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Add pieview

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This commit is contained in:
Grégory Soutadé 2011-09-21 20:47:54 +02:00
parent ae4a0eb7ac
commit ea054b48ad
4 changed files with 714 additions and 28 deletions
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56
src/view/AccountPanel.cpp
View File

@ -52,7 +52,7 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
_tree->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
// ColorScheme* colorScheme = new ColorScheme(wxUI::categoryColors, WXSIZEOF(wxUI::categoryColors));
// _pie = new PiePlot();
_pie = new PieView;
_calendar = new QCalendarWidget(this);
_calendar->setGridVisible(false);
_calendar->setFirstDayOfWeek(Qt::Monday);
@ -78,16 +78,23 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
nbCategories = (user->GetCategoriesNumber() <= wxUI::MAX_CATEGORY) ? user->GetCategoriesNumber() : wxUI::MAX_CATEGORY;
_dataset = new QStandardItemModel(user->GetCategoriesNumber(), 2, this);
_categoriesValues = new double[user->GetCategoriesNumber()];
for(i=0; i<user->GetCategoriesNumber(); i++)
{
_categoriesValues[i] = 0.0;
_dataset->setData(_dataset->index(i, 0, QModelIndex()), _categories[i]);
_dataset->setData(_dataset->index(i, 1, QModelIndex()), 0.0);
_dataset->setData(_dataset->index(i, 0, QModelIndex()), wxUI::categoryColors[i], Qt::DecorationRole);
}
// _dataset = new CategorySimpleDataset(_categories, nbCategories);
// _dataset->AddSerie(_("Serie 1"), _categoriesValues, nbCategories);
// _dataset->SetRenderer(new CategoryRenderer(*colorScheme));
// _pie->SetDataset(_dataset);
// _pie->SetColorScheme(colorScheme);
_pie->setModel(_dataset);
_pie->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
// _pie->SetLegend(new Legend(wxBOTTOM, wxCENTER));
@ -117,7 +124,7 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
_statsGrid = new QTableWidget(this);
_statsGrid->verticalHeader()->setHidden(true);
_statsGrid->horizontalHeader()->setHidden(true);
_statsGrid->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
_statsGrid->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
// chart = new wxChartPanel(this);
// chart->SetChart(new Chart(_pie, _("Cost repartition")));
@ -143,9 +150,9 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
groupBox->setLayout(vbox);
}
// wxString modes[3] = {_("Virtual"), _("Real"), _("Check")};
// _radioMode = new wxRadioBox(this, DISPLAY_MODE_ID, _("Mode"), wxDefaultPosition, wxDefaultSize,
// 3, modes);
connect(_virtual, SIGNAL(clicked()), this, SLOT(OnModeChange()));
connect(_real, SIGNAL(clicked()), this, SLOT(OnModeChange()));
connect(_check, SIGNAL(clicked()), this, SLOT(OnModeChange()));
// _tree.SetIndent(5);
@ -167,7 +174,7 @@ AccountPanel::AccountPanel(KissCount* kiss, wxUI *parent) : KissPanel(kiss, pare
// vbox2->Add(_grid, 0, wxGROW|wxALL, 2);
hbox->addLayout(vbox2);
vbox->addWidget(_statsGrid);
// vbox->Add(chart, 0, wxALIGN_CENTER_HORIZONTAL|wxUP, 10);
vbox->addWidget(_pie);
hbox->addLayout(vbox);
ChangeUser();
@ -212,7 +219,7 @@ void AccountPanel::InitStatsGrid(User* user)
{
int i;
int nb_categories = user->GetCategoriesNumber();
DEFAULT_FONT(font);
QFont font;
if (!_statsGrid->rowCount())
{
@ -229,6 +236,7 @@ void AccountPanel::InitStatsGrid(User* user)
_statsGrid->setItem(TOTAL_CREDIT, 0, new QTableWidgetItem(_("Total Credit")));
_statsGrid->setItem(TOTAL_DEBIT, 0, new QTableWidgetItem(_("Total Debit")));
