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Sweden-Number/graphics/x11drv/graphics.c

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/*
* X11 graphics driver graphics functions
*
* Copyright 1993,1994 Alexandre Julliard
*/
/*
* FIXME: none of these functions obey the GM_ADVANCED
* graphics mode
*/
#include <math.h>
#ifdef HAVE_FLOAT_H
# include <float.h>
#endif
#include <stdlib.h>
#include "ts_xlib.h"
#include "ts_xutil.h"
#include <X11/Intrinsic.h>
#ifndef PI
#define PI M_PI
#endif
#include <string.h>
#include "x11drv.h"
#include "bitmap.h"
#include "gdi.h"
#include "graphics.h"
#include "dc.h"
#include "bitmap.h"
#include "callback.h"
#include "metafile.h"
#include "palette.h"
#include "color.h"
#include "region.h"
#include "struct32.h"
#include "debug.h"
#include "xmalloc.h"
#define ABS(x) ((x)<0?(-(x)):(x))
/**********************************************************************
* X11DRV_MoveToEx
*/
BOOL32
X11DRV_MoveToEx(DC *dc,INT32 x,INT32 y,LPPOINT32 pt) {
if (pt)
{
pt->x = dc->w.CursPosX;
pt->y = dc->w.CursPosY;
}
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* X11DRV_LineTo
*/
BOOL32
X11DRV_LineTo( DC *dc, INT32 x, INT32 y )
{
if (DC_SetupGCForPen( dc ))
TSXDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + XLPTODP( dc, dc->w.CursPosX ),
dc->w.DCOrgY + YLPTODP( dc, dc->w.CursPosY ),
dc->w.DCOrgX + XLPTODP( dc, x ),
dc->w.DCOrgY + YLPTODP( dc, y ) );
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* GRAPH_DrawArc
*
* Helper functions for Arc(), Chord() and Pie().
* 'lines' is the number of lines to draw: 0 for Arc, 1 for Chord, 2 for Pie.
*
*/
static BOOL32
X11DRV_DrawArc( DC *dc, INT32 left, INT32 top, INT32 right,
INT32 bottom, INT32 xstart, INT32 ystart,
INT32 xend, INT32 yend, INT32 lines )
{
INT32 xcenter, ycenter, istart_angle, idiff_angle;
INT32 width, oldwidth, oldendcap;
double start_angle, end_angle;
XPoint points[4];
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
xstart = XLPTODP( dc, xstart );
ystart = YLPTODP( dc, ystart );
xend = XLPTODP( dc, xend );
yend = YLPTODP( dc, yend );
if (right < left) { INT32 tmp = right; right = left; left = tmp; }
if (bottom < top) { INT32 tmp = bottom; bottom = top; top = tmp; }
if ((left == right) || (top == bottom)
||(lines && ((right-left==1)||(bottom-top==1)))) return TRUE;
oldwidth = width = dc->u.x.pen.width;
oldendcap= dc->u.x.pen.endcap;
if (!width) width = 1;
if(dc->u.x.pen.style == PS_NULL) width = 0;
if ((dc->u.x.pen.style == PS_INSIDEFRAME))
{
if (2*width > (right-left)) width=(right-left + 1)/2;
if (2*width > (bottom-top)) width=(bottom-top + 1)/2;
left += width / 2;
right -= (width - 1) / 2;
top += width / 2;
bottom -= (width - 1) / 2;
}
if(width == 0) width=1; /* more accurate */
dc->u.x.pen.width=width;
dc->u.x.pen.endcap=PS_ENDCAP_SQUARE;
xcenter = (right + left) / 2;
ycenter = (bottom + top) / 2;
start_angle = atan2( (double)(ycenter-ystart)*(right-left),
(double)(xstart-xcenter)*(bottom-top) );
end_angle = atan2( (double)(ycenter-yend)*(right-left),
(double)(xend-xcenter)*(bottom-top) );
if ((xstart==xend)&&(ystart==yend))
{ /* A lazy program delivers xstart=xend=ystart=yend=0) */
start_angle = 0;
end_angle = 2* PI;
}
else /* notorious cases */
if ((start_angle == PI)&&( end_angle <0))
start_angle = - PI;
else
if ((end_angle == PI)&&( start_angle <0))
end_angle = - PI;
istart_angle = (INT32)(start_angle * 180 * 64 / PI + 0.5);
idiff_angle = (INT32)((end_angle - start_angle) * 180 * 64 / PI + 0.5);
if (idiff_angle <= 0) idiff_angle += 360 * 64;
/* Fill arc with brush if Chord() or Pie() */
if ((lines > 0) && DC_SetupGCForBrush( dc )) {
TSXSetArcMode( display, dc->u.x.gc, (lines==1) ? ArcChord : ArcPieSlice);
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, istart_angle, idiff_angle );
}
/* Draw arc and lines */
if (DC_SetupGCForPen( dc )){
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, istart_angle, idiff_angle );
if (lines) {
/* use the truncated values */
start_angle=(double)istart_angle*PI/64./180.;
end_angle=(double)(istart_angle+idiff_angle)*PI/64./180.;
/* calculate the endpoints and round correctly */
points[0].x = (int) floor(dc->w.DCOrgX + (right+left)/2.0 +
