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Sweden-Number/graphics/psdrv/graphics.c

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/*
* PostScript driver graphics functions
*
* Copyright 1998 Huw D M Davies
*
*/
#include <string.h>
#include <math.h>
#include "config.h"
#if defined(HAVE_FLOAT_H)
#include <float.h>
#endif
#if !defined(PI)
#define PI M_PI
#endif
#include "psdrv.h"
#include "debug.h"
#include "winspool.h"
DEFAULT_DEBUG_CHANNEL(psdrv)
/**********************************************************************
* PSDRV_MoveToEx
*/
BOOL PSDRV_MoveToEx(DC *dc, INT x, INT y, LPPOINT pt)
{
TRACE(psdrv, "%d %d\n", x, y);
if (pt)
{
pt->x = dc->w.CursPosX;
pt->y = dc->w.CursPosY;
}
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* PSDRV_LineTo
*/
BOOL PSDRV_LineTo(DC *dc, INT x, INT y)
{
TRACE(psdrv, "%d %d\n", x, y);
PSDRV_SetPen(dc);
PSDRV_WriteMoveTo(dc, XLPTODP(dc, dc->w.CursPosX),
YLPTODP(dc, dc->w.CursPosY));
PSDRV_WriteLineTo(dc, XLPTODP(dc, x), YLPTODP(dc, y));
PSDRV_WriteStroke(dc);
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* PSDRV_Rectangle
*/
BOOL PSDRV_Rectangle( DC *dc, INT left, INT top, INT right,
INT bottom )
{
INT width = XLSTODS(dc, right - left);
INT height = YLSTODS(dc, bottom - top);
TRACE(psdrv, "%d %d - %d %d\n", left, top, right, bottom);
PSDRV_WriteRectangle(dc, XLPTODP(dc, left), YLPTODP(dc, top),
width, height);
PSDRV_Brush(dc,0);
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_RoundRect
*/
BOOL PSDRV_RoundRect( DC *dc, INT left, INT top, INT right,
INT bottom, INT ell_width, INT ell_height )
{
left = XLPTODP( dc, left );
right = XLPTODP( dc, right );
top = YLPTODP( dc, top );
bottom = YLPTODP( dc, bottom );
ell_width = XLSTODS( dc, ell_width );
ell_height = YLSTODS( dc, ell_height );
if( left > right ) { INT tmp = left; left = right; right = tmp; }
if( top > bottom ) { INT tmp = top; top = bottom; bottom = tmp; }
if(ell_width > right - left) ell_width = right - left;
if(ell_height > bottom - top) ell_height = bottom - top;
PSDRV_WriteMoveTo( dc, left, top + ell_height/2 );
PSDRV_WriteArc( dc, left + ell_width/2, top + ell_height/2, ell_width,
ell_height, 90.0, 180.0);
PSDRV_WriteLineTo( dc, right - ell_width/2, top );
PSDRV_WriteArc( dc, right - ell_width/2, top + ell_height/2, ell_width,
ell_height, 0.0, 90.0);
PSDRV_WriteLineTo( dc, right, bottom - ell_height/2 );
PSDRV_WriteArc( dc, right - ell_width/2, bottom - ell_height/2, ell_width,
ell_height, -90.0, 0.0);
PSDRV_WriteLineTo( dc, right - ell_width/2, bottom);
PSDRV_WriteArc( dc, left + ell_width/2, bottom - ell_height/2, ell_width,
ell_height, 180.0, -90.0);
PSDRV_WriteClosePath( dc );
PSDRV_Brush(dc,0);
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_DrawArc
*
* Does the work of Arc, Chord and Pie. lines is 0, 1 or 2 respectively.