font = _statsGrid->item(TOTAL_DEBIT, 0)->font();
for(i=0; i<nb_categories; i++)
{
@ -236,13 +244,13 @@ void AccountPanel::InitStatsGrid(User* user)
{
_statsGrid->setItem(CATS_STATS+i+1, 0, new QTableWidgetItem(_categories[i]));
_statsGrid->setItem(CATS_STATS+i+1, 1, new QTableWidgetItem(""));
_statsGrid->item(CATS_STATS+i+1, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(CATS_STATS+i+1, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
}
else
{
_statsGrid->setItem(CATS_STATS+i, 0, new QTableWidgetItem(_categories[i]));
_statsGrid->setItem(CATS_STATS+i, 1, new QTableWidgetItem(""));
_statsGrid->item(CATS_STATS+i, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(CATS_STATS+i, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
}
}
@ -267,12 +275,12 @@ void AccountPanel::InitStatsGrid(User* user)
_statsGrid->item(BALANCE, 0)->setFont(font);
_statsGrid->item(BALANCE, 1)->setFont(font);
_statsGrid->item(CUR_CREDIT, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(CUR_DEBIT, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(TOTAL_CREDIT, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(TOTAL_DEBIT, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(BALANCE, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(NON_FIX, 1)->setTextAlignment(Qt::AlignRight);
_statsGrid->item(CUR_CREDIT, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_statsGrid->item(CUR_DEBIT, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_statsGrid->item(TOTAL_CREDIT, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_statsGrid->item(TOTAL_DEBIT, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_statsGrid->item(BALANCE, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_statsGrid->item(NON_FIX, 1)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_accountsGrid->resizeColumnToContents(0);
}
@ -470,9 +478,9 @@ void AccountPanel::InitAccountsGrid(User* user, int month, int year)
}
}
_accountsInitValues[it->id] = value;
_accountsGrid->item(curLine, ACCOUNT_INIT)->setTextAlignment(Qt::AlignRight);
_accountsGrid->item(curLine, ACCOUNT_CUR)->setTextAlignment(Qt::AlignRight);
_accountsGrid->item(curLine, ACCOUNT_FINAL)->setTextAlignment(Qt::AlignRight);
_accountsGrid->item(curLine, ACCOUNT_INIT)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_accountsGrid->item(curLine, ACCOUNT_CUR)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
_accountsGrid->item(curLine, ACCOUNT_FINAL)->setTextAlignment(Qt::AlignRight|Qt::AlignVCenter);
}
_accountsGrid->resizeColumnsToContents();
@ -668,8 +676,8 @@ void AccountPanel::UpdateStats()
_statsGrid->item(TOTAL_CREDIT, 1)->setText(v.sprintf("%.2lf", totalCredit));
_statsGrid->item(TOTAL_DEBIT, 1)->setText(v.sprintf("%.2lf", totalDebit));
// _statsGrid->SetCellTextColour(BALANCE, 1, (balance >= 0) ? wxColor(0x00, 0xFF, 0x00) : wxColor(0xFF, 0x00, 0x00));
_statsGrid->item(BALANCE, 1)->setText(v.sprintf("%.2lf", balance));
_statsGrid->item(BALANCE, 1)->setForeground((balance >= 0) ? QBrush(Qt::green) : QBrush(Qt::red));
for(i=0; i<user->GetCategoriesNumber(); i++)
{
@ -681,6 +689,8 @@ void AccountPanel::UpdateStats()
_statsGrid->item(CATS_STATS+i+1, 1)->setText(v.sprintf("%.2lf (%02d %%)", _categoriesValues[i], (int)percents));
else
_statsGrid->item(CATS_STATS+i, 1)->setText(v.sprintf("%.2lf (%02d %%)", _categoriesValues[i], (int)percents));
_dataset->setData(_dataset->index(i, 1, QModelIndex()), _categoriesValues[i]);
}