cos(start_angle) * (right-left-width*2+2) / 2. + 0.5);
points[0].y = (int) floor(dc->w.DCOrgY + (top+bottom)/2.0 -
sin(start_angle) * (bottom-top-width*2+2) / 2. + 0.5);
points[1].x = (int) floor(dc->w.DCOrgX + (right+left)/2.0 +
cos(end_angle) * (right-left-width*2+2) / 2. + 0.5);
points[1].y = (int) floor(dc->w.DCOrgY + (top+bottom)/2.0 -
sin(end_angle) * (bottom-top-width*2+2) / 2. + 0.5);
/* OK this stuff is optimized for Xfree86
* which is probably the most used server by
* wine users. Other X servers will not
* display correctly. (eXceed for instance)
* so if you feel you must change make sure that
* you either use Xfree86 or seperate your changes
* from these (compile switch or whatever)
*/
if (lines == 2) {
INT32 dx1,dy1;
points[3] = points[1];
points[1].x = dc->w.DCOrgX + xcenter;
points[1].y = dc->w.DCOrgY + ycenter;
points[2] = points[1];
dx1=points[1].x-points[0].x;
dy1=points[1].y-points[0].y;
if(((top-bottom) | -2) == -2)
if(dy1>0) points[1].y--;
if(dx1<0) {
if (((-dx1)*64)<=ABS(dy1)*37) points[0].x--;
if(((-dx1*9))<(dy1*16)) points[0].y--;
if( dy1<0 && ((dx1*9)) < (dy1*16)) points[0].y--;
} else {
if(dy1 < 0) points[0].y--;
if(((right-left) | -2) == -2) points[1].x--;
}
dx1=points[3].x-points[2].x;
dy1=points[3].y-points[2].y;
if(((top-bottom) | -2 ) == -2)
if(dy1 < 0) points[2].y--;
if( dx1<0){
if( dy1>0) points[3].y--;
if(((right-left) | -2) == -2 ) points[2].x--;
}else {
points[3].y--;
if( dx1 * 64 < dy1 * -37 ) points[3].x--;
}
lines++;
}
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, lines+1, CoordModeOrigin );
}
}
dc->u.x.pen.width=oldwidth;
dc->u.x.pen.endcap=oldendcap;
return TRUE;
}
/***********************************************************************
* X11DRV_Arc
*/
BOOL32
X11DRV_Arc( DC *dc, INT32 left, INT32 top, INT32 right, INT32 bottom,
INT32 xstart, INT32 ystart, INT32 xend, INT32 yend )
{
return X11DRV_DrawArc( dc, left, top, right, bottom,
xstart, ystart, xend, yend, 0 );
}
/***********************************************************************
* X11DRV_Pie
*/
BOOL32
X11DRV_Pie( DC *dc, INT32 left, INT32 top, INT32 right, INT32 bottom,
INT32 xstart, INT32 ystart, INT32 xend, INT32 yend )
{
return X11DRV_DrawArc( dc, left, top, right, bottom,
xstart, ystart, xend, yend, 2 );
}
/***********************************************************************
* X11DRV_Chord
*/
BOOL32
X11DRV_Chord( DC *dc, INT32 left, INT32 top, INT32 right, INT32 bottom,
INT32 xstart, INT32 ystart, INT32 xend, INT32 yend )
{
return X11DRV_DrawArc( dc, left, top, right, bottom,
xstart, ystart, xend, yend, 1 );
}
/***********************************************************************
* X11DRV_Ellipse
*/
BOOL32
X11DRV_Ellipse( DC *dc, INT32 left, INT32 top, INT32 right, INT32 bottom )
{
INT32 width, oldwidth;
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
if ((left == right) || (top == bottom)) return TRUE;
if (right < left) { INT32 tmp = right; right = left; left = tmp; }
if (bottom < top) { INT32 tmp = bottom; bottom = top; top = tmp; }
oldwidth = width = dc->u.x.pen.width;
if (!width) width = 1;
if(dc->u.x.pen.style == PS_NULL) width = 0;
if ((dc->u.x.pen.style == PS_INSIDEFRAME))
{
if (2*width > (right-left)) width=(right-left + 1)/2;
if (2*width > (bottom-top)) width=(bottom-top + 1)/2;
left += width / 2;
right -= (width - 1) / 2;
top += width / 2;
bottom -= (width - 1) / 2;
}
if(width == 0) width=1; /* more accurate */
dc->u.x.pen.width=width;
if (DC_SetupGCForBrush( dc ))
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, 0, 360*64 );
if (DC_SetupGCForPen( dc ))
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, 0, 360*64 );
dc->u.x.pen.width=oldwidth;
return TRUE;
}
/***********************************************************************
* X11DRV_Rectangle
*/
BOOL32
X11DRV_Rectangle(DC *dc, INT32 left, INT32 top, INT32 right, INT32 bottom)
{
INT32 width, oldwidth, oldjoinstyle;
TRACE(graphics, "(%d %d %d %d)\n",
left, top, right, bottom);
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
if ((left == right) || (top == bottom)) return TRUE;
if (right < left) { INT32 tmp = right; right = left; left = tmp; }
