|
|
#include "axisitem_p.h"
|
|
|
#include "qchartaxis.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QDebug>
|
|
|
|
|
|
static int label_padding = 5;
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
AxisItem::AxisItem(QChartAxis* axis,AxisType type,QGraphicsItem* parent) :
|
|
|
ChartItem(parent),
|
|
|
m_chartAxis(axis),
|
|
|
m_type(type),
|
|
|
m_labelsAngle(0),
|
|
|
m_grid(parent),
|
|
|
m_shades(parent),
|
|
|
m_labels(parent),
|
|
|
m_axis(parent),
|
|
|
m_min(0),
|
|
|
m_max(0),
|
|
|
m_ticksCount(0)
|
|
|
{
|
|
|
//initial initialization
|
|
|
m_axis.setZValue(ChartPresenter::AxisZValue);
|
|
|
m_shades.setZValue(ChartPresenter::ShadesZValue);
|
|
|
m_grid.setZValue(ChartPresenter::GridZValue);
|
|
|
setFlags(QGraphicsItem::ItemHasNoContents);
|
|
|
|
|
|
QObject::connect(m_chartAxis,SIGNAL(updated()),this,SLOT(handleAxisUpdated()));
|
|
|
QObject::connect(m_chartAxis->categories(),SIGNAL(updated()),this,SLOT(handleAxisCategoriesUpdated()));
|
|
|
|
|
|
handleAxisUpdated();
|
|
|
}
|
|
|
|
|
|
AxisItem::~AxisItem()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QRectF AxisItem::boundingRect() const
|
|
|
{
|
|
|
return QRectF();
|
|
|
}
|
|
|
|
|
|
void AxisItem::createItems(int count)
|
|
|
{
|
|
|
if(m_axis.children().size()==0)
|
|
|
m_axis.addToGroup(new QGraphicsLineItem());
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
m_grid.addToGroup(new QGraphicsLineItem());
|
|
|
m_labels.addToGroup(new QGraphicsSimpleTextItem());
|
|
|
if(m_grid.childItems().size()%2) m_shades.addToGroup(new QGraphicsRectItem());
|
|
|
m_axis.addToGroup(new QGraphicsLineItem());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::deleteItems(int count)
|
|
|
{
|
|
|
QList<QGraphicsItem *> lines = m_grid.childItems();
|
|
|
QList<QGraphicsItem *> labels = m_labels.childItems();
|
|
|
QList<QGraphicsItem *> shades = m_shades.childItems();
|
|
|
QList<QGraphicsItem *> axis = m_axis.childItems();
|
|
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
delete(lines.takeLast());
|
|
|
delete(labels.takeLast());
|
|
|
if(lines.size()%2) delete(shades.takeLast());
|
|
|
delete(axis.takeLast());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::updateLayout(QVector<qreal>& layout)
|
|
|
{
|
|
|
setLayout(layout);
|
|
|
}
|
|
|
|
|
|
QStringList AxisItem::createLabels(int ticks, qreal min, qreal max) const
|
|
|
{
|
|
|
Q_ASSERT(max>=min);
|
|
|
Q_ASSERT(ticks>0);
|
|
|
|
|
|
QStringList labels;
|
|
|
|
|
|
QChartAxisCategories* categories = m_chartAxis->categories();
|
|
|
|
|
|
for(int i=0; i< ticks; i++) {
|
|
|
qreal value = min + (i * (max - min)/ (ticks-1));
|
|
|
if(categories->count()==0) {
|
|
|
labels << QString::number(value);
|
|
|
}
|
|
|
else {
|
|
|
QString label = categories->label(value);
|
|
|
labels << label;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
return labels;
|
|
|
}
|
|
|
|
|
|
void AxisItem::setAxisOpacity(qreal opacity)
|
|
|
{
|
|
|
m_axis.setOpacity(opacity);
|
|
|
}
|
|
|
|
|
|
qreal AxisItem::axisOpacity() const
|
|
|
{
|
|
|
return m_axis.opacity();
|
|
|
}
|
|
|
|
|
|
void AxisItem::setGridOpacity(qreal opacity)
|
|
|
{
|
|
|
m_grid.setOpacity(opacity);
|
|
|
}
|
|
|
|
|
|
qreal AxisItem::gridOpacity() const
|
|
|
{
|
|
|
return m_grid.opacity();
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLabelsOpacity(qreal opacity)
|
|
|
{
|
|
|
m_labels.setOpacity(opacity);
|
|
|
}
|
|
|
|
|
|
qreal AxisItem::labelsOpacity() const
|
|
|
{
|
|
|
return m_labels.opacity();
|
|
|
}
|
|
|
|
|
|
void AxisItem::setShadesOpacity(qreal opacity)
|
|
|
{
|
|
|
m_shades.setOpacity(opacity);
|
|
|
}
|
|
|
|
|
|
qreal AxisItem::shadesOpacity() const
|
|
|
{
|
|
|
return m_shades.opacity();
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLabelsAngle(int angle)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_labels.childItems()) {
|
|
|
QPointF center = item->boundingRect().center();
|
