layout/tables/nsTableColFrame.h
author alwu <alwu@mozilla.com>
Mon, 07 Jan 2019 19:57:48 +0000
changeset 512757 0e229bbdaae5c8fa9f83796c628a4fdf88f057ba
parent 508652 9d18f3b4b898108d8ab5c924d366d145e5e62df0
child 518473 525e804dc7e63855e026be9557af15340d71455a
permissions -rw-r--r--
Bug 1513039 - part5 : log warning when autoplay is blocked. r=cpearce,karlt Wrap 'nsContentUtils::ReportToConsole()' to reduce necessary input parameters and call it when we need to log error or warning message. Show the warning when autoplay is blocked. For web audio, this restores the console messages removed in part4 and also reports the same message when the AudioContext is blocked in the constructor. Differential Revision: https://phabricator.services.mozilla.com/D14330

/* -*- 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/. */
#ifndef nsTableColFrame_h__
#define nsTableColFrame_h__

#include "mozilla/Attributes.h"
#include "celldata.h"
#include "nscore.h"
#include "nsContainerFrame.h"
#include "nsTArray.h"
#include "nsTableColGroupFrame.h"
#include "mozilla/WritingModes.h"

class nsTableColFrame final : public nsSplittableFrame {
 public:
  NS_DECL_FRAMEARENA_HELPERS(nsTableColFrame)

  enum {
    eWIDTH_SOURCE_NONE = 0,  // no cell has contributed to the width style
    eWIDTH_SOURCE_CELL = 1,  // a cell specified a width
    eWIDTH_SOURCE_CELL_WITH_SPAN = 2  // a cell implicitly specified a width via
                                      // colspan
  };

  nsTableColType GetColType() const;
  void SetColType(nsTableColType aType);

  /**
   * instantiate a new instance of nsTableRowFrame.
   *
   * @param aPresShell the pres shell for this frame
   *
   * @return           the frame that was created
   */
  friend nsTableColFrame* NS_NewTableColFrame(nsIPresShell* aPresShell,
                                              ComputedStyle* aContext);

  // nsIFrame overrides
  virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
                    nsIFrame* aPrevInFlow) override {
    nsSplittableFrame::Init(aContent, aParent, aPrevInFlow);
    if (!aPrevInFlow) {
      mWritingMode = GetTableFrame()->GetWritingMode();
    }
  }

  /** @see nsIFrame::DidSetComputedStyle */
  virtual void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;

  virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
                      const ReflowInput& aReflowInput,
                      nsReflowStatus& aStatus) override;

  virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
                                const nsDisplayListSet& aLists) override;

#ifdef DEBUG_FRAME_DUMP
  virtual nsresult GetFrameName(nsAString& aResult) const override;
#endif

  nsTableColGroupFrame* GetTableColGroupFrame() const {
    nsIFrame* parent = GetParent();
    MOZ_ASSERT(parent && parent->IsTableColGroupFrame());
    return static_cast<nsTableColGroupFrame*>(parent);
  }

  nsTableFrame* GetTableFrame() const {
    return GetTableColGroupFrame()->GetTableFrame();
  }

  int32_t GetColIndex() const;

  void SetColIndex(int32_t aColIndex);

  nsTableColFrame* GetNextCol() const;

  /** return the number of the columns the col represents.  always >= 1 */
  int32_t GetSpan();

  /** convenience method, calls into cellmap */
  int32_t Count() const;

  BCPixelSize GetIStartBorderWidth() const { return mIStartBorderWidth; }
  BCPixelSize GetIEndBorderWidth() const { return mIEndBorderWidth; }
  void SetIStartBorderWidth(BCPixelSize aWidth) { mIStartBorderWidth = aWidth; }
  void SetIEndBorderWidth(BCPixelSize aWidth) { mIEndBorderWidth = aWidth; }

  /**
   * Gets inner border widths before collapsing with cell borders
   * Caller must get istart border from previous column or from table
   * GetContinuousBCBorderWidth will not overwrite aBorder.IStart
   * see nsTablePainter about continuous borders
   *
   * @return outer iend border width (istart inner for next column)
   */
  nscoord GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
                                     mozilla::LogicalMargin& aBorder);
  /**
   * Set full border widths before collapsing with cell borders
   * @param aForSide - side to set; only valid for bstart, iend, and bend
   */
  void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
                                  BCPixelSize aPixelValue);
#ifdef DEBUG
  void Dump(int32_t aIndent);
#endif

