qapplication_x11.cpp

奇趣公司比较新的qt/emd版本

        if (codec)
            QTextCodec::setCodecForTr(codec);
    }

    int w = settings.value(QLatin1String("globalStrut/width")).toInt();
    int h = settings.value(QLatin1String("globalStrut/height")).toInt();
    QSize strut(w, h);
    if (strut.isValid())
        QApplication::setGlobalStrut(strut);

    QStringList effects = settings.value(QLatin1String("GUIEffects")).toStringList();
    QApplication::setEffectEnabled(Qt::UI_General,
                                   effects.contains(QLatin1String("general")));
    QApplication::setEffectEnabled(Qt::UI_AnimateMenu,
                                   effects.contains(QLatin1String("animatemenu")));
    QApplication::setEffectEnabled(Qt::UI_FadeMenu,
                                   effects.contains(QLatin1String("fademenu")));
    QApplication::setEffectEnabled(Qt::UI_AnimateCombo,
                                   effects.contains(QLatin1String("animatecombo")));
    QApplication::setEffectEnabled(Qt::UI_AnimateTooltip,
                                   effects.contains(QLatin1String("animatetooltip")));
    QApplication::setEffectEnabled(Qt::UI_FadeTooltip,
                                   effects.contains(QLatin1String("fadetooltip")));
    QApplication::setEffectEnabled(Qt::UI_AnimateToolBox,
                                   effects.contains(QLatin1String("animatetoolbox")));

    settings.beginGroup(QLatin1String("Font Substitutions"));
    QStringList fontsubs = settings.childKeys();
    if (!fontsubs.isEmpty()) {
        QStringList::Iterator it = fontsubs.begin();
        for (; it != fontsubs.end(); ++it) {
            QString fam = *it;
            QStringList subs = settings.value(fam).toStringList();
            QFont::insertSubstitutions(fam, subs);
        }
    }
    settings.endGroup();

    qt_use_rtl_extensions =
        settings.value(QLatin1String("useRtlExtensions"), false).toBool();

#ifndef QT_NO_XIM
    if (qt_xim_preferred_style == 0) {
        QString ximInputStyle = settings.value(QLatin1String("XIMInputStyle"),
                                               QVariant(QLatin1String("on the spot"))).toString().toLower();
        if (ximInputStyle == QLatin1String("on the spot"))
            qt_xim_preferred_style = XIMPreeditCallbacks | XIMStatusNothing;
        else if (ximInputStyle == QLatin1String("over the spot"))
            qt_xim_preferred_style = XIMPreeditPosition | XIMStatusNothing;
        else if (ximInputStyle == QLatin1String("off the spot"))
            qt_xim_preferred_style = XIMPreeditArea | XIMStatusArea;
        else if (ximInputStyle == QLatin1String("root"))
            qt_xim_preferred_style = XIMPreeditNothing | XIMStatusNothing;
    }
#endif
    QStringList inputMethods = QInputContextFactory::keys();
    if (inputMethods.size() > 2 && inputMethods.contains(QLatin1String("imsw-multi"))) {
        X11->default_im = QLatin1String("imsw-multi");
    } else {
        X11->default_im = settings.value(QLatin1String("DefaultInputMethod"),
                                         QLatin1String("xim")).toString();
    }

    settings.endGroup(); // Qt

    return true;
}


/*! \internal
    Resets the QApplication::instance() pointer to zero
*/
void QApplicationPrivate::reset_instance_pointer()
{ QApplication::self = 0; }


// read the _QT_INPUT_ENCODING property and apply the settings to
// the application
static void qt_set_input_encoding()
{
    Atom type;
    int format;
    ulong  nitems, after = 1;
    unsigned char *data = 0;

    int e = XGetWindowProperty(X11->display, QX11Info::appRootWindow(),
                                ATOM(_QT_INPUT_ENCODING), 0, 1024,
                                False, XA_STRING, &type, &format, &nitems,
                                &after, &data);
    if (e != Success || !nitems || type == XNone) {
        // Always use the locale codec, since we have no examples of non-local
        // XIMs, and since we cannot get a sensible answer about the encoding
        // from the XIM.
        qt_input_mapper = QTextCodec::codecForLocale();

