C++ nsRect::TopLeft方法代码示例

/* static */ void
nsSVGIntegrationUtils::DrawPaintServer(nsRenderingContext* aRenderingContext,
                                       nsIFrame*            aTarget,
                                       nsIFrame*            aPaintServer,
                                       gfxPattern::GraphicsFilter aFilter,
                                       const nsRect&        aDest,
                                       const nsRect&        aFill,
                                       const nsPoint&       aAnchor,
                                       const nsRect&        aDirty,
                                       const nsSize&        aPaintServerSize)
{
  if (aDest.IsEmpty() || aFill.IsEmpty())
    return;

  PRInt32 appUnitsPerDevPixel = aTarget->PresContext()->AppUnitsPerDevPixel();
  nsRect destSize = aDest - aDest.TopLeft();
  nsIntSize roundedOut = destSize.ToOutsidePixels(appUnitsPerDevPixel).Size();
  gfxIntSize imageSize(roundedOut.width, roundedOut.height);
  nsRefPtr<gfxDrawable> drawable =
    DrawableFromPaintServer(aPaintServer, aTarget, aPaintServerSize, imageSize);

  if (drawable) {
    nsLayoutUtils::DrawPixelSnapped(aRenderingContext, drawable, aFilter,
                                    aDest, aFill, aAnchor, aDirty);
  }
}

nsresult
nsScreen::GetRect(nsRect& aRect)
{
  // Return window inner rect to prevent fingerprinting.
  if (ShouldResistFingerprinting()) {
    return GetWindowInnerRect(aRect);
  }

  nsDeviceContext *context = GetDeviceContext();

  if (!context) {
    return NS_ERROR_FAILURE;
  }

  context->GetRect(aRect);
  LayoutDevicePoint screenTopLeftDev =
    LayoutDevicePixel::FromAppUnits(aRect.TopLeft(),
                                    context->AppUnitsPerDevPixel());
  DesktopPoint screenTopLeftDesk =
    screenTopLeftDev / context->GetDesktopToDeviceScale();

  aRect.x = NSToIntRound(screenTopLeftDesk.x);
  aRect.y = NSToIntRound(screenTopLeftDesk.y);

  aRect.SetHeight(nsPresContext::AppUnitsToIntCSSPixels(aRect.Height()));
  aRect.SetWidth(nsPresContext::AppUnitsToIntCSSPixels(aRect.Width()));

  return NS_OK;
}

static nsRect
GetSVGBBox(nsIFrame* aNonSVGFrame, nsIFrame* aCurrentFrame,
           const nsRect& aCurrentOverflow, const nsRect& aUserSpaceRect)
{
  NS_ASSERTION(!aNonSVGFrame->GetPrevContinuation(),
               "Need first continuation here");
  // Compute union of all overflow areas relative to 'first'.
  BBoxCollector collector(aNonSVGFrame, aCurrentFrame, aCurrentOverflow);
  nsLayoutUtils::GetAllInFlowBoxes(aNonSVGFrame, &collector);
  // Get it into "user space" for non-SVG frames
  return collector.mResult - aUserSpaceRect.TopLeft();
}

//.........这里部分代码省略.........

  // Do the reflow
  nsHTMLReflowMetrics kidDesiredSize(kidReflowState);
  aKidFrame->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);

  const LogicalSize kidSize = kidDesiredSize.Size(wm).ConvertTo(outerWM, wm);

  LogicalMargin offsets =
    kidReflowState.ComputedLogicalOffsets().ConvertTo(outerWM, wm);

  // If we're solving for start in either inline or block direction,
  // then compute it now that we know the dimensions.
  if ((NS_AUTOOFFSET == offsets.IStart(outerWM)) ||
      (NS_AUTOOFFSET == offsets.BStart(outerWM))) {
    if (-1 == logicalCBSize.ISize(wm)) {
      // Get the containing block width/height
      logicalCBSize =
        kidReflowState.ComputeContainingBlockRectangle(aPresContext,
                                                       &aReflowState);
    }

    if (NS_AUTOOFFSET == offsets.IStart(outerWM)) {
      NS_ASSERTION(NS_AUTOOFFSET != offsets.IEnd(outerWM),
                   "Can't solve for both start and end");
      offsets.IStart(outerWM) =
        logicalCBSize.ConvertTo(outerWM, wm).ISize(outerWM) -
        offsets.IEnd(outerWM) - margin.IStartEnd(outerWM) -
        kidSize.ISize(outerWM);
    }
    if (NS_AUTOOFFSET == offsets.BStart(outerWM)) {
      offsets.BStart(outerWM) =
        logicalCBSize.ConvertTo(outerWM, wm).BSize(outerWM) -
        offsets.BEnd(outerWM) - margin.BStartEnd(outerWM) -
        kidSize.BSize(outerWM);
    }
    kidReflowState.SetComputedLogicalOffsets(offsets.ConvertTo(wm, outerWM));
  }

