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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/xul/nsBoxLayoutState.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/xul/nsBoxLayoutState.h')
-rw-r--r--layout/xul/nsBoxLayoutState.h77
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diff --git a/layout/xul/nsBoxLayoutState.h b/layout/xul/nsBoxLayoutState.h
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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/. */
+
+/**
+
+ Author:
+ Eric D Vaughan
+
+**/
+
+#ifndef nsBoxLayoutState_h___
+#define nsBoxLayoutState_h___
+
+#include "nsCOMPtr.h"
+#include "nsPresContext.h"
+#include "nsIPresShell.h"
+
+class nsRenderingContext;
+namespace mozilla {
+struct ReflowInput;
+} // namespace mozilla
+
+
+class MOZ_STACK_CLASS nsBoxLayoutState
+{
+ using ReflowInput = mozilla::ReflowInput;
+
+public:
+ explicit nsBoxLayoutState(nsPresContext* aPresContext,
+ nsRenderingContext* aRenderingContext = nullptr,
+ // see OuterReflowInput() below
+ const ReflowInput* aOuterReflowInput = nullptr,
+ uint16_t aReflowDepth = 0);
+ nsBoxLayoutState(const nsBoxLayoutState& aState);
+
+ nsPresContext* PresContext() const { return mPresContext; }
+ nsIPresShell* PresShell() const { return mPresContext->PresShell(); }
+
+ uint32_t LayoutFlags() const { return mLayoutFlags; }
+ void SetLayoutFlags(uint32_t aFlags) { mLayoutFlags = aFlags; }
+
+ // if true no one under us will paint during reflow.
+ void SetPaintingDisabled(bool aDisable) { mPaintingDisabled = aDisable; }
+ bool PaintingDisabled() const { return mPaintingDisabled; }
+
+ // The rendering context may be null for specialized uses of
+ // nsBoxLayoutState and should be null-checked before it is used.
+ // However, passing a null rendering context to the constructor when
+ // doing box layout or intrinsic size calculation will cause bugs.
+ nsRenderingContext* GetRenderingContext() const { return mRenderingContext; }
+
+ struct AutoReflowDepth {
+ explicit AutoReflowDepth(nsBoxLayoutState& aState)
+ : mState(aState) { ++mState.mReflowDepth; }
+ ~AutoReflowDepth() { --mState.mReflowDepth; }
+ nsBoxLayoutState& mState;
+ };
+
+ // The HTML reflow state that lives outside the box-block boundary.
+ // May not be set reliably yet.
+ const ReflowInput* OuterReflowInput() { return mOuterReflowInput; }
+
+ uint16_t GetReflowDepth() { return mReflowDepth; }
+
+private:
+ RefPtr<nsPresContext> mPresContext;
+ nsRenderingContext *mRenderingContext;
+ const ReflowInput *mOuterReflowInput;
+ uint32_t mLayoutFlags;
+ uint16_t mReflowDepth;
+ bool mPaintingDisabled;
+};
+
+#endif
+