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/************************************************************************
**
** Copyright (C) 2019-2024 Kevin B. Hendricks, Stratford Ontario Canada
**
** This file is part of PageEdit.
**
** PageEdit 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 3 of the License, or
** (at your option) any later version.
**
** PageEdit 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 PageEdit. If not, see <http://www.gnu.org/licenses/>.
**
*************************************************************************/
#include <QByteArray>
#include <QtWebEngineWidgets>
#include <QtWebEngineCore>
#include <QWebEngineView>
#include <QWebEnginePage>
#include <QWebEngineSettings>
#include <QWebEngineProfile>
#include <QKeySequence>
#include <QApplication>
#include <QDir>
#include <QDebug>
#include "Utility.h"
#include "SettingsStore.h"
#include "Inspector.h"
static const QString SETTINGS_GROUP = "inspect_dialog";
const float ZOOM_STEP = 0.1f;
const float ZOOM_MIN = 0.09f;
const float ZOOM_MAX = 5.0f;
const float ZOOM_NORMAL = 1.0f;
#define DBG if(0)
Inspector::Inspector(QWidget *parent) :
QDockWidget(parent),
m_inspectView(new QWebEngineView(this)),
m_view(nullptr),
m_LoadingFinished(false),
m_LoadOkay(false),
m_ZoomIn(new QShortcut(QKeySequence(Qt::META | Qt::Key_Plus), this)),
m_ZoomOut(new QShortcut(QKeySequence(Qt::META | Qt::Key_Minus), this)),
m_ZoomReset(new QShortcut(QKeySequence(Qt::META | Qt::Key_0), this))
{
QWidget *basewidget = new QWidget(this);
QLayout *layout = new QVBoxLayout(basewidget);
basewidget->setLayout(layout);
layout->addWidget(m_inspectView);
layout->setContentsMargins(0, 0, 0, 0);
basewidget->setObjectName("PrimaryFrame");
setWidget(basewidget);
// QtWebEngine WebInspector needs to run javascript in MainWorld
// so override the app default but just for the inspector
m_inspectView->page()->settings()->setAttribute(QWebEngineSettings::JavascriptEnabled, true);
// The Inspector also needs access to local-storage to save its dark mode settings
// between launches
m_inspectView->page()->settings()->setAttribute(QWebEngineSettings::LocalStorageEnabled, true);
QString inspectorStorePath = Utility::DefinePrefsDir() + "/local-devtools";
QDir storageDir(inspectorStorePath);
if (!storageDir.exists()) {
storageDir.mkpath(inspectorStorePath);
}
m_inspectView->page()->profile()->setPersistentStoragePath(inspectorStorePath);
LoadSettings();
setWindowTitle(tr("Inspect Page or Element"));
connect(m_inspectView->page(), SIGNAL(loadFinished(bool)), this, SLOT(UpdateFinishedState(bool)));
connect(m_inspectView->page(), SIGNAL(loadStarted()), this, SLOT(LoadingStarted()));
connect(m_ZoomIn, SIGNAL(activated()), this, SLOT(ZoomIn()));
connect(m_ZoomOut, SIGNAL(activated()), this, SLOT(ZoomOut()));
connect(m_ZoomReset, SIGNAL(activated()), this, SLOT(ZoomReset()));
}
Inspector::~Inspector()
{
if (m_inspectView) {
m_inspectView->close();
m_view = nullptr;
m_inspectView->page()->setInspectedPage(nullptr);
delete m_inspectView;
m_inspectView = nullptr;
}
}
// Start of Zoom Related Routines
void Inspector::SetZoomFactor(float factor)
{
if (factor > ZOOM_MAX) factor = ZOOM_MAX;
if (factor < ZOOM_MIN) factor = ZOOM_MIN;
SettingsStore settings;
settings.setZoomInspector(factor);
SetCurrentZoomFactor(factor);
Zoom();
}
void Inspector::SetCurrentZoomFactor(float factor) { m_CurrentZoomFactor = factor; }
float Inspector::GetZoomFactor() const { return m_CurrentZoomFactor; }
void Inspector::ZoomIn() { ZoomByStep(true); }
void Inspector::ZoomOut() { ZoomByStep(false); }
void Inspector::ZoomReset() { SetZoomFactor(ZOOM_NORMAL); }
void Inspector::Zoom()
{
m_inspectView->setZoomFactor(m_CurrentZoomFactor);
}
void Inspector::ZoomByStep(bool zoom_in)
{
// zoom out - neg. zoom step, round down; zoom in - pos. zoom step, round UP
float zoom_stepping = zoom_in ? ZOOM_STEP : - ZOOM_STEP;
float rounding_helper = zoom_in ? 0.05f : - 0.05f;
float current_zoom_factor = GetZoomFactor();
float rounded_zoom_factor = Utility::RoundToOneDecimal(current_zoom_factor + rounding_helper);
if (qAbs(current_zoom_factor - rounded_zoom_factor) < 0.01f) {
SetZoomFactor(Utility::RoundToOneDecimal(current_zoom_factor + zoom_stepping));
} else {
SetZoomFactor(rounded_zoom_factor);
}
}
// End of Zoom Related Routines
void Inspector::LoadingStarted()
{
m_LoadingFinished = false;
m_LoadOkay = false;
}
void Inspector::UpdateFinishedState(bool okay)
{
m_LoadingFinished = true;
m_LoadOkay = okay;
}
void Inspector::InspectPageofView(QWebEngineView* view)
{
m_view = view;
if (m_view) {
m_inspectView->page()->setInspectedPage(m_view->page());
}
}
void Inspector::StopInspection()
{
SaveSettings();
m_view = nullptr;
m_inspectView->page()->setInspectedPage(nullptr);
}
QSize Inspector::sizeHint()
{
return QSize(400,200);
}
void Inspector::closeEvent(QCloseEvent* event)
{
DBG qDebug() << "Inspector Close Event";
StopInspection();
QDockWidget::closeEvent(event);
}
void Inspector::LoadSettings()
{
SettingsStore settings;
// in the basic user_preferences group
SetCurrentZoomFactor(settings.zoomInspector());
settings.beginGroup(SETTINGS_GROUP);
QByteArray geometry = settings.value("geometry").toByteArray();
if (!geometry.isNull()) {
restoreGeometry(geometry);
}
settings.endGroup();
}
void Inspector::SaveSettings()
{
SettingsStore settings;
settings.beginGroup(SETTINGS_GROUP);
QApplication::setOverrideCursor(Qt::WaitCursor);
settings.setValue("geometry", saveGeometry());
QApplication::restoreOverrideCursor();
settings.endGroup();
}
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