diff options
Diffstat (limited to 'src/quick/items/qquickborderimage.cpp')
| -rw-r--r-- | src/quick/items/qquickborderimage.cpp | 144 |
1 files changed, 46 insertions, 98 deletions
diff --git a/src/quick/items/qquickborderimage.cpp b/src/quick/items/qquickborderimage.cpp index b8828d23ba..40daf518d3 100644 --- a/src/quick/items/qquickborderimage.cpp +++ b/src/quick/items/qquickborderimage.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtQuick 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qquickborderimage_p.h" #include "qquickborderimage_p_p.h" @@ -99,9 +63,8 @@ QT_BEGIN_NAMESPACE \image qml-borderimage-normal-image.png \endfloat - An unscaled image is displayed using an Image. The \l border property is - used to determine the parts of the image that will lie inside the unscaled corner - areas and the parts that will be stretched horizontally and vertically. + For comparison, an unscaled image is displayed using a simple Image item. + Here we have overlaid lines to show how we'd like to break it up with BorderImage: \snippet qml/borderimage/normal-image.qml normal image @@ -110,12 +73,15 @@ QT_BEGIN_NAMESPACE \image qml-borderimage-scaled.png \endfloat - A BorderImage is used to display the image, and it is given a size that is + But when a BorderImage is used to display the image, the \l border property is + used to determine the parts of the image that will lie inside the unscaled corner + areas, and the parts that will be stretched horizontally and vertically. + Then, you can give it a size that is larger than the original image. Since the \l horizontalTileMode property is set to \l{BorderImage::horizontalTileMode}{BorderImage.Stretch}, the parts of image in regions 2 and 8 are stretched horizontally. Since the \l verticalTileMode property is set to \l{BorderImage::verticalTileMode}{BorderImage.Stretch}, the parts of image - in regions 4 and 6 are stretched vertically. + in regions 4 and 6 are stretched vertically: \snippet qml/borderimage/borderimage-scaled.qml scaled border image @@ -128,17 +94,25 @@ QT_BEGIN_NAMESPACE \l horizontalTileMode property set to \l{BorderImage::horizontalTileMode}{BorderImage.Repeat}, the parts of image in regions 2 and 8 are tiled so that they fill the space at the top and bottom of the item. Similarly, the \l verticalTileMode property is set to - \l{BorderImage::verticalTileMode}{BorderImage.Repeat}, the parts of image in regions - 4 and 6 are tiled so that they fill the space at the left and right of the item. + \l{BorderImage::verticalTileMode}{BorderImage.Repeat}, so the parts of image in regions + 4 and 6 are tiled to fill the space at the left and right of the item: \snippet qml/borderimage/borderimage-tiled.qml tiled border image \clearfloat + \beginfloatleft + \image qml-borderimage-rounded.png + \endfloat + In some situations, the width of regions 2 and 8 may not be an exact multiple of the width of the corresponding regions in the source image. Similarly, the height of regions 4 and 6 - may not be an exact multiple of the height of the corresponding regions. It can be useful - to use \l{BorderImage::horizontalTileMode}{BorderImage.Round} instead of - \l{BorderImage::horizontalTileMode}{BorderImage.Repeat} in cases like these. + may not be an exact multiple of the height of the corresponding regions. If you use + \l{BorderImage::horizontalTileMode}{BorderImage.Round} mode, it will choose an integer + number of tiles and shrink them to fit: + + \snippet qml/borderimage/borderimage-rounded.qml tiled border image + + \clearfloat The Border Image example in \l{Qt Quick Examples - Image Elements} shows how a BorderImage can be used to simulate a shadow effect on a rectangular item. @@ -185,12 +159,10 @@ QQuickBorderImage::~QQuickBorderImage() This property describes the status of image loading. It can be one of: - \list - \li BorderImage.Null - no image has been set - \li BorderImage.Ready - the image has been loaded - \li BorderImage.Loading - the image is currently being loaded - \li BorderImage.Error - an error occurred while loading the image - \endlist + \value BorderImage.Null No image has been set + \value BorderImage.Ready