qplatformtheme.cpp

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// 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 "qplatformtheme.h"
 
#include "qplatformtheme_p.h"
 
#include <QtCore/QVariant>
#include <QtCore/QStringList>
#include <QtCore/qfileinfo.h>
#include <qicon.h>
#include <qpalette.h>
#include <qtextformat.h>
#include <private/qiconloader_p.h>
#include <private/qguiapplication_p.h>
#include <qpa/qplatformintegration.h>
#include <qpa/qplatformdialoghelper.h>
 
#include <algorithm>
 
QT_BEGIN_NAMESPACE
 
#if QT_CONFIG(shortcut)
// Table of key bindings. It must be sorted on key sequence:
// The integer value of VK_KEY | Modifier Keys (e.g., VK_META, and etc.)
// A priority of 1 indicates that this is the primary key binding when multiple are defined.
 
enum KeyPlatform {
    KB_Win = (1 << QPlatformTheme::WindowsKeyboardScheme),
    KB_Mac = (1 << QPlatformTheme::MacKeyboardScheme),
    KB_X11 = (1 << QPlatformTheme::X11KeyboardScheme),
    KB_KDE = (1 << QPlatformTheme::KdeKeyboardScheme),
    KB_Gnome = (1 << QPlatformTheme::GnomeKeyboardScheme),
    KB_CDE = (1 << QPlatformTheme::CdeKeyboardScheme),
    KB_All = 0xffff
};
 
