mirror of
https://invent.kde.org/network/falkon.git
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327 lines
12 KiB
C++
327 lines
12 KiB
C++
/* ============================================================
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* QupZilla - WebKit based browser
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* Copyright (C) 2010-2013 David Rosca <nowrep@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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#include "locationcompleterdelegate.h"
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#include "locationcompleterview.h"
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#include "locationcompletermodel.h"
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#include "iconprovider.h"
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#include <QPainter>
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#include <QApplication>
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#include <QMouseEvent>
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LocationCompleterDelegate::LocationCompleterDelegate(LocationCompleterView* parent)
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: QStyledItemDelegate(parent)
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, m_rowHeight(0)
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, m_padding(0)
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, m_drawSwitchToTab(true)
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, m_view(parent)
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{
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}
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void LocationCompleterDelegate::paint(QPainter* painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QStyleOptionViewItemV4 opt = option;
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initStyleOption(&opt, index);
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const QWidget* w = opt.widget;
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const QStyle* style = w ? w->style() : QApplication::style();
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const int height = opt.rect.height();
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const int center = height / 2 + opt.rect.top();
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// Prepare title font
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QFont titleFont = opt.font;
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titleFont.setPointSize(titleFont.pointSize() + 1);
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const QFontMetrics titleMetrics(titleFont);
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int leftPosition = m_padding * 2;
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int rightPosition = opt.rect.right() - m_padding;
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opt.state &= ~QStyle::State_MouseOver;
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if (m_view->hoveredIndex() == index) {
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opt.state |= QStyle::State_Selected;
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}
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else {
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opt.state &= ~QStyle::State_Selected;
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}
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#ifdef Q_OS_WIN
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const QPalette::ColorRole colorRole = QPalette::Text;
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const QPalette::ColorRole colorLinkRole = QPalette::Link;
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#else
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const QPalette::ColorRole colorRole = opt.state & QStyle::State_Selected ? QPalette::HighlightedText : QPalette::Text;
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const QPalette::ColorRole colorLinkRole = opt.state & QStyle::State_Selected ? QPalette::HighlightedText : QPalette::Link;
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#endif
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// Draw background
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style->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, w);
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// Draw icon
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const int iconSize = 16;
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const int iconYPos = center - (iconSize / 2);
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QRect iconRect(leftPosition, iconYPos, iconSize, iconSize);
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QPixmap pixmap = index.data(Qt::DecorationRole).value<QIcon>().pixmap(iconSize);
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painter->drawPixmap(iconRect, pixmap);
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leftPosition = iconRect.right() + m_padding * 2;
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// Draw star to bookmark items
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int starPixmapWidth = 0;
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if (index.data(LocationCompleterModel::BookmarkRole).toBool()) {
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const QPixmap starPixmap = qIconProvider->bookmarkIcon();
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QSize starSize = starPixmap.size();
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//new
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starPixmapWidth = starSize.width();
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QPoint pos(rightPosition - starPixmapWidth, opt.rect.top() + m_padding);
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QRect starRect(pos, starSize);
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painter->drawPixmap(starRect, starPixmap);
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}
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const QString searchText = index.data(LocationCompleterModel::SearchStringRole).toString();
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// Draw title
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const int leftTitleEdge = leftPosition + 2;
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// RTL Support: remove conflicting of right-aligned text and starpixmap!
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const int rightTitleEdge = rightPosition - m_padding - starPixmapWidth;
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QRect titleRect(leftTitleEdge, opt.rect.top() + m_padding, rightTitleEdge - leftTitleEdge, titleMetrics.height());
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QString title(titleMetrics.elidedText(index.data(LocationCompleterModel::TitleRole).toString(), Qt::ElideRight, titleRect.width()));
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painter->setFont(titleFont);
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drawHighlightedTextLine(titleRect, title, searchText, painter, style, opt, colorRole);
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// Draw link
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const int infoYPos = titleRect.bottom() + opt.fontMetrics.leading() + 2;
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QRect linkRect(titleRect.x(), infoYPos, titleRect.width(), opt.fontMetrics.height());
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const QByteArray linkArray = index.data(Qt::DisplayRole).toByteArray();
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// Let's assume that more than 500 characters won't fit in line on any display...