  // Position the child relative to our padding edge
  LogicalRect rect(outerWM,
                   border.IStart(outerWM) + offsets.IStart(outerWM) +
                     margin.IStart(outerWM),
                   border.BStart(outerWM) + offsets.BStart(outerWM) +
                     margin.BStart(outerWM),
                   kidSize.ISize(outerWM), kidSize.BSize(outerWM));
  nsRect r =
    rect.GetPhysicalRect(outerWM, logicalCBSize.GetPhysicalSize(wm) +
                         border.Size(outerWM).GetPhysicalSize(outerWM));

  // Offset the frame rect by the given origin of the absolute containing block.
  // If the frame is auto-positioned on both sides of an axis, it will be
  // positioned based on its containing block and we don't need to offset
  // (unless the caller demands it (the STATIC_POS_IS_CB_ORIGIN case)).
  if (aContainingBlock.TopLeft() != nsPoint(0, 0)) {
    const nsStyleSides& offsets = kidReflowState.mStylePosition->mOffset;
    if (!(offsets.GetLeftUnit() == eStyleUnit_Auto &&
          offsets.GetRightUnit() == eStyleUnit_Auto) ||
        (rsFlags & nsHTMLReflowState::STATIC_POS_IS_CB_ORIGIN)) {
      r.x += aContainingBlock.x;
    }
    if (!(offsets.GetTopUnit() == eStyleUnit_Auto &&
          offsets.GetBottomUnit() == eStyleUnit_Auto) ||
        (rsFlags & nsHTMLReflowState::STATIC_POS_IS_CB_ORIGIN)) {
      r.y += aContainingBlock.y;
    }
  }

  aKidFrame->SetRect(r);

  nsView* view = aKidFrame->GetView();
  if (view) {
    // Size and position the view and set its opacity, visibility, content
    // transparency, and clip
    nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
                                               kidDesiredSize.VisualOverflow());
  } else {
    nsContainerFrame::PositionChildViews(aKidFrame);
  }

  aKidFrame->DidReflow(aPresContext, &kidReflowState,
                       nsDidReflowStatus::FINISHED);

#ifdef DEBUG
  if (nsBlockFrame::gNoisyReflow) {
    nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent - 1);
    printf("abs pos ");
    if (aKidFrame) {
      nsAutoString name;
      aKidFrame->GetFrameName(name);
      printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
    }
    printf("%p rect=%d,%d,%d,%d\n", static_cast<void*>(aKidFrame),
           r.x, r.y, r.width, r.height);
  }
#endif

  if (aOverflowAreas) {
    aOverflowAreas->UnionWith(kidDesiredSize.mOverflowAreas + r.TopLeft());
  }
}

//.........这里部分代码省略.........
    && (aDelegatingFrame->GetType() != nsGkAtoms::inlineFrame)
       //XXX we don't handle splitting frames for inline absolute containing blocks yet
    && (aKidFrame->GetRect().y <= aReflowState.AvailableHeight());
       // Don't split things below the fold. (Ideally we shouldn't *have*
       // anything totally below the fold, but we can't position frames
       // across next-in-flow breaks yet.
  if (constrainHeight) {
    kidReflowState.AvailableHeight() = aReflowState.AvailableHeight() - border.top
                                     - kidReflowState.ComputedPhysicalMargin().top;
    if (NS_AUTOOFFSET != kidReflowState.ComputedPhysicalOffsets().top)
      kidReflowState.AvailableHeight() -= kidReflowState.ComputedPhysicalOffsets().top;
  }

  // Do the reflow
  aKidFrame->Reflow(aPresContext, kidDesiredSize, kidReflowState, aStatus);

