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/*
* Copyright (c) 2013 Maximilian Güntner <maximilian.guentner@gmail.com>
*
* This file is subject to the terms and conditions of version 2 of
* the GNU General Public License. See the file gpl-2.0.txt in the main
* directory of this archive for more details.
*
* Original License:
*
* This file is part of the Nepomuk widgets collection
* Copyright (c) 2013 Denis Steckelmacher <steckdenis@yahoo.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2.1 as published by the Free Software Foundation,
* or 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 "groupedlineedit.h"
#include <QFontMetrics>
#include <QStyleOptionFrameV3>
#include <QFontMetrics>
#include <QApplication>
#include <QScrollBar>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextLayout>
#include <QTextLine>
#include <QPainter>
#include <QPainterPath>
#include <QBrush>
#include <QColor>
#include <QPalette>
#include <QDebug>
struct GroupedLineEdit::Private {
struct Block {
int start;
int end;
QString text;
};
QVector<Block> blocks;
QVector<QColor> colors;
};
GroupedLineEdit::GroupedLineEdit(QWidget *parent) : QPlainTextEdit(parent),
d(new Private)
{
setWordWrapMode(QTextOption::NoWrap);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
document()->setMaximumBlockCount(1);
}
GroupedLineEdit::~GroupedLineEdit()
{
delete d;
}
QString GroupedLineEdit::text() const
{
// Remove the block crosses from the text
return toPlainText();
}
int GroupedLineEdit::cursorPosition() const
{
return textCursor().positionInBlock();
}
void GroupedLineEdit::addBlock(int start, int end)
{
Private::Block block;
block.start = start;
block.end = end;
block.text = text().mid(start, end - start + 1).trimmed();
d->blocks.append(block);
viewport()->update();
}
void GroupedLineEdit::addColor(QColor color)
{
d->colors.append(color);
}
void GroupedLineEdit::removeAllColors()
{
d->colors.clear();
}
QStringList GroupedLineEdit::getBlockStringList()
{
QStringList retList;
Private::Block block;
foreach(block, d->blocks)
retList.append(block.text);
return retList;
}
void GroupedLineEdit::setCursorPosition(int position)
{
QTextCursor c = textCursor();
c.setPosition(position, QTextCursor::MoveAnchor);
setTextCursor(c);
}
void GroupedLineEdit::setText(const QString &text)
{
setPlainText(text);
}
void GroupedLineEdit::clear()
{
QPlainTextEdit::clear();
removeAllBlocks();
}
void GroupedLineEdit::selectAll()
{
QTextCursor c = textCursor();
c.select(QTextCursor::LineUnderCursor);
setTextCursor(c);
}
void GroupedLineEdit::removeAllBlocks()
{
d->blocks.clear();
viewport()->update();
}
QSize GroupedLineEdit::sizeHint() const
{
QSize rs(
40,
document()->findBlock(0).layout()->lineAt(0).height() +
document()->documentMargin() * 2 +
frameWidth() * 2);
return rs;
}
QSize GroupedLineEdit::minimumSizeHint() const
{
return sizeHint();
}
void GroupedLineEdit::keyPressEvent(QKeyEvent *e)
{
switch (e->key()) {
case Qt::Key_Return:
case Qt::Key_Enter:
emit editingFinished();
return;
}
QPlainTextEdit::keyPressEvent(e);
}
void GroupedLineEdit::paintEvent(QPaintEvent *e)
{
#if !defined __APPLE__
// for reasons we don't understand, yet, touching the painter
// here (even drawing the fill rect) causes the QPlainTextEdit
// paintEvent to not draw the text on MacOS.
// So as a workaround until this is better understood we need
// to disable the eye candy
QTextLine line = document()->findBlock(0).layout()->lineAt(0);
QPainter painter(viewport());
painter.setRenderHint(QPainter::Antialiasing, true);
painter.fillRect(0, 0, viewport()->width(), viewport()->height(), palette().base());
QVectorIterator<QColor> i(d->colors);
i.toFront();
foreach(const Private::Block & block, d->blocks) {
qreal start_x = line.cursorToX(block.start, QTextLine::Trailing);
qreal end_x = line.cursorToX(block.end + 1, QTextLine::Leading);
QPainterPath path;
QRectF rectangle(
start_x - 1.0 - double(horizontalScrollBar()->value()),
1.0,
end_x - start_x + 2.0,
double(viewport()->height() - 2));
if (!i.hasNext())
i.toFront();
path.addRoundedRect(rectangle, 5.0, 5.0);
painter.setPen(i.peekNext());
if (palette().color(QPalette::Text).lightnessF() <= 0.3)
painter.setBrush(i.next().lighter());
else if (palette().color(QPalette::Text).lightnessF() <= 0.6)
painter.setBrush(i.next());
else
painter.setBrush(i.next().darker());
painter.drawPath(path);
}
#endif
QPlainTextEdit::paintEvent(e);
}
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