legendmarkeritem.cpp
215 lines
| 6.2 KiB
| text/x-c
|
CppLexer
|
r2854 | /**************************************************************************** | ||
|
r2845 | ** | ||
|
r2854 | ** Copyright (C) 2016 The Qt Company Ltd. | ||
** Contact: https://www.qt.io/licensing/ | ||||
|
r2845 | ** | ||
|
r2854 | ** This file is part of the Qt Charts module of the Qt Toolkit. | ||
|
r2845 | ** | ||
|
r2854 | ** $QT_BEGIN_LICENSE:GPL$ | ||
|
r2845 | ** Commercial License Usage | ||
** Licensees holding valid commercial Qt licenses may use this file in | ||||
** accordance with the commercial license agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and The Qt Company. For licensing terms | ||||
|
r2854 | ** and conditions see https://www.qt.io/terms-conditions. For further | ||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
|
r2845 | ** | ||
** $QT_END_LICENSE$ | ||||
** | ||||
|
r2854 | ****************************************************************************/ | ||
|
r2164 | |||
|
r2714 | #include <QtGui/QPainter> | ||
#include <QtWidgets/QGraphicsSceneEvent> | ||||
#include <QtWidgets/QGraphicsTextItem> | ||||
#include <QtGui/QTextDocument> | ||||
|
r2164 | |||
|
r2714 | #include <QtCharts/QLegend> | ||
#include <private/qlegend_p.h> | ||||
#include <QtCharts/QLegendMarker> | ||||
#include <private/qlegendmarker_p.h> | ||||
#include <private/legendmarkeritem_p.h> | ||||
#include <private/chartpresenter_p.h> | ||||
|
r2167 | |||
|
r2712 | QT_CHARTS_BEGIN_NAMESPACE | ||
|
r2164 | |||
|
r2167 | LegendMarkerItem::LegendMarkerItem(QLegendMarkerPrivate *marker, QGraphicsObject *parent) : | ||
|
r2164 | QGraphicsObject(parent), | ||
|
r2167 | m_marker(marker), | ||
|
r2164 | m_markerRect(0,0,10.0,10.0), | ||
|
r2170 | m_boundingRect(0,0,0,0), | ||
|
r2539 | m_textItem(new QGraphicsTextItem(this)), | ||
|
r2164 | m_rectItem(new QGraphicsRectItem(this)), | ||
|
r2592 | m_margin(3), | ||
m_space(4), | ||||
|
r2210 | m_hovering(false), | ||
|
r2189 | m_pressPos(0, 0) | ||
|
r2164 | { | ||
m_rectItem->setRect(m_markerRect); | ||||
|
r2592 | m_textItem->document()->setDocumentMargin(ChartPresenter::textMargin()); | ||
|
r2241 | setAcceptHoverEvents(true); | ||
|
r2210 | } | ||
LegendMarkerItem::~LegendMarkerItem() | ||||
{ | ||||
if (m_hovering) { | ||||
emit m_marker->q_ptr->hovered(false); | ||||
} | ||||
|
r2164 | } | ||
void LegendMarkerItem::setPen(const QPen &pen) | ||||
{ | ||||
m_rectItem->setPen(pen); | ||||
} | ||||
QPen LegendMarkerItem::pen() const | ||||
{ | ||||
return m_rectItem->pen(); | ||||
} | ||||
void LegendMarkerItem::setBrush(const QBrush &brush) | ||||
{ | ||||
m_rectItem->setBrush(brush); | ||||
} | ||||
QBrush LegendMarkerItem::brush() const | ||||
{ | ||||
return m_rectItem->brush(); | ||||
} | ||||
void LegendMarkerItem::setFont(const QFont &font) | ||||
{ | ||||
m_textItem->setFont(font); | ||||
QFontMetrics fn(font); | ||||
m_markerRect = QRectF(0,0,fn.height()/2,fn.height()/2); | ||||
updateGeometry(); | ||||
} | ||||
QFont LegendMarkerItem::font() const | ||||
{ | ||||
return m_textItem->font(); | ||||
} | ||||
void LegendMarkerItem::setLabel(const QString label) | ||||
{ | ||||
|
r2174 | m_label = label; | ||
|
r2164 | updateGeometry(); | ||
} | ||||
QString LegendMarkerItem::label() const | ||||
{ | ||||
|
r2174 | return m_label; | ||
|
r2164 | } | ||
void LegendMarkerItem::setLabelBrush(const QBrush &brush) | ||||
{ | ||||
|
r2539 | m_textItem->setDefaultTextColor(brush.color()); | ||
|
