diff options
Diffstat (limited to 'examples/widgets/pdfviewer/pagerenderer.cpp')
| -rw-r--r-- | examples/widgets/pdfviewer/pagerenderer.cpp | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/examples/widgets/pdfviewer/pagerenderer.cpp b/examples/widgets/pdfviewer/pagerenderer.cpp index 33f555334..7a9df635d 100644 --- a/examples/widgets/pdfviewer/pagerenderer.cpp +++ b/examples/widgets/pdfviewer/pagerenderer.cpp @@ -20,17 +20,18 @@ ******************************************************************************/ #include "pagerenderer.h" + +#include <QElapsedTimer> +#include <QLoggingCategory> #include <QPainter> #include <QPdfDocument> -#include <QLoggingCategory> -#include <QElapsedTimer> #include <QUrl> Q_DECLARE_LOGGING_CATEGORY(lcExample) -PageRenderer::PageRenderer() - : QThread(Q_NULLPTR) - , m_doc(new QPdfDocument(this)) +PageRenderer::PageRenderer(QObject *parent) + : QThread(parent) + , m_document(nullptr) , m_page(0) , m_zoom(1.) , m_minRenderTime(1000000000.) @@ -40,23 +41,9 @@ PageRenderer::PageRenderer() { } -PageRenderer::~PageRenderer() -{ -} - -QVector<QSizeF> PageRenderer::openDocument(const QUrl &location) +void PageRenderer::setDocument(QPdfDocument *document) { - if (location.isLocalFile()) - m_doc.load(location.toLocalFile()); - else { - qCWarning(lcExample, "non-local file loading is not implemented"); - return QVector<QSizeF>(); - } - // TODO maybe do in run() if it takes too long - QVector<QSizeF> pageSizes; - for (int page = 0; page < m_doc.pageCount(); ++page) - pageSizes.append(m_doc.pageSize(page)); - return pageSizes; + m_document = document; } void PageRenderer::requestPage(int page, qreal zoom, Priority priority) @@ -74,16 +61,26 @@ void PageRenderer::run() void PageRenderer::renderPage(int page, qreal zoom) { - QSizeF size = m_doc.pageSize(page) * m_zoom; - QElapsedTimer timer; timer.start(); - const QImage &img = m_doc.render(page, size); - qreal secs = timer.nsecsElapsed() / 1000000000.0; + if (!m_document || m_document->status() != QPdfDocument::Ready) + return; + + const QSizeF size = m_document->pageSize(page) * m_zoom; + + QElapsedTimer timer; + timer.start(); + + const QImage &img = m_document->render(page, size); + + const qreal secs = timer.nsecsElapsed() / 1000000000.0; if (secs < m_minRenderTime) m_minRenderTime = secs; + if (secs > m_maxRenderTime) m_maxRenderTime = secs; + m_totalRenderTime += secs; ++m_totalPagesRendered; + emit pageReady(page, zoom, img); qCDebug(lcExample) << "page" << page << "zoom" << m_zoom << "size" << size << "in" << secs << |