|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "legendlayout_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "legendmarker_p.h"
|
|
|
#include "qlegend_p.h"
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
LegendLayout::LegendLayout(QLegend* legend):
|
|
|
m_legend(legend)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
LegendLayout::~LegendLayout()
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
void LegendLayout::setOffset(qreal x, qreal y)
|
|
|
{
|
|
|
bool scrollHorizontal = true;
|
|
|
switch(m_legend->alignment()) {
|
|
|
case Qt::AlignTop:
|
|
|
case Qt::AlignBottom: {
|
|
|
scrollHorizontal = true;
|
|
|
break;
|
|
|
}
|
|
|
case Qt::AlignLeft:
|
|
|
case Qt::AlignRight: {
|
|
|
scrollHorizontal = false;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If detached, the scrolling direction is vertical instead of horizontal and vice versa.
|
|
|
if (!m_legend->isAttachedToChart()) {
|
|
|
scrollHorizontal = !scrollHorizontal;
|
|
|
}
|
|
|
|
|
|
QRectF boundingRect = geometry();
|
|
|
|
|
|
// Limit offset between m_minOffset and m_maxOffset
|
|
|
if (scrollHorizontal) {
|
|
|
if(m_width<=boundingRect.width()) return;
|
|
|
|
|
|
if (x != m_offsetX) {
|
|
|
m_offsetX = qBound(m_minOffsetX, x, m_maxOffsetX);
|
|
|
m_legend->d_ptr->items()->setPos(-m_offsetX,boundingRect.top());
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
if(m_height<=boundingRect.height()) return;
|
|
|
|
|
|
if (y != m_offsetY) {
|
|
|
m_offsetY = qBound(m_minOffsetY, y, m_maxOffsetY);
|
|
|
m_legend->d_ptr->items()->setPos(boundingRect.left(),-m_offsetY);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QPointF LegendLayout::offset() const
|
|
|
{
|
|
|
return QPointF(m_offsetX,m_offsetY);
|
|
|
}
|
|
|
|
|
|
void LegendLayout::setGeometry(const QRectF& rect)
|
|
|
{
|
|
|
m_legend->d_ptr->items()->setVisible(m_legend->isVisible());
|
|
|
|
|
|
if(m_legend->isAttachedToChart()) {
|
|
|
|
|
|
setAttachedGeometry(rect);
|
|
|
}
|
|
|
else {
|
|
|
setDettachedGeometry(rect);
|
|
|
}
|
|
|
|
|
|
QGraphicsLayout::setGeometry(rect);
|
|
|
}
|
|
|
|
|
|
void LegendLayout::setAttachedGeometry(const QRectF& rect)
|
|
|
{
|
|
|
if (!rect.isValid()) return;
|
|
|
|
|
|
m_offsetX=0;
|
|
|
m_offsetY=0;
|
|
|
|
|
|
QSizeF size(0,0);
|
|
|
|
|
|
if( m_legend->d_ptr->markers().isEmpty()) return;
|
|
|
|
|
|
m_width=0;
|
|
|
m_height=0;
|
|
|
|
|
|
switch(m_legend->alignment()) {
|
|
|
|
|
|
case Qt::AlignTop:
|
|
|
|
|
|
case Qt::AlignBottom: {
|
|
|
QPointF point(0,0);
|
|
|
foreach (LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
marker->setPos(point.x(),rect.height()/2 - marker->boundingRect().height()/2);
|
|
|
const QRectF& rect = marker->boundingRect();
|
|
|
size = size.expandedTo(rect.size());
|
|
|
qreal w = rect.width();
|
|
|
m_width+=w;
|
|
|
point.setX(point.x() + w);
|
|
|
}
|
|
|
}
|
|
|
if(m_width<rect.width()) {
|
|
|
m_legend->d_ptr->items()->setPos(rect.width()/2-m_width/2,rect.top());
|
|
|
|
|
|
}
|
|
|
else {
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
}
|
|
|
m_height=size.height();
|
|
|
}
|
|
|
break;
|
|
|
case Qt::AlignLeft:
|
|
|
case Qt::AlignRight: {
|
|
|
QPointF point(0,0);
|
|
|
foreach (LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
marker->setPos(point);
|
|
|
const QRectF& rect = marker->boundingRect();
|
|
|
qreal h = rect.height();
|
|
|
size = size.expandedTo(rect.size());
|
|
|
m_height+=h;
|
|
|
point.setY(point.y() + h);
|
|
|
}
|
|
|
}
|
|
|
if(m_height<rect.height()) {
|
|
|
m_legend->d_ptr->items()->setPos(rect.left(),rect.height()/2-m_height/2);
|
|
|
}
|
|
|
else {
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
}
|
|
|
m_width=size.width();
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
m_minOffsetX = 0;
|
|
|
m_minOffsetY = 0;
|
|
|
m_maxOffsetX = m_width - rect.width();
|
|
|
m_maxOffsetY = m_height - rect.height();
|
|
|
}
|
|
|
|
|
|
void LegendLayout::setDettachedGeometry(const QRectF& rect)
|
|
|
{
|
|
|
if (!rect.isValid()) return;
|
|
|
|
|
|
// Detached layout is different.
