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#include <QtCore/QDebug>
#include <QtCore/QBitArray>
#include <QtCore/QStringList>
#include "widgetinfomodel.h"
namespace
{
inline QString get_widget_dconf_base(int index)
{
return QString("widget%1_").arg(index);
}
WidgetInfo::WidgetPosition canonicalize_widget_pos(WidgetInfo::WidgetPosition pos, WidgetInfo::WidgetSize size)
{
switch (size) {
case WidgetInfo::Size1Q:
return pos; // Any position is valid
case WidgetInfo::Size2QHorizontal:
switch (pos) {
case WidgetInfo::PosNW:
case WidgetInfo::PosNE:
return WidgetInfo::PosNW;
case WidgetInfo::PosSW:
case WidgetInfo::PosSE:
return WidgetInfo::PosSW;
}
break;
case WidgetInfo::Size2QVertical:
switch (pos) {
case WidgetInfo::PosNW:
case WidgetInfo::PosSW:
return WidgetInfo::PosNW;
case WidgetInfo::PosNE:
case WidgetInfo::PosSE:
return WidgetInfo::PosNE;
}
break;
case WidgetInfo::Size4Q:
return WidgetInfo::PosNW; // 4Q widgets use entire screen
}
return pos;
}
QBitArray used_positions(WidgetInfo::WidgetPosition pos, WidgetInfo::WidgetSize size)
{
QBitArray used(4, false);
switch (size) {
case WidgetInfo::Size1Q:
used[pos] = true;
break;
case WidgetInfo::Size2QHorizontal:
switch (pos) {
case WidgetInfo::PosNW:
case WidgetInfo::PosNE:
used[WidgetInfo::PosNW] = true;
used[WidgetInfo::PosNE] = true;
break;
case WidgetInfo::PosSW:
case WidgetInfo::PosSE:
used[WidgetInfo::PosNW] = true;
used[WidgetInfo::PosNE] = true;
break;
}
break;
case WidgetInfo::Size2QVertical:
switch (pos) {
case WidgetInfo::PosNW:
case WidgetInfo::PosSW:
used[WidgetInfo::PosNW] = true;
used[WidgetInfo::PosSW] = true;
break;
case WidgetInfo::PosNE:
case WidgetInfo::PosSE:
used[WidgetInfo::PosNE] = true;
used[WidgetInfo::PosSE] = true;
break;
}
break;
case WidgetInfo::Size4Q:
used.fill(true);
break;
}
return used;
}
}
WidgetInfoModel::WidgetInfoModel(const QString &settingsPrefix, QObject *parent) :
QAbstractListModel(parent),
_settings(new MDConfGroup(this))
{
_settings->setPath(settingsPrefix);
connect(_settings, &MDConfGroup::valueChanged,
this, &WidgetInfoModel::handleSettingChanged);
reload();
}
QHash<int, QByteArray> WidgetInfoModel::roleNames() const
{
QHash<int, QByteArray> roles;
roles[UrlRole] = "url";
roles[InvertRole] = "invert";
roles[PageRole] = "page";
roles[SizeRole] = "size";
roles[PositionRole] = "position";
return roles;
}
int WidgetInfoModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid()) return 0;
return _widgets.size();
}
QVariant WidgetInfoModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid()) return QVariant();
const int row = index.row();
if (row < 0 || row >= _widgets.size()) return QVariant();
switch (role) {
case UrlRole:
return QVariant::fromValue<QUrl>(_widgets[row].url());
case InvertRole:
return QVariant::fromValue<bool>(_widgets[row].invert());
case PageRole:
return QVariant::fromValue<int>(_widgets[row].page());
case SizeRole:
return QVariant::fromValue<int>(_widgets[row].size());
case PositionRole:
return QVariant::fromValue<int>(_widgets[row].position());
default:
qWarning() << "Unknown role:" << role;
return QVariant();
}
}
QList<WidgetInfo> WidgetInfoModel::toList() const
{
return _widgets.toList();
}
bool WidgetInfoModel::widgetOverlaps(int page, WidgetInfo::WidgetPosition pos, WidgetInfo::WidgetSize size) const
{
QBitArray usedPos = used_positions(pos, size);
for (int i = 0; i < _widgets.size(); i++) {
if (_widgets[i].url().isEmpty()) continue;
if (_widgets[i].page() != page) continue;
