764 lines
22 KiB
C
764 lines
22 KiB
C
/*
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* GDI graphics operations
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*
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* Copyright 1993 Alexandre Julliard
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*/
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static char Copyright[] = "Copyright Alexandre Julliard, 1993";
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#include <math.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Intrinsic.h>
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#ifndef PI
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#define PI M_PI
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#endif
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#include "gdi.h"
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#include "syscolor.h"
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extern int COLOR_ToPhysical( DC *dc, COLORREF color );
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/***********************************************************************
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* LineTo (GDI.19)
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*/
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BOOL LineTo( HDC hdc, short x, short y )
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{
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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MF_MetaParam2(dc, META_LINETO, x, y);
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return TRUE;
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}
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if (DC_SetupGCForPen( dc ))
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XDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + XLPTODP( dc, dc->w.CursPosX ),
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dc->w.DCOrgY + YLPTODP( dc, dc->w.CursPosY ),
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dc->w.DCOrgX + XLPTODP( dc, x ),
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dc->w.DCOrgY + YLPTODP( dc, y ) );
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dc->w.CursPosX = x;
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dc->w.CursPosY = y;
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return TRUE;
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}
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/***********************************************************************
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* MoveTo (GDI.20)
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*/
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DWORD MoveTo( HDC hdc, short x, short y )
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{
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short oldx, oldy;
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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MF_MetaParam2(dc, META_MOVETO, x, y);
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return 0;
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}
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oldx = dc->w.CursPosX;
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oldy = dc->w.CursPosY;
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dc->w.CursPosX = x;
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dc->w.CursPosY = y;
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return oldx | (oldy << 16);
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}
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/***********************************************************************
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* MoveToEx (GDI.483)
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*/
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BOOL MoveToEx( HDC hdc, short x, short y, LPPOINT pt )
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{
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc) return FALSE;
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if (pt)
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{
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pt->x = dc->w.CursPosX;
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pt->y = dc->w.CursPosY;
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}
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dc->w.CursPosX = x;
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dc->w.CursPosY = y;
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return TRUE;
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}
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/***********************************************************************
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* GRAPH_DrawArc
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*
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* Helper functions for Arc(), Chord() and Pie().
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* 'lines' is the number of lines to draw: 0 for Arc, 1 for Chord, 2 for Pie.
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*/
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BOOL GRAPH_DrawArc( HDC hdc, int left, int top, int right, int bottom,
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int xstart, int ystart, int xend, int yend, int lines )
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{
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int xcenter, ycenter;
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double start_angle, end_angle, diff_angle;
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XPoint points[3];
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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switch (lines)
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{
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case 0:
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MF_MetaParam8(dc, META_ARC, left, top, right, bottom,
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xstart, ystart, xend, yend);
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break;
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case 1:
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MF_MetaParam8(dc, META_CHORD, left, top, right, bottom,
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xstart, ystart, xend, yend);
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break;
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case 2:
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MF_MetaParam8(dc, META_PIE, left, top, right, bottom,
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xstart, ystart, xend, yend);
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break;
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}
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return 0;
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}
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left = XLPTODP( dc, left );
