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Diffstat (limited to 'qt-ui/qtwaitingspinner.cpp')
| -rw-r--r-- | qt-ui/qtwaitingspinner.cpp | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/qt-ui/qtwaitingspinner.cpp b/qt-ui/qtwaitingspinner.cpp deleted file mode 100644 index 14e8669b0..000000000 --- a/qt-ui/qtwaitingspinner.cpp +++ /dev/null @@ -1,288 +0,0 @@ - -/* Original Work Copyright (c) 2012-2014 Alexander Turkin - Modified 2014 by William Hallatt - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of -the Software, and to permit persons to whom the Software is furnished to do so, -subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS -FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR -COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER -IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -*/ -#include <cmath> -#include <algorithm> - -#include <QPainter> -#include <QTimer> - -#include "qtwaitingspinner.h" - -/*----------------------------------------------------------------------------*/ - -// Defaults -const QColor c_color(Qt::black); -const qreal c_roundness(70.0); -const qreal c_minTrailOpacity(15.0); -const qreal c_trailFadePercentage(70.0); -const int c_lines(12); -const int c_lineLength(10); -const int c_lineWidth(5); -const int c_innerRadius(10); -const int c_revPerSec(1); - -/*----------------------------------------------------------------------------*/ - -QtWaitingSpinner::QtWaitingSpinner(QWidget *parent) - : QWidget(parent), - - // Configurable settings. - m_color(c_color), m_roundness(c_roundness), - m_minTrailOpacity(c_minTrailOpacity), - m_trailFadePercentage(c_trailFadePercentage), m_revPerSec(c_revPerSec), - m_numberOfLines(c_lines), m_lineLength(c_lineLength + c_lineWidth), - m_lineWidth(c_lineWidth), m_innerRadius(c_innerRadius), - - // Other - m_timer(NULL), m_parent(parent), m_centreOnParent(false), - m_currentCounter(0), m_isSpinning(false) { - initialise(); -} - -/*----------------------------------------------------------------------------*/ - -QtWaitingSpinner::QtWaitingSpinner(Qt::WindowModality modality, QWidget *parent, - bool centreOnParent) - : QWidget(parent, Qt::Dialog | Qt::FramelessWindowHint), - - // Configurable settings. - m_color(c_color), m_roundness(c_roundness), - m_minTrailOpacity(c_minTrailOpacity), - m_trailFadePercentage(c_trailFadePercentage), m_revPerSec(c_revPerSec), - m_numberOfLines(c_lines), m_lineLength(c_lineLength + c_lineWidth), - m_lineWidth(c_lineWidth), m_innerRadius(c_innerRadius), - - // Other - m_timer(NULL), m_parent(parent), m_centreOnParent(centreOnParent), - m_currentCounter(0) { - initialise(); - - // We need to set the window modality AFTER we've hidden the - // widget for the first time since changing this property while - // the widget is visible has no effect. - this->setWindowModality(modality); - this->setAttribute(Qt::WA_TranslucentBackground); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::initialise() { - m_timer = new QTimer(this); - connect(m_timer, SIGNAL(timeout()), this, SLOT(rotate())); - updateSize(); - updateTimer(); - this->hide(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::paintEvent(QPaintEvent * /*ev*/) { - QPainter painter(this); - painter.fillRect(this->rect(), Qt::transparent); - painter.setRenderHint(QPainter::Antialiasing, true); - - if (m_currentCounter >= m_numberOfLines) { - m_currentCounter = 0; - } - painter.setPen(Qt::NoPen); - for (int i = 0; i < m_numberOfLines; ++i) { - painter.save(); - painter.translate(m_innerRadius + m_lineLength, - m_innerRadius + m_lineLength); - qreal rotateAngle = - static_cast<qreal>(360 * i) / static_cast<qreal>(m_numberOfLines); - painter.rotate(rotateAngle); - painter.translate(m_innerRadius, 0); - int distance = - lineCountDistanceFromPrimary(i, m_currentCounter, m_numberOfLines); - QColor color = - currentLineColor(distance, m_numberOfLines, m_trailFadePercentage, - m_minTrailOpacity, m_color); - painter.setBrush(color); - // TODO improve the way rounded rect