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gecko-dev/widget/nsBaseWidget.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/ArrayUtils.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/CompositorParent.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "nsBaseWidget.h"
#include "nsDeviceContext.h"
#include "nsCOMPtr.h"
#include "nsGfxCIID.h"
#include "nsWidgetsCID.h"
#include "nsServiceManagerUtils.h"
#include "nsIScreenManager.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsIServiceManager.h"
#include "mozilla/Preferences.h"
#include "BasicLayers.h"
#include "ClientLayerManager.h"
#include "mozilla/layers/Compositor.h"
#include "nsIXULRuntime.h"
#include "nsIXULWindow.h"
#include "nsIBaseWindow.h"
#include "nsXULPopupManager.h"
#include "nsIWidgetListener.h"
#include "nsIGfxInfo.h"
#include "npapi.h"
#include "base/thread.h"
#include "prdtoa.h"
#include "prenv.h"
#include "mozilla/Attributes.h"
#include "mozilla/unused.h"
#include "nsContentUtils.h"
#include "gfxPrefs.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/MouseEvents.h"
#include "GLConsts.h"
#include "mozilla/unused.h"
#include "mozilla/VsyncDispatcher.h"
#include "mozilla/layers/APZCTreeManager.h"
#include "mozilla/layers/APZEventState.h"
#include "mozilla/layers/APZThreadUtils.h"
#include "mozilla/layers/ChromeProcessController.h"
#include "mozilla/layers/InputAPZContext.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/dom/TabParent.h"
#include "nsRefPtrHashtable.h"
#include "TouchEvents.h"
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif
#ifdef DEBUG
#include "nsIObserver.h"
static void debug_RegisterPrefCallbacks();
#endif
#ifdef NOISY_WIDGET_LEAKS
static int32_t gNumWidgets;
#endif
#ifdef XP_MACOSX
#include "nsCocoaFeatures.h"
#endif
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
static nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>* sPluginWidgetList;
#endif
nsIRollupListener* nsBaseWidget::gRollupListener = nullptr;
using namespace mozilla::layers;
using namespace mozilla::ipc;
using namespace mozilla::widget;
using namespace mozilla;
using base::Thread;
nsIContent* nsBaseWidget::mLastRollup = nullptr;
// Global user preference for disabling native theme. Used
// in NativeWindowTheme.
bool gDisableNativeTheme = false;
// Async pump timer during injected long touch taps
#define TOUCH_INJECT_PUMP_TIMER_MSEC 50
#define TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC 1500
int32_t nsIWidget::sPointerIdCounter = 0;
nsAutoRollup::nsAutoRollup()
{
// remember if mLastRollup was null, and only clear it upon destruction
// if so. This prevents recursive usage of nsAutoRollup from clearing
// mLastRollup when it shouldn't.
wasClear = !nsBaseWidget::mLastRollup;
}
nsAutoRollup::~nsAutoRollup()
{
if (nsBaseWidget::mLastRollup && wasClear) {
NS_RELEASE(nsBaseWidget::mLastRollup);
}
}
NS_IMPL_ISUPPORTS(nsBaseWidget, nsIWidget, nsISupportsWeakReference)
//-------------------------------------------------------------------------
//
// nsBaseWidget constructor
//
//-------------------------------------------------------------------------
nsBaseWidget::nsBaseWidget()
: mWidgetListener(nullptr)
, mAttachedWidgetListener(nullptr)
, mCompositorVsyncDispatcher(nullptr)
, mCursor(eCursor_standard)
, mUpdateCursor(true)
, mBorderStyle(eBorderStyle_none)
, mUseLayersAcceleration(false)
, mForceLayersAcceleration(false)
, mTemporarilyUseBasicLayerManager(false)
, mUseAttachedEvents(false)
, mBounds(0,0,0,0)
, mOriginalBounds(nullptr)
, mClipRectCount(0)
, mSizeMode(nsSizeMode_Normal)
, mPopupLevel(ePopupLevelTop)
, mPopupType(ePopupTypeAny)
{
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets++;
printf("WIDGETS+ = %d\n", gNumWidgets);
#endif
#ifdef DEBUG
debug_RegisterPrefCallbacks();
#endif
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
if (!sPluginWidgetList) {
sPluginWidgetList = new nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>();
}
#endif
mShutdownObserver = new WidgetShutdownObserver(this);
nsContentUtils::RegisterShutdownObserver(mShutdownObserver);
}
NS_IMPL_ISUPPORTS(WidgetShutdownObserver, nsIObserver)
NS_IMETHODIMP
WidgetShutdownObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *aData)
{
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0 &&
mWidget) {
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
if (sPluginWidgetList) {
delete sPluginWidgetList;
sPluginWidgetList = nullptr;
}
#endif
mWidget->Shutdown();
nsContentUtils::UnregisterShutdownObserver(this);
}
return NS_OK;
}
void
nsBaseWidget::Shutdown()
{
DestroyCompositor();
mShutdownObserver = nullptr;
}
static void DeferredDestroyCompositor(CompositorParent* aCompositorParent,
CompositorChild* aCompositorChild)
{
// Bug 848949 needs to be fixed before
// we can close the channel properly
//aCompositorChild->Close();
aCompositorParent->Release();
aCompositorChild->Release();
}
void nsBaseWidget::DestroyCompositor()
{
if (mCompositorChild) {
mCompositorChild->SendWillStop();
mCompositorChild->Destroy();
// The call just made to SendWillStop can result in IPC from the
// CompositorParent to the CompositorChild (e.g. caused by the destruction
// of shared memory). We need to ensure this gets processed by the
// CompositorChild before it gets destroyed. It suffices to ensure that
// events already in the MessageLoop get processed before the
// CompositorChild is destroyed, so we add a task to the MessageLoop to
// handle compositor desctruction.
MessageLoop::current()->PostTask(FROM_HERE,
NewRunnableFunction(DeferredDestroyCompositor, mCompositorParent,
mCompositorChild));
// The DestroyCompositor task we just added to the MessageLoop will handle
// releasing mCompositorParent and mCompositorChild.
unused << mCompositorParent.forget();
unused << mCompositorChild.forget();
}
}
//-------------------------------------------------------------------------
//
// nsBaseWidget destructor
//
//-------------------------------------------------------------------------
nsBaseWidget::~nsBaseWidget()
{
if (mLayerManager &&
mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC) {
static_cast<BasicLayerManager*>(mLayerManager.get())->ClearRetainerWidget();
}
if (mLayerManager) {
mLayerManager->Destroy();
mLayerManager = nullptr;
}
if (mShutdownObserver) {
// If the shutdown observer is currently processing observers,
// then UnregisterShutdownObserver won't stop our Observer
// function from being called. Make sure we don't try
// to reference the dead widget.
mShutdownObserver->mWidget = nullptr;
nsContentUtils::UnregisterShutdownObserver(mShutdownObserver);
}
DestroyCompositor();
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets--;
printf("WIDGETS- = %d\n", gNumWidgets);
#endif
delete mOriginalBounds;
// Can have base widgets that are things like tooltips which don't have CompositorVsyncDispatchers
if (mCompositorVsyncDispatcher) {
mCompositorVsyncDispatcher->Shutdown();
}
}
//-------------------------------------------------------------------------
//
// Basic create.