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top = YLPTODP( dc, top );
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right = XLPTODP( dc, right );
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bottom = YLPTODP( dc, bottom );
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xstart = XLPTODP( dc, xstart );
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ystart = YLPTODP( dc, ystart );
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xend = XLPTODP( dc, xend );
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yend = YLPTODP( dc, yend );
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if ((left == right) || (top == bottom)) return FALSE;
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if (!DC_SetupGCForPen( dc )) return TRUE;
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xcenter = (right + left) / 2;
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ycenter = (bottom + top) / 2;
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start_angle = atan2( (double)(ycenter-ystart)*(right-left),
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(double)(xstart-xcenter)*(bottom-top) );
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end_angle = atan2( (double)(ycenter-yend)*(right-left),
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(double)(xend-xcenter)*(bottom-top) );
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diff_angle = end_angle - start_angle;
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if (diff_angle < 0.0) diff_angle += 2*PI;
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XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top,
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right-left-1, bottom-top-1,
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(int)(start_angle * 180 * 64 / PI),
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(int)(diff_angle * 180 * 64 / PI) );
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if (!lines) return TRUE;
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points[0].x = dc->w.DCOrgX + xcenter + (int)(cos(start_angle) * (right-left) / 2);
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points[0].y = dc->w.DCOrgY + ycenter - (int)(sin(start_angle) * (bottom-top) / 2);
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points[1].x = dc->w.DCOrgX + xcenter + (int)(cos(end_angle) * (right-left) / 2);
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points[1].y = dc->w.DCOrgY + ycenter - (int)(sin(end_angle) * (bottom-top) / 2);
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if (lines == 2)
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{
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points[2] = points[1];
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points[1].x = dc->w.DCOrgX + xcenter;
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points[1].y = dc->w.DCOrgY + ycenter;
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}
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XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
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points, lines+1, CoordModeOrigin );
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return TRUE;
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}
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/***********************************************************************
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* Arc (GDI.23)
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*/
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BOOL Arc( HDC hdc, int left, int top, int right, int bottom,
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int xstart, int ystart, int xend, int yend )
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{
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return GRAPH_DrawArc( hdc, left, top, right, bottom,
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xstart, ystart, xend, yend, 0 );
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}
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/***********************************************************************
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* Pie (GDI.26)
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*/
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BOOL Pie( HDC hdc, int left, int top, int right, int bottom,
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int xstart, int ystart, int xend, int yend )
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{
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return GRAPH_DrawArc( hdc, left, top, right, bottom,
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xstart, ystart, xend, yend, 2 );
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}
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/***********************************************************************
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* Chord (GDI.348)
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*/
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BOOL Chord( HDC hdc, int left, int top, int right, int bottom,
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int xstart, int ystart, int xend, int yend )
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{
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return GRAPH_DrawArc( hdc, left, top, right, bottom,
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xstart, ystart, xend, yend, 1 );
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}
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/***********************************************************************
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* Ellipse (GDI.24)
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*/
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BOOL Ellipse( HDC hdc, int left, int top, int right, int bottom )
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{
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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MF_MetaParam4(dc, META_ELLIPSE, left, top, right, bottom);
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return 0;
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}
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left = XLPTODP( dc, left );
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top = YLPTODP( dc, top );
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right = XLPTODP( dc, right );
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bottom = YLPTODP( dc, bottom );
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if ((left == right) || (top == bottom)) return FALSE;
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if (DC_SetupGCForBrush( dc ))
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XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top,
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right-left-1, bottom-top-1, 0, 360*64 );
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if (DC_SetupGCForPen( dc ))
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XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top,
