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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 ROCKETCOREELEMENTSTYLECACHE_H
#define ROCKETCOREELEMENTSTYLECACHE_H
#include "ElementDefinition.h"
#include "../../Include/Rocket/Core/Types.h"
namespace Rocket {
namespace Core {
class ElementStyle;
/**
Manages caching of layout-important properties and provides
O(1) access to them (note that for invalidated cache, the access
time is still O(log(N)) as per standard std::map).
@author Victor Luchits
*/
class ElementStyleCache
{
public:
ElementStyleCache(ElementStyle *style);
/// Invalidation function for all non-inherited properties
void Clear();
/// Invalidation function for all inherited properties
void ClearInherited();
/// Invalidation functions for individual and grouped non-inherited properties
void ClearOffset();
void ClearBorder();
void ClearMargin();
void ClearPadding();
void ClearDimensions();
void ClearPosition();
void ClearFloat();
void ClearDisplay();
void ClearWhitespace();
void ClearOverflow();
/// Invalidation functions for individual and grouped inherited properties
void ClearLineHeight();
void ClearTextAlign();
void ClearTextTransform();
void ClearVerticalAlign();
/// Returns 'top', 'bottom', 'left' and 'right' properties from element's style or local cache.
void GetOffsetProperties(const Property **top, const Property **bottom, const Property **left, const Property **right );
/// Returns 'border-width' properties from element's style or local cache.
void GetBorderWidthProperties(const Property **border_top_width, const Property **border_bottom_width, const Property **border_left_width, const Property **border_right_width);
/// Returns 'margin' properties from element's style or local cache.
void GetMarginProperties(const Property **margin_top, const Property **margin_bottom, const Property **margin_left, const Property **margin_right);
/// Returns 'padding' properties from element's style or local cache.
void GetPaddingProperties(const Property **padding_top, const Property **padding_bottom, const Property **padding_left, const Property **padding_right);
/// Returns 'width' and 'height' properties from element's style or local cache.
void GetDimensionProperties(const Property **width, const Property **height);
/// Returns local 'width' and 'height' properties from element's style or local cache,
/// ignoring default values.
void GetLocalDimensionProperties(const Property **width, const Property **height);
/// Returns 'overflow' properties' values from element's style or local cache.
void GetOverflow(int *overflow_x, int *overflow_y);
/// Returns 'position' property value from element's style or local cache.
int GetPosition();
/// Returns 'float' property value from element's style or local cache.
int GetFloat();
/// Returns 'display' property value from element's style or local cache.
int GetDisplay();
/// Returns 'white-space' property value from element's style or local cache.
int GetWhitespace();
/// Returns 'line-height' property value from element's style or local cache.
const Property *GetLineHeightProperty();
/// Returns 'text-align' property value from element's style or local cache.
int GetTextAlign();
/// Returns 'text-transform' property value from element's style or local cache.
int GetTextTransform();
/// Returns 'vertical-align' property value from element's style or local cache.
const Property *GetVerticalAlignProperty();
private:
/// Element style that owns this cache instance.
ElementStyle *style;
/// Cached properties.
const Property *top, *bottom, *left, *right;
const Property *border_top_width, *border_bottom_width, *border_left_width, *border_right_width;
const Property *margin_top, *margin_bottom, *margin_left, *margin_right;
const Property *padding_top, *padding_bottom, *padding_left, *padding_right;
const Property *width, *height;
const Property *local_width, *local_height;
bool have_local_width, have_local_height;
int overflow_x, overflow_y;
int position;
int float_;
int display;
int whitespace;
const Property *line_height;
int text_align;
int text_transform;
const Property *vertical_align;
};
}
}
#endif
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