//
//-------------------------------------------------------------------------
void nsBaseWidget::BaseCreate(nsIWidget *aParent,
const nsIntRect &aRect,
nsWidgetInitData *aInitData)
{
static bool gDisableNativeThemeCached = false;
if (!gDisableNativeThemeCached) {
Preferences::AddBoolVarCache(&gDisableNativeTheme,
"mozilla.widget.disable-native-theme",
gDisableNativeTheme);
gDisableNativeThemeCached = true;
}
// keep a reference to the device context
if (nullptr != aInitData) {
mWindowType = aInitData->mWindowType;
mBorderStyle = aInitData->mBorderStyle;
mPopupLevel = aInitData->mPopupLevel;
mPopupType = aInitData->mPopupHint;
mRequireOffMainThreadCompositing = aInitData->mRequireOffMainThreadCompositing;
}
if (aParent) {
aParent->AddChild(this);
}
}
NS_IMETHODIMP nsBaseWidget::CaptureMouse(bool aCapture)
{
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Accessor functions to get/set the client data
//
//-------------------------------------------------------------------------
nsIWidgetListener* nsBaseWidget::GetWidgetListener()
{
return mWidgetListener;
}
void nsBaseWidget::SetWidgetListener(nsIWidgetListener* aWidgetListener)
{
mWidgetListener = aWidgetListener;
}
already_AddRefed<nsIWidget>
nsBaseWidget::CreateChild(const nsIntRect &aRect,
nsWidgetInitData *aInitData,
bool aForceUseIWidgetParent)
{
nsIWidget* parent = this;
nsNativeWidget nativeParent = nullptr;
if (!aForceUseIWidgetParent) {
// Use only either parent or nativeParent, not both, to match
// existing code. Eventually Create() should be divested of its
// nativeWidget parameter.
nativeParent = parent ? parent->GetNativeData(NS_NATIVE_WIDGET) : nullptr;
parent = nativeParent ? nullptr : parent;
MOZ_ASSERT(!parent || !nativeParent, "messed up logic");
}
nsCOMPtr<nsIWidget> widget;
if (aInitData && aInitData->mWindowType == eWindowType_popup) {
widget = AllocateChildPopupWidget();
} else {
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
widget = do_CreateInstance(kCChildCID);
}
if (widget &&
NS_SUCCEEDED(widget->Create(parent, nativeParent, aRect, aInitData))) {
return widget.forget();
}
return nullptr;
}
// Attach a view to our widget which we'll send events to.
NS_IMETHODIMP
nsBaseWidget::AttachViewToTopLevel(bool aUseAttachedEvents)
{
NS_ASSERTION((mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog ||
mWindowType == eWindowType_invisible ||
mWindowType == eWindowType_child),
"Can't attach to window of that type");
mUseAttachedEvents = aUseAttachedEvents;
return NS_OK;
}
nsIWidgetListener* nsBaseWidget::GetAttachedWidgetListener()
{
return mAttachedWidgetListener;
}
void nsBaseWidget::SetAttachedWidgetListener(nsIWidgetListener* aListener)
{
mAttachedWidgetListener = aListener;
}
//-------------------------------------------------------------------------
//
// Close this nsBaseWidget
//
//-------------------------------------------------------------------------
NS_METHOD nsBaseWidget::Destroy()
{
// Just in case our parent is the only ref to us
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
// disconnect from the parent
nsIWidget *parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set this nsBaseWidget's parent
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetParent(nsIWidget* aNewParent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget parent
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetParent(void)
{
return nullptr;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget top level widget
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetTopLevelWidget()
{
nsIWidget *topLevelWidget = nullptr, *widget = this;
while (widget) {
topLevelWidget = widget;
widget = widget->GetParent();
}
return topLevelWidget;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget's top (non-sheet) parent (if it's a sheet)
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetSheetWindowParent(void)
{
return nullptr;
}
float nsBaseWidget::GetDPI()
{
return 96.0f;
}
CSSToLayoutDeviceScale nsIWidget::GetDefaultScale()
{
double devPixelsPerCSSPixel = DefaultScaleOverride();
if (devPixelsPerCSSPixel <= 0.0) {
devPixelsPerCSSPixel = GetDefaultScaleInternal();
}
return CSSToLayoutDeviceScale(devPixelsPerCSSPixel);
}
/* static */
double nsIWidget::DefaultScaleOverride()
{
// The number of device pixels per CSS pixel. A value <= 0 means choose
// automatically based on the DPI. A positive value is used as-is. This effectively
// controls the size of a CSS "px".
double devPixelsPerCSSPixel = -1.0;
nsAdoptingCString prefString = Preferences::GetCString("layout.css.devPixelsPerPx");
if (!prefString.IsEmpty()) {
devPixelsPerCSSPixel = PR_strtod(prefString, nullptr);
}
return devPixelsPerCSSPixel;
}
//-------------------------------------------------------------------------
//
// Add a child to the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::AddChild(nsIWidget* aChild)
{
NS_PRECONDITION(!aChild->GetNextSibling() && !aChild->GetPrevSibling(),
"aChild not properly removed from its old child list");
if (!mFirstChild) {
mFirstChild = mLastChild = aChild;
} else {
// append to the list
NS_ASSERTION(mLastChild, "Bogus state");
NS_ASSERTION(!mLastChild->GetNextSibling(), "Bogus state");
mLastChild->SetNextSibling(aChild);
aChild->SetPrevSibling(mLastChild);
mLastChild = aChild;
}
}
//-------------------------------------------------------------------------
//
// Remove a child from the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::RemoveChild(nsIWidget* aChild)
{
#ifdef DEBUG
#ifdef XP_MACOSX
// nsCocoaWindow doesn't implement GetParent, so in that case parent will be
// null and we'll just have to do without this assertion.
nsIWidget* parent = aChild->GetParent();
NS_ASSERTION(!parent || parent == this, "Not one of our kids!");
#else
NS_ASSERTION(aChild->GetParent() == this, "Not one of our kids!");
#endif
#endif
if (mLastChild == aChild) {
mLastChild = mLastChild->GetPrevSibling();
}
if (mFirstChild == aChild) {
mFirstChild = mFirstChild->GetNextSibling();
}
// Now remove from the list. Make sure that we pass ownership of the tail
// of the list correctly before we have aChild let go of it.
nsIWidget* prev = aChild->GetPrevSibling();
nsIWidget* next = aChild->GetNextSibling();
if (prev) {
prev->SetNextSibling(next);
}
if (next) {
next->SetPrevSibling(prev);
}
aChild->SetNextSibling(nullptr);
aChild->SetPrevSibling(nullptr);
}
//-------------------------------------------------------------------------
//
// Sets widget's position within its parent's child list.
//
//-------------------------------------------------------------------------
void nsBaseWidget::SetZIndex(int32_t aZIndex)
{
// Hold a ref to ourselves just in case, since we're going to remove
// from our parent.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
mZIndex = aZIndex;
// reorder this child in its parent's list.
nsBaseWidget* parent = static_cast<nsBaseWidget*>(GetParent());
if (parent) {
parent->RemoveChild(this);
// Scope sib outside the for loop so we can check it afterward
nsIWidget* sib = parent->GetFirstChild();
for ( ; sib; sib = sib->GetNextSibling()) {
int32_t childZIndex = GetZIndex();
if (aZIndex < childZIndex) {
// Insert ourselves before sib
nsIWidget* prev = sib->GetPrevSibling();
mNextSibling = sib;
mPrevSibling = prev;
sib->SetPrevSibling(this);
if (prev) {
prev->SetNextSibling(this);
} else {
NS_ASSERTION(sib == parent->mFirstChild, "Broken child list");
// We've taken ownership of sib, so it's safe to have parent let
// go of it
parent->mFirstChild = this;
}
PlaceBehind(eZPlacementBelow, sib, false);
break;
}
}
// were we added to the list?
if (!sib) {
parent->AddChild(this);
}
}
}
//-------------------------------------------------------------------------
//
// Places widget behind the given widget (platforms must override)
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
nsIWidget *aWidget, bool aActivate)
{
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Maximize, minimize or restore the window. The BaseWidget implementation
// merely stores the state.
