[pulseview.git] / pv / views / decoder_output / QHexView.cpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2015 Victor Anjin <virinext@gmail.com>
 * Copyright (C) 2019 Soeren Apel <soeren@apelpie.net>
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <QApplication>
#include <QClipboard>
#include <QDebug>
#include <QFont>
#include <QKeyEvent>
#include <QScrollBar>
#include <QSize>
#include <QPainter>
#include <QPaintEvent>

#include "QHexView.hpp"

const unsigned int BYTES_PER_LINE   = 16;
const unsigned int HEXCHARS_IN_LINE = BYTES_PER_LINE * 3 - 1;
const unsigned int GAP_ADR_HEX      = 10;
const unsigned int GAP_HEX_ASCII    = 10;
const unsigned int GAP_ASCII_SLIDER = 5;


QHexView::QHexView(QWidget *parent):
	QAbstractScrollArea(parent),
	mode_(ChunkedDataMode),
	data_(nullptr),
	selectBegin_(0),
	selectEnd_(0),
	cursorPos_(0)
{
	setFont(QFont("Courier", 10));

	charWidth_ = fontMetrics().boundingRect('X').width();
	charHeight_ = fontMetrics().height();

	// Determine X coordinates of the three sub-areas
	posAddr_  = 0;
	posHex_   = 10 * charWidth_ + GAP_ADR_HEX;
	posAscii_ = posHex_ + HEXCHARS_IN_LINE * charWidth_ + GAP_HEX_ASCII;

	setFocusPolicy(Qt::StrongFocus);

	if (palette().color(QPalette::ButtonText).toHsv().value() > 127) {
		// Color is bright
		chunk_colors_.emplace_back(100, 149, 237); // QColorConstants::Svg::cornflowerblue
		chunk_colors_.emplace_back(60, 179, 113);  // QColorConstants::Svg::mediumseagreen
		chunk_colors_.emplace_back(210, 180, 140); // QColorConstants::Svg::tan
	} else {
		// Color is dark
		chunk_colors_.emplace_back(0, 0, 139);   // QColorConstants::Svg::darkblue
		chunk_colors_.emplace_back(34, 139, 34); // QColorConstants::Svg::forestgreen
		chunk_colors_.emplace_back(160, 82, 45); // QColorConstants::Svg::sienna
	}
}

void QHexView::setMode(Mode m)
{
	mode_ = m;

	// This is not expected to be set when data is showing,
	// so we don't update the viewport here
}

void QHexView::setData(const DecodeBinaryClass* data)
{
	data_ = data;

	size_t size = 0;
	size_t chunks = data_->chunks.size();
	for (size_t i = 0; i < chunks; i++)
		size += data_->chunks[i].data.size();
	data_size_ = size;

	viewport()->update();
}

void QHexView::clear()
{
	verticalScrollBar()->setValue(0);
	data_ = nullptr;
	data_size_ = 0;

	viewport()->update();
}

void QHexView::showFromOffset(size_t offset)
{
	if (data_ && (offset < data_size_)) {
		setCursorPos(offset * 2);

		int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);
		verticalScrollBar() -> setValue(cursorY);
	}

	viewport()->update();
}

QSizePolicy QHexView::sizePolicy() const
{
	return QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
}

pair<size_t, size_t> QHexView::get_selection() const
{
	size_t start = selectBegin_ / 2;
	size_t end = selectEnd_ / 2;

	if (start == end) {
		// Nothing is currently selected
		start = 0;
		end = data_size_;
	} else
		end++;

	return std::make_pair(start, end);
}

void QHexView::initialize_byte_iterator(size_t offset)
{
	current_chunk_id_ = 0;
	current_chunk_offset_ = 0;
	current_offset_ = offset;

	size_t chunks = data_->chunks.size();
	for (size_t i = 0; i < chunks; i++) {
		size_t size = data_->chunks[i].data.size();

		if (offset >= size) {
			current_chunk_id_++;
			offset -= size;
		} else {
			current_chunk_offset_ = offset;
			break;
		}
	}

	if (current_chunk_id_ < data_->chunks.size())
		current_chunk_ = data_->chunks[current_chunk_id_];
}

uint8_t QHexView::get_next_byte(bool* is_next_chunk)
{
	if (is_next_chunk != nullptr)
		*is_next_chunk = (current_chunk_offset_ == 0);

	uint8_t v = 0;
	if (current_chunk_offset_ < current_chunk_.data.size())
		v = current_chunk_.data[current_chunk_offset_];

	current_offset_++;
	current_chunk_offset_++;

	if (current_offset_ > data_size_) {
		qWarning() << "QHexView::get_next_byte() overran binary data boundary:" <<
			current_offset_ << "of" << data_size_ << "bytes";
		return 0xEE;
	}

	if ((current_chunk_offset_ == current_chunk_.data.size()) && (current_offset_ < data_size_)) {
		current_chunk_id_++;
		current_chunk_offset_ = 0;
		current_chunk_ = data_->chunks[current_chunk_id_];
	}

	return v;
}

QSize QHexView::getFullSize() const
{
	size_t width = posAscii_ + (BYTES_PER_LINE * charWidth_);

	if (verticalScrollBar()->isEnabled())
		width += GAP_ASCII_SLIDER + verticalScrollBar()->width();

	if (!data_ || (data_size_ == 0))
		return QSize(width, 0);

	size_t height = data_size_ / BYTES_PER_LINE;

	if (data_size_ % BYTES_PER_LINE)
		height++;

	height *= charHeight_;

	return QSize(width, height);
}

void QHexView::paintEvent(QPaintEvent *event)
{
	QPainter painter(viewport());

