Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 249 insertions, 0 deletions

diff --git a/layout/base/PresShellForwards.h b/layout/base/PresShellForwards.h
new file mode 100644
index 0000000000..0b9d802ed1
--- /dev/null
+++ b/layout/base/PresShellForwards.h
@@ -0,0 +1,249 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 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/. */
+
+#ifndef mozilla_PresShellForwards_h
+#define mozilla_PresShellForwards_h
+
+#include "mozilla/TypedEnumBits.h"
+
+struct CapturingContentInfo;
+
+namespace mozilla {
+
+class PresShell;
+
+// Flags to pass to PresShell::SetCapturingContent().
+enum class CaptureFlags {
+  None = 0,
+  // When assigning capture, ignore whether capture is allowed or not.
+  IgnoreAllowedState = 1 << 0,
+  // Set if events should be targeted at the capturing content or its children.
+  RetargetToElement = 1 << 1,
+  // Set if the current capture wants drags to be prevented.
+  PreventDragStart = 1 << 2,
+  // Set when the mouse is pointer locked, and events are sent to locked
+  // element.
+  PointerLock = 1 << 3,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(CaptureFlags)
+
+enum class ResizeReflowOptions : uint32_t {
+  NoOption = 0,
+  // the resulting BSize can be less than the given one, producing
+  // shrink-to-fit sizing in the block dimension
+  BSizeLimit = 1 << 0,
+  // Invalidate layout, but don't reflow.
+  //
+  // TODO(emilio): Ideally this should just become the default, or we should
+  // unconditionally not reflow and rely on the caller to do so, having a
+  // separate API for shrink-to-fit.
+  SuppressReflow = 1 << 1,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ResizeReflowOptions)
+
+// This is actually pref-controlled, but we use this value if we fail to get
+// the pref for any reason.
+#define PAINTLOCK_EVENT_DELAY 5
+
+enum class IntrinsicDirty {
+  // XXXldb eResize should be renamed
+  Resize,       // don't mark any intrinsic widths dirty
+  TreeChange,   // mark intrinsic widths dirty on aFrame and its ancestors
+  StyleChange,  // Do eTreeChange, plus all of aFrame's descendants
+};
+
+enum class ReflowRootHandling {
+  PositionOrSizeChange,    // aFrame is changing position or size
+  NoPositionOrSizeChange,  // ... NOT changing ...
+  InferFromBitToAdd,       // is changing iff (aBitToAdd == NS_FRAME_IS_DIRTY)
+
+  // Note:  With eStyleChange, these can also apply to out-of-flows
+  // in addition to aFrame.
+};
+
+// WhereToScroll should be 0 ~ 100 or -1.  When it's in 0 ~ 100, it means
+// percentage of scrollTop/scrollLeft in scrollHeight/scrollWidth.
+// See the comment for constructor of ScrollAxis for the detail.
+typedef int16_t WhereToScroll;
+static const WhereToScroll kScrollToTop = 0;
+static const WhereToScroll kScrollToLeft = 0;
+static const WhereToScroll kScrollToCenter = 50;
+static const WhereToScroll kScrollToBottom = 100;
+static const WhereToScroll kScrollToRight = 100;
+static const WhereToScroll kScrollMinimum = -1;
+
+// See the comment for constructor of ScrollAxis for the detail.
+enum class WhenToScroll : uint8_t {
+  Always,
+  IfNotVisible,
+  IfNotFullyVisible,
+};
+
+struct ScrollAxis final {
+  /**
+   * aWhere:
+   *   Either a percentage or a special value. PresShell defines:
+   *   * (Default) kScrollMinimum = -1: The visible area is scrolled the
+   *     minimum amount to show as much as possible of the frame. This won't
+   *     hide any initially visible part of the frame.
+   *   * kScrollToTop = 0: The frame's upper edge is aligned with the top edge
+   *     of the visible area.
+   *   * kScrollToBottom = 100: The frame's bottom edge is aligned with the
+   *     bottom edge of the visible area.
+   *   * kScrollToLeft = 0: The frame's left edge is aligned with the left edge
+   *     of the visible area.
+   *   * kScrollToRight = 100: The frame's right edge is aligned* with the right
+   *     edge of the visible area.
+   *   * kScrollToCenter = 50: The frame is centered along the axis the
+   *     ScrollAxis is used for.
+   *
+   *   Other values are treated as a percentage, and the point*"percent"
+   *   down the frame is placed at the point "percent" down the visible area.
+   *
+   * aWhen:
+   *   * (Default) WhenToScroll::IfNotFullyVisible: Move the frame only if it is
+   *     not fully visible (including if it's not visible at all). Note that
+   *     in this case if the frame is too large to fit in view, it will only
+   *     be scrolled if more of it can fit than is already in view.
+   *   * WhenToScroll::IfNotVisible: Move the frame only if none of it is
+   *     visible.
