diff options
Diffstat (limited to 'src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp')
| -rw-r--r-- | src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp b/src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp index 7a2251cd..53f3fa62 100644 --- a/src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp +++ b/src-qt5/desktop-utils/lumina-pdf/PrintWidget.cpp @@ -1,6 +1,7 @@ #include "PrintWidget.h" #include <QGraphicsProxyWidget> #include <QPushButton> +#include <QtConcurrent> PrintWidget::PrintWidget(Renderer *backend, QWidget *parent) : QGraphicsView(parent), scene(0), curPage(1), viewMode(SinglePageView), @@ -129,11 +130,23 @@ void PrintWidget::setCurrentPage(int pageNumber) { this->centerOn(pages.at(curPage - 1)); } }*/ - - if (lastPage != curPage){ + QSize DPI(300, 300); + if (lastPage != curPage || !BACKEND->imageSize(curPage).isNull()){ updatePreview(); + for(int i=(curPage-3); i<BACKEND->numPages(); i++){ + if(i<0){ continue; } + else if( i < (curPage-2) ){ BACKEND->clearHash(i); } + else if( i > (curPage+2) ){ BACKEND->clearHash(i); } + else{ + if (BACKEND->loadMultiThread()) { + QtConcurrent::run(BACKEND, &Renderer::renderPage, i, DPI, degrees); + } else { + BACKEND->renderPage(i, DPI, degrees); + } + } + } } - //qDebug() << "Current page set to " << pageNumber << "\n"; + qDebug() << "Current page set to " << pageNumber << "\n"; } void PrintWidget::highlightText(TextData *text) { |