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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /layout/tables/BasicTableLayoutStrategy.h | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | layout/tables/BasicTableLayoutStrategy.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/layout/tables/BasicTableLayoutStrategy.h b/layout/tables/BasicTableLayoutStrategy.h new file mode 100644 index 0000000000..d0aaef8ada --- /dev/null +++ b/layout/tables/BasicTableLayoutStrategy.h @@ -0,0 +1,74 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +// vim:cindent:ts=4:et:sw=4: +/* 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/. */ + +/* + * Web-compatible algorithms that determine column and table isizes, + * used for CSS2's 'table-layout: auto'. + */ + +#ifndef BasicTableLayoutStrategy_h_ +#define BasicTableLayoutStrategy_h_ + +#include "mozilla/Attributes.h" +#include "nsITableLayoutStrategy.h" + +class nsTableFrame; + +class BasicTableLayoutStrategy : public nsITableLayoutStrategy { + public: + explicit BasicTableLayoutStrategy(nsTableFrame* aTableFrame); + virtual ~BasicTableLayoutStrategy(); + + // nsITableLayoutStrategy implementation + virtual nscoord GetMinISize(gfxContext* aRenderingContext) override; + virtual nscoord GetPrefISize(gfxContext* aRenderingContext, + bool aComputingSize) override; + virtual void MarkIntrinsicISizesDirty() override; + virtual void ComputeColumnISizes(const ReflowInput& aReflowInput) override; + + private: + // NOTE: Using prefix "BTLS" to avoid overlapping names with + // the values of nsLayoutUtils::IntrinsicISizeType + enum BtlsISizeType { BTLS_MIN_ISIZE, BTLS_PREF_ISIZE, BTLS_FINAL_ISIZE }; + + // Compute intrinsic isize member variables on the columns. + void ComputeColumnIntrinsicISizes(gfxContext* aRenderingContext); + + // Distribute a colspanning cell's percent isize (if any) to its columns. + void DistributePctISizeToColumns(float aSpanPrefPct, int32_t aFirstCol, + int32_t aColCount); + + // Distribute an isize of some BltsISizeType type to a set of columns. + // aISize: The amount of isize to be distributed + // aFirstCol: The index (in the table) of the first column to be + // considered for receiving isize + // aColCount: The number of consecutive columns (starting with aFirstCol) + // to be considered for receiving isize + // aISizeType: The type of isize being distributed. (BTLS_MIN_ISIZE and + // BTLS_PREF_ISIZE are intended to be used for dividing up + // colspan's min & pref isize. BTLS_FINAL_ISIZE is intended + // to be used for distributing the table's final isize across + // all its columns) + // aSpanHasSpecifiedISize: Should be true iff: + // - We're distributing a colspanning cell's + // pref or min isize to its columns + // - The colspanning cell has a specified isize. + void DistributeISizeToColumns(nscoord aISize, int32_t aFirstCol, + int32_t aColCount, BtlsISizeType aISizeType, + bool aSpanHasSpecifiedISize); + + // Compute the min and pref isizes of the table from the isize + // variables on the columns. + void ComputeIntrinsicISizes(gfxContext* aRenderingContext); + + nsTableFrame* mTableFrame; + nscoord mMinISize; + nscoord mPrefISize; + nscoord mPrefISizePctExpand; + nscoord mLastCalcISize; +}; + +#endif /* !defined(BasicTableLayoutStrategy_h_) */ |