summaryrefslogtreecommitdiffstats
path: root/src/core/content_browser_client_qt.cpp
blob: 347636fe52656c81e7c9b590137aa624c04180bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "content_browser_client_qt.h"

#include "base/message_loop/message_loop.h"
#include "base/threading/thread_restrictions.h"
#include "content/public/browser/browser_main_parts.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/media_observer.h"
#include "content/public/browser/resource_dispatcher_host.h"
#include "content/public/common/main_function_params.h"
#include "content/public/common/url_constants.h"
#include "ui/gfx/screen.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_implementation.h"
#include "ui/gl/gl_share_group.h"

#include "browser_context_qt.h"
#include "desktop_screen_qt.h"
#include "dev_tools_http_handler_delegate_qt.h"
#include "media_capture_devices_dispatcher.h"
#include "resource_dispatcher_host_delegate_qt.h"
#include "web_contents_view_qt.h"

#include <QGuiApplication>
#include <QtGui/private/qopenglcontext_p.h>
#include <qpa/qplatformnativeinterface.h>

namespace {

ContentBrowserClientQt* gBrowserClient = 0; // Owned by ContentMainDelegateQt.

// Return a timeout suitable for the glib loop, -1 to block forever,
// 0 to return right away, or a timeout in milliseconds from now.
int GetTimeIntervalMilliseconds(const base::TimeTicks& from) {
  if (from.is_null())
    return -1;

  // Be careful here.  TimeDelta has a precision of microseconds, but we want a
  // value in milliseconds.  If there are 5.5ms left, should the delay be 5 or
  // 6?  It should be 6 to avoid executing delayed work too early.
  int delay = static_cast<int>(
      ceil((from - base::TimeTicks::Now()).InMillisecondsF()));

  // If this value is negative, then we need to run delayed work soon.
  return delay < 0 ? 0 : delay;
}

class MessagePumpForUIQt : public QObject,
                           public base::MessagePump
{
public:
    MessagePumpForUIQt()
        // Usually this gets passed through Run, but since we have
        // our own event loop, attach it explicitly ourselves.
        : m_delegate(base::MessageLoopForUI::current())
    {
    }

    virtual void Run(Delegate *delegate) Q_DECL_OVERRIDE
    {
        // FIXME: This could be needed if we want to run Chromium tests.
        // We could run a QEventLoop here.
    }

    virtual void Quit() Q_DECL_OVERRIDE
    {
        Q_UNREACHABLE();
    }

    virtual void ScheduleWork() Q_DECL_OVERRIDE
    {
        QCoreApplication::postEvent(this, new QEvent(QEvent::User));
    }

    virtual void ScheduleDelayedWork(const base::TimeTicks &delayed_work_time) Q_DECL_OVERRIDE
    {
        startTimer(GetTimeIntervalMilliseconds(delayed_work_time));
    }

protected:
    virtual void customEvent(QEvent *ev) Q_DECL_OVERRIDE
    {
        if (handleScheduledWork())
            QCoreApplication::postEvent(this, new QEvent(QEvent::User));
    }

    virtual void timerEvent(QTimerEvent *ev) Q_DECL_OVERRIDE
    {
        killTimer(ev->timerId());

        base::TimeTicks next_delayed_work_time;
        m_delegate->DoDelayedWork(&next_delayed_work_time);

        if (!next_delayed_work_time.is_null())
            startTimer(GetTimeIntervalMilliseconds(next_delayed_work_time));
    }

private:
    bool handleScheduledWork() {
        bool more_work_is_plausible = m_delegate->DoWork();

        base::TimeTicks delayed_work_time;
        more_work_is_plausible |= m_delegate->DoDelayedWork(&delayed_work_time);

        if (more_work_is_plausible)
            return true;

        more_work_is_plausible |= m_delegate->DoIdleWork();
        if (!more_work_is_plausible && !delayed_work_time.is_null())
            startTimer(GetTimeIntervalMilliseconds(delayed_work_time));