const QKeyBinding QPlatformThemePrivate::keyBindings[] = {
    //   StandardKey                            Priority    Key Sequence                            Platforms
    {QKeySequence::HelpContents,            1,          Qt::CTRL | Qt::Key_Question,            KB_Mac},
    {QKeySequence::HelpContents,            0,          Qt::Key_F1,                             KB_Win | KB_X11},
    {QKeySequence::WhatsThis,               1,          Qt::SHIFT | Qt::Key_F1,                 KB_All},
    {QKeySequence::Open,                    1,          Qt::CTRL | Qt::Key_O,                   KB_All},
    {QKeySequence::Close,                   0,          Qt::CTRL | Qt::Key_F4,                  KB_Mac},
    {QKeySequence::Close,                   1,          Qt::CTRL | Qt::Key_F4,                  KB_Win},
    {QKeySequence::Close,                   1,          Qt::CTRL | Qt::Key_W,                   KB_Mac},
    {QKeySequence::Close,                   0,          Qt::CTRL | Qt::Key_W,                   KB_Win | KB_X11},
    {QKeySequence::Save,                    1,          Qt::CTRL | Qt::Key_S,                   KB_All},
    {QKeySequence::New,                     1,          Qt::CTRL | Qt::Key_N,                   KB_All},
    {QKeySequence::Delete,                  0,          Qt::CTRL | Qt::Key_D,                   KB_X11}, //emacs (line edit only)
    {QKeySequence::Delete,                  1,          Qt::Key_Delete,                         KB_All},
    {QKeySequence::Delete,                  0,          Qt::META | Qt::Key_D,                   KB_Mac},
    {QKeySequence::Cut,                     1,          Qt::CTRL | Qt::Key_X,                   KB_All},
    {QKeySequence::Cut,                     0,          Qt::SHIFT | Qt::Key_Delete,             KB_Win | KB_X11}, //## Check if this should work on mac
    {QKeySequence::Cut,                     0,          Qt::Key_F20,                            KB_X11}, //Cut on sun keyboards
    {QKeySequence::Cut,                     0,          Qt::META | Qt::Key_K,                   KB_Mac},
    {QKeySequence::Copy,                    0,          Qt::CTRL | Qt::Key_Insert,              KB_X11 | KB_Win},
    {QKeySequence::Copy,                    1,          Qt::CTRL | Qt::Key_C,                   KB_All},
    {QKeySequence::Copy,                    0,          Qt::Key_F16,                            KB_X11}, //Copy on sun keyboards
    {QKeySequence::Paste,                   0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Insert,  KB_X11},
    {QKeySequence::Paste,                   1,          Qt::CTRL | Qt::Key_V,                   KB_All},
    {QKeySequence::Paste,                   0,          Qt::SHIFT | Qt::Key_Insert,             KB_Win | KB_X11},
    {QKeySequence::Paste,                   0,          Qt::Key_F18,                            KB_X11}, //Paste on sun keyboards
    {QKeySequence::Paste,                   0,          Qt::META | Qt::Key_Y,                   KB_Mac},
    {QKeySequence::Undo,                    0,          Qt::ALT  | Qt::Key_Backspace,           KB_Win},
    {QKeySequence::Undo,                    1,          Qt::CTRL | Qt::Key_Z,                   KB_All},
    {QKeySequence::Undo,                    0,          Qt::Key_F14,                            KB_X11}, //Undo on sun keyboards
    {QKeySequence::Redo,                    0,          Qt::ALT  | Qt::SHIFT | Qt::Key_Backspace,KB_Win},
    {QKeySequence::Redo,                    0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Z,       KB_Mac},
    {QKeySequence::Redo,                    0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Z,       KB_Win | KB_X11},
    {QKeySequence::Redo,                    1,          Qt::CTRL | Qt::Key_Y,                   KB_Win},
    {QKeySequence::Back,                    1,          Qt::ALT  | Qt::Key_Left,                KB_Win | KB_X11},
    {QKeySequence::Back,                    0,          Qt::CTRL | Qt::Key_Left,                KB_Mac},
    {QKeySequence::Back,                    1,          Qt::CTRL | Qt::Key_BracketLeft,         KB_Mac},
    {QKeySequence::Back,                    0,          Qt::Key_Backspace,                      KB_Win},
    {QKeySequence::Forward,                 1,          Qt::ALT  | Qt::Key_Right,               KB_Win | KB_X11},
    {QKeySequence::Forward,                 0,          Qt::CTRL | Qt::Key_Right,               KB_Mac},
    {QKeySequence::Forward,                 1,          Qt::CTRL | Qt::Key_BracketRight,        KB_Mac},
    {QKeySequence::Forward,                 0,          Qt::SHIFT | Qt::Key_Backspace,          KB_Win},
    {QKeySequence::Refresh,                 1,          Qt::CTRL | Qt::Key_R,                   KB_Gnome | KB_Mac},
    {QKeySequence::Refresh,                 0,          Qt::Key_F5,                             KB_Win | KB_X11},
    {QKeySequence::ZoomIn,                  1,          Qt::CTRL | Qt::Key_Plus,                KB_All},
    {QKeySequence::ZoomOut,                 1,          Qt::CTRL | Qt::Key_Minus,               KB_All},
    {QKeySequence::Print,                   1,          Qt::CTRL | Qt::Key_P,                   KB_All},
    {QKeySequence::AddTab,                  1,          Qt::CTRL | Qt::SHIFT | Qt::Key_N,       KB_KDE},
    {QKeySequence::AddTab,                  0,          Qt::CTRL | Qt::Key_T,                   KB_All},
    {QKeySequence::NextChild,               0,          Qt::CTRL | Qt::Key_F6,                  KB_Win},
    {QKeySequence::NextChild,               0,          Qt::CTRL | Qt::Key_Tab,                 KB_Mac}, //different priority from above
    {QKeySequence::NextChild,               1,          Qt::CTRL | Qt::Key_Tab,                 KB_Win | KB_X11},
    {QKeySequence::NextChild,               1,          Qt::CTRL | Qt::Key_BraceRight,          KB_Mac},
    {QKeySequence::NextChild,               0,          Qt::CTRL | Qt::Key_Comma,               KB_KDE},
    {QKeySequence::NextChild,               0,          Qt::Key_Forward,                        KB_All},