  // If we're solving for 'left' or 'top', then compute it now that we know the
  // width/height
  if ((NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().left) ||
      (NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().top)) {
    nscoord aContainingBlockWidth = aContainingBlock.width;
    nscoord aContainingBlockHeight = aContainingBlock.height;

    if (-1 == aContainingBlockWidth) {
      // Get the containing block width/height
      kidReflowState.ComputeContainingBlockRectangle(aPresContext,
                                                     &aReflowState,
                                                     aContainingBlockWidth,
                                                     aContainingBlockHeight);
    }

    if (NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().left) {
      NS_ASSERTION(NS_AUTOOFFSET != kidReflowState.ComputedPhysicalOffsets().right,
                   "Can't solve for both left and right");
      kidReflowState.ComputedPhysicalOffsets().left = aContainingBlockWidth -
                                             kidReflowState.ComputedPhysicalOffsets().right -
                                             kidReflowState.ComputedPhysicalMargin().right -
                                             kidDesiredSize.Width() -
                                             kidReflowState.ComputedPhysicalMargin().left;
    }
    if (NS_AUTOOFFSET == kidReflowState.ComputedPhysicalOffsets().top) {
      kidReflowState.ComputedPhysicalOffsets().top = aContainingBlockHeight -
                                            kidReflowState.ComputedPhysicalOffsets().bottom -
                                            kidReflowState.ComputedPhysicalMargin().bottom -
                                            kidDesiredSize.Height() -
                                            kidReflowState.ComputedPhysicalMargin().top;
    }
  }

  // Position the child relative to our padding edge
  nsRect  rect(border.left + kidReflowState.ComputedPhysicalOffsets().left + kidReflowState.ComputedPhysicalMargin().left,
               border.top + kidReflowState.ComputedPhysicalOffsets().top + kidReflowState.ComputedPhysicalMargin().top,
               kidDesiredSize.Width(), kidDesiredSize.Height());

  // Offset the frame rect by the given origin of the absolute containing block.
  // If the frame is auto-positioned on both sides of an axis, it will be
  // positioned based on its containing block and we don't need to offset.
  if (aContainingBlock.TopLeft() != nsPoint(0, 0)) {
    if (!(kidReflowState.mStylePosition->mOffset.GetLeftUnit() == eStyleUnit_Auto &&
          kidReflowState.mStylePosition->mOffset.GetRightUnit() == eStyleUnit_Auto)) {
      rect.x += aContainingBlock.x;
    }
    if (!(kidReflowState.mStylePosition->mOffset.GetTopUnit() == eStyleUnit_Auto &&
          kidReflowState.mStylePosition->mOffset.GetBottomUnit() == eStyleUnit_Auto)) {
      rect.y += aContainingBlock.y;
    }
  }

  aKidFrame->SetRect(rect);

  nsView* view = aKidFrame->GetView();
  if (view) {
    // Size and position the view and set its opacity, visibility, content
    // transparency, and clip
    nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
                                               kidDesiredSize.VisualOverflow());
  } else {
    nsContainerFrame::PositionChildViews(aKidFrame);
  }

  aKidFrame->DidReflow(aPresContext, &kidReflowState, nsDidReflowStatus::FINISHED);

#ifdef DEBUG
  if (nsBlockFrame::gNoisyReflow) {
    nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent - 1);
    printf("abs pos ");
    if (aKidFrame) {
      nsAutoString name;
      aKidFrame->GetFrameName(name);
      printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
    }
    printf("%p rect=%d,%d,%d,%d\n", static_cast<void*>(aKidFrame),
           rect.x, rect.y, rect.width, rect.height);
  }
#endif

  if (aOverflowAreas) {
    aOverflowAreas->UnionWith(kidDesiredSize.mOverflowAreas + rect.TopLeft());
  }
}

DrawResult
TableBackgroundPainter::PaintCell(nsTableCellFrame* aCell,
                                  const TableBackgroundData& aRowGroupBGData,
                                  const TableBackgroundData& aRowBGData,
                                  nsRect&           aCellBGRect,
                                  nsRect&           aRowBGRect,
                                  nsRect&           aRowGroupBGRect,
                                  nsRect&           aColBGRect,
                                  bool              aPassSelf)
{
  MOZ_ASSERT(aCell, "null frame");

  const nsStyleTableBorder* cellTableStyle;
  cellTableStyle = aCell->StyleTableBorder();
  if (NS_STYLE_TABLE_EMPTY_CELLS_SHOW != cellTableStyle->mEmptyCells &&
      aCell->GetContentEmpty() && !mIsBorderCollapse) {
    return DrawResult::SUCCESS;
  }

  int32_t colIndex;
  aCell->GetColIndex(colIndex);
  // We're checking mNumCols instead of mCols.Length() here because mCols can
  // be empty even if mNumCols > 0.
  NS_ASSERTION(size_t(colIndex) < mNumCols, "out-of-bounds column index");
  if (size_t(colIndex) >= mNumCols) {
    return DrawResult::SUCCESS;
  }

