279 lines
7.7 KiB
C++
279 lines
7.7 KiB
C++
/*
|
|
* Cantata
|
|
*
|
|
* Copyright (c) 2011-2021 Craig Drummond <craig.p.drummond@gmail.com>
|
|
*
|
|
* ----
|
|
*
|
|
* 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; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "view.h"
|
|
#include "support/spinner.h"
|
|
#include "network/networkaccessmanager.h"
|
|
#include "gui/settings.h"
|
|
#include "widgets/textbrowser.h"
|
|
#include "support/gtkstyle.h"
|
|
#include "support/actioncollection.h"
|
|
#include "support/action.h"
|
|
#include "widgets/icons.h"
|
|
#include <QLabel>
|
|
#include <QScrollBar>
|
|
#include <QImage>
|
|
#include <QVBoxLayout>
|
|
#include <QNetworkReply>
|
|
#include <QLocale>
|
|
#include <QBuffer>
|
|
#include <QFile>
|
|
#include <QStackedWidget>
|
|
#include <QComboBox>
|
|
#include <QMenu>
|
|
#include <QMouseEvent>
|
|
#include <QWheelEvent>
|
|
#include <QTimer>
|
|
|
|
#define CONTEXT_CENTERED
|
|
|
|
static QString headerTag;
|
|
QString View::subTag;
|
|
|
|
QString View::encode(const QImage &img)
|
|
{
|
|
QByteArray bytes;
|
|
QBuffer buffer(&bytes);
|
|
buffer.open(QIODevice::WriteOnly);
|
|
img.save(&buffer, "PNG");
|
|
#ifdef CONTEXT_CENTERED
|
|
return QString("<div style=\"text-align:center;\"><img src=\"data:image/png;base64,%1\"/></div>").arg(QString(buffer.data().toBase64()));
|
|
#else
|
|
return QString("<img src=\"data:image/png;base64,%1\"/>").arg(QString(buffer.data().toBase64()));
|
|
#endif
|
|
}
|
|
|
|
void View::initHeaderTags()
|
|
{
|
|
bool small=Settings::self()->wikipediaIntroOnly() ;
|
|
headerTag=small ? "h2" : "h1";
|
|
subTag=small ? "h3" : "h2";
|
|
}
|
|
|
|
static TextBrowser * createView(QWidget *parent)
|
|
{
|
|
TextBrowser *text=new TextBrowser(parent);
|
|
if (GtkStyle::isActive()) {
|
|
text->verticalScrollBar()->setAttribute(Qt::WA_OpaquePaintEvent, false);
|
|
}
|
|
text->setOpenLinks(false);
|
|
text->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
text->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::MinimumExpanding);
|
|
text->setFrameShape(QFrame::NoFrame);
|
|
text->setReadOnly(true);
|
|
text->viewport()->setAutoFillBackground(false);
|
|
return text;
|
|
}
|
|
|
|
View::View(QWidget *parent, const QStringList &views)
|
|
: QWidget(parent)
|
|
, needToUpdate(false)
|
|
, spinner(nullptr)
|
|
, selector(nullptr)
|
|
, stack(nullptr)
|
|
{
|
|
QVBoxLayout *layout=new QVBoxLayout(this);
|
|
header=new QLabel(this);
|
|
|
|
if (views.isEmpty()) {
|
|
TextBrowser *t=createView(this);
|
|
texts.append(t);
|
|
} else {
|
|
stack=new QStackedWidget(this);
|
|
selector=new SelectorLabel(this);
|
|
selector->setUseArrow(true);
|
|
for (const QString &v: views) {
|
|
TextBrowser *t=createView(stack);
|
|
selector->addItem(v, v);
|
|
stack->addWidget(t);
|
|
texts.append(t);
|
|
}
|
|
connect(selector, SIGNAL(activated(int)), stack, SLOT(setCurrentIndex(int)));
|
|
connect(selector, SIGNAL(activated(int)), this, SIGNAL(viewChanged()));
|
|
}
|
|
|
|
header->setWordWrap(true);
|
|
header->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
|
|
header->setTextInteractionFlags(Qt::TextSelectableByMouse|Qt::TextSelectableByKeyboard);
|
|
|
|
layout->setMargin(2);
|
|
layout->addWidget(header);
|
|
if (views.isEmpty()) {
|
|
layout->addWidget(texts.at(0));
|
|
} else {
|
|
layout->addWidget(selector);
|
|
layout->addItem(new QSpacerItem(1, 1, QSizePolicy::MinimumExpanding, QSizePolicy::Fixed));
|
|
layout->addWidget(stack);
|
|
}
|
|
layout->addItem(new QSpacerItem(1, fontMetrics().height()/4, QSizePolicy::Fixed, QSizePolicy::Fixed));
|
|
if (headerTag.isEmpty()) {
|
|
initHeaderTags();
|
|
}
|
|
|
|
cancelJobAction=new Action(Icons::self()->cancelIcon, tr("Cancel"), this);