        return more_work_is_plausible;
    }

    Delegate *m_delegate;
};

base::MessagePump* messagePumpFactory()
{
    return new MessagePumpForUIQt;
}

} // namespace

class BrowserMainPartsQt : public content::BrowserMainParts
{
public:
    BrowserMainPartsQt()
        : content::BrowserMainParts()
    { }

    void PreMainMessageLoopStart() Q_DECL_OVERRIDE
    {
        base::MessageLoop::InitMessagePumpForUIFactory(::messagePumpFactory);
    }

    void PreMainMessageLoopRun() Q_DECL_OVERRIDE
    {
        m_browserContext.reset(new BrowserContextQt());
    }

    void PostMainMessageLoopRun()
    {
        m_browserContext.reset();
    }

    int PreCreateThreads() Q_DECL_OVERRIDE
    {
        base::ThreadRestrictions::SetIOAllowed(true);
        // Like ChromeBrowserMainExtraPartsAura::PreCreateThreads does.
        gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, new DesktopScreenQt);
        return 0;
    }

    BrowserContextQt* browser_context() const {
        return m_browserContext.get();
    }

private:
    scoped_ptr<BrowserContextQt> m_browserContext;

    DISALLOW_COPY_AND_ASSIGN(BrowserMainPartsQt);
};

class QtShareGLContext : public gfx::GLContext {
public:
    QtShareGLContext(QOpenGLContext *qtContext)
        : gfx::GLContext(0)
        , m_handle(0)
    {
        QString platform = qApp->platformName().toLower();
        QPlatformNativeInterface *pni = QGuiApplication::platformNativeInterface();
        if (platform == QStringLiteral("xcb")) {
            if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2)
                m_handle = pni->nativeResourceForContext(QByteArrayLiteral("eglcontext"), qtContext);
            else
                m_handle = pni->nativeResourceForContext(QByteArrayLiteral("glxcontext"), qtContext);
        } else if (platform == QStringLiteral("cocoa"))
            m_handle = pni->nativeResourceForContext(QByteArrayLiteral("cglcontextobj"), qtContext);
        else if (platform == QStringLiteral("qnx"))
            m_handle = pni->nativeResourceForContext(QByteArrayLiteral("eglcontext"), qtContext);
        else if (platform == QStringLiteral("eglfs"))
            m_handle = pni->nativeResourceForContext(QByteArrayLiteral("eglcontext"), qtContext);
        else if (platform == QStringLiteral("windows")) {
            if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2)
                m_handle = pni->nativeResourceForContext(QByteArrayLiteral("eglContext"), qtContext);
            else
                qFatal("Only the EGLGLES2 implementation is supported on %s platform.", platform.toLatin1().constData());
        } else {
            qFatal("%s platform not yet supported", platform.toLatin1().constData());
            // Add missing platforms once they work.
            Q_UNREACHABLE();
        }
    }

    virtual void* GetHandle() Q_DECL_OVERRIDE { return m_handle; }
    // Qt currently never creates contexts using robustness attributes.
    virtual bool WasAllocatedUsingRobustnessExtension() { return false; }

    // We don't care about the rest, this context shouldn't be used except for its handle.
    virtual bool Initialize(gfx::GLSurface *, gfx::GpuPreference) Q_DECL_OVERRIDE { Q_UNREACHABLE(); return false; }
    virtual void Destroy() Q_DECL_OVERRIDE { Q_UNREACHABLE(); }
    virtual bool MakeCurrent(gfx::GLSurface *) Q_DECL_OVERRIDE { Q_UNREACHABLE(); return false; }
    virtual void ReleaseCurrent(gfx::GLSurface *) Q_DECL_OVERRIDE { Q_UNREACHABLE(); }
    virtual bool IsCurrent(gfx::GLSurface *) Q_DECL_OVERRIDE { Q_UNREACHABLE(); return false; }
    virtual void SetSwapInterval(int) Q_DECL_OVERRIDE { Q_UNREACHABLE(); }

