axisitem.cpp
340 lines
| 9.5 KiB
| text/x-c
|
CppLexer
/ src / axisitem.cpp
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r67 | #include "axisitem_p.h" | ||
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r140 | #include "qchartaxis.h" | ||
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r262 | #include "chartpresenter_p.h" | ||
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r67 | #include <QPainter> | ||
#include <QDebug> | ||||
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r176 | static int label_padding = 5; | ||
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r85 | |||
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r67 | QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||
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r176 | AxisItem::AxisItem(AxisType type,QGraphicsItem* parent) : | ||
ChartItem(parent), | ||||
m_type(type), | ||||
m_labelsAngle(0), | ||||
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r184 | m_grid(parent), | ||
m_shades(parent), | ||||
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r262 | m_labels(parent), | ||
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r272 | m_axis(parent) | ||
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r67 | { | ||
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r145 | //initial initialization | ||
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r272 | m_axis.setZValue(ChartPresenter::AxisZValue); | ||
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r262 | m_shades.setZValue(ChartPresenter::ShadesZValue); | ||
m_grid.setZValue(ChartPresenter::GridZValue); | ||||
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r272 | setFlags(QGraphicsItem::ItemHasNoContents); | ||
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r67 | } | ||
AxisItem::~AxisItem() | ||||
{ | ||||
} | ||||
QRectF AxisItem::boundingRect() const | ||||
{ | ||||
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r291 | return QRectF(); | ||
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r67 | } | ||
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r223 | void AxisItem::createItems(int count) | ||
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r176 | { | ||
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r291 | if(m_axis.children().size()==0) | ||
m_axis.addToGroup(new QGraphicsLineItem()); | ||||
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r223 | for (int i = 0; i < count; ++i) { | ||
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r291 | 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()); | ||||
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r176 | } | ||
} | ||||
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r291 | void AxisItem::clear(int count) | ||
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r176 | { | ||
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r291 | QList<QGraphicsItem *> lines = m_grid.childItems(); | ||
QList<QGraphicsItem *> labels = m_labels.childItems(); | ||||
QList<QGraphicsItem *> shades = m_shades.childItems(); | ||||
QList<QGraphicsItem *> axis = m_axis.childItems(); | ||||
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r176 | |||
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r291 | for (int i = 0; i < count; ++i) { | ||
delete(lines.takeLast()); | ||||
delete(labels.takeLast()); | ||||
if(lines.size()%2) delete(shades.takeLast()); | ||||
delete(axis.takeLast()); | ||||
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r272 | } | ||
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r176 | } | ||
void AxisItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) | ||||
{ | ||||
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r291 | Q_UNUSED(painter); | ||
Q_UNUSED(option); | ||||
Q_UNUSED(widget); | ||||
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r176 | } | ||
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r393 | void AxisItem::updateItems(QVector<qreal>& oldLayout,QVector<qreal>& newLayout) | ||
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r67 | { | ||
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r393 | if(newLayout.count()==0) return; | ||
applyLayout(newLayout); | ||||
oldLayout=newLayout; | ||||
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r85 | } | ||
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r176 | |||
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r223 | void AxisItem::handleAxisUpdate(QChartAxis* axis) | ||
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r85 | { | ||
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r298 | if(m_layoutVector.count()==0) return; | ||
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r223 | if(axis->isAxisVisible()) { | ||
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r189 | setAxisOpacity(100); | ||
} | ||||
else { | ||||
setAxisOpacity(0); | ||||
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r184 | } | ||
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r223 | if(axis->isGridVisible()) { | ||
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r176 | setGridOpacity(100); | ||
} | ||||
else { | ||||
setGridOpacity(0); | ||||
} | ||||
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r85 | |||
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r365 | if(axis->labelsVisible()) | ||
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r176 | { | ||
setLabelsOpacity(100); | ||||
} | ||||
else { | ||||
