qt_demoe/lightbutton/lightbutton.cpp

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2019-09-28 14:25:53 +00:00
#pragma execution_character_set("utf-8")
#include "lightbutton.h"
#include "qpainter.h"
#include "qevent.h"
#include "qtimer.h"
#include "qdebug.h"
LightButton::LightButton(QWidget *parent) : QWidget(parent)
{
text = "";
textColor = QColor(255, 255, 255);
alarmColor = QColor(255, 107, 107);
normalColor = QColor(10, 10, 10);
borderOutColorStart = QColor(255, 255, 255);
borderOutColorEnd = QColor(166, 166, 166);
borderInColorStart = QColor(166, 166, 166);
borderInColorEnd = QColor(255, 255, 255);
bgColor = QColor(100, 184, 255);
showRect = false;
showOverlay = true;
overlayColor = QColor(255, 255, 255);
canMove = false;
this->installEventFilter(this);
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isAlarm = false;
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timerAlarm = new QTimer(this);
connect(timerAlarm, SIGNAL(timeout()), this, SLOT(alarm()));
timerAlarm->setInterval(500);
//setFont(QFont("Arial", 8));
}
bool LightButton::eventFilter(QObject *watched, QEvent *event)
{
if (canMove) {
static QPoint lastPoint;
static bool pressed = false;
QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
if (mouseEvent->type() == QEvent::MouseButtonPress) {
if (this->rect().contains(mouseEvent->pos()) && (mouseEvent->button() == Qt::LeftButton)) {
lastPoint = mouseEvent->pos();
pressed = true;
}
} else if (mouseEvent->type() == QEvent::MouseMove && pressed) {
int dx = mouseEvent->pos().x() - lastPoint.x();
int dy = mouseEvent->pos().y() - lastPoint.y();
this->move(this->x() + dx, this->y() + dy);
} else if (mouseEvent->type() == QEvent::MouseButtonRelease && pressed) {
pressed = false;
}
}
return QWidget::eventFilter(watched, event);
}
void LightButton::paintEvent(QPaintEvent *)
{
int width = this->width();
int height = this->height();
int side = qMin(width, height);
//绘制准备工作,启用反锯齿,平移坐标轴中心,等比例缩放
QPainter painter(this);
painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
if (showRect) {
//绘制矩形区域
painter.setPen(Qt::NoPen);
painter.setBrush(bgColor);
painter.drawRoundedRect(this->rect(), 5, 5);
//绘制文字
if (!text.isEmpty()) {
QFont font;
font.setPixelSize(side - 20);
painter.setFont(font);
painter.setPen(textColor);
painter.drawText(this->rect(), Qt::AlignCenter, text);
}
} else {
painter.translate(width / 2, height / 2);
painter.scale(side / 200.0, side / 200.0);
//绘制外边框
drawBorderOut(&painter);
//绘制内边框
drawBorderIn(&painter);
//绘制内部指示颜色
drawBg(&painter);
//绘制居中文字
drawText(&painter);
//绘制遮罩层
drawOverlay(&painter);
}
}
void LightButton::drawBorderOut(QPainter *painter)
{
int radius = 99;
painter->save();
painter->setPen(Qt::NoPen);
QLinearGradient borderGradient(0, -radius, 0, radius);
borderGradient.setColorAt(0, borderOutColorStart);
borderGradient.setColorAt(1, borderOutColorEnd);
painter->setBrush(borderGradient);
painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);
painter->restore();
}
void LightButton::drawBorderIn(QPainter *painter)
{
int radius = 90;
painter->save();
painter->setPen(Qt::NoPen);
QLinearGradient borderGradient(0, -radius, 0, radius);
borderGradient.setColorAt(0, borderInColorStart);
borderGradient.setColorAt(1, borderInColorEnd);
painter->setBrush(borderGradient);
painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);
painter->restore();
}
void LightButton::drawBg(QPainter *painter)
{
int radius = 80;
painter->save();
painter->setPen(Qt::NoPen);
painter->setBrush(bgColor);
painter->drawEllipse(-radius, -radius, radius * 2, radius * 2);
painter->restore();
}
void LightButton::drawText(QPainter *painter)
{
if (text.isEmpty()) {
return;
}
int radius = 100;
painter->save();
QFont font;
font.setPixelSize(85);
painter->setFont(font);
painter->setPen(textColor);
QRect rect(-radius, -radius, radius * 2, radius * 2);
painter->drawText(rect, Qt::AlignCenter, text);
painter->restore();
}
void LightButton::drawOverlay(QPainter *painter)
{
if (!showOverlay) {
return;
}
int radius = 80;
painter->save();
painter->setPen(Qt::NoPen);
QPainterPath smallCircle;
QPainterPath bigCircle;
radius -= 1;
smallCircle.addEllipse(-radius, -radius, radius * 2, radius * 2);
radius *= 2;
bigCircle.addEllipse(-radius, -radius + 140, radius * 2, radius * 2);
//高光的形状为小圆扣掉大圆的部分
QPainterPath highlight = smallCircle - bigCircle;
QLinearGradient linearGradient(0, -radius / 2, 0, 0);
overlayColor.setAlpha(100);
linearGradient.setColorAt(0.0, overlayColor);
overlayColor.setAlpha(30);
linearGradient.setColorAt(1.0, overlayColor);