	// Calculate and update the widget and paint area sizes
	QSize widgetSize = getFullSize();
	setMinimumWidth(widgetSize.width());
	setMaximumWidth(widgetSize.width());
	QSize areaSize = viewport()->size();

	// Only show scrollbar if the content goes beyond the visible area
	if (widgetSize.height() > areaSize.height()) {
		verticalScrollBar()->setEnabled(true);
		verticalScrollBar()->setPageStep(areaSize.height() / charHeight_);
		verticalScrollBar()->setRange(0, ((widgetSize.height() - areaSize.height())) / charHeight_ + 1);
	} else
		verticalScrollBar()->setEnabled(false);

	// Fill widget background
	painter.fillRect(event->rect(), palette().color(QPalette::Base));

	if (!data_ || (data_size_ == 0)) {
		painter.setPen(palette().color(QPalette::Text));
		QString s = tr("No data available");
		int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;
		int y = areaSize.height() / 2;
		painter.drawText(x, y, s);
		return;
	}

	// Determine first/last line indices
	size_t firstLineIdx = verticalScrollBar()->value();

	size_t lastLineIdx = firstLineIdx + areaSize.height() / charHeight_;
	if (lastLineIdx > (data_size_ / BYTES_PER_LINE)) {
		lastLineIdx = data_size_ / BYTES_PER_LINE;
		if (data_size_ % BYTES_PER_LINE)
			lastLineIdx++;
	}

	// Fill address area background
	painter.fillRect(QRect(posAddr_, event->rect().top(),
		posHex_ - (GAP_ADR_HEX / 2), height()), palette().color(QPalette::Window));

	// Paint divider line between hex and ASCII areas
	int line_x = posAscii_ - (GAP_HEX_ASCII / 2);
	painter.setPen(palette().color(QPalette::Midlight));
	painter.drawLine(line_x, event->rect().top(), line_x, height());

	// Paint address area
	painter.setPen(palette().color(QPalette::ButtonText));

	int yStart = charHeight_;
	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {

		QString address = QString("%1").arg(lineIdx * 16, 10, 16, QChar('0')).toUpper();
		painter.drawText(posAddr_, y, address);
		y += charHeight_;
	}

	// Paint hex values
	QBrush regular = palette().buttonText();
	QBrush selected = palette().highlight();

	bool multiple_chunks = (data_->chunks.size() > 1);
	unsigned int chunk_color = 0;

	initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
	yStart = charHeight_;
	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {

		int x = posHex_;
		for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) {
			size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;

			// Fetch byte
			bool is_next_chunk;
			uint8_t byte_value = get_next_byte(&is_next_chunk);

			if (is_next_chunk) {
				chunk_color++;
				if (chunk_color == chunk_colors_.size())
					chunk_color = 0;
			}

			if ((pos >= selectBegin_) && (pos < selectEnd_)) {
				painter.setBackgroundMode(Qt::OpaqueMode);
				painter.setBackground(selected);
				painter.setPen(palette().color(QPalette::HighlightedText));
			} else {
				painter.setBackground(regular);
				painter.setBackgroundMode(Qt::TransparentMode);
				if (!multiple_chunks)
					painter.setPen(palette().color(QPalette::Text));
				else
					painter.setPen(chunk_colors_[chunk_color]);
			}

			// First nibble
			QString val = QString::number((byte_value & 0xF0) >> 4, 16).toUpper();
			painter.drawText(x, y, val);

			// Second nibble
			val = QString::number((byte_value & 0xF), 16).toUpper();
			painter.drawText(x + charWidth_, y, val);

			x += 3 * charWidth_;
		}

		y += charHeight_;
	}

	// Paint ASCII characters
	initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
	yStart = charHeight_;
	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {

		int x = posAscii_;
		for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) {
			// Fetch byte
			uint8_t ch = get_next_byte();

			if ((ch < 0x20) || (ch > 0x7E))
				ch = '.';

			size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;
			if ((pos >= selectBegin_) && (pos < selectEnd_)) {
				painter.setBackgroundMode(Qt::OpaqueMode);
				painter.setBackground(selected);
				painter.setPen(palette().color(QPalette::HighlightedText));
			} else {
				painter.setBackgroundMode(Qt::TransparentMode);
				painter.setBackground(regular);
				painter.setPen(palette().color(QPalette::Text));
			}

			painter.drawText(x, y, QString(ch));
			x += charWidth_;
		}

		y += charHeight_;
	}

	// Paint cursor
	if (hasFocus()) {
		int x = (cursorPos_ % (2 * BYTES_PER_LINE));
		int y = cursorPos_ / (2 * BYTES_PER_LINE);
		y -= firstLineIdx;
		int cursorX = (((x / 2) * 3) + (x % 2)) * charWidth_ + posHex_;
		int cursorY = y * charHeight_ + 4;
		painter.fillRect(cursorX, cursorY, 2, charHeight_, palette().color(QPalette::WindowText));
	}
}

void QHexView::keyPressEvent(QKeyEvent *event)
{
	bool setVisible = false;

