Beispiel #1
0
NS_IMETHODIMP
nsSVGInnerSVGFrame::AttributeChanged(int32_t  aNameSpaceID,
                                     nsIAtom* aAttribute,
                                     int32_t  aModType)
{
  if (aNameSpaceID == kNameSpaceID_None &&
      !(GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD)) {

    SVGSVGElement* content = static_cast<SVGSVGElement*>(mContent);

    if (aAttribute == nsGkAtoms::width ||
        aAttribute == nsGkAtoms::height) {
      nsSVGEffects::InvalidateRenderingObservers(this);
      nsSVGUtils::ScheduleReflowSVG(this);

      if (content->HasViewBoxOrSyntheticViewBox()) {
        // make sure our cached transform matrix gets (lazily) updated
        mCanvasTM = nullptr;
        content->ChildrenOnlyTransformChanged();
        nsSVGUtils::NotifyChildrenOfSVGChange(this, TRANSFORM_CHANGED);
      } else {
        uint32_t flags = COORD_CONTEXT_CHANGED;
        if (mCanvasTM && mCanvasTM->IsSingular()) {
          mCanvasTM = nullptr;
          flags |= TRANSFORM_CHANGED;
        }
        nsSVGUtils::NotifyChildrenOfSVGChange(this, flags);
      }

    } else if (aAttribute == nsGkAtoms::transform ||
               aAttribute == nsGkAtoms::preserveAspectRatio ||
               aAttribute == nsGkAtoms::viewBox ||
               aAttribute == nsGkAtoms::x ||
               aAttribute == nsGkAtoms::y) {
      // make sure our cached transform matrix gets (lazily) updated
      mCanvasTM = nullptr;

      nsSVGUtils::NotifyChildrenOfSVGChange(
          this, aAttribute == nsGkAtoms::viewBox ?
                  TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED : TRANSFORM_CHANGED);

      if (aAttribute == nsGkAtoms::x || aAttribute == nsGkAtoms::y) {
        nsSVGEffects::InvalidateRenderingObservers(this);
        nsSVGUtils::ScheduleReflowSVG(this);
      } else if (aAttribute == nsGkAtoms::transform) {
        nsSVGUtils::InvalidateBounds(this, false);
        nsSVGUtils::ScheduleReflowSVG(this);
      } else if (aAttribute == nsGkAtoms::viewBox ||
                 (aAttribute == nsGkAtoms::preserveAspectRatio &&
                  content->HasViewBoxOrSyntheticViewBox())) {
        nsSVGUtils::InvalidateBounds(this, false);
        nsSVGUtils::ScheduleReflowSVG(this);
        content->ChildrenOnlyTransformChanged();
      }
    }
  }

  return NS_OK;
}
Beispiel #2
0
void
nsSVGOuterSVGFrame::NotifyViewportOrTransformChanged(uint32_t aFlags)
{
  NS_ABORT_IF_FALSE(aFlags &&
                    !(aFlags & ~(COORD_CONTEXT_CHANGED | TRANSFORM_CHANGED |
                                 FULL_ZOOM_CHANGED)),
                    "Unexpected aFlags value");

  // No point in doing anything when were not init'ed yet:
  if (!mViewportInitialized) {
    return;
  }

  SVGSVGElement *content = static_cast<SVGSVGElement*>(mContent);

  if (aFlags & COORD_CONTEXT_CHANGED) {
    if (content->HasViewBoxRect()) {
      // Percentage lengths on children resolve against the viewBox rect so we
      // don't need to notify them of the viewport change, but the viewBox
      // transform will have changed, so we need to notify them of that instead.
      aFlags = TRANSFORM_CHANGED;
    }
    else if (content->ShouldSynthesizeViewBox()) {
      // In the case of a synthesized viewBox, the synthetic viewBox's rect
      // changes as the viewport changes. As a result we need to maintain the
      // COORD_CONTEXT_CHANGED flag.
      aFlags |= TRANSFORM_CHANGED;
    }
    else if (mCanvasTM && mCanvasTM->IsSingular()) {
      // A width/height of zero will result in us having a singular mCanvasTM
      // even when we don't have a viewBox. So we also want to recompute our
      // mCanvasTM for this width/height change even though we don't have a
      // viewBox.
      aFlags |= TRANSFORM_CHANGED;
    }
  }

