Ejemplo n.º 1
0
void RenderSVGText::layout()
{
    ASSERT(needsLayout());
    LayoutRepainter repainter(*this, checkForRepaintDuringLayout());

    bool updateCachedBoundariesInParents = false;
    if (m_needsTransformUpdate) {
        SVGTextElement* text = static_cast<SVGTextElement*>(node());
        m_localTransform = text->animatedLocalTransform();
        m_needsTransformUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    if (m_needsPositioningValuesUpdate) {
        // Perform SVG text layout phase one (see SVGTextLayoutAttributesBuilder for details).
        SVGTextLayoutAttributesBuilder layoutAttributesBuilder;
        layoutAttributesBuilder.buildLayoutAttributesForTextSubtree(this);
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    // Reduced version of RenderBlock::layoutBlock(), which only takes care of SVG text.
    // All if branches that could cause early exit in RenderBlocks layoutBlock() method are turned into assertions.
    ASSERT(!isInline());
    ASSERT(!layoutOnlyPositionedObjects());
    ASSERT(!scrollsOverflow());
    ASSERT(!hasControlClip());
    ASSERT(!hasColumns());
    ASSERT(!positionedObjects());
    ASSERT(!m_overflow);
    ASSERT(!isAnonymousBlock());

    if (!firstChild())
        setChildrenInline(true);

    // FIXME: We need to find a way to only layout the child boxes, if needed.
    FloatRect oldBoundaries = objectBoundingBox();
    ASSERT(childrenInline());
    forceLayoutInlineChildren();

    if (!updateCachedBoundariesInParents)
        updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();

    // Invalidate all resources of this client if our layout changed.
    if (m_everHadLayout && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(this);

    // If our bounds changed, notify the parents.
    if (updateCachedBoundariesInParents)
        RenderSVGBlock::setNeedsBoundariesUpdate();

    repainter.repaintAfterLayout();
    setNeedsLayout(false);
}
Ejemplo n.º 2
0
void RenderSVGText::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    ASSERT(needsLayout());
    LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(*this));

    bool updateCachedBoundariesInParents = false;
    if (m_needsTransformUpdate) {
        m_localTransform = textElement().animatedLocalTransform();
        m_needsTransformUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    if (!everHadLayout()) {
        // When laying out initially, collect all layout attributes, build the character data map,
        // and propogate resulting SVGLayoutAttributes to all RenderSVGInlineText children in the subtree.
        ASSERT(m_layoutAttributes.isEmpty());
        collectLayoutAttributes(this, m_layoutAttributes);
        updateFontInAllDescendants(this);
        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);

        m_needsReordering = true;
        m_needsTextMetricsUpdate = false;
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    } else if (m_needsPositioningValuesUpdate) {
        // When the x/y/dx/dy/rotate lists change, recompute the layout attributes, and eventually
        // update the on-screen font objects as well in all descendants.
        if (m_needsTextMetricsUpdate) {
            updateFontInAllDescendants(this);
            m_needsTextMetricsUpdate = false;
        }

        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
        m_needsReordering = true;
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    } else if (m_needsTextMetricsUpdate || SVGRenderSupport::findTreeRootObject(*this).isLayoutSizeChanged()) {
        // If the root layout size changed (eg. window size changes) or the transform to the root
        // context has changed then recompute the on-screen font size.
        updateFontInAllDescendants(this, &m_layoutAttributesBuilder);

        ASSERT(!m_needsReordering);
        ASSERT(!m_needsPositioningValuesUpdate);
        m_needsTextMetricsUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    checkLayoutAttributesConsistency(this, m_layoutAttributes);

    // Reduced version of RenderBlock::layoutBlock(), which only takes care of SVG text.
    // All if branches that could cause early exit in RenderBlocks layoutBlock() method are turned into assertions.
    ASSERT(!isInline());
    ASSERT(!simplifiedLayout());
    ASSERT(!scrollsOverflow());
    ASSERT(!hasControlClip());
    ASSERT(!multiColumnFlowThread());
    ASSERT(!positionedObjects());
    ASSERT(!m_overflow);
    ASSERT(!isAnonymousBlock());

    if (!firstChild())
        setChildrenInline(true);

    // FIXME: We need to find a way to only layout the child boxes, if needed.
    FloatRect oldBoundaries = objectBoundingBox();
    ASSERT(childrenInline());
    LayoutUnit repaintLogicalTop = 0;
    LayoutUnit repaintLogicalBottom = 0;
    rebuildFloatingObjectSetFromIntrudingFloats();
    layoutInlineChildren(true, repaintLogicalTop, repaintLogicalBottom);

    if (m_needsReordering)
        m_needsReordering = false;

    if (!updateCachedBoundariesInParents)
        updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();

    // Invalidate all resources of this client if our layout changed.
    if (everHadLayout() && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(*this);

    // If our bounds changed, notify the parents.
    if (updateCachedBoundariesInParents)
        RenderSVGBlock::setNeedsBoundariesUpdate();

    repainter.repaintAfterLayout();
    clearNeedsLayout();
}
void LayoutSVGText::layout()
{
    ASSERT(needsLayout());
    LayoutAnalyzer::Scope analyzer(*this);

    subtreeStyleDidChange();

    bool updateCachedBoundariesInParents = false;
    if (m_needsTransformUpdate) {
        m_localTransform = toSVGTextElement(node())->calculateAnimatedLocalTransform();
        m_needsTransformUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    if (!everHadLayout()) {
        // When laying out initially, collect all layout attributes, build the character data map,
        // and propogate resulting SVGLayoutAttributes to all LayoutSVGInlineText children in the subtree.
        ASSERT(m_layoutAttributes.isEmpty());
        collectLayoutAttributes(this, m_layoutAttributes);
        updateFontInAllDescendants(this);
        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);

        m_needsReordering = true;
        m_needsTextMetricsUpdate = false;
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    } else if (m_needsPositioningValuesUpdate) {
        // When the x/y/dx/dy/rotate lists change, recompute the layout attributes, and eventually
        // update the on-screen font objects as well in all descendants.
        if (m_needsTextMetricsUpdate) {
            updateFontInAllDescendants(this);
            m_needsTextMetricsUpdate = false;
        }

