summaryrefslogtreecommitdiffstats
path: root/src/controls/Styles/Android/qquickandroid9patch.cpp
blob: 48e86baa79e9e739e6477eae654f51d12ad22a71 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qquickandroid9patch_p.h"
#include <qquickwindow.h>
#include <qsgnode.h>

QT_BEGIN_NAMESPACE

class QQuickAndroid9PatchNode1 : public QSGGeometryNode
{
public:
    QQuickAndroid9PatchNode1();
    ~QQuickAndroid9PatchNode1();

    void initialize(QSGTexture *texture, const QRectF &bounds, const QSize &sourceSize,
                    const QQuickAndroid9PatchDivs1 &xDivs, const QQuickAndroid9PatchDivs1 &yDivs);

private:
    QSGGeometry m_geometry;
    QSGTextureMaterial m_material;
};

QQuickAndroid9PatchNode1::QQuickAndroid9PatchNode1()
    : m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
{
    m_geometry.setDrawingMode(GL_TRIANGLES);
    setGeometry(&m_geometry);
    setMaterial(&m_material);
}

QQuickAndroid9PatchNode1::~QQuickAndroid9PatchNode1()
{
    delete m_material.texture();
}

void QQuickAndroid9PatchNode1::initialize(QSGTexture *texture, const QRectF &bounds, const QSize &sourceSize,
                                         const QQuickAndroid9PatchDivs1 &xDivs, const QQuickAndroid9PatchDivs1 &yDivs)
{
    delete m_material.texture();
    m_material.setTexture(texture);

    const int xlen = xDivs.data.size();
    const int ylen = yDivs.data.size();

    if (xlen > 0 && ylen > 0) {
        const int quads = (xlen - 1) * (ylen - 1);
        static const int verticesPerQuad = 6;
        m_geometry.allocate(xlen * ylen, verticesPerQuad * quads);

        QSGGeometry::TexturedPoint2D *vertices = m_geometry.vertexDataAsTexturedPoint2D();
        QVector<qreal> xCoords = xDivs.coordsForSize(bounds.width());
        QVector<qreal> yCoords = yDivs.coordsForSize(bounds.height());
        for (int y = 0; y < ylen; ++y) {
            for (int x = 0; x < xlen; ++x, ++vertices)
                vertices->set(xCoords[x], yCoords[y], xDivs.data[x] / sourceSize.width(),
                                                      yDivs.data[y] / sourceSize.height());
        }

        quint16 *indices = m_geometry.indexDataAsUShort();
        int n = quads;
        for (int q = 0; n--; ++q) {
            if ((q + 1) % xlen == 0) // next row
                ++q;
            // Bottom-left half quad triangle
            indices[0] = q;
            indices[1] = q + xlen;
            indices[2] = q + xlen + 1;

            // Top-right half quad triangle
            indices[3] = q;
            indices[4] = q + xlen + 1;
            indices[5] = q + 1;

            indices += verticesPerQuad;
        }
    }

    markDirty(QSGNode::DirtyGeometry | QSGNode::DirtyMaterial);
}

QVector<qreal> QQuickAndroid9PatchDivs1::coordsForSize(qreal size) const
{
    // n = number of stretchable sections
    // We have to compensate when adding 0 and/or
    // the source image width to the divs vector.
    const int l = data.size();
    const int n = (inverted ? l - 1 : l) >> 1;
    const qreal stretchAmount = (size - data.last()) / n;