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetSizeMode(int32_t aMode)
{
if (aMode == nsSizeMode_Normal ||
aMode == nsSizeMode_Minimized ||
aMode == nsSizeMode_Maximized ||
aMode == nsSizeMode_Fullscreen) {
mSizeMode = (nsSizeMode) aMode;
return NS_OK;
}
return NS_ERROR_ILLEGAL_VALUE;
}
//-------------------------------------------------------------------------
//
// Get this component cursor
//
//-------------------------------------------------------------------------
nsCursor nsBaseWidget::GetCursor()
{
return mCursor;
}
NS_METHOD nsBaseWidget::SetCursor(nsCursor aCursor)
{
mCursor = aCursor;
return NS_OK;
}
NS_IMETHODIMP nsBaseWidget::SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Window transparency methods
//
//-------------------------------------------------------------------------
void nsBaseWidget::SetTransparencyMode(nsTransparencyMode aMode) {
}
nsTransparencyMode nsBaseWidget::GetTransparencyMode() {
return eTransparencyOpaque;
}
bool
nsBaseWidget::IsWindowClipRegionEqual(const nsTArray<nsIntRect>& aRects)
{
return mClipRects &&
mClipRectCount == aRects.Length() &&
memcmp(mClipRects, aRects.Elements(), sizeof(nsIntRect)*mClipRectCount) == 0;
}
void
nsBaseWidget::StoreWindowClipRegion(const nsTArray<nsIntRect>& aRects)
{
mClipRectCount = aRects.Length();
mClipRects = new nsIntRect[mClipRectCount];
if (mClipRects) {
memcpy(mClipRects, aRects.Elements(), sizeof(nsIntRect)*mClipRectCount);
}
}
void
nsBaseWidget::GetWindowClipRegion(nsTArray<nsIntRect>* aRects)
{
if (mClipRects) {
aRects->AppendElements(mClipRects.get(), mClipRectCount);
} else {
aRects->AppendElement(nsIntRect(0, 0, mBounds.width, mBounds.height));
}
}
const nsIntRegion
nsBaseWidget::RegionFromArray(const nsTArray<nsIntRect>& aRects)
{
nsIntRegion region;
for (uint32_t i = 0; i < aRects.Length(); ++i) {
region.Or(region, aRects[i]);
}
return region;
}
void
nsBaseWidget::ArrayFromRegion(const nsIntRegion& aRegion, nsTArray<nsIntRect>& aRects)
{
const nsIntRect* r;
for (nsIntRegionRectIterator iter(aRegion); (r = iter.Next());) {
aRects.AppendElement(*r);
}
}
nsresult
nsBaseWidget::SetWindowClipRegion(const nsTArray<nsIntRect>& aRects,
bool aIntersectWithExisting)
{
if (!aIntersectWithExisting) {
StoreWindowClipRegion(aRects);
} else {
// get current rects
nsTArray<nsIntRect> currentRects;
GetWindowClipRegion(&currentRects);
// create region from them
nsIntRegion currentRegion = RegionFromArray(currentRects);
// create region from new rects
nsIntRegion newRegion = RegionFromArray(aRects);
// intersect regions
nsIntRegion intersection;
intersection.And(currentRegion, newRegion);
// create int rect array from intersection
nsTArray<nsIntRect> rects;
ArrayFromRegion(intersection, rects);
// store
StoreWindowClipRegion(rects);
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set window shadow style
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetWindowShadowStyle(int32_t aMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Hide window borders/decorations for this widget
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::HideWindowChrome(bool aShouldHide)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Put the window into full-screen mode
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::MakeFullScreen(bool aFullScreen, nsIScreen* aScreen)
{
HideWindowChrome(aFullScreen);
if (aFullScreen) {
if (!mOriginalBounds)
mOriginalBounds = new nsIntRect();
GetScreenBounds(*mOriginalBounds);
// convert dev pix to display pix for window manipulation
CSSToLayoutDeviceScale scale = GetDefaultScale();
mOriginalBounds->x = NSToIntRound(mOriginalBounds->x / scale.scale);
mOriginalBounds->y = NSToIntRound(mOriginalBounds->y / scale.scale);
mOriginalBounds->width = NSToIntRound(mOriginalBounds->width / scale.scale);
mOriginalBounds->height = NSToIntRound(mOriginalBounds->height / scale.scale);
// Move to top-left corner of screen and size to the screen dimensions
nsCOMPtr<nsIScreenManager> screenManager;
screenManager = do_GetService("@mozilla.org/gfx/screenmanager;1");
NS_ASSERTION(screenManager, "Unable to grab screenManager.");
if (screenManager) {
nsCOMPtr<nsIScreen> screen = aScreen;
if (!screen) {
// no screen was passed in, use the one that the window is on
screenManager->ScreenForRect(mOriginalBounds->x,
mOriginalBounds->y,
mOriginalBounds->width,
mOriginalBounds->height,
getter_AddRefs(screen));
}
if (screen) {
int32_t left, top, width, height;
if (NS_SUCCEEDED(screen->GetRectDisplayPix(&left, &top, &width, &height))) {
Resize(left, top, width, height, true);
}
}
}
} else if (mOriginalBounds) {
Resize(mOriginalBounds->x, mOriginalBounds->y, mOriginalBounds->width,
mOriginalBounds->height, true);
}
return NS_OK;
}
nsBaseWidget::AutoLayerManagerSetup::AutoLayerManagerSetup(
nsBaseWidget* aWidget, gfxContext* aTarget,
BufferMode aDoubleBuffering, ScreenRotation aRotation)
: mWidget(aWidget)
{
mLayerManager = static_cast<BasicLayerManager*>(mWidget->GetLayerManager());
if (mLayerManager) {
NS_ASSERTION(mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC,
"AutoLayerManagerSetup instantiated for non-basic layer backend!");
mLayerManager->SetDefaultTarget(aTarget);
mLayerManager->SetDefaultTargetConfiguration(aDoubleBuffering, aRotation);
}
}
nsBaseWidget::AutoLayerManagerSetup::~AutoLayerManagerSetup()
{
if (mLayerManager) {
NS_ASSERTION(mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC,
"AutoLayerManagerSetup instantiated for non-basic layer backend!");
mLayerManager->SetDefaultTarget(nullptr);
mLayerManager->SetDefaultTargetConfiguration(mozilla::layers::BufferMode::BUFFER_NONE, ROTATION_0);
}
}
nsBaseWidget::AutoUseBasicLayerManager::AutoUseBasicLayerManager(nsBaseWidget* aWidget)
: mWidget(aWidget)
{
mPreviousTemporarilyUseBasicLayerManager =
mWidget->mTemporarilyUseBasicLayerManager;
mWidget->mTemporarilyUseBasicLayerManager = true;
}
nsBaseWidget::AutoUseBasicLayerManager::~AutoUseBasicLayerManager()
{
mWidget->mTemporarilyUseBasicLayerManager =
mPreviousTemporarilyUseBasicLayerManager;
}
bool
nsBaseWidget::ComputeShouldAccelerate(bool aDefault)
{
#if defined(XP_WIN) || defined(ANDROID) || \
defined(MOZ_GL_PROVIDER) || defined(XP_MACOSX) || defined(MOZ_WIDGET_QT)
bool accelerateByDefault = true;
#else
bool accelerateByDefault = false;
#endif
#ifdef XP_MACOSX
// 10.6.2 and lower have a bug involving textures and pixel buffer objects
// that caused bug 629016, so we don't allow OpenGL-accelerated layers on
// those versions of the OS.
// This will still let full-screen video be accelerated on OpenGL, because
// that XUL widget opts in to acceleration, but that's probably OK.
accelerateByDefault = nsCocoaFeatures::AccelerateByDefault();
#endif
// we should use AddBoolPrefVarCache
bool disableAcceleration = gfxPrefs::LayersAccelerationDisabled();
mForceLayersAcceleration = gfxPrefs::LayersAccelerationForceEnabled();
const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
accelerateByDefault = accelerateByDefault ||
(acceleratedEnv && (*acceleratedEnv != '0'));
nsCOMPtr<nsIXULRuntime> xr = do_GetService("@mozilla.org/xre/runtime;1");
bool safeMode = false;
if (xr)
xr->GetInSafeMode(&safeMode);
bool whitelisted = false;
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
// bug 655578: on X11 at least, we must always call GetData (even if we don't need that information)
// as that's what causes GfxInfo initialization which kills the zombie 'glxtest' process.
