-/***************************************************************************
- * Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com> *
- * *
- * Based on the Itemviews NG project from Trolltech Labs: *
- * http://qt.gitorious.org/qt-labs/itemviews-ng *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
- ***************************************************************************/
-
-#include "kitemlistgroupheader.h"
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ *
+ * Based on the Itemviews NG project from Trolltech Labs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "kstandarditemlistgroupheader.h"
#include "kitemlistview.h"
+#include <QGraphicsSceneResizeEvent>
#include <QPainter>
+#include <QStyleOptionGraphicsItem>
-#include <KDebug>
-
-KItemListGroupHeader::KItemListGroupHeader(QGraphicsWidget* parent) :
- QGraphicsWidget(parent, 0)
+KItemListGroupHeader::KItemListGroupHeader(QGraphicsWidget *parent)
+ : QGraphicsWidget(parent)
+ , m_dirtyCache(true)
+ , m_role()
+ , m_data()
+ , m_styleOption()
+ , m_scrollOrientation(Qt::Vertical)
+ , m_itemIndex(-1)
+ , m_separatorColor()
+ , m_roleColor()
+ , m_roleBounds()
{
}
{
}
-QSizeF KItemListGroupHeader::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
+void KItemListGroupHeader::setRole(const QByteArray &role)
+{
+ if (m_role != role) {
+ const QByteArray previous = m_role;
+ m_role = role;
+ update();
+ roleChanged(role, previous);
+ }
+}
+
+QByteArray KItemListGroupHeader::role() const
+{
+ return m_role;
+}
+
+void KItemListGroupHeader::setData(const QVariant &data)
+{
+ if (m_data != data) {
+ const QVariant previous = m_data;
+ m_data = data;
+ update();
+ dataChanged(data, previous);
+ }
+}
+
+QVariant KItemListGroupHeader::data() const
+{
+ return m_data;
+}
+
+void KItemListGroupHeader::setStyleOption(const KItemListStyleOption &option)
+{
+ if (m_styleOption == option) {
+ return;
+ }
+
+ const KItemListStyleOption previous = m_styleOption;
+ m_styleOption = option;
+ m_dirtyCache = true;
+ styleOptionChanged(option, previous);
+}
+
+const KItemListStyleOption &KItemListGroupHeader::styleOption() const
+{
+ return m_styleOption;
+}
+
+void KItemListGroupHeader::setScrollOrientation(Qt::Orientation orientation)
+{
+ if (m_scrollOrientation != orientation) {
+ const Qt::Orientation previous = m_scrollOrientation;
+ m_scrollOrientation = orientation;
+ if (orientation == Qt::Vertical) {
+ m_dirtyCache = true;
+ }
+ 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;
+}
+
+void KItemListGroupHeader::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
+{
+ Q_UNUSED(painter)
+ Q_UNUSED(option)
+ Q_UNUSED(widget)
+
+ if (m_dirtyCache) {
+ updateCache();
+ }
+
+ paintSeparator(painter, m_separatorColor);
+ paintRole(painter, m_roleBounds, m_roleColor);
+}
+
+void KItemListGroupHeader::roleChanged(const QByteArray ¤t, const QByteArray &previous)
+{
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
+}
+
+void KItemListGroupHeader::dataChanged(const QVariant ¤t, const QVariant &previous)
+{
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
+}
+
+void KItemListGroupHeader::styleOptionChanged(const KItemListStyleOption ¤t, const KItemListStyleOption &previous)
+{
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
+}
+
+void KItemListGroupHeader::scrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous)
+{
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
+}
+
+void KItemListGroupHeader::itemIndexChanged(int current, int previous)
+{
+ Q_UNUSED(current)
+ Q_UNUSED(previous)
+}
+
+void KItemListGroupHeader::resizeEvent(QGraphicsSceneResizeEvent *event)
+{
+ QGraphicsWidget::resizeEvent(event);
+ if (event->oldSize().height() != event->newSize().height()) {
+ m_dirtyCache = true;
+ }
+ updateSize();
+}
+
+void KItemListGroupHeader::updateCache()
{
- Q_UNUSED(which);
- Q_UNUSED(constraint);
- return QSizeF();
+ Q_ASSERT(m_dirtyCache);
+
+ // Calculate the role- and line-color. No alphablending is used for
+ // performance reasons.
+ const QColor c1 = textColor();
+ const QColor c2 = baseColor();
+ m_separatorColor = mixedColor(c1, c2, 10);
+ m_roleColor = mixedColor(c1, c2, 60);
+
+ updateSize();
+
+ m_dirtyCache = false;
}
-void KItemListGroupHeader::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
+void KItemListGroupHeader::updateSize()
{
- Q_UNUSED(option);
- Q_UNUSED(widget);
- painter->setPen(Qt::darkGreen);
- painter->setBrush(QColor(0, 255, 0, 50));
- painter->drawRect(rect());
+ const int padding = qMax(1, m_styleOption.padding);
+ const int horizontalMargin = qMax(2, m_styleOption.horizontalMargin);
- //painter->drawText(rect(), QString::number(m_index));
+ const QFontMetrics fontMetrics(m_styleOption.font);
+ const qreal roleHeight = fontMetrics.height();
+
+ const int y = (m_scrollOrientation == Qt::Vertical) ? padding : horizontalMargin;
+
+ m_roleBounds = QRectF(horizontalMargin + padding, y, size().width() - 2 * (padding + horizontalMargin), roleHeight);
+
+ update();
+}
+
+QColor KItemListGroupHeader::mixedColor(const QColor &c1, const QColor &c2, int c1Percent)
+{
+ Q_ASSERT(c1Percent >= 0 && c1Percent <= 100);
+
+ 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);
+}
+
+QPalette::ColorRole KItemListGroupHeader::normalTextColorRole() const
+{
+ return QPalette::Text;
+}
+
+QPalette::ColorRole KItemListGroupHeader::normalBaseColorRole() const
+{
+ return QPalette::Window;
+}
+
+QColor KItemListGroupHeader::textColor() const
+{
+ const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
+ return styleOption().palette.color(group, normalTextColorRole());
+}
+
+QColor KItemListGroupHeader::baseColor() const
+{
+ const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
+ return styleOption().palette.color(group, normalBaseColorRole());
}
-#include "kitemlistgroupheader.moc"
+#include "moc_kitemlistgroupheader.cpp"
projects / dolphin.git / blobdiff