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right-left-1, bottom-top-1, 0, 360*64 );
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return TRUE;
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}
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/***********************************************************************
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* Rectangle (GDI.27)
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*/
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BOOL Rectangle( HDC hdc, int left, int top, int right, int bottom )
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{
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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MF_MetaParam4(dc, META_RECTANGLE, left, top, right, bottom);
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return TRUE;
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}
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left = XLPTODP( dc, left );
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top = YLPTODP( dc, top );
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right = XLPTODP( dc, right );
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bottom = YLPTODP( dc, bottom );
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if (DC_SetupGCForBrush( dc ))
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XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top,
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right-left-1, bottom-top-1 );
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if (DC_SetupGCForPen( dc ))
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XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top,
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right-left-1, bottom-top-1 );
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return TRUE;
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}
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/***********************************************************************
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* RoundRect (GDI.28)
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*/
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BOOL RoundRect( HDC hDC, short left, short top, short right, short bottom,
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short ell_width, short ell_height)
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{
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int x1, y1, x2, y2;
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DC * dc = (DC *) GDI_GetObjPtr(hDC, DC_MAGIC);
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hDC, METAFILE_DC_MAGIC);
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if (!dc) return FALSE;
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MF_MetaParam6(dc, META_ROUNDRECT, left, top, right, bottom,
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ell_width, ell_height);
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return TRUE;
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}
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/*
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printf("RoundRect(%d %d %d %d %d %d\n",
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left, top, right, bottom, ell_width, ell_height);
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*/
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x1 = XLPTODP(dc, left);
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y1 = YLPTODP(dc, top);
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x2 = XLPTODP(dc, right - ell_width);
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y2 = YLPTODP(dc, bottom - ell_height);
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if (DC_SetupGCForBrush(dc)) {
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XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x1, dc->w.DCOrgY + y1,
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ell_width, ell_height, 90 * 64, 90 * 64);
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XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x1, dc->w.DCOrgY + y2,
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ell_width, ell_height, 180 * 64, 90 * 64);
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XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x2, dc->w.DCOrgY + y2,
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ell_width, ell_height, 270 * 64, 90 * 64);
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XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x2, dc->w.DCOrgY + y1,
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ell_width, ell_height, 0, 90 * 64);
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ell_width /= 2; ell_height /= 2;
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XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left + ell_width, dc->w.DCOrgY + top,
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right - left - 2 * ell_width, bottom - top);
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XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + left, dc->w.DCOrgY + top + ell_height,
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ell_width, bottom - top - 2 * ell_height);
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XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + right - ell_width, dc->w.DCOrgY + top + ell_height,
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ell_width, bottom - top - 2 * ell_height);
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ell_width *= 2; ell_height *= 2;
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}
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if (DC_SetupGCForPen(dc)) {
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XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x1, dc->w.DCOrgY + y1,
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ell_width, ell_height, 90 * 64, 90 * 64);
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XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x1, dc->w.DCOrgY + y2,
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ell_width, ell_height, 180 * 64, 90 * 64);
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XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x2, dc->w.DCOrgY + y2,
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ell_width, ell_height, 270 * 64, 90 * 64);
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XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
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dc->w.DCOrgX + x2, dc->w.DCOrgY + y1,
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ell_width, ell_height, 0, 90 * 64);
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}
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ell_width /= 2; ell_height /= 2;
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MoveTo(hDC, left, top + ell_height);
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LineTo(hDC, left, bottom - ell_height);
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MoveTo(hDC, left + ell_width, bottom);