// initially we relied on the fact that GetFeatureStatus calls GetData for us, but bug 681026 showed
// that assumption to be unsafe.
gfxInfo->GetData();
int32_t status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_STATUS_OK) {
whitelisted = true;
}
}
}
if (disableAcceleration || safeMode)
return false;
if (mForceLayersAcceleration)
return true;
if (!whitelisted) {
static int tell_me_once = 0;
if (!tell_me_once) {
NS_WARNING("OpenGL-accelerated layers are not supported on this system");
tell_me_once = 1;
}
#ifdef MOZ_WIDGET_ANDROID
NS_RUNTIMEABORT("OpenGL-accelerated layers are a hard requirement on this platform. "
"Cannot continue without support for them");
#endif
return false;
}
if (accelerateByDefault)
return true;
/* use the window acceleration flag */
return aDefault;
}
CompositorParent* nsBaseWidget::NewCompositorParent(int aSurfaceWidth,
int aSurfaceHeight)
{
return new CompositorParent(this, false, aSurfaceWidth, aSurfaceHeight);
}
void nsBaseWidget::CreateCompositor()
{
nsIntRect rect;
GetBounds(rect);
CreateCompositor(rect.width, rect.height);
}
already_AddRefed<GeckoContentController>
nsBaseWidget::CreateRootContentController()
{
nsRefPtr<GeckoContentController> controller = new ChromeProcessController(this, mAPZEventState);
return controller.forget();
}
class ChromeProcessSetTargetAPZCCallback : public SetTargetAPZCCallback {
public:
explicit ChromeProcessSetTargetAPZCCallback(APZCTreeManager* aTreeManager)
: mTreeManager(aTreeManager)
{}
void Run(uint64_t aInputBlockId, const nsTArray<ScrollableLayerGuid>& aTargets) const MOZ_OVERRIDE {
MOZ_ASSERT(NS_IsMainThread());
// need a local var to disambiguate between the SetTargetAPZC overloads.
void (APZCTreeManager::*setTargetApzcFunc)(uint64_t, const nsTArray<ScrollableLayerGuid>&)
= &APZCTreeManager::SetTargetAPZC;
APZThreadUtils::RunOnControllerThread(NewRunnableMethod(
mTreeManager.get(), setTargetApzcFunc, aInputBlockId, aTargets));
}
private:
nsRefPtr<APZCTreeManager> mTreeManager;
};
class ChromeProcessContentReceivedInputBlockCallback : public ContentReceivedInputBlockCallback {
public:
explicit ChromeProcessContentReceivedInputBlockCallback(APZCTreeManager* aTreeManager)
: mTreeManager(aTreeManager)
{}
void Run(const ScrollableLayerGuid& aGuid, uint64_t aInputBlockId, bool aPreventDefault) const MOZ_OVERRIDE {
MOZ_ASSERT(NS_IsMainThread());
APZThreadUtils::RunOnControllerThread(NewRunnableMethod(
mTreeManager.get(), &APZCTreeManager::ContentReceivedInputBlock,
aInputBlockId, aPreventDefault));
}
private:
nsRefPtr<APZCTreeManager> mTreeManager;
};
void nsBaseWidget::ConfigureAPZCTreeManager()
{
uint64_t rootLayerTreeId = mCompositorParent->RootLayerTreeId();
mAPZC = CompositorParent::GetAPZCTreeManager(rootLayerTreeId);
MOZ_ASSERT(mAPZC);
mAPZC->SetDPI(GetDPI());
mAPZEventState = new APZEventState(this,
new ChromeProcessContentReceivedInputBlockCallback(mAPZC));
mSetTargetAPZCCallback = new ChromeProcessSetTargetAPZCCallback(mAPZC);
nsRefPtr<GeckoContentController> controller = CreateRootContentController();
if (controller) {
CompositorParent::SetControllerForLayerTree(rootLayerTreeId, controller);
}
}
nsEventStatus
nsBaseWidget::DispatchEventForAPZ(WidgetGUIEvent* aEvent,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId)
{
MOZ_ASSERT(NS_IsMainThread());
InputAPZContext context(aGuid, aInputBlockId);
// If this is a touch event and APZ has targeted it to an APZC in the root
// process, apply that APZC's callback-transform before dispatching the
// event. If the event is instead targeted to an APZC in the child process,
// the transform will be applied in the child process before dispatching
// the event there (see e.g. TabChild::RecvRealTouchEvent()).
// TODO: Do other types of events (than touch) need this?
if (aEvent->AsTouchEvent() && aGuid.mLayersId == mCompositorParent->RootLayerTreeId()) {
APZCCallbackHelper::ApplyCallbackTransform(*aEvent->AsTouchEvent(), aGuid,
GetDefaultScale(), 1.0f);
}
nsEventStatus status;
DispatchEvent(aEvent, status);
if (mAPZC && !context.WasRoutedToChildProcess()) {
// EventStateManager did not route the event into the child process.
// It's safe to communicate to APZ that the event has been processed.
// TODO: Eventually we'll be able to move the SendSetTargetAPZCNotification
// call into APZEventState::Process*Event() as well.
if (WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent()) {
if (touchEvent->message == NS_TOUCH_START) {
APZCCallbackHelper::SendSetTargetAPZCNotification(this, GetDocument(), *aEvent,
aGuid, aInputBlockId, mSetTargetAPZCCallback);
}
mAPZEventState->ProcessTouchEvent(*touchEvent, aGuid, aInputBlockId);
} else if (WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent()) {
APZCCallbackHelper::SendSetTargetAPZCNotification(this, GetDocument(), *aEvent,
aGuid, aInputBlockId, mSetTargetAPZCCallback);
mAPZEventState->ProcessWheelEvent(*wheelEvent, aGuid, aInputBlockId);
}
}
return status;
}
void
nsBaseWidget::GetPreferredCompositorBackends(nsTArray<LayersBackend>& aHints)
{
if (mUseLayersAcceleration) {
aHints.AppendElement(LayersBackend::LAYERS_OPENGL);
}
aHints.AppendElement(LayersBackend::LAYERS_BASIC);
}
nsIDocument*
nsBaseWidget::GetDocument() const
{
if (mWidgetListener) {
if (nsIPresShell* presShell = mWidgetListener->GetPresShell()) {
return presShell->GetDocument();
}
}
return nullptr;
}
void nsBaseWidget::CreateCompositorVsyncDispatcher()
{
if (gfxPrefs::HardwareVsyncEnabled()) {
// Parent directly listens to the vsync source whereas
// child process communicate via IPC
// Should be called AFTER gfxPlatform is initialized
if (XRE_IsParentProcess()) {
mCompositorVsyncDispatcher = new CompositorVsyncDispatcher();
}
}
}
CompositorVsyncDispatcher*
nsBaseWidget::GetCompositorVsyncDispatcher()
{
return mCompositorVsyncDispatcher;
}
void nsBaseWidget::CreateCompositor(int aWidth, int aHeight)
{
// This makes sure that gfxPlatforms gets initialized if it hasn't by now.
gfxPlatform::GetPlatform();
MOZ_ASSERT(gfxPlatform::UsesOffMainThreadCompositing(),
"This function assumes OMTC");
// Recreating this is tricky, as we may still have an old and we need
// to make sure it's properly destroyed by calling DestroyCompositor!