value = totalDebit - _categoriesValues[0];
@ -700,7 +710,7 @@ void AccountPanel::UpdateStats()
_accountsGrid->item(i, ACCOUNT_INIT)->setText(v.sprintf("%.2lf", value));
value = curAccountAmount[accountIt->id];
_accountsGrid->item(i, ACCOUNT_CUR)->setText(v.sprintf("%.2lf", value));
// _accountsGrid->SetCellTextColour(i, ACCOUNT_CUR, (value >= 0.0) ? wxColor(0x00, 0x00, 0x00) : wxColor(0xFF, 0x00, 0x00));
_accountsGrid->item(i, ACCOUNT_CUR)->setForeground((value >= 0) ? QBrush(Qt::black) : QBrush(Qt::red));
value = finalAccountAmount[accountIt->id];
_accountsGrid->item(i, ACCOUNT_FINAL)->setText(v.sprintf("%.2lf", value));
}
@ -712,7 +722,7 @@ void AccountPanel::UpdateStats()
_accountsGrid->item(i, ACCOUNT_INIT)->setText(v.sprintf("%.2lf (%.2lf)", value, value-value2));
value = curAccountAmount[accountIt->id];
_accountsGrid->item(i, ACCOUNT_CUR)->setText(v.sprintf("%.2lf (%.2lf)", value, value-value2));
// _accountsGrid->SetCellTextColour(i, ACCOUNT_CUR, (value >= 0.0) ? wxColor(0x00, 0x00, 0x00) : wxColor(0xFF, 0x00, 0x00));
_accountsGrid->item(i, ACCOUNT_CUR)->setForeground((value >= 0) ? QBrush(Qt::black) : QBrush(Qt::red));
value = finalAccountAmount[accountIt->id];
_accountsGrid->item(i, ACCOUNT_FINAL)->setText(v.sprintf("%.2lf (%.2lf)", value, value-value2));
}
@ -727,8 +737,6 @@ void AccountPanel::UpdateStats()
_statsGrid->resizeColumnToContents(1);
// _pie->DatasetChanged(_dataset);
layout();
}

11
src/view/AccountPanel.hpp
View File

@ -31,6 +31,8 @@
#include <QCalendarWidget>
#include <QTableWidget>
#include <QRadioButton>
#include <QStandardItemModel>
#include "pieview.hpp"
#include "view.hpp"
@ -59,6 +61,9 @@ public:
void ShowMonth(int month, int year);
void GenerateMonth(int month, int year);
int _curMonth, _curYear;
private slots:
void OnOperationModified();
void OnAccountModified();
void OnTreeRightClick();
@ -71,21 +76,19 @@ public:
void OnUnGroup();
void OnUpdateNextMonths();
int _curMonth, _curYear;
private:
QTreeWidget *_tree;
QCalendarWidget* _calendar;
// GridAccount* _grid;
QTableWidget* _accountsGrid, *_statsGrid;
// PiePlot* _pie;
PieView* _pie;
double *_categoriesValues;
// wxRadioBox *_radioMode;
std::map<QString, int> _categoriesIndexes;
std::vector<Operation>* _curOperations;
QString* _categories, *_accounts;
std::map<int, double> _accountsInitValues;
// CategorySimpleDataset* _dataset;
QStandardItemModel* _dataset;
int _fixCosts;
QRadioButton *_virtual, *_real, *_check;

565
src/view/pieview.cpp Normal file
View File

@ -0,0 +1,565 @@
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#include <math.h>
#include <QtGui>
#ifndef M_PI
#define M_PI 3.1415927
#endif
#include "pieview.hpp"
PieView::PieView(QWidget *parent)
: QAbstractItemView(parent)
{
horizontalScrollBar()->setRange(0, 0);
verticalScrollBar()->setRange(0, 0);
margin = 8;
totalSize = 150;
pieSize = totalSize - 2*margin;
validItems = 0;
totalValue = 0.0;
rubberBand = 0;
}
void PieView::dataChanged(const QModelIndex &topLeft,
const QModelIndex &bottomRight)
{
QAbstractItemView::dataChanged(topLeft, bottomRight);
validItems = 0;
totalValue = 0.0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
totalValue += value;
validItems++;
}
}
viewport()->update();
}
bool PieView::edit(const QModelIndex &index, EditTrigger trigger, QEvent *event)
{
if (index.column() == 0)
return QAbstractItemView::edit(index, trigger, event);
else
return false;
}
/*
Returns the item that covers the coordinate given in the view.