    {QKeySequence::PreviousChild,           0,          Qt::CTRL | Qt::SHIFT | Qt::Key_F6,      KB_Win},
    {QKeySequence::PreviousChild,           0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Backtab, KB_Mac },//different priority from above
    {QKeySequence::PreviousChild,           1,          Qt::CTRL | Qt::SHIFT | Qt::Key_Backtab, KB_Win | KB_X11},
    {QKeySequence::PreviousChild,           1,          Qt::CTRL | Qt::Key_BraceLeft,           KB_Mac},
    {QKeySequence::PreviousChild,           0,          Qt::CTRL | Qt::Key_Period,              KB_KDE},
    {QKeySequence::PreviousChild,           0,          Qt::Key_Back,                           KB_All},
    {QKeySequence::Find,                    0,          Qt::CTRL | Qt::Key_F,                   KB_All},
    {QKeySequence::FindNext,                0,          Qt::CTRL | Qt::Key_G,                   KB_Win},
    {QKeySequence::FindNext,                1,          Qt::CTRL | Qt::Key_G,                   KB_Gnome | KB_Mac},
    {QKeySequence::FindNext,                1,          Qt::Key_F3,                             KB_Win},
    {QKeySequence::FindNext,                0,          Qt::Key_F3,                             KB_X11},
    {QKeySequence::FindPrevious,            0,          Qt::CTRL | Qt::SHIFT | Qt::Key_G,       KB_Win},
    {QKeySequence::FindPrevious,            1,          Qt::CTRL | Qt::SHIFT | Qt::Key_G,       KB_Gnome | KB_Mac},
    {QKeySequence::FindPrevious,            1,          Qt::SHIFT | Qt::Key_F3,                 KB_Win},
    {QKeySequence::FindPrevious,            0,          Qt::SHIFT | Qt::Key_F3,                 KB_X11},
    {QKeySequence::Replace,                 0,          Qt::CTRL | Qt::Key_R,                   KB_KDE},
    {QKeySequence::Replace,                 0,          Qt::CTRL | Qt::Key_H,                   KB_Gnome},
    {QKeySequence::Replace,                 0,          Qt::CTRL | Qt::Key_H,                   KB_Win},
    {QKeySequence::SelectAll,               1,          Qt::CTRL | Qt::Key_A,                   KB_All},
    {QKeySequence::Bold,                    1,          Qt::CTRL | Qt::Key_B,                   KB_All},
    {QKeySequence::Italic,                  0,          Qt::CTRL | Qt::Key_I,                   KB_All},
    {QKeySequence::Underline,               1,          Qt::CTRL | Qt::Key_U,                   KB_All},
    {QKeySequence::MoveToNextChar,          1,          Qt::Key_Right,                          KB_All},
    {QKeySequence::MoveToNextChar,          0,          Qt::META | Qt::Key_F,                   KB_Mac},
    {QKeySequence::MoveToPreviousChar,      1,          Qt::Key_Left,                           KB_All},
    {QKeySequence::MoveToPreviousChar,      0,          Qt::META | Qt::Key_B,                   KB_Mac},
    {QKeySequence::MoveToNextWord,          0,          Qt::ALT  | Qt::Key_Right,               KB_Mac},
    {QKeySequence::MoveToNextWord,          0,          Qt::CTRL | Qt::Key_Right,               KB_Win | KB_X11},
    {QKeySequence::MoveToPreviousWord,      0,          Qt::ALT  | Qt::Key_Left,                KB_Mac},
    {QKeySequence::MoveToPreviousWord,      0,          Qt::CTRL | Qt::Key_Left,                KB_Win | KB_X11},
    {QKeySequence::MoveToNextLine,          1,          Qt::Key_Down,                           KB_All},
    {QKeySequence::MoveToNextLine,          0,          Qt::META | Qt::Key_N,                   KB_Mac},
    {QKeySequence::MoveToPreviousLine,      1,          Qt::Key_Up,                             KB_All},
    {QKeySequence::MoveToPreviousLine,      0,          Qt::META | Qt::Key_P,                   KB_Mac},
    {QKeySequence::MoveToNextPage,          0,          Qt::META | Qt::Key_PageDown,            KB_Mac},
    {QKeySequence::MoveToNextPage,          0,          Qt::META | Qt::Key_Down,                KB_Mac},
    {QKeySequence::MoveToNextPage,          0,          Qt::META | Qt::Key_V,                   KB_Mac},
    {QKeySequence::MoveToNextPage,          0,          Qt::ALT  | Qt::Key_PageDown,            KB_Mac },
    {QKeySequence::MoveToNextPage,          1,          Qt::Key_PageDown,                       KB_All},
    {QKeySequence::MoveToPreviousPage,      0,          Qt::META | Qt::Key_PageUp,              KB_Mac},
    {QKeySequence::MoveToPreviousPage,      0,          Qt::META | Qt::Key_Up,                  KB_Mac},
    {QKeySequence::MoveToPreviousPage,      0,          Qt::ALT  | Qt::Key_PageUp,              KB_Mac },
    {QKeySequence::MoveToPreviousPage,      1,          Qt::Key_PageUp,                         KB_All},
    {QKeySequence::MoveToStartOfLine,       0,          Qt::META | Qt::Key_Left,                KB_Mac},
    {QKeySequence::MoveToStartOfLine,       0,          Qt::CTRL | Qt::Key_Left,                KB_Mac },
    {QKeySequence::MoveToStartOfLine,       0,          Qt::Key_Home,                           KB_Win | KB_X11},
    {QKeySequence::MoveToEndOfLine,         0,          Qt::META | Qt::Key_Right,               KB_Mac},
    {QKeySequence::MoveToEndOfLine,         0,          Qt::CTRL | Qt::Key_Right,               KB_Mac },
    {QKeySequence::MoveToEndOfLine,         0,          Qt::Key_End,                            KB_Win | KB_X11},
    {QKeySequence::MoveToEndOfLine,         0,          Qt::CTRL | Qt::Key_E,                   KB_X11},
    {QKeySequence::MoveToStartOfBlock,      0,          Qt::META | Qt::Key_A,                   KB_Mac},
    {QKeySequence::MoveToStartOfBlock,      1,          Qt::ALT  | Qt::Key_Up,                  KB_Mac}, //mac only
    {QKeySequence::MoveToEndOfBlock,        0,          Qt::META | Qt::Key_E,                   KB_Mac},
    {QKeySequence::MoveToEndOfBlock,        1,          Qt::ALT  | Qt::Key_Down,                KB_Mac}, //mac only
    {QKeySequence::MoveToStartOfDocument,   1,          Qt::CTRL | Qt::Key_Up,                  KB_Mac},
    {QKeySequence::MoveToStartOfDocument,   0,          Qt::CTRL | Qt::Key_Home,                KB_Win | KB_X11},