// If we've already received a shutdown notification, don't try
// create a new compositor.
if (!mShutdownObserver) {
return;
}
CreateCompositorVsyncDispatcher();
mCompositorParent = NewCompositorParent(aWidth, aHeight);
MessageChannel *parentChannel = mCompositorParent->GetIPCChannel();
nsRefPtr<ClientLayerManager> lm = new ClientLayerManager(this);
MessageLoop *childMessageLoop = CompositorParent::CompositorLoop();
mCompositorChild = new CompositorChild(lm);
mCompositorChild->Open(parentChannel, childMessageLoop, ipc::ChildSide);
if (gfxPrefs::AsyncPanZoomEnabled() &&
(WindowType() == eWindowType_toplevel || WindowType() == eWindowType_child)) {
ConfigureAPZCTreeManager();
}
TextureFactoryIdentifier textureFactoryIdentifier;
PLayerTransactionChild* shadowManager = nullptr;
nsTArray<LayersBackend> backendHints;
GetPreferredCompositorBackends(backendHints);
#if !defined(MOZ_X11) && !defined(XP_WIN)
if (!mRequireOffMainThreadCompositing &&
!Preferences::GetBool("layers.offmainthreadcomposition.force-basic", false)) {
for (size_t i = 0; i < backendHints.Length(); ++i) {
if (backendHints[i] == LayersBackend::LAYERS_BASIC) {
backendHints[i] = LayersBackend::LAYERS_NONE;
}
}
}
#endif
bool success = false;
if (!backendHints.IsEmpty()) {
shadowManager = mCompositorChild->SendPLayerTransactionConstructor(
backendHints, 0, &textureFactoryIdentifier, &success);
}
if (success) {
ShadowLayerForwarder* lf = lm->AsShadowForwarder();
if (!lf) {
lm = nullptr;
mCompositorChild = nullptr;
return;
}
lf->SetShadowManager(shadowManager);
lf->IdentifyTextureHost(textureFactoryIdentifier);
ImageBridgeChild::IdentifyCompositorTextureHost(textureFactoryIdentifier);
WindowUsesOMTC();
mLayerManager = lm.forget();
return;
}
NS_WARNING("Failed to create an OMT compositor.");
DestroyCompositor();
// Compositor child had the only reference to LayerManager and will have
// deallocated it when being freed.
}
bool nsBaseWidget::ShouldUseOffMainThreadCompositing()
{
return gfxPlatform::UsesOffMainThreadCompositing();
}
LayerManager* nsBaseWidget::GetLayerManager(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
if (!mLayerManager) {
mUseLayersAcceleration = ComputeShouldAccelerate(mUseLayersAcceleration);
// Try to use an async compositor first, if possible
if (ShouldUseOffMainThreadCompositing()) {
// e10s uses the parameter to pass in the shadow manager from the TabChild
// so we don't expect to see it there since this doesn't support e10s.
NS_ASSERTION(aShadowManager == nullptr, "Async Compositor not supported with e10s");
CreateCompositor();
}
if (!mLayerManager) {
mLayerManager = CreateBasicLayerManager();
}
}
if (mTemporarilyUseBasicLayerManager && !mBasicLayerManager) {
mBasicLayerManager = CreateBasicLayerManager();
}
LayerManager* usedLayerManager = mTemporarilyUseBasicLayerManager ?
mBasicLayerManager : mLayerManager;
if (aAllowRetaining) {
*aAllowRetaining = (usedLayerManager == mLayerManager);
}
return usedLayerManager;
}
LayerManager* nsBaseWidget::CreateBasicLayerManager()
{
return new BasicLayerManager(this);
}
CompositorChild* nsBaseWidget::GetRemoteRenderer()
{
return mCompositorChild;
}
TemporaryRef<mozilla::gfx::DrawTarget> nsBaseWidget::StartRemoteDrawing()
{
return nullptr;
}
//-------------------------------------------------------------------------
//
// Destroy the window
//
//-------------------------------------------------------------------------
void nsBaseWidget::OnDestroy()
{
if (mTextEventDispatcher) {
mTextEventDispatcher->OnDestroyWidget();
// Don't release it until this widget actually released because after this
// is called, TextEventDispatcher() may create it again.
}
}
NS_METHOD nsBaseWidget::SetWindowClass(const nsAString& xulWinType)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::MoveClient(double aX, double aY)
{
nsIntPoint clientOffset(GetClientOffset());
// GetClientOffset returns device pixels; scale back to display pixels
// if that's what this widget uses for the Move/Resize APIs
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels()
? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
aX -= clientOffset.x * 1.0 / scale.scale;
aY -= clientOffset.y * 1.0 / scale.scale;
return Move(aX, aY);
}
NS_METHOD nsBaseWidget::ResizeClient(double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
nsIntRect clientBounds;
GetClientBounds(clientBounds);
// GetClientBounds and mBounds are device pixels; scale back to display pixels
// if that's what this widget uses for the Move/Resize APIs
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels()
? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
double invScale = 1.0 / scale.scale;
aWidth = mBounds.width * invScale + (aWidth - clientBounds.width * invScale);
aHeight = mBounds.height * invScale + (aHeight - clientBounds.height * invScale);
return Resize(aWidth, aHeight, aRepaint);
}
NS_METHOD nsBaseWidget::ResizeClient(double aX,
double aY,
double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
nsIntRect clientBounds;
GetClientBounds(clientBounds);
double scale = BoundsUseDisplayPixels() ? 1.0 / GetDefaultScale().scale : 1.0;
aWidth = mBounds.width * scale + (aWidth - clientBounds.width * scale);
aHeight = mBounds.height * scale + (aHeight - clientBounds.height * scale);
nsIntPoint clientOffset(GetClientOffset());
aX -= clientOffset.x * scale;
aY -= clientOffset.y * scale;
return Resize(aX, aY, aWidth, aHeight, aRepaint);
}
//-------------------------------------------------------------------------
//
// Bounds
//
//-------------------------------------------------------------------------
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
NS_METHOD nsBaseWidget::GetClientBounds(nsIntRect &aRect)
{
return GetBounds(aRect);
}
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
NS_METHOD nsBaseWidget::GetBounds(nsIntRect &aRect)
{
aRect = mBounds;
return NS_OK;
}
/**
* If the implementation of nsWindow uses a local coordinate system within the window,
* this method must be overridden
*
**/
NS_METHOD nsBaseWidget::GetScreenBounds(nsIntRect &aRect)
{
return GetBounds(aRect);
}
NS_METHOD nsBaseWidget::GetRestoredBounds(nsIntRect &aRect)
{
if (SizeMode() != nsSizeMode_Normal) {
return NS_ERROR_FAILURE;
}
return GetScreenBounds(aRect);
}
nsIntPoint nsBaseWidget::GetClientOffset()
{
return nsIntPoint(0, 0);
}
NS_IMETHODIMP
nsBaseWidget::GetNonClientMargins(nsIntMargin &margins)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::SetNonClientMargins(nsIntMargin &margins)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::EnableDragDrop(bool aEnable)
{
return NS_OK;
}
uint32_t nsBaseWidget::GetMaxTouchPoints() const
{
return 0;
}
NS_METHOD nsBaseWidget::SetModal(bool aModal)
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsBaseWidget::GetAttention(int32_t aCycleCount) {
return NS_OK;
}
bool
nsBaseWidget::HasPendingInputEvent()
{
return false;
}
NS_IMETHODIMP
nsBaseWidget::SetIcon(const nsAString&)
{
return NS_OK;
}
NS_IMETHODIMP
nsBaseWidget::SetWindowTitlebarColor(nscolor aColor, bool aActive)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
bool
nsBaseWidget::ShowsResizeIndicator(nsIntRect* aResizerRect)
{
return false;
}
NS_IMETHODIMP
nsBaseWidget::SetLayersAcceleration(bool aEnabled)
{
if (mUseLayersAcceleration == aEnabled) {
return NS_OK;
}
bool usedAcceleration = mUseLayersAcceleration;
mUseLayersAcceleration = ComputeShouldAccelerate(aEnabled);
// ComputeShouldAccelerate may have set mUseLayersAcceleration to a value
// different from aEnabled.
