scribble/inc/ink.h File Reference

#include <gtk/gtk.h>

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Classes
struct	_Ink
struct	_Stroke
struct	_InkPoint
Typedefs
typedef struct _Ink *	PtrInk
typedef struct _Stroke *	PtrStroke
typedef struct _InkPoint *	PtrInkPoint
typedef struct _Ink	Ink
typedef struct _Stroke	Stroke
typedef struct _InkPoint	InkPoint
Functions
PtrInk	construct_ink ()
void	destroy_ink (PtrInk ink)
PtrStroke	construct_stroke ()
PtrStroke	destroy_stroke (PtrStroke stroke)
PtrInkPoint	construct_point ()
PtrInkPoint	destroy_point (PtrInkPoint point)
unsigned char	ink_add_stroke (PtrInk ink, PtrStroke stroke)
int	get_num_of_strokes (PtrInk ink)
unsigned char	ink_add_point (PtrStroke stroke, PtrInkPoint point)
int	get_num_of_points (PtrStroke stroke)

---

Typedef Documentation

typedef struct _Ink Ink

typedef struct _InkPoint InkPoint

typedef struct _Ink* PtrInk

Copyright (C) 2005-2008 iRex Technologies B.V. All rights reserved.

Definition at line 33 of file ink.h.

typedef struct _InkPoint* PtrInkPoint

Definition at line 35 of file ink.h.

typedef struct _Stroke* PtrStroke

Definition at line 34 of file ink.h.

typedef struct _Stroke Stroke

---

Function Documentation

PtrInk construct_ink

(

)

Copyright (C) 2005-2008 iRex Technologies B.V. All rights reserved.

Definition at line 43 of file ink.c.

{
    PtrInk ink = NULL;

    ink = malloc (sizeof (Ink));
    if (ink)
        memset (ink, 0, sizeof (Ink));
  
    SB_INKPRINTF("return %p \n", ink);
    return ink;
}

PtrInkPoint construct_point

(

)

Definition at line 103 of file ink.c.

{
    PtrInkPoint point = NULL;

    point = malloc (sizeof (InkPoint));
    if (point)
        memset (point, 0, sizeof (InkPoint));

    SB_INKPRINTF("return %p \n", point);
    return point;
}

PtrStroke construct_stroke

(

)

Definition at line 70 of file ink.c.

{
    PtrStroke stroke = NULL;

    stroke = malloc (sizeof (Stroke));
    if (stroke)
        memset (stroke, 0, sizeof (Stroke));

  //init range
    stroke->min_x = stroke->min_y = INT_MAX;
    stroke->max_x = stroke->max_y = INT_MIN;
    SB_INKPRINTF("initial construct %p \n", stroke);
    return stroke;
}

void destroy_ink

(

PtrInk

ink

)

Definition at line 56 of file ink.c.

{
    PtrStroke stroke = NULL;
    if (ink == NULL)
        return;
    stroke = ink->firstStroke;
    while (stroke)
        stroke = destroy_stroke (stroke);

    SB_INKPRINTF("return (%p)\n", ink);
    free (ink);
}

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PtrInkPoint destroy_point

(

PtrInkPoint

point

)

Definition at line 116 of file ink.c.

{
    PtrInkPoint nextPoint = NULL;
    if (point == NULL)
        return NULL;
    nextPoint = point->nextPoint;

    SB_INKPRINTF("return %p \n", point);
    free (point);
    return nextPoint;
}

PtrStroke destroy_stroke

(

PtrStroke

stroke

)

Definition at line 86 of file ink.c.

{
    PtrInkPoint point = NULL;
    PtrStroke nextStroke = NULL;
    if (stroke == NULL)
        return NULL;
    nextStroke = stroke->nextStroke;
    point = stroke->firstPoint;
    while (point)
        point = destroy_point (point);

    SB_INKPRINTF("return(%p)\n", stroke);
    free (stroke);
    return nextStroke;
}

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int get_num_of_points

(

PtrStroke

stroke

)

Definition at line 189 of file ink.c.

{
    if (stroke == NULL)
        return 0;
    return stroke->nPoints;
}

int get_num_of_strokes

(

PtrInk

ink

)

Definition at line 152 of file ink.c.

{
    if (ink == NULL)
        return 0;
    return ink->nStrokes;
}

unsigned char ink_add_point	(	PtrStroke	stroke,
		PtrInkPoint	point
	)

Definition at line 161 of file ink.c.

{
    if (stroke == NULL || point == NULL)
    {
        SB_INKERRPRINTF("failed:incorrect arguments\n");
        return 0;
    }

    if (stroke->lastPoint == NULL)
    {
        stroke->lastPoint=stroke->firstPoint = point;
        stroke->nPoints = 1;
    }
    else
    {
        stroke->lastPoint=stroke->lastPoint->nextPoint = point;
        stroke->nPoints += 1;
    }

    //recompute the range, if saved, maybe duplicated when load from file!!
    if( point->x < stroke->min_x) stroke->min_x=point->x;
    if( point->x > stroke->max_x) stroke->max_x=point->x;
    if( point->y < stroke->min_y) stroke->min_y=point->y;
    if( point->y > stroke->max_y) stroke->max_y=point->y;

    return 1;
}

unsigned char ink_add_stroke	(	PtrInk	ink,
		PtrStroke	stroke
	)

Definition at line 130 of file ink.c.

{
    if (ink == NULL || stroke == NULL)
    {
        SB_INKERRPRINTF("failed:incorrect arguments\n");
        return 0;
    }

    if (ink->lastStroke == NULL)
    {
        ink->firstStroke = ink->lastStroke= stroke;
        ink->nStrokes = 1;
    }
    else
    {
        ink->lastStroke=ink->lastStroke->nextStroke = stroke;
        ink->nStrokes += 1;
    }
    return 1;
}