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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)
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parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+// 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(nsRenderingContext* aRenderingContext) override;
+ virtual nscoord GetPrefISize(nsRenderingContext* 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(nsRenderingContext* 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(nsRenderingContext* aRenderingContext);
+
+ nsTableFrame *mTableFrame;
+ nscoord mMinISize;
+ nscoord mPrefISize;
+ nscoord mPrefISizePctExpand;
+ nscoord mLastCalcISize;
+};
+
+#endif /* !defined(BasicTableLayoutStrategy_h_) */