if (bottom < top) { INT32 tmp = bottom; bottom = top; top = tmp; }
oldwidth = width = dc->u.x.pen.width;
if (!width) width = 1;
if(dc->u.x.pen.style == PS_NULL) width = 0;
if ((dc->u.x.pen.style == PS_INSIDEFRAME))
{
if (2*width > (right-left)) width=(right-left + 1)/2;
if (2*width > (bottom-top)) width=(bottom-top + 1)/2;
left += width / 2;
right -= (width - 1) / 2;
top += width / 2;
bottom -= (width - 1) / 2;
}
if(width == 1) width=0;
dc->u.x.pen.width=width;
oldjoinstyle=dc->u.x.pen.linejoin;
if(dc->u.x.pen.type!=PS_GEOMETRIC)
dc->u.x.pen.linejoin=PS_JOIN_MITER;
if ((right > left + width) && (bottom > top + width))
{
if (DC_SetupGCForBrush( dc ))
TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + (width + 1) / 2,
dc->w.DCOrgY + top + (width + 1) / 2,
right-left-width-1, bottom-top-width-1);
}
if (DC_SetupGCForPen( dc ))
TSXDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1 );
dc->u.x.pen.width=oldwidth;
dc->u.x.pen.linejoin=oldjoinstyle;
return TRUE;
}
/***********************************************************************
* X11DRV_RoundRect
*/
BOOL32
X11DRV_RoundRect( DC *dc, INT32 left, INT32 top, INT32 right,
INT32 bottom, INT32 ell_width, INT32 ell_height )
{
INT32 width, oldwidth, oldendcap;
TRACE(graphics, "(%d %d %d %d %d %d\n",
left, top, right, bottom, ell_width, ell_height);
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
if ((left == right) || (top == bottom))
return TRUE;
ell_width = abs( ell_width * dc->vportExtX / dc->wndExtX );
ell_height = abs( ell_height * dc->vportExtY / dc->wndExtY );
/* Fix the coordinates */
if (right < left) { INT32 tmp = right; right = left; left = tmp; }
if (bottom < top) { INT32 tmp = bottom; bottom = top; top = tmp; }
oldwidth=width = dc->u.x.pen.width;
oldendcap = dc->u.x.pen.endcap;
if (!width) width = 1;
if(dc->u.x.pen.style == PS_NULL) width = 0;
if ((dc->u.x.pen.style == PS_INSIDEFRAME))
{
if (2*width > (right-left)) width=(right-left + 1)/2;
if (2*width > (bottom-top)) width=(bottom-top + 1)/2;
left += width / 2;
right -= (width - 1) / 2;
top += width / 2;
bottom -= (width - 1) / 2;
}
if(width == 0) width=1;
dc->u.x.pen.width=width;
dc->u.x.pen.endcap=PS_ENDCAP_SQUARE;
if (DC_SetupGCForBrush( dc ))
{
if (ell_width > (right-left) )
if (ell_height > (bottom-top) )
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right - left - 1, bottom - top - 1,
0, 360 * 64 );
else{
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right - left - 1, ell_height, 0, 180 * 64 );
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left,
dc->w.DCOrgY + bottom - ell_height - 1,
right - left - 1, ell_height, 180 * 64, 180 * 64 );
}
else if (ell_height > (bottom-top) ){
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
ell_width, bottom - top - 1, 90 * 64, 180 * 64 );
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width -1, dc->w.DCOrgY + top,
ell_width, bottom - top - 1, 270 * 64, 180 * 64 );
}else{
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
ell_width, ell_height, 90 * 64, 90 * 64 );
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left,
dc->w.DCOrgY + bottom - ell_height - 1,
ell_width, ell_height, 180 * 64, 90 * 64 );
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width - 1,
dc->w.DCOrgY + bottom - ell_height - 1,
ell_width, ell_height, 270 * 64, 90 * 64 );
TSXFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width - 1,
dc->w.DCOrgY + top,
ell_width, ell_height, 0, 90 * 64 );
}
if (ell_width < right - left)
{
TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + (ell_width + 1) / 2,
dc->w.DCOrgY + top + 1,
right - left - ell_width - 1,
(ell_height + 1) / 2 - 1);
TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + (ell_width + 1) / 2,
dc->w.DCOrgY + bottom - (ell_height) / 2 - 1,
right - left - ell_width - 1,
(ell_height) / 2 );
}
if (ell_height < bottom - top)
{
TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + 1,
dc->w.DCOrgY + top + (ell_height + 1) / 2,
right - left - 2,
bottom - top - ell_height - 1);
}
}
/* FIXME: this could be done with on X call
* more efficient and probably more correct
* on any X server: XDrawArcs will draw
* straight horizontal and vertical lines
* if width or height are zero.
