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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 "qspritesheet.h"
#include "qspritesheetitem.h"
#include "qspritesheet_p.h"
#include <Qt3DRender/qabstracttexture.h>
QT_BEGIN_NAMESPACE
using namespace Qt3DCore;
namespace Qt3DExtras {
QSpriteSheetPrivate::QSpriteSheetPrivate()
: QAbstractSpriteSheetPrivate()
{
}
int QSpriteSheetPrivate::maxIndex() const
{
return m_sprites.size() - 1;
}
void QSpriteSheetPrivate::updateSizes()
{
Q_Q(QSpriteSheet);
if (m_texture)
m_textureSize = QSize(m_texture->width(), m_texture->height());
else
m_textureSize = QSize();
if (m_textureSize.isEmpty() || m_sprites.isEmpty()) {
if (m_currentIndex != -1) {
m_currentIndex = -1;
emit q->currentIndexChanged(m_currentIndex);
}
m_textureTransform.setToIdentity();
emit q->textureTransformChanged(m_textureTransform);
return;
}
if (m_currentIndex < 0 || m_currentIndex >= m_sprites.size()) {
m_currentIndex = 0;
emit q->currentIndexChanged(m_currentIndex);
}
updateTransform();
}
void QSpriteSheetPrivate::updateTransform()
{
Q_Q(QSpriteSheet);
if (m_currentIndex < 0 || m_currentIndex >= m_sprites.size())
return;
const QSpriteSheetItem *r = m_sprites.at(m_currentIndex);
const float xScale = static_cast<float>(r->width()) / static_cast<float>(m_textureSize.width());
const float yScale = static_cast<float>(r->height()) / static_cast<float>(m_textureSize.height());
const float xTranslate = static_cast<float>(r->x()) / static_cast<float>(m_textureSize.width());
const float yTranslate = static_cast<float>(r->y()) / static_cast<float>(m_textureSize.height());
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 QSpriteSheet instance with parent object \a parent.
*/
QSpriteSheet::QSpriteSheet(QNode *parent)
: QAbstractSpriteSheet(*new QSpriteSheetPrivate, parent)
{
}
QSpriteSheet::~QSpriteSheet()
{
}
QList<QSpriteSheetItem *> QSpriteSheet::sprites() const
{
Q_D(const QSpriteSheet);
return d->m_sprites;
}
QSpriteSheetItem *QSpriteSheet::addSprite(int x, int y, int width, int height)
{
QSpriteSheetItem *item = new QSpriteSheetItem(this);
item->setX(x);
item->setX(y);
item->setWidth(width);
item->setHeight(height);
addSprite(item);
return item;
}
void QSpriteSheet::addSprite(QSpriteSheetItem *sprite)
{
Q_ASSERT(sprite);
Q_D(QSpriteSheet);
if (!d->m_sprites.contains(sprite)) {
d->m_sprites << sprite;
// Ensures proper bookkeeping
d->registerDestructionHelper(sprite, &QSpriteSheet::removeSprite, d->m_sprites);
if (!sprite->parent())
sprite->setParent(this);
emit spritesChanged(d->m_sprites);
d->updateSizes();
}
}
void QSpriteSheet::removeSprite(QSpriteSheetItem *sprite)
{
Q_ASSERT(sprite);
Q_D(QSpriteSheet);
d->m_sprites.removeOne(sprite);
// Remove bookkeeping connection
d->unregisterDestructionHelper(sprite);
}
void QSpriteSheet::setSprites(QList<QSpriteSheetItem *> sprites)
{
Q_D(QSpriteSheet);
d->m_sprites = sprites;
emit spritesChanged(sprites);
d->updateSizes();
}
} // namespace Qt3DExtras
QT_END_NAMESPACE
#include "moc_qspritesheet.cpp"
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