plotters.cpp File Reference

BeOS/Haiku implementation target independent plotting. More...

#include <math.h>
#include <BeBuild.h>
#include <Bitmap.h>
#include <GraphicsDefs.h>
#include <Region.h>
#include <View.h>
#include <Shape.h>
#include "utils/log.h"
#include "utils/utils.h"
#include "utils/nsoption.h"
#include "utils/nsurl.h"
#include "netsurf/plotters.h"
#include "beos/font.h"
#include "beos/gui.h"
#include "beos/plotters.h"
#include "beos/bitmap.h"

Include dependency graph for plotters.cpp:

Go to the source code of this file.

Macros
#define	__STDBOOL_H__   1

Functions
BView *	nsbeos_current_gc (void)
BView *	nsbeos_current_gc_lock (void)
void	nsbeos_current_gc_unlock (void)
void	nsbeos_current_gc_set (BView *view)
static nserror	nsbeos_plot_bbitmap (int x, int y, int width, int height, BBitmap *b, colour bg)
static BPoint	transform_pt (float x, float y, const float transform[6])
rgb_color	nsbeos_rgb_colour (colour c)
void	nsbeos_set_colour (colour c)
void	nsbeos_plot_caret (int x, int y, int h)
	Plot a caret. More...
static nserror	nsbeos_plot_clip (const struct redraw_context *ctx, const struct rect *ns_clip)
	Sets a clip rectangle for subsequent plot operations. More...
static nserror	nsbeos_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	nsbeos_plot_disc (const struct redraw_context *ctx, const plot_style_t *style, int x, int y, int radius)
	Plots a circle. More...
static nserror	nsbeos_plot_line (const struct redraw_context *ctx, const plot_style_t *style, const struct rect *line)
	Plots a line. More...
static nserror	nsbeos_plot_rectangle (const struct redraw_context *ctx, const plot_style_t *style, const struct rect *nsrect)
	Plots a rectangle. More...
static nserror	nsbeos_plot_polygon (const struct redraw_context *ctx, const plot_style_t *style, const int *p, unsigned int n)
	Plot a polygon. More...
static nserror	nsbeos_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	nsbeos_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	nsbeos_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
BView *	current_view
static const pattern	kDottedPattern
static const pattern	kDashedPattern
static const rgb_color	kBlackColor
const struct plotter_table	nsbeos_plotters
	beos plotter operation table More...

Detailed Description

BeOS/Haiku implementation target independent plotting.

Definition in file plotters.cpp.

Macro Definition Documentation

__STDBOOL_H__

#define __STDBOOL_H__   1

Definition at line 26 of file plotters.cpp.

Function Documentation

nsbeos_current_gc()

BView * nsbeos_current_gc

(

void

)

Definition at line 70 of file plotters.cpp.

References current_view.

Referenced by bitmap_render(), nsbeos_plot_arc(), nsbeos_plot_bbitmap(), nsbeos_plot_bitmap(), nsbeos_plot_caret(), nsbeos_plot_clip(), nsbeos_plot_disc(), nsbeos_plot_line(), nsbeos_plot_path(), nsbeos_plot_polygon(), nsbeos_plot_rectangle(), nsbeos_set_colour(), and nsfont_paint().

Here is the caller graph for this function:

nsbeos_current_gc_lock()

BView * nsbeos_current_gc_lock

(

void

)

Definition at line 76 of file plotters.cpp.

References current_view, and view.

nsbeos_current_gc_set()

void nsbeos_current_gc_set

(

BView *

view

)

Definition at line 93 of file plotters.cpp.

References current_view, and view.

Referenced by bitmap_render(), gui_window_remove_caret(), nsbeos_redraw_caret(), and nsbeos_window_expose_event().

Here is the caller graph for this function:

nsbeos_current_gc_unlock()

void nsbeos_current_gc_unlock

(

void

)

Definition at line 85 of file plotters.cpp.

