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-rw-r--r--layout/tables/nsTableColFrame.h343
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diff --git a/layout/tables/nsTableColFrame.h b/layout/tables/nsTableColFrame.h
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+/* -*- 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 : public nsSplittableFrame {
+public:
+ NS_DECL_FRAMEARENA_HELPERS
+
+ 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,
+ nsStyleContext* aContext);
+
+ nsTableColGroupFrame* GetTableColGroupFrame() const
+ {
+ nsIFrame* parent = GetParent();
+ MOZ_ASSERT(parent && parent->GetType() == nsGkAtoms::tableColGroupFrame);
+ return static_cast<nsTableColGroupFrame*>(parent);
+ }
+
+ nsTableFrame* GetTableFrame() const
+ {
+ return GetTableColGroupFrame()->GetTableFrame();
+ }
+
+ /** @see nsIFrame::DidSetStyleContext */
+ virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
+
+ int32_t GetColIndex() const;
+
+ void SetColIndex (int32_t aColIndex);
+
+ nsTableColFrame* GetNextCol() const;
+
+ virtual void Reflow(nsPresContext* aPresContext,
+ ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) override;
+
+ /**
+ * Table columns never paint anything, nor receive events.
+ */
+ virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists) override {}
+
+ /**
+ * Get the "type" of the frame
+ *
+ * @see nsGkAtoms::tableColFrame
+ */
+ virtual nsIAtom* GetType() const override;
+
+#ifdef DEBUG_FRAME_DUMP
+ virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+ virtual nsSplittableType GetSplittableType() const override;
+
+ virtual mozilla::WritingMode GetWritingMode() const override
+ { return GetTableFrame()->GetWritingMode(); }
+
+ /** return the number of the columns the col represents. always >= 1 */
+ int32_t GetSpan();
+
+ /** convenience method, calls into cellmap */
+ int32_t Count() const;
+
+ nscoord GetIStartBorderWidth() const { return mIStartBorderWidth; }
+ nscoord 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
+ {
+ return nsSplittableFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
+ }
+
+ virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
+ virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
+ virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
+
+protected:
+
+ explicit nsTableColFrame(nsStyleContext* aContext);
+ ~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 aPixelsToTwips = nsPresContext::AppUnitsPerCSSPixel();
+ aBorder.BStart(aWM) = BC_BORDER_END_HALF_COORD(aPixelsToTwips,
+ mBStartContBorderWidth);
+ aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(aPixelsToTwips,
+ mIEndContBorderWidth);
+ aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(aPixelsToTwips,
+ mBEndContBorderWidth);
+ return BC_BORDER_END_HALF_COORD(aPixelsToTwips, mIEndContBorderWidth);
+}
+
+#endif
+