Commit 6c1b8cde authored by Kan-Ru Chen's avatar Kan-Ru Chen
Browse files

Bug 707589 - [Gonk] When screen is enabled/disabled, send visibility change... 

Bug 707589 - [Gonk] When screen is enabled/disabled, send visibility change events to windows [r=mwu]
parent 74ecc225

b2g/chrome/content/shell.js

+9 −0
Original line number Diff line number Diff line
@@ -93,6 +93,7 @@ var shell = { 


    window.addEventListener('MozApplicationManifest', this);

    window.addEventListener('mozfullscreenchange', this);

    window.addEventListener('sizemodechange', this);

    this.contentBrowser.addEventListener('load', this, true);



    // Until the volume can be set from the content side, set it to a
@@ -130,6 +131,7 @@ var shell = { 
  stop: function shell_stop() {

    window.removeEventListener('MozApplicationManifest', this);

    window.removeEventListener('mozfullscreenchange', this);

    window.removeEventListener('sizemodechange', this);

  },



  toggleDebug: function shell_toggleDebug() {
@@ -226,6 +228,13 @@ var shell = { 
        if (document.mozFullScreen)

          Services.fm.focusedWindow = window;

        break;

      case 'sizemodechange':

        if (window.windowState == window.STATE_MINIMIZED) {

          this.contentBrowser.docShell.isActive = false;

        } else {

          this.contentBrowser.docShell.isActive = true;

        }

        break;

      case 'load':

        this.contentBrowser.removeEventListener('load', this, true);

widget/gonk/nsWindow.cpp

+81 −0
Original line number Diff line number Diff line
@@ -37,11 +37,13 @@ 


#include <EGL/egl.h>

#include <EGL/eglext.h>

#include <fcntl.h>



#include "android/log.h"

#include "ui/FramebufferNativeWindow.h"



#include "mozilla/Hal.h"

#include "mozilla/FileUtils.h"

#include "Framebuffer.h"

#include "gfxContext.h"

#include "gfxUtils.h"
@@ -74,6 +76,82 @@ static nsWindow *gWindowToRedraw = nsnull; 
static nsWindow *gFocusedWindow = nsnull;

static android::FramebufferNativeWindow *gNativeWindow = nsnull;

static bool sFramebufferOpen;

static nsCOMPtr<nsIThread> sFramebufferWatchThread;



namespace {



class ScreenOnOffEvent : public nsRunnable {

public:

    ScreenOnOffEvent(bool on)

        : mIsOn(on)

    {}



    NS_IMETHOD Run() {

        nsSizeModeEvent event(true, NS_SIZEMODE, NULL);

        nsEventStatus status;



        event.time = PR_Now() / 1000;

        event.mSizeMode = mIsOn ? nsSizeMode_Fullscreen : nsSizeMode_Minimized;



        for (PRUint32 i = 0; i < sTopWindows.Length(); i++) {

            nsWindow *win = sTopWindows[i];

            event.widget = win;

            win->DispatchEvent(&event, status);

        }



        return NS_OK;

    }



private:

    bool mIsOn;

};



static const char* kSleepFile = "/sys/power/wait_for_fb_sleep";

static const char* kWakeFile = "/sys/power/wait_for_fb_wake";



class FramebufferWatcher : public nsRunnable {

public:

    FramebufferWatcher()

        : mScreenOnEvent(new ScreenOnOffEvent(true))

        , mScreenOffEvent(new ScreenOnOffEvent(false))

    {}



    NS_IMETHOD Run() {

        int len = 0;

        char buf;



        // Cannot use epoll here because kSleepFile and kWakeFile are

        // always ready to read and blocking.

        {

            ScopedClose fd(open(kSleepFile, O_RDONLY, 0));

            do {

                len = read(fd.mFd, &buf, 1);

            } while (len < 0 && errno == EINTR);

            NS_WARN_IF_FALSE(len >= 0, "WAIT_FOR_FB_SLEEP failed");

            NS_DispatchToMainThread(mScreenOffEvent);

        }



        {

            ScopedClose fd(open(kWakeFile, O_RDONLY, 0));

            do {

                len = read(fd.mFd, &buf, 1);

            } while (len < 0 && errno == EINTR);

            NS_WARN_IF_FALSE(len >= 0, "WAIT_FOR_FB_WAKE failed");

            NS_DispatchToMainThread(mScreenOnEvent);

        }



        // Dispatch to ourself.

        NS_DispatchToCurrentThread(this);



        return NS_OK;

    }



private:

    nsRefPtr<ScreenOnOffEvent> mScreenOnEvent;

    nsRefPtr<ScreenOnOffEvent> mScreenOffEvent;

};



} // anonymous namespace



nsWindow::nsWindow()

{
@@ -81,6 +159,9 @@ nsWindow::nsWindow() 
        // workaround Bug 725143

        hal::SetScreenEnabled(true);



        // Watching screen on/off state

        NS_NewThread(getter_AddRefs(sFramebufferWatchThread), new FramebufferWatcher());



        // We (apparently) don't have a way to tell if allocating the

        // fbs succeeded or failed.

        gNativeWindow = new android::FramebufferNativeWindow();