o_line.c File Reference

#include <config.h>
#include <stdio.h>
#include <math.h>
#include "gschem.h"

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Functions
void	o_line_draw (GSCHEM_TOPLEVEL *w_current, OBJECT *o_current)
	Draw a line on screen.
void	o_line_invalidate_rubber (GSCHEM_TOPLEVEL *w_current)
void	o_line_draw_place (GSCHEM_TOPLEVEL *w_current, int dx, int dy, OBJECT *o_current)
	Draw a line object after applying translation.
void	o_line_start (GSCHEM_TOPLEVEL *w_current, int w_x, int w_y)
	Start process to input a new line.
void	o_line_end (GSCHEM_TOPLEVEL *w_current, int w_x, int w_y)
	End the input of a line.
void	o_line_motion (GSCHEM_TOPLEVEL *w_current, int w_x, int w_y)
	Draw temporary line while dragging end.
void	o_line_draw_rubber (GSCHEM_TOPLEVEL *w_current)
	Draw line from GSCHEM_TOPLEVEL object.
void	o_line_draw_grips (GSCHEM_TOPLEVEL *w_current, OBJECT *o_current)
	Draw grip marks on line.
int	o_line_visible (GSCHEM_TOPLEVEL *w_current, LINE *line, int *x1, int *y1, int *x2, int *y2)

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Function Documentation

void o_line_draw	(	GSCHEM_TOPLEVEL *	w_current,
		OBJECT *	o_current
	)

Function Description

This function is used to draw a line on screen. The line is described in the object which is referred by o_current. The line is displayed according to the current state, described in the GSCHEM_TOPLEVEL object pointed by w_current.

It first checks if the object is valid or not. If not it returns and do not output anything. That should never happen though.

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	o_current	The line OBJECT to draw.

Definition at line 44 of file o_line.c.

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void o_line_invalidate_rubber

(

GSCHEM_TOPLEVEL *

w_current

)

Todo:

Finish function documentation

Function Description

Definition at line 78 of file o_line.c.

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void o_line_draw_place	(	GSCHEM_TOPLEVEL *	w_current,
		int	dx,
		int	dy,
		OBJECT *	o_current
	)

Function Description

This function is used to draw the line object described by *o_current after applying a translation on the two directions of dx and dy in world units.

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	dx	Delta x coordinate for line.
[in]	dy	Delta y coordinate for line.
[in]	o_current	Line OBJECT to draw.

Definition at line 99 of file o_line.c.

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void o_line_start	(	GSCHEM_TOPLEVEL *	w_current,
		int	w_x,
		int	w_y
	)

Function Description

This function starts the process of interactively adding a line to the current sheet.

During all the process, the line is internally represented by the two ends of the line as (w_current->first_wx,w_current->first_wy) and (w_current->second_wx,w_current->second_wy).

A temporary line is drawn during the process with the selection color and changed according to the position of the mouse pointer.

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	w_x	Current x coordinate of pointer in world units.
[in]	w_y	Current y coordinate of pointer in world units.

Definition at line 129 of file o_line.c.

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void o_line_end	(	GSCHEM_TOPLEVEL *	w_current,
		int	w_x,
		int	w_y
	)

Function Description

This function ends the process of interactively adding a line to the current sheet.

It first erases the last temporary line displayed, calculates the corresponding world coordinates of the two ends of the line and finally adds a new initialized line object to the list of object of the current sheet.

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	w_x	(unused)
[in]	w_y	(unused)

Definition at line 153 of file o_line.c.

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void o_line_motion	(	GSCHEM_TOPLEVEL *	w_current,
		int	w_x,
		int	w_y
	)

Function Description

This function manages the erase/update/draw process of temporary line when modifying one end of the line. The line is described by four *w_current variables : the first end of the line is (first_wx,first_wy), the second end is (second_wx,second_wy). The first end is constant. The second end is updated to the (w_x,w_y).

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	w_x	Current x coordinate of pointer in world units.
[in]	w_y	Current y coordinate of pointer in world units.

Definition at line 196 of file o_line.c.

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void o_line_draw_rubber

(

GSCHEM_TOPLEVEL *

w_current

)

Function Description

This function draws a line with an exclusive or function over the sheet. The color of the box is SELECT_COLOR. The line is described by the two points (w_current->first_wx, w_current->first_wy) and (w_current->second_wx,w_current->second_wy).

Parameters:

[in]

w_current

The GSCHEM_TOPLEVEL object.

Definition at line 238 of file o_line.c.

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void o_line_draw_grips	(	GSCHEM_TOPLEVEL *	w_current,
		OBJECT *	o_current
	)

Function Description

This function draws the grips on the line object o_current.

A line has a grip at each end.

Parameters:

[in]	w_current	The GSCHEM_TOPLEVEL object.
[in]	o_current	Line OBJECT to draw grip points on.

Definition at line 258 of file o_line.c.

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int o_line_visible	(	GSCHEM_TOPLEVEL *	w_current,
		LINE *	line,
		int *	x1,
		int *	y1,
		int *	x2,
		int *	y2
	)

Function Description

Parameters:

[in]	w_current	The TOPLEVEL object.
[in]	line
[in]	x1
[in]	y1
[in]	x2
[in]	y2

Returns:

int

Definition at line 282 of file o_line.c.

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