if (usedAcceleration == mUseLayersAcceleration) {
return NS_OK;
}
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
return NS_OK;
}
NS_METHOD nsBaseWidget::RegisterTouchWindow()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_METHOD nsBaseWidget::UnregisterTouchWindow()
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::OverrideSystemMouseScrollSpeed(double aOriginalDeltaX,
double aOriginalDeltaY,
double& aOverriddenDeltaX,
double& aOverriddenDeltaY)
{
aOverriddenDeltaX = aOriginalDeltaX;
aOverriddenDeltaY = aOriginalDeltaY;
static bool sInitialized = false;
static bool sIsOverrideEnabled = false;
static int32_t sIntFactorX = 0;
static int32_t sIntFactorY = 0;
if (!sInitialized) {
Preferences::AddBoolVarCache(&sIsOverrideEnabled,
"mousewheel.system_scroll_override_on_root_content.enabled", false);
Preferences::AddIntVarCache(&sIntFactorX,
"mousewheel.system_scroll_override_on_root_content.horizontal.factor", 0);
Preferences::AddIntVarCache(&sIntFactorY,
"mousewheel.system_scroll_override_on_root_content.vertical.factor", 0);
sIntFactorX = std::max(sIntFactorX, 0);
sIntFactorY = std::max(sIntFactorY, 0);
sInitialized = true;
}
if (!sIsOverrideEnabled) {
return NS_OK;
}
// The pref value must be larger than 100, otherwise, we don't override the
// delta value.
if (sIntFactorX > 100) {
double factor = static_cast<double>(sIntFactorX) / 100;
aOverriddenDeltaX *= factor;
}
if (sIntFactorY > 100) {
double factor = static_cast<double>(sIntFactorY) / 100;
aOverriddenDeltaY *= factor;
}
return NS_OK;
}
/**
* Modifies aFile to point at an icon file with the given name and suffix. The
* suffix may correspond to a file extension with leading '.' if appropriate.
* Returns true if the icon file exists and can be read.
*/
static bool
ResolveIconNameHelper(nsIFile *aFile,
const nsAString &aIconName,
const nsAString &aIconSuffix)
{
aFile->Append(NS_LITERAL_STRING("icons"));
aFile->Append(NS_LITERAL_STRING("default"));
aFile->Append(aIconName + aIconSuffix);
bool readable;
return NS_SUCCEEDED(aFile->IsReadable(&readable)) && readable;
}
/**
* Resolve the given icon name into a local file object. This method is
* intended to be called by subclasses of nsBaseWidget. aIconSuffix is a
* platform specific icon file suffix (e.g., ".ico" under Win32).
*
* If no file is found matching the given parameters, then null is returned.
*/
void
nsBaseWidget::ResolveIconName(const nsAString &aIconName,
const nsAString &aIconSuffix,
nsIFile **aResult)
{
*aResult = nullptr;
nsCOMPtr<nsIProperties> dirSvc = do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
if (!dirSvc)
return;
// first check auxilary chrome directories
nsCOMPtr<nsISimpleEnumerator> dirs;
dirSvc->Get(NS_APP_CHROME_DIR_LIST, NS_GET_IID(nsISimpleEnumerator),
getter_AddRefs(dirs));
if (dirs) {
bool hasMore;
while (NS_SUCCEEDED(dirs->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> element;
dirs->GetNext(getter_AddRefs(element));
if (!element)
continue;
nsCOMPtr<nsIFile> file = do_QueryInterface(element);
if (!file)
continue;
if (ResolveIconNameHelper(file, aIconName, aIconSuffix)) {
NS_ADDREF(*aResult = file);
return;
}
}
}
// then check the main app chrome directory
nsCOMPtr<nsIFile> file;
dirSvc->Get(NS_APP_CHROME_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(file));
if (file && ResolveIconNameHelper(file, aIconName, aIconSuffix))
NS_ADDREF(*aResult = file);
}
NS_IMETHODIMP
nsBaseWidget::BeginResizeDrag(WidgetGUIEvent* aEvent,
int32_t aHorizontal,
int32_t aVertical)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::BeginMoveDrag(WidgetMouseEvent* aEvent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
uint32_t
nsBaseWidget::GetGLFrameBufferFormat()
{
return LOCAL_GL_RGBA;
}
void nsBaseWidget::SetSizeConstraints(const SizeConstraints& aConstraints)
{
mSizeConstraints = aConstraints;
// We can't ensure that the size is honored at this point because we're
// probably in the middle of a reflow.
}
const widget::SizeConstraints& nsBaseWidget::GetSizeConstraints() const
{
return mSizeConstraints;
}
// static
nsIRollupListener*
nsBaseWidget::GetActiveRollupListener()
{
// If set, then this is likely an <html:select> dropdown.
if (gRollupListener)
return gRollupListener;
return nsXULPopupManager::GetInstance();
}
void
nsBaseWidget::NotifyWindowDestroyed()
{
if (!mWidgetListener)
return;
nsCOMPtr<nsIXULWindow> window = mWidgetListener->GetXULWindow();
nsCOMPtr<nsIBaseWindow> xulWindow(do_QueryInterface(window));
if (xulWindow) {
xulWindow->Destroy();
}
}
void
nsBaseWidget::NotifySizeMoveDone()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->WindowSizeMoveDone();
}
}
void
nsBaseWidget::NotifyWindowMoved(int32_t aX, int32_t aY)
{
if (mWidgetListener) {
mWidgetListener->WindowMoved(this, aX, aY);
}
if (GetIMEUpdatePreference().WantPositionChanged()) {
NotifyIME(IMENotification(IMEMessage::NOTIFY_IME_OF_POSITION_CHANGE));
}
}
void
nsBaseWidget::NotifySysColorChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->SysColorChanged();
}
}
void
nsBaseWidget::NotifyThemeChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->ThemeChanged();
}
}
void
nsBaseWidget::NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
UIStateChangeType aShowFocusRings)
{
if (nsIDocument* doc = GetDocument()) {
nsPIDOMWindow* win = doc->GetWindow();
if (win) {
win->SetKeyboardIndicators(aShowAccelerators, aShowFocusRings);
}
}
}
NS_IMETHODIMP
nsBaseWidget::NotifyIME(const IMENotification& aIMENotification)
{
switch (aIMENotification.mMessage) {
case REQUEST_TO_COMMIT_COMPOSITION:
case REQUEST_TO_CANCEL_COMPOSITION:
// Currently, if native IME handler doesn't use TextEventDispatcher,
// the request may be notified to mTextEventDispatcher or native IME
// directly. Therefore, if mTextEventDispatcher has a composition,
// the request should be handled by the mTextEventDispatcher.
if (mTextEventDispatcher && mTextEventDispatcher->IsComposing()) {
return mTextEventDispatcher->NotifyIME(aIMENotification);
}
// Otherwise, it should be handled by native IME.
return NotifyIMEInternal(aIMENotification);
case NOTIFY_IME_OF_FOCUS:
case NOTIFY_IME_OF_BLUR:
// If the notification is a notification which is supported by
// nsITextInputProcessorCallback, we should notify the
// TextEventDispatcher, first. After that, notify native IME too.
if (mTextEventDispatcher) {
mTextEventDispatcher->NotifyIME(aIMENotification);
}
return NotifyIMEInternal(aIMENotification);
default:
// Otherwise, notify only native IME for now.
return NotifyIMEInternal(aIMENotification);
}
}
NS_IMETHODIMP_(nsIWidget::TextEventDispatcher*)
nsBaseWidget::GetTextEventDispatcher()
{
if (!mTextEventDispatcher) {
mTextEventDispatcher = new TextEventDispatcher(this);
}
return mTextEventDispatcher;
}
#ifdef ACCESSIBILITY
a11y::Accessible*
nsBaseWidget::GetRootAccessible()
{
NS_ENSURE_TRUE(mWidgetListener, nullptr);
nsIPresShell* presShell = mWidgetListener->GetPresShell();
NS_ENSURE_TRUE(presShell, nullptr);
// If container is null then the presshell is not active. This often happens
// when a preshell is being held onto for fastback.