    {QKeySequence::MoveToStartOfDocument,   0,          Qt::Key_Home,                           KB_Mac},
    {QKeySequence::MoveToEndOfDocument,     1,          Qt::CTRL | Qt::Key_Down,                KB_Mac},
    {QKeySequence::MoveToEndOfDocument,     0,          Qt::CTRL | Qt::Key_End,                 KB_Win | KB_X11},
    {QKeySequence::MoveToEndOfDocument,     0,          Qt::Key_End,                            KB_Mac},
    {QKeySequence::SelectNextChar,          0,          Qt::SHIFT | Qt::Key_Right,              KB_All},
    {QKeySequence::SelectPreviousChar,      0,          Qt::SHIFT | Qt::Key_Left,               KB_All},
    {QKeySequence::SelectNextWord,          0,          Qt::ALT  | Qt::SHIFT | Qt::Key_Right,   KB_Mac},
    {QKeySequence::SelectNextWord,          0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Right,   KB_Win | KB_X11},
    {QKeySequence::SelectPreviousWord,      0,          Qt::ALT  | Qt::SHIFT | Qt::Key_Left,    KB_Mac},
    {QKeySequence::SelectPreviousWord,      0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Left,    KB_Win | KB_X11},
    {QKeySequence::SelectNextLine,          0,          Qt::SHIFT | Qt::Key_Down,               KB_All},
    {QKeySequence::SelectPreviousLine,      0,          Qt::SHIFT | Qt::Key_Up,                 KB_All},
    {QKeySequence::SelectNextPage,          0,          Qt::SHIFT | Qt::Key_PageDown,           KB_All},
    {QKeySequence::SelectPreviousPage,      0,          Qt::SHIFT | Qt::Key_PageUp,             KB_All},
    {QKeySequence::SelectStartOfLine,       0,          Qt::META | Qt::SHIFT | Qt::Key_Left,    KB_Mac},
    {QKeySequence::SelectStartOfLine,       1,          Qt::CTRL | Qt::SHIFT | Qt::Key_Left,    KB_Mac },
    {QKeySequence::SelectStartOfLine,       0,          Qt::SHIFT | Qt::Key_Home,               KB_Win | KB_X11},
    {QKeySequence::SelectEndOfLine,         0,          Qt::META | Qt::SHIFT | Qt::Key_Right,   KB_Mac},
    {QKeySequence::SelectEndOfLine,         1,          Qt::CTRL | Qt::SHIFT | Qt::Key_Right,   KB_Mac },
    {QKeySequence::SelectEndOfLine,         0,          Qt::SHIFT | Qt::Key_End,                KB_Win | KB_X11},
    {QKeySequence::SelectStartOfBlock,      1,          Qt::ALT  | Qt::SHIFT | Qt::Key_Up,      KB_Mac}, //mac only
    {QKeySequence::SelectStartOfBlock,      0,          Qt::META | Qt::SHIFT | Qt::Key_A,       KB_Mac},
    {QKeySequence::SelectEndOfBlock,        1,          Qt::ALT  | Qt::SHIFT | Qt::Key_Down,    KB_Mac}, //mac only
    {QKeySequence::SelectEndOfBlock,        0,          Qt::META | Qt::SHIFT | Qt::Key_E,       KB_Mac},
    {QKeySequence::SelectStartOfDocument,   1,          Qt::CTRL | Qt::SHIFT | Qt::Key_Up,      KB_Mac},
    {QKeySequence::SelectStartOfDocument,   0,          Qt::CTRL | Qt::SHIFT | Qt::Key_Home,    KB_Win | KB_X11},
    {QKeySequence::SelectStartOfDocument,   0,          Qt::SHIFT | Qt::Key_Home,               KB_Mac},
    {QKeySequence::SelectEndOfDocument,     1,          Qt::CTRL | Qt::SHIFT | Qt::Key_Down,    KB_Mac},
    {QKeySequence::SelectEndOfDocument,     0,          Qt::CTRL | Qt::SHIFT | Qt::Key_End,     KB_Win | KB_X11},
    {QKeySequence::SelectEndOfDocument,     0,          Qt::SHIFT | Qt::Key_End,                KB_Mac},
    {QKeySequence::DeleteStartOfWord,       0,          Qt::ALT  | Qt::Key_Backspace,           KB_Mac},
    {QKeySequence::DeleteStartOfWord,       0,          Qt::CTRL | Qt::Key_Backspace,           KB_X11 | KB_Win},
    {QKeySequence::DeleteEndOfWord,         0,          Qt::ALT  | Qt::Key_Delete,              KB_Mac},
    {QKeySequence::DeleteEndOfWord,         0,          Qt::CTRL | Qt::Key_Delete,              KB_X11 | KB_Win},
    {QKeySequence::DeleteEndOfLine,         0,          Qt::CTRL | Qt::Key_K,                   KB_X11}, //emacs (line edit only)
    {QKeySequence::InsertParagraphSeparator,0,          Qt::Key_Enter,                          KB_All},
    {QKeySequence::InsertParagraphSeparator,0,          Qt::Key_Return,                         KB_All},
    {QKeySequence::InsertLineSeparator,     0,          Qt::META | Qt::Key_Enter,               KB_Mac},
    {QKeySequence::InsertLineSeparator,     0,          Qt::META | Qt::Key_Return,              KB_Mac},
    {QKeySequence::InsertLineSeparator,     0,          Qt::SHIFT | Qt::Key_Enter,              KB_All},
    {QKeySequence::InsertLineSeparator,     0,          Qt::SHIFT | Qt::Key_Return,             KB_All},
    {QKeySequence::InsertLineSeparator,     0,          Qt::META | Qt::Key_O,                   KB_Mac},
    {QKeySequence::SaveAs,                  0,          Qt::CTRL | Qt::SHIFT | Qt::Key_S,       KB_Gnome | KB_Mac},
    {QKeySequence::Preferences,             0,          Qt::CTRL | Qt::Key_Comma,               KB_Mac},
    {QKeySequence::Quit,                    0,          Qt::CTRL | Qt::Key_Q,                   KB_X11 | KB_Gnome | KB_KDE | KB_Mac},
    {QKeySequence::FullScreen,              1,          Qt::META | Qt::CTRL | Qt::Key_F,        KB_Mac},
    {QKeySequence::FullScreen,              0,          Qt::ALT  | Qt::Key_Enter,               KB_Win},
    {QKeySequence::FullScreen,              0,          Qt::CTRL | Qt::SHIFT | Qt::Key_F,       KB_KDE},
    {QKeySequence::FullScreen,              1,          Qt::CTRL | Qt::Key_F11,                 KB_Gnome},
    {QKeySequence::FullScreen,              1,          Qt::Key_F11,                            KB_Win | KB_KDE},
    {QKeySequence::Deselect,                0,          Qt::CTRL | Qt::SHIFT | Qt::Key_A,       KB_X11},
    {QKeySequence::DeleteCompleteLine,      0,          Qt::CTRL | Qt::Key_U,                   KB_X11},
    {QKeySequence::Backspace,               0,          Qt::META | Qt::Key_H,                   KB_Mac},
    {QKeySequence::Cancel,                  0,          Qt::Key_Escape,                         KB_All},
    {QKeySequence::Cancel,                  0,          Qt::CTRL | Qt::Key_Period,              KB_Mac}
};
 
