layout/xul/nsBoxLayoutState.h@6474c204b198 (annotated)
layout/xul/nsBoxLayoutState.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | /** |
| michael@0 | 7 | |
| michael@0 | 8 | Author: |
| michael@0 | 9 | Eric D Vaughan |
| michael@0 | 10 | |
| michael@0 | 11 | **/ |
| michael@0 | 12 | |
| michael@0 | 13 | #ifndef nsBoxLayoutState_h___ |
| michael@0 | 14 | #define nsBoxLayoutState_h___ |
| michael@0 | 15 | |
| michael@0 | 16 | #include "nsCOMPtr.h" |
| michael@0 | 17 | #include "nsPresContext.h" |
| michael@0 | 18 | #include "nsIPresShell.h" |
| michael@0 | 19 | |
| michael@0 | 20 | class nsRenderingContext; |
| michael@0 | 21 | class nsCalculatedBoxInfo; |
| michael@0 | 22 | struct nsHTMLReflowMetrics; |
| michael@0 | 23 | struct nsHTMLReflowState; |
| michael@0 | 24 | class nsString; |
| michael@0 | 25 | class nsHTMLReflowCommand; |
| michael@0 | 26 | |
| michael@0 | 27 | class MOZ_STACK_CLASS nsBoxLayoutState |
| michael@0 | 28 | { |
| michael@0 | 29 | public: |
| michael@0 | 30 | nsBoxLayoutState(nsPresContext* aPresContext, |
| michael@0 | 31 | nsRenderingContext* aRenderingContext = nullptr, |
| michael@0 | 32 | // see OuterReflowState() below |
| michael@0 | 33 | const nsHTMLReflowState* aOuterReflowState = nullptr, |
| michael@0 | 34 | uint16_t aReflowDepth = 0) NS_HIDDEN; |
| michael@0 | 35 | nsBoxLayoutState(const nsBoxLayoutState& aState) NS_HIDDEN; |
| michael@0 | 36 | |
| michael@0 | 37 | nsPresContext* PresContext() const { return mPresContext; } |
| michael@0 | 38 | nsIPresShell* PresShell() const { return mPresContext->PresShell(); } |
| michael@0 | 39 | |
| michael@0 | 40 | uint32_t LayoutFlags() const { return mLayoutFlags; } |
| michael@0 | 41 | void SetLayoutFlags(uint32_t aFlags) { mLayoutFlags = aFlags; } |
| michael@0 | 42 | |
| michael@0 | 43 | // if true no one under us will paint during reflow. |
| michael@0 | 44 | void SetPaintingDisabled(bool aDisable) { mPaintingDisabled = aDisable; } |
| michael@0 | 45 | bool PaintingDisabled() const { return mPaintingDisabled; } |
| michael@0 | 46 | |
| michael@0 | 47 | // The rendering context may be null for specialized uses of |
| michael@0 | 48 | // nsBoxLayoutState and should be null-checked before it is used. |
| michael@0 | 49 | // However, passing a null rendering context to the constructor when |
| michael@0 | 50 | // doing box layout or intrinsic size calculation will cause bugs. |
| michael@0 | 51 | nsRenderingContext* GetRenderingContext() const { return mRenderingContext; } |
| michael@0 | 52 | |
| michael@0 | 53 | struct AutoReflowDepth { |
| michael@0 | 54 | AutoReflowDepth(nsBoxLayoutState& aState) |
| michael@0 | 55 | : mState(aState) { ++mState.mReflowDepth; } |
| michael@0 | 56 | ~AutoReflowDepth() { --mState.mReflowDepth; } |
| michael@0 | 57 | nsBoxLayoutState& mState; |
| michael@0 | 58 | }; |
| michael@0 | 59 | |
| michael@0 | 60 | // The HTML reflow state that lives outside the box-block boundary. |
| michael@0 | 61 | // May not be set reliably yet. |
| michael@0 | 62 | const nsHTMLReflowState* OuterReflowState() { return mOuterReflowState; } |
| michael@0 | 63 | |
| michael@0 | 64 | uint16_t GetReflowDepth() { return mReflowDepth; } |
| michael@0 | 65 | |
| michael@0 | 66 | private: |
| michael@0 | 67 | nsRefPtr<nsPresContext> mPresContext; |
| michael@0 | 68 | nsRenderingContext *mRenderingContext; |
| michael@0 | 69 | const nsHTMLReflowState *mOuterReflowState; |
| michael@0 | 70 | uint32_t mLayoutFlags; |
| michael@0 | 71 | uint16_t mReflowDepth; |
| michael@0 | 72 | bool mPaintingDisabled; |
| michael@0 | 73 | }; |
| michael@0 | 74 | |
| michael@0 | 75 | #endif |
| michael@0 | 76 |