	// Cursor movements
	if (event->matches(QKeySequence::MoveToNextChar)) {
		setCursorPos(cursorPos_ + 1);
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToPreviousChar)) {
		setCursorPos(cursorPos_ - 1);
		resetSelection(cursorPos_);
		setVisible = true;
	}

	if (event->matches(QKeySequence::MoveToEndOfLine)) {
		setCursorPos(cursorPos_ | ((BYTES_PER_LINE * 2) - 1));
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToStartOfLine)) {
		setCursorPos(cursorPos_ | (cursorPos_ % (BYTES_PER_LINE * 2)));
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToPreviousLine)) {
		setCursorPos(cursorPos_ - BYTES_PER_LINE * 2);
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToNextLine)) {
		setCursorPos(cursorPos_ + BYTES_PER_LINE * 2);
		resetSelection(cursorPos_);
		setVisible = true;
	}

	if (event->matches(QKeySequence::MoveToNextPage)) {
		setCursorPos(cursorPos_ + (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE);
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToPreviousPage)) {
		setCursorPos(cursorPos_ - (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE);
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToEndOfDocument)) {
		setCursorPos(data_size_ * 2);
		resetSelection(cursorPos_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::MoveToStartOfDocument)) {
		setCursorPos(0);
		resetSelection(cursorPos_);
		setVisible = true;
	}

	// Select commands
	if (event->matches(QKeySequence::SelectAll)) {
		resetSelection(0);
		setSelection(2 * data_size_);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectNextChar)) {
		int pos = cursorPos_ + 1;
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectPreviousChar)) {
		int pos = cursorPos_ - 1;
		setSelection(pos);
		setCursorPos(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectEndOfLine)) {
		int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE)) + (2 * BYTES_PER_LINE);
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectStartOfLine)) {
		int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE));
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectPreviousLine)) {
		int pos = cursorPos_ - (2 * BYTES_PER_LINE);
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectNextLine)) {
		int pos = cursorPos_ + (2 * BYTES_PER_LINE);
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}

	if (event->matches(QKeySequence::SelectNextPage)) {
		int pos = cursorPos_ + (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE);
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectPreviousPage)) {
		int pos = cursorPos_ - (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE);
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectEndOfDocument)) {
		int pos = data_size_ * 2;
		setCursorPos(pos);
		setSelection(pos);
		setVisible = true;
	}
	if (event->matches(QKeySequence::SelectStartOfDocument)) {
		setCursorPos(0);
		setSelection(0);
		setVisible = true;
	}

	if (event->matches(QKeySequence::Copy) && (data_)) {
		QString text;

		initialize_byte_iterator(selectBegin_ / 2);

		size_t selectedSize = (selectEnd_ - selectBegin_ + 1) / 2;
		for (size_t i = 0; i < selectedSize; i++) {
			uint8_t byte_value = get_next_byte();

			QString s = QString::number((byte_value & 0xF0) >> 4, 16).toUpper() +
				QString::number((byte_value & 0xF), 16).toUpper() + " ";
			text += s;

			if (i % BYTES_PER_LINE == (BYTES_PER_LINE - 1))
				text += "\n";
		}

		QClipboard *clipboard = QApplication::clipboard();
		clipboard->setText(text, QClipboard::Clipboard);
		if (clipboard->supportsSelection())
			clipboard->setText(text, QClipboard::Selection);
	}

	if (setVisible)
		ensureVisible();

	viewport()->update();
}

void QHexView::mouseMoveEvent(QMouseEvent *event)
{
	int actPos = cursorPosFromMousePos(event->pos());
	setCursorPos(actPos);
	setSelection(actPos);

	viewport()->update();
}

void QHexView::mousePressEvent(QMouseEvent *event)
{
	int cPos = cursorPosFromMousePos(event->pos());

	if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) && (event->button() == Qt::LeftButton))
		setSelection(cPos);
	else
		resetSelection(cPos);

	setCursorPos(cPos);

	viewport()->update();
}

size_t QHexView::cursorPosFromMousePos(const QPoint &position)
{
	size_t pos = -1;

	if (((size_t)position.x() >= posHex_) &&
		((size_t)position.x() < (posHex_ + HEXCHARS_IN_LINE * charWidth_))) {

		// Note: We add 1.5 character widths so that selection across
		// byte gaps is smoother
		size_t x = (position.x() + (1.5 * charWidth_ / 2) - posHex_) / charWidth_;

		// Note: We allow only full bytes to be selected, not nibbles,
		// so we round to the nearest byte gap
		x = (2 * x + 1) / 3;

		size_t firstLineIdx = verticalScrollBar()->value();
		size_t y = (position.y() / charHeight_) * 2 * BYTES_PER_LINE;
		pos = x + y + firstLineIdx * BYTES_PER_LINE * 2;
	}

	size_t max_pos = data_size_ * 2;

	return std::min(pos, max_pos);
}

void QHexView::resetSelection()
{
	selectBegin_ = selectInit_;
	selectEnd_ = selectInit_;
}

void QHexView::resetSelection(int pos)
{
	if (pos < 0)
		pos = 0;

	selectInit_ = pos;
	selectBegin_ = pos;
	selectEnd_ = pos;
}

void QHexView::setSelection(int pos)
{
	if (pos < 0)
		pos = 0;

	if ((size_t)pos >= selectInit_) {
		selectEnd_ = pos;
		selectBegin_ = selectInit_;
	} else {
		selectBegin_ = pos;
		selectEnd_ = selectInit_;
	}
}

void QHexView::setCursorPos(int position)
{
	if (position < 0)
		position = 0;

	int max_pos = data_size_ * 2;

	if (position > max_pos)
		position = max_pos;

