42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include <QtCore/QDebug>
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#include <QtGui/QPainter>
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#include <QtWidgets/QGraphicsSceneMouseEvent>
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#include <mapcanvasmap.h>
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#include <mapcanvas.h>
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#include <maplayer.h>
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#include <QDateTime>
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#pragma execution_character_set("utf-8")
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namespace LAMPMainWidget {
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/// <summary>
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/// 重写paint函数，绘制图层的内容
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/// </summary>
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/// <param name="painter"></param>
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/// <param name="option"></param>
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/// <param name="widget"></param>
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void MapCanvasMap::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget) {
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if (!mLayer->provider().hasContent()) {
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return;
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}
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painter->drawImage(mViewExtent.topLeft(), mLayer->provider().preparedImage());
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}
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QRectF MapCanvasMap::boundingRect() const {
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auto width = mViewExtent.size().width();
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auto height = mViewExtent.size().height();
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return mViewExtent + QMarginsF(1024, 1024, 1024, 1024);
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}
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void MapCanvasMap::setViewExtent(const QRectF& rect) {
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//qDebug() << "更新图层显示对象边界=>" << rect;
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if (rect != mViewExtent) {
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prepareGeometryChange();
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mViewExtent = rect;
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}
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}
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}
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