|
|
|
// In detached mode legend may have multiple rows and columns, so layout calculations
|
|
|
// differ a log from attached mode.
|
|
|
// Also the scrolling logic is bit different.
|
|
|
|
|
|
m_offsetX=0;
|
|
|
m_offsetY=0;
|
|
|
|
|
|
QSizeF size(0,0);
|
|
|
|
|
|
QList<LegendMarker *> markers = m_legend->d_ptr->markers();
|
|
|
|
|
|
if(markers.isEmpty()) return;
|
|
|
|
|
|
switch (m_legend->alignment()) {
|
|
|
case Qt::AlignTop: {
|
|
|
QPointF point = rect.topLeft();
|
|
|
m_width = 0;
|
|
|
m_height = 0;
|
|
|
for (int i=0; i<markers.count(); i++) {
|
|
|
LegendMarker *marker = markers.at(i);
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
marker->setPos(point.x(),point.y());
|
|
|
const QRectF& boundingRect = marker->boundingRect();
|
|
|
qreal w = boundingRect.width();
|
|
|
qreal h = boundingRect.height();
|
|
|
m_width = qMax(m_width,w);
|
|
|
m_height = qMax(m_height,h);
|
|
|
point.setX(point.x() + w);
|
|
|
if (point.x() + w > rect.topLeft().x() + rect.width()) {
|
|
|
// Next item would go off rect.
|
|
|
point.setX(rect.topLeft().x());
|
|
|
point.setY(point.y() + h);
|
|
|
if (i+1 < markers.count()) {
|
|
|
m_height += h;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
|
|
|
m_minOffsetX = 0;
|
|
|
m_minOffsetY = 0;
|
|
|
m_maxOffsetX = m_width - rect.width();
|
|
|
m_maxOffsetY = m_height - rect.height();
|
|
|
}
|
|
|
break;
|
|
|
case Qt::AlignBottom: {
|
|
|
QPointF point = rect.bottomLeft();
|
|
|
m_width = 0;
|
|
|
m_height = 0;
|
|
|
for (int i=0; i<markers.count(); i++) {
|
|
|
LegendMarker *marker = markers.at(i);
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
const QRectF& boundingRect = marker->boundingRect();
|
|
|
qreal w = boundingRect.width();
|
|
|
qreal h = boundingRect.height();
|
|
|
m_width = qMax(m_width,w);
|
|
|
m_height = qMax(m_height,h);
|
|
|
marker->setPos(point.x(),point.y() - h);
|
|
|
point.setX(point.x() + w);
|
|
|
if (point.x() + w > rect.bottomLeft().x() + rect.width()) {
|
|
|
// Next item would go off rect.
|
|
|
point.setX(rect.bottomLeft().x());
|
|
|
point.setY(point.y() - h);
|
|
|
if (i+1 < markers.count()) {
|
|
|
m_height += h;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
|
|
|
m_minOffsetX = 0;
|
|
|
m_minOffsetY = qMin(rect.topLeft().y(), rect.topLeft().y() - m_height + rect.height());
|
|
|
m_maxOffsetX = m_width - rect.width();
|
|
|
m_maxOffsetY = 0;
|
|
|
}
|
|
|
break;
|
|
|
case Qt::AlignLeft: {
|
|
|
QPointF point = rect.topLeft();
|
|
|
m_width = 0;
|
|
|
m_height = 0;
|
|
|
qreal maxWidth = 0;
|
|
|
for (int i=0; i<markers.count(); i++) {
|
|
|
LegendMarker *marker = markers.at(i);
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
const QRectF& boundingRect = marker->boundingRect();
|
|
|
qreal w = boundingRect.width();
|
|
|
qreal h = boundingRect.height();
|
|
|
m_height = qMax(m_height,h);
|
|
|
maxWidth = qMax(maxWidth,w);
|
|
|
marker->setPos(point.x(),point.y());
|
|
|
point.setY(point.y() + h);
|
|
|
if (point.y() + h > rect.topLeft().y() + rect.height()) {
|
|
|
// Next item would go off rect.