setLabelsOpacity(0); | ||||
} | ||||
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r85 | |||
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r365 | if(axis->shadesVisible()) { | ||
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r223 | setShadesOpacity(axis->shadesOpacity()); | ||
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r176 | } | ||
else { | ||||
setShadesOpacity(0); | ||||
} | ||||
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r223 | setLabelsAngle(axis->labelsAngle()); | ||
setAxisPen(axis->axisPen()); | ||||
setLabelsPen(axis->labelsPen()); | ||||
setLabelsBrush(axis->labelsBrush()); | ||||
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r332 | setLabelsFont(axis->labelsFont()); | ||
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r223 | setGridPen(axis->gridPen()); | ||
setShadesPen(axis->shadesPen()); | ||||
setShadesBrush(axis->shadesBrush()); | ||||
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r176 | } | ||
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r85 | |||
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r399 | void AxisItem::handleRangeChanged(QChartAxis* axis,const QStringList& labels) | ||
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r176 | { | ||
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r291 | int diff = m_thicksList.size() - labels.size(); | ||
if(diff>0){ | ||||
clear(diff); | ||||
}else if(diff<0){ | ||||
createItems(-diff); | ||||
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r223 | } | ||
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r291 | m_thicksList=labels; | ||
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r393 | QVector<qreal> vector = calculateLayout(); | ||
updateItems(m_layoutVector,vector); | ||||
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r298 | if(diff!=0) handleAxisUpdate(axis); | ||
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r176 | } | ||
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r85 | |||
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r176 | void AxisItem::handleGeometryChanged(const QRectF& rect) | ||
{ | ||||
m_rect = rect; | ||||
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r393 | |||
if(m_thicksList.size()==0) return; | ||||
QVector<qreal> vector = calculateLayout(); | ||||
updateItems(m_layoutVector,vector); | ||||
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r176 | } | ||
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r85 | |||
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r184 | void AxisItem::setAxisOpacity(qreal opacity) | ||
{ | ||||
m_axis.setOpacity(opacity); | ||||
} | ||||
qreal AxisItem::axisOpacity() const | ||||
{ | ||||
return m_axis.opacity(); | ||||
} | ||||
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r176 | void AxisItem::setGridOpacity(qreal opacity) | ||
{ | ||||
m_grid.setOpacity(opacity); | ||||
} | ||||
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r85 | |||
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r176 | qreal AxisItem::gridOpacity() const | ||
{ | ||||
return m_grid.opacity(); | ||||
} | ||||
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r85 | |||
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r176 | void AxisItem::setLabelsOpacity(qreal opacity) | ||
{ | ||||
m_labels.setOpacity(opacity); | ||||
} | ||||
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r85 | |||
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r176 | qreal AxisItem::labelsOpacity() const | ||
{ | ||||
return m_labels.opacity(); | ||||
} | ||||
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r85 | |||
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r176 | void AxisItem::setShadesOpacity(qreal opacity) | ||
{ | ||||
m_shades.setOpacity(opacity); | ||||
} | ||||
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r85 | |||
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r176 | qreal AxisItem::shadesOpacity() const | ||
{ | ||||
return m_shades.opacity(); | ||||
} | ||||
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r67 | |||
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r176 | void AxisItem::setLabelsAngle(int angle) | ||
{ | ||||
foreach(QGraphicsItem* item , m_labels.childItems()) { | ||||
QPointF center = item->boundingRect().center(); | ||||
item->setRotation(angle); | ||||
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r145 | } | ||
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r176 | |||
m_labelsAngle=angle; | ||||
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r67 | } | ||
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r176 | void AxisItem::setLabelsPen(const QPen& pen) | ||
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r140 | { | ||
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r176 | foreach(QGraphicsItem* item , m_labels.childItems()) { | ||
static_cast<QGraphicsSimpleTextItem*>(item)->setPen(pen); | ||||
} | ||||
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r140 | } | ||
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r176 | void AxisItem::setLabelsBrush(const QBrush& brush) | ||
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r140 | { | ||
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r176 | foreach(QGraphicsItem* item , m_labels.childItems()) { | ||
static_cast<QGraphicsSimpleTextItem*>(item)->setBrush(brush); | ||||
} | ||||
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r140 | } | ||