	cursorPos_ = position;
}

void QHexView::ensureVisible()
{
	QSize areaSize = viewport()->size();

	int firstLineIdx = verticalScrollBar()->value();
	int lastLineIdx = firstLineIdx + areaSize.height() / charHeight_;

	int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);

	if (cursorY < firstLineIdx)
		verticalScrollBar()->setValue(cursorY);
	else
		if(cursorY >= lastLineIdx)
			verticalScrollBar()->setValue(cursorY - areaSize.height() / charHeight_ + 1);
}
Commit	Line	Data
c7b76823 SA	1	/*
	2	* This file is part of the PulseView project.
	3	*
	4	* Copyright (C) 2015 Victor Anjin <virinext@gmail.com>
	5	* Copyright (C) 2019 Soeren Apel <soeren@apelpie.net>
	6	*
	7	* The MIT License (MIT)
	8	*
	9	* Copyright (c) 2015
	10	*
	11	* Permission is hereby granted, free of charge, to any person obtaining a copy
	12	* of this software and associated documentation files (the "Software"), to deal
	13	* in the Software without restriction, including without limitation the rights
	14	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	15	* copies of the Software, and to permit persons to whom the Software is
	16	* furnished to do so, subject to the following conditions:
	17	*
	18	* The above copyright notice and this permission notice shall be included in all
	19	* copies or substantial portions of the Software.
	20	*
	21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	22	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	23	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	24	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	25	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	26	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	27	* SOFTWARE.
	28	*/
	29
	30	#include <QApplication>
	31	#include <QClipboard>
c8a6db0e	32	#include <QDebug>
c7b76823 SA	33	#include <QFont>
	34	#include <QKeyEvent>
	35	#include <QScrollBar>
	36	#include <QSize>
	37	#include <QPainter>
	38	#include <QPaintEvent>
	39
	40	#include "QHexView.hpp"
	41
560f8377 SA	42	const unsigned int BYTES_PER_LINE = 16;
	43	const unsigned int HEXCHARS_IN_LINE = BYTES_PER_LINE * 3 - 1;
	44	const unsigned int GAP_ADR_HEX = 10;
	45	const unsigned int GAP_HEX_ASCII = 10;
	46	const unsigned int GAP_ASCII_SLIDER = 5;
c7b76823	47
c7b76823 SA	48
c7b76823 SA	49	QHexView::QHexView(QWidget *parent):
560f8377	50	QAbstractScrollArea(parent),
628b45cc SA	51	mode_(ChunkedDataMode),
	52	data_(nullptr),
	53	selectBegin_(0),
	54	selectEnd_(0),
	55	cursorPos_(0)
c7b76823 SA	56	{
	57	setFont(QFont("Courier", 10));
	58
560f8377	59	charWidth_ = fontMetrics().boundingRect('X').width();
c7b76823 SA	60	charHeight_ = fontMetrics().height();
c7b76823 SA	61
560f8377 SA	62	// Determine X coordinates of the three sub-areas
	63	posAddr_ = 0;
	64	posHex_ = 10 * charWidth_ + GAP_ADR_HEX;
c7b76823 SA	65	posAscii_ = posHex_ + HEXCHARS_IN_LINE * charWidth_ + GAP_HEX_ASCII;
c7b76823 SA	66
c7b76823	67	setFocusPolicy(Qt::StrongFocus);
a61abf09 SA	68
	69	if (palette().color(QPalette::ButtonText).toHsv().value() > 127) {
	70	// Color is bright
	71	chunk_colors_.emplace_back(100, 149, 237); // QColorConstants::Svg::cornflowerblue
	72	chunk_colors_.emplace_back(60, 179, 113); // QColorConstants::Svg::mediumseagreen
	73	chunk_colors_.emplace_back(210, 180, 140); // QColorConstants::Svg::tan
	74	} else {
	75	// Color is dark
	76	chunk_colors_.emplace_back(0, 0, 139); // QColorConstants::Svg::darkblue
	77	chunk_colors_.emplace_back(34, 139, 34); // QColorConstants::Svg::forestgreen
	78	chunk_colors_.emplace_back(160, 82, 45); // QColorConstants::Svg::sienna
	79	}
c7b76823 SA	80	}
c7b76823 SA	81
628b45cc	82	void QHexView::setMode(Mode m)
c7b76823	83	{
628b45cc SA	84	mode_ = m;
	85
	86	// This is not expected to be set when data is showing,
	87	// so we don't update the viewport here
	88	}
c7b76823	89
628b45cc SA	90	void QHexView::setData(const DecodeBinaryClass* data)
628b45cc SA	91	{
01ba5ed7	92	data_ = data;
628b45cc	93
c8a6db0e SA	94	size_t size = 0;
	95	size_t chunks = data_->chunks.size();
	96	for (size_t i = 0; i < chunks; i++)
	97	size += data_->chunks[i].data.size();
	98	data_size_ = size;
628b45cc SA	99
	100	viewport()->update();
	101	}
	102
	103	void QHexView::clear()
	104	{
	105	verticalScrollBar()->setValue(0);
	106	data_ = nullptr;
	107	data_size_ = 0;
b2b18d3a SA	108
