Converted program listing to be QTableView based.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

1 files changed, 155 insertions, 0 deletions

diff --git a/qtmips_gui/programtableview.cpp b/qtmips_gui/programtableview.cpp
new file mode 100644
index 0000000..34a119a
--- /dev/null
+++ b/qtmips_gui/programtableview.cpp
@@ -0,0 +1,155 @@
+// 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 "programtableview.h"
+#include "programmodel.h"
+
+ProgramTableView::ProgramTableView(QWidget *parent, QSettings *settings) : Super(parent) {
+    connect(verticalScrollBar() , SIGNAL(valueChanged(int)),
+            this, SLOT(adjust_scroll_pos()));
+    this->settings = settings;
+    initial_address = settings->value("ProgramViewAddr0", 0).toULongLong();
+}
+
+void ProgramTableView::addr0_save_change(std::uint32_t val) {
+   settings->setValue("ProgramViewAddr0", val);
+}
+
+void ProgramTableView::adjustColumnCount() {
+    int cwidth;
+    int totwidth;
+    ProgramModel *m = dynamic_cast<ProgramModel*>(model());
+
+    if (m == nullptr)
+        return;
+
+    QFontMetrics fm(*m->getFont());
+    cwidth = fm.width("Bp");
+    totwidth = cwidth;
+    horizontalHeader()->setSectionResizeMode(0, QHeaderView::Fixed);
+    horizontalHeader()->resizeSection(0, cwidth);
+    cwidth = fm.width("0x00000000");
+    totwidth += cwidth;
+    horizontalHeader()->setSectionResizeMode(1, QHeaderView::Fixed);
+    horizontalHeader()->resizeSection(1, cwidth);
+    totwidth += cwidth;
+    cwidth = fm.width("00000000");
+    horizontalHeader()->setSectionResizeMode(2, QHeaderView::Fixed);
+    horizontalHeader()->resizeSection(2, cwidth);
+    horizontalHeader()->setSectionResizeMode(3, QHeaderView::Stretch);
+    totwidth += fm.width("BEQ $18, $17, 0x80020058");
+    totwidth += verticalHeader()->width();
+    setColumnHidden(2, totwidth > width());
+
+    if (initial_address != 0) {
+        go_to_address(initial_address);
+        initial_address = 0;
+    }
+}
+
+
+void ProgramTableView:: adjust_scroll_pos() {
+    std::uint32_t address;
+    ProgramModel *m = dynamic_cast<ProgramModel*>(model());
+    if (m == nullptr)
+        return;
+
+    QModelIndex prev_index = currentIndex();
+    std::uint32_t row_bytes = m->cellSizeBytes();
+    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 ProgramTableView::resizeEvent(QResizeEvent *event) {
+    ProgramModel *m = dynamic_cast<ProgramModel*>(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 ProgramTableView:: go_to_address(std::uint32_t address) {
+    ProgramModel *m = dynamic_cast<ProgramModel*>(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();
+}