|
|
cancelJobAction->setEnabled(false);
|
|
connect(cancelJobAction, SIGNAL(triggered()), SLOT(abort()));
|
|
text=texts.at(0);
|
|
setMinimumWidth(Utils::scaleForDpi(300));
|
|
}
|
|
|
|
View::~View()
|
|
{
|
|
abort();
|
|
}
|
|
|
|
void View::clear()
|
|
{
|
|
setHeader(stdHeader);
|
|
for (TextBrowser *t: texts) {
|
|
t->clear();
|
|
}
|
|
}
|
|
|
|
void View::setHeader(const QString &str)
|
|
{
|
|
#ifdef CONTEXT_CENTERED
|
|
header->setText("<"+headerTag+" width=\"100%\" align=\"center\">"+str.toHtmlEscaped()+"</"+headerTag+">");
|
|
#else
|
|
header->setText("<"+headerTag+">"+str.toHtmlEscaped()+"</"+headerTag+">");
|
|
#endif
|
|
}
|
|
|
|
void View::setPicSize(const QSize &sz)
|
|
{
|
|
for (TextBrowser *t: texts) {
|
|
t->setPicSize(sz);
|
|
}
|
|
}
|
|
|
|
QSize View::picSize() const
|
|
{
|
|
return text->picSize();
|
|
}
|
|
|
|
QString View::createPicTag(const QImage &img, const QString &file)
|
|
{
|
|
if (!file.isEmpty() && QFile::exists(file)) {
|
|
#ifdef CONTEXT_CENTERED
|
|
return QString("<div style=\"text-align:center;\"><img src=\"%1\"/></div>").arg(file);
|
|
#else
|
|
return QString("<img src=\"%1\"/>").arg(file);
|
|
#endif
|
|
}
|
|
if (img.isNull()) {
|
|
return QString();
|
|
}
|
|
// No filename given, or file does not exist - therefore encode & scale image.
|
|
return encode(img);
|
|
}
|
|
|
|
void View::showEvent(QShowEvent *e)
|
|
{
|
|
if (needToUpdate) {
|
|
update(currentSong, true);
|
|
}
|
|
needToUpdate=false;
|
|
QWidget::showEvent(e);
|
|
}
|
|
|
|
void View::showSpinner(bool enableCancel)
|
|
{
|
|
if (!spinner) {
|
|
spinner=new Spinner(this);
|
|
spinner->setWidget(this);
|
|
}
|
|
if (!spinner->isActive()) {
|
|
spinner->start();
|
|
if (enableCancel) {
|
|
cancelJobAction->setEnabled(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
void View::hideSpinner(bool disableCancel)
|
|
{
|
|
if (spinner) {
|
|
spinner->stop();
|
|
if (disableCancel) {
|
|
cancelJobAction->setEnabled(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
void View::setEditable(bool e, int index)
|
|
{
|
|
TextBrowser *t=texts.at(index);
|
|
t->setReadOnly(!e);
|
|
t->viewport()->setAutoFillBackground(e);
|
|
}
|
|
|
|
void View::setPal(const QPalette &pal, const QColor &linkColor, const QColor &prevLinkColor)
|
|
{
|
|
for (TextBrowser *t: texts) {
|
|
// QTextBrowser seems to save link colour within the HTML, so we need to manually
|
|
// update this when the palette changes!
|
|
QString old=t->toHtml();
|
|
t->setPal(pal);
|
|
old=old.replace("color:"+prevLinkColor.name()+";", "color:"+linkColor.name()+";");
|
|
t->setHtml(old);
|
|
}
|
|
// header uses window/button text - so need to set these now...
|
|
QPalette hdrPal=pal;
|
|
hdrPal.setColor(QPalette::WindowText, pal.color(QPalette::Text));
|
|
hdrPal.setColor(QPalette::ButtonText, pal.color(QPalette::Text));
|
|
header->setPalette(hdrPal);
|
|
if (selector) {
|
|
selector->setPalette(hdrPal);
|
|
selector->setColor(pal.text().color());
|
|
}
|
|
}
|
|
|
|
void View::addEventFilter(QObject *obj)
|
|
{
|
|
installEventFilter(obj);
|
|
for (TextBrowser *t: texts) {
|
|
t->installEventFilter(obj);
|
|
t->viewport()->installEventFilter(obj);
|
|
}
|
|
header->installEventFilter(obj);
|
|
}
|
|
|
|
void View::setHtml(const QString &h, int index)
|
|
{
|
|
texts.at(index)->setText(QLatin1String("<html><head><style type=text/css>a:link {color:")+text->palette().link().color().name()+
|
|
QLatin1String("; text-decoration:underline;}</style></head><body>")+h+QLatin1String("</body></html>"));
|
|
}
|
|
|
|
void View::abort()
|
|
{
|
|
}
|
|
|
|
void View::setScaleImage(bool s)
|
|
{
|
|
for (TextBrowser *t: texts) {
|
|
t->setFullWidthImage(s);
|
|
}
|
|
}
|
|
|
|
#include "moc_view.cpp"
|