1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 The Qt Company Ltd.
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the Qt Quick Extras module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 3 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 3 requirements
23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24 **
25 ** GNU General Public License Usage
26 ** Alternatively, this file may be used under the terms of the GNU
27 ** General Public License version 2.0 or (at your option) the GNU General
28 ** Public license version 3 or any later version approved by the KDE Free
29 ** Qt Foundation. The licenses are as published by the Free Software
30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31 ** included in the packaging of this file. Please review the following
32 ** information to ensure the GNU General Public License requirements will
33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34 ** https://www.gnu.org/licenses/gpl-3.0.html.
35 **
36 ** $QT_END_LICENSE$
37 **
38 ****************************************************************************/
39
40 #include "qquickpicture_p.h"
41
42 #if QT_CONFIG(picture)
43
44 #include <QQmlFile>
45 #include <QDebug>
46
47 /*!
48 \qmltype Picture
49 \inherits QQuickPaintedItem
50 \inqmlmodule QtQuick.Extras
51 \since QtQuick.Extras 1.4
52 \ingroup extras
53 \ingroup extras-non-interactive
54 \brief An indicator that displays a colorized QPicture icon.
55
56 Picture displays icons in a scalable vector format. It can also colorize
57 the icons via the \l color property.
58
59 The icon to display is set with the \l source property.
60
61 For example, if you have access to the ISO 7000 icons that come with Qt
62 Enterprise, you can specify the following URL:
63
64 \code
65 "qrc:/iso-icons/iso_grs_7000_4_0001.dat"
66 \endcode
67
68 Due to the
69 \l {http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=65977}
70 {large selection of icons} available in this package, it is advisable to
71 use Qt Creator's Qt Quick Designer tool to browse and select icons, as this
72 property will then be set automatically.
73 */
74
QQuickPicture(QQuickItem * parent)75 QQuickPicture::QQuickPicture(QQuickItem *parent)
76 : QQuickPaintedItem(parent)
77 {
78 const qreal defaultFontHeight = QFontMetricsF(QFont()).height();
79 setImplicitWidth(defaultFontHeight * 4);
80 setImplicitHeight(defaultFontHeight * 4);
81 }
82
~QQuickPicture()83 QQuickPicture::~QQuickPicture()
84 {
85 }
86
paint(QPainter * painter)87 void QQuickPicture::paint(QPainter *painter)
88 {
89 const QSize size = boundingRect().size().toSize();
90 // Don't want the scale to apply to the fill.
91 painter->save();
92 painter->scale(qreal(size.width()) / mPicture.boundingRect().width(),
93 qreal(size.height()) / mPicture.boundingRect().height());
94 painter->drawPicture(0, 0, mPicture);
95 painter->restore();
96
97 if (mColor.isValid()) {
98 painter->setCompositionMode(QPainter::CompositionMode_SourceIn);
99 painter->fillRect(0, 0, size.width(), size.height(), mColor);
100 }
101 }
102
103 /*!
104 \qmlproperty url Picture::source
105
106 This property specifies the URL of the icon to use. The URL must point to a
107 local file that contains \l QPicture data. For example:
108
109 \code
110 "mypicture.dat"
111 \endcode
112 */
source() const113 QUrl QQuickPicture::source() const
114 {
115 return mSource;
116 }
117
setSource(const QUrl & source)118 void QQuickPicture::setSource(const QUrl &source)
119 {
120 if (mSource != source) {
121 mSource = source;
122 const QString fileName = QQmlFile::urlToLocalFileOrQrc(source);
123 if (!mPicture.load(fileName)) {
124 qWarning().nospace() << "Failed to load " << fileName << "; does it exist?";
125 mPicture = QPicture();
126 }
127
128 setImplicitWidth(mPicture.boundingRect().width());
129 setImplicitHeight(mPicture.boundingRect().height());
130
131 update();
132 emit sourceChanged();
133 }
134 }
135
136 /*!
137 \qmlproperty color Picture::color
138
139 This property specifies the color of the indicator.
140
141 The default value is \c "black".
142 */
color() const143 QColor QQuickPicture::color() const
144 {
145 return mColor;
146 }
147
setColor(const QColor & color)148 void QQuickPicture::setColor(const QColor &color)
149 {
150 if (mColor != color) {
151 mColor = color;
152 update();
153 emit colorChanged();
154 }
155 }
156
resetColor()157 void QQuickPicture::resetColor()
158 {
159 setColor(QColor());
160 }
161
162 #endif // QT_CONFIG(picture)
163