inc/pscmGfx.h File Reference

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Data Structures
struct	pscmGfx
Functions
pscmGfx *	pscmOpen (int width, int height, char *file)
void	pscmClose (struct pscmGfx **ppscm)
void	pscmSetClip (struct pscmGfx *pscm, int x, int y, int width, int height)
void	pscmUnclip (struct pscmGfx *pscm)
int	pscmFindColorIx (struct pscmGfx *pscm, int r, int g, int b)
void	pscmBox (struct pscmGfx *pscm, int x, int y, int width, int height, int colorIx)
void	pscmLine (struct pscmGfx *pscm, int x1, int y1, int x2, int y2, int colorIx)
void	pscmText (struct pscmGfx *pscm, int x, int y, int colorIx, MgFont *font, char *text)
void	pscmTextRight (struct pscmGfx *pscm, int x, int y, int width, int height, int color, MgFont *font, char *text)
void	pscmTextCentered (struct pscmGfx *pscm, int x, int y, int width, int height, int color, MgFont *font, char *text)

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Function Documentation

void pscmBox	(	struct pscmGfx *	pscm,
		int	x,
		int	y,
		int	width,
		int	height,
		int	colorIx
	)

Definition at line 222 of file pscmGfx.c.

References boxPscm, pscmBoxToPs(), and pscmSetColor().

Referenced by pscmDrawPoly(), and vgOpenPostScript().

{
/* When viewing whole chromosomes the browser tends
 * to draw the same little vertical tick over and
 * over again.  This tries to remove the worst of
 * the redundancy anyway. */

static int lx, ly, lw, lh, lc=-1;
if (x != lx || y != ly || width != lw || height != lh || color != lc || 
        pscm != boxPscm)
    {
    pscmSetColor(pscm, color);
    pscmBoxToPs(pscm, x, y, width, height);
    lx = x;
    ly = y;
    lw = width;
    lh = height;
    lc = color;
    boxPscm = pscm;
    }
}

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void pscmClose

(

struct pscmGfx **

ppscm

)

Definition at line 172 of file pscmGfx.c.

References colHashFree(), pscmGfx::colorHash, freez(), pscmGfx::ps, and psClose().

Referenced by vgOpenPostScript().

{
struct pscmGfx *pscm = *pPscm;
if (pscm != NULL)
    {
    psClose(&pscm->ps);
    colHashFree(&pscm->colorHash);
    freez(pPscm);
    }
}

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int pscmFindColorIx	(	struct pscmGfx *	pscm,
		int	r,
		int	g,
		int	b
	)

Definition at line 121 of file pscmGfx.c.

References colHashLookup(), pscmGfx::colorHash, pscmGfx::colorsUsed, errAbort(), colHashEl::ix, pscmAddColor(), and pscmClosestColor().

Referenced by pscmSetDefaultColorMap(), and vgOpenPostScript().

{
struct colHashEl *che;
if (r>255||g>255||b>255) 
    errAbort("RGB values out of range (0-255).  r:%d g:%d b:%d", r, g, b);
if ((che = colHashLookup(pscm->colorHash, r, g, b)) != NULL)
    return che->ix;
if (pscm->colorsUsed < 256)
    return pscmAddColor(pscm, r, g, b);
return pscmClosestColor(pscm, r, g, b);
}

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void pscmLine	(	struct pscmGfx *	pscm,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		int	colorIx
	)

Definition at line 253 of file pscmGfx.c.

References boxPscm, pscmGfx::ps, pscmSetColor(), psDrawBox(), and psDrawLine().

Referenced by pscmDrawPoly(), and vgOpenPostScript().

{
pscmSetColor(pscm, color);
if ((x1==x2) || (y1 == y2))
    {
    /* pad a half-pixel at each end */
    psDrawBox(pscm->ps, x1-0.5, y1-0.5, x2-x1+1, y2-y1+1);
    }
else
    {
    psDrawLine(pscm->ps, x1, y1, x2, y2);
    }
boxPscm = NULL;
}

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struct pscmGfx* pscmOpen	(	int	width,
		int	height,
		char *	file
	)			[read]

Definition at line 155 of file pscmGfx.c.