b2b18d3a SA	109	viewport()->update();
c7b76823 SA	110	}
	111
	112	void QHexView::showFromOffset(size_t offset)
	113	{
628b45cc	114	if (data_ && (offset < data_size_)) {
c7b76823 SA	115	setCursorPos(offset * 2);
	116
	117	int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);
	118	verticalScrollBar() -> setValue(cursorY);
	119	}
4b97fe09 SA	120
4b97fe09 SA	121	viewport()->update();
c7b76823 SA	122	}
c7b76823 SA	123
6961eab0 SA	124	QSizePolicy QHexView::sizePolicy() const
	125	{
	126	return QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
	127	}
	128
13b726cd SA	129	pair<size_t, size_t> QHexView::get_selection() const
	130	{
	131	size_t start = selectBegin_ / 2;
	132	size_t end = selectEnd_ / 2;
	133
	134	if (start == end) {
	135	// Nothing is currently selected
	136	start = 0;
	137	end = data_size_;
	138	} else
	139	end++;
	140
	141	return std::make_pair(start, end);
	142	}
	143
628b45cc	144	void QHexView::initialize_byte_iterator(size_t offset)
c7b76823	145	{
628b45cc SA	146	current_chunk_id_ = 0;
628b45cc SA	147	current_chunk_offset_ = 0;
cbf428c2	148	current_offset_ = offset;
628b45cc	149
c8a6db0e SA	150	size_t chunks = data_->chunks.size();
	151	for (size_t i = 0; i < chunks; i++) {
	152	size_t size = data_->chunks[i].data.size();
	153
	154	if (offset >= size) {
628b45cc	155	current_chunk_id_++;
c8a6db0e	156	offset -= size;
628b45cc SA	157	} else {
	158	current_chunk_offset_ = offset;
	159	break;
	160	}
c8a6db0e	161	}
4b97fe09	162
c8a6db0e SA	163	if (current_chunk_id_ < data_->chunks.size())
c8a6db0e SA	164	current_chunk_ = data_->chunks[current_chunk_id_];
628b45cc SA	165	}
	166
	167	uint8_t QHexView::get_next_byte(bool* is_next_chunk)
	168	{
	169	if (is_next_chunk != nullptr)
	170	*is_next_chunk = (current_chunk_offset_ == 0);
	171
c8a6db0e SA	172	uint8_t v = 0;
	173	if (current_chunk_offset_ < current_chunk_.data.size())
	174	v = current_chunk_.data[current_chunk_offset_];
628b45cc	175
cbf428c2	176	current_offset_++;
628b45cc	177	current_chunk_offset_++;
cbf428c2	178
c8a6db0e SA	179	if (current_offset_ > data_size_) {
	180	qWarning() << "QHexView::get_next_byte() overran binary data boundary:" <<
	181	current_offset_ << "of" << data_size_ << "bytes";
	182	return 0xEE;
	183	}
	184
	185	if ((current_chunk_offset_ == current_chunk_.data.size()) && (current_offset_ < data_size_)) {
628b45cc SA	186	current_chunk_id_++;
628b45cc SA	187	current_chunk_offset_ = 0;
516d2128	188	current_chunk_ = data_->chunks[current_chunk_id_];
628b45cc SA	189	}
	190
	191	return v;
c7b76823 SA	192	}
c7b76823 SA	193
560f8377	194	QSize QHexView::getFullSize() const
c7b76823	195	{
fae7037a	196	size_t width = posAscii_ + (BYTES_PER_LINE * charWidth_);
560f8377	197
fae7037a SA	198	if (verticalScrollBar()->isEnabled())
	199	width += GAP_ASCII_SLIDER + verticalScrollBar()->width();
	200
	201	if (!data_ \|\| (data_size_ == 0))
01ba5ed7	202	return QSize(width, 0);
560f8377	203
628b45cc	204	size_t height = data_size_ / BYTES_PER_LINE;
01ba5ed7	205
628b45cc	206	if (data_size_ % BYTES_PER_LINE)
c7b76823 SA	207	height++;
	208
	209	height *= charHeight_;
	210
	211	return QSize(width, height);
	212	}
	213
	214	void QHexView::paintEvent(QPaintEvent *event)
	215	{
c7b76823 SA	216	QPainter painter(viewport());
c7b76823 SA	217
560f8377	218	// Calculate and update the widget and paint area sizes
560f8377 SA	219	QSize widgetSize = getFullSize();
	220	setMinimumWidth(widgetSize.width());
	221	setMaximumWidth(widgetSize.width());
01ba5ed7	222	QSize areaSize = viewport()->size();
560f8377	223
fae7037a SA	224	// Only show scrollbar if the content goes beyond the visible area
	225	if (widgetSize.height() > areaSize.height()) {
	226	verticalScrollBar()->setEnabled(true);
	227	verticalScrollBar()->setPageStep(areaSize.height() / charHeight_);
	228	verticalScrollBar()->setRange(0, ((widgetSize.height() - areaSize.height())) / charHeight_ + 1);
	229	} else
	230	verticalScrollBar()->setEnabled(false);
c7b76823	231
01ba5ed7 SA	232	// Fill widget background
	233	painter.fillRect(event->rect(), palette().color(QPalette::Base));
	234
628b45cc	235	if (!data_ \|\| (data_size_ == 0)) {
01ba5ed7 SA	236	painter.setPen(palette().color(QPalette::Text));
	237	QString s = tr("No data available");
	238	int x = (areaSize.width() - fontMetrics().boundingRect(s).width()) / 2;