const uint QPlatformThemePrivate::numberOfKeyBindings = sizeof(QPlatformThemePrivate::keyBindings)/(sizeof(QKeyBinding));
#endif
 
QPlatformThemePrivate::QPlatformThemePrivate()
        : systemPalette(nullptr)
{ }
 
QPlatformThemePrivate::~QPlatformThemePrivate()
{
    delete systemPalette;
}
 
Q_GUI_EXPORT QPalette qt_fusionPalette()
{
    auto theme = QGuiApplicationPrivate::platformTheme();
    const bool darkAppearance = theme
                              ? theme->colorScheme() == Qt::ColorScheme::Dark
                              : false;
    const QColor windowText = darkAppearance ? QColor(240, 240, 240) : Qt::black;
    const QColor backGround = darkAppearance ? QColor(50, 50, 50) : QColor(239, 239, 239);
    const QColor light = backGround.lighter(150);
    const QColor mid = (backGround.darker(130));
    const QColor midLight = mid.lighter(110);
    const QColor base = darkAppearance ? backGround.darker(140) : Qt::white;
    const QColor disabledBase(backGround);
    const QColor dark = backGround.darker(150);
    const QColor darkDisabled = QColor(209, 209, 209).darker(110);
    const QColor text = darkAppearance ? windowText : Qt::black;
    const QColor highlight = QColor(48, 140, 198);
    const QColor hightlightedText = darkAppearance ? windowText : Qt::white;
    const QColor disabledText = darkAppearance ? QColor(130, 130, 130) : QColor(190, 190, 190);
    const QColor button = backGround;
    const QColor shadow = dark.darker(135);
    const QColor disabledShadow = shadow.lighter(150);
    const QColor disabledHighlight(145, 145, 145);
    QColor placeholder = text;
    placeholder.setAlpha(128);
 
    QPalette fusionPalette(windowText, backGround, light, dark, mid, text, base);
    fusionPalette.setBrush(QPalette::Midlight, midLight);
    fusionPalette.setBrush(QPalette::Button, button);
    fusionPalette.setBrush(QPalette::Shadow, shadow);
    fusionPalette.setBrush(QPalette::HighlightedText, hightlightedText);
 
    fusionPalette.setBrush(QPalette::Disabled, QPalette::Text, disabledText);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::WindowText, disabledText);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::ButtonText, disabledText);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::Base, disabledBase);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::Dark, darkDisabled);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::Shadow, disabledShadow);
 
    fusionPalette.setBrush(QPalette::Active, QPalette::Highlight, highlight);
    fusionPalette.setBrush(QPalette::Inactive, QPalette::Highlight, highlight);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::Highlight, disabledHighlight);
 
    fusionPalette.setBrush(QPalette::Active, QPalette::AccentColor, highlight);
    fusionPalette.setBrush(QPalette::Inactive, QPalette::AccentColor, highlight);
    fusionPalette.setBrush(QPalette::Disabled, QPalette::AccentColor, disabledHighlight);
 
    fusionPalette.setBrush(QPalette::PlaceholderText, placeholder);
 
    // Use a more legible light blue on dark backgrounds than the default Qt::blue.
    if (darkAppearance)
        fusionPalette.setBrush(QPalette::Link, highlight);
 
    return fusionPalette;
}
 
void QPlatformThemePrivate::initializeSystemPalette()
{
    Q_ASSERT(!systemPalette);
    systemPalette = new QPalette(qt_fusionPalette());
}
 