  // If callers call PaintRowGroup or PaintRow directly, we haven't processed
  // our columns. Ignore column / col group backgrounds in that case.
  bool haveColumns = !mCols.IsEmpty();

  DrawResult result = DrawResult::SUCCESS;

  //Paint column group background
  if (haveColumns && mCols[colIndex].mColGroup.IsVisible()) {
    DrawResult colGroupResult =
      nsCSSRendering::PaintBackgroundWithSC(mPresContext, mRenderingContext,
                                            mCols[colIndex].mColGroup.mFrame, mDirtyRect,
                                            mCols[colIndex].mColGroup.mRect + mRenderPt,
                                            mCols[colIndex].mColGroup.mFrame->StyleContext(),
                                            mCols[colIndex].mColGroup.StyleBorder(mZeroBorder),
                                            mBGPaintFlags, &aColBGRect);
    UpdateDrawResult(&result, colGroupResult);
  }

  //Paint column background
  if (haveColumns && mCols[colIndex].mCol.IsVisible()) {
    DrawResult colResult =
      nsCSSRendering::PaintBackgroundWithSC(mPresContext, mRenderingContext,
                                            mCols[colIndex].mCol.mFrame, mDirtyRect,
                                            mCols[colIndex].mCol.mRect + mRenderPt,
                                            mCols[colIndex].mCol.mFrame->StyleContext(),
                                            mCols[colIndex].mCol.StyleBorder(mZeroBorder),
                                            mBGPaintFlags, &aColBGRect);
    UpdateDrawResult(&result, colResult);
  }

  //Paint row group background
  if (aRowGroupBGData.IsVisible()) {
    DrawResult rowGroupResult =
      nsCSSRendering::PaintBackgroundWithSC(mPresContext, mRenderingContext,
                                            aRowGroupBGData.mFrame, mDirtyRect,
                                            aRowGroupBGData.mRect + mRenderPt,
                                            aRowGroupBGData.mFrame->StyleContext(),
                                            aRowGroupBGData.StyleBorder(mZeroBorder),
                                            mBGPaintFlags, &aRowGroupBGRect);
    UpdateDrawResult(&result, rowGroupResult);
  }

  //Paint row background
  if (aRowBGData.IsVisible()) {
    DrawResult rowResult =
      nsCSSRendering::PaintBackgroundWithSC(mPresContext, mRenderingContext,
                                            aRowBGData.mFrame, mDirtyRect,
                                            aRowBGData.mRect + mRenderPt,
                                            aRowBGData.mFrame->StyleContext(),
                                            aRowBGData.StyleBorder(mZeroBorder),
                                            mBGPaintFlags, &aRowBGRect);
    UpdateDrawResult(&result, rowResult);
  }

  //Paint cell background in border-collapse unless we're just passing
  if (mIsBorderCollapse && !aPassSelf) {
    DrawResult cellResult =
      aCell->PaintCellBackground(mRenderingContext, mDirtyRect,
                                 aCellBGRect.TopLeft(), mBGPaintFlags);
    UpdateDrawResult(&result, cellResult);
  }

  return result;
}

//.........这里部分代码省略.........
    margin.IStart(outerWM) = margin.IEnd(outerWM) = 0;
  }
  if (kidReflowInput.mFlags.mBOffsetsNeedCSSAlign) {
    margin.BStart(outerWM) = margin.BEnd(outerWM) = 0;
  }