  /**
   * Restore the default values of the intrinsic widths, so that we can
   * re-accumulate intrinsic widths from the cells in the column.
   */
  void ResetIntrinsics() {
    mMinCoord = 0;
    mPrefCoord = 0;
    mPrefPercent = 0.0f;
    mHasSpecifiedCoord = false;
  }

  /**
   * Restore the default value of the preferred percentage width (the
   * only intrinsic width used by FixedTableLayoutStrategy.
   */
  void ResetPrefPercent() { mPrefPercent = 0.0f; }

  /**
   * Restore the default values of the temporary buffer for
   * spanning-cell intrinsic widths (as we process spanning cells).
   */
  void ResetSpanIntrinsics() {
    mSpanMinCoord = 0;
    mSpanPrefCoord = 0;
    mSpanPrefPercent = 0.0f;
  }

  /**
   * Add the widths for a cell or column element, or the contribution of
   * the widths from a column-spanning cell:
   * @param aMinCoord The minimum intrinsic width
   * @param aPrefCoord The preferred intrinsic width or, if there is a
   *   specified non-percentage width, max(specified width, minimum intrinsic
   *   width).
   * @param aHasSpecifiedCoord Whether there is a specified
   *   non-percentage width.
   *
   * Note that the implementation of this functions is a bit tricky
   * since mPrefCoord means different things depending on
   * whether mHasSpecifiedCoord is true (and likewise for aPrefCoord and
   * aHasSpecifiedCoord).  If mHasSpecifiedCoord is false, then
   * all widths added had aHasSpecifiedCoord false and mPrefCoord is the
   * largest of the pref widths.  But if mHasSpecifiedCoord is true,
   * then mPrefCoord is the largest of (1) the pref widths for cells
   * with aHasSpecifiedCoord true and (2) the min widths for cells with
   * aHasSpecifiedCoord false.
   */
  void AddCoords(nscoord aMinCoord, nscoord aPrefCoord,
                 bool aHasSpecifiedCoord) {
    NS_ASSERTION(aMinCoord <= aPrefCoord, "intrinsic widths out of order");

    if (aHasSpecifiedCoord && !mHasSpecifiedCoord) {
      mPrefCoord = mMinCoord;
      mHasSpecifiedCoord = true;
    }
    if (!aHasSpecifiedCoord && mHasSpecifiedCoord) {
      aPrefCoord = aMinCoord;  // NOTE: modifying argument
    }

    if (aMinCoord > mMinCoord) mMinCoord = aMinCoord;
    if (aPrefCoord > mPrefCoord) mPrefCoord = aPrefCoord;

    NS_ASSERTION(mMinCoord <= mPrefCoord, "min larger than pref");
  }

  /**
   * Add a percentage width specified on a cell or column element or the
   * contribution to this column of a percentage width specified on a
   * column-spanning cell.
   */
  void AddPrefPercent(float aPrefPercent) {
    if (aPrefPercent > mPrefPercent) mPrefPercent = aPrefPercent;
  }

  /**
   * Get the largest minimum intrinsic width for this column.
   */
  nscoord GetMinCoord() const { return mMinCoord; }
  /**
   * Get the largest preferred width for this column, or, if there were
   * any specified non-percentage widths (see GetHasSpecifiedCoord), the
   * largest minimum intrinsic width or specified width.
   */
  nscoord GetPrefCoord() const { return mPrefCoord; }
  /**
   * Get whether there were any specified widths contributing to this
   * column.
   */
  bool GetHasSpecifiedCoord() const { return mHasSpecifiedCoord; }

  /**
   * Get the largest specified percentage width contributing to this
   * column (returns 0 if there were none).
   */
  float GetPrefPercent() const { return mPrefPercent; }

