scribble/inc/ink_draw.h File Reference

#include "ink.h"

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Functions
void	draw_ink (PtrInk ink)
void	draw_stroke (PtrStroke stroke)
void	ink_draw_line (int x0, int y0, int x1, int y1)
int	ink_setDrawable (GdkDrawable *pDrawable)

---

Function Documentation

void draw_ink

(

PtrInk

ink

)

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

Definition at line 106 of file ink_draw.c.

{
    int nStrokes;
    PtrStroke stroke = NULL;
    if (ink == NULL)
        return;

    stroke = ink->firstStroke;
    nStrokes = get_num_of_strokes (ink);
    SB_INKPRINTF("nStrokes=%d\n", nStrokes);
    if (stroke == NULL || nStrokes <= 0)
    {
        return;
    }

    while (stroke)
    {
        draw_stroke (stroke);
        stroke = stroke->nextStroke;
    }
}

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void draw_stroke

(

PtrStroke

stroke

)

Definition at line 129 of file ink_draw.c.

{
    PtrInkPoint point = NULL;
    int nPoints;
    if (stroke == NULL)
        return;

    point = stroke->firstPoint;
    nPoints = get_num_of_points (stroke);
    if (point == NULL || nPoints <= 0)
        return;

    //select pensize
    setPenSizeAtrr(stroke->iPenSize);
    //set pen color
    setPenColorAttr(&stroke->gdkColor);

    SB_INKPRINTF("(nPoints=%d)\n", nPoints);
    // only one point in the stroke
    if ( 1==nPoints )
    {
        ink_draw_line(point->x, point->y,point->x, point->y);
        return;
    }

    while (point->nextPoint)
    {
        ink_draw_line(point->x, point->y, 
                      point->nextPoint->x,point->nextPoint->y);
        point = point->nextPoint;
    }
}

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void ink_draw_line	(	int	x0,
		int	y0,
		int	x1,
		int	y1
	)

Definition at line 95 of file ink_draw.c.

{
    GdkPoint points[2];
    points[0].x=(gint)x0;
    points[0].y=(gint)y0;
    points[1].x=(gint)x1;
    points[1].y=(gint)y1;
    gdk_draw_lines(pCurrDrawable,pCurrGDKGC,points,2);
}

int ink_setDrawable

(

GdkDrawable *

pDrawable

)

Definition at line 46 of file ink_draw.c.

{
    //avoiding duplicated efforts
    if(pCurrDrawable==pDrawable) return 0;

    pCurrDrawable=pDrawable;

    if(pCurrGDKGC)
        g_object_unref(pCurrGDKGC);

    pCurrGDKGC=gdk_gc_new(pDrawable);
    if(NULL==pCurrGDKGC)
    {
        SB_INKERRPRINTF("error when create GDKGC\n");
        return -1;
    }
    SB_INKPRINTF("create gdk gc successfully\n");
    return 0;
}