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39 
40 #ifndef QSGCOMPRESSEDATLASTEXTURE_P_H
41 #define QSGCOMPRESSEDATLASTEXTURE_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtCore/QSize>
55 
56 #include <QtGui/qopengl.h>
57 
58 #include <QtQuick/QSGTexture>
59 #include <QtQuick/private/qsgareaallocator_p.h>
60 #include <QtQuick/private/qsgopenglatlastexture_p.h>
61 
62 QT_BEGIN_NAMESPACE
63 
64 class QSGCompressedTextureFactory;
65 
66 namespace QSGCompressedAtlasTexture {
67 
68 class Texture;
69 
70 class Atlas : public QSGOpenGLAtlasTexture::AtlasBase
71 {
72 public:
73     Atlas(const QSize &size, uint format);
74     ~Atlas();
75 
76     void generateTexture() override;
77     void uploadPendingTexture(int i) override;
78 
79     Texture *create(const QByteArray &data, int dataLength, int dataOffset, const QSize &size, const QSize &paddedSize);
80 
format()81     uint format() const { return m_format; }
82 
83 private:
84     uint m_format;
85 };
86 
87 class Texture : public QSGOpenGLAtlasTexture::TextureBase
88 {
89     Q_OBJECT
90 public:
91     Texture(Atlas *atlas, const QRect &textureRect, const QByteArray &data, int dataLength, int dataOffset, const QSize &size);
92     ~Texture();
93 
textureSize()94     QSize textureSize() const override { return m_size; }
95     bool hasAlphaChannel() const override;
hasMipmaps()96     bool hasMipmaps() const override { return false; }
97 
normalizedTextureSubRect()98     QRectF normalizedTextureSubRect() const override { return m_texture_coords_rect; }
99 
100     QSGTexture *removedFromAtlas() const override;
101 
data()102     const QByteArray &data() const { return m_data; }
sizeInBytes()103     int sizeInBytes() const { return m_dataLength; }
dataOffset()104     int dataOffset() const { return m_dataOffset; }
105 
106 private:
107     QRectF m_texture_coords_rect;
108     mutable QSGTexture *m_nonatlas_texture;
109     QByteArray m_data;
110     QSize m_size;
111     int m_dataLength;
112     int m_dataOffset;
113 };
114 
115 }
116 
117 QT_END_NAMESPACE
118 
119 #endif
120