1 | /* |
2 | This file is part of the KDE libraries |
3 | SPDX-FileCopyrightText: 2006 Hamish Rodda <rodda@kde.org> |
4 | |
5 | SPDX-License-Identifier: LGPL-2.0-only |
6 | */ |
7 | |
8 | #include "kiconengine.h" |
9 | |
10 | #include "kiconloader_p.h" |
11 | #include <kiconloader.h> |
12 | |
13 | #include "kiconcolors.h" |
14 | #include <KIconTheme> |
15 | #include <QFileInfo> |
16 | #include <QPainter> |
17 | #include <qscopeguard.h> |
18 | |
19 | class KIconEnginePrivate |
20 | { |
21 | public: |
22 | QPointer<KIconLoader> mIconLoader; |
23 | bool mCustomColors = false; |
24 | KIconColors mColors; |
25 | QString mActualIconName; |
26 | }; |
27 | |
28 | KIconEngine::KIconEngine(const QString &iconName, KIconLoader *iconLoader, const QStringList &overlays) |
29 | : mIconName(iconName) |
30 | , mOverlays(overlays) |
31 | , d(new KIconEnginePrivate{iconLoader, false, {}, {}}) |
32 | { |
33 | } |
34 | |
35 | KIconEngine::KIconEngine(const QString &iconName, KIconLoader *iconLoader) |
36 | : mIconName(iconName) |
37 | , d(new KIconEnginePrivate{iconLoader, false, {}, {}}) |
38 | { |
39 | } |
40 | |
41 | KIconEngine::KIconEngine(const QString &iconName, const KIconColors &colors, KIconLoader *iconLoader) |
42 | : mIconName(iconName) |
43 | , d(new KIconEnginePrivate{iconLoader, true, colors, {}}) |
44 | { |
45 | } |
46 | |
47 | KIconEngine::~KIconEngine() |
48 | { |
49 | delete d; |
50 | } |
51 | |
52 | static inline int qIconModeToKIconState(QIcon::Mode mode) |
53 | { |
54 | switch (mode) { |
55 | case QIcon::Normal: |
56 | return KIconLoader::DefaultState; |
57 | case QIcon::Active: |
58 | return KIconLoader::ActiveState; |
59 | case QIcon::Disabled: |
60 | return KIconLoader::DisabledState; |
61 | case QIcon::Selected: |
62 | return KIconLoader::SelectedState; |
63 | default: |
64 | return KIconLoader::DefaultState; |
65 | } |
66 | } |
67 | |
68 | QSize KIconEngine::actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) |
69 | { |
70 | return QIconEngine::actualSize(size, mode, state); |
71 | } |
72 | |
73 | void KIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) |
74 | { |
75 | if (!d->mIconLoader) { |
76 | return; |
77 | } |
78 | |
79 | const qreal dpr = painter->device()->devicePixelRatioF(); |
80 | const QPixmap pix = createPixmap(rect.size() * dpr, dpr, mode, state); |
81 | painter->drawPixmap(rect, pix); |
82 | } |
83 | |
84 | QPixmap KIconEngine::createPixmap(const QSize &size, qreal scale, QIcon::Mode mode, QIcon::State state) |
85 | { |
86 | Q_UNUSED(state) |
87 | |
88 | if (scale < 1) { |
89 | scale = 1; |
90 | } |
91 | |
92 | if (size.isEmpty()) { |
93 | return QPixmap(); |
94 | } |
95 | |
96 | if (!d->mIconLoader) { |
97 | QPixmap pm(size); |
98 | pm.setDevicePixelRatio(scale); |
99 | pm.fill(Qt::transparent); |
100 | return pm; |
101 | } |
102 | |
103 | const QSize scaledSize = size / scale; |
104 | |
105 | QString iconPath; |
106 | |
107 | const int kstate = qIconModeToKIconState(mode); |
108 | QPixmap pix = d->mIconLoader->loadScaledIcon(mIconName, |
109 | KIconLoader::Desktop, |
110 | scale, |
