qcommonstyle.cpp

奇趣公司比较新的qt/emd版本

            if (!pix.isNull())
                drawItemPixmap(p,mbi->rect, alignment, pix);
            else
                drawItemText(p, mbi->rect, alignment, mbi->palette, mbi->state & State_Enabled,
                             mbi->text, QPalette::ButtonText);
        }
        break;
    case CE_MenuBarEmptyArea:
        if (widget && !widget->testAttribute(Qt::WA_NoSystemBackground))
            p->eraseRect(opt->rect);
        break;
#endif // QT_NO_MENUBAR
#ifndef QT_NO_PROGRESSBAR
    case CE_ProgressBar:
        if (const QStyleOptionProgressBar *pb
                = qstyleoption_cast<const QStyleOptionProgressBar *>(opt)) {
            QStyleOptionProgressBarV2 subopt = *pb;
            subopt.rect = subElementRect(SE_ProgressBarGroove, pb, widget);
            drawControl(CE_ProgressBarGroove, &subopt, p, widget);
            subopt.rect = subElementRect(SE_ProgressBarContents, pb, widget);
            drawControl(CE_ProgressBarContents, &subopt, p, widget);
            if (pb->textVisible) {
                subopt.rect = subElementRect(SE_ProgressBarLabel, pb, widget);
                drawControl(CE_ProgressBarLabel, &subopt, p, widget);
            }
        }
        break;
    case CE_ProgressBarGroove:
        qDrawShadePanel(p, opt->rect, opt->palette, true, 1,
                        &opt->palette.brush(QPalette::Window));
        break;
    case CE_ProgressBarLabel:
        if (const QStyleOptionProgressBar *pb = qstyleoption_cast<const QStyleOptionProgressBar *>(opt)) {
            bool vertical = false;
            if (const QStyleOptionProgressBarV2 *pb2 = qstyleoption_cast<const QStyleOptionProgressBarV2 *>(opt)) {
                vertical = (pb2->orientation == Qt::Vertical);
            }
            if (!vertical) {
                QPalette::ColorRole textRole = QPalette::NoRole;
                if ((pb->textAlignment & Qt::AlignCenter) && pb->textVisible
                    && ((qint64(pb->progress) - qint64(pb->minimum)) * 2 >= (qint64(pb->maximum) - qint64(pb->minimum)))) {
                    textRole = QPalette::HighlightedText;
                    //Draw text shadow, This will increase readability when the background of same color
                    QRect shadowRect(pb->rect);
                    shadowRect.translate(1,1);
                    QColor shadowColor = (pb->palette.color(textRole).value() <= 128)
                       ? QColor(255,255,255,160) : QColor(0,0,0,160);
                    QPalette shadowPalette = pb->palette;
                    shadowPalette.setColor(textRole, shadowColor);
                    drawItemText(p, shadowRect, Qt::AlignCenter | Qt::TextSingleLine, shadowPalette,
                                 pb->state & State_Enabled, pb->text, textRole);
                }
                drawItemText(p, pb->rect, Qt::AlignCenter | Qt::TextSingleLine, pb->palette,
                             pb->state & State_Enabled, pb->text, textRole);
            }
        }
        break;
    case CE_ProgressBarContents:
        if (const QStyleOptionProgressBar *pb = qstyleoption_cast<const QStyleOptionProgressBar *>(opt)) {

            QRect rect = pb->rect;
            bool vertical = false;
            bool inverted = false;
            qint64 minimum = qint64(pb->minimum);
            qint64 maximum = qint64(pb->maximum);
            qint64 progress = qint64(pb->progress);

            // Get extra style options if version 2
            const QStyleOptionProgressBarV2 *pb2 = qstyleoption_cast<const QStyleOptionProgressBarV2 *>(opt);
            if (pb2) {
                vertical = (pb2->orientation == Qt::Vertical);
                inverted = pb2->invertedAppearance;
            }
            QMatrix m;

            if (vertical) {
                rect = QRect(rect.y(), rect.x(), rect.height(), rect.width()); // flip width and height
                m.rotate(90);
                m.translate(0, -(rect.height() + rect.y()*2));
            }

            QPalette pal2 = pb->palette;
            // Correct the highlight color if it is the same as the background
            if (pal2.highlight() == pal2.background())
                pal2.setColor(QPalette::Highlight, pb->palette.color(QPalette::Active,
                                                                     QPalette::Highlight));
            bool reverse = ((!vertical && (pb->direction == Qt::RightToLeft)) || vertical);
            if (inverted)
                reverse = !reverse;
            int w = rect.width();
            if (pb->minimum == 0 && pb->maximum == 0) {
                // draw busy indicator
                int x = (progress - minimum) % (w * 2);
                if (x > w)
                    x = 2 * w - x;
                x = reverse ? rect.right() - x : x + rect.x();
                p->setPen(QPen(pal2.highlight().color(), 4));
                p->drawLine(x, rect.y(), x, rect.height());
            } else {
                const int unit_width = pixelMetric(PM_ProgressBarChunkWidth, pb, widget);
                if (!unit_width)
                    return;

                int u;
                if (unit_width > 1)
                    u = ((rect.width() + unit_width) / unit_width);
                else
                    u = w / unit_width;
                qint64 p_v = progress - minimum;
                qint64 t_s = (maximum - minimum) ? (maximum - minimum) : qint64(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 : 0)
                                 : rect.x();

                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(QRectF(pbBits.rect)).toRect();
                    drawPrimitive(PE_IndicatorProgressChunk, &pbBits, p, widget);
                    x += reverse ? -unit_width : unit_width;
                }

                // Draw the last partial chunk to fill up the
                // progress bar 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(QRectF(pbBits.rect)).toRect();
                    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.intersected(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);
            }
            if (header->state & QStyle::State_On) {
                QFont fnt = p->font();
                fnt.setBold(true);
                p->setFont(fnt);
            }
            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) {
                        pr.setHeight(pmSize.height() + 6);

                        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, QStyle::visualRect(opt->direction, rect, pr), Qt::AlignCenter, pm);
                        } else {
                            drawArrow(this, toolbutton, pr, p, widget);
                        }
                        alignment |= Qt::AlignLeft | Qt::AlignVCenter;
                    }
                    tr.translate(shiftX, shiftY);
                    drawItemText(p, QStyle::visualRect(opt->direction, rect, 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)) {
            drawControl(CE_ToolBoxTabShape, tb, p, widget);
            drawControl(CE_ToolBoxTabLabel, tb, p, widget);
        }
        break;
    case CE_ToolBoxTabShape:
        if (const QStyleOptionToolBox *tb = qstyleoption_cast<const QStyleOptionToolBox *>(opt)) {
            int d = 20 + tb->rect.height() - 3;
            QPolygon a(7);
            if (tb->direction != Qt::RightToLeft) {
                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);
            } else {
                a.setPoint(0, tb->rect.width(), tb->rect.height() + 1);
                a.setPoint(1, tb->rect.width(), 1);
                a.setPoint(2, d - 1, 1);
                a.setPoint(3, 20 - 1, tb->rect.height() - 2);
                a.setPoint(4, 0, tb->rect.height() - 2);
                a.setPoint(5, 0, tb->rect.height() + 1);
                a.setPoint(6, tb->rect.width(), tb->rect.height() + 1);
            }

            p->setPen(tb->palette.mid().color().darker(150));
            p->drawPolygon(a);
            p->setPen(tb->palette.light().color());
            if (tb->direction != Qt::RightToLeft) {
                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);