References current_view.

nsbeos_plot_arc()

static nserror nsbeos_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 266 of file plotters.cpp.

References beos_warn_user(), plot_style_s::fill_colour, nsbeos_current_gc(), nsbeos_set_colour(), NSERROR_INVALID, NSERROR_OK, and view.

Here is the call graph for this function:

nsbeos_plot_bbitmap()

static nserror nsbeos_plot_bbitmap ( int  x, int  y, int  width, int  height, BBitmap *  b, colour  bg  )

static

Definition at line 101 of file plotters.cpp.

References beos_warn_user(), height, nsbeos_current_gc(), NSERROR_INVALID, NSERROR_OK, view, and width.

Referenced by nsbeos_plot_bitmap().

Here is the call graph for this function:

Here is the caller graph for this function:

nsbeos_plot_bitmap()

static nserror nsbeos_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 624 of file plotters.cpp.

References beos_warn_user(), BITMAPF_REPEAT_X, BITMAPF_REPEAT_Y, cliprect, height, nsbeos_bitmap_get_pretile_x(), nsbeos_bitmap_get_pretile_xy(), nsbeos_bitmap_get_pretile_y(), nsbeos_bitmap_get_primary(), nsbeos_current_gc(), nsbeos_plot_bbitmap(), NSERROR_INVALID, NSERROR_OK, view, and width.

Here is the call graph for this function:

nsbeos_plot_caret()

void nsbeos_plot_caret	(	int	x,
		int	y,
		int	h
	)

Plot a caret.

It is assumed that the plotters have been set up.

Definition at line 194 of file plotters.cpp.

References B_DOCUMENT_TEXT_COLOR, kBlackColor, nsbeos_current_gc(), and view.

Referenced by nsbeos_window_expose_event().

Here is the call graph for this function:

Here is the caller graph for this function:

nsbeos_plot_clip()

static nserror nsbeos_plot_clip ( const struct redraw_context *  ctx, const struct rect *  ns_clip  )

static

Sets a clip rectangle for subsequent plot operations.

Parameters

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

Returns

NSERROR_OK on success else error code.

Definition at line 225 of file plotters.cpp.

References beos_warn_user(), clip(), nsbeos_current_gc(), NSERROR_INVALID, NSERROR_OK, view, rect::x0, rect::x1, rect::y0, and rect::y1.

Here is the call graph for this function:

nsbeos_plot_disc()

static nserror nsbeos_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 304 of file plotters.cpp.

References beos_warn_user(), plot_style_s::fill_colour, plot_style_s::fill_type, nsbeos_current_gc(), nsbeos_set_colour(), NSERROR_INVALID, NSERROR_OK, PLOT_OP_TYPE_NONE, and view.

Here is the call graph for this function:

nsbeos_plot_line()

static nserror nsbeos_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.

< Solid colour

< Doted plot

< dashed plot

Definition at line 342 of file plotters.cpp.

References beos_warn_user(), kDashedPattern, kDottedPattern, line(), nsbeos_current_gc(), nsbeos_set_colour(), NSERROR_OK, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, PLOT_OP_TYPE_SOLID, plot_style_fixed_to_float, plot_style_s::stroke_colour, plot_style_s::stroke_type, plot_style_s::stroke_width, and view.

Here is the call graph for this function:

nsbeos_plot_path()

static nserror nsbeos_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 525 of file plotters.cpp.

References plot_style_s::fill_colour, NS_TRANSPARENT, nsbeos_current_gc(), nsbeos_rgb_colour(), NSERROR_INVALID, NSERROR_OK, NSLOG, plot_style_fixed_to_float, PLOTTER_PATH_BEZIER, PLOTTER_PATH_CLOSE, PLOTTER_PATH_LINE, PLOTTER_PATH_MOVE, plot_style_s::stroke_colour, plot_style_s::stroke_width, transform_pt(), and view.

Here is the call graph for this function:

nsbeos_plot_polygon()

static nserror nsbeos_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 479 of file plotters.cpp.