References AllocVar, pscmGfx::clipMaxX, pscmGfx::clipMaxY, pscmGfx::clipMinX, pscmGfx::clipMinY, colHashNew(), pscmGfx::colorHash, hashNew, pscmGfx::hints, pscmGfx::ps, pscmSetDefaultColorMap(), psOpen(), and psTranslate().

Referenced by vgOpenPostScript().

{
struct pscmGfx *pscm;

AllocVar(pscm);
pscm->ps = psOpen(file, width, height, 72.0 * 7.5, 0, 0);
psTranslate(pscm->ps,0.5,0.5);  /* translate all coordinates to pixel centers */
pscm->colorHash = colHashNew();
pscmSetDefaultColorMap(pscm);
pscm->clipMinX = pscm->clipMinY = 0;
pscm->clipMaxX = width;     
pscm->clipMaxY = height;
pscm->hints = hashNew(6);
return pscm;
}

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void pscmSetClip	(	struct pscmGfx *	pscm,
		int	x,
		int	y,
		int	width,
		int	height
	)

Definition at line 51 of file pscmGfx.c.

References pscmGfx::clipMaxX, pscmGfx::clipMaxY, pscmGfx::clipMinX, pscmGfx::clipMinY, pscmGfx::ps, and psClipRect().

Referenced by vgOpenPostScript().

{
double x2 = x + width;
double y2 = y + height;
pscm->clipMinX = x;
pscm->clipMinY = y;
pscm->clipMaxX = x2;     /* one beyond actual last pixel */
pscm->clipMaxY = y2;
/* adjust to pixel-centered coordinates */
x2 -= 1;
y2 -= 1;
double x1 = x;
double y1 = y;
/* pad a half-pixel all the way around the box */
x1 -= 0.5;
y1 -= 0.5;
x2 += 0.5;
y2 += 0.5;
psClipRect(pscm->ps, x1, y1, x2-x1, y2-y1);
}

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void pscmText	(	struct pscmGfx *	pscm,
		int	x,
		int	y,
		int	colorIx,
		MgFont *	font,
		char *	text
	)

Definition at line 305 of file pscmGfx.c.

References boxPscm, pscmGfx::ps, pscmSetColor(), pscmSetFont(), and psTextAt().

Referenced by vgOpenPostScript().

{
pscmSetColor(pscm, color);
pscmSetFont(pscm, font);
psTextAt(pscm->ps, x, y, text);
boxPscm = NULL;
}

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void pscmTextCentered	(	struct pscmGfx *	pscm,
		int	x,
		int	y,
		int	width,
		int	height,
		int	color,
		MgFont *	font,
		char *	text
	)

Definition at line 325 of file pscmGfx.c.

References boxPscm, pscmGfx::ps, pscmSetColor(), pscmSetFont(), and psTextCentered().

Referenced by vgOpenPostScript().

{
pscmSetColor(pscm, color);
pscmSetFont(pscm, font);
psTextCentered(pscm->ps, x, y, width, height, text);
boxPscm = NULL;
}

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void pscmTextRight	(	struct pscmGfx *	pscm,
		int	x,
		int	y,
		int	width,
		int	height,
		int	color,
		MgFont *	font,
		char *	text
	)

Definition at line 315 of file pscmGfx.c.

References boxPscm, pscmGfx::ps, pscmSetColor(), pscmSetFont(), and psTextRight().

Referenced by vgOpenPostScript().

{
pscmSetColor(pscm, color);
pscmSetFont(pscm, font);
psTextRight(pscm->ps, x, y, width, height, text);
boxPscm = NULL;
}

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void pscmUnclip

(

struct pscmGfx *

pscm

)

Definition at line 73 of file pscmGfx.c.

References pscmGfx::ps, psClipRect(), psGfx::userHeight, and psGfx::userWidth.

Referenced by vgOpenPostScript().

{
psClipRect(pscm->ps, 0, 0, pscm->ps->userWidth, pscm->ps->userHeight);
}

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