C++ nsIRenderingContext::FillRect方法代码示例

void
nsPageFrame::PaintPrintPreviewBackground(nsIRenderingContext& aRenderingContext,
                                         nsPoint aPt)
{
  // fill page with White
  aRenderingContext.SetColor(NS_RGB(255,255,255));
  // REVIEW: this used to have rect's width and height be the
  // mClipRect if specialClipIsSet ... but that seems completely bogus
  // and inconsistent with the painting of the shadow below
  nsRect rect(aPt, GetSize());
  rect.width  -= mPD->mShadowSize.width;
  rect.height -= mPD->mShadowSize.height;
  aRenderingContext.FillRect(rect);
  // draw line around outside of page
  aRenderingContext.SetColor(NS_RGB(0,0,0));
  aRenderingContext.DrawRect(rect);

  if (mPD->mShadowSize.width > 0 && mPD->mShadowSize.height > 0) {
    aRenderingContext.SetColor(NS_RGB(51,51,51));
    nsRect r(aPt.x,aPt.y, mRect.width, mRect.height);
    nsRect shadowRect;
    shadowRect.x = r.x + r.width - mPD->mShadowSize.width;
    shadowRect.y = r.y + mPD->mShadowSize.height;
    shadowRect.width  = mPD->mShadowSize.width;
    shadowRect.height = r.height - mPD->mShadowSize.height;
    aRenderingContext.FillRect(shadowRect);

    shadowRect.x = r.x + mPD->mShadowSize.width;
    shadowRect.y = r.y + r.height - mPD->mShadowSize.height;
    shadowRect.width  = r.width - mPD->mShadowSize.width;
    shadowRect.height = mPD->mShadowSize.height;
    aRenderingContext.FillRect(shadowRect);
  }
}

NS_IMETHODIMP
nsPlaceholderFrame::Paint(nsPresContext*      aPresContext,
                          nsIRenderingContext& aRenderingContext,
                          const nsRect&        aDirtyRect,
                          nsFramePaintLayer    aWhichLayer,
                          PRUint32             aFlags)
{
  if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) {
    float p2t;
    p2t = aPresContext->PixelsToTwips();
    aRenderingContext.SetColor(NS_RGB(0, 255, 255));
    nscoord x = NSIntPixelsToTwips(-5, p2t);
    aRenderingContext.FillRect(x, 0, NSIntPixelsToTwips(13, p2t),
                               NSIntPixelsToTwips(3, p2t));
    nscoord y = NSIntPixelsToTwips(-10, p2t);
    aRenderingContext.FillRect(0, y, NSIntPixelsToTwips(3, p2t),
                               NSIntPixelsToTwips(10, p2t));
  }
  DO_GLOBAL_REFLOW_COUNT_DSP("nsPlaceholderFrame", &aRenderingContext);
  return NS_OK;
}

NS_IMETHODIMP
nsMathMLmsqrtFrame::Paint(nsPresContext*      aPresContext,
                          nsIRenderingContext& aRenderingContext,
                          const nsRect&        aDirtyRect,
                          nsFramePaintLayer    aWhichLayer,
                          PRUint32             aFlags)
{
  /////////////
  // paint the content we are square-rooting
  nsresult rv = nsMathMLContainerFrame::Paint(aPresContext, aRenderingContext, 
                                              aDirtyRect, aWhichLayer);
  /////////////
  // paint the sqrt symbol
  if (!NS_MATHML_HAS_ERROR(mPresentationData.flags)) {
    mSqrChar.Paint(aPresContext, aRenderingContext,
                   aDirtyRect, aWhichLayer, this);

    if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer &&
        mStyleContext->GetStyleVisibility()->IsVisible() &&
        !mBarRect.IsEmpty()) {
      // paint the overline bar
      const nsStyleColor* color = GetStyleColor();
      aRenderingContext.SetColor(color->mColor);
      aRenderingContext.FillRect(mBarRect);
    }

#if defined(NS_DEBUG) && defined(SHOW_BOUNDING_BOX)
    // for visual debug
    if (NS_MATHML_PAINT_BOUNDING_METRICS(mPresentationData.flags)) {
      nsRect rect;
      mSqrChar.GetRect(rect);

      nsBoundingMetrics bm;
      mSqrChar.GetBoundingMetrics(bm);

      aRenderingContext.SetColor(NS_RGB(255,0,0));
      nscoord x = rect.x + bm.leftBearing;
      nscoord y = rect.y;
      nscoord w = bm.rightBearing - bm.leftBearing;
      nscoord h = bm.ascent + bm.descent;
      aRenderingContext.DrawRect(x,y,w,h);
    }
#endif
  }

  return rv;
}

/*virtual*/ void
nsHTMLContainerFrame::PaintTextDecorationLines(
                   nsIRenderingContext& aRenderingContext, 
                   nscolor aColor, 
                   nscoord aOffset, 
                   nscoord aAscent, 
                   nscoord aSize) 
{
  nsMargin bp;
  CalcBorderPadding(bp);
  PRIntn skip = GetSkipSides();
  NS_FOR_CSS_SIDES(side) {
    if (skip & (1 << side)) {
      bp.side(side) = 0;
    }
  }
  aRenderingContext.SetColor(aColor);
  nscoord innerWidth = mRect.width - bp.left - bp.right;
  aRenderingContext.FillRect(bp.left, 
                             bp.top + aAscent - aOffset, innerWidth, aSize);
}