private:
    void *m_handle;
};

class ShareGroupQtQuick : public gfx::GLShareGroup {
public:
    virtual gfx::GLContext* GetContext() Q_DECL_OVERRIDE { return m_shareContextQtQuick.get(); }
    virtual void AboutToAddFirstContext() Q_DECL_OVERRIDE;

private:
    scoped_refptr<QtShareGLContext> m_shareContextQtQuick;
};

void ShareGroupQtQuick::AboutToAddFirstContext()
{
    // This currently has to be setup by ::main in all applications using QQuickWebEngineView with delegated rendering.
    QOpenGLContext *shareContext = QOpenGLContextPrivate::globalShareContext();
    if (!shareContext) {
        qFatal("QWebEngine: OpenGL resource sharing is not set up in QtQuick. Please make sure to call QWebEngine::initialize() in your main() function.");
    }
    m_shareContextQtQuick = make_scoped_refptr(new QtShareGLContext(shareContext));
}

content::WebContentsViewPort* ContentBrowserClientQt::OverrideCreateWebContentsView(content::WebContents* web_contents,
                                                                                    content::RenderViewHostDelegateView** render_view_host_delegate_view)
{
    WebContentsViewQt* rv = new WebContentsViewQt(web_contents);
    *render_view_host_delegate_view = rv;
    return rv;
}

ContentBrowserClientQt::ContentBrowserClientQt()
    : m_browserMainParts(0)
{
    Q_ASSERT(!gBrowserClient);
    gBrowserClient = this;
}

ContentBrowserClientQt::~ContentBrowserClientQt()
{
    gBrowserClient = 0;
}

ContentBrowserClientQt *ContentBrowserClientQt::Get()
{
    return gBrowserClient;
}

content::BrowserMainParts *ContentBrowserClientQt::CreateBrowserMainParts(const content::MainFunctionParams&)
{
    m_browserMainParts = new BrowserMainPartsQt;
    return m_browserMainParts;
}

void ContentBrowserClientQt::RenderProcessHostCreated(content::RenderProcessHost* host)
{
    // FIXME: Add a settings variable to enable/disable the file scheme.
    content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(host->GetID(), chrome::kFileScheme);
}

void ContentBrowserClientQt::ResourceDispatcherHostCreated()
{
    m_resourceDispatcherHostDelegate.reset(new ResourceDispatcherHostDelegateQt);
    content::ResourceDispatcherHost::Get()->SetDelegate(m_resourceDispatcherHostDelegate.get());
}

gfx::GLShareGroup *ContentBrowserClientQt::GetInProcessGpuShareGroup()
{
    if (!m_shareGroupQtQuick)
        m_shareGroupQtQuick = new ShareGroupQtQuick;
    return m_shareGroupQtQuick.get();
}

content::MediaObserver *ContentBrowserClientQt::GetMediaObserver()
{
    return MediaCaptureDevicesDispatcher::GetInstance();
}

BrowserContextQt* ContentBrowserClientQt::browser_context() {
    Q_ASSERT(m_browserMainParts);
    return static_cast<BrowserMainPartsQt*>(m_browserMainParts)->browser_context();
}

net::URLRequestContextGetter* ContentBrowserClientQt::CreateRequestContext(content::BrowserContext* content_browser_context, content::ProtocolHandlerMap* protocol_handlers)
{
    if (content_browser_context != browser_context())
        fprintf(stderr, "Warning: off the record browser context not implemented !\n");
    return static_cast<BrowserContextQt*>(browser_context())->CreateRequestContext(protocol_handlers);
}

void ContentBrowserClientQt::enableInspector(bool enable)
{
    if (enable && !m_devtools) {
        m_devtools.reset(new DevToolsHttpHandlerDelegateQt(browser_context()));
    } else if (!enable && m_devtools) {
        m_devtools.reset();
    }
}