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-rw-r--r--libgroupview/src/kcategorydrawer.cpp231
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+/**
+ * This file is part of the KDE project
+ * Copyright (C) 2007, 2009 Rafael Fernández López <ereslibre@kde.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "kcategorydrawer.h"
+
+#include <QPainter>
+#include <QStyleOption>
+#include <QApplication>
+
+#include <kcategorizedview.h>
+#include <kcategorizedsortfilterproxymodel.h>
+
+#define HORIZONTAL_HINT 3
+
+class KCategoryDrawer::Private
+{
+public:
+ Private(KCategorizedView *view)
+ : view(view)
+ , leftMargin(0)
+ , rightMargin(0)
+ {
+ }
+
+ ~Private()
+ {
+ }
+ int leftMargin;
+ int rightMargin;
+ KCategorizedView *view;
+};
+
+KCategoryDrawer::KCategoryDrawer(KCategorizedView *view)
+ : QObject(view)
+ , d(new Private(view))
+{
+ setLeftMargin(2);
+ setRightMargin(2);
+}
+
+KCategoryDrawer::~KCategoryDrawer()
+{
+ delete d;
+}
+
+
+void KCategoryDrawer::drawCategory(const QModelIndex &index,
+ int /*sortRole*/,
+ const QStyleOption &option,
+ QPainter *painter) const
+{
+ painter->setRenderHint(QPainter::Antialiasing);
+
+ const QString category = index.model()->data(index, KCategorizedSortFilterProxyModel::CategoryDisplayRole).toString();
+ const QRect optRect = option.rect;
+ QFont font(QApplication::font());
+ font.setBold(true);
+ const QFontMetrics fontMetrics = QFontMetrics(font);
+
+ QColor outlineColor = option.palette.text().color();
+ outlineColor.setAlphaF(0.35);
+
+ //BEGIN: top left corner
+ {
+ painter->save();
+ painter->setPen(outlineColor);
+ const QPointF topLeft(optRect.topLeft());
+ QRectF arc(topLeft, QSizeF(4, 4));
+ arc.translate(0.5, 0.5);
+ painter->drawArc(arc, 1440, 1440);
+ painter->restore();
+ }
+ //END: top left corner
+
+ //BEGIN: left vertical line
+ {
+ QPoint start(optRect.topLeft());
+ start.ry() += 3;
+ QPoint verticalGradBottom(optRect.topLeft());
+ verticalGradBottom.ry() += fontMetrics.height() + 5;
+ QLinearGradient gradient(start, verticalGradBottom);
+ gradient.setColorAt(0, outlineColor);
+ gradient.setColorAt(1, Qt::transparent);
+ painter->fillRect(QRect(start, QSize(1, fontMetrics.height() + 5)), gradient);
+ }
+ //END: left vertical line
+
+ //BEGIN: horizontal line
+ {
+ QPoint start(optRect.topLeft());
+ start.rx() += 3;
+ QPoint horizontalGradTop(optRect.topLeft());
+ horizontalGradTop.rx() += optRect.width() - 6;
+ painter->fillRect(QRect(start, QSize(optRect.width() - 6, 1)), outlineColor);
+ }
+ //END: horizontal line
+
+ //BEGIN: top right corner
+ {
+ painter->save();
+ painter->setPen(outlineColor);
+ QPointF topRight(optRect.topRight());
+ topRight.rx() -= 4;
+ QRectF arc(topRight, QSizeF(4, 4));
+ arc.translate(0.5, 0.5);
+ painter->drawArc(arc, 0, 1440);
+ painter->restore();
+ }
+ //END: top right corner
+
+ //BEGIN: right vertical line
+ {
+ QPoint start(optRect.topRight());
+ start.ry() += 3;
+ QPoint verticalGradBottom(optRect.topRight());
+ verticalGradBottom.ry() += fontMetrics.height() + 5;
+ QLinearGradient gradient(start, verticalGradBottom);
+ gradient.setColorAt(0, outlineColor);
+ gradient.setColorAt(1, Qt::transparent);
+ painter->fillRect(QRect(start, QSize(1, fontMetrics.height() + 5)), gradient);
+ }
+ //END: right vertical line
+
+ //BEGIN: text
+ {
+ QRect textRect(option.rect);
+ textRect.setTop(textRect.top() + 7);
+ textRect.setLeft(textRect.left() + 7);
+ textRect.setHeight(fontMetrics.height());
+ textRect.setRight(textRect.right() - 7);
+
+ painter->save();
+ painter->setFont(font);
+ QColor penColor(option.palette.text().color());
+ penColor.setAlphaF(0.6);
+ painter->setPen(penColor);
+ painter->drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, category);
+ painter->restore();
+ }
+ //END: text
+}
+
+int KCategoryDrawer::categoryHeight(const QModelIndex &index, const QStyleOption &option) const
+{
+ Q_UNUSED(index);
+ Q_UNUSED(option)
+
+ QFont font(QApplication::font());
+ font.setBold(true);
+ QFontMetrics fontMetrics(font);
+
+ const int height = fontMetrics.height() + 1 /* 1 pixel-width gradient */
+ + 11 /* top and bottom separation */;
+ return height;
+}
+
+int KCategoryDrawer::leftMargin() const
+{
+ return d->leftMargin;
+}
+
+void KCategoryDrawer::setLeftMargin(int leftMargin)
+{
+ d->leftMargin = leftMargin;
+}
+
+int KCategoryDrawer::rightMargin() const
+{
+ return d->rightMargin;
+}
+
+void KCategoryDrawer::setRightMargin(int rightMargin)
+{
+ d->rightMargin = rightMargin;
+}
+
+KCategoryDrawer &KCategoryDrawer::operator=(const KCategoryDrawer &cd)
+{
+ d->leftMargin = cd.d->leftMargin;
+ d->rightMargin = cd.d->rightMargin;
+ d->view = cd.d->view;
+ return *this;
+}
+
+KCategorizedView *KCategoryDrawer::view() const
+{
+ return d->view;
+}
+
+void KCategoryDrawer::mouseButtonPressed(const QModelIndex&, const QRect&, QMouseEvent *event)
+{
+ event->ignore();
+}
+
+void KCategoryDrawer::mouseButtonReleased(const QModelIndex&, const QRect&, QMouseEvent *event)
+{
+ event->ignore();
+}
+
+void KCategoryDrawer::mouseMoved(const QModelIndex&, const QRect&, QMouseEvent *event)
+{
+ event->ignore();
+}
+
+void KCategoryDrawer::mouseButtonDoubleClicked(const QModelIndex&, const QRect&, QMouseEvent *event)
+{
+ event->ignore();
+}
+
+void KCategoryDrawer::mouseLeft(const QModelIndex&, const QRect&)
+{
+}
+
+#include "kcategorydrawer.moc"