    } else {
        if (!qstricmp((char *)data, "locale"))
            qt_input_mapper = QTextCodec::codecForLocale();
        else
            qt_input_mapper = QTextCodec::codecForName((char *)data);
        // make sure we have an input codec
        if(!qt_input_mapper)
            qt_input_mapper = QTextCodec::codecForName("ISO 8859-1");
    }
    if (qt_input_mapper && qt_input_mapper->mibEnum() == 11) // 8859-8
        qt_input_mapper = QTextCodec::codecForName("ISO 8859-8-I");
    if(data)
        XFree((char *)data);
}

// set font, foreground and background from x11 resources. The
// arguments may override the resource settings.
static void qt_set_x11_resources(const char* font = 0, const char* fg = 0,
                                 const char* bg = 0, const char* button = 0)
{

    QString resFont, resFG, resBG, resButton, resEF, sysFont, selectBackground, selectForeground;

    QApplication::setEffectEnabled(Qt::UI_General, false);
    QApplication::setEffectEnabled(Qt::UI_AnimateMenu, false);
    QApplication::setEffectEnabled(Qt::UI_FadeMenu, false);
    QApplication::setEffectEnabled(Qt::UI_AnimateCombo, false);
    QApplication::setEffectEnabled(Qt::UI_AnimateTooltip, false);
    QApplication::setEffectEnabled(Qt::UI_FadeTooltip, false);
    QApplication::setEffectEnabled(Qt::UI_AnimateToolBox, false);

    bool paletteAlreadySet = false;
    if (QApplication::desktopSettingsAware()) {
        // first, read from settings
        QApplicationPrivate::x11_apply_settings();

        // the call to QApplication::style() below creates the system
        // palette, which breaks the logic after the RESOURCE_MANAGER
        // loop... so I have to save this value to be able to use it later
        paletteAlreadySet = (QApplicationPrivate::sys_pal != 0);

        // second, parse the RESOURCE_MANAGER property
        int format;
        ulong  nitems, after = 1;
        QString res;
        long offset = 0;
        Atom type = XNone;

        while (after > 0) {
            uchar *data = 0;
            if (XGetWindowProperty(X11->display, QX11Info::appRootWindow(0),
                                   ATOM(RESOURCE_MANAGER),
                                   offset, 8192, False, AnyPropertyType,
                                   &type, &format, &nitems, &after,
                                   &data) != Success) {
                res = QString();
                break;
            }
            if (type == XA_STRING)
                res += QString::fromLatin1((char*)data);
            else
                res += QString::fromLocal8Bit((char*)data);
            offset += 2048; // offset is in 32bit quantities... 8192/4 == 2048
            if (data)
                XFree((char *)data);
        }

        QString key, value;
        int l = 0, r;
        QString apn = QString::fromLocal8Bit(appName);
        QString apc = QString::fromLocal8Bit(appClass);
        int apnl = apn.length();
        int apcl = apc.length();
        int resl = res.length();