*
* BTW this stuff is optimized for an Xfree86 server
* read the comments inside the X11DRV_DrawArc function
*/
if (DC_SetupGCForPen(dc)) {
if (ell_width > (right-left) )
if (ell_height > (bottom-top) )
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right - left - 1, bottom -top - 1, 0 , 360 * 64 );
else{
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right - left - 1, ell_height - 1, 0 , 180 * 64 );
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left,
dc->w.DCOrgY + bottom - ell_height,
right - left - 1, ell_height - 1, 180 * 64 , 180 * 64 );
}
else if (ell_height > (bottom-top) ){
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
ell_width - 1 , bottom - top - 1, 90 * 64 , 180 * 64 );
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width,
dc->w.DCOrgY + top,
ell_width - 1 , bottom - top - 1, 270 * 64 , 180 * 64 );
}else{
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
ell_width - 1, ell_height - 1, 90 * 64, 90 * 64 );
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + bottom - ell_height,
ell_width - 1, ell_height - 1, 180 * 64, 90 * 64 );
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width,
dc->w.DCOrgY + bottom - ell_height,
ell_width - 1, ell_height - 1, 270 * 64, 90 * 64 );
TSXDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width, dc->w.DCOrgY + top,
ell_width - 1, ell_height - 1, 0, 90 * 64 );
}
if (ell_width < right - left)
{
TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + ell_width / 2,
dc->w.DCOrgY + top,
dc->w.DCOrgX + right - (ell_width+1) / 2,
dc->w.DCOrgY + top);
TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + ell_width / 2 ,
dc->w.DCOrgY + bottom - 1,
dc->w.DCOrgX + right - (ell_width+1)/ 2,
dc->w.DCOrgY + bottom - 1);
}
if (ell_height < bottom - top)
{
TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - 1,
dc->w.DCOrgY + top + ell_height / 2,
dc->w.DCOrgX + right - 1,
dc->w.DCOrgY + bottom - (ell_height+1) / 2);
TSXDrawLine( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left,
dc->w.DCOrgY + top + ell_height / 2,
dc->w.DCOrgX + left,
dc->w.DCOrgY + bottom - (ell_height+1) / 2);
}
}
dc->u.x.pen.width=oldwidth;
dc->u.x.pen.endcap=oldendcap;
return TRUE;
}
/***********************************************************************
* X11DRV_SetPixel
*/
COLORREF
X11DRV_SetPixel( DC *dc, INT32 x, INT32 y, COLORREF color )
{
Pixel pixel;
x = dc->w.DCOrgX + XLPTODP( dc, x );
y = dc->w.DCOrgY + YLPTODP( dc, y );
pixel = COLOR_ToPhysical( dc, color );
TSXSetForeground( display, dc->u.x.gc, pixel );
TSXSetFunction( display, dc->u.x.gc, GXcopy );
TSXDrawPoint( display, dc->u.x.drawable, dc->u.x.gc, x, y );
/* inefficient but simple... */
return COLOR_ToLogical(pixel);
}
/***********************************************************************
* X11DRV_GetPixel
*/
COLORREF
X11DRV_GetPixel( DC *dc, INT32 x, INT32 y )
{
static Pixmap pixmap = 0;
XImage * image;
int pixel;
x = dc->w.DCOrgX + XLPTODP( dc, x );
y = dc->w.DCOrgY + YLPTODP( dc, y );
EnterCriticalSection( &X11DRV_CritSection );
if (dc->w.flags & DC_MEMORY)
{
image = XGetImage( display, dc->u.x.drawable, x, y, 1, 1,
AllPlanes, ZPixmap );
}
else
{
/* If we are reading from the screen, use a temporary copy */