QPlatformTheme::QPlatformTheme()
    : d_ptr(new QPlatformThemePrivate)
{
 
}
 
QPlatformTheme::QPlatformTheme(QPlatformThemePrivate *priv)
    : d_ptr(priv)
{ }
 
QPlatformTheme::~QPlatformTheme()
{
 
}
 
bool QPlatformTheme::usePlatformNativeDialog(DialogType type) const
{
    Q_UNUSED(type);
    return false;
}
 
QPlatformDialogHelper *QPlatformTheme::createPlatformDialogHelper(DialogType type) const
{
    Q_UNUSED(type);
    return nullptr;
}
 
Qt::ColorScheme QPlatformTheme::colorScheme() const
{
    return Qt::ColorScheme::Unknown;
}
 
const QPalette *QPlatformTheme::palette(Palette type) const
{
    Q_D(const QPlatformTheme);
    if (type == QPlatformTheme::SystemPalette) {
        if (!d->systemPalette)
            const_cast<QPlatformTheme *>(this)->d_ptr->initializeSystemPalette();
        return d->systemPalette;
    }
    return nullptr;
}
 
const QFont *QPlatformTheme::font(Font type) const
{
    Q_UNUSED(type);
    return nullptr;
}
 
QPixmap QPlatformTheme::standardPixmap(StandardPixmap sp, const QSizeF &size) const
{
    Q_UNUSED(sp);
    Q_UNUSED(size);
    // TODO Should return QCommonStyle pixmaps?
    return QPixmap();
}
 
QIcon QPlatformTheme::fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions) const
{
    Q_UNUSED(fileInfo);
    Q_UNUSED(iconOptions);
    // TODO Should return QCommonStyle pixmaps?
    return QIcon();
}
 
QVariant QPlatformTheme::themeHint(ThemeHint hint) const
{
    // For theme hints which mirror platform integration style hints, query
    // the platform integration. The base QPlatformIntegration::styleHint()
    // function will in turn query QPlatformTheme::defaultThemeHint() if there
    // is no custom value.
    switch (hint) {
    case QPlatformTheme::CursorFlashTime:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::CursorFlashTime);
    case QPlatformTheme::KeyboardInputInterval:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::KeyboardInputInterval);
    case QPlatformTheme::KeyboardAutoRepeatRate:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::KeyboardAutoRepeatRate);
    case QPlatformTheme::MouseDoubleClickInterval:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::MouseDoubleClickInterval);
    case QPlatformTheme::StartDragDistance:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::StartDragDistance);
    case QPlatformTheme::StartDragTime:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::StartDragTime);
    case QPlatformTheme::StartDragVelocity:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::StartDragVelocity);
    case QPlatformTheme::PasswordMaskDelay:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::PasswordMaskDelay);
    case QPlatformTheme::PasswordMaskCharacter:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::PasswordMaskCharacter);
    case QPlatformTheme::MousePressAndHoldInterval:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::MousePressAndHoldInterval);
    case QPlatformTheme::ItemViewActivateItemOnSingleClick:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::ItemViewActivateItemOnSingleClick);
    case QPlatformTheme::UiEffects:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::UiEffects);
    case QPlatformTheme::ShowShortcutsInContextMenus:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::ShowShortcutsInContextMenus);
    case QPlatformTheme::SetFocusOnTouchRelease:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::SetFocusOnTouchRelease);
    case QPlatformTheme::FlickStartDistance:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::FlickStartDistance);
    case QPlatformTheme::FlickMaximumVelocity:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::FlickMaximumVelocity);
    case QPlatformTheme::FlickDeceleration:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::FlickDeceleration);
    case QPlatformTheme::UnderlineShortcut:
        return QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::UnderlineShortcut);
    default:
        return QPlatformTheme::defaultThemeHint(hint);
    }
}
 
