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// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
* QtMips - MIPS 32-bit Architecture Subset Simulator
*
* Implemented to support following courses:
*
* B35APO - Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b35apo
*
* B4M35PAP - Advanced Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
*
* Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
* Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
*
* Faculty of Electrical Engineering (http://www.fel.cvut.cz)
* Czech Technical University (http://www.cvut.cz/)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
******************************************************************************/
#include <QHeaderView>
#include <QFontMetrics>
#include <QScrollBar>
#include <QKeyEvent>
#include <QClipboard>
#include <QApplication>
#include "memorytableview.h"
#include "memorymodel.h"
MemoryTableView::MemoryTableView(QWidget *parent, QSettings *settings) : Super(parent) {
connect(verticalScrollBar() , SIGNAL(valueChanged(int)),
this, SLOT(adjust_scroll_pos()));
this->settings = settings;
initial_address = settings->value("DataViewAddr0", 0).toULongLong();
}
void MemoryTableView::addr0_save_change(std::uint32_t val) {
settings->setValue("DataViewAddr0", val);
}
void MemoryTableView::adjustColumnCount() {
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
if (horizontalHeader()->count() >= 2 && m != nullptr) {
QFontMetrics fm(*m->getFont());
int width0 = fm.width("0x00000000");
horizontalHeader()->setSectionResizeMode(0, QHeaderView::Fixed);
horizontalHeader()->resizeSection(0, width0);
QString t = "";
t.fill(QChar('0'), m->cellSizeBytes() * 2);
/* t + = " C"; */
int width1 = fm.width(t);
if (width1 < fm.width("+99"))
width1 = fm.width("+99");
horizontalHeader()->setSectionResizeMode(1, QHeaderView::Fixed);
horizontalHeader()->resizeSection(1, width1);
int w = verticalHeader()->width() + 4;
unsigned int cells;
width0 = columnWidth(0);
width1 = columnWidth(1);
w = width() - w - width0;
if (w < width1 + 2) {
cells = 1;
} else {
cells = w / (width1 + 2);
}
if (cells != m->cellsPerRow()) {
m->setCellsPerRow(cells);
}
for (unsigned int i = 1; i < m->cellsPerRow() + 1; i++) {
horizontalHeader()->setSectionResizeMode(i, QHeaderView::Fixed);
horizontalHeader()->resizeSection(i, width1);
}
if (initial_address != 0) {
go_to_address(initial_address);
initial_address = 0;
}
}
}
void MemoryTableView::set_cell_size(int index) {
std::uint32_t address;
int row;
bool keep_row0 = false;
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
if (m != nullptr) {
keep_row0 = m->get_row_address(address, rowAt(0));
m->set_cell_size(index);
}
adjustColumnCount();
if (keep_row0) {
m->adjustRowAndOffset(row, m->rowCount() / 2, address);
scrollTo(m->index(row, 0),
QAbstractItemView::PositionAtTop);
}
}
void MemoryTableView:: adjust_scroll_pos() {
std::uint32_t address;
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
if (m == nullptr)
return;
QModelIndex prev_index = currentIndex();
std::uint32_t row_bytes = m->cellSizeBytes() * m->cellsPerRow();
std::uint32_t index0_offset = m->getIndex0Offset();
do {
int row = rowAt(0);
int prev_row = row;
if (row < m->rowCount() / 8) {
if ((row == 0) && (index0_offset < row_bytes) && (index0_offset != 0)) {
m->adjustRowAndOffset(row, 0, 0);
} else if (index0_offset > row_bytes) {
m->get_row_address(address, row);
m->adjustRowAndOffset(row, m->rowCount() / 7, address);
} else {
break;
}
} else if (row > m->rowCount() - m->rowCount() / 8) {
m->get_row_address(address, row);
m->adjustRowAndOffset(row, m->rowCount() - m->rowCount() / 7, address);
} else {
break;
}
scrollTo(m->index(row, 0), QAbstractItemView::PositionAtTop);
setCurrentIndex(m->index(prev_index.row() + row - prev_row,
prev_index.column()));
emit m->update_all();
} while(0);
m->get_row_address(address, rowAt(0));
addr0_save_change(address);
emit address_changed(address);
}
void MemoryTableView::resizeEvent(QResizeEvent *event) {
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
std::uint32_t address;
bool keep_row0 = false;
if (m != nullptr) {
if (initial_address == 0) {
keep_row0 = m->get_row_address(address, rowAt(0));
} else {
address = initial_address;
}
}
Super::resizeEvent(event);
adjustColumnCount();
if (keep_row0) {
initial_address = 0;
go_to_address(address);
}
}
void MemoryTableView::go_to_address(std::uint32_t address) {
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
int row;
if (m == nullptr)
return;
m->adjustRowAndOffset(row, m->rowCount() / 2, address);
scrollTo(m->index(row, 0),
QAbstractItemView::PositionAtTop);
setCurrentIndex(m->index(row, 1));
addr0_save_change(address);
emit m->update_all();
}
void MemoryTableView::focus_address(std::uint32_t address) {
int row;
MemoryModel *m = dynamic_cast<MemoryModel*>(model());
if (m == nullptr)
return;
if (!m->get_row_for_address(row, address))
go_to_address(address);
if (!m->get_row_for_address(row, address))
return;
setCurrentIndex(m->index(row, 1));
}
void MemoryTableView::keyPressEvent(QKeyEvent *event) {
if(event->matches(QKeySequence::Copy)) {
QString text;
QItemSelectionRange range = selectionModel()->selection().first();
for (auto i = range.top(); i <= range.bottom(); ++i)
{
QStringList rowContents;
for (auto j = range.left(); j <= range.right(); ++j)
rowContents << model()->index(i,j).data().toString();
text += rowContents.join("\t");
text += "\n";
}
QApplication::clipboard()->setText(text);
} else
Super::keyPressEvent(event);
}
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