|
|
item->setRotation(angle);
|
|
|
}
|
|
|
|
|
|
m_labelsAngle=angle;
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLabelsPen(const QPen& pen)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_labels.childItems()) {
|
|
|
static_cast<QGraphicsSimpleTextItem*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLabelsBrush(const QBrush& brush)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_labels.childItems()) {
|
|
|
static_cast<QGraphicsSimpleTextItem*>(item)->setBrush(brush);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLabelsFont(const QFont& font)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_labels.childItems()) {
|
|
|
static_cast<QGraphicsSimpleTextItem*>(item)->setFont(font);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setShadesBrush(const QBrush& brush)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_shades.childItems()) {
|
|
|
static_cast<QGraphicsRectItem*>(item)->setBrush(brush);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setShadesPen(const QPen& pen)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_shades.childItems()) {
|
|
|
static_cast<QGraphicsRectItem*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setAxisPen(const QPen& pen)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_axis.childItems()) {
|
|
|
static_cast<QGraphicsLineItem*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void AxisItem::setGridPen(const QPen& pen)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_grid.childItems()) {
|
|
|
static_cast<QGraphicsLineItem*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QVector<qreal> AxisItem::calculateLayout() const
|
|
|
{
|
|
|
Q_ASSERT(m_ticksCount>=2);
|
|
|
|
|
|
QVector<qreal> points;
|
|
|
points.resize(m_ticksCount);
|
|
|
|
|
|
switch (m_type)
|
|
|
{
|
|
|
case X_AXIS:
|
|
|
{
|
|
|
const qreal deltaX = m_rect.width()/(m_ticksCount-1);
|
|
|
for (int i = 0; i < m_ticksCount; ++i) {
|
|
|
int x = i * deltaX + m_rect.left();
|
|
|
points[i] = x;
|
|
|
}
|
|
|
}
|
|
|
break;
|
|
|
case Y_AXIS:
|
|
|
{
|
|
|
const qreal deltaY = m_rect.height()/(m_ticksCount-1);
|
|
|
for (int i = 0; i < m_ticksCount; ++i) {
|
|
|
int y = i * -deltaY + m_rect.bottom();
|
|
|
points[i] = y;
|
|
|
}
|
|
|
}
|
|
|
break;
|
|
|
}
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
void AxisItem::setLayout(QVector<qreal>& layout)
|
|
|
{
|
|
|
int diff = m_layoutVector.size() - layout.size();
|
|
|
|
|
|
if(diff>0) {
|
|
|
deleteItems(diff);
|
|
|
}
|
|
|
else if(diff<0) {
|
|
|
createItems(-diff);
|
|
|
}
|
|
|
|
|
|
QList<QGraphicsItem *> lines = m_grid.childItems();
|
|
|
QList<QGraphicsItem *> labels = m_labels.childItems();
|
|
|
QList<QGraphicsItem *> shades = m_shades.childItems();
|
|
|
QList<QGraphicsItem *> axis = m_axis.childItems();
|
|
|
|
|
|
Q_ASSERT(labels.size() == m_ticksList.size());
|
|
|
Q_ASSERT(layout.size() == m_ticksList.size());
|
|
|
|
|
|
switch (m_type)
|
|
|
{
|
|
|
case X_AXIS:
|
|
|
{
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
|
|
|
lineItem->setLine(m_rect.left(), m_rect.bottom(), m_rect.right(), m_rect.bottom());
|
|
|
|
|
|
for (int i = 0; i < layout.size(); ++i) {
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
|
|
|
lineItem->setLine(layout[i], m_rect.top(), layout[i], m_rect.bottom());
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
|
|
|
labelItem->setText(m_ticksList.at(i));
|
|
|
QPointF center = labelItem->boundingRect().center();
|
|
|
labelItem->setTransformOriginPoint(center.x(), center.y());
|
|
|
labelItem->setPos(layout[i] - center.x(), m_rect.bottom() + label_padding);
|
|
|
if(i%2 && i+1 < layout.size()) {
|
|
|
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2));
|
|
|
rectItem->setRect(layout[i],m_rect.top(),layout[i+1]-layout[i],m_rect.height());
|
|
|
}
|
|
|
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
|
|
|
lineItem->setLine(layout[i],m_rect.bottom(),layout[i],m_rect.bottom()+5);
