/* * X11 graphics driver graphics functions * * Copyright 1993,1994 Alexandre Julliard */ /* * FIXME: none of these functions obey the GM_ADVANCED * graphics mode */ #include #ifdef HAVE_FLOAT_H # include #endif #include #include "ts_xlib.h" #include "ts_xutil.h" #include #ifndef PI #define PI M_PI #endif #include #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; /* Make sure ell_width and ell_height are >= 1 otherwise XDrawArc gets called with width/height < 0 */ ell_width = MAX(abs( ell_width * dc->vportExtX / dc->wndExtX ), 1); ell_height = MAX(abs( ell_height * dc->vportExtY / dc->wndExtY ), 1); /* 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, const POINT32* 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, const POINT32* 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, const POINT32* pt, const INT32* 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, const POINT32* pt, const DWORD* 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, ¶ms ); 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) /* 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, const 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; }