C++ (Cpp) SetupCairoStrokeHitGeometry Examples

Example #1

File: nsSVGPathGeometryFrame.cpp Project: Anachid/mozilla-central

nsSVGPathGeometryFrame::GetFrameForPoint(const nsPoint &aPoint)
{
  PRUint16 fillRule, hitTestFlags;
  if (GetStateBits() & NS_STATE_SVG_CLIPPATH_CHILD) {
    hitTestFlags = SVG_HIT_TEST_FILL;
    fillRule = GetClipRule();
  } else {
    hitTestFlags = GetHitTestFlags();
    // XXX once bug 614732 is fixed, aPoint won't need any conversion in order
    // to compare it with mRect.
    gfxMatrix canvasTM = GetCanvasTM();
    if (canvasTM.IsSingular()) {
      return nsnull;
    }
    nsPoint point =
      nsSVGUtils::TransformOuterSVGPointToChildFrame(aPoint, canvasTM, PresContext());
    if (!hitTestFlags || ((hitTestFlags & SVG_HIT_TEST_CHECK_MRECT) &&
                          !mRect.Contains(point)))
      return nsnull;
    fillRule = GetStyleSVG()->mFillRule;
  }

  bool isHit = false;

  nsRefPtr<gfxContext> context =
    new gfxContext(gfxPlatform::GetPlatform()->ScreenReferenceSurface());

  GeneratePath(context);
  gfxPoint userSpacePoint =
    context->DeviceToUser(gfxPoint(PresContext()->AppUnitsToGfxUnits(aPoint.x),
                                   PresContext()->AppUnitsToGfxUnits(aPoint.y)));

  if (fillRule == NS_STYLE_FILL_RULE_EVENODD)
    context->SetFillRule(gfxContext::FILL_RULE_EVEN_ODD);
  else
    context->SetFillRule(gfxContext::FILL_RULE_WINDING);

  if (hitTestFlags & SVG_HIT_TEST_FILL)
    isHit = context->PointInFill(userSpacePoint);
  if (!isHit && (hitTestFlags & SVG_HIT_TEST_STROKE)) {
    SetupCairoStrokeHitGeometry(context);
    isHit = context->PointInStroke(userSpacePoint);
  }

  if (isHit && nsSVGUtils::HitTestClip(this, aPoint))
    return this;

  return nsnull;
}

Example #2

File: nsSVGPathGeometryFrame.cpp Project: amyvmiwei/firefox

nsSVGPathGeometryFrame::GetFrameForPoint(const nsPoint &aPoint)
{
  PRUint16 fillRule, mask;
  // check if we're a clipPath - cheaper than IsClipChild(), and we shouldn't
  // get in here for other nondisplay children
  if (GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD) {
    NS_ASSERTION(IsClipChild(), "should be in clipPath but we're not");
    mask = HITTEST_MASK_FILL;
    fillRule = GetClipRule();
  } else {
    mask = GetHittestMask();
    if (!mask || (!(mask & HITTEST_MASK_FORCE_TEST) &&
                  !mRect.Contains(aPoint)))
      return nsnull;
    fillRule = GetStyleSVG()->mFillRule;
  }

  PRBool isHit = PR_FALSE;

  gfxContext context(nsSVGUtils::GetThebesComputationalSurface());

  GeneratePath(&context);
  gfxPoint userSpacePoint =
    context.DeviceToUser(gfxPoint(PresContext()->AppUnitsToGfxUnits(aPoint.x),
                                  PresContext()->AppUnitsToGfxUnits(aPoint.y)));

  if (fillRule == NS_STYLE_FILL_RULE_EVENODD)
    context.SetFillRule(gfxContext::FILL_RULE_EVEN_ODD);
  else
    context.SetFillRule(gfxContext::FILL_RULE_WINDING);

  if (mask & HITTEST_MASK_FILL)
    isHit = context.PointInFill(userSpacePoint);
  if (!isHit && (mask & HITTEST_MASK_STROKE)) {
    SetupCairoStrokeHitGeometry(&context);
    isHit = context.PointInStroke(userSpacePoint);
  }

  if (isHit && nsSVGUtils::HitTestClip(this, aPoint))
    return this;

  return nsnull;
}

Example #3

File: nsSVGGeometryFrame.cpp Project: Akin-Net/mozilla-central

PRBool
nsSVGGeometryFrame::SetupCairoStroke(gfxContext *aContext)
{
  if (!HasStroke()) {
    return PR_FALSE;
  }
  SetupCairoStrokeHitGeometry(aContext);

  const nsStyleSVG* style = GetStyleSVG();
  float opacity = MaybeOptimizeOpacity(style->mStrokeOpacity);

  nsSVGPaintServerFrame *ps =
    GetPaintServer(&style->mStroke, nsSVGEffects::StrokeProperty());
  if (ps && ps->SetupPaintServer(aContext, this, opacity))
    return PR_TRUE;

  // On failure, use the fallback colour in case we have an
  // objectBoundingBox where the width or height of the object is zero.
  // See http://www.w3.org/TR/SVG11/coords.html#ObjectBoundingBox
  SetupFallbackOrPaintColor(aContext, GetStyleContext(),
                            &nsStyleSVG::mStroke, opacity);

  return PR_TRUE;
}