QVariant QPlatformTheme::defaultThemeHint(ThemeHint hint)
{
    switch (hint) {
    case QPlatformTheme::CursorFlashTime:
        return QVariant(1000);
    case QPlatformTheme::KeyboardInputInterval:
        return QVariant(400);
    case QPlatformTheme::KeyboardAutoRepeatRate:
        return QVariant(30);
    case QPlatformTheme::MouseDoubleClickInterval:
        return QVariant(400);
    case QPlatformTheme::StartDragDistance:
        return QVariant(10);
    case QPlatformTheme::StartDragTime:
        return QVariant(500);
    case QPlatformTheme::PasswordMaskDelay:
        return QVariant(int(0));
    case QPlatformTheme::PasswordMaskCharacter:
        return QVariant(QChar(u'\x25CF'));
    case QPlatformTheme::StartDragVelocity:
        return QVariant(int(0)); // no limit
    case QPlatformTheme::UseFullScreenForPopupMenu:
        return QVariant(false);
    case QPlatformTheme::WindowAutoPlacement:
        return QVariant(false);
    case QPlatformTheme::DialogButtonBoxLayout:
        return QVariant(int(0));
    case QPlatformTheme::DialogButtonBoxButtonsHaveIcons:
        return QVariant(false);
    case QPlatformTheme::ItemViewActivateItemOnSingleClick:
        return QVariant(false);
    case QPlatformTheme::ToolButtonStyle:
        return QVariant(int(Qt::ToolButtonIconOnly));
    case QPlatformTheme::ToolBarIconSize:
        return QVariant(int(0));
    case QPlatformTheme::SystemIconThemeName:
    case QPlatformTheme::SystemIconFallbackThemeName:
        return QVariant(QString());
    case QPlatformTheme::IconThemeSearchPaths:
        return QVariant(QStringList());
    case QPlatformTheme::IconFallbackSearchPaths:
        return QVariant(QStringList());
    case QPlatformTheme::StyleNames:
        return QVariant(QStringList());
    case QPlatformTheme::ShowShortcutsInContextMenus:
        return QVariant(true);
    case TextCursorWidth:
        return QVariant(1);
    case DropShadow:
        return QVariant(false);
    case MaximumScrollBarDragDistance:
        return QVariant(-1);
    case KeyboardScheme:
        return QVariant(int(WindowsKeyboardScheme));
    case UiEffects:
        return QVariant(int(0));
    case SpellCheckUnderlineStyle:
        return QVariant(int(QTextCharFormat::WaveUnderline));
    case TabFocusBehavior:
        return QVariant(int(Qt::TabFocusAllControls));
    case IconPixmapSizes:
        return QVariant::fromValue(QList<int>());
    case DialogSnapToDefaultButton:
    case ContextMenuOnMouseRelease:
        return QVariant(false);
    case MousePressAndHoldInterval:
        return QVariant(800);
    case MouseDoubleClickDistance:
        {
            bool ok = false;
            const int dist = qEnvironmentVariableIntValue("QT_DBL_CLICK_DIST", &ok);
            return QVariant(ok ? dist : 5);
        }
    case WheelScrollLines:
        return QVariant(3);
    case TouchDoubleTapDistance:
        {
            bool ok = false;
            int dist = qEnvironmentVariableIntValue("QT_DBL_TAP_DIST", &ok);
            if (!ok)
                dist = defaultThemeHint(MouseDoubleClickDistance).toInt(&ok) * 2;
            return QVariant(ok ? dist : 10);
        }
    case MouseQuickSelectionThreshold:
        return QVariant(10);
    case InteractiveResizeAcrossScreens:
        return true;
    case ShowDirectoriesFirst:
        return true;
    case PreselectFirstFileInDirectory:
        return false;
    case ButtonPressKeys:
        return QVariant::fromValue(QList<Qt::Key>({ Qt::Key_Space, Qt::Key_Select }));
    case SetFocusOnTouchRelease:
        return false;
    case FlickStartDistance:
        return QVariant(15);
    case FlickMaximumVelocity:
        return QVariant(2500);
    case FlickDeceleration:
        return QVariant(5000);
    case MenuBarFocusOnAltPressRelease:
        return false;
    case MouseCursorTheme:
        return QVariant(QString());
    case MouseCursorSize:
        return QVariant(QSize(16, 16));
    case UnderlineShortcut:
        return true;
    }
 
    return QVariant();
}
 
QPlatformMenuItem *QPlatformTheme::createPlatformMenuItem() const
{
    return nullptr;
}
 
QPlatformMenu *QPlatformTheme::createPlatformMenu() const
{
    return nullptr;
}
 
QPlatformMenuBar *QPlatformTheme::createPlatformMenuBar() const
{
    return nullptr;
}
 
#ifndef QT_NO_SYSTEMTRAYICON
QPlatformSystemTrayIcon *QPlatformTheme::createPlatformSystemTrayIcon() const
{
    return nullptr;
}
#endif
 
QIconEngine *QPlatformTheme::createIconEngine(const QString &iconName) const
{
    return new QIconLoaderEngine(iconName);
}
 
#if QT_CONFIG(shortcut)
// mixed-mode predicate: all of these overloads are actually needed (but not all for every compiler)
struct ByStandardKey {
    typedef bool result_type;
 
    bool operator()(QKeySequence::StandardKey lhs, QKeySequence::StandardKey rhs) const
    { return lhs < rhs; }
 
    bool operator()(const QKeyBinding& lhs, const QKeyBinding& rhs) const
    { return operator()(lhs.standardKey, rhs.standardKey); }
 
    bool operator()(QKeySequence::StandardKey lhs, const QKeyBinding& rhs) const
    { return operator()(lhs, rhs.standardKey); }
 
    bool operator()(const QKeyBinding& lhs, QKeySequence::StandardKey rhs) const
    { return operator()(lhs.standardKey, rhs); }
};
 
QList<QKeySequence> QPlatformTheme::keyBindings(QKeySequence::StandardKey key) const
{
    const uint platform = QPlatformThemePrivate::currentKeyPlatforms();
    QList <QKeySequence> list;
 
    std::pair<const QKeyBinding *, const QKeyBinding *> range =
        std::equal_range(QPlatformThemePrivate::keyBindings,
                         QPlatformThemePrivate::keyBindings + QPlatformThemePrivate::numberOfKeyBindings,
                         key, ByStandardKey());
 
    for (const QKeyBinding *it = range.first; it < range.second; ++it) {
        if (!(it->platform & platform))
            continue;
 
        uint shortcut = it->shortcut.toCombined();
 
        if (it->priority > 0)
            list.prepend(QKeySequence(shortcut));
        else
            list.append(QKeySequence(shortcut));
    }
 
    return list;
}
#endif
 
QString QPlatformTheme::standardButtonText(int button) const
{
    return QPlatformTheme::defaultStandardButtonText(button);
}
 
