bool
ContentCacheInParent::GetTextRect(uint32_t aOffset,
LayoutDeviceIntRect& aTextRect) const
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("ContentCacheInParent: 0x%p GetTextRect(aOffset=%u), "
"mTextRectArray={ mStart=%u, mRects.Length()=%u }, "
"mSelection={ mAnchor=%u, mFocus=%u }",
this, aOffset, mTextRectArray.mStart, mTextRectArray.mRects.Length(),
mSelection.mAnchor, mSelection.mFocus));
if (!aOffset) {
NS_WARN_IF(mFirstCharRect.IsEmpty());
aTextRect = mFirstCharRect;
return !aTextRect.IsEmpty();
}
if (aOffset == mSelection.mAnchor) {
NS_WARN_IF(mSelection.mAnchorCharRect.IsEmpty());
aTextRect = mSelection.mAnchorCharRect;
return !aTextRect.IsEmpty();
}
if (aOffset == mSelection.mFocus) {
NS_WARN_IF(mSelection.mFocusCharRect.IsEmpty());
aTextRect = mSelection.mFocusCharRect;
return !aTextRect.IsEmpty();
}
if (!mTextRectArray.InRange(aOffset)) {
aTextRect.SetEmpty();
return false;
}
aTextRect = mTextRectArray.GetRect(aOffset);
return true;
}
already_AddRefed<gfx::DrawTarget>
CompositorWidgetProxy::CreateBackBufferDrawTarget(gfx::DrawTarget* aScreenTarget,
const LayoutDeviceIntRect& aRect,
const LayoutDeviceIntRect& aClearRect)
{
MOZ_ASSERT(aScreenTarget);
gfx::SurfaceFormat format = gfx::SurfaceFormat::B8G8R8A8;
gfx::IntSize size = aRect.ToUnknownRect().Size();
gfx::IntSize clientSize(GetClientSize().ToUnknownSize());
RefPtr<gfx::DrawTarget> target;
// Re-use back buffer if possible
if (mLastBackBuffer &&
mLastBackBuffer->GetBackendType() == aScreenTarget->GetBackendType() &&
mLastBackBuffer->GetFormat() == format &&
size <= mLastBackBuffer->GetSize() &&
mLastBackBuffer->GetSize() <= clientSize) {
target = mLastBackBuffer;
target->SetTransform(gfx::Matrix());
if (!aClearRect.IsEmpty()) {
gfx::IntRect clearRect = aClearRect.ToUnknownRect() - aRect.ToUnknownRect().TopLeft();
target->ClearRect(gfx::Rect(clearRect.x, clearRect.y, clearRect.width, clearRect.height));
}
} else {
target = aScreenTarget->CreateSimilarDrawTarget(size, format);
mLastBackBuffer = target;
}
return target.forget();
}
void nsView::DoResetWidgetBounds(bool aMoveOnly,
bool aInvalidateChangedSize) {
// The geometry of a root view's widget is controlled externally,
// NOT by sizing or positioning the view
if (mViewManager->GetRootView() == this) {
return;
}
NS_PRECONDITION(mWindow, "Why was this called??");
// Hold this ref to make sure it stays alive.
nsCOMPtr<nsIWidget> widget = mWindow;
// Stash a copy of these and use them so we can handle this being deleted (say
// from sync painting/flushing from Show/Move/Resize on the widget).
LayoutDeviceIntRect newBounds;
RefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
nsWindowType type = widget->WindowType();
LayoutDeviceIntRect curBounds;
widget->GetClientBounds(curBounds);
bool invisiblePopup = type == eWindowType_popup &&
((curBounds.IsEmpty() && mDimBounds.IsEmpty()) ||
mVis == nsViewVisibility_kHide);
if (invisiblePopup) {
// We're going to hit the early exit below, avoid calling CalcWidgetBounds.
} else {
newBounds = LayoutDeviceIntRect::FromUnknownRect(CalcWidgetBounds(type));
}
bool curVisibility = widget->IsVisible();
bool newVisibility = IsEffectivelyVisible();
if (curVisibility && !newVisibility) {
widget->Show(false);
}
if (invisiblePopup) {
// Don't manipulate empty or hidden popup widgets. For example there's no
// point moving hidden comboboxes around, or doing X server roundtrips
// to compute their true screen position. This could mean that WidgetToScreen
// operations on these widgets don't return up-to-date values, but popup
// positions aren't reliable anyway because of correction to be on or off-screen.
return;
}
bool changedPos = curBounds.TopLeft() != newBounds.TopLeft();
bool changedSize = curBounds.Size() != newBounds.Size();
// Child views are never attached to top level widgets, this is safe.
