1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
// 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 "memoryview.h"
///////////////////////////
// Minimal reserved range in pixels of scroll area (otherwise 10% of height are used)
#define MIN_OFF 10
// Focus point (this is multiplied with height of widget to know position where we want to focus)
#define FOCUS 0.25
// How angle maps to pixels when and scroll is used
#define ANGLE_SCROLL 1
///////////////////////////
MemoryView::MemoryView(QWidget *parent, std::uint32_t addr0) : QWidget(parent) {
memory = nullptr;
addr_0 = addr0;
layout = new QVBoxLayout(this);
memf= new Frame(this);
layout->addWidget(memf);
ctl_widg = new QWidget(this);
layout->addWidget(ctl_widg);
go_edit = new QLineEdit(ctl_widg);
go_edit->setText("0x00000000");
go_edit->setInputMask("\\0\\xHHHHHHHH");
layout->addWidget(go_edit);
connect(go_edit, SIGNAL(editingFinished()), this, SLOT(go_edit_finish()));
}
void MemoryView::setup(machine::QtMipsMachine *machine) {
memory = (machine == nullptr) ? nullptr : machine->memory();
if (machine != nullptr)
connect(machine, SIGNAL(post_tick()), this, SLOT(check_for_updates()));
reload_content();
}
void MemoryView::set_focus(std::uint32_t address) {
if (address < addr_0 || (address - addr_0)/4 > (unsigned)memf->widg->count()) {
// This is outside of loaded area so just move it and reload everything
addr_0 = address - 4*memf->focussed();
addr0_save_change(addr_0);
reload_content();
} else {
memf->focus((address - addr_0) / 4);
}
edit_load_focus();
}
std::uint32_t MemoryView::focus() const {
return addr_0 + 4*memf->focussed();
}
std::uint32_t MemoryView::addr0() const {
return addr_0;
}
void MemoryView::edit_load_focus() {
go_edit->setText(QString("0x%1").arg(focus(), 8, 16, QChar('0')));
}
void MemoryView::check_for_updates() {
if (memory != nullptr) {
if (change_counter != memory->get_change_counter())
reload_content();
}
}
void MemoryView::reload_content() {
int count = memf->widg->count();
memf->widg->clearRows();
if (memory != nullptr)
change_counter = memory->get_change_counter();
update_content(count, 0);
}
void MemoryView::update_content(int count, int shift) {
if (abs(shift) >= memf->widg->count()) {
// This shifts more than we have so just reload whole content
memf->widg->clearRows();
addr_0 += 4*shift;
for (int i = 0; i <= count; i++)
memf->widg->addRow(row_widget(addr_0 + 4*i, memf->widg));
return;
}
int diff = count - memf->widg->count();
int d_b = shift;
int d_e = diff - shift;
if (d_b > 0)
for (int i = 0; i < d_b; i++) {
addr_0 -= 4;
memf->widg->insertRow(row_widget(addr_0, memf->widg), 0);
}
else
for (int i = 0; i > d_b; i--) {
addr_0 += 4;
memf->widg->removeRow(0);
}
if (d_e > 0)
for (int i = 0; i < d_e; i++)
memf->widg->addRow(row_widget(addr_0 + 4*memf->widg->count(), memf->widg));
else
for (int i = 0; i > d_e; i--)
memf->widg->removeRow(memf->widg->count() - 1);
addr0_save_change(addr_0);
}
void MemoryView::addr0_save_change(std::uint32_t val) { /* ignore */ }
void MemoryView::go_edit_finish() {
QString hex = go_edit->text();
hex.remove(0, 2);
bool ok;
std::uint32_t nw = hex.toUInt(&ok, 16);
if (ok) {
set_focus(nw);
} else
edit_load_focus();
}
MemoryView::Frame::Frame(MemoryView *parent) : QAbstractScrollArea(parent) {
mv = parent;
content_y = -3*MIN_OFF/2; // When this is initialized the width is 0 so this uses just min to inialize it
widg = new StaticTable(this);
setViewport(widg);
setFrameShape(QFrame::NoFrame);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setContentsMargins(0, 0, 0, 0);
}
void MemoryView::Frame::focus(unsigned i) {
content_y = (FOCUS*height()) - widg->row_size()*i/widg->columns() - widg->row_size()/2;
viewport()->move(0, content_y);
viewport()->repaint(0, content_y, width(), height());
check_update();
}
// Calculate which row is in focus at the moment
unsigned MemoryView::Frame::focussed() {
int h = (FOCUS*height() - content_y) / widg->row_size() * widg->columns();
return qMax(h, 0);
}
// This verifies that we are not scrolled too far away down or up and that we have enought height
// We make 10% of height as buffer zone with fixed minimum in pixels
void MemoryView::Frame::check_update() {
int hpart = qMax(height()/10, MIN_OFF);
int req_height = height() + 2*hpart;
if ((content_y < -hpart) && (content_y > -2*hpart) && (widg->height() >= req_height))
return;
int row_h = widg->row_size();
// Calculate how many we need and how much we need to move and update content accordingly
int count = (req_height / row_h) + 1;
int shift = (content_y + hpart + hpart/2)/row_h;
mv->update_content(count * widg->columns(), shift * widg->columns());
// Move and resize widget
content_y -= shift * row_h;
widg->setGeometry(0, content_y, width(), count * row_h);
mv->edit_load_focus();
}
void MemoryView::Frame::resizeEvent(QResizeEvent *e) {
QAbstractScrollArea::resizeEvent(e);
widg->setGeometry(0, content_y, e->size().width(), widg->heightForWidth(e->size().width()));
check_update();
}
void MemoryView::Frame::wheelEvent(QWheelEvent *e) {
QPoint pix = e->pixelDelta();
QPoint ang = e->angleDelta();
if (!pix.isNull())
content_y += pix.ry();
else if (!ang.isNull())
content_y += ang.ry() * ANGLE_SCROLL;
// TODO smooth scroll
viewport()->move(0, content_y);
viewport()->repaint(0, content_y, width(), height());
check_update();
}
bool MemoryView::Frame::viewportEvent(QEvent *e) {
bool p = QAbstractScrollArea::viewportEvent(e);
// Pass paint event to viewport widget
if (e->type() == QEvent::Paint)
p = false;
return p;
}
|