#if QT_CONFIG(shortcut)
QKeySequence QPlatformTheme::standardButtonShortcut(int button) const
{
    Q_UNUSED(button);
    return QKeySequence();
}
#endif // QT_CONFIG(shortcut)
 
QString QPlatformTheme::defaultStandardButtonText(int button)
{
    switch (button) {
    case QPlatformDialogHelper::Ok:
        return QCoreApplication::translate("QPlatformTheme", "OK");
    case QPlatformDialogHelper::Save:
        return QCoreApplication::translate("QPlatformTheme", "Save");
    case QPlatformDialogHelper::SaveAll:
        return QCoreApplication::translate("QPlatformTheme", "Save All");
    case QPlatformDialogHelper::Open:
        return QCoreApplication::translate("QPlatformTheme", "Open");
    case QPlatformDialogHelper::Yes:
        return QCoreApplication::translate("QPlatformTheme", "&Yes");
    case QPlatformDialogHelper::YesToAll:
        return QCoreApplication::translate("QPlatformTheme", "Yes to &All");
    case QPlatformDialogHelper::No:
        return QCoreApplication::translate("QPlatformTheme", "&No");
    case QPlatformDialogHelper::NoToAll:
        return QCoreApplication::translate("QPlatformTheme", "N&o to All");
    case QPlatformDialogHelper::Abort:
        return QCoreApplication::translate("QPlatformTheme", "Abort");
    case QPlatformDialogHelper::Retry:
        return QCoreApplication::translate("QPlatformTheme", "Retry");
    case QPlatformDialogHelper::Ignore:
        return QCoreApplication::translate("QPlatformTheme", "Ignore");
    case QPlatformDialogHelper::Close:
        return QCoreApplication::translate("QPlatformTheme", "Close");
    case QPlatformDialogHelper::Cancel:
        return QCoreApplication::translate("QPlatformTheme", "Cancel");
    case QPlatformDialogHelper::Discard:
        return QCoreApplication::translate("QPlatformTheme", "Discard");
    case QPlatformDialogHelper::Help:
        return QCoreApplication::translate("QPlatformTheme", "Help");
    case QPlatformDialogHelper::Apply:
        return QCoreApplication::translate("QPlatformTheme", "Apply");
    case QPlatformDialogHelper::Reset:
        return QCoreApplication::translate("QPlatformTheme", "Reset");
    case QPlatformDialogHelper::RestoreDefaults:
        return QCoreApplication::translate("QPlatformTheme", "Restore Defaults");
    default:
        break;
    }
    return QString();
}
 
QString QPlatformTheme::removeMnemonics(const QString &original)
{
    const auto mnemonicInParentheses = [](QStringView text) {
        /* Format of mnemonics to remove is /\‍(&[^&]\‍)/ but accept full-width
           forms of ( and ) as equivalent, for cross-platform compatibility with
           MS (and consequent behavior of translators, see QTBUG-110829).
        */
        Q_ASSERT(text.size() == 4); // Caller's responsibility.
        constexpr QChar wideOpen = u'\uff08', wideClose = u'\uff09';
        if (!text.startsWith(u'(') && !text.startsWith(wideOpen))
            return false;
        if (text[1] != u'&' || text[2] == u'&')
            return false;
        return text.endsWith(u')') || text.endsWith(wideClose);
    };
    QString returnText(original.size(), u'\0');
    int finalDest = 0;
    QStringView text(original);
    while (!text.isEmpty()) {
        if (text.startsWith(u'&')) {
            text = text.sliced(1);
            if (text.isEmpty())
                break;
        } else if (text.size() >= 4 && mnemonicInParentheses(text.first(4))) {
            // Advance over the matched mnemonic:
            text = text.sliced(4);
            // Also strip any leading space before it:
            while (finalDest > 0 && returnText.at(finalDest - 1).isSpace())
                --finalDest;
            continue;
        }
        returnText[finalDest] = text.front();
        text = text.sliced(1);
        ++finalDest;
    }
    returnText.truncate(finalDest);
    return returnText;
}
 
unsigned QPlatformThemePrivate::currentKeyPlatforms()
{
    const uint keyboardScheme = QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::KeyboardScheme).toInt();
    unsigned result = 1u << keyboardScheme;
#if QT_CONFIG(shortcut)
    if (keyboardScheme == QPlatformTheme::KdeKeyboardScheme
        || keyboardScheme == QPlatformTheme::GnomeKeyboardScheme
        || keyboardScheme == QPlatformTheme::CdeKeyboardScheme)
        result |= KB_X11;
#endif
    return result;
}
 
QString QPlatformTheme::name() const
{
    return d_func()->name;
}
 
QT_END_NAMESPACE
 
#include "moc_qplatformtheme.cpp"