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39 | |
40 | #include "qsgninepatchnode.h" |
41 | |
42 | QT_BEGIN_NAMESPACE |
43 | |
44 | /*! |
45 | \class QSGNinePatchNode |
46 | \inmodule QtQuick |
47 | \since 5.8 |
48 | \internal |
49 | */ |
50 | |
51 | /*! |
52 | \fn void QSGNinePatchNode::setTexture(QSGTexture *texture) |
53 | \internal |
54 | */ |
55 | |
56 | /*! |
57 | \fn void QSGNinePatchNode::setBounds(const QRectF &bounds) |
58 | \internal |
59 | */ |
60 | |
61 | /*! |
62 | \fn void QSGNinePatchNode::setDevicePixelRatio(qreal ratio) |
63 | \internal |
64 | */ |
65 | |
66 | /*! |
67 | \fn void QSGNinePatchNode::setPadding(qreal left, qreal top, qreal right, qreal bottom) |
68 | \internal |
69 | */ |
70 | |
71 | |
72 | /*! |
73 | \fn void QSGNinePatchNode::update() |
74 | \internal |
75 | */ |
76 | |
77 | void QSGNinePatchNode::rebuildGeometry(QSGTexture *texture, QSGGeometry *geometry, const QVector4D &padding, |
78 | const QRectF &bounds, qreal dpr) |
79 | { |
80 | if (padding.x() <= 0 && padding.y() <= 0 && padding.z() <= 0 && padding.w() <= 0) { |
81 | geometry->allocate(vertexCount: 4, indexCount: 0); |
82 | QSGGeometry::updateTexturedRectGeometry(g: geometry, rect: bounds, sourceRect: texture->normalizedTextureSubRect()); |
83 | return; |
84 | } |
85 | |
86 | QRectF tc = texture->normalizedTextureSubRect(); |
87 | QSize ts = texture->textureSize(); |
88 | ts.setHeight(ts.height() / dpr); |
89 | ts.setWidth(ts.width() / dpr); |
90 | |
91 | qreal invtw = tc.width() / ts.width(); |
92 | qreal invth = tc.height() / ts.height(); |
93 | |
94 | struct Coord { qreal p; qreal t; }; |
95 | Coord cx[4] = { { .p: bounds.left(), .t: tc.left() }, |
96 | { .p: bounds.left() + padding.x(), .t: tc.left() + padding.x() * invtw }, |
97 | { .p: bounds.right() - padding.z(), .t: tc.right() - padding.z() * invtw }, |
98 | { .p: bounds.right(), .t: tc.right() } |
99 | }; |
100 | Coord cy[4] = { { .p: bounds.top(), .t: tc.top() }, |
101 | { .p: bounds.top() + padding.y(), .t: tc.top() + padding.y() * invth }, |
102 | { .p: bounds.bottom() - padding.w(), .t: tc.bottom() - padding.w() * invth }, |
103 | { .p: bounds.bottom(), .t: tc.bottom() } |
104 | }; |
105 | |
106 | geometry->allocate(vertexCount: 16, indexCount: 28); |
107 | QSGGeometry::TexturedPoint2D *v = geometry->vertexDataAsTexturedPoint2D(); |
108 | for (int y = 0; y < 4; ++y) { |
109 | for (int x = 0; x < 4; ++x) { |
110 | v->set(nx: cx[x].p, ny: cy[y].p, ntx: cx[x].t, nty: cy[y].t); |
111 | ++v; |
112 | } |
113 | } |
114 | |
115 | quint16 *i = geometry->indexDataAsUShort(); |
116 | for (int r = 0; r < 3; ++r) { |
117 | if (r > 0) |
118 | *i++ = 4 * r; |
119 | for (int c = 0; c < 4; ++c) { |
120 | i[0] = 4 * r + c; |
121 | i[1] = 4 * r + c + 4; |
122 | i += 2; |
123 | } |
124 | if (r < 2) |
125 | *i++ = 4 * r + 3 + 4; |
126 | } |
127 | } |
128 | |
129 | QT_END_NAMESPACE |
130 | |