// Coordinates are converted to display pixels for window Move/Resize APIs,
// because of the potential for device-pixel coordinate spaces for mixed
// hidpi/lodpi screens to overlap each other and result in bad placement
// (bug 814434).
double invScale;
// Bug 861270: for correct widget manipulation at arbitrary scale factors,
// prefer to base scaling on widget->GetDefaultScale(). But only do this if
// it matches the view manager's device context scale after allowing for the
// quantization to app units, because of OS X multiscreen issues (where the
// only two scales are 1.0 or 2.0, and so the quantization doesn't actually
// cause problems anyhow).
// In the case of a mismatch, fall back to scaling based on the dev context's
// AppUnitsPerDevPixelAtUnitFullZoom value. On platforms where the device-pixel
// scale is uniform across all displays (currently all except OS X), we'll
// always use the precise value from mWindow->GetDefaultScale here.
CSSToLayoutDeviceScale scale = widget->GetDefaultScale();
if (NSToIntRound(60.0 / scale.scale) == dx->AppUnitsPerDevPixelAtUnitFullZoom()) {
invScale = 1.0 / scale.scale;
} else {
invScale = dx->AppUnitsPerDevPixelAtUnitFullZoom() / 60.0;
}
if (changedPos) {
if (changedSize && !aMoveOnly) {
widget->ResizeClient(newBounds.x * invScale,
newBounds.y * invScale,
newBounds.width * invScale,
newBounds.height * invScale,
aInvalidateChangedSize);
} else {
widget->MoveClient(newBounds.x * invScale,
newBounds.y * invScale);
}
} else {
if (changedSize && !aMoveOnly) {
widget->ResizeClient(newBounds.width * invScale,
newBounds.height * invScale,
aInvalidateChangedSize);
} // else do nothing!
}
if (!curVisibility && newVisibility) {
widget->Show(true);
}
}
void nsView::DoResetWidgetBounds(bool aMoveOnly,
bool aInvalidateChangedSize) {
// The geometry of a root view's widget is controlled externally,
// NOT by sizing or positioning the view
if (mViewManager->GetRootView() == this) {
return;
}
NS_PRECONDITION(mWindow, "Why was this called??");
// Hold this ref to make sure it stays alive.
nsCOMPtr<nsIWidget> widget = mWindow;
// Stash a copy of these and use them so we can handle this being deleted (say
// from sync painting/flushing from Show/Move/Resize on the widget).
LayoutDeviceIntRect newBounds;
RefPtr<nsDeviceContext> dx = mViewManager->GetDeviceContext();
nsWindowType type = widget->WindowType();
LayoutDeviceIntRect curBounds;
widget->GetClientBounds(curBounds);
bool invisiblePopup = type == eWindowType_popup &&
((curBounds.IsEmpty() && mDimBounds.IsEmpty()) ||
mVis == nsViewVisibility_kHide);
if (invisiblePopup) {
// We're going to hit the early exit below, avoid calling CalcWidgetBounds.
} else {
newBounds = CalcWidgetBounds(type);
}
bool curVisibility = widget->IsVisible();
bool newVisibility = IsEffectivelyVisible();
if (curVisibility && !newVisibility) {
widget->Show(false);
}
if (invisiblePopup) {
// Don't manipulate empty or hidden popup widgets. For example there's no
// point moving hidden comboboxes around, or doing X server roundtrips
// to compute their true screen position. This could mean that WidgetToScreen
// operations on these widgets don't return up-to-date values, but popup
// positions aren't reliable anyway because of correction to be on or off-screen.
return;
}
bool changedPos = curBounds.TopLeft() != newBounds.TopLeft();
bool changedSize = curBounds.Size() != newBounds.Size();
// Child views are never attached to top level widgets, this is safe.
// Coordinates are converted to desktop pixels for window Move/Resize APIs,
// because of the potential for device-pixel coordinate spaces for mixed
// hidpi/lodpi screens to overlap each other and result in bad placement
// (bug 814434).