References beos_warn_user(), plot_style_s::fill_colour, NS_TRANSPARENT, nsbeos_current_gc(), nsbeos_set_colour(), NSERROR_INVALID, NSERROR_OK, and view.

Here is the call graph for this function:

nsbeos_plot_rectangle()

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

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.
nsrect	A rectangle defining the line to be drawn

Returns

NSERROR_OK on success else error code.

< Solid colour

< Doted plot

< dashed plot

Definition at line 401 of file plotters.cpp.

References beos_warn_user(), plot_style_s::fill_colour, plot_style_s::fill_type, kDashedPattern, kDottedPattern, nsbeos_current_gc(), nsbeos_set_colour(), NSERROR_INVALID, NSERROR_OK, PLOT_OP_TYPE_DASH, PLOT_OP_TYPE_DOT, PLOT_OP_TYPE_NONE, PLOT_OP_TYPE_SOLID, plot_style_fixed_to_float, plot_style_s::stroke_colour, plot_style_s::stroke_type, plot_style_s::stroke_width, view, rect::x0, rect::x1, rect::y0, and rect::y1.

Here is the call graph for this function:

nsbeos_plot_text()

static nserror nsbeos_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 721 of file plotters.cpp.

References NSERROR_INVALID, NSERROR_OK, nsfont_paint(), and text().

Here is the call graph for this function:

nsbeos_rgb_colour()

rgb_color nsbeos_rgb_colour

(

colour

c

)

Definition at line 169 of file plotters.cpp.

References NS_TRANSPARENT.

Referenced by gui_set_clipboard(), nsbeos_plot_path(), nsbeos_set_colour(), and nsfont_paint().

Here is the caller graph for this function:

nsbeos_set_colour()

void nsbeos_set_colour

(

colour

c

)

Definition at line 181 of file plotters.cpp.

References nsbeos_current_gc(), nsbeos_rgb_colour(), and view.

Referenced by nsbeos_plot_arc(), nsbeos_plot_disc(), nsbeos_plot_line(), nsbeos_plot_polygon(), and nsbeos_plot_rectangle().

Here is the call graph for this function:

Here is the caller graph for this function:

transform_pt()

static BPoint transform_pt ( float  x, float  y, const float  transform[6]  )

static

Definition at line 151 of file plotters.cpp.

Referenced by nsbeos_plot_path().

Here is the caller graph for this function:

Variable Documentation

current_view

BView* current_view

Definition at line 47 of file plotters.cpp.

Referenced by nsbeos_current_gc(), nsbeos_current_gc_lock(), nsbeos_current_gc_set(), and nsbeos_current_gc_unlock().

kBlackColor

const rgb_color kBlackColor

static

Initial value:

= {
        0, 0, 0, 255
}

Definition at line 62 of file plotters.cpp.

Referenced by nsbeos_plot_caret().

kDashedPattern

const pattern kDashedPattern

static

Initial value:

= {
        0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0x33, 0x33
}

Definition at line 58 of file plotters.cpp.

Referenced by nsbeos_plot_line(), and nsbeos_plot_rectangle().

kDottedPattern

const pattern kDottedPattern

static

Initial value:

= {
        0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa, 0x55, 0xaa
}

Definition at line 55 of file plotters.cpp.

Referenced by nsbeos_plot_line(), and nsbeos_plot_rectangle().

nsbeos_plotters

const struct plotter_table nsbeos_plotters

Initial value:

= {
        nsbeos_plot_clip,
        nsbeos_plot_arc,
        nsbeos_plot_disc,
        nsbeos_plot_line,
        nsbeos_plot_rectangle,
        nsbeos_plot_polygon,
        nsbeos_plot_path,
        nsbeos_plot_bitmap,
        nsbeos_plot_text,
        NULL, 
        NULL, 
        NULL, 
        true 
}

beos plotter operation table

Definition at line 739 of file plotters.cpp.

Referenced by bitmap_render(), and nsbeos_window_expose_event().