[556] | 1 | /****************************************************************************
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| 2 | **
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[846] | 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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[556] | 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the QtOpenVG module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include "qpixmapdata_vg_p.h"
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| 43 | #include "qpaintengine_vg_p.h"
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| 44 | #include <QtGui/private/qdrawhelper_p.h>
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[846] | 45 | #if !defined(QT_NO_EGL)
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| 46 | #include <QtGui/private/qegl_p.h>
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| 47 | #endif
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[556] | 48 | #include "qvg_p.h"
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| 49 | #include "qvgimagepool_p.h"
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[846] | 50 | #include <QBuffer>
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| 51 | #include <QImageReader>
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| 52 | #include <QtGui/private/qimage_p.h>
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[556] | 53 |
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| 54 | QT_BEGIN_NAMESPACE
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| 55 |
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| 56 | static int qt_vg_pixmap_serial = 0;
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| 57 |
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| 58 | QVGPixmapData::QVGPixmapData(PixelType type)
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| 59 | : QPixmapData(type, OpenVGClass)
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| 60 | {
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| 61 | Q_ASSERT(type == QPixmapData::PixmapType);
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| 62 | vgImage = VG_INVALID_HANDLE;
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| 63 | vgImageOpacity = VG_INVALID_HANDLE;
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| 64 | cachedOpacity = 1.0f;
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| 65 | recreate = true;
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| 66 | inImagePool = false;
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| 67 | inLRU = false;
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[846] | 68 | failedToAlloc = false;
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[556] | 69 | #if !defined(QT_NO_EGL)
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| 70 | context = 0;
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| 71 | qt_vg_register_pixmap(this);
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| 72 | #endif
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| 73 | setSerialNumber(++qt_vg_pixmap_serial);
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| 74 | }
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| 75 |
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| 76 | QVGPixmapData::~QVGPixmapData()
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| 77 | {
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| 78 | destroyImageAndContext();
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| 79 | #if !defined(QT_NO_EGL)
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| 80 | qt_vg_unregister_pixmap(this);
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| 81 | #endif
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| 82 | }
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| 83 |
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| 84 | void QVGPixmapData::destroyImages()
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| 85 | {
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| 86 | if (inImagePool) {
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| 87 | QVGImagePool *pool = QVGImagePool::instance();
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| 88 | if (vgImage != VG_INVALID_HANDLE)
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| 89 | pool->releaseImage(this, vgImage);
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| 90 | if (vgImageOpacity != VG_INVALID_HANDLE)
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| 91 | pool->releaseImage(this, vgImageOpacity);
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| 92 | } else {
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| 93 | if (vgImage != VG_INVALID_HANDLE)
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| 94 | vgDestroyImage(vgImage);
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| 95 | if (vgImageOpacity != VG_INVALID_HANDLE)
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| 96 | vgDestroyImage(vgImageOpacity);
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| 97 | }
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| 98 | vgImage = VG_INVALID_HANDLE;
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| 99 | vgImageOpacity = VG_INVALID_HANDLE;
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| 100 | inImagePool = false;
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| 101 | }
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| 102 |
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| 103 | void QVGPixmapData::destroyImageAndContext()
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| 104 | {
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| 105 | if (vgImage != VG_INVALID_HANDLE) {
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| 106 | // We need to have a context current to destroy the image.
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| 107 | #if !defined(QT_NO_EGL)
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| 108 | if (context->isCurrent()) {
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| 109 | destroyImages();
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| 110 | } else {
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| 111 | // We don't currently have a widget surface active, but we
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| 112 | // need a surface to make the context current. So use the
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| 113 | // shared pbuffer surface instead.
