| /* |
| * X11 graphics driver graphics functions |
| * |
| * Copyright 1993,1994 Alexandre Julliard |
| */ |
| |
| /* |
| * FIXME: none of these functions obey the GM_ADVANCED |
| * graphics mode |
| */ |
| |
| #include "config.h" |
| |
| #ifndef X_DISPLAY_MISSING |
| |
| #include <X11/Intrinsic.h> |
| #include "ts_xlib.h" |
| #include "ts_xutil.h" |
| |
| #include <math.h> |
| #ifdef HAVE_FLOAT_H |
| # include <float.h> |
| #endif |
| #include <stdlib.h> |
| #ifndef PI |
| #define PI M_PI |
| #endif |
| #include <string.h> |
| |
| #include "x11drv.h" |
| #include "x11font.h" |
| #include "bitmap.h" |
| #include "gdi.h" |
| #include "dc.h" |
| #include "monitor.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)) |
| |
| /* ROP code to GC function conversion */ |
| const int X11DRV_XROPfunction[16] = |
| { |
| GXclear, /* R2_BLACK */ |
| GXnor, /* R2_NOTMERGEPEN */ |
| GXandInverted, /* R2_MASKNOTPEN */ |
| GXcopyInverted, /* R2_NOTCOPYPEN */ |
| GXandReverse, /* R2_MASKPENNOT */ |
| GXinvert, /* R2_NOT */ |
| GXxor, /* R2_XORPEN */ |
| GXnand, /* R2_NOTMASKPEN */ |
| GXand, /* R2_MASKPEN */ |
| GXequiv, /* R2_NOTXORPEN */ |
| GXnoop, /* R2_NOP */ |
| GXorInverted, /* R2_MERGENOTPEN */ |
| GXcopy, /* R2_COPYPEN */ |
| GXorReverse, /* R2_MERGEPENNOT */ |
| GXor, /* R2_MERGEPEN */ |
| GXset /* R2_WHITE */ |
| }; |
| |
| |
| /*********************************************************************** |
| * X11DRV_SetupGCForPatBlt |
| * |
| * Setup the GC for a PatBlt operation using current brush. |
| * If fMapColors is TRUE, X pixels are mapped to Windows colors. |
| * Return FALSE if brush is BS_NULL, TRUE otherwise. |
| */ |
| BOOL X11DRV_SetupGCForPatBlt( DC * dc, GC gc, BOOL fMapColors ) |
| { |
| XGCValues val; |
| unsigned long mask; |
| Pixmap pixmap = 0; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if (physDev->brush.style == BS_NULL) return FALSE; |
| if (physDev->brush.pixel == -1) |
| { |
| /* Special case used for monochrome pattern brushes. |
| * We need to swap foreground and background because |
| * Windows does it the wrong way... |
| */ |
| val.foreground = physDev->backgroundPixel; |
| val.background = physDev->textPixel; |
| } |
| else |
| { |
| val.foreground = physDev->brush.pixel; |
| val.background = physDev->backgroundPixel; |
| } |
| if (fMapColors && COLOR_PixelToPalette) |
| { |
| val.foreground = COLOR_PixelToPalette[val.foreground]; |
| val.background = COLOR_PixelToPalette[val.background]; |
| } |
| |
| if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc); |
| |
| val.function = X11DRV_XROPfunction[dc->w.ROPmode-1]; |
| /* |
| ** Let's replace GXinvert by GXxor with (black xor white) |
| ** This solves the selection color and leak problems in excel |
| ** FIXME : Let's do that only if we work with X-pixels, not with Win-pixels |
| */ |
| if (val.function == GXinvert) |
| { |
| val.foreground = BlackPixelOfScreen(X11DRV_GetXScreen()) ^ WhitePixelOfScreen(X11DRV_GetXScreen()); |
| val.function = GXxor; |
| } |
| val.fill_style = physDev->brush.fillStyle; |
| switch(val.fill_style) |
| { |
| case FillStippled: |
| case FillOpaqueStippled: |
| if (dc->w.backgroundMode==OPAQUE) val.fill_style = FillOpaqueStippled; |
| val.stipple = physDev->brush.pixmap; |
| mask = GCStipple; |
| break; |
| |
| case FillTiled: |
| if (fMapColors && COLOR_PixelToPalette) |
| { |
| register int x, y; |
| XImage *image; |
| EnterCriticalSection( &X11DRV_CritSection ); |
| pixmap = XCreatePixmap( display, |
| X11DRV_GetXRootWindow(), |
| 8, 8, |
| MONITOR_GetDepth(&MONITOR_PrimaryMonitor) ); |
| image = XGetImage( display, physDev->brush.pixmap, 0, 0, 8, 8, |
| AllPlanes, ZPixmap ); |
| for (y = 0; y < 8; y++) |
| for (x = 0; x < 8; x++) |
| XPutPixel( image, x, y, |
| COLOR_PixelToPalette[XGetPixel( image, x, y)] ); |
| XPutImage( display, pixmap, gc, image, 0, 0, 0, 0, 8, 8 ); |
| XDestroyImage( image ); |
| LeaveCriticalSection( &X11DRV_CritSection ); |
| val.tile = pixmap; |
| } |