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LineTo(hDC, right - ell_width, bottom);
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MoveTo(hDC, right, bottom - ell_height);
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LineTo(hDC, right, top + ell_height);
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MoveTo(hDC, right - ell_width, top);
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LineTo(hDC, left + ell_width, top);
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return TRUE;
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}
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/***********************************************************************
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* FillRect (USER.81)
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*/
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int FillRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
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{
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HBRUSH prevBrush;
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if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
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if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
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PatBlt( hdc, rect->left, rect->top,
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rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
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SelectObject( hdc, prevBrush );
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return 1;
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}
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/***********************************************************************
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* InvertRect (USER.82)
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*/
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void InvertRect( HDC hdc, LPRECT rect )
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{
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if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return;
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PatBlt( hdc, rect->left, rect->top,
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rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
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}
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/***********************************************************************
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* FrameRect (USER.83)
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*/
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int FrameRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
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{
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HBRUSH prevBrush;
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int left, top, right, bottom;
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc) return FALSE;
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if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
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if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
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left = XLPTODP( dc, rect->left );
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top = YLPTODP( dc, rect->top );
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right = XLPTODP( dc, rect->right );
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bottom = YLPTODP( dc, rect->bottom );
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if (DC_SetupGCForBrush( dc )) {
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PatBlt( hdc, rect->left, rect->top, 1,
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rect->bottom - rect->top, PATCOPY );
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PatBlt( hdc, rect->right - 1, rect->top, 1,
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rect->bottom - rect->top, PATCOPY );
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PatBlt( hdc, rect->left, rect->top,
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rect->right - rect->left, 1, PATCOPY );
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PatBlt( hdc, rect->left, rect->bottom - 1,
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rect->right - rect->left, 1, PATCOPY );
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}
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SelectObject( hdc, prevBrush );
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return 1;
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}
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/***********************************************************************
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* SetPixel (GDI.31)
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*/
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COLORREF SetPixel( HDC hdc, short x, short y, COLORREF color )
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{
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int pixel;
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PALETTEENTRY entry;
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc)
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{
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dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
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if (!dc) return 0;
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MF_MetaParam4(dc, META_SETPIXEL, x, y, HIWORD(color), LOWORD(color));
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return 1;
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}
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x = dc->w.DCOrgX + XLPTODP( dc, x );
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y = dc->w.DCOrgY + YLPTODP( dc, y );
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pixel = COLOR_ToPhysical( dc, color );
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GetPaletteEntries( dc->w.hPalette, pixel, 1, &entry );
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XSetForeground( display, dc->u.x.gc, pixel );
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XSetFunction( display, dc->u.x.gc, GXcopy );
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XDrawPoint( display, dc->u.x.drawable, dc->u.x.gc, x, y );
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return RGB( entry.peRed, entry.peGreen, entry.peBlue );
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}
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/***********************************************************************
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* GetPixel (GDI.83)
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*/
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COLORREF GetPixel( HDC hdc, short x, short y )
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{