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| 114 | context->makeCurrent(qt_vg_shared_surface());
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| 115 | destroyImages();
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| 116 | context->lazyDoneCurrent();
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| 117 | }
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| 118 | #else
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| 119 | destroyImages();
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| 120 | #endif
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| 121 | }
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| 122 | #if !defined(QT_NO_EGL)
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| 123 | if (context) {
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| 124 | qt_vg_destroy_context(context, QInternal::Pixmap);
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| 125 | context = 0;
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| 126 | }
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| 127 | #endif
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| 128 | recreate = true;
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| 129 | }
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| 130 |
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| 131 | QPixmapData *QVGPixmapData::createCompatiblePixmapData() const
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| 132 | {
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| 133 | return new QVGPixmapData(pixelType());
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| 134 | }
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| 135 |
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| 136 | bool QVGPixmapData::isValid() const
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| 137 | {
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| 138 | return (w > 0 && h > 0);
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| 139 | }
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| 140 |
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| 141 | void QVGPixmapData::resize(int wid, int ht)
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| 142 | {
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| 143 | if (w == wid && h == ht)
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| 144 | return;
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| 145 |
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| 146 | w = wid;
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| 147 | h = ht;
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| 148 | d = 32; // We always use ARGB_Premultiplied for VG pixmaps.
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| 149 | is_null = (w <= 0 || h <= 0);
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| 150 | source = QImage();
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| 151 | recreate = true;
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| 152 |
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| 153 | setSerialNumber(++qt_vg_pixmap_serial);
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| 154 | }
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| 155 |
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| 156 | void QVGPixmapData::fromImage
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| 157 | (const QImage &image, Qt::ImageConversionFlags flags)
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| 158 | {
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[846] | 159 | if(image.isNull())
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| 160 | return;
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| 161 |
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| 162 | QImage img = image;
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| 163 | createPixmapForImage(img, flags, false);
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| 164 | }
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| 165 |
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| 166 | void QVGPixmapData::fromImageReader(QImageReader *imageReader,
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| 167 | Qt::ImageConversionFlags flags)
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| 168 | {
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| 169 | QImage image = imageReader->read();
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| 170 | if (image.isNull())
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| 171 | return;
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| 172 |
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| 173 | createPixmapForImage(image, flags, true);
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| 174 | }
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| 175 |
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| 176 | bool QVGPixmapData::fromFile(const QString &filename, const char *format,
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| 177 | Qt::ImageConversionFlags flags)
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| 178 | {
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| 179 | QImage image = QImageReader(filename, format).read();
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| 180 | if (image.isNull())
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| 181 | return false;
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| 182 |
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| 183 | createPixmapForImage(image, flags, true);
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| 184 |
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| 185 | return !isNull();
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| 186 | }
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| 187 |
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| 188 | bool QVGPixmapData::fromData(const uchar *buffer, uint len, const char *format,
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| 189 | Qt::ImageConversionFlags flags)
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| 190 | {
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| 191 | QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len);
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| 192 | QBuffer b(&a);
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| 193 | b.open(QIODevice::ReadOnly);
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| 194 | QImage image = QImageReader(&b, format).read();
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| 195 | if (image.isNull())
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| 196 | return false;
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| 197 |
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| 198 | createPixmapForImage(image, flags, true);
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| 199 |
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| 200 | return !isNull();
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| 201 | }
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| 202 |
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| 203 | /*!
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| 204 | out-of-place conversion (inPlace == false) will always detach()
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| 205 | */
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| 206 | void QVGPixmapData::createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace)
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| 207 | {
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[556] | 208 | if (image.size() == QSize(w, h))
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| 209 | setSerialNumber(++qt_vg_pixmap_serial);
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| 210 | else
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| 211 | resize(image.width(), image.height());
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[846] | 212 |
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| 213 | QImage::Format format = sourceFormat();
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| 214 | int d = image.depth();
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| 215 | if (d == 1 || d == 16 || d == 24 || (d == 32 && !image.hasAlphaChannel()))
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| 216 | format = QImage::Format_RGB32;
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| 217 | else if (!(flags & Qt::NoOpaqueDetection) && const_cast<QImage &>(image).data_ptr()->checkForAlphaPixels())
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| 218 | format = sourceFormat();
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| 219 | else
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| 220 | format = image.hasAlphaChannel() ? sourceFormat() : QImage::Format_RGB32;
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| 221 |
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| 222 | if (inPlace && image.data_ptr()->convertInPlace(format, flags)) {
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| 223 | source = image;
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| 224 | } else {
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| 225 | source = image.convertToFormat(format);
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| 226 |
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| 227 | // convertToFormat won't detach the image if format stays the same.