        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
        m_needsReordering = true;
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    } else if (m_needsTextMetricsUpdate || SVGLayoutSupport::findTreeRootObject(this)->isLayoutSizeChanged()) {
        // If the root layout size changed (eg. window size changes) or the transform to the root
        // context has changed then recompute the on-screen font size.
        updateFontInAllDescendants(this, &m_layoutAttributesBuilder);

        ASSERT(!m_needsReordering);
        ASSERT(!m_needsPositioningValuesUpdate);
        m_needsTextMetricsUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    checkLayoutAttributesConsistency(this, m_layoutAttributes);

    // Reduced version of LayoutBlock::layoutBlock(), which only takes care of SVG text.
    // All if branches that could cause early exit in LayoutBlocks layoutBlock() method are turned into assertions.
    ASSERT(!isInline());
    ASSERT(!simplifiedLayout());
    ASSERT(!scrollsOverflow());
    ASSERT(!hasControlClip());
    ASSERT(!positionedObjects());
    ASSERT(!isAnonymousBlock());

    if (!firstChild())
        setChildrenInline(true);

    // FIXME: We need to find a way to only layout the child boxes, if needed.
    FloatRect oldBoundaries = objectBoundingBox();
    ASSERT(childrenInline());

    rebuildFloatsFromIntruding();

    LayoutUnit beforeEdge = borderBefore() + paddingBefore();
    LayoutUnit afterEdge = borderAfter() + paddingAfter() + scrollbarLogicalHeight();
    setLogicalHeight(beforeEdge);

    LayoutState state(*this, locationOffset());
    LayoutUnit paintInvalidationLogicalTop = 0;
    LayoutUnit paintInvalidationLogicalBottom = 0;
    layoutInlineChildren(true, paintInvalidationLogicalTop, paintInvalidationLogicalBottom, afterEdge);

    if (m_needsReordering)
        m_needsReordering = false;

    // If we don't have any line boxes, then make sure the frame rect is still cleared.
    if (!firstLineBox())
        setFrameRect(LayoutRect());

    m_overflow.clear();
    addVisualEffectOverflow();

    if (!updateCachedBoundariesInParents)
        updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();

    // Invalidate all resources of this client if our layout changed.
    if (everHadLayout() && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(this);

    // If our bounds changed, notify the parents.
    if (updateCachedBoundariesInParents)
        LayoutSVGBlock::setNeedsBoundariesUpdate();

    clearNeedsLayout();
}
Ejemplo n.º 4
0
void RenderSVGText::layout()
{
    ASSERT(needsLayout());
    LayoutRepainter repainter(*this, checkForRepaintDuringLayout());

    bool updateCachedBoundariesInParents = false;
    if (m_needsTransformUpdate) {
        SVGTextElement* text = static_cast<SVGTextElement*>(node());
        m_localTransform = text->animatedLocalTransform();
        m_needsTransformUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    // If the root layout size changed (eg. window size changes) or the positioning values change
    // or the transform to the root context has changed then recompute the on-screen font size.
    if (m_needsTextMetricsUpdate || SVGRenderSupport::findTreeRootObject(this)->isLayoutSizeChanged()) {
        recursiveUpdateScaledFont(this);
        rebuildLayoutAttributes(true);
        updateCachedBoundariesInParents = true;
        m_needsTextMetricsUpdate = false;
    }

    if (m_needsPositioningValuesUpdate) {
        // Perform SVG text layout phase one (see SVGTextLayoutAttributesBuilder for details).
        m_layoutAttributesBuilder.buildLayoutAttributesForWholeTree(this);
        m_needsReordering = true;
        m_needsPositioningValuesUpdate = false;
        updateCachedBoundariesInParents = true;
    }

    // Reduced version of RenderBlock::layoutBlock(), which only takes care of SVG text.
    // All if branches that could cause early exit in RenderBlocks layoutBlock() method are turned into assertions.
    ASSERT(!isInline());
    ASSERT(!simplifiedLayout());
    ASSERT(!scrollsOverflow());
    ASSERT(!hasControlClip());
    ASSERT(!hasColumns());
    ASSERT(!positionedObjects());
    ASSERT(!m_overflow);
    ASSERT(!isAnonymousBlock());

    if (!firstChild())
        setChildrenInline(true);

    // FIXME: We need to find a way to only layout the child boxes, if needed.
    FloatRect oldBoundaries = objectBoundingBox();
    ASSERT(childrenInline());
    forceLayoutInlineChildren();

    if (m_needsReordering)
        m_needsReordering = false;

    if (!updateCachedBoundariesInParents)
        updateCachedBoundariesInParents = oldBoundaries != objectBoundingBox();

    // Invalidate all resources of this client if our layout changed.
    if (everHadLayout() && selfNeedsLayout())
        SVGResourcesCache::clientLayoutChanged(this);

    // If our bounds changed, notify the parents.
    if (updateCachedBoundariesInParents)
        RenderSVGBlock::setNeedsBoundariesUpdate();

    repainter.repaintAfterLayout();
    setNeedsLayout(false);
}