+   *   * WhenToScroll::Always: Move the frame regardless of its current
+   *     visibility.
+   *
+   * aOnlyIfPerceivedScrollableDirection:
+   *   If the direction is not a perceived scrollable direction (i.e. no
+   *   scrollbar showing and less than one device pixel of scrollable
+   *   distance), don't scroll. Defaults to false.
+   */
+  explicit ScrollAxis(WhereToScroll aWhere = kScrollMinimum,
+                      WhenToScroll aWhen = WhenToScroll::IfNotFullyVisible,
+                      bool aOnlyIfPerceivedScrollableDirection = false)
+      : mWhereToScroll(aWhere),
+        mWhenToScroll(aWhen),
+        mOnlyIfPerceivedScrollableDirection(
+            aOnlyIfPerceivedScrollableDirection) {}
+
+  WhereToScroll mWhereToScroll;
+  WhenToScroll mWhenToScroll;
+  bool mOnlyIfPerceivedScrollableDirection : 1;
+};
+
+enum class ScrollFlags {
+  None = 0,
+  ScrollFirstAncestorOnly = 1 << 0,
+  ScrollOverflowHidden = 1 << 1,
+  ScrollNoParentFrames = 1 << 2,
+  ScrollSmooth = 1 << 3,
+  ScrollSmoothAuto = 1 << 4,
+  ScrollSnap = 1 << 5,
+  IgnoreMarginAndPadding = 1 << 6,
+  // ScrollOverflowHidden | ScrollNoParentFrames
+  AnchorScrollFlags = (1 << 1) | (1 << 2),
+  ALL_BITS = (1 << 7) - 1,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(ScrollFlags)
+
+// See comment at declaration of RenderDocument() for the detail.
+enum class RenderDocumentFlags {
+  None = 0,
+  IsUntrusted = 1 << 0,
+  IgnoreViewportScrolling = 1 << 1,
+  DrawCaret = 1 << 2,
+  UseWidgetLayers = 1 << 3,
+  AsyncDecodeImages = 1 << 4,
+  DocumentRelative = 1 << 5,
+  DrawWindowNotFlushing = 1 << 6,
+  UseHighQualityScaling = 1 << 7,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(RenderDocumentFlags)
+
+// See comment at declaration of RenderSelection() for the detail.
+enum class RenderImageFlags {
+  None = 0,
+  IsImage = 1 << 0,
+  AutoScale = 1 << 1,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(RenderImageFlags)
+
+enum class ResolutionChangeOrigin : uint8_t {
+  Apz,
+  Test,
+  MainThreadRestore,
+  MainThreadAdjustment,
+};
+
+// See comment at declaration of AddCanvasBackgroundColorItem() for the detail.
+enum class AddCanvasBackgroundColorFlags {
+  None = 0,
+  ForceDraw = 1 << 0,
+  AddForSubDocument = 1 << 1,
+  AppendUnscrolledOnly = 1 << 2,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(AddCanvasBackgroundColorFlags)
+
+enum class PaintFlags {
+  None = 0,
+  /* Update the layer tree and paint PaintedLayers. If this is not specified,
+   * we may still have to do it if the layer tree lost PaintedLayer contents
+   * we need for compositing. */
+  PaintLayers = 1 << 0,
+  /* Composite layers to the window. */
+  PaintComposite = 1 << 1,
+  /* Sync-decode images. */
+  PaintSyncDecodeImages = 1 << 2,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(PaintFlags)
+
+// See comment at declaration of ScheduleViewManagerFlush() for the detail.
+enum class PaintType { Default, DelayedCompress };
+
+// This is a private enum class of PresShell, but currently,
+// MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS isn't available in class definition.
+// Therefore, we need to put this here.
+enum class RenderingStateFlags : uint8_t {
+  None = 0,
+  IgnoringViewportScrolling = 1 << 0,
+  DrawWindowNotFlushing = 1 << 1,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(RenderingStateFlags)
+
+// The state of the dynamic toolbar on Mobile.
+enum class DynamicToolbarState {
+  None,          // No dynamic toolbar, i.e. the toolbar is static or there is
+                 // no available toolbar.
+  Expanded,      // The dynamic toolbar is expanded to the maximum height.
+  InTransition,  // The dynamic toolbar is being shown/hidden.
+  Collapsed,     // The dynamic toolbar is collapsed to zero height.
+};
+
+#ifdef DEBUG
+
+enum class VerifyReflowFlags {
+  None = 0,
+  On = 1 << 0,
+  Noisy = 1 << 1,
+  All = 1 << 2,
+  DumpCommands = 1 << 3,
+  NoisyCommands = 1 << 4,
+  ReallyNoisyCommands = 1 << 5,
+  DuringResizeReflow = 1 << 6,
+};
+
+MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(VerifyReflowFlags)
+
+#endif  // #ifdef DEBUG
+
+}  // namespace mozilla
+
+#endif  // #ifndef mozilla_PresShellForwards_h