| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QSTYLE_P_H |
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| 5 | #define QSTYLE_P_H |
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| 6 | |
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| 7 | #include "private/qobject_p.h" |
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| 8 | #include <QtGui/qguiapplication.h> |
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| 9 | #include <QtWidgets/qstyle.h> |
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| 10 | |
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| 11 | QT_BEGIN_NAMESPACE |
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| 12 | |
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| 13 | // |
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| 14 | // W A R N I N G |
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| 15 | // ------------- |
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| 16 | // |
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| 17 | // This file is not part of the Qt API. It exists for the convenience |
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| 18 | // of qstyle_*.cpp. This header file may change from version to version |
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| 19 | // without notice, or even be removed. |
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| 20 | // |
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| 21 | // We mean it. |
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| 22 | // |
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| 23 | |
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| 24 | // Private class |
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| 25 | |
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| 26 | class QStyle; |
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| 27 | |
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| 28 | class QStylePrivate: public QObjectPrivate |
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| 29 | { |
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| 30 | Q_DECLARE_PUBLIC(QStyle) |
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| 31 | public: |
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| 32 | inline QStylePrivate() |
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| 33 | : layoutSpacingIndex(-1), proxyStyle(nullptr) {} |
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| 34 | |
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| 35 | static bool (); |
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| 36 | |
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| 37 | mutable int layoutSpacingIndex; |
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| 38 | QStyle *proxyStyle; |
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| 39 | QString name; |
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| 40 | }; |
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| 41 | |
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| 42 | inline QImage styleCacheImage(const QSize &size) |
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| 43 | { |
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| 44 | const qreal pixelRatio = qApp->devicePixelRatio(); |
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| 45 | QImage cacheImage = QImage(size * pixelRatio, QImage::Format_ARGB32_Premultiplied); |
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| 46 | cacheImage.setDevicePixelRatio(pixelRatio); |
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| 47 | return cacheImage; |
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| 48 | } |
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| 49 | |
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| 50 | inline QPixmap styleCachePixmap(const QSize &size) |
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| 51 | { |
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| 52 | const qreal pixelRatio = qApp->devicePixelRatio(); |
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| 53 | QPixmap cachePixmap = QPixmap(size * pixelRatio); |
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| 54 | cachePixmap.setDevicePixelRatio(pixelRatio); |
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| 55 | return cachePixmap; |
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| 56 | } |
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| 57 | |
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| 58 | #define BEGIN_STYLE_PIXMAPCACHE(a) \ |
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| 59 | QRect rect = option->rect; \ |
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| 60 | QPixmap internalPixmapCache; \ |
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| 61 | QImage imageCache; \ |
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| 62 | QPainter *p = painter; \ |
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| 63 | const QString unique = QStyleHelper::uniqueName((a), option, option->rect.size()); \ |
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| 64 | int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \ |
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| 65 | const bool doPixmapCache = (!option->rect.isEmpty()) \ |
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| 66 | && ((txType <= QTransform::TxTranslate) || (painter->deviceTransform().type() == QTransform::TxScale)); \ |
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| 67 | if (doPixmapCache && QPixmapCache::find(unique, &internalPixmapCache)) { \ |
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| 68 | painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \ |
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| 69 | } else { \ |
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| 70 | if (doPixmapCache) { \ |
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| 71 | rect.setRect(0, 0, option->rect.width(), option->rect.height()); \ |
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| 72 | imageCache = styleCacheImage(option->rect.size()); \ |
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| 73 | imageCache.fill(0); \ |
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| 74 | p = new QPainter(&imageCache); \ |
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| 75 | } |
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| 76 | |
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| 77 | |
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| 78 | |
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| 79 | #define END_STYLE_PIXMAPCACHE \ |
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| 80 | if (doPixmapCache) { \ |
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| 81 | p->end(); \ |
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| 82 | delete p; \ |
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| 83 | internalPixmapCache = QPixmap::fromImage(imageCache); \ |
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| 84 | painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \ |
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| 85 | QPixmapCache::insert(unique, internalPixmapCache); \ |
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| 86 | } \ |
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| 87 | } |
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| 88 | |
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| 89 | QT_END_NAMESPACE |
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| 90 | |
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| 91 | #endif //QSTYLE_P_H |
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| 92 | |
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