norwegianwoodstyle.cpp Example File

widgets/styles/norwegianwoodstyle.cpp
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#include <QtWidgets> #include "norwegianwoodstyle.h" NorwegianWoodStyle::NorwegianWoodStyle() : QProxyStyle(QStyleFactory::create("windows")) { } void NorwegianWoodStyle::polish(QPalette &palette) { QColor brown(212, 140, 95); QColor beige(236, 182, 120); QColor slightlyOpaqueBlack(0, 0, 0, 63); QImage backgroundImage(":/images/woodbackground.png"); QImage buttonImage(":/images/woodbutton.png"); QImage midImage = buttonImage.convertToFormat(QImage::Format_RGB32); QPainter painter; painter.begin(&midImage); painter.setPen(Qt::NoPen); painter.fillRect(midImage.rect(), slightlyOpaqueBlack); painter.end(); palette = QPalette(brown); palette.setBrush(QPalette::BrightText, Qt::white); palette.setBrush(QPalette::Base, beige); palette.setBrush(QPalette::Highlight, Qt::darkGreen); setTexture(palette, QPalette::Button, buttonImage); setTexture(palette, QPalette::Mid, midImage); setTexture(palette, QPalette::Window, backgroundImage); QBrush brush = palette.background(); brush.setColor(brush.color().dark()); palette.setBrush(QPalette::Disabled, QPalette::WindowText, brush); palette.setBrush(QPalette::Disabled, QPalette::Text, brush); palette.setBrush(QPalette::Disabled, QPalette::ButtonText, brush); palette.setBrush(QPalette::Disabled, QPalette::Base, brush); palette.setBrush(QPalette::Disabled, QPalette::Button, brush); palette.setBrush(QPalette::Disabled, QPalette::Mid, brush); } void NorwegianWoodStyle::polish(QWidget *widget) { if (qobject_cast<QPushButton *>(widget) || qobject_cast<QComboBox *>(widget)) widget->setAttribute(Qt::WA_Hover, true); } void NorwegianWoodStyle::unpolish(QWidget *widget) { if (qobject_cast<QPushButton *>(widget) || qobject_cast<QComboBox *>(widget)) widget->setAttribute(Qt::WA_Hover, false); } int NorwegianWoodStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const { switch (metric) { case PM_ComboBoxFrameWidth: return 8; case PM_ScrollBarExtent: return QProxyStyle::pixelMetric(metric, option, widget) + 4; default: return QProxyStyle::pixelMetric(metric, option, widget); } } int NorwegianWoodStyle::styleHint(StyleHint hint, const QStyleOption *option, const QWidget *widget, QStyleHintReturn *returnData) const { switch (hint) { case SH_DitherDisabledText: return int(false); case SH_EtchDisabledText: return int(true); default: return QProxyStyle::styleHint(hint, option, widget, returnData); } } void NorwegianWoodStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const { switch (element) { case PE_PanelButtonCommand: { int delta = (option->state & State_MouseOver) ? 64 : 0; QColor slightlyOpaqueBlack(0, 0, 0, 63); QColor semiTransparentWhite(255, 255, 255, 127 + delta); QColor semiTransparentBlack(0, 0, 0, 127 - delta); int x, y, width, height; option->rect.getRect(&x, &y, &width, &height); QPainterPath roundRect = roundRectPath(option->rect); int radius = qMin(width, height) / 2; QBrush brush; bool darker; const QStyleOptionButton *buttonOption = qstyleoption_cast<const QStyleOptionButton *>(option); if (buttonOption && (buttonOption->features & QStyleOptionButton::Flat)) { brush = option->palette.background(); darker = (option->state & (State_Sunken | State_On)); } else { if (option->state & (State_Sunken | State_On)) { brush = option->palette.mid(); darker = !(option->state & State_Sunken); } else { brush = option->palette.button(); darker = false; } } painter->save(); painter->setRenderHint(QPainter::Antialiasing, true); painter->fillPath(roundRect, brush); if (darker) painter->fillPath(roundRect, slightlyOpaqueBlack); int penWidth; if (radius < 10) penWidth = 3; else if (radius < 20) penWidth = 5; else penWidth = 7; QPen topPen(semiTransparentWhite, penWidth); QPen bottomPen(semiTransparentBlack, penWidth); if (option->state & (State_Sunken | State_On)) qSwap(topPen, bottomPen); int x1 = x; int x2 = x + radius; int x3 = x + width - radius; int x4 = x + width; if (option->direction == Qt::RightToLeft) { qSwap(x1, x4); qSwap(x2, x3); } QPolygon topHalf; topHalf << QPoint(x1, y) << QPoint(x4, y) << QPoint(x3, y + radius) << QPoint(x2, y + height - radius) << QPoint(x1, y + height); painter->setClipPath(roundRect); painter->setClipRegion(topHalf, Qt::IntersectClip); painter->setPen(topPen); painter->drawPath(roundRect); QPolygon bottomHalf = topHalf; bottomHalf[0] = QPoint(x4, y + height); painter->setClipPath(roundRect); painter->setClipRegion(bottomHalf, Qt::IntersectClip); painter->setPen(bottomPen); painter->drawPath(roundRect); painter->setPen(option->palette.foreground().color()); painter->setClipping(false); painter->drawPath(roundRect); painter->restore(); } break; default: QProxyStyle::drawPrimitive(element, option, painter, widget); } } void NorwegianWoodStyle::drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const { switch (element) { case CE_PushButtonLabel: { QStyleOptionButton myButtonOption; const QStyleOptionButton *buttonOption = qstyleoption_cast<const QStyleOptionButton *>(option); if (buttonOption) { myButtonOption = *buttonOption; if (myButtonOption.palette.currentColorGroup() != QPalette::Disabled) { if (myButtonOption.state & (State_Sunken | State_On)) { myButtonOption.palette.setBrush(QPalette::ButtonText, myButtonOption.palette.brightText()); } } } QProxyStyle::drawControl(element, &myButtonOption, painter, widget); } break; default: QProxyStyle::drawControl(element, option, painter, widget); } } void NorwegianWoodStyle::setTexture(QPalette &palette, QPalette::ColorRole role, const QImage &image) { for (int i = 0; i < QPalette::NColorGroups; ++i) { QBrush brush(image); brush.setColor(palette.brush(QPalette::ColorGroup(i), role).color()); palette.setBrush(QPalette::ColorGroup(i), role, brush); } } QPainterPath NorwegianWoodStyle::roundRectPath(const QRect &rect) { int radius = qMin(rect.width(), rect.height()) / 2; int diam = 2 * radius; int x1, y1, x2, y2; rect.getCoords(&x1, &y1, &x2, &y2); QPainterPath path; path.moveTo(x2, y1 + radius); path.arcTo(QRect(x2 - diam, y1, diam, diam), 0.0, +90.0); path.lineTo(x1 + radius, y1); path.arcTo(QRect(x1, y1, diam, diam), 90.0, +90.0); path.lineTo(x1, y2 - radius); path.arcTo(QRect(x1, y2 - diam, diam, diam), 180.0, +90.0); path.lineTo(x1 + radius, y2); path.arcTo(QRect(x2 - diam, y2 - diam, diam, diam), 270.0, +90.0); path.closeSubpath(); return path; }