The image has been loaded + \value BorderImage.Loading The image is currently being loaded + \value BorderImage.Error An error occurred while loading the image \sa progress */ @@ -304,20 +276,19 @@ void QQuickBorderImage::load() : d->url); if (!lf.isEmpty()) { QFile file(lf); - file.open(QIODevice::ReadOnly); - setGridScaledImage(QQuickGridScaledImage(&file)); + if (!file.open(QIODevice::ReadOnly)) + d->setStatus(Error); + else + setGridScaledImage(QQuickGridScaledImage(&file)); } else { #if QT_CONFIG(qml_network) - if (d->progress != 0.0) { - d->progress = 0.0; - emit progressChanged(d->progress); - } - d->status = Loading; + d->setProgress(0); + d->setStatus(Loading); + QNetworkRequest req(d->url); d->sciReply = qmlEngine(this)->networkAccessManager()->get(req); qmlobject_connect(d->sciReply, QNetworkReply, SIGNAL(finished()), this, QQuickBorderImage, SLOT(sciRequestFinished())); - emit statusChanged(d->status); #endif } } else { @@ -368,11 +339,9 @@ QQuickScaleGrid *QQuickBorderImage::border() This property describes how to repeat or stretch the middle parts of the border image. - \list - \li BorderImage.Stretch - Scales the image to fit to the available area. - \li BorderImage.Repeat - Tile the image until there is no more space. May crop the last image. - \li BorderImage.Round - Like Repeat, but scales the images down to ensure that the last image is not cropped. - \endlist + \value BorderImage.Stretch Scales the image to fit to the available area. + \value BorderImage.Repeat Tile the image until there is no more space. May crop the last image. + \value BorderImage.Round Like Repeat, but scales the images down to ensure that the last image is not cropped. The default tile mode for each property is BorderImage.Stretch. */ @@ -412,8 +381,7 @@ void QQuickBorderImage::setGridScaledImage(const QQuickGridScaledImage& sci) { Q_D(QQuickBorderImage); if (!sci.isValid()) { - d->status = Error; - emit statusChanged(d->status); + d->setStatus(Error); } else { QQuickScaleGrid *sg = border(); sg->setTop(sci.gridTop()); @@ -432,24 +400,18 @@ void QQuickBorderImage::requestFinished() { Q_D(QQuickBorderImage); - QSize impsize = d->pix.implicitSize(); + const QSize impsize = d->pix.implicitSize(); + setImplicitSize(impsize.width() / d->devicePixelRatio, impsize.height() / d->devicePixelRatio); + if (d->pix.isError()) { - d->status = Error; qmlWarning(this) << d->pix.error(); - if (d->progress != 0) { - d->progress = 0; - emit progressChanged(d->progress); - } + d->setStatus(Error); + d->setProgress(0); } else { - d->status = Ready; - if (d->progress != 1.0) { - d->progress = 1.0; - emit progressChanged(d->progress); - } + d->setStatus(Ready); + d->setProgress(1); } - setImplicitSize(impsize.width() / d->devicePixelRatio, impsize.height() / d->devicePixelRatio); - emit statusChanged(d->status); if (sourceSize() != d->oldSourceSize) { d->oldSourceSize = sourceSize(); emit sourceSizeChanged(); @@ -463,28 +425,14 @@ void QQuickBorderImage::requestFinished() } #if QT_CONFIG(qml_network) -#define BORDERIMAGE_MAX_REDIRECT 16 - void QQuickBorderImage::sciRequestFinished() { Q_D(QQuickBorderImage); - d->redirectCount++; - if (d->redirectCount < BORDERIMAGE_MAX_REDIRECT) { - QVariant redirect = d->sciReply->attribute(QNetworkRequest::RedirectionTargetAttribute); - if (redirect.isValid()) { - QUrl url = d->sciReply->url().resolved(redirect.toUrl()); - setSource(url); - return; - } - } - d->redirectCount=0; - if (d->sciReply->error() != QNetworkReply::NoError) { - d->status = Error; + d->setStatus(Error); d->sciReply->deleteLater(); d->sciReply = nullptr; - emit statusChanged(d->status); } else { QQuickGridScaledImage sci(d->sciReply); d->sciReply->deleteLater(); @@ -593,7 +541,7 @@ QSGNode *QQuickBorderImage::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeDat node->setInnerSourceRect(innerSourceRect); node->setInnerTargetRect(innerTargetRect); node->setSubSourceRect(subSourceRect); - node->setMirror(d->mirror); + node->setMirror(d->mirrorHorizontally, d->mirrorVertically); node->setMipmapFiltering(QSGTexture::None); node->setFiltering(d->smooth ? QSGTexture::Linear : QSGTexture::Nearest); |