/* to avoid a BadMatch error */
if (!pixmap) pixmap = XCreatePixmap( display, rootWindow,
1, 1, dc->w.bitsPerPixel );
XCopyArea( display, dc->u.x.drawable, pixmap, BITMAP_colorGC,
x, y, 1, 1, 0, 0 );
image = XGetImage( display, pixmap, 0, 0, 1, 1, AllPlanes, ZPixmap );
}
pixel = XGetPixel( image, 0, 0 );
XDestroyImage( image );
LeaveCriticalSection( &X11DRV_CritSection );
return COLOR_ToLogical(pixel);
}
/***********************************************************************
* X11DRV_PaintRgn
*/
BOOL32
X11DRV_PaintRgn( DC *dc, HRGN32 hrgn )
{
RECT32 box;
HRGN32 tmpVisRgn, prevVisRgn;
HDC32 hdc = dc->hSelf; /* FIXME: should not mix dc/hdc this way */
if (!(tmpVisRgn = CreateRectRgn32( 0, 0, 0, 0 ))) return FALSE;
/* Transform region into device co-ords */
if ( !REGION_LPTODP( hdc, tmpVisRgn, hrgn )
|| OffsetRgn32( tmpVisRgn, dc->w.DCOrgX, dc->w.DCOrgY ) == ERROR) {
DeleteObject32( tmpVisRgn );
return FALSE;
}
/* Modify visible region */
if (!(prevVisRgn = SaveVisRgn( hdc ))) {
DeleteObject32( tmpVisRgn );
return FALSE;
}
CombineRgn32( tmpVisRgn, prevVisRgn, tmpVisRgn, RGN_AND );
SelectVisRgn( hdc, tmpVisRgn );
DeleteObject32( tmpVisRgn );
/* Fill the region */
GetRgnBox32( dc->w.hGCClipRgn, &box );
if (DC_SetupGCForBrush( dc ))
TSXFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
box.left, box.top,
box.right-box.left, box.bottom-box.top );
/* Restore the visible region */
RestoreVisRgn( hdc );
return TRUE;
}
/**********************************************************************
* X11DRV_Polyline
*/
BOOL32
X11DRV_Polyline( DC *dc, LPPOINT32 pt, INT32 count )
{
INT32 oldwidth;
register int i;
XPoint *points;
if((oldwidth=dc->u.x.pen.width)==0) dc->u.x.pen.width=1;
points = (XPoint *) xmalloc (sizeof (XPoint) * (count));
for (i = 0; i < count; i++)
{
points[i].x = dc->w.DCOrgX + XLPTODP( dc, pt[i].x );
points[i].y = dc->w.DCOrgY + YLPTODP( dc, pt[i].y );
}
if (DC_SetupGCForPen ( dc ))
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, count, CoordModeOrigin );
free( points );
dc->u.x.pen.width=oldwidth;
return TRUE;
}
/**********************************************************************
* X11DRV_Polygon
*/
BOOL32
X11DRV_Polygon( DC *dc, LPPOINT32 pt, INT32 count )
{
register int i;
XPoint *points;
points = (XPoint *) xmalloc (sizeof (XPoint) * (count+1));
for (i = 0; i < count; i++)
{
points[i].x = dc->w.DCOrgX + XLPTODP( dc, pt[i].x );
points[i].y = dc->w.DCOrgY + YLPTODP( dc, pt[i].y );
}
points[count] = points[0];
if (DC_SetupGCForBrush( dc ))
TSXFillPolygon( display, dc->u.x.drawable, dc->u.x.gc,
points, count+1, Complex, CoordModeOrigin);
if (DC_SetupGCForPen ( dc ))
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, count+1, CoordModeOrigin );
free( points );
return TRUE;
}
/**********************************************************************
* X11DRV_PolyPolygon
*/
BOOL32
X11DRV_PolyPolygon( DC *dc, LPPOINT32 pt, LPINT32 counts, UINT32 polygons)
{
HRGN32 hrgn;
/* FIXME: The points should be converted to device coords before */
/* creating the region. But as CreatePolyPolygonRgn is not */
/* really correct either, it doesn't matter much... */