*/
QModelIndex PieView::indexAt(const QPoint &point) const
{
if (validItems == 0)
return QModelIndex();
// Transform the view coordinates into contents widget coordinates.
int wx = point.x() + horizontalScrollBar()->value();
int wy = point.y() + verticalScrollBar()->value();
if (wx < totalSize) {
double cx = wx - totalSize/2;
double cy = totalSize/2 - wy; // positive cy for items above the center
// Determine the distance from the center point of the pie chart.
double d = pow(pow(cx, 2) + pow(cy, 2), 0.5);
if (d == 0 || d > pieSize/2)
return QModelIndex();
// Determine the angle of the point.
double angle = (180 / M_PI) * acos(cx/d);
if (cy < 0)
angle = 360 - angle;
// Find the relevant slice of the pie.
double startAngle = 0.0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
double sliceAngle = 360*value/totalValue;
if (angle >= startAngle && angle < (startAngle + sliceAngle))
return model()->index(row, 1, rootIndex());
startAngle += sliceAngle;
}
}
} else {
double itemHeight = QFontMetrics(viewOptions().font).height();
int listItem = int((wy - margin) / itemHeight);
int validRow = 0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
if (model()->data(index).toDouble() > 0.0) {
if (listItem == validRow)
return model()->index(row, 0, rootIndex());
// Update the list index that corresponds to the next valid row.
validRow++;
}
}
}
return QModelIndex();
}
bool PieView::isIndexHidden(const QModelIndex & /*index*/) const
{
return false;
}
/*
Returns the rectangle of the item at position \a index in the
model. The rectangle is in contents coordinates.
*/
QRect PieView::itemRect(const QModelIndex &index) const
{
if (!index.isValid())
return QRect();
// Check whether the index's row is in the list of rows represented
// by slices.
QModelIndex valueIndex;
if (index.column() != 1)
valueIndex = model()->index(index.row(), 1, rootIndex());
else
valueIndex = index;
if (model()->data(valueIndex).toDouble() > 0.0) {
int listItem = 0;
for (int row = index.row()-1; row >= 0; --row) {
if (model()->data(model()->index(row, 1, rootIndex())).toDouble() > 0.0)
listItem++;
}
double itemHeight;
switch (index.column()) {
case 0:
itemHeight = QFontMetrics(viewOptions().font).height();
return QRect(margin,
//int(margin + listItem*itemHeight),
pieSize+margin*4,
totalSize - margin, int((margin + listItem*itemHeight)*2));
// return QRect(totalSize,
// int(margin + listItem*itemHeight),
// totalSize - margin, int(itemHeight));
case 1:
return viewport()->rect();
}
}
return QRect();
}
QRegion PieView::itemRegion(const QModelIndex &index) const
{
if (!index.isValid())
return QRegion();
if (index.column() != 1)
return itemRect(index);
if (model()->data(index).toDouble() <= 0.0)
return QRegion();
double startAngle = 0.0;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex sliceIndex = model()->index(row, 1, rootIndex());
double value = model()->data(sliceIndex).toDouble();
if (value > 0.0) {
double angle = 360*value/totalValue;
if (sliceIndex == index) {
QPainterPath slicePath;
slicePath.moveTo(totalSize/2, totalSize/2);
slicePath.arcTo(margin, margin, margin+pieSize, margin+pieSize,
startAngle, angle);
slicePath.closeSubpath();
return QRegion(slicePath.toFillPolygon().toPolygon());
}
startAngle += angle;
}
}
return QRegion();
}
int PieView::horizontalOffset() const
{
return horizontalScrollBar()->value();
}
void PieView::mousePressEvent(QMouseEvent *event)
{
QAbstractItemView::mousePressEvent(event);
origin = event->pos();
if (!rubberBand)
rubberBand = new QRubberBand(QRubberBand::Rectangle, viewport());
rubberBand->setGeometry(QRect(origin, QSize()));
rubberBand->show();
}
void PieView::mouseMoveEvent(QMouseEvent *event)
{
if (rubberBand)
rubberBand->setGeometry(QRect(origin, event->pos()).normalized());
QAbstractItemView::mouseMoveEvent(event);
}
void PieView::mouseReleaseEvent(QMouseEvent *event)
{
QAbstractItemView::mouseReleaseEvent(event);
if (rubberBand)
rubberBand->hide();
viewport()->update();
}
QModelIndex PieView::moveCursor(QAbstractItemView::CursorAction cursorAction,
Qt::KeyboardModifiers /*modifiers*/)
{