r2164 | } | ||
QBrush LegendMarkerItem::labelBrush() const | ||||
{ | ||||
|
r2539 | return QBrush(m_textItem->defaultTextColor()); | ||
|
r2164 | } | ||
|
r2193 | void LegendMarkerItem::setGeometry(const QRectF &rect) | ||
|
r2164 | { | ||
|
r2544 | qreal width = rect.width(); | ||
|
r2539 | qreal x = m_margin + m_markerRect.width() + m_space + m_margin; | ||
QRectF truncatedRect; | ||||
|
r2864 | const QString html = ChartPresenter::truncatedText(m_textItem->font(), m_label, qreal(0.0), | ||
width - x, rect.height(), truncatedRect); | ||||
m_textItem->setHtml(html); | ||||
if (m_marker->m_legend->showToolTips() && html != m_label) | ||||
m_textItem->setToolTip(m_label); | ||||
else | ||||
m_textItem->setToolTip(QString()); | ||||
|
r2164 | |||
|
r2607 | m_textItem->setTextWidth(truncatedRect.width()); | ||
|
r2164 | |||
|
r2539 | qreal y = qMax(m_markerRect.height() + 2 * m_margin, truncatedRect.height() + 2 * m_margin); | ||
const QRectF &textRect = m_textItem->boundingRect(); | ||||
|
r2164 | |||
|
r2539 | m_textItem->setPos(x - m_margin, y / 2 - textRect.height() / 2); | ||
|
r2164 | m_rectItem->setRect(m_markerRect); | ||
|
r2592 | // The textMargin adjustments to position are done to make default case rects less blurry with anti-aliasing | ||
m_rectItem->setPos(m_margin - ChartPresenter::textMargin(), y / 2.0 - m_markerRect.height() / 2.0 + ChartPresenter::textMargin()); | ||||
|
r2164 | |||
prepareGeometryChange(); | ||||
|
r2539 | m_boundingRect = QRectF(0, 0, x + textRect.width() + m_margin, y); | ||
|
r2164 | } | ||
|
r2168 | QRectF LegendMarkerItem::boundingRect() const | ||
{ | ||||
return m_boundingRect; | ||||
} | ||||
|
r2164 | void LegendMarkerItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||
{ | ||||
Q_UNUSED(option) | ||||
Q_UNUSED(widget) | ||||
Q_UNUSED(painter) | ||||
} | ||||
QSizeF LegendMarkerItem::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const | ||||
{ | ||||
Q_UNUSED(constraint) | ||||
QSizeF sh; | ||||
|
r2544 | switch (which) { | ||
case Qt::MinimumSize: { | ||||
|
r2712 | QRectF labelRect = ChartPresenter::textBoundingRect(m_textItem->font(), | ||
QStringLiteral("...")); | ||||
|
r2544 | sh = QSizeF(labelRect.width() + (2.0 * m_margin) + m_space + m_markerRect.width(), | ||
qMax(m_markerRect.height(), labelRect.height()) + (2.0 * m_margin)); | ||||
break; | ||||
} | ||||
case Qt::PreferredSize: { | ||||
QRectF labelRect = ChartPresenter::textBoundingRect(m_textItem->font(), m_label); | ||||
sh = QSizeF(labelRect.width() + (2.0 * m_margin) + m_space + m_markerRect.width(), | ||||
qMax(m_markerRect.height(), labelRect.height()) + (2.0 * m_margin)); | ||||
break; | ||||
} | ||||
default: | ||||
break; | ||||
} | ||||
return sh; | ||||
|
r2164 | } | ||
|
r2210 | void LegendMarkerItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) | ||
{ | ||||
Q_UNUSED(event) | ||||
m_hovering = true; | ||||
emit m_marker->q_ptr->hovered(true); | ||||
} | ||||
void LegendMarkerItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) | ||||
{ | ||||
Q_UNUSED(event) | ||||
m_hovering = false; | ||||
emit m_marker->q_ptr->hovered(false); | ||||
} | ||||
|
r2864 | QString LegendMarkerItem::displayedLabel() const | ||
{ | ||||
return m_textItem->toHtml(); | ||||
} | ||||
void LegendMarkerItem::setToolTip(const QString &tip) | ||||
{ | ||||
m_textItem->setToolTip(tip); | ||||
} | ||||
|
r2210 | |||
|
r2164 | #include "moc_legendmarkeritem_p.cpp" | ||
|
r2712 | QT_CHARTS_END_NAMESPACE | ||