        while (l < resl) {
            r = res.indexOf(QLatin1Char('\n'), l);
            if (r < 0)
                r = resl;
            while (res.at(l).isSpace())
                l++;
            bool mine = false;
            QChar sc = res.at(l + 1);
            if (res.at(l) == QLatin1Char('*') &&
                (sc == QLatin1Char('f') || sc == QLatin1Char('b') || sc == QLatin1Char('g') ||
                 sc == QLatin1Char('F') || sc == QLatin1Char('B') || sc == QLatin1Char('G') ||
                 sc == QLatin1Char('s') || sc == QLatin1Char('S')
                 // capital T only, since we're looking for "Text.selectSomething"
                 || sc == QLatin1Char('T'))) {
                // OPTIMIZED, since we only want "*[fbgsT].."
                QString item = res.mid(l, r - l).simplified();
                int i = item.indexOf(QLatin1Char(':'));
                key = item.left(i).trimmed().mid(1).toLower();
                value = item.right(item.length() - i - 1).trimmed();
                mine = true;
            } else if (apnl && res.at(l) == apn.at(0) || (appClass && apcl && res.at(l) == apc.at(0))) {
                if (res.mid(l,apnl) == apn && (res.at(l+apnl) == QLatin1Char('.')
                                               || res.at(l+apnl) == QLatin1Char('*'))) {
                    QString item = res.mid(l, r - l).simplified();
                    int i = item.indexOf(QLatin1Char(':'));
                    key = item.left(i).trimmed().mid(apnl+1).toLower();
                    value = item.right(item.length() - i - 1).trimmed();
                    mine = true;
                } else if (res.mid(l,apcl) == apc && (res.at(l+apcl) == QLatin1Char('.')
                                                      || res.at(l+apcl) == QLatin1Char('*'))) {
                    QString item = res.mid(l, r - l).simplified();
                    int i = item.indexOf(QLatin1Char(':'));
                    key = item.left(i).trimmed().mid(apcl+1).toLower();
                    value = item.right(item.length() - i - 1).trimmed();
                    mine = true;
                }
            }

            if (mine) {
                if (!font && key == QLatin1String("systemfont"))
                    sysFont = value.left(value.lastIndexOf(QLatin1Char(':')));
                if (!font && key == QLatin1String("font"))
                    resFont = value;
                else if (!fg && !paletteAlreadySet) {
                    if (key == QLatin1String("foreground"))
                        resFG = value;
                    else if (!bg && key == QLatin1String("background"))
                        resBG = value;
                    else if (!bg && !button && key == QLatin1String("button.background"))
                        resButton = value;
                    else if (key == QLatin1String("text.selectbackground")) {
                        selectBackground = value;
                    } else if (key == QLatin1String("text.selectforeground")) {
                        selectForeground = value;
                    }
                } else if (key == QLatin1String("guieffects"))
                    resEF = value;
                // NOTE: if you add more, change the [fbg] stuff above
            }

            l = r + 1;
        }
    }
    if (!sysFont.isEmpty())
        resFont = sysFont;
    if (resFont.isEmpty())
        resFont = QString::fromLocal8Bit(font);
    if (resFG.isEmpty())
        resFG = QString::fromLocal8Bit(fg);
    if (resBG.isEmpty())
        resBG = QString::fromLocal8Bit(bg);
    if (resButton.isEmpty())
        resButton = QString::fromLocal8Bit(button);
    if (!resFont.isEmpty() && !X11->has_fontconfig) { // set application font
        QFont fnt;
        fnt.setRawName(resFont);

        // the font we get may actually be an alias for another font,
        // so we reset the application font to the real font info.
        if (! fnt.exactMatch()) {
            QFontInfo fontinfo(fnt);
            fnt.setFamily(fontinfo.family());
            fnt.setRawMode(fontinfo.rawMode());

            if (! fnt.rawMode()) {
                fnt.setItalic(fontinfo.italic());
                fnt.setWeight(fontinfo.weight());
                fnt.setUnderline(fontinfo.underline());
                fnt.setStrikeOut(fontinfo.strikeOut());
                fnt.setStyleHint(fontinfo.styleHint());

                if (fnt.pointSize() <= 0 && fnt.pixelSize() <= 0) {
                    // size is all wrong... fix it
                    qreal pointSize = fontinfo.pixelSize() * 72. / (float) QX11Info::appDpiY();
                    if (pointSize <= 0)
                        pointSize = 12;
                    fnt.setPointSize(qRound(pointSize));
                }
            }
        }

        QApplicationPrivate::setSystemFont(fnt);
    }

    if ((button || !resBG.isEmpty() || !resFG.isEmpty())) {// set app colors
        bool allowX11ColorNames = QColor::allowX11ColorNames();
        QColor::setAllowX11ColorNames(true);