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| 228 | if (image.format() == format)
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| 229 | source.detach();
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| 230 | }
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| 231 |
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[556] | 232 | recreate = true;
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| 233 | }
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| 234 |
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| 235 | void QVGPixmapData::fill(const QColor &color)
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| 236 | {
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| 237 | if (!isValid())
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| 238 | return;
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| 239 |
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| 240 | if (source.isNull())
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| 241 | source = QImage(w, h, sourceFormat());
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| 242 |
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| 243 | if (source.depth() == 1) {
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| 244 | // Pick the best approximate color in the image's colortable.
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| 245 | int gray = qGray(color.rgba());
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| 246 | if (qAbs(qGray(source.color(0)) - gray) < qAbs(qGray(source.color(1)) - gray))
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| 247 | source.fill(0);
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| 248 | else
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| 249 | source.fill(1);
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| 250 | } else {
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| 251 | source.fill(PREMUL(color.rgba()));
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| 252 | }
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| 253 |
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| 254 | // Re-upload the image to VG the next time toVGImage() is called.
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| 255 | recreate = true;
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| 256 | }
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| 257 |
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| 258 | bool QVGPixmapData::hasAlphaChannel() const
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| 259 | {
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| 260 | if (!source.isNull())
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| 261 | return source.hasAlphaChannel();
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| 262 | else
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| 263 | return isValid();
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| 264 | }
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| 265 |
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| 266 | void QVGPixmapData::setAlphaChannel(const QPixmap &alphaChannel)
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| 267 | {
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| 268 | forceToImage();
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| 269 | source.setAlphaChannel(alphaChannel.toImage());
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| 270 | }
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| 271 |
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| 272 | QImage QVGPixmapData::toImage() const
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| 273 | {
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| 274 | if (!isValid())
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| 275 | return QImage();
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| 276 |
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| 277 | if (source.isNull()) {
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| 278 | source = QImage(w, h, sourceFormat());
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| 279 | recreate = true;
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| 280 | }
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| 281 |
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| 282 | return source;
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| 283 | }
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| 284 |
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| 285 | QImage *QVGPixmapData::buffer()
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| 286 | {
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| 287 | forceToImage();
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| 288 | return &source;
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| 289 | }
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| 290 |
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| 291 | QPaintEngine* QVGPixmapData::paintEngine() const
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| 292 | {
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| 293 | // If the application wants to paint into the QPixmap, we first
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| 294 | // force it to QImage format and then paint into that.
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| 295 | // This is simpler than juggling multiple VG contexts.
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| 296 | const_cast<QVGPixmapData *>(this)->forceToImage();
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| 297 | return source.paintEngine();
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| 298 | }
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| 299 |
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| 300 | VGImage QVGPixmapData::toVGImage()
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| 301 | {
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[846] | 302 | if (!isValid() || failedToAlloc)
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[556] | 303 | return VG_INVALID_HANDLE;
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| 304 |
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| 305 | #if !defined(QT_NO_EGL)
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| 306 | // Increase the reference count on the shared context.
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| 307 | if (!context)
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| 308 | context = qt_vg_create_context(0, QInternal::Pixmap);
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| 309 | #endif
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| 310 |
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| 311 | if (recreate && prevSize != QSize(w, h))
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| 312 | destroyImages();
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| 313 | else if (recreate)
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| 314 | cachedOpacity = -1.0f; // Force opacity image to be refreshed later.
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| 315 |
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| 316 | if (vgImage == VG_INVALID_HANDLE) {
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| 317 | vgImage = QVGImagePool::instance()->createImageForPixmap
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[846] | 318 | (qt_vg_image_to_vg_format(source.format()), w, h, VG_IMAGE_QUALITY_FASTER, this);
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[556] | 319 |
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| 320 | // Bail out if we run out of GPU memory - try again next time.