| else val.tile = physDev->brush.pixmap; |
| mask = GCTile; |
| break; |
| |
| default: |
| mask = 0; |
| break; |
| } |
| val.ts_x_origin = dc->w.DCOrgX + dc->w.brushOrgX; |
| val.ts_y_origin = dc->w.DCOrgY + dc->w.brushOrgY; |
| val.fill_rule = (dc->w.polyFillMode==WINDING) ? WindingRule : EvenOddRule; |
| TSXChangeGC( display, gc, |
| GCFunction | GCForeground | GCBackground | GCFillStyle | |
| GCFillRule | GCTileStipXOrigin | GCTileStipYOrigin | mask, |
| &val ); |
| if (pixmap) TSXFreePixmap( display, pixmap ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_SetupGCForBrush |
| * |
| * Setup physDev->gc for drawing operations using current brush. |
| * Return FALSE if brush is BS_NULL, TRUE otherwise. |
| */ |
| BOOL X11DRV_SetupGCForBrush( DC * dc ) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| return X11DRV_SetupGCForPatBlt( dc, physDev->gc, FALSE ); |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_SetupGCForPen |
| * |
| * Setup physDev->gc for drawing operations using current pen. |
| * Return FALSE if pen is PS_NULL, TRUE otherwise. |
| */ |
| BOOL X11DRV_SetupGCForPen( DC * dc ) |
| { |
| XGCValues val; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if (physDev->pen.style == PS_NULL) return FALSE; |
| |
| if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc); |
| |
| switch (dc->w.ROPmode) |
| { |
| case R2_BLACK : |
| val.foreground = BlackPixelOfScreen( X11DRV_GetXScreen() ); |
| val.function = GXcopy; |
| break; |
| case R2_WHITE : |
| val.foreground = WhitePixelOfScreen( X11DRV_GetXScreen() ); |
| val.function = GXcopy; |
| break; |
| case R2_XORPEN : |
| val.foreground = physDev->pen.pixel; |
| /* It is very unlikely someone wants to XOR with 0 */ |
| /* This fixes the rubber-drawings in paintbrush */ |
| if (val.foreground == 0) |
| val.foreground = BlackPixelOfScreen( X11DRV_GetXScreen() ) |
| ^ WhitePixelOfScreen( X11DRV_GetXScreen() ); |
| val.function = GXxor; |
| break; |
| default : |
| val.foreground = physDev->pen.pixel; |
| val.function = X11DRV_XROPfunction[dc->w.ROPmode-1]; |
| } |
| val.background = physDev->backgroundPixel; |
| val.fill_style = FillSolid; |
| if ((physDev->pen.style!=PS_SOLID) && (physDev->pen.style!=PS_INSIDEFRAME)) |
| { |
| TSXSetDashes( display, physDev->gc, 0, physDev->pen.dashes, |
| physDev->pen.dash_len ); |
| val.line_style = (dc->w.backgroundMode == OPAQUE) ? |
| LineDoubleDash : LineOnOffDash; |
| } |
| else val.line_style = LineSolid; |
| val.line_width = physDev->pen.width; |
| if (val.line_width <= 1) { |
| val.cap_style = CapNotLast; |
| } else { |
| switch (physDev->pen.endcap) |
| { |
| case PS_ENDCAP_SQUARE: |
| val.cap_style = CapProjecting; |
| break; |
| case PS_ENDCAP_FLAT: |
| val.cap_style = CapButt; |
| break; |
| case PS_ENDCAP_ROUND: |
| default: |
| val.cap_style = CapRound; |
| } |
| } |
| switch (physDev->pen.linejoin) |
| { |
| case PS_JOIN_BEVEL: |
| val.join_style = JoinBevel; |
| break; |
| case PS_JOIN_MITER: |
| val.join_style = JoinMiter; |
| break; |
| case PS_JOIN_ROUND: |
| default: |
| val.join_style = JoinRound; |
| } |
| TSXChangeGC( display, physDev->gc, |
| GCFunction | GCForeground | GCBackground | GCLineWidth | |
| GCLineStyle | GCCapStyle | GCJoinStyle | GCFillStyle, &val ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_SetupGCForText |
| * |
| * Setup physDev->gc for text drawing operations. |
| * Return FALSE if the font is null, TRUE otherwise. |
| */ |
| BOOL X11DRV_SetupGCForText( DC * dc ) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| XFontStruct* xfs = XFONT_GetFontStruct( physDev->font ); |
| |
| if( xfs ) |
| { |
| XGCValues val; |
| |
| if (dc->w.flags & DC_DIRTY) CLIPPING_UpdateGCRegion(dc); |
| |
| val.function = GXcopy; /* Text is always GXcopy */ |
| val.foreground = physDev->textPixel; |
| val.background = physDev->backgroundPixel; |
| val.fill_style = FillSolid; |
| val.font = xfs->fid; |
| |
| TSXChangeGC( display, physDev->gc, |
| GCFunction | GCForeground | GCBackground | GCFillStyle | |