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r176 | void AxisItem::setLabelsFont(const QFont& font) | ||
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r140 | { | ||
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r176 | foreach(QGraphicsItem* item , m_labels.childItems()) { | ||
static_cast<QGraphicsSimpleTextItem*>(item)->setFont(font); | ||||
} | ||||
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r140 | } | ||
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r176 | void AxisItem::setShadesBrush(const QBrush& brush) | ||
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r140 | { | ||
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r176 | foreach(QGraphicsItem* item , m_shades.childItems()) { | ||
static_cast<QGraphicsRectItem*>(item)->setBrush(brush); | ||||
} | ||||
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r140 | } | ||
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r176 | void AxisItem::setShadesPen(const QPen& pen) | ||
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r140 | { | ||
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r176 | foreach(QGraphicsItem* item , m_shades.childItems()) { | ||
static_cast<QGraphicsRectItem*>(item)->setPen(pen); | ||||
} | ||||
} | ||||
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r184 | void AxisItem::setAxisPen(const QPen& pen) | ||
{ | ||||
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r272 | foreach(QGraphicsItem* item , m_axis.childItems()) { | ||
static_cast<QGraphicsLineItem*>(item)->setPen(pen); | ||||
} | ||||
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r184 | } | ||
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r176 | void AxisItem::setGridPen(const QPen& pen) | ||
{ | ||||
foreach(QGraphicsItem* item , m_grid.childItems()) { | ||||
static_cast<QGraphicsLineItem*>(item)->setPen(pen); | ||||
} | ||||
} | ||||
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r393 | QVector<qreal> AxisItem::calculateLayout() const | ||
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r291 | { | ||
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r393 | QVector<qreal> points; | ||
points.resize(m_thicksList.size()); | ||||
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r291 | switch (m_type) | ||
{ | ||||
case X_AXIS: | ||||
{ | ||||
const qreal deltaX = m_rect.width()/(m_thicksList.size()-1); | ||||
for (int i = 0; i < m_thicksList.size(); ++i) { | ||||
int x = i * deltaX + m_rect.left(); | ||||
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r393 | points[i] = x; | ||
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r291 | } | ||
} | ||||
break; | ||||
case Y_AXIS: | ||||
{ | ||||
const qreal deltaY = m_rect.height()/(m_thicksList.size()-1); | ||||
for (int i = 0; i < m_thicksList.size(); ++i) { | ||||
int y = i * -deltaY + m_rect.bottom(); | ||||
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r393 | points[i] = y; | ||
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r291 | } | ||
} | ||||
break; | ||||
} | ||||
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r393 | return points; | ||
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r291 | } | ||
void AxisItem::applyLayout(const QVector<qreal>& points) | ||||
{ | ||||
Q_ASSERT(points.size() == m_thicksList.size()); | ||||
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_thicksList.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 < points.size(); ++i) { | ||||
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
lineItem->setLine(points[i], m_rect.top(), points[i], m_rect.bottom()); | ||||
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||||
labelItem->setText(m_thicksList.at(i)); | ||||
QPointF center = labelItem->boundingRect().center(); | ||||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
labelItem->setPos(points[i] - center.x(), m_rect.bottom() + label_padding); | ||||
if(i%2){ | ||||
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2)); | ||||
rectItem->setRect(points[i],m_rect.top(),points[i+1]-points[i],m_rect.height()); | ||||
} | ||||
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
lineItem->setLine(points[i],m_rect.bottom(),points[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 < points.size(); ++i) { | ||||
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
lineItem->setLine(m_rect.left() , points[i], m_rect.right(), points[i]); | ||||
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||||
labelItem->setText(m_thicksList.at(i)); | ||||
QPointF center = labelItem->boundingRect().center(); | ||||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
labelItem->setPos(m_rect.left() - labelItem->boundingRect().width() - label_padding , points[i]-center.y()); | ||||
if(i%2){ | ||||
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2)); | ||||
rectItem->setRect(m_rect.left(),points[i],m_rect.width(),points[i]-points[i+1]); | ||||
} | ||||
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
lineItem->setLine(m_rect.left()-5,points[i],m_rect.left(),points[i]); | ||||
} | ||||
} | ||||
break; | ||||
default: | ||||
qDebug()<<"Unknown axis type"; | ||||
break; | ||||
} | ||||
} | ||||
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r140 | |||
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r67 | //TODO "nice numbers algorithm" | ||
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r140 | #include "moc_axisitem_p.cpp" | ||
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r67 | |||
QTCOMMERCIALCHART_END_NAMESPACE | ||||