本文整理汇总了C++中QPrinter::logicalDpiX方法的典型用法代码示例。如果您正苦于以下问题：C++ QPrinter::logicalDpiX方法的具体用法？C++ QPrinter::logicalDpiX怎么用？C++ QPrinter::logicalDpiX使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QPrinter的用法示例。
在下文中一共展示了QPrinter::logicalDpiX方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: logicalDpiX
int QPrinterProto::logicalDpiX() const
{
QPrinter *item = qscriptvalue_cast<QPrinter*>(thisObject());
if (item)
return item->logicalDpiX();
return 0;
}示例2: printf
void printerInvoice::printf(const QString &html)
{
QPrinter p;
QTextDocument doc;
QFont font = doc.defaultFont();
font.setBold(true);
font.setPointSize(font.pointSize());
doc.setDefaultFont(font);
QSizeF s = QSizeF(p.logicalDpiX() * 7.5, p.logicalDpiY() * 7.5);
doc.setPageSize(s);
p.setOutputFormat(QPrinter::NativeFormat);
doc.setHtml(html);
doc.print(&p);
}示例3: exportVector
void Matrix::exportVector(const QString& fileName, int res, bool color, bool keepAspect, QPrinter::PageSize pageSize)
{
if (d_view_type != ImageView)
return;
if ( fileName.isEmpty() ){
QMessageBox::critical(this, tr("QtiPlot - Error"), tr("Please provide a valid file name!"));
return;
}
QPrinter printer;
printer.setCreator("QtiPlot");
printer.setFullPage(true);
if (res)
printer.setResolution(res);
printer.setOutputFileName(fileName);
if (fileName.contains(".eps"))
printer.setOutputFormat(QPrinter::PostScriptFormat);
if (color)
printer.setColorMode(QPrinter::Color);
else
printer.setColorMode(QPrinter::GrayScale);
int cols = numCols();
int rows = numRows();
QRect rect = QRect(0, 0, cols, rows);
if (pageSize == QPrinter::Custom)
printer.setPageSize(Graph::minPageSize(printer, rect));
else
printer.setPageSize(pageSize);
double aspect = (double)cols/(double)rows;
if (aspect < 1)
printer.setOrientation(QPrinter::Portrait);
else
printer.setOrientation(QPrinter::Landscape);
if (keepAspect){// export should preserve aspect ratio
double page_aspect = double(printer.width())/double(printer.height());
if (page_aspect > aspect){
int margin = (int) ((0.1/2.54)*printer.logicalDpiY()); // 1 mm margins
int height = printer.height() - 2*margin;
int width = int(height*aspect);
int x = (printer.width()- width)/2;
rect = QRect(x, margin, width, height);
} else if (aspect >= page_aspect){
int margin = (int) ((0.1/2.54)*printer.logicalDpiX()); // 1 mm margins
int width = printer.width() - 2*margin;
int height = int(width/aspect);
int y = (printer.height()- height)/2;
rect = QRect(margin, y, width, height);
}
} else {
int x_margin = (int) ((0.1/2.54)*printer.logicalDpiX()); // 1 mm margins
int y_margin = (int) ((0.1/2.54)*printer.logicalDpiY()); // 1 mm margins
int width = printer.width() - 2*x_margin;
int height = printer.height() - 2*y_margin;
rect = QRect(x_margin, y_margin, width, height);
}
QPainter paint(&printer);
paint.drawImage(rect, d_matrix_model->renderImage());
paint.end();
}