The Tor Browser / file comparison
comparison: layout/tables/BasicTableLayoutStrategy.h
layout/tables/BasicTableLayoutStrategy.h
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:787cff86dc57 |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 // vim:cindent:ts=4:et:sw=4: | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 /* | |
| 8 * Web-compatible algorithms that determine column and table widths, | |
| 9 * used for CSS2's 'table-layout: auto'. | |
| 10 */ | |
| 11 | |
| 12 #ifndef BasicTableLayoutStrategy_h_ | |
| 13 #define BasicTableLayoutStrategy_h_ | |
| 14 | |
| 15 #include "mozilla/Attributes.h" | |
| 16 #include "nsITableLayoutStrategy.h" | |
| 17 | |
| 18 class nsTableFrame; | |
| 19 | |
| 20 class BasicTableLayoutStrategy : public nsITableLayoutStrategy | |
| 21 { | |
| 22 public: | |
| 23 BasicTableLayoutStrategy(nsTableFrame *aTableFrame); | |
| 24 virtual ~BasicTableLayoutStrategy(); | |
| 25 | |
| 26 // nsITableLayoutStrategy implementation | |
| 27 virtual nscoord GetMinWidth(nsRenderingContext* aRenderingContext) MOZ_OVERRIDE; | |
| 28 virtual nscoord GetPrefWidth(nsRenderingContext* aRenderingContext, | |
| 29 bool aComputingSize) MOZ_OVERRIDE; | |
| 30 virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE; | |
| 31 virtual void ComputeColumnWidths(const nsHTMLReflowState& aReflowState) MOZ_OVERRIDE; | |
| 32 | |
| 33 private: | |
| 34 // NOTE: Using prefix "BTLS" to avoid overlapping names with | |
| 35 // the values of nsLayoutUtils::IntrinsicWidthType | |
| 36 enum BtlsWidthType { BTLS_MIN_WIDTH, | |
| 37 BTLS_PREF_WIDTH, | |
| 38 BTLS_FINAL_WIDTH }; | |
| 39 | |
| 40 // Compute intrinsic width member variables on the columns. | |
| 41 void ComputeColumnIntrinsicWidths(nsRenderingContext* aRenderingContext); | |
| 42 | |
| 43 // Distribute a colspanning cell's percent width (if any) to its columns. | |
| 44 void DistributePctWidthToColumns(float aSpanPrefPct, | |
| 45 int32_t aFirstCol, | |
| 46 int32_t aColCount); | |
| 47 | |
| 48 // Distribute a width of some BltsWidthType type to a set of columns. | |
| 49 // aWidth: The amount of width to be distributed | |
| 50 // aFirstCol: The index (in the table) of the first column to be | |
| 51 // considered for receiving width | |
| 52 // aColCount: The number of consecutive columns (starting with aFirstCol) | |
| 53 // to be considered for receiving width | |
| 54 // aWidthType: The type of width being distributed. (BTLS_MIN_WIDTH and | |
| 55 // BTLS_PREF_WIDTH are intended to be used for dividing up | |
| 56 // colspan's min & pref width. BTLS_FINAL_WIDTH is intended | |
| 57 // to be used for distributing the table's final width across | |
| 58 // all its columns) | |
| 59 // aSpanHasSpecifiedWidth: Should be true iff: | |
| 60 // - We're distributing a colspanning cell's | |
| 61 // pref or min width to its columns | |
| 62 // - The colspanning cell has a specified width. | |
| 63 void DistributeWidthToColumns(nscoord aWidth, | |
| 64 int32_t aFirstCol, | |
| 65 int32_t aColCount, | |
| 66 BtlsWidthType aWidthType, | |
| 67 bool aSpanHasSpecifiedWidth); | |
| 68 | |
| 69 | |
| 70 // Compute the min and pref widths of the table from the width | |
| 71 // variables on the columns. | |
| 72 void ComputeIntrinsicWidths(nsRenderingContext* aRenderingContext); | |
| 73 | |
| 74 nsTableFrame *mTableFrame; | |
| 75 nscoord mMinWidth; | |
| 76 nscoord mPrefWidth; | |
| 77 nscoord mPrefWidthPctExpand; | |
| 78 nscoord mLastCalcWidth; | |
| 79 }; | |
| 80 | |
| 81 #endif /* !defined(BasicTableLayoutStrategy_h_) */ |