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE(presContext->GetContainerWeak(), nullptr);
// Accessible creation might be not safe so use IsSafeToRunScript to
// make sure it's not created at unsafe times.
nsCOMPtr<nsIAccessibilityService> accService =
services::GetAccessibilityService();
if (accService) {
return accService->GetRootDocumentAccessible(presShell, nsContentUtils::IsSafeToRunScript());
}
return nullptr;
}
#endif // ACCESSIBILITY
nsresult
nsIWidget::SynthesizeNativeTouchTap(nsIntPoint aPointerScreenPoint, bool aLongTap)
{
if (sPointerIdCounter > TOUCH_INJECT_MAX_POINTS) {
sPointerIdCounter = 0;
}
int pointerId = sPointerIdCounter;
sPointerIdCounter++;
nsresult rv = SynthesizeNativeTouchPoint(pointerId, TOUCH_CONTACT,
aPointerScreenPoint, 1.0, 90);
if (NS_FAILED(rv)) {
return rv;
}
if (!aLongTap) {
nsresult rv = SynthesizeNativeTouchPoint(pointerId, TOUCH_REMOVE,
aPointerScreenPoint, 0, 0);
return rv;
}
// initiate a long tap
int elapse = Preferences::GetInt("ui.click_hold_context_menus.delay",
TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC);
if (!mLongTapTimer) {
mLongTapTimer = do_CreateInstance(NS_TIMER_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
SynthesizeNativeTouchPoint(pointerId, TOUCH_CANCEL,
aPointerScreenPoint, 0, 0);
return NS_ERROR_UNEXPECTED;
}
// Windows requires recuring events, so we set this to a smaller window
// than the pref value.
int timeout = elapse;
if (timeout > TOUCH_INJECT_PUMP_TIMER_MSEC) {
timeout = TOUCH_INJECT_PUMP_TIMER_MSEC;
}
mLongTapTimer->InitWithFuncCallback(OnLongTapTimerCallback, this,
timeout,
nsITimer::TYPE_REPEATING_SLACK);
}
// If we already have a long tap pending, cancel it. We only allow one long
// tap to be active at a time.
if (mLongTapTouchPoint) {
SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
mLongTapTouchPoint->mPosition, 0, 0);
}
mLongTapTouchPoint = new LongTapInfo(pointerId, aPointerScreenPoint,
TimeDuration::FromMilliseconds(elapse));
return NS_OK;
}
// static
void
nsIWidget::OnLongTapTimerCallback(nsITimer* aTimer, void* aClosure)
{
nsIWidget *self = static_cast<nsIWidget *>(aClosure);
if ((self->mLongTapTouchPoint->mStamp + self->mLongTapTouchPoint->mDuration) >
TimeStamp::Now()) {
#ifdef XP_WIN
// Windows needs us to keep pumping feedback to the digitizer, so update
// the pointer id with the same position.
self->SynthesizeNativeTouchPoint(self->mLongTapTouchPoint->mPointerId,
TOUCH_CONTACT,
self->mLongTapTouchPoint->mPosition,
1.0, 90);
#endif
return;
}
// finished, remove the touch point
self->mLongTapTimer->Cancel();
self->mLongTapTimer = nullptr;
self->SynthesizeNativeTouchPoint(self->mLongTapTouchPoint->mPointerId,
TOUCH_REMOVE,
self->mLongTapTouchPoint->mPosition,
0, 0);
self->mLongTapTouchPoint = nullptr;
}
nsresult
nsIWidget::ClearNativeTouchSequence()
{
if (!mLongTapTimer) {
return NS_OK;
}
mLongTapTimer->Cancel();
mLongTapTimer = nullptr;
SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
mLongTapTouchPoint->mPosition, 0, 0);
mLongTapTouchPoint = nullptr;
return NS_OK;
}
void
nsBaseWidget::RegisterPluginWindowForRemoteUpdates()
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::RegisterPluginWindowForRemoteUpdates not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
if (!id) {
NS_WARNING("This is not a valid native widget!");
return;
}
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->Put(id, this);
#endif
}
void
nsBaseWidget::UnregisterPluginWindowForRemoteUpdates()
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::UnregisterPluginWindowForRemoteUpdates not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
if (!id) {
NS_WARNING("This is not a valid native widget!");
return;
}
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->Remove(id);
#endif
}
// static
nsIWidget*
nsIWidget::LookupRegisteredPluginWindow(uintptr_t aWindowID)
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::LookupRegisteredPluginWindow not implemented!");
return nullptr;
#else
MOZ_ASSERT(NS_IsMainThread());
nsIWidget* widget = nullptr;
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->Get((void*)aWindowID, &widget);
return widget;
#endif
}
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
static PLDHashOperator
RegisteredPluginEnumerator(const void* aWindowId, nsIWidget* aWidget, void* aUserArg)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindowId);
MOZ_ASSERT(aWidget);
MOZ_ASSERT(aUserArg);
const nsTArray<uintptr_t>* visible = static_cast<const nsTArray<uintptr_t>*>(aUserArg);
if (!visible->Contains((uintptr_t)aWindowId) && !aWidget->Destroyed()) {
aWidget->Show(false);
}
return PLDHashOperator::PL_DHASH_NEXT;
}
#endif
// static
void
nsIWidget::UpdateRegisteredPluginWindowVisibility(nsTArray<uintptr_t>& aVisibleList)
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::UpdateRegisteredPluginWindowVisibility not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->EnumerateRead(RegisteredPluginEnumerator, static_cast<void*>(&aVisibleList));
#endif
}
#ifdef DEBUG
//////////////////////////////////////////////////////////////
//
// Convert a GUI event message code to a string.
// Makes it a lot easier to debug events.
//
// See gtk/nsWidget.cpp and windows/nsWindow.cpp
// for a DebugPrintEvent() function that uses
// this.
