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// Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qspritegrid.h"
#include "qspritegrid_p.h"
#include <Qt3DRender/qabstracttexture.h>
QT_BEGIN_NAMESPACE
namespace Qt3DExtras {
using namespace Qt3DCore;
QSpriteGridPrivate::QSpriteGridPrivate()
: QAbstractSpriteSheetPrivate()
, m_numColumns(1)
, m_numRows(1)
{
}
int QSpriteGridPrivate::maxIndex() const
{
return m_numColumns * m_numRows - 1;
}
void QSpriteGridPrivate::updateSizes()
{
Q_Q(QSpriteGrid);
if (m_texture && m_numColumns && m_numRows) {
m_textureSize = QSize(m_texture->width(), m_texture->height());
m_cellSize = QSizeF((float) m_texture->width() / m_numColumns, (float) m_texture->height() / m_numRows);
} else {
m_textureSize = QSize();
m_cellSize = QSizeF();
}
if (m_cellSize.isEmpty() || m_numColumns == 0 || m_numRows == 0) {
if (m_currentIndex != -1) {
m_currentIndex = -1;
emit q->currentIndexChanged(m_currentIndex);
}
m_textureTransform.setToIdentity();
emit q->textureTransformChanged(m_textureTransform);
return;
}
if (m_currentIndex == -1) {
m_currentIndex = 0;
emit q->currentIndexChanged(m_currentIndex);
}
updateTransform();
}
void QSpriteGridPrivate::updateTransform()
{
Q_Q(QSpriteGrid);
const float xScale = (float) m_cellSize.width() / (float) m_textureSize.width();
const float yScale = (float) m_cellSize.height() / (float) m_textureSize.height();
const int currentRow = m_currentIndex / m_numColumns;
const int currentColumn = m_currentIndex % m_numColumns;
const float xTranslate = currentColumn * xScale;
const float yTranslate = currentRow * yScale;
m_textureTransform.setToIdentity();
m_textureTransform(0, 0) = xScale;
m_textureTransform(1, 1) = yScale;
m_textureTransform(0, 2) = xTranslate;
m_textureTransform(1, 2) = yTranslate;
emit q->textureTransformChanged(m_textureTransform);
}
/*!
Constructs a new QSpriteGrid instance with parent object \a parent.
*/
QSpriteGrid::QSpriteGrid(QNode *parent)
: QAbstractSpriteSheet(*new QSpriteGridPrivate, parent)
{
}
QSpriteGrid::~QSpriteGrid()
{
}
/*!
\property Qt3DExtras::QSpriteGrid::rows
\brief Holds the number of rows in the sprite grid.
Specifies how many rows of sprites the sprite sheet texture contains.
The default value is 1.
*/
int QSpriteGrid::rows() const
{
Q_D(const QSpriteGrid);
return d->m_numRows;
}
void QSpriteGrid::setRows(int rows)
{
Q_D(QSpriteGrid);
if (d->m_numRows != rows) {
d->m_numRows = rows;
d->updateSizes();
emit rowsChanged(rows);
}
}
/*!
\property Qt3DExtras::QSpriteGrid::columns
\brief Holds the number of columns in the sprite grid.
Specifies how many columns of sprites the sprite sheet texture contains.
The default value is 1.
*/
int QSpriteGrid::columns() const
{
Q_D(const QSpriteGrid);
return d->m_numColumns;
}
void QSpriteGrid::setColumns(int columns)
{
Q_D(QSpriteGrid);
if (d->m_numColumns != columns) {
d->m_numColumns = columns;
d->updateSizes();
emit columnsChanged(columns);
}
}
} // namespace Qt3DExtras
QT_END_NAMESPACE
#include "moc_qspritegrid.cpp"