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// Fixes performance when trying to get elidedText for a really long
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// (length() > 1000000) urls - data: urls can get that long
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QString link;
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if (!linkArray.startsWith("data") && !linkArray.startsWith("javascript")) {
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link = QString::fromUtf8(QByteArray::fromPercentEncoding(linkArray)).left(500);
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}
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else {
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link = QString::fromLatin1(linkArray.left(500));
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}
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link = opt.fontMetrics.elidedText(link, Qt::ElideRight, linkRect.width());
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painter->setFont(opt.font);
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TabPosition pos = index.data(LocationCompleterModel::TabPositionRole).value<TabPosition>();
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if (m_drawSwitchToTab && pos.windowIndex != -1) {
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const QIcon tabIcon = QIcon(":icons/menu/tab.png");
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QRect iconRect(linkRect);
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iconRect.setWidth(m_padding + 16 + m_padding);
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tabIcon.paint(painter, iconRect);
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QRect textRect(linkRect);
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textRect.setX(textRect.x() + m_padding + 16 + m_padding);
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drawTextLine(textRect, LocationCompleterView::tr("Switch to tab"), painter, style, opt, colorLinkRole);
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}
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else {
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drawHighlightedTextLine(linkRect, link, searchText, painter, style, opt, colorLinkRole);
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}
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// Draw line at the very bottom of item if the item is not highlighted
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if (!(opt.state & QStyle::State_Selected)) {
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QRect lineRect(opt.rect.left(), opt.rect.bottom(), opt.rect.width(), 1);
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painter->fillRect(lineRect, opt.palette.color(QPalette::AlternateBase));
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}
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}
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static bool sizeBiggerThan(const QString &s1, const QString &s2)
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{
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return s1.size() > s2.size();
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}
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void LocationCompleterDelegate::drawHighlightedTextLine(const QRect &rect, const QString &text, const QString &searchText,
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QPainter* painter, const QStyle* style, const QStyleOptionViewItemV4 &option,
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const QPalette::ColorRole &role) const
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{
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QList<int> delimiters;
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QStringList searchStrings = searchText.split(QLatin1Char(' '), QString::SkipEmptyParts);
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// Look for longer parts first
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qSort(searchStrings.begin(), searchStrings.end(), sizeBiggerThan);
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foreach (const QString &string, searchStrings) {
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int delimiter = text.indexOf(string, 0, Qt::CaseInsensitive);
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while (delimiter != -1) {
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int start = delimiter;
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int end = delimiter + string.length();
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bool alreadyContains = false;
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for (int i = 0; i < delimiters.count(); ++i) {
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int dStart = delimiters.at(i);
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int dEnd = delimiters.at(++i);
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if (dStart <= start && dEnd >= end) {
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alreadyContains = true;
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break;
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}
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}
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if (!alreadyContains) {
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delimiters.append(start);
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delimiters.append(end);
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}
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delimiter = text.indexOf(string, end, Qt::CaseInsensitive);
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}
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}
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// We need to sort delimiters to properly paint all parts that user typed
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qSort(delimiters);
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// If we don't find any match, just paint it without any highlight
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if (delimiters.isEmpty() || delimiters.count() % 2) {
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drawTextLine(rect, text, painter, style, option, role);
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return;
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}
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QFont normalFont = painter->font();
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QFont boldFont = normalFont;
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boldFont.setBold(true);
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QFontMetrics normalMetrics(normalFont);
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QFontMetrics boldMetrics(boldFont);
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int lastEndPos = 0;
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int lastRectPos = rect.left();
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while (!delimiters.isEmpty()) {
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int start = delimiters.takeFirst();
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int end = delimiters.takeFirst();
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const QString normalPart = text.mid(lastEndPos, start - lastEndPos);
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const QString boldPart = text.mid(start, end - start);
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lastEndPos = end;
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if (!normalPart.isEmpty()) {
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int width = normalMetrics.width(normalPart);