| GCFont, &val ); |
| return TRUE; |
| } |
| WARN(dc, "Physical font failure\n" ); |
| return FALSE; |
| } |
| |
| |
| /********************************************************************** |
| * X11DRV_MoveToEx |
| */ |
| BOOL |
| X11DRV_MoveToEx(DC *dc,INT x,INT y,LPPOINT 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 |
| */ |
| BOOL |
| X11DRV_LineTo( DC *dc, INT x, INT y ) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if (X11DRV_SetupGCForPen( dc )) |
| TSXDrawLine(display, physDev->drawable, physDev->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; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * X11DRV_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 BOOL |
| X11DRV_DrawArc( DC *dc, INT left, INT top, INT right, |
| INT bottom, INT xstart, INT ystart, |
| INT xend, INT yend, INT lines ) |
| { |
| INT xcenter, ycenter, istart_angle, idiff_angle; |
| INT width, oldwidth, oldendcap; |
| double start_angle, end_angle; |
| XPoint points[4]; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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) { INT tmp = right; right = left; left = tmp; } |
| if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; } |
| if ((left == right) || (top == bottom) |
| ||(lines && ((right-left==1)||(bottom-top==1)))) return TRUE; |
| |
| oldwidth = width = physDev->pen.width; |
| oldendcap = physDev->pen.endcap; |
| if (!width) width = 1; |
| if(physDev->pen.style == PS_NULL) width = 0; |
| |
| if ((physDev->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 */ |
| physDev->pen.width = width; |
| physDev->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 = (INT)(start_angle * 180 * 64 / PI + 0.5); |
| idiff_angle = (INT)((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) && X11DRV_SetupGCForBrush( dc )) { |
| TSXSetArcMode( display, physDev->gc, |
| (lines==1) ? ArcChord : ArcPieSlice); |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right-left-1, bottom-top-1, istart_angle, idiff_angle ); |
| } |
| |
| /* Draw arc and lines */ |
| |
| if (X11DRV_SetupGCForPen( dc )){ |
| TSXDrawArc( display, physDev->drawable, physDev->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) { |
| INT 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, physDev->drawable, physDev->gc, |
| points, lines+1, CoordModeOrigin ); |
| } |
| } |
| physDev->pen.width = oldwidth; |
| physDev->pen.endcap = oldendcap; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_Arc |
| */ |
| BOOL |
| X11DRV_Arc( DC *dc, INT left, INT top, INT right, INT bottom, |
| INT xstart, INT ystart, INT xend, INT yend ) |
| { |
| return X11DRV_DrawArc( dc, left, top, right, bottom, |
| xstart, ystart, xend, yend, 0 ); |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_Pie |
| */ |
| BOOL |
| X11DRV_Pie( DC *dc, INT left, INT top, INT right, INT bottom, |
| INT xstart, INT ystart, INT xend, INT yend ) |
| { |
| return X11DRV_DrawArc( dc, left, top, right, bottom, |
| xstart, ystart, xend, yend, 2 ); |
| } |
| |
| /*********************************************************************** |
| * X11DRV_Chord |
| */ |
| BOOL |
| X11DRV_Chord( DC *dc, INT left, INT top, INT right, INT bottom, |
| INT xstart, INT ystart, INT xend, INT yend ) |
| { |
| return X11DRV_DrawArc( dc, left, top, right, bottom, |
| xstart, ystart, xend, yend, 1 ); |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_Ellipse |
| */ |
| BOOL |
| X11DRV_Ellipse( DC *dc, INT left, INT top, INT right, INT bottom ) |
| { |
| INT width, oldwidth; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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) { INT tmp = right; right = left; left = tmp; } |
| if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; } |
| |
| oldwidth = width = physDev->pen.width; |
| if (!width) width = 1; |
| if(physDev->pen.style == PS_NULL) width = 0; |
| |
| if ((physDev->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 */ |
| physDev->pen.width = width; |