*/
static BOOL PSDRV_DrawArc( DC *dc, INT left, INT top,
INT right, INT bottom,
INT xstart, INT ystart,
INT xend, INT yend,
int lines )
{
INT x, y, h, w;
double start_angle, end_angle, ratio;
x = XLPTODP(dc, (left + right)/2);
y = YLPTODP(dc, (top + bottom)/2);
w = XLSTODS(dc, (right - left));
h = YLSTODS(dc, (bottom - top));
if(w < 0) w = -w;
if(h < 0) h = -h;
ratio = ((double)w)/h;
/* angle is the angle after the rectangle is transformed to a square and is
measured anticlockwise from the +ve x-axis */
start_angle = atan2((double)(y - ystart) * ratio, (double)(xstart - x));
end_angle = atan2((double)(y - yend) * ratio, (double)(xend - x));
start_angle *= 180.0 / PI;
end_angle *= 180.0 / PI;
if(lines == 2) /* pie */
PSDRV_WriteMoveTo(dc, x, y);
PSDRV_WriteArc(dc, x, y, w, h, start_angle, end_angle);
if(lines == 1 || lines == 2) { /* chord or pie */
PSDRV_WriteClosePath(dc);
PSDRV_Brush(dc,0);
}
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_Arc
*/
BOOL PSDRV_Arc( DC *dc, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return PSDRV_DrawArc( dc, left, top, right, bottom, xstart, ystart,
xend, yend, 0 );
}
/***********************************************************************
* PSDRV_Chord
*/
BOOL PSDRV_Chord( DC *dc, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return PSDRV_DrawArc( dc, left, top, right, bottom, xstart, ystart,
xend, yend, 1 );
}
/***********************************************************************
* PSDRV_Pie
*/
BOOL PSDRV_Pie( DC *dc, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return PSDRV_DrawArc( dc, left, top, right, bottom, xstart, ystart,
xend, yend, 2 );
}
/***********************************************************************
* PSDRV_Ellipse
*/
BOOL PSDRV_Ellipse( DC *dc, INT left, INT top, INT right, INT bottom)
{
INT x, y, w, h;
TRACE(psdrv, "%d %d - %d %d\n", left, top, right, bottom);
x = XLPTODP(dc, (left + right)/2);
y = YLPTODP(dc, (top + bottom)/2);
w = XLSTODS(dc, (right - left));
h = YLSTODS(dc, (bottom - top));
PSDRV_WriteArc(dc, x, y, w, h, 0.0, 360.0);
PSDRV_WriteClosePath(dc);
PSDRV_Brush(dc,0);
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_PolyPolyline
*/
BOOL PSDRV_PolyPolyline( DC *dc, const POINT* pts, const DWORD* counts,
DWORD polylines )
{
DWORD polyline, line;
const POINT* pt;
TRACE(psdrv, "\n");
pt = pts;
for(polyline = 0; polyline < polylines; polyline++) {
PSDRV_WriteMoveTo(dc, XLPTODP(dc, pt->x), YLPTODP(dc, pt->y));
pt++;
for(line = 1; line < counts[polyline]; line++) {
PSDRV_WriteLineTo(dc, XLPTODP(dc, pt->x), YLPTODP(dc, pt->y));
pt++;
}
}
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_Polyline
*/
BOOL PSDRV_Polyline( DC *dc, const POINT* pt, INT count )
{
return PSDRV_PolyPolyline( dc, pt, (LPDWORD) &count, 1 );
}
/***********************************************************************
* PSDRV_PolyPolygon
*/
BOOL PSDRV_PolyPolygon( DC *dc, const POINT* pts, const INT* counts,
UINT polygons )
{
DWORD polygon, line;
const POINT* pt;
TRACE(psdrv, "\n");
pt = pts;
for(polygon = 0; polygon < polygons; polygon++) {
PSDRV_WriteMoveTo(dc, XLPTODP(dc, pt->x), YLPTODP(dc, pt->y));
pt++;
for(line = 1; line < counts[polygon]; line++) {
PSDRV_WriteLineTo(dc, XLPTODP(dc, pt->x), YLPTODP(dc, pt->y));
pt++;
}
PSDRV_WriteClosePath(dc);
}
if(dc->w.polyFillMode == ALTERNATE)
PSDRV_Brush(dc, 1);
else /* WINDING */
PSDRV_Brush(dc, 0);
PSDRV_SetPen(dc);
PSDRV_WriteStroke(dc);
return TRUE;
}
/***********************************************************************
* PSDRV_Polygon
*/
BOOL PSDRV_Polygon( DC *dc, const POINT* pt, INT count )
{
return PSDRV_PolyPolygon( dc, pt, &count, 1 );
}
/***********************************************************************
* PSDRV_SetPixel
*/
COLORREF PSDRV_SetPixel( DC *dc, INT x, INT y, COLORREF color )
{
PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
PSCOLOR pscolor;
x = XLPTODP(dc, x);
y = YLPTODP(dc, y);
PSDRV_WriteRectangle( dc, x, y, 0, 0 );
PSDRV_CreateColor( physDev, &pscolor, color );
PSDRV_WriteSetColor( dc, &pscolor );
PSDRV_WriteFill( dc );
return color;
}
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