| 1 | // Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qspritegrid.h" |
| 5 | #include "qspritegrid_p.h" |
| 6 | |
| 7 | #include <Qt3DRender/qabstracttexture.h> |
| 8 | |
| 9 | QT_BEGIN_NAMESPACE |
| 10 | |
| 11 | |
| 12 | namespace Qt3DExtras { |
| 13 | |
| 14 | using namespace Qt3DCore; |
| 15 | |
| 16 | QSpriteGridPrivate::QSpriteGridPrivate() |
| 17 | : QAbstractSpriteSheetPrivate() |
| 18 | , m_numColumns(1) |
| 19 | , m_numRows(1) |
| 20 | { |
| 21 | } |
| 22 | |
| 23 | int QSpriteGridPrivate::maxIndex() const |
| 24 | { |
| 25 | return m_numColumns * m_numRows - 1; |
| 26 | } |
| 27 | |
| 28 | void QSpriteGridPrivate::updateSizes() |
| 29 | { |
| 30 | Q_Q(QSpriteGrid); |
| 31 | if (m_texture && m_numColumns && m_numRows) { |
| 32 | m_textureSize = QSize(m_texture->width(), m_texture->height()); |
| 33 | m_cellSize = QSizeF((float) m_texture->width() / m_numColumns, (float) m_texture->height() / m_numRows); |
| 34 | } else { |
| 35 | m_textureSize = QSize(); |
| 36 | m_cellSize = QSizeF(); |
| 37 | } |
| 38 | |
| 39 | if (m_cellSize.isEmpty() || m_numColumns == 0 || m_numRows == 0) { |
| 40 | if (m_currentIndex != -1) { |
| 41 | m_currentIndex = -1; |
| 42 | emit q->currentIndexChanged(currentIndex: m_currentIndex); |
| 43 | } |
| 44 | m_textureTransform.setToIdentity(); |
| 45 | emit q->textureTransformChanged(textureTransform: m_textureTransform); |
| 46 | return; |
| 47 | } |
| 48 | |
| 49 | if (m_currentIndex == -1) { |
| 50 | m_currentIndex = 0; |
| 51 | emit q->currentIndexChanged(currentIndex: m_currentIndex); |
| 52 | } |
| 53 | updateTransform(); |
| 54 | } |
| 55 | |
| 56 | void QSpriteGridPrivate::updateTransform() |
| 57 | { |
| 58 | Q_Q(QSpriteGrid); |
| 59 | const float xScale = (float) m_cellSize.width() / (float) m_textureSize.width(); |
| 60 | const float yScale = (float) m_cellSize.height() / (float) m_textureSize.height(); |
| 61 | |
| 62 | const int currentRow = m_currentIndex / m_numColumns; |
| 63 | const int currentColumn = m_currentIndex % m_numColumns; |
| 64 | const float xTranslate = currentColumn * xScale; |
| 65 | const float yTranslate = currentRow * yScale; |
| 66 | |
| 67 | m_textureTransform.setToIdentity(); |
| 68 | m_textureTransform(0, 0) = xScale; |
| 69 | m_textureTransform(1, 1) = yScale; |
| 70 | m_textureTransform(0, 2) = xTranslate; |
| 71 | m_textureTransform(1, 2) = yTranslate; |
| 72 | emit q->textureTransformChanged(textureTransform: m_textureTransform); |
| 73 | } |
| 74 | |
| 75 | /*! |
| 76 | Constructs a new QSpriteGrid instance with parent object \a parent. |
| 77 | */ |
| 78 | QSpriteGrid::QSpriteGrid(QNode *parent) |
| 79 | : QAbstractSpriteSheet(*new QSpriteGridPrivate, parent) |
| 80 | { |
| 81 | } |
| 82 | |
| 83 | QSpriteGrid::~QSpriteGrid() |
| 84 | { |
| 85 | } |
| 86 | |
| 87 | int QSpriteGrid::rows() const |
| 88 | { |
| 89 | Q_D(const QSpriteGrid); |
| 90 | return d->m_numRows; |
| 91 | } |
| 92 | |
| 93 | void QSpriteGrid::setRows(int rows) |
| 94 | { |
| 95 | Q_D(QSpriteGrid); |
| 96 | if (d->m_numRows != rows) { |
| 97 | d->m_numRows = rows; |
| 98 | d->updateSizes(); |
| 99 | emit rowsChanged(rows); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | int QSpriteGrid::columns() const |
| 104 | { |
| 105 | Q_D(const QSpriteGrid); |
| 106 | return d->m_numColumns; |
| 107 | } |
| 108 | |
| 109 | void QSpriteGrid::setColumns(int columns) |
| 110 | { |
| 111 | Q_D(QSpriteGrid); |
| 112 | if (d->m_numColumns != columns) { |
| 113 | d->m_numColumns = columns; |
| 114 | d->updateSizes(); |
| 115 | emit columnsChanged(columns); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | } // namespace Qt3DExtras |
| 120 | |
| 121 | QT_END_NAMESPACE |
| 122 | |
| 123 | #include "moc_qspritegrid.cpp" |
| 124 |