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/*
* Copyright 2018 Vincent Sanders <vince@netsurf-browser.org>
*
* This file is part of libnspdf.
*
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
*/
/**
* \file
* NetSurf PDF library page manipulation.
*/
#ifndef NSPDF_PAGE_H_
#define NSPDF_PAGE_H_
#include <nspdf/errors.h>
struct nspdf_doc;
/**
* Type of plot operation
*/
enum nspdf_style_operation {
NSPDF_OP_TYPE_NONE = 0, /**< No operation */
NSPDF_OP_TYPE_SOLID, /**< Solid colour */
NSPDF_OP_TYPE_DOT, /**< Dotted plot */
NSPDF_OP_TYPE_DASH, /**< Dashed plot */
};
/**
* Plot style for stroke/fill plotters
*/
typedef struct nspdf_style {
enum nspdf_style_operation stroke_type; /**< Stroke plot type */
float stroke_width; /**< Width of stroke, in pixels */
uint32_t stroke_colour; /**< Colour of stroke XBGR */
enum nspdf_style_operation fill_type; /**< Fill plot type */
uint32_t fill_colour; /**< Colour of fill XBGR */
} nspdf_style;
enum nspdf_path_command {
NSPDF_PATH_MOVE = 0,
NSPDF_PATH_CLOSE,
NSPDF_PATH_LINE,
NSPDF_PATH_BEZIER,
};
struct nspdf_render_ctx {
const void *ctx; /**< context passed to drawing functions */
float device_space[6]; /* user space to device space transformation matrix */
/**
* Plots a path.
*
* Path plot consisting of lines and cubic Bezier curves. Line and fill
* colour is controlled by the style. All elements of the path are in
* device space.
*
* \param style Style controlling the path plot.
* \param p elements of path
* \param n nunber of elements on path
* \param transform A transform to apply to the path.
* \param ctx The drawing context.
* \return NSERROR_OK on success else error code.
*/
nspdferror (*path)(const struct nspdf_style *style, const float *p, unsigned int n, const float transform[6], const void *ctx);
};
nspdferror nspdf_page_count(struct nspdf_doc *doc, unsigned int *pages_out);
nspdferror nspdf_page_render(struct nspdf_doc *doc, unsigned int page_num, struct nspdf_render_ctx* render_ctx);
#endif /* NSPDF_META_H_ */
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