void Draw::brushChanged()
{
Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData(
brushStyleComboBox->currentIndex(), IdRole).toInt());
if (style == Qt::LinearGradientPattern) {
QLinearGradient linearGradient(0, 0, 100, 100);
linearGradient.setColorAt(0.0, Qt::white);
linearGradient.setColorAt(0.2, Qt::green);
linearGradient.setColorAt(1.0, Qt::black);
m_renderArea->setBrush(linearGradient);
} else if (style == Qt::RadialGradientPattern) {
QRadialGradient radialGradient(50, 50, 50, 70, 70);
radialGradient.setColorAt(0.0, Qt::white);
radialGradient.setColorAt(0.2, Qt::green);
radialGradient.setColorAt(1.0, Qt::black);
m_renderArea->setBrush(radialGradient);
} else if (style == Qt::ConicalGradientPattern) {
QConicalGradient conicalGradient(50, 50, 150);
conicalGradient.setColorAt(0.0, Qt::white);
conicalGradient.setColorAt(0.2, Qt::green);
conicalGradient.setColorAt(1.0, Qt::black);
m_renderArea->setBrush(conicalGradient);
} else if (style == Qt::TexturePattern) {
m_renderArea->setBrush(QBrush(QPixmap(":/resources/brick.png")));
} else {
m_renderArea->setBrush(QBrush(Qt::green, style));
}
}
//main display loop, this function will be called again and again by OpenGL
void display()
{
//Misc.
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
radialGradient(WIDTH/2, HEIGHT/2, sqrt(2)*WIDTH/2);
setColor(0, 0, 1);
flower(100, 100, 100, 10);
setColor(0, 0, 0);
for (int i = 0; i < 4; i++) {
bresenhamLine(D[i * 2], D[i * 2 + 1], D[i * 2 + 2], D[i * 2 + 3]);
}
for (int i = 0; i < 5; i++) {
bresenhamLine(F[i * 2], F[i * 2 + 1], F[i * 2 + 2], F[i * 2 + 3]);
}
//draws pixel on screen, width and height must match pixel buffer dimension
glDrawPixels(WIDTH, HEIGHT, GL_RGB, GL_FLOAT, PixelBuffer);
//window refresh
glFlush();
}
void QvkAnimateWindow::paintEvent( QPaintEvent *event )
{
(void)event;
QPainter painter( this );
painter.setRenderHints( QPainter::Antialiasing, true );
QBrush brush;
if ( radiant == false )
{
brush.setStyle( Qt::SolidPattern );
brush.setColor( color );
}
else
{
QRadialGradient radialGradient( width()/2, height()/2, diameter/2 );
radialGradient.setColorAt( 0, color );
radialGradient.setColorAt( 1, Qt::transparent );
QBrush brushRadial( radialGradient );
brush.swap( brushRadial );
}
painter.setPen( Qt::NoPen );
painter.setBrush( brush );
painter.setOpacity ( opacity );
painter.drawEllipse ( QPoint( width()/2, height()/2 ), diameter/2, diameter/2 );
}
void PlayerMarker::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
painter->setRenderHint(QPainter::Antialiasing);
QRadialGradient radialGradient(QPointF(0,0), radius_);
radialGradient.setColorAt(0, Qt::white);
radialGradient.setColorAt(1, color_);
painter->setBrush(QBrush(radialGradient));
painter->setPen(color_);
painter->drawEllipse(QPointF(0,0), radius_, radius_);
}
QBrush UBGraphicsProtractor::fillBrush() const
{
QColor fillColor = edgeFillColor();// scene()->isDarkBackground() ? sDarkBackgroundFillColor : sFillColor;
QColor fillColorCenter = middleFillColor();//scene()->isDarkBackground() ? sDarkBackgroundFillColorCenter : sFillColorCenter;
QColor transparentWhite = Qt::white;
transparentWhite.setAlpha(scene()->isDarkBackground() ? sDrawTransparency : sFillTransparency);
QRadialGradient radialGradient(rect().center(), radius(), rect().center());
radialGradient.setColorAt(0, fillColorCenter);
radialGradient.setColorAt(1, fillColor);
return radialGradient;
}
void Widget::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
/* 1. 绘制线条 */
painter.drawLine(QPoint(0, 0), QPoint(100, 100));