	239	int y = areaSize.height() / 2;
	240	painter.drawText(x, y, s);
	241	return;
	242	}
	243
	244	// Determine first/last line indices
c7b76823 SA	245	size_t firstLineIdx = verticalScrollBar()->value();
	246
	247	size_t lastLineIdx = firstLineIdx + areaSize.height() / charHeight_;
628b45cc SA	248	if (lastLineIdx > (data_size_ / BYTES_PER_LINE)) {
	249	lastLineIdx = data_size_ / BYTES_PER_LINE;
	250	if (data_size_ % BYTES_PER_LINE)
c7b76823 SA	251	lastLineIdx++;
	252	}
	253
01ba5ed7	254	// Fill address area background
c7b76823	255	painter.fillRect(QRect(posAddr_, event->rect().top(),
560f8377	256	posHex_ - (GAP_ADR_HEX / 2), height()), palette().color(QPalette::Window));
c7b76823	257
560f8377 SA	258	// Paint divider line between hex and ASCII areas
	259	int line_x = posAscii_ - (GAP_HEX_ASCII / 2);
	260	painter.setPen(palette().color(QPalette::Midlight));
	261	painter.drawLine(line_x, event->rect().top(), line_x, height());
c7b76823	262
560f8377 SA	263	// Paint address area
560f8377 SA	264	painter.setPen(palette().color(QPalette::ButtonText));
c7b76823	265
560f8377 SA	266	int yStart = charHeight_;
560f8377 SA	267	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
c7b76823	268
560f8377 SA	269	QString address = QString("%1").arg(lineIdx * 16, 10, 16, QChar('0')).toUpper();
	270	painter.drawText(posAddr_, y, address);
	271	y += charHeight_;
	272	}
c7b76823	273
560f8377	274	// Paint hex values
a61abf09 SA	275	QBrush regular = palette().buttonText();
	276	QBrush selected = palette().highlight();
	277
	278	bool multiple_chunks = (data_->chunks.size() > 1);
	279	unsigned int chunk_color = 0;
c7b76823	280
628b45cc	281	initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
560f8377 SA	282	yStart = charHeight_;
	283	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
	284
560f8377	285	int x = posHex_;
cbf428c2	286	for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) {
c7b76823	287	size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;
c7b76823	288
a61abf09 SA	289	// Fetch byte
	290	bool is_next_chunk;
	291	uint8_t byte_value = get_next_byte(&is_next_chunk);
	292
	293	if (is_next_chunk) {
	294	chunk_color++;
	295	if (chunk_color == chunk_colors_.size())
	296	chunk_color = 0;
	297	}
	298
560f8377	299	if ((pos >= selectBegin_) && (pos < selectEnd_)) {
a61abf09	300	painter.setBackgroundMode(Qt::OpaqueMode);
c7b76823	301	painter.setBackground(selected);
560f8377	302	painter.setPen(palette().color(QPalette::HighlightedText));
c7b76823	303	} else {
560f8377	304	painter.setBackground(regular);
a61abf09 SA	305	painter.setBackgroundMode(Qt::TransparentMode);
	306	if (!multiple_chunks)
	307	painter.setPen(palette().color(QPalette::Text));
	308	else
	309	painter.setPen(chunk_colors_[chunk_color]);
c7b76823 SA	310	}
c7b76823 SA	311
560f8377	312	// First nibble
628b45cc	313	QString val = QString::number((byte_value & 0xF0) >> 4, 16).toUpper();
560f8377	314	painter.drawText(x, y, val);
c7b76823	315
560f8377	316	// Second nibble
628b45cc	317	val = QString::number((byte_value & 0xF), 16).toUpper();
560f8377	318	painter.drawText(x + charWidth_, y, val);
c7b76823	319
560f8377	320	x += 3 * charWidth_;
c7b76823 SA	321	}
c7b76823 SA	322
560f8377 SA	323	y += charHeight_;
	324	}
	325
	326	// Paint ASCII characters
628b45cc	327	initialize_byte_iterator(firstLineIdx * BYTES_PER_LINE);
560f8377 SA	328	yStart = charHeight_;
	329	for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
	330
	331	int x = posAscii_;
cbf428c2	332	for (size_t i = 0; (i < BYTES_PER_LINE) && (current_offset_ < data_size_); i++) {
628b45cc SA	333	// Fetch byte
628b45cc SA	334	uint8_t ch = get_next_byte();
c7b76823	335
560f8377	336	if ((ch < 0x20) \|\| (ch > 0x7E))
c7b76823 SA	337	ch = '.';
c7b76823 SA	338
560f8377 SA	339	size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;
560f8377 SA	340	if ((pos >= selectBegin_) && (pos < selectEnd_)) {
a61abf09	341	painter.setBackgroundMode(Qt::OpaqueMode);
560f8377 SA	342	painter.setBackground(selected);
	343	painter.setPen(palette().color(QPalette::HighlightedText));
	344	} else {
a61abf09	345	painter.setBackgroundMode(Qt::TransparentMode);
560f8377 SA	346	painter.setBackground(regular);
	347	painter.setPen(palette().color(QPalette::Text));
	348	}
	349
	350	painter.drawText(x, y, QString(ch));
	351	x += charWidth_;
c7b76823 SA	352	}
