chartaxisy.cpp
129 lines
| 4.3 KiB
| text/x-c
|
CppLexer
|
r1241 | /**************************************************************************** | ||
** | ||||
** 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 "chartaxisy_p.h" | ||||
|
r1541 | #include "qabstractaxis.h" | ||
|
r1241 | #include "qaxiscategories_p.h" | ||
#include "chartpresenter_p.h" | ||||
#include "chartanimator_p.h" | ||||
|
r1534 | #include <QGraphicsLayout> | ||
#include <QFontMetrics> | ||||
#include <QDebug> | ||||
|
r1241 | |||
static int label_padding = 5; | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
|
r1541 | ChartAxisY::ChartAxisY(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter) | ||
|
r1241 | { | ||
} | ||||
ChartAxisY::~ChartAxisY() | ||||
{ | ||||
} | ||||
QVector<qreal> ChartAxisY::calculateLayout() const | ||||
{ | ||||
Q_ASSERT(m_ticksCount>=2); | ||||
QVector<qreal> points; | ||||
points.resize(m_ticksCount); | ||||
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; | ||||
} | ||||
return points; | ||||
} | ||||
void ChartAxisY::updateGeometry() | ||||
{ | ||||
const QVector<qreal> &layout = ChartAxis::layout(); | ||||
|
r1534 | m_minWidth = 0; | ||
m_minHeight = 0; | ||||
if(layout.isEmpty()) return; | ||||
|
r1241 | |||
QStringList ticksList; | ||||
bool categories = createLabels(ticksList,m_min,m_max,layout.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() == ticksList.size()); | ||||
Q_ASSERT(layout.size() == ticksList.size()); | ||||
|
r1534 | qreal height = 2*m_rect.bottom(); | ||
|
r1241 | |||
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)); | ||||
if (!categories || i<1) { | ||||
labelItem->setText(ticksList.at(i)); | ||||
const QRectF& rect = labelItem->boundingRect(); | ||||
|
r1534 | |||
|
r1241 | QPointF center = rect.center(); | ||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y()); | ||||
|
r1534 | |||
if(labelItem->pos().y()+rect.height()>height) { | ||||
labelItem->setVisible(false); | ||||
lineItem->setVisible(false); | ||||
} | ||||
else { | ||||
labelItem->setVisible(true); | ||||
lineItem->setVisible(true); | ||||
height=labelItem->pos().y(); | ||||
} | ||||
m_minWidth=qMax(rect.width()+label_padding,m_minWidth); | ||||
m_minHeight+=rect.height(); | ||||
|
r1241 | } | ||
else { | ||||
labelItem->setText(ticksList.at(i)); | ||||
const QRectF& rect = labelItem->boundingRect(); | ||||
|
r1534 | m_minWidth=qMax(rect.width(),m_minWidth); | ||
m_minHeight+=rect.height(); | ||||
|
r1241 | QPointF center = rect.center(); | ||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i] - (layout[i] - layout[i-1])/2 -center.y()); | ||||
} | ||||
if ((i+1)%2 && i>1) { | ||||
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); | ||||
rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i-1]-layout[i]); | ||||
} | ||||
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]); | ||||
} | ||||
} | ||||
|
r1534 | |||
|
r1241 | QTCOMMERCIALCHART_END_NAMESPACE | ||