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Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativerectangle.cpp')
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diff --git a/src/declarative/graphicsitems/qdeclarativerectangle.cpp b/src/declarative/graphicsitems/qdeclarativerectangle.cpp deleted file mode 100644 index 18f11f3e38..0000000000 --- a/src/declarative/graphicsitems/qdeclarativerectangle.cpp +++ /dev/null @@ -1,587 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "private/qdeclarativerectangle_p.h" -#include "private/qdeclarativerectangle_p_p.h" - -#include <QPainter> -#include <QStringBuilder> -#include <QtCore/qmath.h> - -QT_BEGIN_NAMESPACE - -/*! - \internal - \class QDeclarativePen - \brief The QDeclarativePen class provides a pen used for drawing rectangle borders on a QDeclarativeView. - - By default, the pen is invalid and nothing is drawn. You must either set a color (then the default - width is 1) or a width (then the default color is black). - - A width of 1 indicates is a single-pixel line on the border of the item being painted. - - Example: - \qml - Rectangle { - border.width: 2 - border.color: "red" - } - \endqml -*/ - -void QDeclarativePen::setColor(const QColor &c) -{ - _color = c; - _valid = (_color.alpha() && _width >= 1) ? true : false; - emit penChanged(); -} - -void QDeclarativePen::setWidth(int w) -{ - if (_width == w && _valid) - return; - - _width = w; - _valid = (_color.alpha() && _width >= 1) ? true : false; - emit penChanged(); -} - - -/*! - \qmlclass GradientStop QDeclarativeGradientStop - \ingroup qml-basic-visual-elements - \since 4.7 - \brief The GradientStop item defines the color at a position in a Gradient. - - \sa Gradient -*/ - -/*! - \qmlproperty real GradientStop::position - \qmlproperty color GradientStop::color - - The position and color properties describe the color used at a given - position in a gradient, as represented by a gradient stop. - - The default position is 0.0; the default color is black. - - \sa Gradient -*/ - -void QDeclarativeGradientStop::updateGradient() -{ - if (QDeclarativeGradient *grad = qobject_cast<QDeclarativeGradient*>(parent())) - grad->doUpdate(); -} - -/*! - \qmlclass Gradient QDeclarativeGradient - \ingroup qml-basic-visual-elements - \since 4.7 - \brief The Gradient item defines a gradient fill. - - A gradient is defined by two or more colors, which will be blended seamlessly. - - The colors are specified as a set of GradientStop child items, each of - which defines a position on the gradient from 0.0 to 1.0 and a color. - The position of each GradientStop is defined by setting its - \l{GradientStop::}{position} property; its color is defined using its - \l{GradientStop::}{color} property. - - A gradient without any gradient stops is rendered as a solid white fill. - - Note that this item is not a visual representation of a gradient. To display a - gradient, use a visual element (like \l Rectangle) which supports the use - of gradients. - - \section1 Example Usage - - \div {class="float-right"} - \inlineimage qml-gradient.png - \enddiv - - The following example declares a \l Rectangle item with a gradient starting - with red, blending to yellow at one third of the height of the rectangle, - and ending with green: - - \snippet doc/src/snippets/declarative/gradient.qml code - - \clearfloat - \section1 Performance and Limitations - - Calculating gradients can be computationally expensive compared to the use - of solid color fills or images. Consider using gradients for static items - in a user interface. - - In Qt 4.7, only vertical, linear gradients can be applied to items. If you - need to apply different orientations of gradients, a combination of rotation - and clipping will need to be applied to the relevant items. This can - introduce additional performance requirements for your application. - - The use of animations involving gradient stops may not give the desired - result. An alternative way to animate gradients is to use pre-generated - images or SVG drawings containing gradients. - - \sa GradientStop -*/ - -/*! - \qmlproperty list<GradientStop> Gradient::stops - This property holds the gradient stops describing the gradient. - - By default, this property contains an empty list. - - To set the gradient stops, define them as children of the Gradient element. -*/ - -const QGradient *QDeclarativeGradient::gradient() const -{ - if (!m_gradient && !m_stops.isEmpty()) { - m_gradient = new QLinearGradient(0,0,0,1.0); - for (int i = 0; i < m_stops.count(); ++i) { - const QDeclarativeGradientStop *stop = m_stops.at(i); - m_gradient->setCoordinateMode(QGradient::ObjectBoundingMode); - m_gradient->setColorAt(stop->position(), stop->color()); - } - } - - return m_gradient; -} - -void QDeclarativeGradient::doUpdate() -{ - delete m_gradient; - m_gradient = 0; - emit updated(); -} - - -/*! - \qmlclass Rectangle QDeclarativeRectangle - \ingroup qml-basic-visual-elements - \since 4.7 - \brief The Rectangle item provides a filled rectangle with an optional border. - \inherits Item - - Rectangle items are used to fill areas with solid color or gradients, and are - often used to hold other items. - - \section1 Appearance - - Each Rectangle item is painted using either a solid fill color, specified using - the \l color property, or a gradient, defined using a Gradient element and set - using the \l gradient property. If both a color and a gradient are specified, - the gradient is used. - - You can add an optional border to a rectangle with its own color and thickness - by settting the \l border.color and \l border.width properties. - - You can also create rounded rectangles using the \l radius property. Since this - introduces curved edges to the corners of a rectangle, it may be appropriate to - set the \l smooth property to improve its appearance. - - \section1 Example Usage - - \div {class="float-right"} - \inlineimage declarative-rect.png - \enddiv - - The following example shows the effects of some of the common properties on a - Rectangle item, which in this case is used to create a square: - - \snippet doc/src/snippets/declarative/rectangle/rectangle.qml document - - \clearfloat - \section1 Performance - - Using the \l smooth property improves the appearance of a rounded rectangle at - the cost of rendering performance. You should consider unsetting this property - for rectangles in motion, and only set it when they are stationary. - - \sa Image -*/ - -int QDeclarativeRectanglePrivate::doUpdateSlotIdx = -1; - -QDeclarativeRectangle::QDeclarativeRectangle(QDeclarativeItem *parent) - : QDeclarativeItem(*(new QDeclarativeRectanglePrivate), parent) -{ -} - -void QDeclarativeRectangle::doUpdate() -{ - Q_D(QDeclarativeRectangle); - d->rectImage = QPixmap(); - const int pw = d->pen && d->pen->isValid() ? d->pen->width() : 0; - d->setPaintMargin((pw+1)/2); - update(); -} - -/*! - \qmlproperty int Rectangle::border.width - \qmlproperty color Rectangle::border.color - - The width and color used to draw the border of the rectangle. - - A width of 1 creates a thin line. For no line, use a width of 0 or a transparent color. - - \note The width of the rectangle's border does not affect the geometry of the - rectangle itself or its position relative to other items if anchors are used. - - If \c border.width is an odd number, the rectangle is painted at a half-pixel offset to retain - border smoothness. Also, the border is rendered evenly on either side of the - rectangle's boundaries, and the spare pixel is rendered to the right and below the - rectangle (as documented for QRect rendering). This can cause unintended effects if - \c border.width is 1 and the rectangle is \l{Item::clip}{clipped} by a parent item: - - \div {class="float-right"} - \inlineimage rect-border-width.png - \enddiv - - \snippet doc/src/snippets/declarative/rectangle/rect-border-width.qml 0 - - \clearfloat - Here, the innermost rectangle's border is clipped on the bottom and right edges by its - parent. To avoid this, the border width can be set to two instead of one. -*/ -QDeclarativePen *QDeclarativeRectangle::border() -{ - Q_D(QDeclarativeRectangle); - return d->getPen(); -} - -/*! - \qmlproperty Gradient Rectangle::gradient - - The gradient to use to fill the rectangle. - - This property allows for the construction of simple vertical gradients. - Other gradients may by formed by adding rotation to the rectangle. - - \div {class="float-left"} - \inlineimage declarative-rect_gradient.png - \enddiv - - \snippet doc/src/snippets/declarative/rectangle/rectangle-gradient.qml rectangles - \clearfloat - - If both a gradient and a color are specified, the gradient will be used. - - \sa Gradient, color -*/ -QDeclarativeGradient *QDeclarativeRectangle::gradient() const -{ - Q_D(const QDeclarativeRectangle); - return d->gradient; -} - -void