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39
40#include "qspritesheet.h"
41#include "qspritesheetitem.h"
42#include "qspritesheet_p.h"
43
44#include <Qt3DRender/qabstracttexture.h>
45
46QT_BEGIN_NAMESPACE
47
48using namespace Qt3DCore;
49
50namespace Qt3DExtras {
51
52QSpriteSheetPrivate::QSpriteSheetPrivate()
53 : QAbstractSpriteSheetPrivate()
54{
55}
56
57int QSpriteSheetPrivate::maxIndex() const
58{
59 return m_sprites.count() - 1;
60}
61
62void QSpriteSheetPrivate::updateSizes()
63{
64 Q_Q(QSpriteSheet);
65 if (m_texture)
66 m_textureSize = QSize(m_texture->width(), m_texture->height());
67 else
68 m_textureSize = QSize();
69
70 if (m_textureSize.isEmpty() || m_sprites.isEmpty()) {
71 if (m_currentIndex != -1) {
72 m_currentIndex = -1;
73 emit q->currentIndexChanged(currentIndex: m_currentIndex);
74 }
75 m_textureTransform.setToIdentity();
76 emit q->textureTransformChanged(textureTransform: m_textureTransform);
77 return;
78 }
79
80 if (m_currentIndex < 0 || m_currentIndex >= m_sprites.size()) {
81 m_currentIndex = 0;
82 emit q->currentIndexChanged(currentIndex: m_currentIndex);
83 }
84 updateTransform();
85}
86
87void QSpriteSheetPrivate::updateTransform()
88{
89 Q_Q(QSpriteSheet);
90 if (m_currentIndex < 0 || m_currentIndex >= m_sprites.size())
91 return;
92
93 const QSpriteSheetItem *r = m_sprites.at(i: m_currentIndex);
94 const float xScale = static_cast<float>(r->width()) / static_cast<float>(m_textureSize.width());
95 const float yScale = static_cast<float>(r->height()) / static_cast<float>(m_textureSize.height());
96
97 const float xTranslate = static_cast<float>(r->x()) / static_cast<float>(m_textureSize.width());
98 const float yTranslate = static_cast<float>(r->y()) / static_cast<float>(m_textureSize.height());
99
100 m_textureTransform.setToIdentity();
101 m_textureTransform(0, 0) = xScale;
102 m_textureTransform(1, 1) = yScale;
103 m_textureTransform(0, 2) = xTranslate;
104 m_textureTransform(1, 2) = yTranslate;
105 emit q->textureTransformChanged(textureTransform: m_textureTransform);
106}
107
108/*!
109 Constructs a new QSpriteSheet instance with parent object \a parent.
110 */
111QSpriteSheet::QSpriteSheet(QNode *parent)
112 : QAbstractSpriteSheet(*new QSpriteSheetPrivate, parent)
113{
114}
115
116QSpriteSheet::~QSpriteSheet()
117{
118}
119
120QVector<QSpriteSheetItem *> QSpriteSheet::sprites() const
121{
122 Q_D(const QSpriteSheet);
123 return d->m_sprites;
124}
125
126QSpriteSheetItem *QSpriteSheet::addSprite(int x, int y, int width, int height)
127{
128 QSpriteSheetItem *item = new QSpriteSheetItem(this);
129 item->setX(x);
130 item->setX(y);
131 item->setWidth(width);
132 item->setHeight(height);
133 addSprite(sprite: item);
134 return item;
135}
136
137void QSpriteSheet::addSprite(QSpriteSheetItem *sprite)
138{
139 Q_ASSERT(sprite);
140 Q_D(QSpriteSheet);
141 if (!d->m_sprites.contains(t: sprite)) {
142 d->m_sprites << sprite;
143
144 // Ensures proper bookkeeping
145 d->registerDestructionHelper(node: sprite, func: &QSpriteSheet::removeSprite, d->m_sprites);
146 if (!sprite->parent())
147 sprite->setParent(this);
148
149 emit spritesChanged(sprites: d->m_sprites);
150 d->updateSizes();
151 }
152}
153
154void QSpriteSheet::removeSprite(QSpriteSheetItem *sprite)
155{
156 Q_ASSERT(sprite);
157 Q_D(QSpriteSheet);
158 d->m_sprites.removeOne(t: sprite);
159 // Remove bookkeeping connection
160 d->unregisterDestructionHelper(node: sprite);
161}
162
163void QSpriteSheet::setSprites(QVector<QSpriteSheetItem *> sprites)
164{
165 Q_D(QSpriteSheet);
166 d->m_sprites = sprites;
167 emit spritesChanged(sprites);
168 d->updateSizes();
169}
170
171} // namespace Qt3DExtras
172
173QT_END_NAMESPACE
174

source code of qt3d/src/extras/defaults/qspritesheet.cpp