c7b76823 SA	353
560f8377	354	y += charHeight_;
c7b76823 SA	355	}
c7b76823 SA	356
560f8377	357	// Paint cursor
c7b76823 SA	358	if (hasFocus()) {
	359	int x = (cursorPos_ % (2 * BYTES_PER_LINE));
	360	int y = cursorPos_ / (2 * BYTES_PER_LINE);
	361	y -= firstLineIdx;
	362	int cursorX = (((x / 2) * 3) + (x % 2)) * charWidth_ + posHex_;
	363	int cursorY = y * charHeight_ + 4;
560f8377	364	painter.fillRect(cursorX, cursorY, 2, charHeight_, palette().color(QPalette::WindowText));
c7b76823 SA	365	}
	366	}
	367
	368	void QHexView::keyPressEvent(QKeyEvent *event)
	369	{
	370	bool setVisible = false;
	371
560f8377	372	// Cursor movements
c7b76823 SA	373	if (event->matches(QKeySequence::MoveToNextChar)) {
	374	setCursorPos(cursorPos_ + 1);
	375	resetSelection(cursorPos_);
	376	setVisible = true;
	377	}
	378	if (event->matches(QKeySequence::MoveToPreviousChar)) {
	379	setCursorPos(cursorPos_ - 1);
	380	resetSelection(cursorPos_);
	381	setVisible = true;
	382	}
	383
	384	if (event->matches(QKeySequence::MoveToEndOfLine)) {
	385	setCursorPos(cursorPos_ \| ((BYTES_PER_LINE * 2) - 1));
	386	resetSelection(cursorPos_);
	387	setVisible = true;
	388	}
	389	if (event->matches(QKeySequence::MoveToStartOfLine)) {
	390	setCursorPos(cursorPos_ \| (cursorPos_ % (BYTES_PER_LINE * 2)));
	391	resetSelection(cursorPos_);
	392	setVisible = true;
	393	}
	394	if (event->matches(QKeySequence::MoveToPreviousLine)) {
	395	setCursorPos(cursorPos_ - BYTES_PER_LINE * 2);
	396	resetSelection(cursorPos_);
	397	setVisible = true;
	398	}
	399	if (event->matches(QKeySequence::MoveToNextLine)) {
	400	setCursorPos(cursorPos_ + BYTES_PER_LINE * 2);
	401	resetSelection(cursorPos_);
	402	setVisible = true;
	403	}
	404
	405	if (event->matches(QKeySequence::MoveToNextPage)) {
	406	setCursorPos(cursorPos_ + (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE);
	407	resetSelection(cursorPos_);
	408	setVisible = true;
	409	}
	410	if (event->matches(QKeySequence::MoveToPreviousPage)) {
	411	setCursorPos(cursorPos_ - (viewport()->height() / charHeight_ - 1) * 2 * BYTES_PER_LINE);
	412	resetSelection(cursorPos_);
	413	setVisible = true;
	414	}
	415	if (event->matches(QKeySequence::MoveToEndOfDocument)) {
628b45cc	416	setCursorPos(data_size_ * 2);
c7b76823 SA	417	resetSelection(cursorPos_);
	418	setVisible = true;
	419	}
	420	if (event->matches(QKeySequence::MoveToStartOfDocument)) {
	421	setCursorPos(0);
	422	resetSelection(cursorPos_);
	423	setVisible = true;
	424	}
	425
560f8377	426	// Select commands
c7b76823 SA	427	if (event->matches(QKeySequence::SelectAll)) {
c7b76823 SA	428	resetSelection(0);
628b45cc	429	setSelection(2 * data_size_);
c7b76823 SA	430	setVisible = true;
	431	}
	432	if (event->matches(QKeySequence::SelectNextChar)) {
	433	int pos = cursorPos_ + 1;
	434	setCursorPos(pos);
	435	setSelection(pos);
	436	setVisible = true;
	437	}
	438	if (event->matches(QKeySequence::SelectPreviousChar)) {
	439	int pos = cursorPos_ - 1;
	440	setSelection(pos);
	441	setCursorPos(pos);
	442	setVisible = true;
	443	}
	444	if (event->matches(QKeySequence::SelectEndOfLine)) {
	445	int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE)) + (2 * BYTES_PER_LINE);
	446	setCursorPos(pos);
	447	setSelection(pos);
	448	setVisible = true;
	449	}
	450	if (event->matches(QKeySequence::SelectStartOfLine)) {
	451	int pos = cursorPos_ - (cursorPos_ % (2 * BYTES_PER_LINE));
	452	setCursorPos(pos);
	453	setSelection(pos);
	454	setVisible = true;
	455	}
	456	if (event->matches(QKeySequence::SelectPreviousLine)) {
	457	int pos = cursorPos_ - (2 * BYTES_PER_LINE);
	458	setCursorPos(pos);
	459	setSelection(pos);
	460	setVisible = true;
	461	}
	462	if (event->matches(QKeySequence::SelectNextLine)) {
	463	int pos = cursorPos_ + (2 * BYTES_PER_LINE);
	464	setCursorPos(pos);
	465	setSelection(pos);
	466	setVisible = true;
	467	}
	468
	469	if (event->matches(QKeySequence::SelectNextPage)) {
	470	int pos = cursorPos_ + (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE);
	471	setCursorPos(pos);
	472	setSelection(pos);
	473	setVisible = true;
	474	}
	475	if (event->matches(QKeySequence::SelectPreviousPage)) {
	476	int pos = cursorPos_ - (((viewport()->height() / charHeight_) - 1) * 2 * BYTES_PER_LINE);
	477	setCursorPos(pos);
	478	setSelection(pos);
	479	setVisible = true;
	480	}