is painted - painter.drawRoundedRect( - QRect(0, -m_lineWidth / 2, m_lineLength, m_lineWidth), m_roundness, - m_roundness, Qt::RelativeSize); - painter.restore(); - } -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::start() { - updatePosition(); - m_isSpinning = true; - this->show(); - if (!m_timer->isActive()) { - m_timer->start(); - m_currentCounter = 0; - } -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::stop() { - m_isSpinning = false; - this->hide(); - if (m_timer->isActive()) { - m_timer->stop(); - m_currentCounter = 0; - } -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setNumberOfLines(int lines) { - m_numberOfLines = lines; - m_currentCounter = 0; - updateTimer(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setLineLength(int length) { - m_lineLength = length; - updateSize(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setLineWidth(int width) { - m_lineWidth = width; - updateSize(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setInnerRadius(int radius) { - m_innerRadius = radius; - updateSize(); -} - -/*----------------------------------------------------------------------------*/ - -bool QtWaitingSpinner::isSpinning() const { return m_isSpinning; } - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setRoundness(qreal roundness) { - m_roundness = std::max(0.0, std::min(100.0, roundness)); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setColor(QColor color) { m_color = color; } - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setRevolutionsPerSecond(int rps) { - m_revPerSec = rps; - updateTimer(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setTrailFadePercentage(qreal trail) { - m_trailFadePercentage = trail; -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::setMinimumTrailOpacity(qreal minOpacity) { - m_minTrailOpacity = minOpacity; -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::rotate() { - ++m_currentCounter; - if (m_currentCounter >= m_numberOfLines) { - m_currentCounter = 0; - } - update(); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::updateSize() { - int size = (m_innerRadius + m_lineLength) * 2; - setFixedSize(size, size); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::updateTimer() { - m_timer->setInterval(calculateTimerInterval(m_numberOfLines, m_revPerSec)); -} - -/*----------------------------------------------------------------------------*/ - -void QtWaitingSpinner::updatePosition() { - if (m_parent && m_centreOnParent) { - this->move(m_parent->frameGeometry().topLeft() + m_parent->rect().center() - - this->rect().center()); - } -} - -/*----------------------------------------------------------------------------*/ - -int QtWaitingSpinner::calculateTimerInterval(int lines, int speed) { - return 1000 / (lines * speed); -} - -/*----------------------------------------------------------------------------*/ - -int QtWaitingSpinner::lineCountDistanceFromPrimary(int current, int primary, - int totalNrOfLines) { - int distance = primary - current; - if (distance < 0) { - distance += totalNrOfLines; - } - return distance; -} - -/*----------------------------------------------------------------------------*/ - -QColor QtWaitingSpinner::currentLineColor(int countDistance, int totalNrOfLines, - qreal trailFadePerc, qreal minOpacity, - QColor color) { - if (countDistance == 0) { - return color; - } - const qreal minAlphaF = minOpacity / 100.0; - int distanceThreshold = - static_cast<int>(ceil((totalNrOfLines - 1) * trailFadePerc / 100.0)); - if (countDistance > distanceThreshold) { - color.setAlphaF(minAlphaF); - } else { - qreal alphaDiff = color.alphaF() - minAlphaF; - qreal gradient = alphaDiff / static_cast<qreal>(distanceThreshold + 1); - qreal resultAlpha = color.alphaF() - gradient * countDistance; - - // If alpha is out of bounds, clip it. - resultAlpha = std::min(1.0, std::max(0.0, resultAlpha)); - color.setAlphaF(resultAlpha); - } - return color; -} - -/*----------------------------------------------------------------------------*/ |