        (void) QApplication::style();  // trigger creation of application style and system palettes
        QColor btn;
        QColor bg;
        QColor fg;
        if (!resBG.isEmpty())
            bg = QColor(resBG);
        if (!bg.isValid())
            bg = QApplicationPrivate::sys_pal->color(QPalette::Active, QPalette::Window);

        if (!resFG.isEmpty())
            fg = QColor(resFG);
        if (!fg.isValid())
            fg = QApplicationPrivate::sys_pal->color(QPalette::Active, QPalette::WindowText);

        if (!resButton.isEmpty())
            btn = QColor(resButton);
        else if (!resBG.isEmpty())
            btn = bg;
        if (!btn.isValid())
            btn = QApplicationPrivate::sys_pal->color(QPalette::Active, QPalette::Button);

        int h,s,v;
        fg.getHsv(&h,&s,&v);
        QColor base = Qt::white;
        bool bright_mode = false;
        if (v >= 255 - 50) {
            base = btn.darker(150);
            bright_mode = true;
        }

        QPalette pal(fg, btn, btn.lighter(125), btn.darker(130), btn.darker(120), fg, Qt::white, base, bg);
        QColor disabled((fg.red()   + btn.red())  / 2,
                        (fg.green() + btn.green())/ 2,
                        (fg.blue()  + btn.blue()) / 2);
        pal.setColorGroup(QPalette::Disabled, disabled, btn, btn.lighter(125),
                          btn.darker(130), btn.darker(150), disabled, Qt::white, Qt::white, bg);

        QColor highlight, highlightText;
        if (!selectBackground.isEmpty() && !selectForeground.isEmpty()) {
            highlight = QColor(selectBackground);
            highlightText = QColor(selectForeground);
        }

        if (highlight.isValid() && highlightText.isValid()) {
            pal.setColor(QPalette::Highlight, highlight);
            pal.setColor(QPalette::HighlightedText, highlightText);

            // calculate disabled colors by removing saturation
            highlight.setHsv(highlight.hue(), 0, highlight.value(), highlight.alpha());
            highlightText.setHsv(highlightText.hue(), 0, highlightText.value(), highlightText.alpha());
            pal.setColor(QPalette::Disabled, QPalette::Highlight, highlight);
            pal.setColor(QPalette::Disabled, QPalette::HighlightedText, highlightText);
        } else if (bright_mode) {
            pal.setColor(QPalette::HighlightedText, base);
            pal.setColor(QPalette::Highlight, Qt::white);
            pal.setColor(QPalette::Disabled, QPalette::HighlightedText, base);
            pal.setColor(QPalette::Disabled, QPalette::Highlight, Qt::white);
        } else {
            pal.setColor(QPalette::HighlightedText, Qt::white);
            pal.setColor(QPalette::Highlight, Qt::darkBlue);
            pal.setColor(QPalette::Disabled, QPalette::HighlightedText, Qt::white);
            pal.setColor(QPalette::Disabled, QPalette::Highlight, Qt::darkBlue);
        }

        QApplicationPrivate::setSystemPalette(pal);

        QColor::setAllowX11ColorNames(allowX11ColorNames);
    }

    if (!resEF.isEmpty()) {
        QStringList effects = resEF.split(QLatin1Char(' '));
        QApplication::setEffectEnabled(Qt::UI_General, effects.contains(QLatin1String("general")));
        QApplication::setEffectEnabled(Qt::UI_AnimateMenu,
                                       effects.contains(QLatin1String("animatemenu")));
        QApplication::setEffectEnabled(Qt::UI_FadeMenu,
                                       effects.contains(QLatin1String("fademenu")));
        QApplication::setEffectEnabled(Qt::UI_AnimateCombo,
                                       effects.contains(QLatin1String("animatecombo")));
        QApplication::setEffectEnabled(Qt::UI_AnimateTooltip,
                                       effects.contains(QLatin1String("animatetooltip")));
        QApplication::setEffectEnabled(Qt::UI_FadeTooltip,