plot.c File Reference

#include <stdio.h>
#include "utils/utils.h"
#include "utils/errors.h"
#include "netsurf/plotters.h"
#include "monkey/output.h"

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Functions
static nserror	monkey_plot_clip (const struct redraw_context *ctx, const struct rect *clip)
	Sets a clip rectangle for subsequent plot operations. More...
static nserror	monkey_plot_arc (const struct redraw_context *ctx, const plot_style_t *style, int x, int y, int radius, int angle1, int angle2)
	Plots an arc. More...
static nserror	monkey_plot_disc (const struct redraw_context *ctx, const plot_style_t *style, int x, int y, int radius)
	Plots a circle. More...
static nserror	monkey_plot_line (const struct redraw_context *ctx, const plot_style_t *style, const struct rect *line)
	Plots a line. More...
static nserror	monkey_plot_rectangle (const struct redraw_context *ctx, const plot_style_t *style, const struct rect *rect)
	Plots a rectangle. More...
static nserror	monkey_plot_polygon (const struct redraw_context *ctx, const plot_style_t *style, const int *p, unsigned int n)
	Plot a polygon. More...
static nserror	monkey_plot_path (const struct redraw_context *ctx, const plot_style_t *pstyle, const float *p, unsigned int n, const float transform[6])
	Plots a path. More...
static nserror	monkey_plot_bitmap (const struct redraw_context *ctx, struct bitmap *bitmap, int x, int y, int width, int height, colour bg, bitmap_flags_t flags)
	Plot a bitmap. More...
static nserror	monkey_plot_text (const struct redraw_context *ctx, const struct plot_font_style *fstyle, int x, int y, const char *text, size_t length)
	Text plotting. More...

Variables
static const struct plotter_table	plotters
	monkey plotter operations table More...
const struct plotter_table *	monkey_plotters = &plotters

Function Documentation

monkey_plot_arc()

static nserror monkey_plot_arc ( const struct redraw_context *  ctx, const plot_style_t *  style, int  x, int  y, int  radius, int  angle1, int  angle2  )

static

Plots an arc.

plot an arc segment around (x,y), anticlockwise from angle1 to angle2. Angles are measured anticlockwise from horizontal, in degrees.

Parameters

ctx	The current redraw context.
style	Style controlling the arc plot.
x	The x coordinate of the arc.
y	The y coordinate of the arc.
radius	The radius of the arc.
angle1	The start angle of the arc.
angle2	The finish angle of the arc.

Returns

NSERROR_OK on success else error code.

Definition at line 61 of file plot.c.

References MOUT_PLOT, moutf(), and NSERROR_OK.

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monkey_plot_bitmap()

static nserror monkey_plot_bitmap ( const struct redraw_context *  ctx, struct bitmap *  bitmap, int  x, int  y, int  width, int  height, colour  bg, bitmap_flags_t  flags  )

static

Plot a bitmap.

Tiled plot of a bitmap image. (x,y) gives the top left coordinate of an explicitly placed tile. From this tile the image can repeat in all four directions – up, down, left and right – to the extents given by the current clip rectangle.

The bitmap_flags say whether to tile in the x and y directions. If not tiling in x or y directions, the single image is plotted. The width and height give the dimensions the image is to be scaled to.

Parameters

ctx	The current redraw context.
bitmap	The bitmap to plot
x	The x coordinate to plot the bitmap
y	The y coordiante to plot the bitmap
width	The width of area to plot the bitmap into
height	The height of area to plot the bitmap into
bg	the background colour to alpha blend into
flags	the flags controlling the type of plot operation

Returns

NSERROR_OK on success else error code.

Definition at line 215 of file plot.c.

References height, MOUT_PLOT, moutf(), NSERROR_OK, and width.

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monkey_plot_clip()

static nserror monkey_plot_clip ( const struct redraw_context *  ctx, const struct rect *  clip  )

static

Sets a clip rectangle for subsequent plot operations.

Parameters

ctx	The current redraw context.
clip	The rectangle to limit all subsequent plot operations within.

Returns

NSERROR_OK on success else error code.

Definition at line 36 of file plot.c.

References clip(), MOUT_PLOT, moutf(), and NSERROR_OK.

