| /* |
| * Copyright (C) 2010 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "core/rendering/RenderIFrame.h" |
| |
| #include "HTMLNames.h" |
| #include "core/html/HTMLIFrameElement.h" |
| #include "core/frame/Frame.h" |
| #include "core/frame/FrameView.h" |
| #include "core/rendering/LayoutRectRecorder.h" |
| #include "core/rendering/RenderView.h" |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| RenderIFrame::RenderIFrame(Element* element) |
| : RenderPart(element) |
| { |
| } |
| |
| bool RenderIFrame::shouldComputeSizeAsReplaced() const |
| { |
| // When we're seamless, we use normal block/box sizing code except when inline. |
| return !isSeamless(); |
| } |
| |
| bool RenderIFrame::isInlineBlockOrInlineTable() const |
| { |
| return isSeamless() && isInline(); |
| } |
| |
| LayoutUnit RenderIFrame::minPreferredLogicalWidth() const |
| { |
| if (!isSeamless()) |
| return RenderPart::minPreferredLogicalWidth(); |
| |
| RenderView* childRoot = contentRootRenderer(); |
| if (!childRoot) |
| return 0; |
| |
| return childRoot->minPreferredLogicalWidth() + borderAndPaddingLogicalWidth(); |
| } |
| |
| LayoutUnit RenderIFrame::maxPreferredLogicalWidth() const |
| { |
| if (!isSeamless()) |
| return RenderPart::maxPreferredLogicalWidth(); |
| |
| RenderView* childRoot = contentRootRenderer(); |
| if (!childRoot) |
| return 0; |
| |
| return childRoot->maxPreferredLogicalWidth() + borderAndPaddingLogicalWidth(); |
| } |
| |
| bool RenderIFrame::isSeamless() const |
| { |
| return node() && node()->hasTagName(iframeTag) && toHTMLIFrameElement(node())->shouldDisplaySeamlessly(); |
| } |
| |
| bool RenderIFrame::requiresLayer() const |
| { |
| return RenderPart::requiresLayer() || style()->resize() != RESIZE_NONE; |
| } |
| |
| RenderView* RenderIFrame::contentRootRenderer() const |
| { |
| // FIXME: Is this always a valid cast? What about plugins? |
| ASSERT(!widget() || widget()->isFrameView()); |
| FrameView* childFrameView = toFrameView(widget()); |
| return childFrameView ? childFrameView->frame().contentRenderer() : 0; |
| } |
| |
| void RenderIFrame::layoutSeamlessly() |
| { |
| updateLogicalWidth(); |
| // FIXME: Containers set their height to 0 before laying out their kids (as we're doing here) |
| // however, this causes FrameView::layout() to add vertical scrollbars, incorrectly inflating |
| // the resulting contentHeight(). We'll need to make FrameView::layout() smarter. |
| setLogicalHeight(0); |
| updateWidgetPosition(); // Tell the Widget about our new width/height (it will also layout the child document). |
| |
| // Laying out our kids is normally responsible for adjusting our height, so we set it here. |
| // Replaced elements normally do not respect padding, but seamless elements should: we'll add |
| // both padding and border to the child's logical height here. |
| FrameView* childFrameView = toFrameView(widget()); |
| if (childFrameView) // Widget should never be null during layout(), but just in case. |
| setLogicalHeight(childFrameView->contentsHeight() + borderTop() + borderBottom() + paddingTop() + paddingBottom()); |
| updateLogicalHeight(); |
| |
| updateWidgetPosition(); // Notify the Widget of our final height. |
| |
| // Assert that the child document did a complete layout. |
| RenderView* childRoot = childFrameView ? childFrameView->frame().contentRenderer() : 0; |
| ASSERT(!childFrameView || !childFrameView->layoutPending()); |
| ASSERT_UNUSED(childRoot, !childRoot || !childRoot->needsLayout()); |
| } |
| |
| void RenderIFrame::layout() |
| { |
| ASSERT(needsLayout()); |
| |
| LayoutRectRecorder recorder(*this); |
| if (isSeamless()) { |
| layoutSeamlessly(); |
| // Do not return so as to share the layer and overflow updates below. |
| } else { |
| updateLogicalWidth(); |
| // No kids to layout as a replaced element. |
| updateLogicalHeight(); |
| } |
| |
| m_overflow.clear(); |
| addVisualEffectOverflow(); |
| updateLayerTransform(); |
| |
| clearNeedsLayout(); |
| } |
| |
| } |