grid.cpp
310 lines
| 8.9 KiB
| text/x-c
|
CppLexer
|
r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** Commercial License Usage | ||||
** Licensees holding valid commercial Qt licenses may use this file in | ||||
** accordance with the commercial license agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and The Qt Company. For licensing terms | ||||
** and conditions see https://www.qt.io/terms-conditions. For further | ||||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include "grid.h" | ||||
#include "charts.h" | ||||
#include <QtCharts/QChart> | ||||
#include <QtWidgets/QGraphicsGridLayout> | ||||
#include <QtWidgets/QGraphicsSceneMouseEvent> | ||||
#include <QtCore/QDebug> | ||||
Grid::Grid(int size, QGraphicsItem *parent) | ||||
: QGraphicsWidget(parent), | ||||
m_listCount(3), | ||||
m_valueMax(10), | ||||
m_valueCount(7), | ||||
m_size(size), | ||||
m_dataTable(Model::generateRandomData(m_listCount, m_valueMax, m_valueCount)), | ||||
m_state(NoState), | ||||
m_currentState(NoState), | ||||
m_rubberBand(new QGraphicsRectItem()), | ||||
m_gridLayout(new QGraphicsGridLayout()) | ||||
{ | ||||
setLayout(m_gridLayout); | ||||
m_rubberBand->setParentItem(this); | ||||
m_rubberBand->setVisible(false); | ||||
m_rubberBand->setZValue(2); | ||||
} | ||||
Grid::~Grid() | ||||
{ | ||||
} | ||||
void Grid::createCharts(const QString &category) | ||||
{ | ||||
clear(); | ||||
QChart *qchart(0); | ||||
Charts::ChartList list = Charts::chartList(); | ||||
if (category.isEmpty()) { | ||||
for (int i = 0; i < m_size * m_size; ++i) { | ||||
QChart *chart = new QChart(); | ||||
chart->setTitle(QObject::tr("Empty")); | ||||
m_gridLayout->addItem(chart, i / m_size, i % m_size); | ||||
m_chartHash[chart] = i; | ||||
m_chartHashRev[i] = chart; | ||||
} | ||||
} else { | ||||
int j = 0; | ||||
for (int i = 0; i < list.size(); ++i) { | ||||
Chart *chart = list.at(i); | ||||
if (chart->category() == category && j < m_size * m_size) { | ||||
qchart = list.at(i)->createChart(m_dataTable); | ||||
m_gridLayout->addItem(qchart, j / m_size, j % m_size); | ||||
m_chartHash[qchart] = j; | ||||
m_chartHashRev[j] = qchart; | ||||
j++; | ||||
} | ||||
} | ||||
for (; j < m_size * m_size; ++j) { | ||||
qchart = new QChart(); | ||||
qchart->setTitle(QObject::tr("Empty")); | ||||
m_gridLayout->addItem(qchart, j / m_size, j % m_size); | ||||
m_chartHash[qchart] = j; | ||||
m_chartHashRev[j] = qchart; | ||||
} | ||||
} | ||||
m_gridLayout->activate(); | ||||
} | ||||
void Grid::createCharts(const QString &category, const QString &subcategory, const QString &name) | ||||
{ | ||||
clear(); | ||||
QChart *qchart(0); | ||||
Charts::ChartList list = Charts::chartList(); | ||||
Chart *chart; | ||||
//find chart | ||||
for (int i = 0; i < list.size(); ++i) { | ||||
chart = list.at(i); | ||||
if (chart->category() == category && | ||||
chart->subCategory() == subcategory && | ||||
chart->name() == name) { | ||||
break; | ||||
} | ||||
chart = 0; | ||||
} | ||||
//create charts | ||||
for (int j = 0; j < m_size * m_size; ++j) { | ||||
if(!chart){ | ||||
qchart = new QChart(); | ||||
}else{ | ||||
qchart = chart->createChart(m_dataTable); | ||||
} | ||||
qchart->setTitle(QObject::tr("Empty")); | ||||
m_gridLayout->addItem(qchart, j / m_size, j % m_size); | ||||
m_chartHash[qchart] = j; | ||||
m_chartHashRev[j] = qchart; | ||||
} | ||||
m_gridLayout->activate(); | ||||
} | ||||
void Grid::clear() | ||||
{ | ||||
int count = m_gridLayout->count(); | ||||
for (int i = 0; i < count; ++i) | ||||
m_gridLayout->removeAt(0); | ||||
qDeleteAll(m_chartHash.keys()); | ||||
m_chartHash.clear(); | ||||
m_chartHashRev.clear(); | ||||
} | ||||
QList<QChart *> Grid::charts() | ||||
{ | ||||
return m_chartHash.keys(); | ||||
} | ||||
void Grid::setState(State state) | ||||
{ | ||||
m_state = state; | ||||
} | ||||
void Grid::setSize(int size) | ||||
{ | ||||
if (m_size != size) { | ||||
//remove old; | ||||
int count = m_gridLayout->count(); | ||||
for (int i = 0; i < count; ++i) { | ||||
m_gridLayout->removeAt(0); | ||||