/* At least the outline will be correct :-) */
hrgn = CreatePolyPolygonRgn32( pt, counts, polygons, dc->w.polyFillMode );
X11DRV_PaintRgn( dc, hrgn );
DeleteObject32( hrgn );
/* Draw the outline of the polygons */
if (DC_SetupGCForPen ( dc ))
{
int i, j, max = 0;
XPoint *points;
for (i = 0; i < polygons; i++) if (counts[i] > max) max = counts[i];
points = (XPoint *) xmalloc( sizeof(XPoint) * (max+1) );
for (i = 0; i < polygons; i++)
{
for (j = 0; j < counts[i]; j++)
{
points[j].x = dc->w.DCOrgX + XLPTODP( dc, pt->x );
points[j].y = dc->w.DCOrgY + YLPTODP( dc, pt->y );
pt++;
}
points[j] = points[0];
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, j + 1, CoordModeOrigin );
}
free( points );
}
return TRUE;
}
/**********************************************************************
* X11DRV_PolyPolyline
*/
BOOL32
X11DRV_PolyPolyline( DC *dc, LPPOINT32 pt, LPDWORD counts, DWORD polylines )
{
if (DC_SetupGCForPen ( dc ))
{
int i, j, max = 0;
XPoint *points;
for (i = 0; i < polylines; i++) if (counts[i] > max) max = counts[i];
points = (XPoint *) xmalloc( sizeof(XPoint) * (max+1) );
for (i = 0; i < polylines; i++)
{
for (j = 0; j < counts[i]; j++)
{
points[j].x = dc->w.DCOrgX + XLPTODP( dc, pt->x );
points[j].y = dc->w.DCOrgY + YLPTODP( dc, pt->y );
pt++;
}
points[j] = points[0];
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, j + 1, CoordModeOrigin );
}
free( points );
}
return TRUE;
}
/**********************************************************************
* X11DRV_InternalFloodFill
*
* Internal helper function for flood fill.
* (xorg,yorg) is the origin of the X image relative to the drawable.
* (x,y) is relative to the origin of the X image.
*/
static void X11DRV_InternalFloodFill(XImage *image, DC *dc,
int x, int y,
int xOrg, int yOrg,
Pixel pixel, WORD fillType )
{
int left, right;
#define TO_FLOOD(x,y) ((fillType == FLOODFILLBORDER) ? \
(XGetPixel(image,x,y) != pixel) : \
(XGetPixel(image,x,y) == pixel))
if (!TO_FLOOD(x,y)) return;
/* Find left and right boundaries */
left = right = x;
while ((left > 0) && TO_FLOOD( left-1, y )) left--;
while ((right < image->width) && TO_FLOOD( right, y )) right++;
XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
xOrg + left, yOrg + y, right-left, 1 );
/* Set the pixels of this line so we don't fill it again */
for (x = left; x < right; x++)
{
if (fillType == FLOODFILLBORDER) XPutPixel( image, x, y, pixel );
else XPutPixel( image, x, y, ~pixel );
}
/* Fill the line above */
if (--y >= 0)
{
x = left;
while (x < right)
{
while ((x < right) && !TO_FLOOD(x,y)) x++;
if (x >= right) break;
while ((x < right) && TO_FLOOD(x,y)) x++;
X11DRV_InternalFloodFill(image, dc, x-1, y,
xOrg, yOrg, pixel, fillType );
}
}
/* Fill the line below */
if ((y += 2) < image->height)
{
x = left;
while (x < right)
{
while ((x < right) && !TO_FLOOD(x,y)) x++;
if (x >= right) break;
while ((x < right) && TO_FLOOD(x,y)) x++;
X11DRV_InternalFloodFill(image, dc, x-1, y,
xOrg, yOrg, pixel, fillType );
}
}
#undef TO_FLOOD
}
/**********************************************************************
* X11DRV_DoFloodFill
*
* Main flood-fill routine.
*
* The Xlib critical section must be entered before calling this function.