  /**
   * Like AddCoords, but into a temporary buffer used for groups of
   * column-spanning cells.
   */
  void AddSpanCoords(nscoord aSpanMinCoord, nscoord aSpanPrefCoord,
                     bool aSpanHasSpecifiedCoord) {
    NS_ASSERTION(aSpanMinCoord <= aSpanPrefCoord,
                 "intrinsic widths out of order");

    if (!aSpanHasSpecifiedCoord && mHasSpecifiedCoord) {
      aSpanPrefCoord = aSpanMinCoord;  // NOTE: modifying argument
    }

    if (aSpanMinCoord > mSpanMinCoord) mSpanMinCoord = aSpanMinCoord;
    if (aSpanPrefCoord > mSpanPrefCoord) mSpanPrefCoord = aSpanPrefCoord;

    NS_ASSERTION(mSpanMinCoord <= mSpanPrefCoord, "min larger than pref");
  }

  /*
   * Accumulate percentage widths on column spanning cells into
   * temporary variables.
   */
  void AddSpanPrefPercent(float aSpanPrefPercent) {
    if (aSpanPrefPercent > mSpanPrefPercent)
      mSpanPrefPercent = aSpanPrefPercent;
  }

  /*
   * Accumulate the temporary variables for column spanning cells into
   * the primary variables.
   */
  void AccumulateSpanIntrinsics() {
    AddCoords(mSpanMinCoord, mSpanPrefCoord, mHasSpecifiedCoord);
    AddPrefPercent(mSpanPrefPercent);
  }

  // Used to adjust a column's pref percent so that the table's total
  // never exceeeds 100% (by only allowing percentages to be used,
  // starting at the first column, until they reach 100%).
  void AdjustPrefPercent(float* aTableTotalPercent) {
    float allowed = 1.0f - *aTableTotalPercent;
    if (mPrefPercent > allowed) mPrefPercent = allowed;
    *aTableTotalPercent += mPrefPercent;
  }

  // The final width of the column.
  void ResetFinalISize() {
    mFinalISize = nscoord_MIN;  // so we detect that it changed
  }
  void SetFinalISize(nscoord aFinalISize) { mFinalISize = aFinalISize; }
  nscoord GetFinalISize() { return mFinalISize; }

  virtual bool IsFrameOfType(uint32_t aFlags) const override {
    if (aFlags & eSupportsContainLayoutAndPaint) {
      return false;
    }

    return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
  }

  virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0,
                               bool aRebuildDisplayItems = true) override;
  virtual void InvalidateFrameWithRect(
      const nsRect& aRect, uint32_t aDisplayItemKey = 0,
      bool aRebuildDisplayItems = true) override;
  virtual void InvalidateFrameForRemoval() override {
    InvalidateFrameSubtree();
  }

 protected:
  explicit nsTableColFrame(ComputedStyle* aStyle);
  ~nsTableColFrame();

  nscoord mMinCoord;
  nscoord mPrefCoord;
  nscoord mSpanMinCoord;   // XXX...
  nscoord mSpanPrefCoord;  // XXX...
  float mPrefPercent;
  float mSpanPrefPercent;  // XXX...
  // ...XXX the four members marked above could be allocated as part of
  // a separate array allocated only during
  // BasicTableLayoutStrategy::ComputeColumnIntrinsicISizes (and only
  // when colspans were present).
  nscoord mFinalISize;

  // the index of the column with respect to the whole table (starting at 0)
  // it should never be smaller then the start column index of the parent
  // colgroup
  uint32_t mColIndex;

  // border width in pixels of the inner half of the border only
  BCPixelSize mIStartBorderWidth;
  BCPixelSize mIEndBorderWidth;
  BCPixelSize mBStartContBorderWidth;
  BCPixelSize mIEndContBorderWidth;
  BCPixelSize mBEndContBorderWidth;

  bool mHasSpecifiedCoord;
};

inline int32_t nsTableColFrame::GetColIndex() const { return mColIndex; }

inline void nsTableColFrame::SetColIndex(int32_t aColIndex) {
  mColIndex = aColIndex;
}

inline nscoord nsTableColFrame::GetContinuousBCBorderWidth(
    mozilla::WritingMode aWM, mozilla::LogicalMargin& aBorder) {
  int32_t d2a = PresContext()->AppUnitsPerDevPixel();
  aBorder.BStart(aWM) = BC_BORDER_END_HALF_COORD(d2a, mBStartContBorderWidth);
  aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mIEndContBorderWidth);
  aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mBEndContBorderWidth);
  return BC_BORDER_END_HALF_COORD(d2a, mIEndContBorderWidth);
}

#endif