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| ** |
| ** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| |
| #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.count() - 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() |
| { |
| } |
| |
| QVector<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(QVector<QSpriteSheetItem *> sprites) |
| { |
| Q_D(QSpriteSheet); |
| d->m_sprites = sprites; |
| emit spritesChanged(sprites); |
| d->updateSizes(); |
| } |
| |
| } // namespace Qt3DExtras |
| |
| QT_END_NAMESPACE |