DesktopToLayoutDeviceScale scale = widget->GetDesktopToDeviceScale();
#ifdef XP_MACOSX
// On OS X, this can be called before Cocoa has updated the backing scale
// factor of our widget, in which case |scale| is wrong here. To work
// around this, we check the device context and override |scale| if it
// doesn't match. (This happens when a popup window that has previously
// been created and hidden is being moved between hi- and lo-dpi screens,
// but is not currently visible; Cocoa doesn't notify it of the scale
// factor change until it gets shown on the new screen, which is too late
// for us because we'll have already done the computations involving scale
// here to move/size it.)
// It might be better to avoid this by keeping calculations such as
// CalcWidgetBounds entirely in appUnits, rather than using device pixels,
// but that seems like a more extensive and potentially risky change.
int32_t appPerDev = dx->AppUnitsPerDevPixelAtUnitFullZoom();
if (NSToIntRound(60.0 / scale.scale) != appPerDev) {
scale = DesktopToLayoutDeviceScale(60.0 / appPerDev);
}
#endif
DesktopRect deskRect = newBounds / scale;
if (changedPos) {
if (changedSize && !aMoveOnly) {
widget->ResizeClient(deskRect.x, deskRect.y,
deskRect.width, deskRect.height,
aInvalidateChangedSize);
} else {
widget->MoveClient(deskRect.x, deskRect.y);
}
} else {
if (changedSize && !aMoveOnly) {
widget->ResizeClient(deskRect.width, deskRect.height,
aInvalidateChangedSize);
} // else do nothing!
}
if (!curVisibility && newVisibility) {
widget->Show(true);
}
}
bool
ContentCacheInParent::GetUnionTextRects(
uint32_t aOffset,
uint32_t aLength,
LayoutDeviceIntRect& aUnionTextRect) const
{
MOZ_LOG(sContentCacheLog, LogLevel::Info,
("ContentCacheInParent: 0x%p GetUnionTextRects(aOffset=%u, "
"aLength=%u), mTextRectArray={ mStart=%u, mRects.Length()=%u }, "
"mSelection={ mAnchor=%u, mFocus=%u }",
this, aOffset, aLength, mTextRectArray.mStart,
mTextRectArray.mRects.Length(), mSelection.mAnchor, mSelection.mFocus));
CheckedInt<uint32_t> endOffset =
CheckedInt<uint32_t>(aOffset) + aLength;
if (!endOffset.isValid()) {
return false;
}
if (!mSelection.Collapsed() &&
aOffset == mSelection.StartOffset() && aLength == mSelection.Length()) {
NS_WARN_IF(mSelection.mRect.IsEmpty());
aUnionTextRect = mSelection.mRect;
return !aUnionTextRect.IsEmpty();
}
if (aLength == 1) {
if (!aOffset) {
NS_WARN_IF(mFirstCharRect.IsEmpty());
aUnionTextRect = mFirstCharRect;
return !aUnionTextRect.IsEmpty();
}
if (aOffset == mSelection.mAnchor) {
NS_WARN_IF(mSelection.mAnchorCharRect.IsEmpty());
aUnionTextRect = mSelection.mAnchorCharRect;
return !aUnionTextRect.IsEmpty();
}
if (aOffset == mSelection.mFocus) {
NS_WARN_IF(mSelection.mFocusCharRect.IsEmpty());
aUnionTextRect = mSelection.mFocusCharRect;
return !aUnionTextRect.IsEmpty();
}
}
// Even if some text rects are not cached of the queried range,
// we should return union rect when the first character's rect is cached
// since the first character rect is important and the others are not so
// in most cases.
if (!aOffset && aOffset != mSelection.mAnchor &&
aOffset != mSelection.mFocus && !mTextRectArray.InRange(aOffset)) {
// The first character rect isn't cached.
return false;
}
if (mTextRectArray.IsOverlappingWith(aOffset, aLength)) {
aUnionTextRect =
mTextRectArray.GetUnionRectAsFarAsPossible(aOffset, aLength);
} else {
aUnionTextRect.SetEmpty();
}
if (!aOffset) {
aUnionTextRect = aUnionTextRect.Union(mFirstCharRect);
}
if (aOffset <= mSelection.mAnchor && mSelection.mAnchor < endOffset.value()) {
aUnionTextRect = aUnionTextRect.Union(mSelection.mAnchorCharRect);
}
if (aOffset <= mSelection.mFocus && mSelection.mFocus < endOffset.value()) {
aUnionTextRect = aUnionTextRect.Union(mSelection.mFocusCharRect);
}
return !aUnionTextRect.IsEmpty();
}