QBitArray intersection = usedPos & used_positions(_widgets[i].position(), _widgets[i].size());
if (intersection.count(true) > 0) {
return true;
}
}
return false;
}
int WidgetInfoModel::addWidget(const QUrl &url, int page, WidgetInfo::WidgetPosition pos, WidgetInfo::WidgetSize size)
{
int slot = findEmptySlot();
if (slot == -1) {
qWarning() << "No empty slots!"; // This shouldn't happen
return -1;
}
pos = canonicalize_widget_pos(pos, size);
qDebug() << "Adding widget" << url << page << pos << size;
if (widgetOverlaps(page, pos, size)) {
qWarning() << "Can't add the widget: it overlaps with an existing one!";
return -1;
}
const QString base = get_widget_dconf_base(slot);
_settings->setValue(base + "invert", QVariant::fromValue<bool>(false));
_settings->setValue(base + "page", QVariant::fromValue<int>(page));
_settings->setValue(base + "size", QVariant::fromValue<int>(size));
_settings->setValue(base + "position", QVariant::fromValue<int>(pos));
_settings->setValue(base + "url", QVariant::fromValue<QUrl>(url));
// MDConf watcher will update the model.
return slot;
}
void WidgetInfoModel::removeWidget(int widgetId)
{
const QString base = get_widget_dconf_base(widgetId);
_settings->setValue(base + "url", QVariant());
_settings->setValue(base + "invert", QVariant());
_settings->setValue(base + "page", QVariant());
_settings->setValue(base + "size", QVariant());
_settings->setValue(base + "position", QVariant());
}
void WidgetInfoModel::reload()
{
beginResetModel();
_widgets.resize(16);
for (int i = 0; i < _widgets.size(); i++) {
WidgetInfo &info = _widgets[i];
const QString base = get_widget_dconf_base(i);
info.setInvert(_settings->value(base + "invert").toBool());
info.setPage(_settings->value(base + "page").toInt());
info.setSize(static_cast<WidgetInfo::WidgetSize>(_settings->value(base + "size").toInt()));
info.setPosition(static_cast<WidgetInfo::WidgetPosition>(_settings->value(base + "position").toInt()));
info.setUrl(_settings->value(base + "url").toUrl());
}
endResetModel();
}
int WidgetInfoModel::findEmptySlot()
{
for (int i = 0; i < _widgets.size(); i++) {
if (_widgets[i].url().isEmpty()) {
return i;
}
}
return -1;
}
void WidgetInfoModel::handleSettingChanged(const QString &key)
{
static const QString widgetPrefix("widget");
if (key.startsWith(widgetPrefix)) {
QStringList parts = key.split('_');
if (parts.size() == 2) {
bool ok = false;
int slot = parts[0].mid(widgetPrefix.length()).toInt(&ok);
if (!ok || slot < 0 || slot >= _widgets.size()) {
qWarning() << "Invalid widget number:" << key;
}
WidgetInfo &info = _widgets[slot];
const QString &role = parts[1];
QVector<int> roles;
if (role == "url") {
info.setUrl(_settings->value(key).toUrl());
roles << UrlRole;
} else if (role == "invert") {
info.setInvert(_settings->value(key).toBool());
roles << InvertRole;
} else if (role == "page") {
info.setPage(_settings->value(key).toInt());
roles << PageRole;
} else if (role == "size") {
info.setSize(static_cast<WidgetInfo::WidgetSize>(_settings->value(key).toInt()));
roles << SizeRole;
} else if (role == "position") {
info.setPosition(static_cast<WidgetInfo::WidgetPosition>(_settings->value(key).toInt()));
roles << PositionRole;
} else {
qWarning() << "Unknown widget key changed:" << key;
return;
}
const QModelIndex index = createIndex(slot, 0);
emit dataChanged(index, index, roles);
} else {
qWarning() << "Unknown widget key changed:" << key;
}
}
}
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