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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 ROCKETCOREDECORATORTILED_H
#define ROCKETCOREDECORATORTILED_H
#include "../../Include/Rocket/Core/Decorator.h"
#include "../../Include/Rocket/Core/Vertex.h"
namespace Rocket {
namespace Core {
struct Texture;
/**
Base class for tiled decorators.
@author Peter Curry
*/
class DecoratorTiled : public Decorator
{
public:
DecoratorTiled();
virtual ~DecoratorTiled();
/**
Stores the repetition mode for a tile, for when it is rendered on a surface that is a
different size than itself.
*/
enum TileRepeatMode
{
STRETCH = 0, // Stretches a single tile across the required surface.
CLAMP_STRETCH = 1, // Clamps the tile to the upper left, stretching the tile inwards to fit into the element if it is too small.
CLAMP_TRUNCATE = 2, // Clamps the tile to the upper left, truncating the tile to fit into the element if it is too small.
REPEAT_STRETCH = 3, // Repeats the tile, stretching the final tile inwards.
REPEAT_TRUNCATE = 4, // Repeats the tile, truncating the final tile.
};
/**
Stores the orientation of a tile.
*/
enum TileOrientation
{
ROTATE_0_CW = 0, // Rotated zero degrees clockwise.
ROTATE_90_CW = 1, // Rotated 90 degrees clockwise.
ROTATE_180_CW = 2, // Rotated 180 degrees clockwise.
ROTATE_270_CW = 3, // Rotated 270 degrees clockwise.
FLIP_HORIZONTAL = 4, // Flipped horizontally.
FLIP_VERTICAL = 5 // Flipped vertically.
};
/**
Structure for storing the different tiles the tiled decorator uses internally over its
surface.
@author Peter Curry
*/
struct Tile
{
/// Constructs the tile with safe default values.
Tile();
/// Calculates the tile's dimensions from the texture and texture coordinates.
void CalculateDimensions(Element* element, const Texture& texture);
/// Get this tile's dimensions.
Vector2f GetDimensions(Element* element);
/// Generates geometry to render this tile across a surface.
/// @param[out] vertices The array to store the generated vertex data.
/// @param[out] indices The array to store the generated index data.
/// @param[in] element The element hosting the decorator.
/// @param[in] surface_origin The starting point of the first tile to generate.
/// @param[in] surface_dimensions The dimensions of the surface to be tiled.
/// @param[in] tile_dimensions The dimensions to render this tile at.
void GenerateGeometry(std::vector< Vertex >& vertices, std::vector< int >& indices, Element* element, const Vector2f& surface_origin, const Vector2f& surface_dimensions, const Vector2f& tile_dimensions) const;
struct TileData
{
Vector2f dimensions;
Vector2f texcoords[2];
};
typedef std::map< RenderInterface*, TileData > TileDataMap;
int texture_index;
Vector2f texcoords[2];
bool texcoords_absolute[2][2];
mutable TileDataMap data;
TileRepeatMode repeat_mode;
TileOrientation orientation;
};
protected:
/// Scales a tile dimensions by a fixed value along one axis.
/// @param tile_dimensions[in, out] The tile dimensions to scale.
/// @param axis_value[in] The fixed value to scale against.
/// @param axis[in] The axis to scale against; either 0 (for x) or 1 (for y).
void ScaleTileDimensions(Vector2f& tile_dimensions, float axis_value, int axis);
};
}
}
#endif
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