/* 创建画笔 */
/* 画刷 线宽 画笔风格 画笔端点风格 画笔连接风格 */
QPen pen(Qt::green, 5, Qt::DotLine, Qt::RoundCap, Qt::RoundJoin);
//使用画笔
painter.setPen(pen);
QRectF rectangle(70.0, 40.0, 80.0, 60.0);
int startAngle = 30 * 16; /* 实际角度值 x 16*/
int spanAngle = 120 * 16;
/* 2. 绘制圆弧 */
painter.drawArc(rectangle, startAngle, spanAngle);
//重新设置画笔
pen.setWidth(1);
pen.setStyle(Qt::SolidLine);
painter.setPen(pen);
/* 3. 绘制一个矩形 */
painter.drawRect(160, 20, 50, 40);
//重新设置画笔
pen.setColor(QColor(255,0,0));
painter.setPen(pen);
//创建画刷
QBrush brush(QColor(0, 0, 255), Qt::Dense4Pattern);
//使用画刷
painter.setBrush(brush);
/* 4. 绘制椭圆 */
painter.drawEllipse(220, 20, 60, 40);
//设置纹理
brush.setTexture(QPixmap("../myDrawing/yafeilinux.png"));
//重新使用画刷
painter.setBrush(brush);
//定义四个点
static const QPointF points[4] = {
QPointF(270.0, 80.0),
QPointF(290.0, 10.0),
QPointF(350.0, 30.0),
QPointF(390.0, 70.0)
};
/* 5. 使用四个点绘制多边形 */
painter.drawPolygon(points, 4);
/* 6 使用画刷填充一个矩形区域 */
painter.fillRect(QRect(10, 100, 150, 20), QBrush(Qt::darkYellow));
//擦除一个矩形区域的内容
painter.eraseRect(QRect(50, 0, 50, 120));
/*线性渐变*/
QLinearGradient linearGradient(QPointF(40, 190), QPointF(70, 190)); // 线性渐变
/*插入颜色*/
linearGradient.setColorAt(0, Qt::yellow);
linearGradient.setColorAt(0.5, Qt::red);
linearGradient.setColorAt(1, Qt::green);
/*指定渐变区域以外的区域的扩散方式*/
linearGradient.setSpread(QGradient::RepeatSpread); // 重复渐变
// linearGradient.setSpread(QGradient::PadSpread); // 使用最近使用的颜色进行填充 默认值
// linearGradient.setSpread(QGradient::ReflectSpread); // 反射渐变
/*使用渐变作为画刷*/
painter.setBrush(linearGradient);
/* 7 绘制线性渐变*/
painter.drawRect(10, 170, 90, 40);
/* 8 辐射渐变*/
QRadialGradient radialGradient(QPointF(200, 190), 50, QPointF(275, 200));
radialGradient.setColorAt(0, QColor(255, 255, 100, 150));
radialGradient.setColorAt(1, QColor(0, 0, 0, 50));
painter.setBrush(radialGradient);
painter.drawEllipse(QPointF(200, 190), 50, 50);
/* 9 锥形渐变 */
QConicalGradient conicalGradient(QPointF(350, 190), 60);
conicalGradient.setColorAt(0.2, Qt::cyan);
conicalGradient.setColorAt(0.5, Qt::blue);
conicalGradient.setColorAt(0.9, Qt::black);
painter.setBrush(conicalGradient);
painter.drawEllipse(QPointF(350, 190), 50, 50);
/* 10 画笔使用线性渐变来绘制直线和文字 */
painter.setPen(QPen(linearGradient,2));
painter.drawLine(0, 280, 100, 280);
painter.drawText(150, 280, tr("helloQt!"));
}
void Widget::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
//绘制线条
painter.drawLine(QPoint(0, 0), QPoint(100, 100));
//创建画笔
QPen pen(Qt::green, 5, Qt::DotLine, Qt::RoundCap, Qt::RoundJoin);
//使用画笔
painter.setPen(pen);
QRectF rectangle(70.0, 40.0, 80.0, 60.0);
int startAngle = 30 * 16;
int spanAngle = 120 * 16;
//绘制圆弧
painter.drawArc(rectangle, startAngle, spanAngle);
//重新设置画笔
pen.setWidth(1);
pen.setStyle(Qt::SolidLine);
painter.setPen(pen);
//绘制一个矩形
painter.drawRect(160, 20, 50, 40);
//创建画刷
QBrush brush(QColor(0, 0, 255), Qt::Dense4Pattern);
//使用画刷
painter.setBrush(brush);
//绘制椭圆
painter.drawEllipse(220, 20, 50, 50);
//设置纹理
brush.setTexture(QPixmap("../myDrawing/yafeilinux.png"));
//重新使用画刷
painter.setBrush(brush);
//定义四个点
static const QPointF points[4] = {
QPointF(270.0, 80.0),
QPointF(290.0, 10.0),
QPointF(350.0, 30.0),
QPointF(390.0, 70.0)
};
//使用四个点绘制多边形
painter.drawPolygon(points, 4);
//使用画刷填充一个矩形区域
painter.fillRect(QRect(10, 100, 150, 20), QBrush(Qt::darkYellow));
//擦除一个矩形区域的内容
painter.eraseRect(QRect(50, 0, 50, 120));
//线性渐变
QLinearGradient linearGradient(QPointF(40, 190), QPointF(70, 190));
//插入颜色
linearGradient.setColorAt(0, Qt::yellow);
linearGradient.setColorAt(0.5, Qt::red);