| |
| if (X11DRV_SetupGCForBrush( dc )) |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right-left-1, bottom-top-1, 0, 360*64 ); |
| if (X11DRV_SetupGCForPen( dc )) |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right-left-1, bottom-top-1, 0, 360*64 ); |
| physDev->pen.width = oldwidth; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_Rectangle |
| */ |
| BOOL |
| X11DRV_Rectangle(DC *dc, INT left, INT top, INT right, INT bottom) |
| { |
| INT width, oldwidth, oldjoinstyle; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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) { INT tmp = right; right = left; left = tmp; } |
| if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; } |
| |
| oldwidth = width = physDev->pen.width; |
| if (!width) width = 1; |
| if(physDev->pen.style == PS_NULL) width = 0; |
| |
| if ((physDev->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; |
| physDev->pen.width = width; |
| oldjoinstyle = physDev->pen.linejoin; |
| if(physDev->pen.type != PS_GEOMETRIC) |
| physDev->pen.linejoin = PS_JOIN_MITER; |
| |
| if ((right > left + width) && (bottom > top + width)) |
| { |
| if (X11DRV_SetupGCForBrush( dc )) |
| TSXFillRectangle( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left + (width + 1) / 2, |
| dc->w.DCOrgY + top + (width + 1) / 2, |
| right-left-width-1, bottom-top-width-1); |
| } |
| if (X11DRV_SetupGCForPen( dc )) |
| TSXDrawRectangle( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right-left-1, bottom-top-1 ); |
| |
| physDev->pen.width = oldwidth; |
| physDev->pen.linejoin = oldjoinstyle; |
| return TRUE; |
| } |
| |
| /*********************************************************************** |
| * X11DRV_RoundRect |
| */ |
| BOOL |
| X11DRV_RoundRect( DC *dc, INT left, INT top, INT right, |
| INT bottom, INT ell_width, INT ell_height ) |
| { |
| INT width, oldwidth, oldendcap; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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) { INT tmp = right; right = left; left = tmp; } |
| if (bottom < top) { INT tmp = bottom; bottom = top; top = tmp; } |
| |
| oldwidth = width = physDev->pen.width; |
| oldendcap = physDev->pen.endcap; |
| if (!width) width = 1; |
| if(physDev->pen.style == PS_NULL) width = 0; |
| |
| if ((physDev->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; |
| physDev->pen.width = width; |
| physDev->pen.endcap = PS_ENDCAP_SQUARE; |
| |
| if (X11DRV_SetupGCForBrush( dc )) |
| { |
| if (ell_width > (right-left) ) |
| if (ell_height > (bottom-top) ) |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right - left - 1, bottom - top - 1, |
| 0, 360 * 64 ); |
| else{ |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right - left - 1, ell_height, 0, 180 * 64 ); |
| TSXFillArc( display, physDev->drawable, physDev->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, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| ell_width, bottom - top - 1, 90 * 64, 180 * 64 ); |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + right - ell_width -1, dc->w.DCOrgY + top, |
| ell_width, bottom - top - 1, 270 * 64, 180 * 64 ); |
| }else{ |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| ell_width, ell_height, 90 * 64, 90 * 64 ); |
| TSXFillArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, |
| dc->w.DCOrgY + bottom - ell_height - 1, |
| ell_width, ell_height, 180 * 64, 90 * 64 ); |
| TSXFillArc( display, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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 (X11DRV_SetupGCForPen(dc)) { |
| if (ell_width > (right-left) ) |
| if (ell_height > (bottom-top) ) |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right - left - 1, bottom -top - 1, 0 , 360 * 64 ); |
| else{ |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| right - left - 1, ell_height - 1, 0 , 180 * 64 ); |
