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Diffstat (limited to 'src/3rdparty/webkit/WebCore/rendering/RenderView.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/rendering/RenderView.h | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderView.h b/src/3rdparty/webkit/WebCore/rendering/RenderView.h new file mode 100644 index 0000000..96597de --- /dev/null +++ b/src/3rdparty/webkit/WebCore/rendering/RenderView.h @@ -0,0 +1,226 @@ +/* + * This file is part of the HTML widget for KDE. + * + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * Copyright (C) 2006 Apple Computer, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#ifndef RenderView_h +#define RenderView_h + +#include "FrameView.h" +#include "Frame.h" +#include "LayoutState.h" +#include "RenderBlock.h" + +namespace WebCore { + +class RenderView : public RenderBlock { +public: + RenderView(Node*, FrameView*); + virtual ~RenderView(); + + virtual const char* renderName() const { return "RenderView"; } + + virtual bool isRenderView() const { return true; } + + virtual void layout(); + virtual void calcWidth(); + virtual void calcHeight(); + virtual void calcPrefWidths(); + virtual FloatPoint localToAbsolute(FloatPoint localPoint = FloatPoint(), bool fixed = false, bool useTransforms = false) const; + virtual FloatPoint absoluteToLocal(FloatPoint containerPoint, bool fixed = false, bool useTransforms = false) const; + virtual FloatQuad localToAbsoluteQuad(const FloatQuad&, bool fixed = false) const; + + int docHeight() const; + int docWidth() const; + + // The same as the FrameView's layoutHeight/layoutWidth but with null check guards. + int viewHeight() const; + int viewWidth() const; + + float zoomFactor() const { return m_frameView->frame() && m_frameView->frame()->shouldApplyPageZoom() ? m_frameView->frame()->zoomFactor() : 1.0f; } + + FrameView* frameView() const { return m_frameView; } + + virtual bool hasOverhangingFloats() { return false; } + + virtual void computeAbsoluteRepaintRect(IntRect&, bool fixed = false); + virtual void repaintViewRectangle(const IntRect&, bool immediate = false); + + virtual void paint(PaintInfo&, int tx, int ty); + virtual void paintBoxDecorations(PaintInfo&, int tx, int ty); + + void setSelection(RenderObject* start, int startPos, RenderObject* end, int endPos); + void clearSelection(); + virtual RenderObject* selectionStart() const { return m_selectionStart; } + virtual RenderObject* selectionEnd() const { return m_selectionEnd; } + + bool printing() const; + void setPrintImages(bool enable) { m_printImages = enable; } + bool printImages() const { return m_printImages; } + void setTruncatedAt(int y) { m_truncatedAt = y; m_bestTruncatedAt = m_truncatorWidth = 0; m_forcedPageBreak = false; } + void setBestTruncatedAt(int y, RenderObject *forRenderer, bool forcedBreak = false); + int bestTruncatedAt() const { return m_bestTruncatedAt; } + + int truncatedAt() const { return m_truncatedAt; } + + virtual void absoluteRects(Vector<IntRect>&, int tx, int ty, bool topLevel = true); + virtual void absoluteQuads(Vector<FloatQuad>&, bool topLevel = true); + + IntRect selectionBounds(bool clipToVisibleContent = true) const; + + void setMaximalOutlineSize(int o) { m_maximalOutlineSize = o; } + int maximalOutlineSize() const { return m_maximalOutlineSize; } + + virtual IntRect viewRect() const; + + virtual void selectionStartEnd(int& startPos, int& endPos) const; + + IntRect printRect() const { return m_printRect; } + void setPrintRect(const IntRect& r) { m_printRect = r; } + + void updateWidgetPositions(); + void addWidget(RenderObject*); + void removeWidget(RenderObject*); + + // layoutDelta is used transiently during layout to store how far an object has moved from its + // last layout location, in order to repaint correctly + const IntSize& layoutDelta() const { return m_layoutDelta; } + void addLayoutDelta(const IntSize& delta) { m_layoutDelta += delta; } + + void pushLayoutState(RenderBox* renderer, const IntSize& offset) + { + if (m_layoutStateDisableCount || m_frameView->needsFullRepaint()) + return; + m_layoutState = new (renderArena()) LayoutState(m_layoutState, renderer, offset); + } + + void pushLayoutState(RenderObject*); + + void popLayoutState() + { + if (m_layoutStateDisableCount || m_frameView->needsFullRepaint()) + return; + LayoutState* state = m_layoutState; + m_layoutState = state->m_next; + state->destroy(renderArena()); + } + + LayoutState* layoutState() const { return m_layoutStateDisableCount ? 0 : m_layoutState; } + + // Suspends the LayoutState optimization. Used under transforms that cannot be represented by + // LayoutState (common in SVG) and when manipulating the render tree during layout in ways + // that can trigger repaint of a non-child (e.g. when a list item moves its list marker around). + void disableLayoutState() { m_layoutStateDisableCount++; } + void enableLayoutState() { ASSERT(m_layoutStateDisableCount > 0); m_layoutStateDisableCount--; } + +private: + // selectionRect should never be called on a RenderView + virtual IntRect selectionRect(bool); + +protected: + FrameView* m_frameView; + + RenderObject* m_selectionStart; + RenderObject* m_selectionEnd; + int m_selectionStartPos; + int m_selectionEndPos; + + // used to ignore viewport width when printing to the printer + bool m_printImages; + int m_truncatedAt; + + int m_maximalOutlineSize; // Used to apply a fudge factor to dirty-rect checks on blocks/tables. + IntRect m_printRect; // Used when printing. + + typedef HashSet<RenderObject*> RenderObjectSet; + + RenderObjectSet m_widgets; + +private: + int m_bestTruncatedAt; + int m_truncatorWidth; + bool m_forcedPageBreak; + IntSize m_layoutDelta; + LayoutState* m_layoutState; + unsigned m_layoutStateDisableCount; +}; + +// Stack-based class to assist with LayoutState push/pop +class LayoutStateMaintainer : Noncopyable { +public: + // ctor to push now + LayoutStateMaintainer(RenderView* view, RenderBox* root, IntSize offset, bool shouldPush = true) + : m_view(view) + , m_shouldPushPop(shouldPush) + , m_didStart(false) + , m_didEnd(false) + { + push(root, offset); + } + + // ctor to maybe push later + LayoutStateMaintainer(RenderView* view) + : m_view(view) + , m_shouldPushPop(true) + , m_didStart(false) + , m_didEnd(false) + { + } + + ~LayoutStateMaintainer() + { + ASSERT(m_didStart == m_didEnd); // if this fires, it means that someone did a push(), but forgot to pop(). + } + + void pop() + { + if (m_didStart) { + ASSERT(!m_didEnd); + if (m_shouldPushPop) + m_view->popLayoutState(); + else + m_view->enableLayoutState(); + m_didEnd = true; + } + } + + void push(RenderBox* root, IntSize offset) + { + ASSERT(!m_didStart); + if (m_shouldPushPop) + m_view->pushLayoutState(root, offset); + else + m_view->disableLayoutState(); + m_didStart = true; + } + + bool didPush() const { return m_didStart; } + +private: + RenderView* m_view; + bool m_shouldPushPop : 1; // true if we should push/pop, rather than disable/enable + bool m_didStart : 1; // true if we did a push or disable + bool m_didEnd : 1; // true if we popped or re-enabled +}; + +} // namespace WebCore + +#endif // RenderView_h |