+++ /dev/null
-/*
- * 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 <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),
- data_(nullptr)
-{
- 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);
-}
-
-void QHexView::setData(QByteArray *data)
-{
- verticalScrollBar()->setValue(0);
-
- data_ = data;
- cursorPos_ = 0;
- resetSelection(0);
-
- viewport()->update();
-}
-
-void QHexView::showFromOffset(size_t offset)
-{
- if (data_ && (offset < (size_t)data_->count())) {
- setCursorPos(offset * 2);
-
- int cursorY = cursorPos_ / (2 * BYTES_PER_LINE);
- verticalScrollBar() -> setValue(cursorY);
- }
-
- viewport()->update();
-}
-
-void QHexView::clear()
-{
- verticalScrollBar()->setValue(0);
- data_ = nullptr;
-
- viewport()->update();
-}
-
-QSize QHexView::getFullSize() const
-{
- size_t width = posAscii_ + (BYTES_PER_LINE * charWidth_) +
- GAP_ASCII_SLIDER + verticalScrollBar()->width();
-
- if (!data_)
- return QSize(width, 0);
-
- size_t height = data_->count() / BYTES_PER_LINE;
-
- if (data_->count() % 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();
-
- verticalScrollBar()->setPageStep(areaSize.height() / charHeight_);
- verticalScrollBar()->setRange(0, (widgetSize.height() - areaSize.height()) / charHeight_ + 1);
-
- // 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_->count() / BYTES_PER_LINE)) {
- lastLineIdx = data_->count() / BYTES_PER_LINE;
- if (data_->count() % 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 = painter.brush();
- QBrush selected = QBrush(palette().color(QPalette::Highlight));
- QByteArray data = data_->mid(firstLineIdx * BYTES_PER_LINE,
- (lastLineIdx - firstLineIdx) * BYTES_PER_LINE);
-
- yStart = charHeight_;
- for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
-
- painter.setBackgroundMode(Qt::OpaqueMode);
-
- int x = posHex_;
- for (size_t i = 0; i < BYTES_PER_LINE && ((lineIdx - firstLineIdx) * BYTES_PER_LINE + i) < (size_t)data.size(); i++) {
- size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;
-
- if ((pos >= selectBegin_) && (pos < selectEnd_)) {
- painter.setBackground(selected);
- painter.setPen(palette().color(QPalette::HighlightedText));
- } else {
- painter.setBackground(regular);
- painter.setPen(palette().color(QPalette::Text));
- }
-
- // First nibble
- QString val = QString::number((data.at((lineIdx - firstLineIdx) * BYTES_PER_LINE + i) & 0xF0) >> 4, 16).toUpper();
- painter.drawText(x, y, val);
-
- // Second nibble
- val = QString::number((data.at((lineIdx - firstLineIdx) * BYTES_PER_LINE + i) & 0xF), 16).toUpper();
- painter.drawText(x + charWidth_, y, val);
-
- x += 3 * charWidth_;
- }
-
- y += charHeight_;
- }
-
- // Paint ASCII characters
- yStart = charHeight_;
- for (size_t lineIdx = firstLineIdx, y = yStart; lineIdx < lastLineIdx; lineIdx++) {
-
- int x = posAscii_;
- for (size_t i = 0; ((lineIdx - firstLineIdx) * BYTES_PER_LINE + i) < (size_t)data.size() && (i < BYTES_PER_LINE); i++) {
- char ch = data[(unsigned int)((lineIdx - firstLineIdx) * BYTES_PER_LINE + i)];
-
- if ((ch < 0x20) || (ch > 0x7E))
- ch = '.';
-
- size_t pos = (lineIdx * BYTES_PER_LINE + i) * 2;
- if ((pos >= selectBegin_) && (pos < selectEnd_)) {
- painter.setBackground(selected);
- painter.setPen(palette().color(QPalette::HighlightedText));
- } else {
- 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)) {
- if (data_)
- setCursorPos(data_->count() * 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);
- if (data_)
- setSelection(2 * data_->count() + 1);
- 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 = 0;
- if (data_)
- pos = data_->count() * 2;
- setCursorPos(pos);
- setSelection(pos);
- setVisible = true;
- }
- if (event->matches(QKeySequence::SelectStartOfDocument)) {
- int pos = 0;
- setCursorPos(pos);
- setSelection(pos);
- setVisible = true;
- }
-
- if (event->matches(QKeySequence::Copy) && (data_)) {
- QString text;
- int idx = 0;
- int copyOffset = 0;
-
- QByteArray data = data_->mid(selectBegin_ / 2, (selectEnd_ - selectBegin_) / 2 + 1);
- if (selectBegin_ % 2) {
- text += QString::number((data.at((idx+1) / 2) & 0xF), 16);
- text += " ";
- idx++;
- copyOffset = 1;
- }
-
- int selectedSize = selectEnd_ - selectBegin_;
- while (idx < selectedSize) {
- QString val = QString::number((data.at((copyOffset + idx) / 2) & 0xF0) >> 4, 16);
- if ((idx + 1) < selectedSize) {
- val += QString::number((data.at((copyOffset + idx) / 2) & 0xF), 16);
- val += " ";
- }
- text += val;
-
- if ((idx/2) % BYTES_PER_LINE == (BYTES_PER_LINE - 1))
- text += "\n";
-
- idx += 2;
- }
-
- QClipboard *clipboard = QApplication::clipboard();
- clipboard->setText(text);
- if (clipboard->supportsSelection())
- clipboard->setText(text);
- }
-
- 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)
-{
- int 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
- int 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;
-
- int firstLineIdx = verticalScrollBar()->value();
- int y = (position.y() / charHeight_) * 2 * BYTES_PER_LINE;
- pos = x + y + firstLineIdx * BYTES_PER_LINE * 2;
- }
-
- return 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 maxPos = 0;
- if (data_)
- maxPos = data_->count() * 2;
-
- if (position > maxPos)
- position = maxPos;
-
- 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);
-}
projects / pulseview.git / blobdiff