} | ||||
QChart* qchart = 0; | ||||
int j = 0; | ||||
for (; j < size * size; ++j) { | ||||
qchart = m_chartHashRev[j]; | ||||
if (!qchart){ | ||||
qchart = new QChart(); | ||||
qchart->setTitle(QObject::tr("Empty")); | ||||
} | ||||
m_chartHash[qchart] = j; | ||||
m_chartHashRev[j] = qchart; | ||||
m_gridLayout->addItem(qchart, j / size, j % size); | ||||
} | ||||
//delete rest | ||||
while (j < m_size * m_size) { | ||||
QChart* qchart = m_chartHashRev.take(j); | ||||
delete(qchart); | ||||
m_chartHash.remove(qchart); | ||||
j++; | ||||
} | ||||
m_size = size; | ||||
} | ||||
} | ||||
void Grid::setRubberPen(const QPen &pen) | ||||
{ | ||||
m_rubberBand->setPen(pen); | ||||
} | ||||
void Grid::replaceChart(QChart *oldChart, Chart *newChart) | ||||
{ | ||||
int index = m_chartHash[oldChart]; | ||||
//not in 4.7.2 m_baseLayout->removeItem(qchart); | ||||
for (int i = 0; i < m_gridLayout->count(); ++i) { | ||||
if (m_gridLayout->itemAt(i) == oldChart) { | ||||
m_gridLayout->removeAt(i); | ||||
break; | ||||
} | ||||
} | ||||
m_chartHash.remove(oldChart); | ||||
m_chartHashRev.remove(index); | ||||
QChart *chart = newChart->createChart(m_dataTable); | ||||
m_gridLayout->addItem(chart, index / m_size, index % m_size); | ||||
m_chartHash[chart] = index; | ||||
m_chartHashRev[index] = chart; | ||||
delete oldChart; | ||||
} | ||||
void Grid::mousePressEvent(QGraphicsSceneMouseEvent *event) | ||||
{ | ||||
if (event->button() == Qt::LeftButton) { | ||||
m_origin = event->pos(); | ||||
m_currentState = NoState; | ||||
foreach (QChart *chart, charts()) { | ||||
QRectF geometryRect = chart->geometry(); | ||||
QRectF plotArea = chart->plotArea(); | ||||
plotArea.translate(geometryRect.topLeft()); | ||||
if (plotArea.contains(m_origin)) { | ||||
m_currentState = m_state; | ||||
if (m_currentState == NoState) emit chartSelected(chart); | ||||
break; | ||||
} | ||||
} | ||||
if (m_currentState == ZoomState) { | ||||
m_rubberBand->setRect(QRectF(m_origin, QSize())); | ||||
m_rubberBand->setVisible(true); | ||||
} | ||||
event->accept(); | ||||
} | ||||
if (event->button() == Qt::RightButton) { | ||||
m_origin = event->pos(); | ||||
m_currentState = m_state; | ||||
} | ||||
} | ||||
void Grid::mouseMoveEvent(QGraphicsSceneMouseEvent *event) | ||||
{ | ||||
if (m_currentState != NoState) { | ||||
foreach (QChart *chart, charts()) { | ||||
QRectF geometryRect = chart->geometry(); | ||||
QRectF plotArea = chart->plotArea(); | ||||
plotArea.translate(geometryRect.topLeft()); | ||||
if (plotArea.contains(m_origin)) { | ||||
if (m_currentState == ScrollState) { | ||||
QPointF delta = m_origin - event->pos(); | ||||
chart->scroll(delta.x(), -delta.y()); | ||||
} | ||||
if (m_currentState == ZoomState && plotArea.contains(event->pos())) | ||||
m_rubberBand->setRect(QRectF(m_origin, event->pos()).normalized()); | ||||
break; | ||||
} | ||||
} | ||||
if (m_currentState == ScrollState) | ||||
m_origin = event->pos(); | ||||
event->accept(); | ||||
} | ||||
} | ||||
void Grid::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) | ||||
{ | ||||
if (event->button() == Qt::LeftButton) { | ||||
if (m_currentState == ZoomState) { | ||||
m_rubberBand->setVisible(false); | ||||
foreach (QChart *chart, charts()) { | ||||
QRectF geometryRect = chart->geometry(); | ||||
QRectF plotArea = chart->plotArea(); | ||||
plotArea.translate(geometryRect.topLeft()); | ||||
if (plotArea.contains(m_origin)) { | ||||
QRectF rect = m_rubberBand->rect(); | ||||
rect.translate(-geometryRect.topLeft()); | ||||
chart->zoomIn(rect); | ||||
break; | ||||
} | ||||
} | ||||
} | ||||
m_currentState = NoState; | ||||
event->accept(); | ||||
} | ||||
if (event->button() == Qt::RightButton) { | ||||
if (m_currentState == ZoomState) { | ||||
foreach (QChart *chart, charts()) { | ||||
QRectF geometryRect = chart->geometry(); | ||||
QRectF plotArea = chart->plotArea(); | ||||
plotArea.translate(geometryRect.topLeft()); | ||||
if (plotArea.contains(m_origin)) { | ||||
chart->zoomOut(); | ||||
break; | ||||
} | ||||
} | ||||
} | ||||
} | ||||
} | ||||