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QRect nRect = adjustRect(rect, QRect(lastRectPos, rect.top(), width, rect.height()));
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if (nRect.width() > 0) {
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if (text.isRightToLeft()) {
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nRect = style->visualRect(Qt::RightToLeft, rect, nRect);
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}
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painter->setFont(normalFont);
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drawTextLine(nRect, normalPart, painter, style, option, role);
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lastRectPos += nRect.width();
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}
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}
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if (!boldPart.isEmpty()) {
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int width = boldMetrics.width(boldPart);
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QRect bRect = adjustRect(rect, QRect(lastRectPos, rect.top(), width, rect.height()));
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if (bRect.width() > 0) {
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if (text.isRightToLeft()) {
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bRect = style->visualRect(Qt::RightToLeft, rect, bRect);
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}
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painter->setFont(boldFont);
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drawTextLine(bRect, boldPart, painter, style, option, role);
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// Paint manually line under text instead of using QFont::underline
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QRect underlineRect(bRect.left(), bRect.top() + boldMetrics.ascent() + 1,
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bRect.width(), boldFont.pointSize() > 8 ? 2 : 1);
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painter->fillRect(underlineRect, option.palette.color(role));
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lastRectPos += bRect.width();
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}
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}
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if (delimiters.isEmpty() && lastEndPos != text.size()) {
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const QString lastText = text.mid(lastEndPos);
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int width = normalMetrics.width(lastText);
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QRect nRect = adjustRect(rect, QRect(lastRectPos, rect.top(), width, rect.height()));
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if (text.isRightToLeft()) {
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nRect = style->visualRect(Qt::RightToLeft, rect, nRect);
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}
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painter->setFont(normalFont);
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drawTextLine(nRect, lastText, painter, style, option, role);
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}
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}
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}
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void LocationCompleterDelegate::drawTextLine(const QRect &rect, QString text, QPainter* painter,
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const QStyle* style, const QStyleOptionViewItemV4 &option,
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const QPalette::ColorRole &role) const
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{
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if (rect.width() > 0) {
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const Qt::LayoutDirection direction = option.widget ? option.widget->layoutDirection() : QApplication::layoutDirection();
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Qt::LayoutDirection textDirection = text.isRightToLeft() ? Qt::RightToLeft : Qt::LeftToRight;
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Qt::Alignment alignment = textDirection == direction ? Qt::AlignLeft : Qt::AlignRight;
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// Insert unicode control characters: prepend RLE or LRE and append (RLM or LRM)+PDF
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text.isRightToLeft() ? text.prepend(QChar(0x202B)).append(0x200F) : text.prepend(QChar(0x202A)).append(0x200E);
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text.append(QChar(0x202C));
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style->drawItemText(painter, rect, Qt::TextSingleLine | alignment, option.palette, true, text, role);
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}
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}
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QRect LocationCompleterDelegate::adjustRect(const QRect &original, const QRect &created) const
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{
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if (created.left() + created.width() >= original.right()) {
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QRect nRect = created;
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nRect.setWidth(original.right() - created.left());
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return nRect;
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}
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return created;
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}
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QSize LocationCompleterDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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Q_UNUSED(index)
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if (!m_rowHeight) {
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QStyleOptionViewItemV4 opt(option);
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initStyleOption(&opt, index);
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const QWidget* w = opt.widget;
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const QStyle* style = w ? w->style() : QApplication::style();
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const int padding = style->pixelMetric(QStyle::PM_FocusFrameHMargin, 0) + 1;
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QFont titleFont = opt.font;
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titleFont.setPointSize(titleFont.pointSize() + 1);
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m_padding = padding > 3 ? padding : 3;
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const QFontMetrics titleMetrics(titleFont);
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// 2 px bigger space between title and link because of underlining
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m_rowHeight = 2 * m_padding + opt.fontMetrics.leading() + opt.fontMetrics.height() + titleMetrics.height() + 2;
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}
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return QSize(200, m_rowHeight);
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}
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void LocationCompleterDelegate::drawSwitchToTab(bool enable)
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{
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m_drawSwitchToTab = enable;
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}
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