| TSXDrawArc( display, physDev->drawable, physDev->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, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| ell_width - 1 , bottom - top - 1, 90 * 64 , 180 * 64 ); |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + right - ell_width, |
| dc->w.DCOrgY + top, |
| ell_width - 1 , bottom - top - 1, 270 * 64 , 180 * 64 ); |
| }else{ |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + top, |
| ell_width - 1, ell_height - 1, 90 * 64, 90 * 64 ); |
| TSXDrawArc( display, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, dc->w.DCOrgY + bottom - ell_height, |
| ell_width - 1, ell_height - 1, 180 * 64, 90 * 64 ); |
| TSXDrawArc( display, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->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, physDev->drawable, physDev->gc, |
| dc->w.DCOrgX + left, |
| dc->w.DCOrgY + top + ell_height / 2, |
| dc->w.DCOrgX + left, |
| dc->w.DCOrgY + bottom - (ell_height+1) / 2); |
| } |
| } |
| physDev->pen.width = oldwidth; |
| physDev->pen.endcap = oldendcap; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_SetPixel |
| */ |
| COLORREF |
| X11DRV_SetPixel( DC *dc, INT x, INT y, COLORREF color ) |
| { |
| Pixel pixel; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| x = dc->w.DCOrgX + XLPTODP( dc, x ); |
| y = dc->w.DCOrgY + YLPTODP( dc, y ); |
| pixel = COLOR_ToPhysical( dc, color ); |
| |
| TSXSetForeground( display, physDev->gc, pixel ); |
| TSXSetFunction( display, physDev->gc, GXcopy ); |
| TSXDrawPoint( display, physDev->drawable, physDev->gc, x, y ); |
| |
| /* inefficient but simple... */ |
| |
| return COLOR_ToLogical(pixel); |
| } |
| |
| |
| /*********************************************************************** |
| * X11DRV_GetPixel |
| */ |
| COLORREF |
| X11DRV_GetPixel( DC *dc, INT x, INT y ) |
| { |
| static Pixmap pixmap = 0; |
| XImage * image; |
| int pixel; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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, physDev->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, X11DRV_GetXRootWindow(), |
| 1, 1, dc->w.bitsPerPixel ); |
| XCopyArea( display, physDev->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 |
| */ |
| BOOL |
| X11DRV_PaintRgn( DC *dc, HRGN hrgn ) |
| { |
| RECT box; |
| HRGN tmpVisRgn, prevVisRgn; |
| HDC hdc = dc->hSelf; /* FIXME: should not mix dc/hdc this way */ |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if (!(tmpVisRgn = CreateRectRgn( 0, 0, 0, 0 ))) return FALSE; |
| |
| /* Transform region into device co-ords */ |
| if ( !REGION_LPTODP( hdc, tmpVisRgn, hrgn ) |
| || OffsetRgn( tmpVisRgn, dc->w.DCOrgX, dc->w.DCOrgY ) == ERROR) { |
| DeleteObject( tmpVisRgn ); |
| return FALSE; |
| } |
| |
| /* Modify visible region */ |
| if (!(prevVisRgn = SaveVisRgn16( hdc ))) { |
| DeleteObject( tmpVisRgn ); |
| return FALSE; |
| } |
| CombineRgn( tmpVisRgn, prevVisRgn, tmpVisRgn, RGN_AND ); |
| SelectVisRgn16( hdc, tmpVisRgn ); |
| DeleteObject( tmpVisRgn ); |
| |
| /* Fill the region */ |
| |
| GetRgnBox( dc->w.hGCClipRgn, &box ); |
| if (X11DRV_SetupGCForBrush( dc )) |
| TSXFillRectangle( display, physDev->drawable, physDev->gc, |
| box.left, box.top, |
| box.right-box.left, box.bottom-box.top ); |
| |
| /* Restore the visible region */ |
| |
| RestoreVisRgn16( hdc ); |
| return TRUE; |
| } |
| |
| /********************************************************************** |
| * X11DRV_Polyline |
| */ |
| BOOL |
| X11DRV_Polyline( DC *dc, const POINT* pt, INT count ) |
| { |
| INT oldwidth; |
| register int i; |
| XPoint *points; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if((oldwidth = physDev->pen.width) == 0) physDev->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 (X11DRV_SetupGCForPen ( dc )) |
| TSXDrawLines( display, physDev->drawable, physDev->gc, |
| points, count, CoordModeOrigin ); |
| |
| free( points ); |
| physDev->pen.width = oldwidth; |
| return TRUE; |
| } |
| |
| |
| /********************************************************************** |
| * X11DRV_Polygon |
| */ |
| BOOL |