|
|
|
}
|
|
|
}
|
|
|
break;
|
|
|
|
|
|
case Y_AXIS:
|
|
|
{
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
|
|
|
lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom());
|
|
|
|
|
|
for (int i = 0; i < layout.size(); ++i) {
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
|
|
|
lineItem->setLine(m_rect.left() , layout[i], m_rect.right(), layout[i]);
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
|
|
|
labelItem->setText(m_ticksList.at(i));
|
|
|
QPointF center = labelItem->boundingRect().center();
|
|
|
labelItem->setTransformOriginPoint(center.x(), center.y());
|
|
|
labelItem->setPos(m_rect.left() - labelItem->boundingRect().width() - label_padding , layout[i]-center.y());
|
|
|
if(i%2 && i+1 < layout.size()) {
|
|
|
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2));
|
|
|
rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i]-layout[i+1]);
|
|
|
}
|
|
|
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
|
|
|
lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]);
|
|
|
}
|
|
|
}
|
|
|
break;
|
|
|
default:
|
|
|
qDebug()<<"Unknown axis type";
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
if(diff!=0) handleAxisUpdated();
|
|
|
m_layoutVector=layout;
|
|
|
}
|
|
|
|
|
|
bool AxisItem::isEmpty()
|
|
|
{
|
|
|
return m_rect.isEmpty() || m_min==m_max || m_ticksCount==0;
|
|
|
}
|
|
|
|
|
|
//handlers
|
|
|
|
|
|
void AxisItem::handleAxisCategoriesUpdated()
|
|
|
{
|
|
|
if(isEmpty()) return;
|
|
|
m_ticksList = createLabels(m_ticksCount,m_min,m_max);
|
|
|
updateLayout(m_layoutVector);
|
|
|
}
|
|
|
|
|
|
void AxisItem::handleAxisUpdated()
|
|
|
{
|
|
|
|
|
|
int count = m_chartAxis->ticksCount();
|
|
|
|
|
|
if(m_ticksCount!=count){
|
|
|
handleTicksCountChanged(count);
|
|
|
}
|
|
|
|
|
|
if(isEmpty()) return;
|
|
|
|
|
|
if(m_chartAxis->isAxisVisible()) {
|
|
|
setAxisOpacity(100);
|
|
|
}
|
|
|
else {
|
|
|
setAxisOpacity(0);
|
|
|
}
|
|
|
|
|
|
if(m_chartAxis->isGridVisible()) {
|
|
|
setGridOpacity(100);
|
|
|
}
|
|
|
else {
|
|
|
setGridOpacity(0);
|
|
|
}
|
|
|
|
|
|
if(m_chartAxis->labelsVisible())
|
|
|
{
|
|
|
setLabelsOpacity(100);
|
|
|
}
|
|
|
else {
|
|
|
setLabelsOpacity(0);
|
|
|
}
|
|
|
|
|
|
if(m_chartAxis->shadesVisible()) {
|
|
|
setShadesOpacity(m_chartAxis->shadesOpacity());
|
|
|
}
|
|
|
else {
|
|
|
setShadesOpacity(0);
|
|
|
}
|
|
|
|
|
|
setLabelsAngle(m_chartAxis->labelsAngle());
|
|
|
setAxisPen(m_chartAxis->axisPen());
|
|
|
setLabelsPen(m_chartAxis->labelsPen());
|
|
|
setLabelsBrush(m_chartAxis->labelsBrush());
|
|
|
setLabelsFont(m_chartAxis->labelsFont());
|
|
|
setGridPen(m_chartAxis->gridPen());
|
|
|
setShadesPen(m_chartAxis->shadesPen());
|
|
|
setShadesBrush(m_chartAxis->shadesBrush());
|
|
|
|
|
|
}
|
|
|
|
|
|
void AxisItem::handleTicksCountChanged(int count)
|
|
|
{
|
|
|
m_ticksCount=count;
|
|
|
|
|
|
if(isEmpty()) return;
|
|
|
m_ticksList = createLabels(m_ticksCount,m_min,m_max);
|
|
|
QVector<qreal> layout = calculateLayout();
|
|
|
updateLayout(layout);
|
|
|
}
|
|
|
|
|
|
void AxisItem::handleRangeChanged(qreal min, qreal max)
|
|
|
{
|
|
|
|
|
|
m_min = min;
|
|
|
m_max = max;
|
|
|
|
|
|
if(isEmpty()) return;
|
|
|
m_ticksList = createLabels(m_ticksCount,m_min,m_max);
|
|
|
QVector<qreal> layout = calculateLayout();
|
|
|
updateLayout(layout);
|
|
|
|
|
|
}
|
|
|
|
|
|
void AxisItem::handleGeometryChanged(const QRectF& rect)
|
|
|
{
|
|
|
|
|
|
m_rect = rect;
|
|
|
if(isEmpty()) return;
|
|
|
m_ticksList = createLabels(m_ticksCount,m_min,m_max);
|
|
|
QVector<qreal> layout = calculateLayout();
|
|
|
updateLayout(layout);
|
|
|
}
|
|
|
|
|
|
//painter
|
|
|
|
|
|
void AxisItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(painter);
|
|
|
Q_UNUSED(option);
|
|
|
Q_UNUSED(widget);
|
|
|
}
|
|
|
|
|
|
//TODO "nice numbers algorithm"
|
|
|
#include "moc_axisitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