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monkey_plot_disc()

static nserror monkey_plot_disc ( const struct redraw_context *  ctx, const plot_style_t *  style, int  x, int  y, int  radius  )

static

Plots a circle.

Plot a circle centered on (x,y), which is optionally filled.

Parameters

ctx	The current redraw context.
style	Style controlling the circle plot.
x	x coordinate of circle centre.
y	y coordinate of circle centre.
radius	circle radius.

Returns

NSERROR_OK on success else error code.

Definition at line 84 of file plot.c.

References MOUT_PLOT, moutf(), and NSERROR_OK.

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monkey_plot_line()

static nserror monkey_plot_line ( const struct redraw_context *  ctx, const plot_style_t *  style, const struct rect *  line  )

static

Plots a line.

plot a line from (x0,y0) to (x1,y1). Coordinates are at centre of line width/thickness.

Parameters

ctx	The current redraw context.
style	Style controlling the line plot.
line	A rectangle defining the line to be drawn

Returns

NSERROR_OK on success else error code.

Definition at line 105 of file plot.c.

References line(), MOUT_PLOT, moutf(), and NSERROR_OK.

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monkey_plot_path()

static nserror monkey_plot_path ( const struct redraw_context *  ctx, const plot_style_t *  pstyle, const float *  p, unsigned int  n, const float  transform[6]  )

static

Plots a path.

Path plot consisting of cubic Bezier curves. Line and fill colour is controlled by the plot style.

Parameters

ctx	The current redraw context.
pstyle	Style controlling the path plot.
p	elements of path
n	nunber of elements on path
transform	A transform to apply to the path.

Returns

NSERROR_OK on success else error code.

Definition at line 178 of file plot.c.

References MOUT_PLOT, moutf(), NSERROR_OK, plot_style_fixed_to_float, and plot_style_s::stroke_width.

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monkey_plot_polygon()

static nserror monkey_plot_polygon ( const struct redraw_context *  ctx, const plot_style_t *  style, const int *  p, unsigned int  n  )

static

Plot a 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 the non-zero winding rule.

Parameters

ctx	The current redraw context.
style	Style controlling the polygon plot.
p	verticies of polygon
n	number of verticies.

Returns

NSERROR_OK on success else error code.

Definition at line 154 of file plot.c.

References MOUT_PLOT, moutf(), and NSERROR_OK.

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monkey_plot_rectangle()

static nserror monkey_plot_rectangle ( const struct redraw_context *  ctx, const plot_style_t *  style, const struct rect *  rect  )

static

Plots a rectangle.

The rectangle can be filled an outline or both controlled by the plot style The line can be solid, dotted or dashed. Top left corner at (x0,y0) and rectangle has given width and height.

Parameters

ctx	The current redraw context.
style	Style controlling the rectangle plot.
rect	A rectangle defining the line to be drawn

Returns

NSERROR_OK on success else error code.

Definition at line 129 of file plot.c.

References MOUT_PLOT, moutf(), NSERROR_OK, rect::x0, rect::x1, rect::y0, and rect::y1.

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monkey_plot_text()

static nserror monkey_plot_text ( const struct redraw_context *  ctx, const struct plot_font_style *  fstyle, int  x, int  y, const char *  text, size_t  length  )

static

Text plotting.

Parameters

ctx	The current redraw context.
fstyle	plot style for this text
x	x coordinate
y	y coordinate
text	UTF-8 string to plot
length	length of string, in bytes

Returns

NSERROR_OK on success else error code.

Definition at line 241 of file plot.c.

References MOUT_PLOT, moutf(), NSERROR_OK, and text().

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Variable Documentation

monkey_plotters

const struct plotter_table* monkey_plotters = &plotters

Definition at line 267 of file plot.c.

Referenced by monkey_window_handle_redraw().

plotters

const struct plotter_table plotters

static

Initial value:

= {
        .clip = monkey_plot_clip,
        .arc = monkey_plot_arc,
        .disc = monkey_plot_disc,
        .line = monkey_plot_line,
        .rectangle = monkey_plot_rectangle,
        .polygon = monkey_plot_polygon,
        .path = monkey_plot_path,
        .bitmap = monkey_plot_bitmap,
        .text = monkey_plot_text,
        .option_knockout = true,
}

monkey plotter operations table

Definition at line 254 of file plot.c.