| X11DRV_Polygon( DC *dc, const POINT* pt, INT count ) |
| { |
| register int i; |
| XPoint *points; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| 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 (X11DRV_SetupGCForBrush( dc )) |
| TSXFillPolygon( display, physDev->drawable, physDev->gc, |
| points, count+1, Complex, CoordModeOrigin); |
| |
| if (X11DRV_SetupGCForPen ( dc )) |
| TSXDrawLines( display, physDev->drawable, physDev->gc, |
| points, count+1, CoordModeOrigin ); |
| |
| free( points ); |
| return TRUE; |
| } |
| |
| |
| /********************************************************************** |
| * X11DRV_PolyPolygon |
| */ |
| BOOL |
| X11DRV_PolyPolygon( DC *dc, const POINT* pt, const INT* counts, UINT polygons) |
| { |
| HRGN hrgn; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| /* FIXME: The points should be converted to device coords before */ |
| /* creating the region. */ |
| |
| hrgn = CreatePolyPolygonRgn( pt, counts, polygons, dc->w.polyFillMode ); |
| X11DRV_PaintRgn( dc, hrgn ); |
| DeleteObject( hrgn ); |
| |
| /* Draw the outline of the polygons */ |
| |
| if (X11DRV_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, physDev->drawable, physDev->gc, |
| points, j + 1, CoordModeOrigin ); |
| } |
| free( points ); |
| } |
| return TRUE; |
| } |
| |
| |
| /********************************************************************** |
| * X11DRV_PolyPolyline |
| */ |
| BOOL |
| X11DRV_PolyPolyline( DC *dc, const POINT* pt, const DWORD* counts, DWORD polylines ) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| if (X11DRV_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, physDev->drawable, physDev->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 ) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| 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, physDev->drawable, physDev->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; |
| INT x; |
| INT y; |
| COLORREF color; |
| UINT fillType; |
| }; |
| |
| static BOOL X11DRV_DoFloodFill( const struct FloodFill_params *params ) |
| { |
| XImage *image; |
| RECT rect; |
| DC *dc = params->dc; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if (GetRgnBox( dc->w.hGCClipRgn, &rect ) == ERROR) return FALSE; |
| |
| if (!(image = XGetImage( display, physDev->drawable, |
| rect.left, |
| rect.top, |
| rect.right - rect.left, |
| rect.bottom - rect.top, |
| AllPlanes, ZPixmap ))) return FALSE; |
| |
| if (X11DRV_SetupGCForBrush( dc )) |
| { |
| /* ROP mode is always GXcopy for flood-fill */ |
| XSetFunction( display, physDev->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 |
| */ |
| BOOL |
| X11DRV_ExtFloodFill( DC *dc, INT x, INT y, COLORREF color, |
| UINT fillType ) |
| { |
| BOOL result; |
| struct FloodFill_params params = { dc, x, y, color, fillType }; |
| |
| TRACE(graphics, "X11DRV_ExtFloodFill %d,%d %06lx %d\n", |
| x, y, color, fillType ); |
| |
| if (!PtVisible( 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) |
| #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 BOOL BezierCheck( int level, POINT *Points) |
| { |
| INT 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, POINT *Points, |
| XPoint* xpoints, unsigned int* pIx) |
| { |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| if(*pIx == BEZMAXPOINTS){ |
| TSXDrawLines( display, physDev->drawable, physDev->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 { |
| POINT 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. |
| */ |
| BOOL |
| X11DRV_PolyBezier(DC *dc, POINT start, const POINT* BezierPoints, DWORD count) |
| { |
| POINT Points[4]; |
| int i; |
| unsigned int ix=0; |
| XPoint* xpoints; |
| X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev; |
| |
| TRACE(graphics, "dc=%p count=%ld %ld,%ld - %ld,%ld - %ld,%ld - %ld,%ld\n", |
| 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, physDev->drawable, physDev->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; |
| } |
| |
| #endif /* !defined(X_DISPLAY_MISSING) */ |