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[846] | 321 | if (vgImage == VG_INVALID_HANDLE) {
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| 322 | failedToAlloc = true;
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[556] | 323 | return VG_INVALID_HANDLE;
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[846] | 324 | }
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[556] | 325 |
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| 326 | inImagePool = true;
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| 327 | } else if (inImagePool) {
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| 328 | QVGImagePool::instance()->useImage(this);
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| 329 | }
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| 330 |
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| 331 | if (!source.isNull() && recreate) {
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| 332 | vgImageSubData
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| 333 | (vgImage,
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[846] | 334 | source.constBits(), source.bytesPerLine(),
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| 335 | qt_vg_image_to_vg_format(source.format()), 0, 0, w, h);
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[556] | 336 | }
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| 337 |
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| 338 | recreate = false;
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| 339 | prevSize = QSize(w, h);
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| 340 |
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| 341 | return vgImage;
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| 342 | }
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| 343 |
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| 344 | VGImage QVGPixmapData::toVGImage(qreal opacity)
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| 345 | {
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| 346 | #if !defined(QT_SHIVAVG)
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| 347 | // Force the primary VG image to be recreated if necessary.
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| 348 | if (toVGImage() == VG_INVALID_HANDLE)
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| 349 | return VG_INVALID_HANDLE;
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| 350 |
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| 351 | if (opacity == 1.0f)
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| 352 | return vgImage;
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| 353 |
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| 354 | // Create an alternative image for the selected opacity.
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| 355 | if (vgImageOpacity == VG_INVALID_HANDLE || cachedOpacity != opacity) {
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| 356 | if (vgImageOpacity == VG_INVALID_HANDLE) {
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| 357 | if (inImagePool) {
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| 358 | vgImageOpacity = QVGImagePool::instance()->createImageForPixmap
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| 359 | (VG_sARGB_8888_PRE, w, h, VG_IMAGE_QUALITY_FASTER, this);
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| 360 | } else {
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| 361 | vgImageOpacity = vgCreateImage
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| 362 | (VG_sARGB_8888_PRE, w, h, VG_IMAGE_QUALITY_FASTER);
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| 363 | }
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| 364 |
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| 365 | // Bail out if we run out of GPU memory - try again next time.
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| 366 | if (vgImageOpacity == VG_INVALID_HANDLE)
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| 367 | return VG_INVALID_HANDLE;
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| 368 | }
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| 369 | VGfloat matrix[20] = {
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| 370 | 1.0f, 0.0f, 0.0f, 0.0f,
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| 371 | 0.0f, 1.0f, 0.0f, 0.0f,
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| 372 | 0.0f, 0.0f, 1.0f, 0.0f,
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| 373 | 0.0f, 0.0f, 0.0f, opacity,
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| 374 | 0.0f, 0.0f, 0.0f, 0.0f
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| 375 | };
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| 376 | vgColorMatrix(vgImageOpacity, vgImage, matrix);
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| 377 | cachedOpacity = opacity;
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| 378 | }
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| 379 |
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| 380 | return vgImageOpacity;
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| 381 | #else
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| 382 | // vgColorMatrix() doesn't work with ShivaVG, so ignore the opacity.
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| 383 | Q_UNUSED(opacity);
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| 384 | return toVGImage();
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| 385 | #endif
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| 386 | }
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| 387 |
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| 388 | void QVGPixmapData::detachImageFromPool()
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| 389 | {
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| 390 | if (inImagePool) {
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| 391 | QVGImagePool::instance()->detachImage(this);
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| 392 | inImagePool = false;
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| 393 | }
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| 394 | }
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| 395 |
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| 396 | void QVGPixmapData::hibernate()
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| 397 | {
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| 398 | // If the image was imported (e.g, from an SgImage under Symbian),
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| 399 | // then we cannot copy it back to main memory for storage.