  bool haveNonFulLZoomTransformChange = (aFlags & TRANSFORM_CHANGED);

  if (aFlags & FULL_ZOOM_CHANGED) {
    // Convert FULL_ZOOM_CHANGED to TRANSFORM_CHANGED:
    aFlags = (aFlags & ~FULL_ZOOM_CHANGED) | TRANSFORM_CHANGED;
  }

  if (aFlags & TRANSFORM_CHANGED) {
    // Make sure our canvas transform matrix gets (lazily) recalculated:
    mCanvasTM = nullptr;

    if (haveNonFulLZoomTransformChange &&
        !(mState & NS_FRAME_IS_NONDISPLAY)) {
      uint32_t flags = (mState & NS_FRAME_IN_REFLOW) ?
                         SVGSVGElement::eDuringReflow : 0;
      content->ChildrenOnlyTransformChanged(flags);
    }
  }

  nsSVGUtils::NotifyChildrenOfSVGChange(GetFirstPrincipalChild(), aFlags);
}
nsresult
nsSVGInnerSVGFrame::AttributeChanged(int32_t  aNameSpaceID,
                                     nsIAtom* aAttribute,
                                     int32_t  aModType)
{
  if (aNameSpaceID == kNameSpaceID_None &&
      !(GetStateBits() & NS_FRAME_IS_NONDISPLAY)) {

    SVGSVGElement* content = static_cast<SVGSVGElement*>(mContent);

    if (aAttribute == nsGkAtoms::width ||
        aAttribute == nsGkAtoms::height) {
      nsSVGEffects::InvalidateRenderingObservers(this);
      nsSVGUtils::ScheduleReflowSVG(this);

      if (content->HasViewBoxOrSyntheticViewBox()) {
        // make sure our cached transform matrix gets (lazily) updated
        mCanvasTM = nullptr;
        content->ChildrenOnlyTransformChanged();
        nsSVGUtils::NotifyChildrenOfSVGChange(this, TRANSFORM_CHANGED);
      } else {
        uint32_t flags = COORD_CONTEXT_CHANGED;
        if (mCanvasTM && mCanvasTM->IsSingular()) {
          mCanvasTM = nullptr;
          flags |= TRANSFORM_CHANGED;
        }
        nsSVGUtils::NotifyChildrenOfSVGChange(this, flags);
      }

    } else if (aAttribute == nsGkAtoms::transform ||
               aAttribute == nsGkAtoms::preserveAspectRatio ||
               aAttribute == nsGkAtoms::viewBox ||
               aAttribute == nsGkAtoms::x ||
               aAttribute == nsGkAtoms::y) {
      // make sure our cached transform matrix gets (lazily) updated
      mCanvasTM = nullptr;

      nsSVGUtils::NotifyChildrenOfSVGChange(
          this, aAttribute == nsGkAtoms::viewBox ?
                  TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED : TRANSFORM_CHANGED);

      // We don't invalidate for transform changes (the layers code does that).
      // Also note that SVGTransformableElement::GetAttributeChangeHint will
      // return nsChangeHint_UpdateOverflow for "transform" attribute changes
      // and cause DoApplyRenderingChangeToTree to make the SchedulePaint call.

      if (aAttribute == nsGkAtoms::x || aAttribute == nsGkAtoms::y) {
        nsSVGEffects::InvalidateRenderingObservers(this);
        nsSVGUtils::ScheduleReflowSVG(this);
      } else if (aAttribute == nsGkAtoms::viewBox ||
                 (aAttribute == nsGkAtoms::preserveAspectRatio &&
                  content->HasViewBoxOrSyntheticViewBox())) {
        content->ChildrenOnlyTransformChanged();
        // SchedulePaint sets a global state flag so we only need to call it once
        // (on ourself is fine), not once on each child (despite bug 828240).
        SchedulePaint();
      }
    }
  }

  return NS_OK;
}