QModelIndex current = currentIndex();
switch (cursorAction) {
case MoveLeft:
case MoveUp:
if (current.row() > 0)
current = model()->index(current.row() - 1, current.column(),
rootIndex());
else
current = model()->index(0, current.column(), rootIndex());
break;
case MoveRight:
case MoveDown:
if (current.row() < rows(current) - 1)
current = model()->index(current.row() + 1, current.column(),
rootIndex());
else
current = model()->index(rows(current) - 1, current.column(),
rootIndex());
break;
default:
break;
}
viewport()->update();
return current;
}
void PieView::paintEvent(QPaintEvent *event)
{
QItemSelectionModel *selections = selectionModel();
QStyleOptionViewItem option = viewOptions();
QStyle::State state = option.state;
QBrush background = option.palette.base();
QPen foreground(option.palette.color(QPalette::WindowText));
QPen textPen(option.palette.color(QPalette::Text));
QPen highlightedPen(option.palette.color(QPalette::HighlightedText));
QPainter painter(viewport());
painter.setRenderHint(QPainter::Antialiasing);
painter.fillRect(event->rect(), background);
painter.setPen(foreground);
// Viewport rectangles
QRect pieRect = QRect(margin, margin, pieSize, pieSize);
QPoint keyPoint = QPoint(totalSize - horizontalScrollBar()->value(),
margin - verticalScrollBar()->value());
if (validItems > 0) {
painter.save();
painter.translate(pieRect.x() - horizontalScrollBar()->value(),
pieRect.y() - verticalScrollBar()->value());
painter.drawEllipse(0, 0, pieSize, pieSize);
double startAngle = 0.0;
int row;
for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
double angle = 360*value/totalValue;
QModelIndex colorIndex = model()->index(row, 0, rootIndex());
QColor color = QColor(model()->data(colorIndex,
Qt::DecorationRole).toString());
if (currentIndex() == index)
painter.setBrush(QBrush(color, Qt::Dense4Pattern));
else if (selections->isSelected(index))
painter.setBrush(QBrush(color, Qt::Dense3Pattern));
else
painter.setBrush(QBrush(color));
painter.drawPie(0, 0, pieSize, pieSize, int(startAngle*16),
int(angle*16));
startAngle += angle;
}
}
painter.restore();
int keyNumber = 0;
for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
QModelIndex labelIndex = model()->index(row, 0, rootIndex());
QStyleOptionViewItem option = viewOptions();
option.rect = visualRect(labelIndex);
if (selections->isSelected(labelIndex))
option.state |= QStyle::State_Selected;
if (currentIndex() == labelIndex)
option.state |= QStyle::State_HasFocus;
itemDelegate()->paint(&painter, option, labelIndex);
keyNumber++;
}
}
}
}
void PieView::resizeEvent(QResizeEvent * /* event */)
{
updateGeometries();
}
int PieView::rows(const QModelIndex &index) const
{
return model()->rowCount(model()->parent(index));
}
void PieView::rowsInserted(const QModelIndex &parent, int start, int end)
{
for (int row = start; row <= end; ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
totalValue += value;
validItems++;
}
}
QAbstractItemView::rowsInserted(parent, start, end);
}
void PieView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
{
for (int row = start; row <= end; ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
totalValue -= value;
validItems--;
}
}
QAbstractItemView::rowsAboutToBeRemoved(parent, start, end);
}
void PieView::scrollContentsBy(int dx, int dy)
{
viewport()->scroll(dx, dy);
}
void PieView::scrollTo(const QModelIndex &index, ScrollHint)
{
QRect area = viewport()->rect();
QRect rect = visualRect(index);
if (rect.left() < area.left())
horizontalScrollBar()->setValue(
horizontalScrollBar()->value() + rect.left() - area.left());
else if (rect.right() > area.right())
horizontalScrollBar()->setValue(
horizontalScrollBar()->value() + qMin(
rect.right() - area.right(), rect.left() - area.left()));
if (rect.top() < area.top())
verticalScrollBar()->setValue(
verticalScrollBar()->value() + rect.top() - area.top());
else if (rect.bottom() > area.bottom())
verticalScrollBar()->setValue(
verticalScrollBar()->value() + qMin(
rect.bottom() - area.bottom(), rect.top() - area.top()));
update();
}
/*
Find the indices corresponding to the extent of the selection.