	481	if (event->matches(QKeySequence::SelectEndOfDocument)) {
628b45cc	482	int pos = data_size_ * 2;
c7b76823 SA	483	setCursorPos(pos);
	484	setSelection(pos);
	485	setVisible = true;
	486	}
	487	if (event->matches(QKeySequence::SelectStartOfDocument)) {
628b45cc SA	488	setCursorPos(0);
628b45cc SA	489	setSelection(0);
c7b76823 SA	490	setVisible = true;
	491	}
	492
01ba5ed7	493	if (event->matches(QKeySequence::Copy) && (data_)) {
c7b76823	494	QString text;
c7b76823	495
628b45cc	496	initialize_byte_iterator(selectBegin_ / 2);
c7b76823	497
628b45cc SA	498	size_t selectedSize = (selectEnd_ - selectBegin_ + 1) / 2;
	499	for (size_t i = 0; i < selectedSize; i++) {
	500	uint8_t byte_value = get_next_byte();
	501
	502	QString s = QString::number((byte_value & 0xF0) >> 4, 16).toUpper() +
	503	QString::number((byte_value & 0xF), 16).toUpper() + " ";
	504	text += s;
c7b76823	505
628b45cc SA	506	if (i % BYTES_PER_LINE == (BYTES_PER_LINE - 1))
628b45cc SA	507	text += "\n";
c7b76823 SA	508	}
	509
	510	QClipboard *clipboard = QApplication::clipboard();
628b45cc	511	clipboard->setText(text, QClipboard::Clipboard);
c7b76823	512	if (clipboard->supportsSelection())
628b45cc	513	clipboard->setText(text, QClipboard::Selection);
c7b76823 SA	514	}
	515
	516	if (setVisible)
	517	ensureVisible();
	518
	519	viewport()->update();
	520	}
	521
	522	void QHexView::mouseMoveEvent(QMouseEvent *event)
	523	{
560f8377	524	int actPos = cursorPosFromMousePos(event->pos());
c7b76823 SA	525	setCursorPos(actPos);
	526	setSelection(actPos);
	527
	528	viewport()->update();
	529	}
	530
	531	void QHexView::mousePressEvent(QMouseEvent *event)
	532	{
560f8377	533	int cPos = cursorPosFromMousePos(event->pos());
c7b76823 SA	534
	535	if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) && (event->button() == Qt::LeftButton))
	536	setSelection(cPos);
	537	else
	538	resetSelection(cPos);
	539
	540	setCursorPos(cPos);
	541
	542	viewport()->update();
	543	}
	544
560f8377	545	size_t QHexView::cursorPosFromMousePos(const QPoint &position)
c7b76823	546	{
628b45cc	547	size_t pos = -1;
c7b76823 SA	548
	549	if (((size_t)position.x() >= posHex_) &&
	550	((size_t)position.x() < (posHex_ + HEXCHARS_IN_LINE * charWidth_))) {
	551
560f8377 SA	552	// Note: We add 1.5 character widths so that selection across
560f8377 SA	553	// byte gaps is smoother
628b45cc	554	size_t x = (position.x() + (1.5 * charWidth_ / 2) - posHex_) / charWidth_;
c7b76823	555
560f8377 SA	556	// Note: We allow only full bytes to be selected, not nibbles,
	557	// so we round to the nearest byte gap
	558	x = (2 * x + 1) / 3;
c7b76823	559
628b45cc SA	560	size_t firstLineIdx = verticalScrollBar()->value();
628b45cc SA	561	size_t y = (position.y() / charHeight_) * 2 * BYTES_PER_LINE;
c7b76823 SA	562	pos = x + y + firstLineIdx * BYTES_PER_LINE * 2;
	563	}
	564
628b45cc SA	565	size_t max_pos = data_size_ * 2;
	566
	567	return std::min(pos, max_pos);
c7b76823 SA	568	}
	569
	570	void QHexView::resetSelection()
	571	{
	572	selectBegin_ = selectInit_;
	573	selectEnd_ = selectInit_;
	574	}
	575
	576	void QHexView::resetSelection(int pos)
	577	{
	578	if (pos < 0)
	579	pos = 0;
	580
	581	selectInit_ = pos;
	582	selectBegin_ = pos;
	583	selectEnd_ = pos;
	584	}
	585
	586	void QHexView::setSelection(int pos)
	587	{
	588	if (pos < 0)
	589	pos = 0;
	590
	591	if ((size_t)pos >= selectInit_) {
	592	selectEnd_ = pos;
	593	selectBegin_ = selectInit_;
	594	} else {
	595	selectBegin_ = pos;
	596	selectEnd_ = selectInit_;
	597	}
	598	}
	599
	600	void QHexView::setCursorPos(int position)
	601	{
	602	if (position < 0)
	603	position = 0;
	604
628b45cc	605	int max_pos = data_size_ * 2;
c7b76823	606
628b45cc SA	607	if (position > max_pos)
628b45cc SA	608	position = max_pos;
c7b76823 SA	609
	610	cursorPos_ = position;
	611	}
	612
	613	void QHexView::ensureVisible()
	614	{
	615	QSize areaSize = viewport()->size();
	616
628b45cc	617	int firstLineIdx = verticalScrollBar()->value();
c7b76823 SA	618	int lastLineIdx = firstLineIdx + areaSize.height() / charHeight_;
	619
	620	int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);
	621
	622	if (cursorY < firstLineIdx)
628b45cc SA	623	verticalScrollBar()->setValue(cursorY);
	624	else
	625	if(cursorY >= lastLineIdx)
	626	verticalScrollBar()->setValue(cursorY - areaSize.height() / charHeight_ + 1);
c7b76823	627	}