chartvaluesaxisy.cpp
128 lines
| 4.0 KiB
| text/x-c
|
CppLexer
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r1555 | /**************************************************************************** | ||
** | ||||
** 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 "chartvaluesaxisy_p.h" | ||||
#include "qabstractaxis.h" | ||||
#include "chartpresenter_p.h" | ||||
#include "chartanimator_p.h" | ||||
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r1698 | #include "qvaluesaxis.h" | ||
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r1555 | #include <QGraphicsLayout> | ||
#include <QDebug> | ||||
#include <QFontMetrics> | ||||
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r1561 | #include <cmath> | ||
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r1555 | |||
static int label_padding = 5; | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r1698 | ChartValuesAxisY::ChartValuesAxisY(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter), | ||
m_tickCount(0) | ||||
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r1555 | { | ||
} | ||||
ChartValuesAxisY::~ChartValuesAxisY() | ||||
{ | ||||
} | ||||
QVector<qreal> ChartValuesAxisY::calculateLayout() const | ||||
{ | ||||
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r1698 | Q_ASSERT(m_tickCount>=2); | ||
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r1555 | |||
QVector<qreal> points; | ||||
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r1698 | points.resize(m_tickCount); | ||
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r1555 | |||
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r1698 | const qreal deltaY = m_rect.height()/(m_tickCount-1); | ||
for (int i = 0; i < m_tickCount; ++i) { | ||||
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r1561 | int y = i * -deltaY + m_rect.bottom(); | ||
points[i] = y; | ||||
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r1555 | } | ||
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r1561 | |||
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r1555 | return points; | ||
} | ||||
void ChartValuesAxisY::updateGeometry() | ||||
{ | ||||
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r1561 | const QVector<qreal> &layout = ChartAxis::layout(); | ||
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r1555 | m_minWidth = 0; | ||
m_minHeight = 0; | ||||
if(layout.isEmpty()) return; | ||||
QStringList ticksList; | ||||
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r1577 | createNumberLabels(ticksList,m_min,m_max,layout.size()); | ||
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r1555 | |||
QList<QGraphicsItem *> lines = m_grid->childItems(); | ||||
QList<QGraphicsItem *> labels = m_labels->childItems(); | ||||
QList<QGraphicsItem *> shades = m_shades->childItems(); | ||||
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r1729 | QList<QGraphicsItem *> axis = m_arrow->childItems(); | ||
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r1555 | |||
Q_ASSERT(labels.size() == ticksList.size()); | ||||
Q_ASSERT(layout.size() == ticksList.size()); | ||||
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r1561 | qreal height = 2*m_rect.bottom(); | ||
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r1555 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||
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r1561 | lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom()); | ||
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r1555 | |||
for (int i = 0; i < layout.size(); ++i) { | ||||
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||||
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r1561 | lineItem->setLine(m_rect.left() , layout[i], m_rect.right(), layout[i]); | ||
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r1555 | QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i)); | ||
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r1561 | |||
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r1555 | labelItem->setText(ticksList.at(i)); | ||
const QRectF& rect = labelItem->boundingRect(); | ||||
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r1561 | |||
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r1555 | QPointF center = rect.center(); | ||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
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r1561 | labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i]-center.y()); | ||
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r1555 | |||
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r1561 | if(labelItem->pos().y()+rect.height()>height) { | ||
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r1555 | labelItem->setVisible(false); | ||
lineItem->setVisible(false); | ||||
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r1561 | } | ||
else { | ||||
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r1555 | labelItem->setVisible(true); | ||
lineItem->setVisible(true); | ||||
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r1561 | height=labelItem->pos().y(); | ||
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r1555 | } | ||
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r1561 | |||
m_minWidth=qMax(rect.width()+label_padding,m_minWidth); | ||||
m_minHeight+=rect.height(); | ||||
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r1555 | |||
if ((i+1)%2 && i>1) { | ||||
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1)); | ||||
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r1561 | rectItem->setRect(m_rect.left(),layout[i],m_rect.width(),layout[i-1]-layout[i]); | ||
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r1555 | } | ||
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1)); | ||||
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r1561 | lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]); | ||
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r1555 | } | ||
} | ||||
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r1698 | void ChartValuesAxisY::handleAxisUpdated() | ||
{ | ||||
//TODO:: fix this | ||||
QValuesAxis* axis = qobject_cast<QValuesAxis*>(m_chartAxis); | ||||
m_tickCount = axis->ticksCount(); | ||||
ChartAxis::handleAxisUpdated(); | ||||
} | ||||
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r1555 | QTCOMMERCIALCHART_END_NAMESPACE | ||