diff options
Diffstat (limited to 'examples/widgets/widgets/wiggly/wigglywidget.cpp')
-rw-r--r-- | examples/widgets/widgets/wiggly/wigglywidget.cpp | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/examples/widgets/widgets/wiggly/wigglywidget.cpp b/examples/widgets/widgets/wiggly/wigglywidget.cpp deleted file mode 100644 index d7890ef2b7..0000000000 --- a/examples/widgets/widgets/wiggly/wigglywidget.cpp +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright (C) 2016 The Qt Company Ltd. -// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause - -#include "wigglywidget.h" - -#include <QFontMetrics> -#include <QPainter> -#include <QTimerEvent> - -//! [0] -WigglyWidget::WigglyWidget(QWidget *parent) - : QWidget(parent), step(0) -{ - setBackgroundRole(QPalette::Midlight); - setAutoFillBackground(true); - - QFont newFont = font(); - newFont.setPointSize(newFont.pointSize() + 20); - setFont(newFont); - - timer.start(60, this); -} -//! [0] - -//! [1] -void WigglyWidget::paintEvent(QPaintEvent * /* event */) -//! [1] //! [2] -{ - static constexpr int sineTable[16] = { - 0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38 - }; - - QFontMetrics metrics(font()); - int x = (width() - metrics.horizontalAdvance(text)) / 2; - int y = (height() + metrics.ascent() - metrics.descent()) / 2; - QColor color; -//! [2] - -//! [3] - QPainter painter(this); -//! [3] //! [4] - for (int i = 0; i < text.size(); ++i) { - int index = (step + i) % 16; - color.setHsv((15 - index) * 16, 255, 191); - painter.setPen(color); - painter.drawText(x, y - ((sineTable[index] * metrics.height()) / 400), - QString(text[i])); - x += metrics.horizontalAdvance(text[i]); - } -} -//! [4] - -//! [5] -void WigglyWidget::timerEvent(QTimerEvent *event) -//! [5] //! [6] -{ - if (event->timerId() == timer.timerId()) { - ++step; - update(); - } else { - QWidget::timerEvent(event); - } -//! [6] -} |