qcommonstyle.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

            } else {
                const int unit_width = pixelMetric(PM_ProgressBarChunkWidth, pb, widget);
                int u;
                if (unit_width > 1)
                    u = (rect.width() + unit_width / 3) / unit_width;
                else
                    u = w / unit_width;
                int p_v = pb->progress - pb->minimum;
                int t_s = pb->maximum - pb->minimum ? pb->maximum - pb->minimum : 1;

                if (u > 0 && p_v >= INT_MAX / u && t_s >= u) {
                    // scale down to something usable.
                    p_v /= u;
                    t_s /= u;
                }

                // nu < tnu, if last chunk is only a partial chunk
                int tnu, nu;
                tnu = nu = p_v * u / t_s;

                if (nu * unit_width > w)
                    --nu;

                // Draw nu units out of a possible u of unit_width
                // width, each a rectangle bordered by background
                // color, all in a sunken panel with a percentage text
                // display at the end.
                int x = 0;
                int x0 = reverse ? rect.right() - ((unit_width > 1) ? unit_width : fw)
                                 : rect.x() + fw;

                QStyleOptionProgressBarV2 pbBits = *pb;
                pbBits.rect = rect;
                pbBits.palette = pal2;
                int myY = pbBits.rect.y();
                int myHeight = pbBits.rect.height();
                pbBits.state = State_None;
                for (int i = 0; i < nu; ++i) {
                    pbBits.rect.setRect(x0 + x, myY, unit_width, myHeight);
                    pbBits.rect = m.mapRect(pbBits.rect);
                    drawPrimitive(PE_IndicatorProgressChunk, &pbBits, p, widget);
                    x += reverse ? -unit_width : unit_width;
                }

                // Draw the last partial chunk to fill up the
                // progressbar entirely
                if (nu < tnu) {
                    int pixels_left = w - (nu * unit_width);
                    int offset = reverse ? x0 + x + unit_width-pixels_left : x0 + x;
                    pbBits.rect.setRect(offset, myY, pixels_left, myHeight);
                    pbBits.rect = m.mapRect(pbBits.rect);
                    drawPrimitive(PE_IndicatorProgressChunk, &pbBits, p, widget);
                }
            }
        }
        break;
#endif // QT_NO_PROGRESSBAR
    case CE_HeaderLabel:
        if (const QStyleOptionHeader *header = qstyleoption_cast<const QStyleOptionHeader *>(opt)) {
            QRect rect = header->rect;
            if (!header->icon.isNull()) {
                QPixmap pixmap
                    = header->icon.pixmap(pixelMetric(PM_SmallIconSize), (header->state & State_Enabled) ? QIcon::Normal : QIcon::Disabled);
                int pixw = pixmap.width();

                QRect aligned = alignedRect(header->direction, QFlag(header->iconAlignment), pixmap.size(), rect);
                QRect inter = aligned.intersect(rect);
                p->drawPixmap(inter.x(), inter.y(), pixmap, inter.x() - aligned.x(), inter.y() - aligned.y(), inter.width(), inter.height());

                if (header->direction == Qt::LeftToRight)
                    rect.setLeft(rect.left() + pixw + 2);
                else
                    rect.setRight(rect.right() - pixw - 2);
            }
            drawItemText(p, rect, header->textAlignment, header->palette,
                         (header->state & State_Enabled), header->text, QPalette::ButtonText);
        }
        break;
#ifndef QT_NO_TOOLBUTTON
    case CE_ToolButtonLabel:
        if (const QStyleOptionToolButton *toolbutton
                = qstyleoption_cast<const QStyleOptionToolButton *>(opt)) {
            QRect rect = toolbutton->rect;
            int shiftX = 0;
            int shiftY = 0;
            if (toolbutton->state & (State_Sunken | State_On)) {
                shiftX = pixelMetric(PM_ButtonShiftHorizontal, toolbutton, widget);
                shiftY = pixelMetric(PM_ButtonShiftVertical, toolbutton, widget);
            }
            // Arrow type always overrules and is always shown
            bool hasArrow = toolbutton->features & QStyleOptionToolButton::Arrow;
            if ((!hasArrow && toolbutton->icon.isNull()) && !toolbutton->text.isEmpty()
                || toolbutton->toolButtonStyle == Qt::ToolButtonTextOnly) {
                int alignment = Qt::AlignCenter | Qt::TextShowMnemonic;
                if (!styleHint(SH_UnderlineShortcut, opt, widget))
                    alignment |= Qt::TextHideMnemonic;
                rect.translate(shiftX, shiftY);
                drawItemText(p, rect, alignment, toolbutton->palette,
                             opt->state & State_Enabled, toolbutton->text,
                             QPalette::ButtonText);
            } else {
                QPixmap pm;
                QSize pmSize = toolbutton->iconSize;
                if (!toolbutton->icon.isNull()) {
                    QIcon::State state = toolbutton->state & State_On ? QIcon::On : QIcon::Off;
                    QIcon::Mode mode;
                    if (!(toolbutton->state & State_Enabled))
                        mode = QIcon::Disabled;
                    else if ((opt->state & State_MouseOver) && (opt->state & State_AutoRaise))
                        mode = QIcon::Active;
                    else
                        mode = QIcon::Normal;
                    pm = toolbutton->icon.pixmap(toolbutton->rect.size().boundedTo(toolbutton->iconSize),
                                                 mode, state);
                    pmSize = pm.size();
                }

