diff options
author | David Boddie <david.boddie@nokia.com> | 2011-05-11 17:35:46 +0200 |
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committer | David Boddie <david.boddie@nokia.com> | 2011-05-23 14:24:07 +0200 |
commit | 0cbcc61ef35b9bce1d65d048853c79004b755b87 (patch) | |
tree | 0e10f00827d9d3b84862e371d163f1b2774ee996 /examples/widgets/symbianvibration/vibrationsurface.cpp | |
parent | 0748751c9f097d9d866605306bbdd4b96e2a5c4e (diff) |
Squashed commit of changes from the 4.8-temp branch.
Diffstat (limited to 'examples/widgets/symbianvibration/vibrationsurface.cpp')
-rw-r--r-- | examples/widgets/symbianvibration/vibrationsurface.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/examples/widgets/symbianvibration/vibrationsurface.cpp b/examples/widgets/symbianvibration/vibrationsurface.cpp new file mode 100644 index 0000000000..5e2e962bad --- /dev/null +++ b/examples/widgets/symbianvibration/vibrationsurface.cpp @@ -0,0 +1,117 @@ +#include "vibrationsurface.h" +#include <QtGui/QPainter> +#include <QtCore/QLine> +#include <QtGui/QMouseEvent> +#include <QtGui/QScreen> +#include <QtCore/QRect> +#include <QtGui/QColor> + +#include "xqvibra.h" + +//! [4] +const int NumberOfLevels = 10; +const double IntensityFactor = XQVibra::MaxIntensity / NumberOfLevels; +//! [4] + +VibrationSurface::VibrationSurface(XQVibra *vibra, QWidget *parent) : + QWidget(parent), + vibra(vibra), + lastIntensity(0) +{ +} + +//! [0] +void VibrationSurface::mousePressEvent(QMouseEvent *event) +{ + applyIntensity(event->x(), event->y()); + vibra->start(); +} +//! [0] + +//! [1] +void VibrationSurface::mouseMoveEvent(QMouseEvent *event) +{ + applyIntensity(event->x(), event->y()); +} +//! [1] + +//! [2] +void VibrationSurface::mouseReleaseEvent(QMouseEvent *) +{ + vibra->stop(); +} +//! [2] + +//! [5] +void VibrationSurface::paintEvent(QPaintEvent *) +{ + QPainter painter(this); + QRect rect = geometry(); + int dx = 0, dy = 0; + + if (height() > width()) { + dy = height() / NumberOfLevels; + rect.setHeight(dy); + } else { + dx = width() / NumberOfLevels; + rect.setWidth(dx); + } +//! [5] +//! [6] + for (int i = 0; i < NumberOfLevels; i++) { + int x = i * dx; + int y = i * dy; + int intensity = getIntensity(x, y); + QColor color = QColor(40, 80, 10).lighter(100 + intensity); + + rect.moveTo(x, y); + painter.fillRect(rect, color); + painter.setPen(color.darker()); + painter.drawText(rect, Qt::AlignCenter, QString::number(intensity)); + } +} +//! [6] + +//! [7] +int VibrationSurface::getIntensity(int x, int y) +{ + int level; + int coord; + + if (height() > width()) { + level = height() / NumberOfLevels; + coord = y; + } else { + level = width() / NumberOfLevels; + coord = x; + } + + if (level == 0) { + return 0; + } +//! [7] +//! [8] + int intensity = (coord / level + 1) * IntensityFactor; + + if (intensity < 0) { + intensity = 0; + } else if (intensity > XQVibra::MaxIntensity) { + intensity = XQVibra::MaxIntensity; + } + + return intensity; +} +//! [8] + +//! [3] +void VibrationSurface::applyIntensity(int x, int y) +{ + int intensity = getIntensity(x, y); + + if (intensity != lastIntensity) { + vibra->setIntensity(intensity); + lastIntensity = intensity; + } +} +//! [3] + |