linearGradient.setColorAt(1, Qt::green);
//指定渐变区域以外的区域的扩散方式
linearGradient.setSpread(QGradient::RepeatSpread);
//使用渐变作为画刷
painter.setBrush(linearGradient);
painter.drawRect(10, 170, 90, 40);
//辐射渐变
QRadialGradient radialGradient(QPointF(200, 190), 50, QPointF(275, 200));
radialGradient.setColorAt(0, QColor(255, 255, 100, 150));
radialGradient.setColorAt(1, QColor(0, 0, 0, 50));
painter.setBrush(radialGradient);
painter.drawEllipse(QPointF(200, 190), 50, 50);
//锥形渐变
QConicalGradient conicalGradient(QPointF(350, 190), 60);
conicalGradient.setColorAt(0.2, Qt::cyan);
conicalGradient.setColorAt(0.9, Qt::black);
painter.setBrush(conicalGradient);
painter.drawEllipse(QPointF(350, 190), 50, 50);
//画笔使用线性渐变来绘制直线和文字
painter.setPen(QPen(linearGradient,2));
painter.drawLine(0, 280, 100, 280);
painter.drawText(150, 280, tr("helloQt!"));
}
void QScreenDistribution::paintEvent(QPaintEvent *event)
{
m_screens.clear();
// Calcul de les posicions on s'haurà de pintar les diferents icones de finestres.
computeSizesAndPositions();
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
QPen pen = QPen(Qt::white, 2, Qt::SolidLine);
painter.setPen(pen);
QFont font;
font.setPixelSize(m_screenNumberPixelSize);
painter.setFont(font);
for (int i = 0; i < m_screens.count(); i++)
{
if (m_mouseInScreen == i)
{
QLinearGradient linearGradient(0.1, 0.1, 1.2, 1.2);
linearGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
linearGradient.setColorAt(0, QColor("#777777"));
linearGradient.setColorAt(1, QColor("#111111"));
painter.setBrush(QBrush(linearGradient));
painter.drawRoundedRect(m_screens.at(i), 2, 2);
QRadialGradient radialGradient(0.9, 2.1, 2.5);
radialGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
radialGradient.setColorAt(0, QColor(255, 255, 255, 0));
radialGradient.setColorAt(0.74, QColor(255, 255, 255, 0));
radialGradient.setColorAt(0.75, QColor(255, 255, 255, 40));
radialGradient.setColorAt(1, QColor(255, 255, 255, 0));
painter.setBrush(QBrush(radialGradient));
painter.drawRoundedRect(m_screens.at(i), 2, 2);
}
else
{
painter.setPen(Qt::NoPen);
QLinearGradient linearGradient(0.1, 0.1, 1.2, 1.2);
linearGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
linearGradient.setColorAt(0, QColor("#666666"));
linearGradient.setColorAt(1, QColor("#000000"));
painter.setBrush(QBrush(linearGradient));
painter.drawRoundedRect(m_screens.at(i), 2, 2);
QRadialGradient radialGradient(0.9, 2.1, 2.5);
radialGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
radialGradient.setColorAt(0, QColor(255, 255, 255, 0));
radialGradient.setColorAt(0.74, QColor(255, 255, 255, 0));
radialGradient.setColorAt(0.75, QColor(255, 255, 255, 40));
radialGradient.setColorAt(1, QColor(255, 255, 255, 0));
painter.setBrush(QBrush(radialGradient));
painter.drawRoundedRect(m_screens.at(i), 2, 2);
painter.setPen(pen);
}
// Pintar el numero
painter.drawText(m_screens.at(i), Qt::AlignCenter, QString::number(i + 1));
}
event->accept();
}
void SvgElementVisitor::visit(clan::DomElement &e)
{
if (e.get_namespace_uri() != Svg::svg_ns) return;
// To do: do a more efficient search for the correct handler
auto local_name = e.get_local_name();
if (local_name == "a") a(e);
else if (local_name == "altGlyph") altGlyph(e);
else if (local_name == "altGlyphDef") altGlyphDef(e);
else if (local_name == "altGlyphItem") altGlyphItem(e);
else if (local_name == "animate") animate(e);
else if (local_name == "animateColor") animateColor(e);
else if (local_name == "animateMotion") animateMotion(e);
else if (local_name == "animateTransform") animateTransform(e);