                if (toolbutton->toolButtonStyle != Qt::ToolButtonIconOnly) {
                    p->setFont(toolbutton->font);
                    QRect pr = rect,
                    tr = rect;
                    int alignment = Qt::TextShowMnemonic;
                    if (!styleHint(SH_UnderlineShortcut, opt, widget))
                        alignment |= Qt::TextHideMnemonic;

                    if (toolbutton->toolButtonStyle == Qt::ToolButtonTextUnderIcon) {
                        int fh = p->fontMetrics().height();
                        pr.adjust(0, 3, 0, -fh - 3);
                        tr.adjust(0, pr.bottom(), 0, -3);
                        pr.translate(shiftX, shiftY);
                        if (!hasArrow) {
                            drawItemPixmap(p, pr, Qt::AlignCenter, pm);
                        } else {
                            drawArrow(this, toolbutton, pr, p, widget);
                        }
                        alignment |= Qt::AlignCenter;
                    } else {
                        pr.setWidth(pmSize.width() + 8);
                        tr.adjust(pr.right(), 0, 0, 0);
                        pr.translate(shiftX, shiftY);
                        if (!hasArrow) {
                            drawItemPixmap(p, pr, Qt::AlignCenter, pm);
                        } else {
                            drawArrow(this, toolbutton, pr, p, widget);
                        }
                        alignment |= Qt::AlignLeft | Qt::AlignVCenter;
                    }
                    tr.translate(shiftX, shiftY);
                    drawItemText(p, tr, alignment, toolbutton->palette,
                                 toolbutton->state & State_Enabled, toolbutton->text,
                                 QPalette::ButtonText);
                } else {
                    rect.translate(shiftX, shiftY);
                    if (hasArrow) {
                        drawArrow(this, toolbutton, rect, p, widget);
                    } else {
                        drawItemPixmap(p, rect, Qt::AlignCenter, pm);
                    }
                }
            }
        }
        break;
#endif // QT_NO_TOOLBUTTON
#ifndef QT_NO_TOOLBOX
    case CE_ToolBoxTab:
        if (const QStyleOptionToolBox *tb = qstyleoption_cast<const QStyleOptionToolBox *>(opt)) {
            int d = 20 + tb->rect.height() - 3;
            QPolygon a(7);
            a.setPoint(0, -1, tb->rect.height() + 1);
            a.setPoint(1, -1, 1);
            a.setPoint(2, tb->rect.width() - d, 1);
            a.setPoint(3, tb->rect.width() - 20, tb->rect.height() - 2);
            a.setPoint(4, tb->rect.width() - 1, tb->rect.height() - 2);
            a.setPoint(5, tb->rect.width() - 1, tb->rect.height() + 1);
            a.setPoint(6, -1, tb->rect.height() + 1);

            p->setPen(tb->palette.mid().color().dark(150));
            p->drawPolygon(a);
            p->setPen(tb->palette.light().color());
            p->drawLine(0, 2, tb->rect.width() - d, 2);
            p->drawLine(tb->rect.width() - d - 1, 2, tb->rect.width() - 21, tb->rect.height() - 1);
            p->drawLine(tb->rect.width() - 20, tb->rect.height() - 1,
                        tb->rect.width(), tb->rect.height() - 1);
            p->setBrush(Qt::NoBrush);
        }
        break;
#endif // QT_NO_TOOLBOX
#ifndef QT_NO_TABBAR
    case CE_TabBarTab:
        if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(opt)) {
            drawControl(CE_TabBarTabShape, tab, p, widget);
            drawControl(CE_TabBarTabLabel, tab, p, widget);
        }
        break;
    case CE_TabBarTabShape:
        if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(opt)) {
            p->save();