*/
struct FloodFill_params
{
DC *dc;
INT32 x;
INT32 y;
COLORREF color;
UINT32 fillType;
};
static BOOL32 X11DRV_DoFloodFill( const struct FloodFill_params *params )
{
XImage *image;
RECT32 rect;
DC *dc = params->dc;
if (GetRgnBox32( dc->w.hGCClipRgn, &rect ) == ERROR) return FALSE;
if (!(image = XGetImage( display, dc->u.x.drawable,
rect.left,
rect.top,
rect.right - rect.left,
rect.bottom - rect.top,
AllPlanes, ZPixmap ))) return FALSE;
if (DC_SetupGCForBrush( dc ))
{
/* ROP mode is always GXcopy for flood-fill */
XSetFunction( display, dc->u.x.gc, GXcopy );
X11DRV_InternalFloodFill(image, dc,
XLPTODP(dc,params->x) + dc->w.DCOrgX - rect.left,
YLPTODP(dc,params->y) + dc->w.DCOrgY - rect.top,
rect.left,
rect.top,
COLOR_ToPhysical( dc, params->color ),
params->fillType );
}
XDestroyImage( image );
return TRUE;
}
/**********************************************************************
* X11DRV_ExtFloodFill
*/
BOOL32
X11DRV_ExtFloodFill( DC *dc, INT32 x, INT32 y, COLORREF color,
UINT32 fillType )
{
BOOL32 result;
struct FloodFill_params params = { dc, x, y, color, fillType };
TRACE(graphics, "X11DRV_ExtFloodFill %d,%d %06lx %d\n",
x, y, color, fillType );
if (!PtVisible32( dc->hSelf, x, y )) return FALSE;
EnterCriticalSection( &X11DRV_CritSection );
result = CALL_LARGE_STACK( X11DRV_DoFloodFill, &params );
LeaveCriticalSection( &X11DRV_CritSection );
return result;
}
/******************************************************************
*
* *Very* simple bezier drawing code,
*
* It uses a recursive algorithm to divide the curve in a series
* of straight line segements. Not ideal but for me sufficient.
* If you are in need for something better look for some incremental
* algorithm.
*
* 7 July 1998 Rein Klazes
*/
/*
* some macro definitions for bezier drawing
*
* to avoid trucation errors the coordinates are
* shifted upwards. When used in drawing they are
* shifted down again, including correct rounding
* and avoiding floating point arithmatic
* 4 bits should allow 27 bits coordinates which I saw
* somewere in the win32 doc's
*
*/
#define BEZIERSHIFTBITS 4
#define BEZIERSHIFTUP(x) ((x)<<BEZIERSHIFTBITS)
#define BEZIERPIXEL BEZIERSHIFTUP(1)
#define BEZIERSHIFTDOWN(x) (((x)+(1<<(BEZIERSHIFTBITS-1)))>>BEZIERSHIFTBITS)
/* maximum depth of recursion */
#define BEZIERMAXDEPTH 8
/* size of array to store points on */
/* enough for one curve */
#define BEZMAXPOINTS (150)
/* calculate Bezier average, in this case the middle
* correctly rounded...
* */
#define BEZIERMIDDLE(Mid, P1, P2) \
(Mid).x=((P1).x+(P2).x + 1)/2;\
(Mid).y=((P1).y+(P2).y + 1)/2;
/**********************************************************
* BezierCheck helper function to check
* that recursion can be terminated
* Points[0] and Points[3] are begin and endpoint
* Points[1] and Points[2] are control points
* level is the recursion depth
* returns true if the recusion can be terminated
*/
static BOOL32 BezierCheck( int level, POINT32 *Points)
{
INT32 dx, dy;
dx=Points[3].x-Points[0].x;
dy=Points[3].y-Points[0].y;
if(ABS(dy)<=ABS(dx)){/* shallow line */
/* check that control points are between begin and end */
if(Points[1].x < Points[0].x){
if(Points[1].x < Points[3].x)
return FALSE;
}else
if(Points[1].x > Points[3].x)
return FALSE;
if(Points[2].x < Points[0].x){
if(Points[2].x < Points[3].x)
return FALSE;
}else
if(Points[2].x > Points[3].x)
return FALSE;
dx=BEZIERSHIFTDOWN(dx);
if(!dx) return TRUE;
if(abs(Points[1].y-Points[0].y-(dy/dx)*
BEZIERSHIFTDOWN(Points[1].x-Points[0].x)) > BEZIERPIXEL ||
abs(Points[2].y-Points[0].y-(dy/dx)*
BEZIERSHIFTDOWN(Points[2].x-Points[0].x)) > BEZIERPIXEL )
return FALSE;
else
return TRUE;
}else{ /* steep line */
/* check that control points are between begin and end */
if(Points[1].y < Points[0].y){
if(Points[1].y < Points[3].y)
return FALSE;
}else
if(Points[1].y > Points[3].y)
return FALSE;
if(Points[2].y < Points[0].y){
if(Points[2].y < Points[3].y)
return FALSE;
}else
if(Points[2].y > Points[3].y)
