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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef ROCKETCORELAYOUTLINEBOX_H
#define ROCKETCORELAYOUTLINEBOX_H
#include "LayoutInlineBox.h"
namespace Rocket {
namespace Core {
class LayoutBlockBox;
/**
@author Peter Curry
*/
class LayoutLineBox
{
public:
LayoutLineBox(LayoutBlockBox* parent);
~LayoutLineBox();
/// Closes the line box, positioning all inline elements within it.
/// @param overflow[in] The overflow box from a split inline box that caused this line to close. Leave this as NULL if we closed naturally.
/// @return If there was any overflow, this will be the last element generated by the spilling content. Otherwise, this will be NULL.
LayoutInlineBox* Close(LayoutInlineBox* overflow = NULL);
/// Closes one of the line box's inline boxes.
/// @param inline_box[in] The inline box to close. This should always be the line box's open box.
void CloseInlineBox(LayoutInlineBox* inline_box);
/// Attempts to add a new element to this line box. If it can't fit, or needs to be split, new line boxes will
/// be created. The inline box for the final section of the element will be returned.
/// @param element[in] The element to fit into this line box.
/// @param box[in] The element's extents.
/// @return The inline box for the element.
LayoutInlineBox* AddElement(Element* element, const Box& box);
/// Attempts to add a new inline box to this line. If it can't fit, or needs to be split, new line boxes will
/// be created. The inline box for the final section of the element will be returned.
/// @param box[in] The inline box to be added to the line.
/// @return The final inline box.
LayoutInlineBox* AddBox(LayoutInlineBox* box);
/// Adds an inline box as a chained hierarchy overflowing to this line. The chain will be extended into
/// this line box.
/// @param split_box[in] The box overflowed from a previous line.
void AddChainedBox(LayoutInlineBox* chained_box);
/// Returns the position of the line box, relative to its parent's block box's content area.
/// @return The position of the line box.
const Vector2f& GetPosition() const;
/// Returns the position of the line box, relative to its parent's block box's offset parent.
/// @return The relative position of the line box.
Vector2f GetRelativePosition() const;
/// Returns the dimensions of the line box.
/// @return The dimensions of the line box.
const Vector2f& GetDimensions() const;
/// Returns the line box's open inline box.
/// @return The line's open inline box, or NULL if it currently has none.
LayoutInlineBox* GetOpenInlineBox();
/// Returns the line's containing block box.
/// @return The line's block box.
LayoutBlockBox* GetBlockBox();
void* operator new(size_t size);
void operator delete(void* chunk);
private:
/// Appends an inline box to the end of the line box's list of inline boxes.
void AppendBox(LayoutInlineBox* box);
typedef std::vector< LayoutInlineBox* > InlineBoxList;
// The block box containing this line.
LayoutBlockBox* parent;
// The top-left position of the line box; this is set when the first inline box is placed.
Vector2f position;
bool position_set;
// The width and height of the line box; this is set when the line box is placed.
Vector2f dimensions;
bool wrap_content;
// The horizontal cursor. This is where the next inline box will be placed along the line.
float box_cursor;
// The list of inline boxes in this line box. These line boxes may be parented to others in this list.
InlineBoxList inline_boxes;
// The open inline box; this is NULL if all inline boxes are closed.
LayoutInlineBox* open_inline_box;
};
}
}
#endif
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