  bool constrainBSize = (aReflowInput.AvailableBSize() != NS_UNCONSTRAINEDSIZE)
    && (aFlags & AbsPosReflowFlags::eConstrainHeight)
       // Don't split if told not to (e.g. for fixed frames)
    && (aDelegatingFrame->GetType() != nsGkAtoms::inlineFrame)
       //XXX we don't handle splitting frames for inline absolute containing blocks yet
    && (aKidFrame->GetLogicalRect(aContainingBlock.Size()).BStart(wm) <=
        aReflowInput.AvailableBSize());
       // Don't split things below the fold. (Ideally we shouldn't *have*
       // anything totally below the fold, but we can't position frames
       // across next-in-flow breaks yet.
  if (constrainBSize) {
    kidReflowInput.AvailableBSize() =
      aReflowInput.AvailableBSize() - border.ConvertTo(wm, outerWM).BStart(wm) -
      kidReflowInput.ComputedLogicalMargin().BStart(wm);
    if (NS_AUTOOFFSET != kidReflowInput.ComputedLogicalOffsets().BStart(wm)) {
      kidReflowInput.AvailableBSize() -=
        kidReflowInput.ComputedLogicalOffsets().BStart(wm);
    }
  }

  // Do the reflow
  ReflowOutput kidDesiredSize(kidReflowInput);
  aKidFrame->Reflow(aPresContext, kidDesiredSize, kidReflowInput, aStatus);

  const LogicalSize kidSize = kidDesiredSize.Size(wm).ConvertTo(outerWM, wm);

  LogicalMargin offsets =
    kidReflowInput.ComputedLogicalOffsets().ConvertTo(outerWM, wm);

  // If we're solving for start in either inline or block direction,
  // then compute it now that we know the dimensions.
  ResolveSizeDependentOffsets(aPresContext, kidReflowInput, kidSize, margin,
                              &offsets, &logicalCBSize);

  // Position the child relative to our padding edge
  LogicalRect rect(outerWM,
                   border.IStart(outerWM) + offsets.IStart(outerWM) +
                     margin.IStart(outerWM),
                   border.BStart(outerWM) + offsets.BStart(outerWM) +
                     margin.BStart(outerWM),
                   kidSize.ISize(outerWM), kidSize.BSize(outerWM));
  nsRect r =
    rect.GetPhysicalRect(outerWM, logicalCBSize.GetPhysicalSize(wm) +
                         border.Size(outerWM).GetPhysicalSize(outerWM));

  // Offset the frame rect by the given origin of the absolute containing block.
  // If the frame is auto-positioned on both sides of an axis, it will be
  // positioned based on its containing block and we don't need to offset
  // (unless the caller demands it (the STATIC_POS_IS_CB_ORIGIN case)).
  if (aContainingBlock.TopLeft() != nsPoint(0, 0)) {
    const nsStyleSides& offsets = kidReflowInput.mStylePosition->mOffset;
    if (!(offsets.GetLeftUnit() == eStyleUnit_Auto &&
          offsets.GetRightUnit() == eStyleUnit_Auto) ||
        (rsFlags & ReflowInput::STATIC_POS_IS_CB_ORIGIN)) {
      r.x += aContainingBlock.x;
    }
    if (!(offsets.GetTopUnit() == eStyleUnit_Auto &&
          offsets.GetBottomUnit() == eStyleUnit_Auto) ||
        (rsFlags & ReflowInput::STATIC_POS_IS_CB_ORIGIN)) {
      r.y += aContainingBlock.y;
    }
  }

  aKidFrame->SetRect(r);

  nsView* view = aKidFrame->GetView();
  if (view) {
    // Size and position the view and set its opacity, visibility, content
    // transparency, and clip
    nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
                                               kidDesiredSize.VisualOverflow());
  } else {
    nsContainerFrame::PositionChildViews(aKidFrame);
  }

  aKidFrame->DidReflow(aPresContext, &kidReflowInput,
                       nsDidReflowStatus::FINISHED);

#ifdef DEBUG
  if (nsBlockFrame::gNoisyReflow) {
    nsFrame::IndentBy(stdout,nsBlockFrame::gNoiseIndent - 1);
    printf("abs pos ");
    nsAutoString name;
    aKidFrame->GetFrameName(name);
    printf("%s ", NS_LossyConvertUTF16toASCII(name).get());
    printf("%p rect=%d,%d,%d,%d\n", static_cast<void*>(aKidFrame),
           r.x, r.y, r.width, r.height);
  }
#endif

  if (aOverflowAreas) {
    aOverflowAreas->UnionWith(kidDesiredSize.mOverflowAreas + r.TopLeft());
  }
}