chartcategoriesaxisy.cpp
120 lines
| 3.8 KiB
| text/x-c
|
CppLexer
Marek Rosa
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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 "chartcategoriesaxisy_p.h" | ||||
#include "chartpresenter_p.h" | ||||
#include "chartanimator_p.h" | ||||
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r1655 | #include "qbarcategoriesaxis.h" | ||
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r1555 | #include <QGraphicsLayout> | ||
#include <QFontMetrics> | ||||
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r1613 | #include <QBarCategoriesAxis> | ||
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r1555 | |||
static int label_padding = 5; | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
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r1655 | ChartCategoriesAxisY::ChartCategoriesAxisY(QBarCategoriesAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter), | ||
m_categoriesAxis(axis) | ||||
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r1555 | { | ||
} | ||||
ChartCategoriesAxisY::~ChartCategoriesAxisY() | ||||
{ | ||||
} | ||||
QVector<qreal> ChartCategoriesAxisY::calculateLayout() const | ||||
{ | ||||
Q_ASSERT(m_ticksCount>=2); | ||||
QVector<qreal> points; | ||||
points.resize(m_ticksCount); | ||||
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r1561 | const qreal deltaY = m_rect.height()/(m_ticksCount-1); | ||
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r1555 | for (int i = 0; i < m_ticksCount; ++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 ChartCategoriesAxisY::updateGeometry() | ||||
{ | ||||
const QVector<qreal>& layout = ChartAxis::layout(); | ||||
m_minWidth = 0; | ||||
m_minHeight = 0; | ||||
if(layout.isEmpty()) return; | ||||
QStringList ticksList; | ||||
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r1577 | createCategoryLabels(ticksList,m_min,m_max,m_categoriesAxis->categories()); | ||
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r1555 | |||
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()); | ||||
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0)); | ||||
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r1655 | lineItem->setLine(m_rect.left() , m_rect.top(), m_rect.left(), m_rect.bottom()); | ||
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r1555 | |||
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r1640 | for (int i = 0; i < layout.size(); ++i) { | ||
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r1555 | QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i)); | ||
sauimone
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r1682 | 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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r1640 | if(i>=1){ | ||
labelItem->setText(ticksList.at(i-1)); | ||||
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r1577 | const QRectF& rect = labelItem->boundingRect(); | ||
QPointF center = rect.center(); | ||||
labelItem->setTransformOriginPoint(center.x(), center.y()); | ||||
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r1655 | labelItem->setPos(m_rect.left() - rect.width() - label_padding , layout[i] - (layout[i] - layout[i-1])/2 -center.y()); | ||
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r1577 | m_minWidth+=rect.width(); | ||
m_minHeight=qMax(rect.height()+label_padding,m_minHeight); | ||||
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r1640 | }else{ | ||
labelItem->setVisible(false); | ||||
} | ||||
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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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r1655 | 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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r1655 | lineItem->setLine(m_rect.left()-5,layout[i],m_rect.left(),layout[i]); | ||
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r1555 | } | ||
} | ||||
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r1643 | |||
void ChartCategoriesAxisY::handleAxisUpdated() | ||||
{ | ||||
if(m_categoriesAxis->categories()!=m_categories) | ||||
{ | ||||
m_categories=m_categoriesAxis->categories(); | ||||
if(ChartAxis::layout().count()==m_categories.size()+1) updateGeometry(); | ||||
} | ||||
ChartAxis::handleAxisUpdated(); | ||||
} | ||||
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r1555 | QTCOMMERCIALCHART_END_NAMESPACE | ||