else if (local_name == "circle") circle(e);
else if (local_name == "clipPath") clipPath(e);
else if (local_name == "color-profile") color_profile(e);
else if (local_name == "cursor") cursor(e);
else if (local_name == "defs") defs(e);
else if (local_name == "desc") desc(e);
else if (local_name == "ellipse") ellipse(e);
else if (local_name == "feBlend") feBlend(e);
else if (local_name == "feColorMatrix") feColorMatrix(e);
else if (local_name == "feComponentTransfer") feComponentTransfer(e);
else if (local_name == "feComposite") feComposite(e);
else if (local_name == "feConvolveMatrix") feConvolveMatrix(e);
else if (local_name == "feDiffuseLighting") feDiffuseLighting(e);
else if (local_name == "feDisplacementMap") feDisplacementMap(e);
else if (local_name == "feDistantLight") feDistantLight(e);
else if (local_name == "feFlood") feFlood(e);
else if (local_name == "feFuncA") feFuncA(e);
else if (local_name == "feFuncB") feFuncB(e);
else if (local_name == "feFuncG") feFuncG(e);
else if (local_name == "feFuncR") feFuncR(e);
else if (local_name == "feGaussianBlur") feGaussianBlur(e);
else if (local_name == "feImage") feImage(e);
else if (local_name == "feMerge") feMerge(e);
else if (local_name == "feMergeNode") feMergeNode(e);
else if (local_name == "feMorphology") feMorphology(e);
else if (local_name == "feOffset") feOffset(e);
else if (local_name == "fePointLight") fePointLight(e);
else if (local_name == "feSpecularLighting") feSpecularLighting(e);
else if (local_name == "feSpotLight") feSpotLight(e);
else if (local_name == "feTile") feTile(e);
else if (local_name == "feTurbulence") feTurbulence(e);
else if (local_name == "filter") filter(e);
else if (local_name == "font") font(e);
else if (local_name == "font-face") font_face(e);
else if (local_name == "font-face-format") font_face_format(e);
else if (local_name == "font-face-name") font_face_name(e);
else if (local_name == "font-face-src") font_face_src(e);
else if (local_name == "font-face-uri") font_face_uri(e);
else if (local_name == "foreignObject") foreignObject(e);
else if (local_name == "g") g(e);
else if (local_name == "glyph") glyph(e);
else if (local_name == "glyphRef") glyphRef(e);
else if (local_name == "hkern") hkern(e);
else if (local_name == "image") image(e);
else if (local_name == "line") line(e);
else if (local_name == "linearGradient") linearGradient(e);
else if (local_name == "marker") marker(e);
else if (local_name == "mask") mask(e);
else if (local_name == "metadata") metadata(e);
else if (local_name == "missing-glyph") missing_glyph(e);
else if (local_name == "mpath") mpath(e);
else if (local_name == "path") path(e);
else if (local_name == "pattern") pattern(e);
else if (local_name == "polygon") polygon(e);
else if (local_name == "polyline") polyline(e);
else if (local_name == "radialGradient") radialGradient(e);
else if (local_name == "rect") rect(e);
else if (local_name == "script") script(e);
else if (local_name == "set") set(e);
else if (local_name == "stop") stop(e);
else if (local_name == "style") style(e);
else if (local_name == "svg") svg(e);
else if (local_name == "switch") switch_(e);
else if (local_name == "symbol") symbol(e);
else if (local_name == "text") text(e);
else if (local_name == "textPath") textPath(e);
else if (local_name == "title") title(e);
else if (local_name == "tref") tref(e);
else if (local_name == "tspan") tspan(e);
else if (local_name == "use") use(e);
else if (local_name == "view") view(e);
else if (local_name == "vkern") vkern(e);
}
