Qt自定义控件

  • 1. Qt自定义按钮
  • 2. Qt
  • 3. Qt
  • 4. Qt
  • 5. Qt

1. Qt自定义按钮

void CButton::paintEvent(QPaintEvent *){QPainter painter(this);painter.setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);paintBackground(&painter);paintIcon(&painter);paintTextBackground(&painter);paintText(&painter);}void CButton::paintBackground(QPainter * painter){painter->save();QPainterPath path;QBrush brush;brush.setStyle(Qt::NoBrush);QPen pen;pen.setStyle(Qt::SolidLine);pen.setWidth(m_BorderWidth);//整体外框也分别会有三种状态if (isChecked()){brush.setColor(m_CheckedBackgroundColor);pen.setColor(m_CheckedBorderColor);}else if(!isEnabled()){brush.setColor(m_DisabledBackgroundColor);pen.setColor(m_DisableBorderColor);}else{brush.setColor(m_NormalBackgroundColor);pen.setColor(m_NormalBorderColor);}painter->setBrush(brush);QRect rect = QRect(0,0,this->width(),this->height());painter->setPen(pen);path.addRoundedRect(rect, m_BorderRadius, m_BorderRadius);//设置允许裁剪，让圆角更自然painter->setClipPath(path);painter->setClipping(true);painter->drawPath(path);painter->restore();}void CButton::paintIcon(QPainter *painter){painter->save();int iXpos= 0;int iYpos= 0;QPixmap pixmap;if (isChecked()){pixmap = m_CheckedIconPixmap;}else if (!isEnabled()){pixmap = m_DisabledIconPixmap;}else{pixmap = m_IconPixmap;}int offsetWidth = 0;int offsetHeight = 0;QSize pixmapSize(pixmap.width(), pixmap.height());if (pixmap.width() > pixmap.height()){if (pixmap.width() > m_IconSize.rwidth()){int temp = m_IconSize.rwidth();offsetWidth = pixmap.width() - m_IconSize.rwidth();int tem = pixmap.height()-offsetWidth;pixmapSize=QSize(temp, tem);}}else if (pixmap.height() > pixmap.width()){if (pixmap.height() > m_IconSize.height()){int temp = m_IconSize.rheight();offsetHeight = pixmap.height() - m_IconSize.rheight();int tem = pixmap.width()-offsetHeight;pixmapSize=QSize(tem, temp);}}else{pixmapSize = QSize(pixmap.width(), pixmap.height());}switch (m_IconSeat){case E_ICON_LEFT:{iXpos = m_IconMargin + ((m_IconSize.rwidth()- pixmapSize.rwidth()) / 2);iYpos = (this->rect().height() - pixmapSize.rheight()) / 2;pixmap = pixmap.scaled(pixmapSize, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);painter->drawPixmap(iXpos, iYpos, pixmapSize.rwidth(), pixmapSize.rheight(), pixmap);}break;}painter->restore();}void CButton::paintTextBackground(QPainter * painter){painter->save();QBrush brush;brush.setStyle(Qt::SolidPattern);painter->setRenderHint(QPainter::Antialiasing);QPainterPath path;switch (m_IconSeat){case E_ICON_LEFT:{int posX = m_IconSize.rwidth()+(2*m_IconMargin);int posY = m_TextPixmapMargin ;int textPixmapWidth = this->width()-m_IconSize.rwidth()-(2*m_IconMargin)-m_TextPixmapMargin;int textPixmapHeight = this->height()-(2*m_TextPixmapMargin);m_TextPixmapRect = QRectF(posX, posY, textPixmapWidth, textPixmapHeight);path.addRoundedRect(m_TextPixmapRect, m_BorderRadius, m_BorderRadius);//设置允许裁剪，让圆角更自然painter->setClipPath(path);painter->setClipping(true);}break;}painter->setPen(Qt::NoPen);if (isChecked()){brush.setColor(m_CheckedBackgroundColor);}else if(!isEnabled()){brush.setColor(m_DisabledBackgroundColor);}else{brush.setColor(m_NormalBackgroundColor);}painter->fillPath(path, brush);painter->drawPath(path);painter->restore();}void CButton::paintText(QPainter * painter){painter->save();painter->setFont(QFont(m_TextFont, m_TextSize));//设置字体QColor color;if (isChecked()){color = m_CheckedTextColor;}else if (!isEnabled()){color = m_DisabledTextColor;}else{color = m_TextColor;}painter->setPen(QPen(color, m_TextWidth, Qt::SolidLine));//设置字体颜色painter->drawText(m_TextPixmapRect, Qt::AlignHCenter | Qt::AlignVCenter, m_ButtonText);//画一行文字painter->restore();}

2. Qt

3. Qt

4. Qt

5. Qt