111 | scaledSize, |
112 | kstate, |
113 | mOverlays, |
114 | &iconPath, |
115 | false, |
116 | d->mCustomColors ? std::make_optional(d->mColors) : std::nullopt); |
117 | |
118 | if (!iconPath.isEmpty() && !d->mActualIconName.isEmpty()) { |
119 | d->mActualIconName = QFileInfo(iconPath).completeBaseName(); |
120 | } |
121 | |
122 | if (pix.size() == size) { |
123 | return pix; |
124 | } |
125 | |
126 | QPixmap pix2(size); |
127 | pix2.setDevicePixelRatio(scale); |
128 | pix2.fill(QColor(0, 0, 0, 0)); |
129 | |
130 | QPainter painter(&pix2); |
131 | painter.setRenderHint(QPainter::SmoothPixmapTransform); |
132 | const QSizeF targetSize = pix.size().scaled(scaledSize, Qt::KeepAspectRatio); |
133 | QRectF targetRect({0, 0}, targetSize); |
134 | targetRect.moveCenter(QRectF(pix2.rect()).center() / scale); |
135 | painter.drawPixmap(targetRect, pix, pix.rect()); |
136 | |
137 | return pix2; |
138 | } |
139 | |
140 | QPixmap KIconEngine::pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) |
141 | { |
142 | return createPixmap(size, 1 /*scale*/, mode, state); |
143 | } |
144 | |
145 | QPixmap KIconEngine::scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State state, qreal scale) |
146 | { |
147 | return createPixmap(size, scale, mode, state); |
148 | } |
149 | |
150 | QString KIconEngine::iconName() |
151 | { |
152 | if (!d->mActualIconName.isEmpty()) { |
153 | return d->mActualIconName; |
154 | } |
155 | |
156 | if (!d->mIconLoader) { |
157 | return QString(); |
158 | } |
159 | |
160 | const QString iconPath = KIconLoaderPrivate::get(d->mIconLoader)->preferredIconPath(mIconName); |
161 | if (iconPath.isEmpty()) { |
162 | return QString(); |
163 | } |
164 | |
165 | d->mActualIconName = QFileInfo(iconPath).completeBaseName(); |
166 | return d->mActualIconName; |
167 | } |
168 | |
169 | Q_GLOBAL_STATIC_WITH_ARGS(QList<QSize>, |
170 | sSizes, |
171 | (QList<QSize>() << QSize(16, 16) << QSize(22, 22) << QSize(32, 32) << QSize(48, 48) << QSize(64, 64) << QSize(128, 128) |
172 | << QSize(256, 256))) |
173 | |
174 | QList<QSize> KIconEngine::availableSizes(QIcon::Mode mode, QIcon::State state) |
175 | { |
176 | Q_UNUSED(mode); |
177 | Q_UNUSED(state); |
178 | |
179 | if (!d->mIconLoader) { |
180 | return QList<QSize>(); |
181 | } |
182 | |
183 | const bool found = d->mIconLoader->hasIcon(mIconName); |
184 | return found ? *sSizes : QList<QSize>(); |
185 | } |
186 | |
187 | QString KIconEngine::key() const |
188 | { |
189 | return QStringLiteral("KIconEngine" ); |
190 | } |
191 | |
192 | QIconEngine *KIconEngine::clone() const |
193 | { |
194 | return new KIconEngine(mIconName, d->mIconLoader, mOverlays); |
195 | } |
196 | |
197 | bool KIconEngine::read(QDataStream &in) |
198 | { |
199 | in >> mIconName >> mOverlays; |
200 | return true; |
201 | } |
202 | |
203 | bool KIconEngine::write(QDataStream &out) const |
204 | { |
205 | out << mIconName << mOverlays; |
206 | return true; |
207 | } |
208 | |
209 | bool KIconEngine::isNull() |
210 | { |
211 | return !d->mIconLoader || !d->mIconLoader->hasIcon(mIconName); |
212 | } |
213 | |