|
|
|
point.setX(point.x() + maxWidth);
|
|
|
point.setY(rect.topLeft().y());
|
|
|
if (i+1 < markers.count()) {
|
|
|
m_width += maxWidth;
|
|
|
maxWidth = 0;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
m_width += maxWidth;
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
|
|
|
m_minOffsetX = 0;
|
|
|
m_minOffsetY = 0;
|
|
|
m_maxOffsetX = m_width - rect.width();
|
|
|
m_maxOffsetY = m_height - rect.height();
|
|
|
}
|
|
|
break;
|
|
|
case Qt::AlignRight: {
|
|
|
QPointF point = rect.topRight();
|
|
|
m_width = 0;
|
|
|
m_height = 0;
|
|
|
qreal maxWidth = 0;
|
|
|
for (int i=0; i<markers.count(); i++) {
|
|
|
LegendMarker *marker = markers.at(i);
|
|
|
if (marker->isVisible()) {
|
|
|
marker->setGeometry(QRectF(QPointF(0,0),marker->effectiveSizeHint(Qt::PreferredSize)));
|
|
|
const QRectF& boundingRect = marker->boundingRect();
|
|
|
qreal w = boundingRect.width();
|
|
|
qreal h = boundingRect.height();
|
|
|
m_height = qMax(m_height,h);
|
|
|
maxWidth = qMax(maxWidth,w);
|
|
|
marker->setPos(point.x() - w,point.y());
|
|
|
point.setY(point.y() + h);
|
|
|
if (point.y() + h > rect.topLeft().y() + rect.height()) {
|
|
|
// Next item would go off rect.
|
|
|
point.setX(point.x() - maxWidth);
|
|
|
point.setY(rect.topLeft().y());
|
|
|
if (i+1 < markers.count()) {
|
|
|
m_width += maxWidth;
|
|
|
maxWidth = 0;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
m_width += maxWidth;
|
|
|
m_legend->d_ptr->items()->setPos(rect.topLeft());
|
|
|
|
|
|
m_minOffsetX = qMin(rect.topLeft().x(), rect.topLeft().x() - m_width + rect.width());
|
|
|
m_minOffsetY = 0;
|
|
|
m_maxOffsetX = 0;
|
|
|
m_maxOffsetY = m_height - rect.height();
|
|
|
}
|
|
|
break;
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
QSizeF LegendLayout::sizeHint ( Qt::SizeHint which, const QSizeF & constraint) const
|
|
|
{
|
|
|
QSizeF size(0, 0);
|
|
|
qreal left, top, right, bottom;
|
|
|
getContentsMargins(&left, &top, &right, &bottom);
|
|
|
|
|
|
if(which!=Qt::PreferredSize) return QSizeF(-1,-1);
|
|
|
|
|
|
if(constraint.isValid()) {
|
|
|
foreach(LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
size = size.expandedTo(marker->effectiveSizeHint(which));
|
|
|
}
|
|
|
size = size.boundedTo(constraint);
|
|
|
}
|
|
|
else if (constraint.width() >= 0) {
|
|
|
qreal width = 0;
|
|
|
qreal height = 0;
|
|
|
foreach(LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
width+=marker->effectiveSizeHint(which).width();
|
|
|
height=qMax(height,marker->effectiveSizeHint(which).height());
|
|
|
}
|
|
|
|
|
|
size = QSizeF(qMin(constraint.width(),width), height);
|
|
|
}
|
|
|
else if (constraint.height() >= 0) {
|
|
|
qreal width = 0;
|
|
|
qreal height = 0;
|
|
|
foreach(LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
width=qMax(width,marker->effectiveSizeHint(which).width());
|
|
|
height+=height,marker->effectiveSizeHint(which).height();
|
|
|
}
|
|
|
size = QSizeF(width,qMin(constraint.height(),height));
|
|
|
}
|
|
|
else {
|
|
|
foreach(LegendMarker* marker, m_legend->d_ptr->markers()) {
|
|
|
size = size.expandedTo(marker->effectiveSizeHint(which));
|
|
|
}
|
|
|
}
|
|
|
size += QSize(left + right, top + bottom);
|
|
|
|
|
|
return size;
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
