diff options
Diffstat (limited to 'src/gui/image/qimage.cpp')
-rw-r--r-- | src/gui/image/qimage.cpp | 125 |
1 files changed, 92 insertions, 33 deletions
diff --git a/src/gui/image/qimage.cpp b/src/gui/image/qimage.cpp index 887a7c29eb..e6f86fceaa 100644 --- a/src/gui/image/qimage.cpp +++ b/src/gui/image/qimage.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtGui module of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** 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 Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -47,7 +47,6 @@ #include <ctype.h> #include <stdlib.h> #include <limits.h> -#include <math.h> #include <qpa/qplatformpixmap.h> #include <private/qdrawhelper_p.h> #include <private/qmemrotate_p.h> @@ -653,7 +652,8 @@ bool QImageData::checkForAlphaPixels() const The following image formats are available in Qt. Values from Format_ARGB8565_Premultiplied to Format_ARGB4444_Premultiplied were added in Qt 4.4. Values Format_RGBX8888, Format_RGBA8888 and Format_RGBA8888_Premultiplied were added in Qt 5.2. Values Format_BGR30, Format_A2BGR30_Premultiplied, - Format_RGB30, Format_A2RGB30_Premultiplied were added in Qt 5.4. + Format_RGB30, Format_A2RGB30_Premultiplied were added in Qt 5.4. Format_Alpha8 and Format_Grayscale8 + were added in Qt 5.5. See the notes after the table. \value Format_Invalid The image is invalid. @@ -709,6 +709,8 @@ bool QImageData::checkForAlphaPixels() const \value Format_A2BGR30_Premultiplied The image is stored using a 32-bit premultiplied ABGR format (2-10-10-10). \value Format_RGB30 The image is stored using a 32-bit RGB format (x-10-10-10). \value Format_A2RGB30_Premultiplied The image is stored using a 32-bit premultiplied ARGB format (2-10-10-10). + \value Format_Alpha8 The image is stored using an 8-bit alpha only format. + \value Format_Grayscale8 The image is stored using an 8-bit grayscale format. \note Drawing into a QImage with QImage::Format_Indexed8 is not supported. @@ -1349,7 +1351,11 @@ int QImage::colorCount() const \sa colorTable(), setColor(), {QImage#Image Transformations}{Image Transformations} */ +#if QT_VERSION >= QT_VERSION_CHECK(6,0,0) +void QImage::setColorTable(const QVector<QRgb> &colors) +#else void QImage::setColorTable(const QVector<QRgb> colors) +#endif { if (!d) return; @@ -1359,7 +1365,11 @@ void QImage::setColorTable(const QVector<QRgb> colors) if (!d) return; +#if QT_VERSION >= QT_VERSION_CHECK(6,0,0) + d->colortable = colors; +#else d->colortable = qMove(const_cast<QVector<QRgb>&>(colors)); +#endif d->has_alpha_clut = false; for (int i = 0; i < d->colortable.size(); ++i) { if (qAlpha(d->colortable.at(i)) != 255) { @@ -2352,6 +2362,10 @@ bool QImage::allGray() const return false; } return true; + case Format_Alpha8: + return false; + case Format_Grayscale8: + return true; case Format_RGB32: case Format_ARGB32: case Format_ARGB32_Premultiplied: @@ -2405,9 +2419,9 @@ bool QImage::allGray() const /*! For 32-bit images, this function is equivalent to allGray(). - For 8-bpp images, this function returns \c true if color(i) is - QRgb(i, i, i) for all indexes of the color table; otherwise - returns \c false. + For color indexed images, this function returns \c true if + color(i) is QRgb(i, i, i) for all indexes of the color table; + otherwise returns \c false. \sa allGray(), {QImage#Image Formats}{Image Formats} */ @@ -2416,12 +2430,19 @@ bool QImage::isGrayscale() const if (!d) return false; + if (d->format == QImage::Format_Alpha8) + return false; + + if (d->format == QImage::Format_Grayscale8) + return true; + switch (depth()) { case 32: case 24: case 16: return allGray(); case 8: { + Q_ASSERT(d->format == QImage::Format_Indexed8); for (int i = 0; i < colorCount(); i++) if (d->colortable.at(i) != qRgb(i,i,i)) return false; @@ -2998,6 +3019,9 @@ QImage QImage::rgbSwapped_helper() const case NImageFormats: Q_ASSERT(false); break; + case Format_Alpha8: + case Format_Grayscale8: + return *this; case Format_Mono: case Format_MonoLSB: case Format_Indexed8: @@ -3084,6 +3108,9 @@ void QImage::rgbSwapped_inplace() case NImageFormats: Q_ASSERT(false); break; + case Format_Alpha8: + case Format_Grayscale8: + return; case Format_Mono: case Format_MonoLSB: case Format_Indexed8: @@ -4017,7 +4044,7 @@ void QImage::setAlphaChannel(const QImage &alphaChannel) return; // Slight optimization since alphachannels are returned as 8-bit grays. - if (alphaChannel.d->depth == 8 && alphaChannel.isGrayscale()) { + if (alphaChannel.format() == QImage::Format_Alpha8 ||( alphaChannel.d->depth == 8 && alphaChannel.isGrayscale())) { const uchar *src_data = alphaChannel.d->data; const uchar *dest_data = d->data; for (int y=0; y<h; ++y) { @@ -4075,9 +4102,13 @@ void QImage::setAlphaChannel(const QImage &alphaChannel) Most usecases for this function can be replaced with QPainter and using composition modes. + Note this returns a color-indexed image if you want the alpha channel in + the alpha8 format instead use convertToFormat(Format_Alpha8) on the source + image. + \warning This is an expensive function. - \sa setAlphaChannel(), hasAlphaChannel(), + \sa setAlphaChannel(), hasAlphaChannel(), convertToFormat(), {QPixmap#Pixmap Information}{Pixmap}, {QImage#Image Transformations}{Image Transformations} */ @@ -4087,6 +4118,9 @@ QImage QImage::alphaChannel() const if (!d) return QImage(); + if (d->format == QImage::Format_Alpha8) + return *this; + int w = d->width; int h = d->height; @@ -4264,6 +4298,8 @@ static QImage rotated90(const QImage &image) { reinterpret_cast<quint16*>(out.bits()), out.bytesPerLine()); break; + case QImage::Format_Alpha8: + case QImage::Format_Grayscale8: case QImage::Format_Indexed8: qt_memrotate270(reinterpret_cast<const quint8*>(image.bits()), w, h, image.bytesPerLine(), @@ -4330,6 +4366,8 @@ static QImage rotated270(const QImage &image) { reinterpret_cast<quint16*>(out.bits()), out.bytesPerLine()); break; + case QImage::Format_Alpha8: + case QImage::Format_Grayscale8: case QImage::Format_Indexed8: qt_memrotate90(reinterpret_cast<const quint8*>(image.bits()), w, h, image.bytesPerLine(), @@ -4481,24 +4519,17 @@ QImage QImage::transformed(const QTransform &matrix, Qt::TransformationMode mode dImage.d->dpmx = dotsPerMeterX(); dImage.d->dpmy = dotsPerMeterY(); - switch (bpp) { - // initizialize the data - case 8: - if (dImage.d->colortable.size() < 256) { - // colors are left in the color table, so pick that one as transparent - dImage.d->colortable.append(0x0); - memset(dImage.bits(), dImage.d->colortable.size() - 1, dImage.byteCount()); - } else { - memset(dImage.bits(), 0, dImage.byteCount()); - } - break; - case 1: - case 16: - case 24: - case 32: - memset(dImage.bits(), 0x00, dImage.byteCount()); - break; - } + // initizialize the data + if (d->format == QImage::Format_Indexed8) { + if (dImage.d->colortable.size() < 256) { + // colors are left in the color table, so pick that one as transparent + dImage.d->colortable.append(0x0); + memset(dImage.bits(), dImage.d->colortable.size() - 1, dImage.byteCount()); + } else { + memset(dImage.bits(), 0, dImage.byteCount()); + } + } else + memset(dImage.bits(), 0x00, dImage.byteCount()); if (target_format >= QImage::Format_RGB32) { // Prevent QPainter from applying devicePixelRatio corrections @@ -4572,7 +4603,9 @@ bool QImageData::convertInPlace(QImage::Format newFormat, Qt::ImageConversionFla InPlace_Image_Converter converter = *converterPtr; if (converter) return converter(this, flags); - else if (format > QImage::Format_Indexed8 && newFormat > QImage::Format_Indexed8) + else if (format > QImage::Format_Indexed8 && newFormat > QImage::Format_Indexed8 && !qimage_converter_map[format][newFormat]) + // Convert inplace generic, but only if there are no direct converters, + // any direct ones are probably better even if not inplace. return convert_generic_inplace(this, newFormat, flags); else return false; @@ -4942,6 +4975,32 @@ static Q_CONSTEXPR QPixelFormat pixelformats[] = { /*PREMULTIPLIED*/ QPixelFormat::Premultiplied, /*INTERPRETATION*/ QPixelFormat::UnsignedInteger, /*BYTE ORDER*/ QPixelFormat::CurrentSystemEndian), + //QImage::Format_Alpha8: + QPixelFormat(QPixelFormat::Alpha, + /*First*/ 0, + /*SECOND*/ 0, + /*THIRD*/ 0, + /*FOURTH*/ 0, + /*FIFTH*/ 0, + /*ALPHA*/ 8, + /*ALPHA USAGE*/ QPixelFormat::UsesAlpha, + /*ALPHA POSITION*/ QPixelFormat::AtBeginning, + /*PREMULTIPLIED*/ QPixelFormat::Premultiplied, + /*INTERPRETATION*/ QPixelFormat::UnsignedByte, + /*BYTE ORDER*/ QPixelFormat::CurrentSystemEndian), + //QImage::Format_Grayscale8: + QPixelFormat(QPixelFormat::Grayscale, + /*GRAY*/ 8, + /*SECOND*/ 0, + /*THIRD*/ 0, + /*FOURTH*/ 0, + /*FIFTH*/ 0, + /*ALPHA*/ 0, + /*ALPHA USAGE*/ QPixelFormat::IgnoresAlpha, + /*ALPHA POSITION*/ QPixelFormat::AtBeginning, + /*PREMULTIPLIED*/ QPixelFormat::NotPremultiplied, + /*INTERPRETATION*/ QPixelFormat::UnsignedByte, + /*BYTE ORDER*/ QPixelFormat::CurrentSystemEndian), }; Q_STATIC_ASSERT(sizeof(pixelformats) / sizeof(*pixelformats) == QImage::NImageFormats); |