            QRect rect(tab->rect);
            bool selected = tab->state & State_Selected;
            bool onlyOne = tab->position == QStyleOptionTab::OnlyOneTab;
            int tabOverlap = onlyOne ? 0 : pixelMetric(PM_TabBarTabOverlap, opt, widget);

            if (!selected) {
                switch (tab->shape) {
                case QTabBar::TriangularNorth:
                    rect.adjust(0, 0, 0, -tabOverlap);
                    if(!selected)
                        rect.adjust(1, 1, -1, 0);
                    break;
                case QTabBar::TriangularSouth:
                    rect.adjust(0, tabOverlap, 0, 0);
                    if(!selected)
                        rect.adjust(1, 0, -1, -1);
                    break;
                case QTabBar::TriangularEast:
                    rect.adjust(tabOverlap, 0, 0, 0);
                    if(!selected)
                        rect.adjust(0, 1, -1, -1);
                    break;
                case QTabBar::TriangularWest:
                    rect.adjust(0, 0, -tabOverlap, 0);
                    if(!selected)
                        rect.adjust(1, 1, 0, -1);
                    break;
                default:
                    break;
                }
            }

            p->setPen(QPen(tab->palette.foreground(), 0));
            if (selected) {
                p->setBrush(tab->palette.base());
            } else {
                if (widget && widget->parentWidget())
                    p->setBrush(widget->parentWidget()->palette().background());
                else
                    p->setBrush(tab->palette.background());
            }

            int y;
            int x;
            QPolygon a(10);
            switch (tab->shape) {
            case QTabBar::TriangularNorth:
            case QTabBar::TriangularSouth: {
                a.setPoint(0, 0, -1);
                a.setPoint(1, 0, 0);
                y = rect.height() - 2;
                x = y / 3;
                a.setPoint(2, x++, y - 1);
                ++x;
                a.setPoint(3, x++, y++);
                a.setPoint(4, x, y);

                int i;
                int right = rect.width() - 1;
                for (i = 0; i < 5; ++i)
                    a.setPoint(9 - i, right - a.point(i).x(), a.point(i).y());
                if (tab->shape == QTabBar::TriangularNorth)
                    for (i = 0; i < 10; ++i)
                        a.setPoint(i, a.point(i).x(), rect.height() - 1 - a.point(i).y());

                a.translate(rect.left(), rect.top());
                p->setRenderHint(QPainter::Antialiasing);
                p->translate(0, 0.5);

                QPainterPath path;
                path.addPolygon(a);
                p->drawPath(path);
                break; }
            case QTabBar::TriangularEast:
            case QTabBar::TriangularWest: {
                a.setPoint(0, -1, 0);
                a.setPoint(1, 0, 0);
                x = rect.width() - 2;
                y = x / 3;
                a.setPoint(2, x - 1, y++);
                ++y;
                a.setPoint(3, x++, y++);
                a.setPoint(4, x, y);
                int i;
                int bottom = rect.height() - 1;
                for (i = 0; i < 5; ++i)
                    a.setPoint(9 - i, a.point(i).x(), bottom - a.point(i).y());
                if (tab->shape == QTabBar::TriangularWest)
                    for (i = 0; i < 10; ++i)
                        a.setPoint(i, rect.width() - 1 - a.point(i).x(), a.point(i).y());
                a.translate(rect.left(), rect.top());
                p->setRenderHint(QPainter::Antialiasing);
                p->translate(0.5, 0);
                QPainterPath path;
                path.addPolygon(a);
                p->drawPath(path);
                break; }
            default:
                break;
            }
            p->restore();
        }
        break;
    case CE_TabBarTabLabel:
        if (const QStyleOptionTab *tab = qstyleoption_cast<const QStyleOptionTab *>(opt)) {
            QStyleOptionTabV2 tabV2(*tab);
            QRect tr = tabV2.rect;
            bool verticalTabs = tabV2.shape == QTabBar::RoundedEast
                                || tabV2.shape == QTabBar::RoundedWest
                                || tabV2.shape == QTabBar::TriangularEast