*/
void PieView::setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command)
{
// Use content widget coordinates because we will use the itemRegion()
// function to check for intersections.
QRect contentsRect = rect.translated(
horizontalScrollBar()->value(),
verticalScrollBar()->value()).normalized();
int rows = model()->rowCount(rootIndex());
int columns = model()->columnCount(rootIndex());
QModelIndexList indexes;
for (int row = 0; row < rows; ++row) {
for (int column = 0; column < columns; ++column) {
QModelIndex index = model()->index(row, column, rootIndex());
QRegion region = itemRegion(index);
if (!region.intersect(contentsRect).isEmpty())
indexes.append(index);
}
}
if (indexes.size() > 0) {
int firstRow = indexes[0].row();
int lastRow = indexes[0].row();
int firstColumn = indexes[0].column();
int lastColumn = indexes[0].column();
for (int i = 1; i < indexes.size(); ++i) {
firstRow = qMin(firstRow, indexes[i].row());
lastRow = qMax(lastRow, indexes[i].row());
firstColumn = qMin(firstColumn, indexes[i].column());
lastColumn = qMax(lastColumn, indexes[i].column());
}
QItemSelection selection(
model()->index(firstRow, firstColumn, rootIndex()),
model()->index(lastRow, lastColumn, rootIndex()));
selectionModel()->select(selection, command);
} else {
QModelIndex noIndex;
QItemSelection selection(noIndex, noIndex);
selectionModel()->select(selection, command);
}
update();
}
void PieView::updateGeometries()
{
horizontalScrollBar()->setPageStep(viewport()->width());
horizontalScrollBar()->setRange(0, qMax(0, totalSize - viewport()->width()));
verticalScrollBar()->setPageStep(viewport()->height());
verticalScrollBar()->setRange(0, qMax(0, 2*totalSize - viewport()->height()));
}
int PieView::verticalOffset() const
{
return verticalScrollBar()->value();
}
/*
Returns the position of the item in viewport coordinates.
*/
QRect PieView::visualRect(const QModelIndex &index) const
{
QRect rect = itemRect(index);
if (rect.isValid())
return QRect(rect.left() - horizontalScrollBar()->value(),
rect.top() - verticalScrollBar()->value(),
rect.width(), rect.height());
else
return rect;
}
/*
Returns a region corresponding to the selection in viewport coordinates.
*/
QRegion PieView::visualRegionForSelection(const QItemSelection &selection) const
{
int ranges = selection.count();
if (ranges == 0)
return QRect();
QRegion region;
for (int i = 0; i < ranges; ++i) {
QItemSelectionRange range = selection.at(i);
for (int row = range.top(); row <= range.bottom(); ++row) {
for (int col = range.left(); col <= range.right(); ++col) {
QModelIndex index = model()->index(row, col, rootIndex());
region += visualRect(index);
}
}
}
return region;
}

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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PIEVIEW_H
#define PIEVIEW_H
#include <QAbstractItemView>
#include <QFont>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QModelIndex>
#include <QRect>
#include <QSize>
#include <QPoint>
#include <QWidget>
class QRubberBand;
class PieView : public QAbstractItemView
{
Q_OBJECT
public:
PieView(QWidget *parent = 0);
QRect visualRect(const QModelIndex &index) const;
void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible);
QModelIndex indexAt(const QPoint &point) const;
protected slots:
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
void rowsInserted(const QModelIndex &parent, int start, int end);
void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
protected:
bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event);
QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
Qt::KeyboardModifiers modifiers);
int horizontalOffset() const;
int verticalOffset() const;
bool isIndexHidden(const QModelIndex &index) const;
void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
void scrollContentsBy(int dx, int dy);
QRegion visualRegionForSelection(const QItemSelection &selection) const;
private:
QRect itemRect(const QModelIndex &item) const;
QRegion itemRegion(const QModelIndex &index) const;
int rows(const QModelIndex &index = QModelIndex()) const;
void updateGeometries();
int margin;
int totalSize;
int pieSize;
int validItems;
double totalValue;
QPoint origin;
QRubberBand *rubberBand;
};
#endif