//.........这里部分代码省略.........
    // itself, per http://www.w3.org/TR/CSS21/zindex.html point 7.2.1.4.1.1.
    // (We don't apply this rule to the access-key underline because we only
    // find out where that is as a side effect of drawing the text, in the
    // general case -- see below.)
    if (decorations & (NS_FONT_DECORATION_OVERLINE |
                       NS_FONT_DECORATION_UNDERLINE)) {
      fontMet->GetUnderline(offset, size);
      gfxFloat offsetPixel = presContext->AppUnitsToGfxUnits(offset);
      gfxFloat sizePixel = presContext->AppUnitsToGfxUnits(size);
      if (decorations & NS_FONT_DECORATION_UNDERLINE) {
        nsCSSRendering::PaintDecorationLine(ctx, underColor,
                          pt, gfxSize(width, sizePixel),
                          ascentPixel, offsetPixel,
                          NS_STYLE_TEXT_DECORATION_UNDERLINE,
                          nsCSSRendering::DECORATION_STYLE_SOLID);
      }
      if (decorations & NS_FONT_DECORATION_OVERLINE) {
        nsCSSRendering::PaintDecorationLine(ctx, overColor,
                          pt, gfxSize(width, sizePixel),
                          ascentPixel, ascentPixel,
                          NS_STYLE_TEXT_DECORATION_OVERLINE,
                          nsCSSRendering::DECORATION_STYLE_SOLID);
      }
    }

    aRenderingContext.SetFont(fontMet);

    CalculateUnderline(aRenderingContext);

    aRenderingContext.SetColor(aOverrideColor ? *aOverrideColor : GetStyleColor()->mColor);

#ifdef IBMBIDI
    nsresult rv = NS_ERROR_FAILURE;

    if (mState & NS_FRAME_IS_BIDI) {
      presContext->SetBidiEnabled();
      nsBidiPresUtils* bidiUtils = presContext->GetBidiUtils();

      if (bidiUtils) {
        const nsStyleVisibility* vis = GetStyleVisibility();
        nsBidiDirection direction = (NS_STYLE_DIRECTION_RTL == vis->mDirection) ? NSBIDI_RTL : NSBIDI_LTR;
        if (mAccessKeyInfo && mAccessKeyInfo->mAccesskeyIndex != kNotFound) {
           // We let the RenderText function calculate the mnemonic's
           // underline position for us.
           nsBidiPositionResolve posResolve;
           posResolve.logicalIndex = mAccessKeyInfo->mAccesskeyIndex;
           rv = bidiUtils->RenderText(mCroppedTitle.get(), mCroppedTitle.Length(), direction,
                                      presContext, aRenderingContext,
                                      aTextRect.x, baseline,
                                      &posResolve,
                                      1);
           mAccessKeyInfo->mBeforeWidth = posResolve.visualLeftTwips;
           mAccessKeyInfo->mAccessWidth = posResolve.visualWidth;
        }
        else
        {
           rv = bidiUtils->RenderText(mCroppedTitle.get(), mCroppedTitle.Length(), direction,
                                      presContext, aRenderingContext,
                                      aTextRect.x, baseline);
        }
      }
    }
    if (NS_FAILED(rv) )
#endif // IBMBIDI
    {
       aRenderingContext.SetTextRunRTL(PR_FALSE);

       if (mAccessKeyInfo && mAccessKeyInfo->mAccesskeyIndex != kNotFound) {
           // In the simple (non-BiDi) case, we calculate the mnemonic's
           // underline position by getting the text metric.
           // XXX are attribute values always two byte?
           if (mAccessKeyInfo->mAccesskeyIndex > 0)
               aRenderingContext.GetWidth(mCroppedTitle.get(), mAccessKeyInfo->mAccesskeyIndex,
                                          mAccessKeyInfo->mBeforeWidth);
           else
               mAccessKeyInfo->mBeforeWidth = 0;
       }

       aRenderingContext.DrawString(mCroppedTitle, aTextRect.x, baseline);
    }

    if (mAccessKeyInfo && mAccessKeyInfo->mAccesskeyIndex != kNotFound) {
        aRenderingContext.FillRect(aTextRect.x + mAccessKeyInfo->mBeforeWidth,
                                   aTextRect.y + mAccessKeyInfo->mAccessOffset,
                                   mAccessKeyInfo->mAccessWidth,
                                   mAccessKeyInfo->mAccessUnderlineSize);
    }

    // Strikeout is drawn on top of the text, per
    // http://www.w3.org/TR/CSS21/zindex.html point 7.2.1.4.1.1.
    if (decorations & NS_FONT_DECORATION_LINE_THROUGH) {
      fontMet->GetStrikeout(offset, size);
      gfxFloat offsetPixel = presContext->AppUnitsToGfxUnits(offset);
      gfxFloat sizePixel = presContext->AppUnitsToGfxUnits(size);
      nsCSSRendering::PaintDecorationLine(ctx, strikeColor,
                        pt, gfxSize(width, sizePixel), ascentPixel, offsetPixel,
                        NS_STYLE_TEXT_DECORATION_LINE_THROUGH,
                        nsCSSRendering::DECORATION_STYLE_SOLID);
    }
}