m_data(),
m_styleOption(),
m_scrollOrientation(Qt::Vertical),
- m_leftBorderCache(0),
- m_rightBorderCache(0),
- m_outlineColor()
+ m_itemIndex(-1),
+ m_lineColor(),
+ m_roleColor(),
+ m_roleBounds()
{
}
KItemListGroupHeader::~KItemListGroupHeader()
{
- deleteCache();
}
void KItemListGroupHeader::setRole(const QByteArray& role)
m_scrollOrientation = orientation;
if (orientation == Qt::Vertical) {
m_dirtyCache = true;
- } else {
- deleteCache();
}
scrollOrientationChanged(orientation, previous);
}
}
+void KItemListGroupHeader::setItemIndex(int index)
+{
+ if (m_itemIndex != index) {
+ const int previous = m_itemIndex;
+ m_itemIndex = index;
+ m_dirtyCache = true;
+ itemIndexChanged(m_itemIndex, previous);
+ }
+}
+
+int KItemListGroupHeader::itemIndex() const
+{
+ return m_itemIndex;
+}
+
Qt::Orientation KItemListGroupHeader::scrollOrientation() const
{
return m_scrollOrientation;
Q_UNUSED(option);
Q_UNUSED(widget);
- if (m_scrollOrientation == Qt::Horizontal) {
- Q_ASSERT(!m_leftBorderCache);
- Q_ASSERT(!m_rightBorderCache);
- return;
- }
-
if (m_dirtyCache) {
updateCache();
}
- const int leftBorderX = m_leftBorderCache->width() + 1;
- const int rightBorderX = size().width() - m_rightBorderCache->width() - 2;
+ if (m_itemIndex == 0) {
+ // No top- or left-line should be drawn for the first group-header
+ return;
+ }
- painter->setPen(m_outlineColor);
- painter->drawLine(leftBorderX, 1, rightBorderX, 1);
+ painter->setPen(m_lineColor);
- painter->drawPixmap(1, 1, *m_leftBorderCache);
- painter->drawPixmap(rightBorderX, 1, *m_rightBorderCache);
+ if (m_scrollOrientation == Qt::Horizontal) {
+ painter->drawLine(0, 0, 0, size().height() - 1);
+ } else {
+ painter->drawLine(0, 0, size().width() - 1, 0);
+ }
+}
+
+QRectF KItemListGroupHeader::roleBounds() const
+{
+ return m_roleBounds;
+}
+
+QColor KItemListGroupHeader::roleColor() const
+{
+ return m_roleColor;
}
void KItemListGroupHeader::roleChanged(const QByteArray& current, const QByteArray& previous)
Q_UNUSED(previous);
}
+void KItemListGroupHeader::itemIndexChanged(int current, int previous)
+{
+ Q_UNUSED(current);
+ Q_UNUSED(previous);
+}
+
void KItemListGroupHeader::resizeEvent(QGraphicsSceneResizeEvent* event)
{
QGraphicsWidget::resizeEvent(event);
{
Q_ASSERT(m_dirtyCache);
- deleteCache();
+ // Calculate the role- and line-color. No alphablending is used for
+ // performance reasons.
+ const QColor c1 = m_styleOption.palette.text().color();
+ const QColor c2 = m_styleOption.palette.base().color();
+ m_lineColor = mixedColor(c1, c2, 10);
+ m_roleColor = mixedColor(c1, c2, 70);
- const int length = qMax(int(size().height() - 1), 1);
- m_leftBorderCache = new QPixmap(length, length);
- m_leftBorderCache->fill(Qt::transparent);
+ const int padding = qMax(1, m_styleOption.padding);
+ const int horizontalMargin = qMax(2, m_styleOption.horizontalMargin);
- m_rightBorderCache = new QPixmap(length, length);
- m_rightBorderCache->fill(Qt::transparent);
+ const QFontMetrics fontMetrics(m_styleOption.font);
+ const qreal roleHeight = fontMetrics.height();
- // Calculate the outline color. No alphablending is used for
- // performance reasons.
- const QColor c1 = m_styleOption.palette.text().color();
- const QColor c2 = m_styleOption.palette.background().color();
- const int p1 = 35;
- const int p2 = 100 - p1;
- m_outlineColor = QColor((c1.red() * p1 + c2.red() * p2) / 100,
- (c1.green() * p1 + c2.green() * p2) / 100,
- (c1.blue() * p1 + c2.blue() * p2) / 100);
-
- // The drawing code is based on the code of DolphinCategoryDrawer from Dolphin 1.7
- // Copyright (C) 2007 Rafael Fernández López <ereslibre@kde.org>
- {
- // Cache the left border as pixmap
- QPainter painter(m_leftBorderCache);
- painter.setPen(m_outlineColor);
-
- // 1. Draw top horizontal line
- painter.drawLine(3, 0, length, 0);
-
- // 2. Draw vertical line with gradient
- const QPoint start(0, 3);
- QLinearGradient gradient(start, QPoint(0, length));
- gradient.setColorAt(0, m_outlineColor);
- gradient.setColorAt(1, Qt::transparent);
- painter.fillRect(QRect(start, QSize(1, length - start.y())), gradient);
-
- // 3. Draw arc
- painter.setRenderHint(QPainter::Antialiasing);
- QRectF arc(QPointF(0, 0), QSizeF(4, 4));
- arc.translate(0.5, 0.5);
- painter.drawArc(arc, 1440, 1440);
- }
+ const int y = (m_scrollOrientation == Qt::Vertical) ? padding : horizontalMargin;
- {
- // Cache the right border as pixmap
- QPainter painter(m_rightBorderCache);
- painter.setPen(m_outlineColor);
-
- // 1. Draw top horizontal line
- painter.drawLine(0, 0, length - 3, 0);
-
- // 2. Draw vertical line with gradient
- const int right = length - 1;
- const QPoint start(right, 3);
- QLinearGradient gradient(start, QPoint(right, length));
- gradient.setColorAt(0, m_outlineColor);
- gradient.setColorAt(1, Qt::transparent);
- painter.fillRect(QRect(start, QSize(1, length - start.y())), gradient);
-
- // 3. Draw arc
- painter.setRenderHint(QPainter::Antialiasing);
- QRectF arc(QPointF(length - 5, 0), QSizeF(4, 4));
- arc.translate(0.5, 0.5);
- painter.drawArc(arc, 0, 1440);
- }
+ m_roleBounds = QRectF(horizontalMargin + padding,
+ y,
+ size().width() - 2 * padding - horizontalMargin,
+ roleHeight);
m_dirtyCache = false;
}
-void KItemListGroupHeader::deleteCache()
+QColor KItemListGroupHeader::mixedColor(const QColor& c1, const QColor& c2, int c1Percent)
{
- delete m_leftBorderCache;
- m_leftBorderCache = 0;
+ Q_ASSERT(c1Percent >= 0 && c1Percent <= 100);
- delete m_rightBorderCache;
- m_rightBorderCache = 0;
+ const int c2Percent = 100 - c1Percent;
+ return QColor((c1.red() * c1Percent + c2.red() * c2Percent) / 100,
+ (c1.green() * c1Percent + c2.green() * c2Percent) / 100,
+ (c1.blue() * c1Percent + c2.blue() * c2Percent) / 100);
}
#include "kitemlistgroupheader.moc"
projects / dolphin.git / blobdiff