
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#include <QWidget>
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#include <QResizeEvent>
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#include <QScrollBar>
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#include <QVBoxLayout>
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#include "viewerwidget.h"
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#include "panels/viewer.h"
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#include "project/sequence.h"
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#include "debug.h"
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// enforces aspect ratio
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ViewerContainer::ViewerContainer(QWidget *parent) :
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QScrollArea(parent),
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fit(true),
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child(nullptr)
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{
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setFrameShadow(QFrame::Plain);
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setFrameShape(QFrame::NoFrame);
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area = new QWidget(this);
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area->move(0, 0);
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setWidget(area);
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child = new ViewerWidget(area);
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child->container = this;
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}
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ViewerContainer::~ViewerContainer() {
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delete child;
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delete area;
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}
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void ViewerContainer::dragScrollPress(const QPoint &p) {
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drag_start_x = p.x();
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drag_start_y = p.y();
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horiz_start = horizontalScrollBar()->value();
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vert_start = verticalScrollBar()->value();
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}
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void ViewerContainer::dragScrollMove(const QPoint &p) {
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int true_x = p.x() + (horiz_start - horizontalScrollBar()->value());
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int true_y = p.y() + (vert_start - verticalScrollBar()->value());
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horizontalScrollBar()->setValue(horizontalScrollBar()->value() + (drag_start_x - true_x));
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verticalScrollBar()->setValue(verticalScrollBar()->value() + (drag_start_y - true_y));
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drag_start_x = true_x;
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drag_start_y = true_y;
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}
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void ViewerContainer::adjust() {
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if (viewer->seq != nullptr) {
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if (child->waveform) {
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child->move(0, 0);
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child->resize(size());
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} else if (fit) {
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double aspect_ratio = double(viewer->seq->width)/double(viewer->seq->height);
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int widget_x = 0;
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int widget_y = 0;
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int widget_width = width();
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int widget_height = height();
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double widget_ar = double(widget_width) / double(widget_height);
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bool widget_is_wider_than_sequence = widget_ar > aspect_ratio;
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if (widget_is_wider_than_sequence) {
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widget_width = widget_height * aspect_ratio;
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widget_x = (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 = (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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zoom = double(widget_width) / double(viewer->seq->width);
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} else {
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int zoomed_width = double(viewer->seq->width)*zoom;
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int zoomed_height = double(viewer->seq->height)*zoom;
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int zoomed_x = 0;
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int zoomed_y = 0;
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if (zoomed_width < width()) zoomed_x = (width()>>1)-(zoomed_width>>1);
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if (zoomed_height < height()) zoomed_y = (height()>>1)-(zoomed_height>>1);
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child->move(zoomed_x, zoomed_y);
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child->resize(zoomed_width, zoomed_height);
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}
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}
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area->resize(qMax(width(), child->width()), qMax(height(), child->height()));
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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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