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/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 2; -*- */
/* vim: set sw=4 ts=8 et tw=80 : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Unused.h"
#include "nsContentUtils.h"
#include "nsIAppShell.h"
#include "nsScreenManagerProxy.h"
#include "nsServiceManagerUtils.h"
#include "nsWidgetsCID.h"
#include "ScreenProxy.h"
namespace mozilla {
namespace widget {
using namespace mozilla::dom;
static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID);
ScreenProxy::ScreenProxy(nsScreenManagerProxy* aScreenManager, ScreenDetails aDetails)
: mContentsScaleFactor(0)
, mScreenManager(aScreenManager)
, mId(0)
, mPixelDepth(0)
, mColorDepth(0)
, mCacheValid(false)
, mCacheWillInvalidate(false)
{
PopulateByDetails(aDetails);
}
NS_IMETHODIMP
ScreenProxy::GetId(uint32_t *outId)
{
*outId = mId;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetRect(int32_t *outLeft,
int32_t *outTop,
int32_t *outWidth,
int32_t *outHeight)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*outLeft = mRect.x;
*outTop = mRect.y;
*outWidth = mRect.width;
*outHeight = mRect.height;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetRectDisplayPix(int32_t *outLeft,
int32_t *outTop,
int32_t *outWidth,
int32_t *outHeight)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*outLeft = mRectDisplayPix.x;
*outTop = mRectDisplayPix.y;
*outWidth = mRectDisplayPix.width;
*outHeight = mRectDisplayPix.height;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetAvailRect(int32_t *outLeft,
int32_t *outTop,
int32_t *outWidth,
int32_t *outHeight)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*outLeft = mAvailRect.x;
*outTop = mAvailRect.y;
*outWidth = mAvailRect.width;
*outHeight = mAvailRect.height;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetAvailRectDisplayPix(int32_t *outLeft,
int32_t *outTop,
int32_t *outWidth,
int32_t *outHeight)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*outLeft = mAvailRectDisplayPix.x;
*outTop = mAvailRectDisplayPix.y;
*outWidth = mAvailRectDisplayPix.width;
*outHeight = mAvailRectDisplayPix.height;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetPixelDepth(int32_t *aPixelDepth)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*aPixelDepth = mPixelDepth;
return NS_OK;
}
NS_IMETHODIMP
ScreenProxy::GetColorDepth(int32_t *aColorDepth)
{
if (!EnsureCacheIsValid()) {
return NS_ERROR_FAILURE;
}
*aColorDepth = mColorDepth;
return NS_OK;
}
void
ScreenProxy::PopulateByDetails(ScreenDetails aDetails)
{
mId = aDetails.id();
mRect = nsIntRect(aDetails.rect());
mRectDisplayPix = nsIntRect(aDetails.rectDisplayPix());
mAvailRect = nsIntRect(aDetails.availRect());
mAvailRectDisplayPix = nsIntRect(aDetails.availRectDisplayPix());
mPixelDepth = aDetails.pixelDepth();
mColorDepth = aDetails.colorDepth();
mContentsScaleFactor = aDetails.contentsScaleFactor();
}
bool
ScreenProxy::EnsureCacheIsValid()
{
if (mCacheValid) {
return true;
}
bool success = false;
// Kick off a synchronous IPC call to the parent to get the
// most up-to-date information.
ScreenDetails details;
Unused << mScreenManager->SendScreenRefresh(mId, &details, &success);
if (!success) {
NS_WARNING("Updating a ScreenProxy in the child process failed on parent side.");
return false;
}
PopulateByDetails(details);
mCacheValid = true;
InvalidateCacheOnNextTick();
return true;
}
void
ScreenProxy::InvalidateCacheOnNextTick()
{
if (mCacheWillInvalidate) {
return;
}
mCacheWillInvalidate = true;
nsContentUtils::RunInStableState(NewRunnableMethod(this, &ScreenProxy::InvalidateCache));
}
void
ScreenProxy::InvalidateCache()
{
mCacheValid = false;
mCacheWillInvalidate = false;
}
} // namespace widget
} // namespace mozilla
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