    QVector<qreal> coords;
    coords.reserve(l);
    coords.append(0);

    bool stretch = !inverted;
    for (int i = 1; i < l; ++i) {
        qreal advance = data[i] - data[i - 1];
        if (stretch)
            advance += stretchAmount;
        coords.append(coords.last() + advance);

        stretch = !stretch;
    }

    return coords;
}

void QQuickAndroid9PatchDivs1::fill(const QVariantList &divs, qreal size)
{
    if (!data.isEmpty())
        return;

    inverted = divs.isEmpty() || divs.first().toInt() != 0;
    // Reserve an extra item in case we need to add the image width/height
    if (inverted) {
        data.reserve(divs.size() + 2);
        data.append(0);
    } else {
        data.reserve(divs.size() + 1);
    }

    for (const QVariant &div : divs)
        data.append(div.toReal());

    data.append(size);
}

void QQuickAndroid9PatchDivs1::clear()
{
    data.clear();
}

QQuickAndroid9Patch1::QQuickAndroid9Patch1(QQuickItem *parent) : QQuickItem(parent)
{
    connect(this, SIGNAL(widthChanged()), this, SLOT(updateDivs()));
    connect(this, SIGNAL(heightChanged()), this, SLOT(updateDivs()));
}

QQuickAndroid9Patch1::~QQuickAndroid9Patch1()
{
}

QUrl QQuickAndroid9Patch1::source() const
{
    return m_source;
}

void QQuickAndroid9Patch1::setSource(const QUrl &source)
{
    if (m_source != source) {
        m_source = source;
        m_xDivs.clear();
        m_yDivs.clear();
        loadImage();
        m_sourceSize = m_image.size();

        emit sourceChanged(source);
        emit sourceSizeChanged(m_sourceSize);
    }
}

QVariantList QQuickAndroid9Patch1::xDivs() const
{
    return m_xVars;
}

void QQuickAndroid9Patch1::setXDivs(const QVariantList &divs)
{
    if (m_xVars != divs) {
        m_xVars = divs;

        m_xDivs.clear();
        updateDivs();
        emit xDivsChanged(divs);
    }
}

QVariantList QQuickAndroid9Patch1::yDivs() const
{
    return m_yVars;
}

void QQuickAndroid9Patch1::setYDivs(const QVariantList &divs)
{
    if (m_yVars != divs) {
        m_yVars = divs;

        m_yDivs.clear();
        updateDivs();
        emit yDivsChanged(divs);
    }
}

QSize QQuickAndroid9Patch1::sourceSize() const
{
    return m_sourceSize;
}

void QQuickAndroid9Patch1::classBegin()
{
    QQuickItem::classBegin();
}

void QQuickAndroid9Patch1::componentComplete()
{
    QQuickItem::componentComplete();
    loadImage();
}

QSGNode *QQuickAndroid9Patch1::updatePaintNode(QSGNode *node, UpdatePaintNodeData *data)
{
    Q_UNUSED(data);

    if (m_image.isNull()) {
        delete node;
        return 0;
    }

    QQuickAndroid9PatchNode1 *patchNode = static_cast<QQuickAndroid9PatchNode1 *>(node);
    if (!patchNode)
        patchNode = new QQuickAndroid9PatchNode1;

#ifdef QSG_RUNTIME_DESCRIPTION
    qsgnode_set_description(patchNode, QString::fromLatin1("Android9Patch: '%1'").arg(m_source.toString()));
#endif

    QSGTexture *texture = window()->createTextureFromImage(m_image);
    patchNode->initialize(texture, boundingRect(), m_image.size(), m_xDivs, m_yDivs);
    return patchNode;
}

void QQuickAndroid9Patch1::loadImage()
{
    if (!isComponentComplete())
        return;

    if (m_source.isEmpty())
        m_image = QImage();
    else
        m_image = QImage(m_source.toLocalFile());

    setFlag(QQuickItem::ItemHasContents, !m_image.isNull());
    setImplicitSize(m_image.width(), m_image.height());

    updateDivs();
}

void QQuickAndroid9Patch1::updateDivs()
{
    if (!isComponentComplete() || m_image.isNull() || width() <= 0 || height() <= 0)
        return;

    m_xDivs.fill(m_xVars, m_image.width());
    m_yDivs.fill(m_yVars, m_image.height());

    update();
}

QT_END_NAMESPACE