##// END OF EJS Templates
Optimize polar chart radius calculation a bit....
Optimize polar chart radius calculation a bit. Current algorithm still results in an occasional extra unneeded iteration, as it uses only crude approximation for radius reduction. However, any speedup gained by accurately calculating needed reduction would be very minor compared to approximations used, so it doesn't seem worth the effort to figure out the complex math. Change-Id: If670a1b058a85cd0305b93f62e6388b463bafd0d Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

File last commit:

r2433:4d17a12f375e
r2542:189023d9a551
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declarativemargins.cpp
111 lines | 2.9 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2013 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 "declarativemargins.h"
#include <QDataStream>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
/*!
\qmlclass Margins
Uncreatable type that is used to define top, bottom, left and right margins.
*/
/*!
\qmlproperty int Margins::top
The top margin.
*/
/*!
\qmlproperty int Margins::bottom
The bottom margin.
*/
/*!
\qmlproperty int Margins::left
The left margin.
*/
/*!
\qmlproperty int Margins::right
The right margin.
*/
DeclarativeMargins::DeclarativeMargins(QObject *parent) :
QObject(parent)
{
QMargins::setTop(0);
QMargins::setBottom(0);
QMargins::setLeft(0);
QMargins::setRight(0);
}
void DeclarativeMargins::setTop(int top)
{
if (top < 0) {
qWarning() << "Cannot set top margin to a negative value:" << top;
} else {
if (top != QMargins::top()) {
QMargins::setTop(top);
emit topChanged(QMargins::top(), QMargins::bottom(), QMargins::left(), QMargins::right());
}
}
}
void DeclarativeMargins::setBottom(int bottom)
{
if (bottom < 0) {
qWarning() << "Cannot set bottom margin to a negative value:" << bottom;
} else {
if (bottom != QMargins::bottom()) {
QMargins::setBottom(bottom);
emit bottomChanged(QMargins::top(), QMargins::bottom(), QMargins::left(), QMargins::right());
}
}
}
void DeclarativeMargins::setLeft(int left)
{
if (left < 0) {
qWarning() << "Cannot set left margin to a negative value:" << left;
} else {
if (left != QMargins::left()) {
QMargins::setLeft(left);
emit leftChanged(QMargins::top(), QMargins::bottom(), QMargins::left(), QMargins::right());
}
}
}
void DeclarativeMargins::setRight(int right)
{
if (right < 0) {
qWarning() << "Cannot set left margin to a negative value:" << right;
} else {
if (right != QMargins::right()) {
QMargins::setRight(right);
emit rightChanged(QMargins::top(), QMargins::bottom(), QMargins::left(), QMargins::right());
}
}
}
#include "moc_declarativemargins.cpp"
QTCOMMERCIALCHART_END_NAMESPACE