//
//////////////////////////////////////////////////////////////
/* static */ nsAutoString
nsBaseWidget::debug_GuiEventToString(WidgetGUIEvent* aGuiEvent)
{
NS_ASSERTION(nullptr != aGuiEvent,"cmon, null gui event.");
nsAutoString eventName(NS_LITERAL_STRING("UNKNOWN"));
#define _ASSIGN_eventName(_value,_name)\
case _value: eventName.AssignLiteral(_name) ; break
switch(aGuiEvent->message)
{
_ASSIGN_eventName(NS_BLUR_CONTENT,"NS_BLUR_CONTENT");
_ASSIGN_eventName(NS_DRAGDROP_GESTURE,"NS_DND_GESTURE");
_ASSIGN_eventName(NS_DRAGDROP_DROP,"NS_DND_DROP");
_ASSIGN_eventName(NS_DRAGDROP_ENTER,"NS_DND_ENTER");
_ASSIGN_eventName(NS_DRAGDROP_EXIT,"NS_DND_EXIT");
_ASSIGN_eventName(NS_DRAGDROP_OVER,"NS_DND_OVER");
_ASSIGN_eventName(NS_EDITOR_INPUT,"NS_EDITOR_INPUT");
_ASSIGN_eventName(NS_FOCUS_CONTENT,"NS_FOCUS_CONTENT");
_ASSIGN_eventName(NS_FORM_SELECTED,"NS_FORM_SELECTED");
_ASSIGN_eventName(NS_FORM_CHANGE,"NS_FORM_CHANGE");
_ASSIGN_eventName(NS_FORM_RESET,"NS_FORM_RESET");
_ASSIGN_eventName(NS_FORM_SUBMIT,"NS_FORM_SUBMIT");
_ASSIGN_eventName(NS_IMAGE_ABORT,"NS_IMAGE_ABORT");
_ASSIGN_eventName(NS_LOAD_ERROR,"NS_LOAD_ERROR");
_ASSIGN_eventName(NS_KEY_DOWN,"NS_KEY_DOWN");
_ASSIGN_eventName(NS_KEY_PRESS,"NS_KEY_PRESS");
_ASSIGN_eventName(NS_KEY_UP,"NS_KEY_UP");
_ASSIGN_eventName(NS_MOUSE_ENTER,"NS_MOUSE_ENTER");
_ASSIGN_eventName(NS_MOUSE_EXIT,"NS_MOUSE_EXIT");
_ASSIGN_eventName(NS_MOUSE_BUTTON_DOWN,"NS_MOUSE_BUTTON_DOWN");
_ASSIGN_eventName(NS_MOUSE_BUTTON_UP,"NS_MOUSE_BUTTON_UP");
_ASSIGN_eventName(NS_MOUSE_CLICK,"NS_MOUSE_CLICK");
_ASSIGN_eventName(NS_MOUSE_DOUBLECLICK,"NS_MOUSE_DBLCLICK");
_ASSIGN_eventName(NS_MOUSE_MOVE,"NS_MOUSE_MOVE");
_ASSIGN_eventName(NS_LOAD,"NS_LOAD");
_ASSIGN_eventName(NS_POPSTATE,"NS_POPSTATE");
_ASSIGN_eventName(NS_BEFORE_SCRIPT_EXECUTE,"NS_BEFORE_SCRIPT_EXECUTE");
_ASSIGN_eventName(NS_AFTER_SCRIPT_EXECUTE,"NS_AFTER_SCRIPT_EXECUTE");
_ASSIGN_eventName(NS_PAGE_UNLOAD,"NS_PAGE_UNLOAD");
_ASSIGN_eventName(NS_HASHCHANGE,"NS_HASHCHANGE");
_ASSIGN_eventName(NS_READYSTATECHANGE,"NS_READYSTATECHANGE");
_ASSIGN_eventName(NS_XUL_BROADCAST, "NS_XUL_BROADCAST");
_ASSIGN_eventName(NS_XUL_COMMAND_UPDATE, "NS_XUL_COMMAND_UPDATE");
#undef _ASSIGN_eventName
default:
{
char buf[32];
sprintf(buf,"UNKNOWN: %d",aGuiEvent->message);
CopyASCIItoUTF16(buf, eventName);
}
break;
}
return nsAutoString(eventName);
}
//////////////////////////////////////////////////////////////
//
// Code to deal with paint and event debug prefs.
//
//////////////////////////////////////////////////////////////
struct PrefPair
{
const char * name;
bool value;
};
static PrefPair debug_PrefValues[] =
{
{ "nglayout.debug.crossing_event_dumping", false },
{ "nglayout.debug.event_dumping", false },
{ "nglayout.debug.invalidate_dumping", false },
{ "nglayout.debug.motion_event_dumping", false },
{ "nglayout.debug.paint_dumping", false },
{ "nglayout.debug.paint_flashing", false }
};
//////////////////////////////////////////////////////////////
bool
nsBaseWidget::debug_GetCachedBoolPref(const char * aPrefName)
{
NS_ASSERTION(nullptr != aPrefName,"cmon, pref name is null.");
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++)
{
if (strcmp(debug_PrefValues[i].name, aPrefName) == 0)
{
return debug_PrefValues[i].value;
}
}
return false;
}
//////////////////////////////////////////////////////////////
static void debug_SetCachedBoolPref(const char * aPrefName,bool aValue)
{
NS_ASSERTION(nullptr != aPrefName,"cmon, pref name is null.");
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++)
{
if (strcmp(debug_PrefValues[i].name, aPrefName) == 0)
{
debug_PrefValues[i].value = aValue;
return;
}
}
NS_ASSERTION(false, "cmon, this code is not reached dude.");
}
//////////////////////////////////////////////////////////////
class Debug_PrefObserver MOZ_FINAL : public nsIObserver {
~Debug_PrefObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
};
NS_IMPL_ISUPPORTS(Debug_PrefObserver, nsIObserver)
NS_IMETHODIMP
Debug_PrefObserver::Observe(nsISupports* subject, const char* topic,
const char16_t* data)
{
NS_ConvertUTF16toUTF8 prefName(data);
bool value = Preferences::GetBool(prefName.get(), false);
debug_SetCachedBoolPref(prefName.get(), value);
return NS_OK;
}
//////////////////////////////////////////////////////////////
/* static */ void
debug_RegisterPrefCallbacks()
{
static bool once = true;
if (!once) {
return;
}
once = false;
nsCOMPtr<nsIObserver> obs(new Debug_PrefObserver());
for (uint32_t i = 0; i < ArrayLength(debug_PrefValues); i++) {
// Initialize the pref values
debug_PrefValues[i].value =
Preferences::GetBool(debug_PrefValues[i].name, false);
if (obs) {
// Register callbacks for when these change
Preferences::AddStrongObserver(obs, debug_PrefValues[i].name);
}
}
}
//////////////////////////////////////////////////////////////
static int32_t
_GetPrintCount()
{
static int32_t sCount = 0;
return ++sCount;
}
//////////////////////////////////////////////////////////////
/* static */ bool
nsBaseWidget::debug_WantPaintFlashing()
{
return debug_GetCachedBoolPref("nglayout.debug.paint_flashing");
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpEvent(FILE * aFileOut,
nsIWidget * aWidget,
WidgetGUIEvent* aGuiEvent,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
if (aGuiEvent->message == NS_MOUSE_MOVE)
{
if (!debug_GetCachedBoolPref("nglayout.debug.motion_event_dumping"))
return;
}
if (aGuiEvent->message == NS_MOUSE_ENTER ||
aGuiEvent->message == NS_MOUSE_EXIT)
{
if (!debug_GetCachedBoolPref("nglayout.debug.crossing_event_dumping"))
return;
}
if (!debug_GetCachedBoolPref("nglayout.debug.event_dumping"))
return;
NS_LossyConvertUTF16toASCII tempString(debug_GuiEventToString(aGuiEvent).get());
fprintf(aFileOut,
"%4d %-26s widget=%-8p name=%-12s id=0x%-6x refpt=%d,%d\n",
_GetPrintCount(),
tempString.get(),
(void *) aWidget,
aWidgetName.get(),
aWindowID,
aGuiEvent->refPoint.x,
aGuiEvent->refPoint.y);
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpPaintEvent(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRegion & aRegion,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
NS_ASSERTION(nullptr != aFileOut,"cmon, null output FILE");
NS_ASSERTION(nullptr != aWidget,"cmon, the widget is null");
if (!debug_GetCachedBoolPref("nglayout.debug.paint_dumping"))
return;
nsIntRect rect = aRegion.GetBounds();
fprintf(aFileOut,
"%4d PAINT widget=%p name=%-12s id=0x%-6x bounds-rect=%3d,%-3d %3d,%-3d",
_GetPrintCount(),
(void *) aWidget,
aWidgetName.get(),
aWindowID,
rect.x, rect.y, rect.width, rect.height
);
fprintf(aFileOut,"\n");
}
//////////////////////////////////////////////////////////////
/* static */ void
nsBaseWidget::debug_DumpInvalidate(FILE * aFileOut,
nsIWidget * aWidget,
const nsIntRect * aRect,
const nsAutoCString & aWidgetName,
int32_t aWindowID)
{
if (!debug_GetCachedBoolPref("nglayout.debug.invalidate_dumping"))
return;
NS_ASSERTION(nullptr != aFileOut,"cmon, null output FILE");
NS_ASSERTION(nullptr != aWidget,"cmon, the widget is null");
fprintf(aFileOut,
"%4d Invalidate widget=%p name=%-12s id=0x%-6x",
_GetPrintCount(),
(void *) aWidget,
aWidgetName.get(),
aWindowID);
if (aRect)
{
fprintf(aFileOut,
" rect=%3d,%-3d %3d,%-3d",
aRect->x,
aRect->y,
aRect->width,
aRect->height);
}
else
{
fprintf(aFileOut,
" rect=%-15s",
"none");
}
fprintf(aFileOut,"\n");
}
//////////////////////////////////////////////////////////////
#endif // DEBUG
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