painter->setBrush(linearGradient);
painter->rotate(-20);
painter->drawPath(highlight);
painter->restore();
}
QString LightButton::getText() const
{
return this->text;
}
QColor LightButton::getTextColor() const
{
return this->textColor;
}
QColor LightButton::getAlarmColor() const
{
return this->alarmColor;
}
QColor LightButton::getNormalColor() const
{
return this->normalColor;
}
QColor LightButton::getBorderOutColorStart() const
{
return this->borderOutColorStart;
}
QColor LightButton::getBorderOutColorEnd() const
{
return this->borderOutColorEnd;
}
QColor LightButton::getBorderInColorStart() const
{
return this->borderInColorStart;
}
QColor LightButton::getBorderInColorEnd() const
{
return this->borderInColorEnd;
}
QColor LightButton::getBgColor() const
{
return this->bgColor;
}
bool LightButton::getCanMove() const
{
return this->canMove;
}
bool LightButton::getShowRect() const
{
return this->showRect;
}
bool LightButton::getShowOverlay() const
{
return this->showOverlay;
}
QColor LightButton::getOverlayColor() const
{
return this->overlayColor;
}
QSize LightButton::sizeHint() const
{
return QSize(100, 100);
}
QSize LightButton::minimumSizeHint() const
{
return QSize(10, 10);
}
void LightButton::setText(const QString &text)
{
if (this->text != text) {
this->text = text;
this->update();
}
}
void LightButton::setTextColor(const QColor &textColor)
{
if (this->textColor != textColor) {
this->textColor = textColor;
this->update();
}
}
void LightButton::setAlarmColor(const QColor &alarmColor)
{
if (this->alarmColor != alarmColor) {
this->alarmColor = alarmColor;
this->update();
}
}
void LightButton::setNormalColor(const QColor &normalColor)
{
if (this->normalColor != normalColor) {
this->normalColor = normalColor;
this->update();
}
}
void LightButton::setBorderOutColorStart(const QColor &borderOutColorStart)
{
if (this->borderOutColorStart != borderOutColorStart) {
this->borderOutColorStart = borderOutColorStart;
this->update();
}
}
void LightButton::setBorderOutColorEnd(const QColor &borderOutColorEnd)
{
if (this->borderOutColorEnd != borderOutColorEnd) {
this->borderOutColorEnd = borderOutColorEnd;
this->update();
}
}
void LightButton::setBorderInColorStart(const QColor &borderInColorStart)
{
if (this->borderInColorStart != borderInColorStart) {
this->borderInColorStart = borderInColorStart;
this->update();
}
}
void LightButton::setBorderInColorEnd(const QColor &borderInColorEnd)
{
if (this->borderInColorEnd != borderInColorEnd) {
this->borderInColorEnd = borderInColorEnd;
this->update();
}
}
void LightButton::setBgColor(const QColor &bgColor)
{
if (this->bgColor != bgColor) {
this->bgColor = bgColor;
this->update();
}
}
void LightButton::setCanMove(bool canMove)
{
if (this->canMove != canMove) {
this->canMove = canMove;
this->update();
}
}
void LightButton::setShowRect(bool showRect)
{
if (this->showRect != showRect) {
this->showRect = showRect;
this->update();
}
}
void LightButton::setShowOverlay(bool showOverlay)
{
if (this->showOverlay != showOverlay) {
this->showOverlay = showOverlay;
this->update();
}
}
void LightButton::setOverlayColor(const QColor &overlayColor)
{
if (this->overlayColor != overlayColor) {
this->overlayColor = overlayColor;
this->update();
}
}
void LightButton::setGreen()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(0, 166, 0));
}
void LightButton::setRed()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(255, 0, 0));
}
void LightButton::setYellow()
{
textColor = QColor(25, 50, 7);
setBgColor(QColor(238, 238, 0));
}
void LightButton::setBlack()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(10, 10, 10));
}
void LightButton::setGray()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(129, 129, 129));
}
void LightButton::setBlue()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(0, 0, 166));
}
void LightButton::setLightBlue()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(100, 184, 255));
}
void LightButton::setLightRed()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(255, 107, 107));
}
void LightButton::setLightGreen()
{
textColor = QColor(255, 255, 255);
setBgColor(QColor(24, 189, 155));
}
void LightButton::startAlarm()
{
if (!timerAlarm->isActive()) {
timerAlarm->start();
}
}
void LightButton::stopAlarm()
{
if (timerAlarm->isActive()) {
timerAlarm->stop();
}
}
void LightButton::alarm()
{
if (isAlarm) {
textColor = QColor(255, 255, 255);
bgColor = normalColor;
} else {
textColor = QColor(255, 255, 255);
bgColor = alarmColor;
}
this->update();
isAlarm = !isAlarm;
}