QDeclarativeRectangle::setGradient(QDeclarativeGradient *gradient) -{ - Q_D(QDeclarativeRectangle); - if (d->gradient == gradient) - return; - static int updatedSignalIdx = -1; - if (updatedSignalIdx < 0) - updatedSignalIdx = QDeclarativeGradient::staticMetaObject.indexOfSignal("updated()"); - if (d->doUpdateSlotIdx < 0) - d->doUpdateSlotIdx = QDeclarativeRectangle::staticMetaObject.indexOfSlot("doUpdate()"); - if (d->gradient) - QMetaObject::disconnect(d->gradient, updatedSignalIdx, this, d->doUpdateSlotIdx); - d->gradient = gradient; - if (d->gradient) - QMetaObject::connect(d->gradient, updatedSignalIdx, this, d->doUpdateSlotIdx); - update(); -} - - -/*! - \qmlproperty real Rectangle::radius - This property holds the corner radius used to draw a rounded rectangle. - - If radius is non-zero, the rectangle will be painted as a rounded rectangle, otherwise it will be - painted as a normal rectangle. The same radius is used by all 4 corners; there is currently - no way to specify different radii for different corners. -*/ -qreal QDeclarativeRectangle::radius() const -{ - Q_D(const QDeclarativeRectangle); - return d->radius; -} - -void QDeclarativeRectangle::setRadius(qreal radius) -{ - Q_D(QDeclarativeRectangle); - if (d->radius == radius) - return; - - d->radius = radius; - d->rectImage = QPixmap(); - update(); - emit radiusChanged(); -} - -/*! - \qmlproperty color Rectangle::color - This property holds the color used to fill the rectangle. - - The default color is white. - - \div {class="float-right"} - \inlineimage rect-color.png - \enddiv - - The following example shows rectangles with colors specified - using hexadecimal and named color notation: - - \snippet doc/src/snippets/declarative/rectangle/rectangle-colors.qml rectangles - - \clearfloat - If both a gradient and a color are specified, the gradient will be used. - - \sa gradient -*/ -QColor QDeclarativeRectangle::color() const -{ - Q_D(const QDeclarativeRectangle); - return d->color; -} - -void QDeclarativeRectangle::setColor(const QColor &c) -{ - Q_D(QDeclarativeRectangle); - if (d->color == c) - return; - - d->color = c; - d->rectImage = QPixmap(); - update(); - emit colorChanged(); -} - -void QDeclarativeRectangle::generateRoundedRect() -{ - Q_D(QDeclarativeRectangle); - if (d->rectImage.isNull()) { - const int pw = d->pen && d->pen->isValid() ? d->pen->width() : 0; - const int radius = qCeil(d->radius); //ensure odd numbered width/height so we get 1-pixel center - - QString key = QLatin1String("q_") % QString::number(pw) % d->color.name() % QString::number(d->color.alpha(), 16) % QLatin1Char('_') % QString::number(radius); - if (d->pen && d->pen->isValid()) - key += d->pen->color().name() % QString::number(d->pen->color().alpha(), 16); - - if (!QPixmapCache::find(key, &d->rectImage)) { - d->rectImage = QPixmap(radius*2 + 3 + pw*2, radius*2 + 3 + pw*2); - d->rectImage.fill(Qt::transparent); - QPainter p(&(d->rectImage)); - p.setRenderHint(QPainter::Antialiasing); - if (d->pen && d->pen->isValid()) { - QPen pn(QColor(d->pen->color()), d->pen->width()); - p.setPen(pn); - } else { - p.setPen(Qt::NoPen); - } - p.setBrush(d->color); - if (pw%2) - p.drawRoundedRect(QRectF(qreal(pw)/2+1, qreal(pw)/2+1, d->rectImage.width()-(pw+1), d->rectImage.height()-(pw+1)), d->radius, d->radius); - else - p.drawRoundedRect(QRectF(qreal(pw)/2, qreal(pw)/2, d->rectImage.width()-pw, d->rectImage.height()-pw), d->radius, d->radius); - - // end painting before inserting pixmap - // to pixmap cache to avoid a deep copy - p.end(); - QPixmapCache::insert(key, d->rectImage); - } - } -} - -void QDeclarativeRectangle::generateBorderedRect() -{ - Q_D(QDeclarativeRectangle); - if (d->rectImage.isNull()) { - const int pw = d->pen && d->pen->isValid() ? d->pen->width() : 0; - - QString key = QLatin1String("q_") % QString::number(pw) % d->color.name() % QString::number(d->color.alpha(), 16); - if (d->pen && d->pen->isValid()) - key += d->pen->color().name() % QString::number(d->pen->color().alpha(), 16); - - if (!QPixmapCache::find(key, &d->rectImage)) { - // Adding 5 here makes qDrawBorderPixmap() paint correctly with smooth: true - // See QTBUG-7999 and QTBUG-10765 for more details. - d->rectImage = QPixmap(pw*2 + 5, pw*2 + 5); - d->rectImage.fill(Qt::transparent); - QPainter p(&(d->rectImage)); - p.setRenderHint(QPainter::Antialiasing); - if (d->pen && d->pen->isValid()) { - QPen