diff options
Diffstat (limited to 'doc/src/snippets/code/doc_src_qt4-arthur.qdoc')
-rw-r--r-- | doc/src/snippets/code/doc_src_qt4-arthur.qdoc | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/doc/src/snippets/code/doc_src_qt4-arthur.qdoc b/doc/src/snippets/code/doc_src_qt4-arthur.qdoc new file mode 100644 index 0000000..6ac30ae --- /dev/null +++ b/doc/src/snippets/code/doc_src_qt4-arthur.qdoc @@ -0,0 +1,104 @@ +//! [0] +QLinearGradient gradient(0, 0, 100, 100); +gradient.setColorAt(0, Qt::red); +gradient.setColorAt(0.5, Qt::green); +gradient.setColorAt(1, Qt::blue); +painter.setBrush(gradient); +painter.drawRect(0, 0, 100, 100); +//! [0] + + +//! [1] +QRadialGradient gradient(50, 50, 50, 30, 30); +gradient.setColorAt(0.2, Qt::white); +gradient.setColorAt(0.8, Qt::green); +gradient.setColorAt(1, Qt::black); +painter.setBrush(gradient); +painter.drawEllipse(0, 0, 100, 100); +//! [1] + + +//! [2] +QConicalGradient gradient(60, 40, 0); +gradient.setColorAt(0, Qt::black); +gradient.setColorAt(0.4, Qt::green); +gradient.setColorAt(0.6, Qt::white); +gradient.setColorAt(1, Qt::black); +painter.setBrush(gradient); +painter.drawEllipse(0, 0, 100, 100); +//! [2] + + +//! [3] +// Specfiy semi-transparent red +painter.setBrush(QColor(255, 0, 0, 127)); +painter.drawRect(0, 0, width()/2, height()); + +// Specify semi-transparend blue +painter.setBrush(QColor(0, 0, 255, 127)); +painter.drawRect(0, 0, width(), height()/2); +//! [3] + + +//! [4] +// One line without anti-aliasing +painter.drawLine(0, 0, width()/2, height()); + +// One line with anti-aliasing +painter.setRenderHint(QPainter::Antialiasing); +painter.drawLine(width()/2, 0, width()/2, height()); +//! [4] + + +//! [5] +QPainterPath path; +path.addRect(20, 20, 60, 60); +path.addBezier(0, 0, 99, 0, 50, 50, 99, 99); +path.addBezier(99, 99, 0, 99, 50, 50, 0, 0); +painter.drawPath(path); +//! [5] + + +//! [6] +QPixmap buffer(size()); +QPainter painter(&buffer); + +// Paint code here + +painter.end(); +bitBlt(this, 0, 0, &buffer); +//! [6] + + +//! [7] +QPainter painter(this); + +// Paint code here + +painter.end(); +//! [7] + + +//! [8] +unbufferedWidget->setAttribute(Qt::WA_PaintOnScreen); +//! [8] + + +//! [9] +QLinearGradient gradient(0, 0, 100, 100); +gradient.setColorAt(0, Qt::blue); +gradient.setColorAt(1, Qt::red); +painter.setPen(QPen(gradient, 0)); +for (int y=fontSize; y<100; y+=fontSize) + drawText(0, y, text); +//! [9] + + +//! [10] +QImage image(100, 100, 32); +QPainter painter(&image); + +// painter commands. + +painter.end(); +//! [10] |