return FALSE;
dy=BEZIERSHIFTDOWN(dy);
if(!dy) return TRUE;
if(abs(Points[1].x-Points[0].x-(dx/dy)*
BEZIERSHIFTDOWN(Points[1].y-Points[0].y)) > BEZIERPIXEL ||
abs(Points[2].x-Points[0].x-(dx/dy)*
BEZIERSHIFTDOWN(Points[2].y-Points[0].y)) > BEZIERPIXEL )
return FALSE;
else
return TRUE;
}
}
/***********************************************************************
* X11DRV_Bezier
* Draw a -what microsoft calls- bezier curve
* The routine recursively devides the curve
* in two parts until a straight line can be drawn
*
* level recusion depth counted backwards
* dc device context
* Points array of begin(0), end(3) and control points(1 and 2)
* XPoints array with points calculated sofar
* *pIx nr points calculated sofar
*
*/
static void X11DRV_Bezier(int level, DC * dc, POINT32 *Points,
XPoint* xpoints, unsigned int* pIx)
{
if(*pIx == BEZMAXPOINTS){
TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
xpoints, *pIx, CoordModeOrigin );
*pIx=0;
}
if(!level || BezierCheck(level, Points)) {
if(*pIx == 0){
xpoints[*pIx].x= dc->w.DCOrgX + BEZIERSHIFTDOWN(Points[0].x);
xpoints[*pIx].y= dc->w.DCOrgY + BEZIERSHIFTDOWN(Points[0].y);
*pIx=1;
}
xpoints[*pIx].x= dc->w.DCOrgX + BEZIERSHIFTDOWN(Points[3].x);
xpoints[*pIx].y= dc->w.DCOrgY + BEZIERSHIFTDOWN(Points[3].y);
(*pIx) ++;
} else {
POINT32 Points2[4]; /* for the second recursive call */
Points2[3]=Points[3];
BEZIERMIDDLE(Points2[2], Points[2], Points[3]);
BEZIERMIDDLE(Points2[0], Points[1], Points[2]);
BEZIERMIDDLE(Points2[1],Points2[0],Points2[2]);
BEZIERMIDDLE(Points[1], Points[0], Points[1]);
BEZIERMIDDLE(Points[2], Points[1], Points2[0]);
BEZIERMIDDLE(Points[3], Points[2], Points2[1]);
Points2[0]=Points[3];
/* do the two halves */
X11DRV_Bezier(level-1, dc, Points, xpoints, pIx);
X11DRV_Bezier(level-1, dc, Points2, xpoints, pIx);
}
}
/***********************************************************************
* X11DRV_PolyBezier
* Implement functionality for PolyBezier and PolyBezierTo
* calls.
* [i] dc pointer to device context
* [i] start, first point in curve
* [i] BezierPoints , array of point filled with rest of the points
* [i] count, number of points in BezierPoints, must be a
* multiple of 3.
*/
BOOL32
X11DRV_PolyBezier(DC *dc, POINT32 start, POINT32 *BezierPoints, DWORD count)
{
POINT32 Points[4];
int i;
unsigned int ix=0;
XPoint* xpoints;
TRACE(graphics, "dc=%04x count=%ld %d,%d - %d,%d - %d,%d -%d,%d \n",
(int)dc, count,
start.x, start.y,
(Points+0)->x, (Points+0)->y,
(Points+1)->x, (Points+1)->y,
(Points+2)->x, (Points+2)->y);
if(!count || count % 3){/* paranoid */
WARN(graphics," bad value for count : %ld\n", count);
return FALSE;
}
xpoints=(XPoint*) xmalloc( sizeof(XPoint)*BEZMAXPOINTS);
Points[3].x=BEZIERSHIFTUP(XLPTODP(dc,start.x));
Points[3].y=BEZIERSHIFTUP(YLPTODP(dc,start.y));
while(count){
Points[0]=Points[3];
for(i=1;i<4;i++) {
Points[i].x= BEZIERSHIFTUP(XLPTODP(dc,BezierPoints->x));
Points[i].y= BEZIERSHIFTUP(YLPTODP(dc,BezierPoints->y));
BezierPoints++;
}
X11DRV_Bezier(BEZIERMAXDEPTH , dc, Points, xpoints, &ix );
count -=3;
}
if( ix) TSXDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
xpoints, ix, CoordModeOrigin );
free(xpoints);
return TRUE;
}
/**********************************************************************
* X11DRV_SetBkColor
*/
COLORREF
X11DRV_SetBkColor( DC *dc, COLORREF color )
{
X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
COLORREF oldColor;
oldColor = dc->w.backgroundColor;
dc->w.backgroundColor = color;
physDev->backgroundPixel = COLOR_ToPhysical( dc, color );
return oldColor;
}
/**********************************************************************
* X11DRV_SetTextColor
*/
COLORREF
X11DRV_SetTextColor( DC *dc, COLORREF color )
{
X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
COLORREF oldColor;
oldColor = dc->w.textColor;
dc->w.textColor = color;
physDev->textPixel = COLOR_ToPhysical( dc, color );
return oldColor;
}
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