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#include "memoryview.h"
///////////////////////////
// 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 4
///////////////////////////
#include <iostream>
using namespace std;
MemoryView::MemoryView(QWidget *parent) : QWidget(parent) {
memory = nullptr;
addr_0 = 0;
layout = new QVBoxLayout(this);
memf= new Frame(this);
layout->addWidget(memf);
ctl_widg = new QWidget(this);
layout->addWidget(ctl_widg);
ctl_layout = new QHBoxLayout(ctl_widg);
go_edit = new QLineEdit(ctl_widg);
go_edit->setText("0x00000000");
go_edit->setInputMask("\\0\\xHHHHHHHH");
ctl_layout->addWidget(go_edit);
connect(go_edit, SIGNAL(editingFinished()), this, SLOT(go_edit_finish()));
up = new QToolButton(ctl_widg);
up->setArrowType(Qt::UpArrow);
connect(up, SIGNAL(clicked(bool)), this, SLOT(prev_section()));
ctl_layout->addWidget(up);
down = new QToolButton(ctl_widg);
down->setArrowType(Qt::DownArrow);
connect(down, SIGNAL(clicked(bool)), this, SLOT(next_section()));
ctl_layout->addWidget(down);
}
void MemoryView::setup(machine::QtMipsMachine *machine) {
memory = (machine == nullptr) ? nullptr : machine->memory();
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
// TODO this doesn't work with more than one column
addr_0 = address - 4*memf->focussed_row();
reload_content();
} else {
memf->focus_row((address - addr_0) / 4);
}
}
std::uint32_t MemoryView::focus() {
return addr_0 + 4*memf->focussed_row();
}
void MemoryView::edit_load_focus() {
go_edit->setText(QString("0x%1").arg(focus(), 8, 16, QChar('0')));
}
void MemoryView::reload_content() {
int count = memf->widg->count();
memf->widg->clearRows();
update_content(count, 0);
}
// This changes content to fit row_count number of rows including given number of columns
void MemoryView::resize_content(int row_count) {
if (row_count > memf->widg->count()) { // insert
} else { // remove
}
}
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 d_b = shift;
int d_e = count - memf->widg->count() - 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);
}
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();
}
void MemoryView::next_section() {
if (memory == nullptr)
return;
set_focus(memory->next_allocated(focus()));
}
void MemoryView::prev_section() {
if (memory == nullptr)
return;
set_focus(memory->prev_allocated(focus()));
}
MemoryView::Frame::Frame(MemoryView *parent) : QAbstractScrollArea(parent) {
mv = parent;
focus = 0;
widg = new StaticTable(this);
setViewport(widg);
setFrameShape(QFrame::NoFrame);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setContentsMargins(0, 0, 0, 0);
}
void MemoryView::Frame::resizeEvent(QResizeEvent *e) {
QAbstractScrollArea::resizeEvent(e);
mv->resize_content(widg->height() / widg->row_size());
// TODO
return;
int row_h = widg->row_size();
// Don't update if we are in limits
if ((widg->y() < -hpart) && (widg->y() > -2*hpart) && (widg->height() >= req_height))
return;
// Calculate how many we need and how much we need to move and update content accordingly
int count = (height() / row_h) + 1;
int shift = (widg->y() + hpart + hpart/2)/row_h;
mv->update_content(count * widg->columns(), shift * widg->columns());
// Move and resize widget
// Note count * row_h here is optimalization. We know row_h and count here so let's just use it
widg->setGeometry(0, widg->y() - shift*row_h, width(), count * row_h);
// Move focus to be consistent with shift we done
focus += shift;
}
void MemoryView::Frame::wheelEvent(QWheelEvent *e) {
QPoint pix = e->pixelDelta();
QPoint ang = e->angleDelta();
int shift;
if (!pix.isNull())
shift = pix.ry();
else if (!ang.isNull())
shift = ang.ry() * ANGLE_SCROLL;
// Move focus by approriate amount but at least by one row
mv->set_focus(mv->focus() + qMax(shift/widg->row_size(), (shift > -shift) - (shift < -shift)));
// TODO update focus field rather in set_focus
mv->edit_load_focus();
}
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;
}
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