pn(QColor(d->pen->color()), d->pen->width()); - pn.setJoinStyle(Qt::MiterJoin); - p.setPen(pn); - } else { - p.setPen(Qt::NoPen); - } - p.setBrush(d->color); - if (pw%2) - p.drawRect(QRectF(qreal(pw)/2+1, qreal(pw)/2+1, d->rectImage.width()-(pw+1), d->rectImage.height()-(pw+1))); - else - p.drawRect(QRectF(qreal(pw)/2, qreal(pw)/2, d->rectImage.width()-pw, d->rectImage.height()-pw)); - - // end painting before inserting pixmap - // to pixmap cache to avoid a deep copy - p.end(); - QPixmapCache::insert(key, d->rectImage); - } - } -} - -void QDeclarativeRectangle::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWidget *) -{ - Q_D(QDeclarativeRectangle); - if (width() <= 0 || height() <= 0) - return; - if (d->radius > 0 || (d->pen && d->pen->isValid()) - || (d->gradient && d->gradient->gradient()) ) { - drawRect(*p); - } - else { - bool oldAA = p->testRenderHint(QPainter::Antialiasing); - if (d->smooth) - p->setRenderHints(QPainter::Antialiasing, true); - p->fillRect(QRectF(0, 0, width(), height()), d->color); - if (d->smooth) - p->setRenderHint(QPainter::Antialiasing, oldAA); - } -} - -void QDeclarativeRectangle::drawRect(QPainter &p) -{ - Q_D(QDeclarativeRectangle); - if ((d->gradient && d->gradient->gradient()) - || d->radius > width()/2 || d->radius > height()/2 - || width() < 3 || height() < 3) { - // XXX This path is still slower than the image path - // Image path won't work for gradients or invalid radius though - bool oldAA = p.testRenderHint(QPainter::Antialiasing); - if (d->smooth) - p.setRenderHint(QPainter::Antialiasing); - if (d->pen && d->pen->isValid()) { - QPen pn(QColor(d->pen->color()), d->pen->width()); - pn.setJoinStyle(Qt::MiterJoin); - p.setPen(pn); - } else { - p.setPen(Qt::NoPen); - } - if (d->gradient && d->gradient->gradient()) - p.setBrush(*d->gradient->gradient()); - else - p.setBrush(d->color); - const int pw = d->pen && d->pen->isValid() ? d->pen->width() : 0; - QRectF rect; - if (pw%2) - rect = QRectF(0.5, 0.5, width()-1, height()-1); - else - rect = QRectF(0, 0, width(), height()); - qreal radius = d->radius; - if (radius > width()/2 || radius > height()/2) - radius = qMin(width()/2, height()/2); - if (radius > 0.) - p.drawRoundedRect(rect, radius, radius); - else - p.drawRect(rect); - if (d->smooth) - p.setRenderHint(QPainter::Antialiasing, oldAA); - } else { - bool oldAA = p.testRenderHint(QPainter::Antialiasing); - bool oldSmooth = p.testRenderHint(QPainter::SmoothPixmapTransform); - if (d->smooth) - p.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform, d->smooth); - - const int pw = d->pen && d->pen->isValid() ? (d->pen->width()+1)/2*2 : 0; - - if (d->radius > 0) - generateRoundedRect(); - else - generateBorderedRect(); - - int xOffset = (d->rectImage.width()-1)/2; - int yOffset = (d->rectImage.height()-1)/2; - Q_ASSERT(d->rectImage.width() == 2*xOffset + 1); - Q_ASSERT(d->rectImage.height() == 2*yOffset + 1); - - // check whether we've eliminated the center completely - if (2*xOffset > width()+pw) - xOffset = (width()+pw)/2; - if (2*yOffset > height()+pw) - yOffset = (height()+pw)/2; - - QMargins margins(xOffset, yOffset, xOffset, yOffset); - QTileRules rules(Qt::StretchTile, Qt::StretchTile); - //NOTE: even though our item may have qreal-based width and height, qDrawBorderPixmap only supports QRects - qDrawBorderPixmap(&p, QRect(-pw/2, -pw/2, width()+pw, height()+pw), margins, d->rectImage, d->rectImage.rect(), margins, rules); - - if (d->smooth) { - p.setRenderHint(QPainter::Antialiasing, oldAA); - p.setRenderHint(QPainter::SmoothPixmapTransform, oldSmooth); - } - } -} - -/*! - \qmlproperty bool Rectangle::smooth - - Set this property if you want the item to be smoothly scaled or - transformed. Smooth filtering gives better visual quality, but is slower. If - the item is displayed at its natural size, this property has no visual or - performance effect. - - \note Generally scaling artifacts are only visible if the item is stationary on - the screen. A common pattern when animating an item is to disable smooth - filtering at the beginning of the animation and reenable it at the conclusion. - - \image rect-smooth.png - On this image, smooth is turned off on the top half and on on the bottom half. -*/ - -QRectF QDeclarativeRectangle::boundingRect() const -{ - Q_D(const QDeclarativeRectangle); - return QRectF(-d->paintmargin, -d->paintmargin, d->width()+d->paintmargin*2, d->height()+d->paintmargin*2); -} - -QT_END_NAMESPACE |