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| 400 | if (vgImage != VG_INVALID_HANDLE && source.isNull())
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| 401 | return;
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| 402 |
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| 403 | forceToImage();
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| 404 | destroyImageAndContext();
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| 405 | }
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| 406 |
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| 407 | void QVGPixmapData::reclaimImages()
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| 408 | {
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| 409 | if (!inImagePool)
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| 410 | return;
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| 411 | forceToImage();
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| 412 | destroyImages();
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| 413 | }
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| 414 |
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[769] | 415 | Q_DECL_IMPORT extern int qt_defaultDpiX();
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| 416 | Q_DECL_IMPORT extern int qt_defaultDpiY();
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[556] | 417 |
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| 418 | int QVGPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const
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| 419 | {
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| 420 | switch (metric) {
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| 421 | case QPaintDevice::PdmWidth:
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| 422 | return w;
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| 423 | case QPaintDevice::PdmHeight:
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| 424 | return h;
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| 425 | case QPaintDevice::PdmNumColors:
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| 426 | return 0;
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| 427 | case QPaintDevice::PdmDepth:
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| 428 | return d;
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| 429 | case QPaintDevice::PdmWidthMM:
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| 430 | return qRound(w * 25.4 / qt_defaultDpiX());
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| 431 | case QPaintDevice::PdmHeightMM:
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| 432 | return qRound(h * 25.4 / qt_defaultDpiY());
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| 433 | case QPaintDevice::PdmDpiX:
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| 434 | case QPaintDevice::PdmPhysicalDpiX:
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| 435 | return qt_defaultDpiX();
|
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| 436 | case QPaintDevice::PdmDpiY:
|
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| 437 | case QPaintDevice::PdmPhysicalDpiY:
|
---|
| 438 | return qt_defaultDpiY();
|
---|
| 439 | default:
|
---|
| 440 | qWarning("QVGPixmapData::metric(): Invalid metric");
|
---|
| 441 | return 0;
|
---|
| 442 | }
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 | // Force the pixmap data to be in QImage format.
|
---|
| 446 | void QVGPixmapData::forceToImage()
|
---|
| 447 | {
|
---|
| 448 | if (!isValid())
|
---|
| 449 | return;
|
---|
| 450 |
|
---|
| 451 | if (source.isNull())
|
---|
| 452 | source = QImage(w, h, sourceFormat());
|
---|
| 453 |
|
---|
| 454 | recreate = true;
|
---|
| 455 | }
|
---|
| 456 |
|
---|
| 457 | QImage::Format QVGPixmapData::sourceFormat() const
|
---|
| 458 | {
|
---|
| 459 | return QImage::Format_ARGB32_Premultiplied;
|
---|
| 460 | }
|
---|
| 461 |
|
---|
| 462 | /*
|
---|
| 463 | \internal
|
---|
| 464 |
|
---|
| 465 | Returns the VGImage that is storing the contents of \a pixmap.
|
---|
| 466 | Returns VG_INVALID_HANDLE if \a pixmap is not owned by the OpenVG
|
---|
| 467 | graphics system or \a pixmap is invalid.
|
---|
| 468 |
|
---|
| 469 | This function is typically used to access the backing store
|
---|
| 470 | for a pixmap when executing raw OpenVG calls. It must only
|
---|
| 471 | be used when a QPainter is active and the OpenVG paint engine
|
---|
| 472 | is in use by the QPainter.
|
---|
| 473 |
|
---|
| 474 | \sa {QtOpenVG Module}
|
---|
| 475 | */
|
---|
| 476 | Q_OPENVG_EXPORT VGImage qPixmapToVGImage(const QPixmap& pixmap)
|
---|
| 477 | {
|
---|
| 478 | QPixmapData *pd = pixmap.pixmapData();
|
---|
| 479 | if (!pd)
|
---|
| 480 | return VG_INVALID_HANDLE; // null QPixmap
|
---|
| 481 | if (pd->classId() == QPixmapData::OpenVGClass) {
|
---|
| 482 | QVGPixmapData *vgpd = static_cast<QVGPixmapData *>(pd);
|
---|
| 483 | if (vgpd->isValid())
|
---|
| 484 | return vgpd->toVGImage();
|
---|
| 485 | }
|
---|
| 486 | return VG_INVALID_HANDLE;
|
---|
| 487 | }
|
---|
| 488 |
|
---|
| 489 | QT_END_NAMESPACE
|
---|