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/*
* Copyright (c) 2012-2015 Christian Surlykke, Petr Vanek
*
* This file is part of qt-lightdm-greeter
* It is distributed under the LGPL 2.1 or later license.
* Please refer to the LICENSE file for a copy of the license.
*/
#include <QRect>
#include <QApplication>
#include <QDesktopWidget>
#include <QPalette>
#include <QString>
#include <QDebug>
#include <QTextEdit>
#include <QStyleFactory>
#include <QSvgWidget>
#include "mainwindow.h"
#include "loginform.h"
#include "settings.h"
static const Settings _settings;
MainWindow::MainWindow(bool primary, int screen, const QRect &screenRect, QWidget *parent) :
QWidget(parent),
m_Screen(screen),
m_Primary(primary)
{
setObjectName(QString("MainWindow_%1").arg(screen));
setGeometry(screenRect);
setBackground();
// display login dialog only in the main screen
int spaceY = screenRect.height() / 2;
if (showLoginForm()) {
m_LoginForm = new LoginForm(this);
spaceY -= m_LoginForm->height() / 2;
int maxX = screenRect.width() - m_LoginForm->width();
int maxY = screenRect.height() - m_LoginForm->height();
int defaultX = 50*maxX/100;
int defaultY = 50*maxY/100;
int offsetX = getOffset(_settings.offsetX(), maxX, defaultX);
int offsetY = getOffset(_settings.offsetY(), maxY, defaultY);
m_LoginForm->move(offsetX, offsetY);
m_LoginForm->show();
// This hack ensures that the primary screen will have focus
// if there are more screens (move the mouse cursor in the center
// of primary screen - not in the center of all X area). It
// won't affect single-screen environments.
int centerX = screenRect.width()/2 + screenRect.x();
int centerY = screenRect.height()/2 + screenRect.y();
QCursor::setPos(centerX, centerY);
}
// Message log at the bottom
m_messages = new QTextEdit(this);
int logHeight = screenRect.height() * 3 / 4;
if (logHeight > spaceY - 10) {
logHeight = spaceY - 10;
}
m_messages->move(0, screenRect.height() * 2 / 3);
m_messages->setFixedSize(screenRect.width(), screenRect.height() / 3);
QPalette p = m_messages->palette();
p.setColor(QPalette::Base, QColor(0,0,0,0)); // r,g,b,A
QPalette::Light;
m_messages->setPalette(p);
//m_messages->setText("TODO\nLogmessages\n\nWarnings\netc.");
m_messages->setReadOnly(true);
this->setStyle(QStyleFactory::create("#m_messages, QTextEdit { border: none; }")); // TODO: Get rid of black 1px border
// Banner
if (_settings.bannerImagePath().isEmpty()) {
QSvgWidget *banner = new QSvgWidget(_settings.bannerImagePath(), this);
if (banner->sizeHint().height() > 0) {
int bw, bh;
QSize sh = banner->sizeHint();
if (sh.height() < spaceY) {
banner->setFixedSize(sh);
bw = sh.width();
bh = sh.height();
} else {
int bh = spaceY - 20;
int bw = sh.width() * bh / sh.height();
banner->setFixedSize(bw, bh);
}
banner->move((screenRect.width() - bw) / 2, (spaceY - bh) / 2);
}
}
// TODO: UniLogo
}
MainWindow::~MainWindow()
{
}
bool MainWindow::showLoginForm()
{
return m_Primary;
}
void MainWindow::setFocus(Qt::FocusReason reason)
{
if (m_LoginForm) {
m_LoginForm->setFocus(reason);
}
else {
QWidget::setFocus(reason);
}
}
int MainWindow::getOffset(QString settingsOffset, int maxVal, int defaultVal)
{
int offset = defaultVal > maxVal ? maxVal : defaultVal;
if (! settingsOffset.isEmpty()) {
if (QRegExp("^\\d+px$", Qt::CaseInsensitive).exactMatch(settingsOffset)) {
offset = settingsOffset.left(settingsOffset.size() - 2).toInt();
if (offset > maxVal) offset = maxVal;
}
else if (QRegExp("^\\d+%$", Qt::CaseInsensitive).exactMatch(settingsOffset)) {
int offsetPct = settingsOffset.left(settingsOffset.size() -1).toInt();
if (offsetPct > 100) offsetPct = 100;
offset = (maxVal * offsetPct)/100;
}
else {
qWarning() << "Could not understand" << settingsOffset
<< "- must be of form <positivenumber>px or <positivenumber>%, e.g. 35px or 25%" ;
}
}
return offset;
}
void MainWindow::setBackground()
{
Qt::AspectRatioMode arMode = Qt::KeepAspectRatioByExpanding;
QString bgPath = _settings.backgrundImagePath();
if (bgPath.length() != 0) {
m_background = QImage(bgPath);
if (m_background.isNull()) {
qWarning() << "Not able to read" << bgPath << "as image";
}
}
if (m_background.isNull()) {
arMode = Qt::IgnoreAspectRatio;
QStringList cols = _settings.gradientColors();
if (cols.length() == 4 || cols.length() == 2) {
bool ok = true;
uint a, b, c, d;
if (ok) c = a = cols.at(0).toUInt(&ok, 16) | 0xff000000;
if (ok) d = b = cols.at(1).toUInt(&ok, 16) | 0xff000000;
if (cols.length() == 4) {
if (ok) c = cols.at(2).toUInt(&ok, 16) | 0xff000000;
if (ok) d = cols.at(3).toUInt(&ok, 16) | 0xff000000;
}
if (ok) {
m_background = QImage(cols.length() / 2, 2, QImage::Format_RGB32);
m_background.setPixel(0, 0, a);
m_background.setPixel(0, 1, c);
if (cols.length() == 4) {
m_background.setPixel(1, 0, b);
m_background.setPixel(1, 1, d);
}
}
}
}
if (m_background.isNull()) {
// Hard-coded default: Gradient
m_background = QImage(2, 2, QImage::Format_RGB32);
m_background.setPixel(0, 0, 0xffffffff);
m_background.setPixel(1, 0, 0xff888687);
m_background.setPixel(0, 1, 0xff888687);
m_background.setPixel(1, 1, 0xfff9a72b);
}
QPalette palette;
QRect rect = QApplication::desktop()->screenGeometry(m_Screen);
if (m_background.isNull()) {
palette.setColor(QPalette::Background, Qt::black);
}
else {
m_background = m_background.scaled(rect.width(), rect.height(), Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
int xoff = (m_background.width() - rect.width()) / 2;
int yoff = (m_background.height() - rect.height()) / 2;
if (xoff != 0 || yoff != 0) {
m_background = m_background.copy(xoff, yoff, m_background.width(), m_background.height());
}
QBrush brush(m_background);
palette.setBrush(this->backgroundRole(), brush);
}
this->setPalette(palette);
}
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