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/*
* Copyright 2009 Vincent Sanders <vince@simtec.co.uk>
*
* This file is part of libnsfb, http://www.netsurf-browser.org/
* Licenced under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
*
* This is the exported legacy plotter interface for the libnsfb graphics
* library. This interface should *not* be used for new projects. It is not
* thread safe as the framebuffer context is held as a global and not passed.
*/
#ifndef _LIBNSFB_LEGACY_PLOT_H
#define _LIBNSFB_LEGACY_PLOT_H 1
/** Set the framebuffer context for all legacy plot operations.
*/
bool nsfb_lplot_ctx(nsfb_t *nsfb);
/** Sets a clip rectangle for subsequent plots.
*
* Sets a clipping area which constrains all subsequent plotting operations.
* The clipping area must lie within the framebuffer visible screen or false
* will be returned and the new clipping area not set.
*/
bool nsfb_lplot_clip(int x0, int y0, int x1, int y1);
/** Clears plotting area to a flat colour.
*/
bool nsfb_lplot_clg(nsfb_colour_t c);
/** Plots a rectangle outline.
*
* The line can be solid, dotted or dashed. Top left corner at (x0,y0) and
* rectangle has given width and height.
*/
bool nsfb_lplot_rectangle(int x0, int y0, int width, int height, int line_width, nsfb_colour_t c, bool dotted, bool dashed);
/** Plots a filled rectangle.
*
* Top left corner at (x0,y0), bottom right corner at (x1,y1). Note: (x0,y0) is
* inside filled area, but (x1,y1) is below and to the right.
*/
bool nsfb_lplot_fill(int x0, int y0, int x1, int y1, nsfb_colour_t c);
/** Plots a line.
*
* Draw a line from (x0,y0) to (x1,y1). Coordinates are at centre of line
* width/thickness.
*/
bool nsfb_lplot_line(int x0, int y0, int x1, int y1, int line_width, nsfb_colour_t c, bool dotted, bool dashed);
/** Plots a filled polygon.
*
* Plots a filled polygon with straight lines between points. The lines around
* the edge of the ploygon are not plotted. The polygon is filled with a
* non-zero winding rule.
*
*/
bool nsfb_lplot_polygon(const int *p, unsigned int n, nsfb_colour_t fillc);
/** Plots a circle.
*/
bool nsfb_lplot_disc(int x, int y, int radius, nsfb_colour_t c, bool filled);
/** Plots an arc.
*
* around (x,y), from anticlockwise from angle1 to angle2. Angles are measured
* anticlockwise from horizontal, in degrees.
*/
bool nsfb_lplot_arc(int x, int y, int radius, int angle1, int angle2, nsfb_colour_t c);
#endif /* _LIBNSFB_LEGACY_PLOT_H */
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