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PALETTEENTRY entry;
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XImage * image;
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DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
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if (!dc) return 0;
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x = dc->w.DCOrgX + XLPTODP( dc, x );
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y = dc->w.DCOrgY + YLPTODP( dc, y );
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if ((x < 0) || (y < 0)) return 0;
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if (!(dc->w.flags & DC_MEMORY))
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{
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XWindowAttributes win_attr;
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if (!XGetWindowAttributes( display, dc->u.x.drawable, &win_attr ))
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return 0;
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if (win_attr.map_state != IsViewable) return 0;
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if ((x >= win_attr.width) || (y >= win_attr.height)) return 0;
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}
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image = XGetImage( display, dc->u.x.drawable, x, y,
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1, 1, AllPlanes, ZPixmap );
|
|
GetPaletteEntries( dc->w.hPalette, XGetPixel( image, 0, 0 ), 1, &entry );
|
|
XDestroyImage( image );
|
|
return RGB( entry.peRed, entry.peGreen, entry.peBlue );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PaintRgn (GDI.43)
|
|
*/
|
|
BOOL PaintRgn( HDC hdc, HRGN hrgn )
|
|
{
|
|
RECT box;
|
|
HRGN tmpVisRgn, prevVisRgn;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return FALSE;
|
|
|
|
/* Modify visible region */
|
|
|
|
prevVisRgn = SaveVisRgn( hdc );
|
|
if (prevVisRgn)
|
|
{
|
|
if (!(tmpVisRgn = CreateRectRgn( 0, 0, 0, 0 )))
|
|
{
|
|
RestoreVisRgn( hdc );
|
|
return FALSE;
|
|
}
|
|
CombineRgn( tmpVisRgn, prevVisRgn, hrgn, RGN_AND );
|
|
SelectVisRgn( hdc, tmpVisRgn );
|
|
DeleteObject( tmpVisRgn );
|
|
}
|
|
else SelectVisRgn( hdc, hrgn );
|
|
|
|
/* Fill the region */
|
|
|
|
GetClipBox( hdc, &box );
|
|
if (DC_SetupGCForBrush( dc ))
|
|
XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
|
|
dc->w.DCOrgX + box.left, dc->w.DCOrgY + box.top,
|
|
box.right-box.left, box.bottom-box.top );
|
|
|
|
/* Restore the visible region */
|
|
|
|
if (prevVisRgn) RestoreVisRgn( hdc );
|
|
else SelectVisRgn( hdc, 0 );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FillRgn (GDI.40)
|
|
*/
|
|
BOOL FillRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush )
|
|
{
|
|
BOOL retval;
|
|
HBRUSH prevBrush = SelectObject( hdc, hbrush );
|
|
if (!prevBrush) return FALSE;
|
|
retval = PaintRgn( hdc, hrgn );
|
|
SelectObject( hdc, prevBrush );
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* DrawFocusRect (USER.466)
|
|
*/
|
|
void DrawFocusRect( HDC hdc, LPRECT rc )
|
|
{
|
|
HPEN hOldPen;
|
|
int oldDrawMode, oldBkMode;
|
|
int left, top, right, bottom;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc) return;
|
|
|
|
left = XLPTODP( dc, rc->left );
|
|
top = YLPTODP( dc, rc->top );
|
|
right = XLPTODP( dc, rc->right );
|
|
bottom = YLPTODP( dc, rc->bottom );
|
|
|
|
hOldPen = (HPEN)SelectObject(hdc, sysColorObjects.hpenWindowText );
|
|
oldDrawMode = SetROP2(hdc, R2_XORPEN);
|
|
oldBkMode = SetBkMode(hdc, TRANSPARENT);
|
|
|
|
if (DC_SetupGCForPen( dc ))
|
|
XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
|
|
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
|
|
right-left-1, bottom-top-1 );
|
|
|
|
SetBkMode(hdc, oldBkMode);
|
|
SetROP2(hdc, oldDrawMode);
|
|
SelectObject(hdc, (HANDLE)hOldPen);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* DrawReliefRect (Not a MSWin Call)
|
|
*/
|
|
void DrawReliefRect( HDC hdc, RECT rect, int thickness, BOOL pressed )
|
|
{
|
|
HBRUSH hbrushOld;
|
|
int i;
|
|
|
|
hbrushOld = SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnShadow :
|
|
sysColorObjects.hbrushBtnHighlight );
|
|
for (i = 0; i < thickness; i++)
|
|
{
|
|
PatBlt( hdc, rect.left + i, rect.top,
|
|
1, rect.bottom - rect.top - i, PATCOPY );
|
|
PatBlt( hdc, rect.left, rect.top + i,
|
|
rect.right - rect.left - i, 1, PATCOPY );
|
|
}
|
|
|
|
SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnHighlight :
|
|
sysColorObjects.hbrushBtnShadow );
|
|
for (i = 0; i < thickness; i++)
|
|
{
|
|
PatBlt( hdc, rect.right - i - 1, rect.top + i,
|
|
1, rect.bottom - rect.top - i, PATCOPY );
|
|
PatBlt( hdc, rect.left + i, rect.bottom - i - 1,
|
|
rect.right - rect.left - i, 1, PATCOPY );
|
|
}
|
|
|
|
SelectObject( hdc, hbrushOld );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* Polyline (GDI.37)
|
|
*/
|
|
BOOL Polyline (HDC hdc, LPPOINT pt, int count)
|
|
{
|
|
register int i;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return FALSE;
|
|
MF_MetaPoly(dc, META_POLYLINE, pt, count);
|
|
return TRUE;
|
|
}
|
|
|
|
if (DC_SetupGCForPen( dc ))
|
|
{
|
|
for (i = 0; i < count-1; i ++)
|
|
XDrawLine (display, dc->u.x.drawable, dc->u.x.gc,
|
|
dc->w.DCOrgX + XLPTODP(dc, pt [i].x),
|
|
dc->w.DCOrgY + YLPTODP(dc, pt [i].y),
|
|
dc->w.DCOrgX + XLPTODP(dc, pt [i+1].x),
|
|
dc->w.DCOrgY + YLPTODP(dc, pt [i+1].y));
|
|
XDrawLine (display, dc->u.x.drawable, dc->u.x.gc,
|
|
dc->w.DCOrgX + XLPTODP(dc, pt [count-1].x),
|
|
dc->w.DCOrgY + YLPTODP(dc, pt [count-1].y),
|
|
dc->w.DCOrgX + XLPTODP(dc, pt [0].x),
|
|
dc->w.DCOrgY + YLPTODP(dc, pt [0].y));
|
|
}
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* Polygon (GDI.36)
|
|
*/
|
|
BOOL Polygon (HDC hdc, LPPOINT pt, int count)
|
|
{
|
|
register int i;
|
|
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
|
|
XPoint *points = (XPoint *) malloc (sizeof (XPoint) * count+1);
|
|
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return FALSE;
|
|
MF_MetaPoly(dc, META_POLYGON, pt, count);
|
|
return TRUE;
|
|
}
|
|
|
|
if (DC_SetupGCForBrush( dc ))
|
|
{
|
|
|
|
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];
|
|
|
|
XFillPolygon( display, dc->u.x.drawable, dc->u.x.gc,
|
|
points, count, Complex, CoordModeOrigin);
|
|
|
|
if (DC_SetupGCForPen ( dc ))
|
|
{
|
|
XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
|
|
points, count, CoordModeOrigin );
|
|
}
|
|
}
|
|
free ((void *) points);
|
|
return (TRUE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* FloodFill_rec -- FloodFill helper function
|
|
*
|
|
* Just does a recursive flood fill:
|
|
* this is /not/ efficent -- a better way would be to draw
|
|
* an entire line at a time, but this will do for now.
|
|
*/
|
|
static BOOL FloodFill_rec(XImage *image, int x, int y,
|
|
int orgx, int orgy, int endx, int endy,
|
|
Pixel borderp, Pixel fillp)
|
|
{
|
|
Pixel testp;
|
|
|
|
if (x > endx || x < orgx || y > endy || y < orgy)
|
|
return FALSE;
|
|
XPutPixel(image, x, y, fillp);
|
|
|
|
if ((x+1 <= endx) && (y+1 <= endy)) {
|
|
testp = XGetPixel(image, x+1, y+1);
|
|
if (testp != borderp && testp != fillp)
|
|
FloodFill_rec(image, x+1, y+1, orgx, orgy,
|
|
endx, endy, borderp, fillp);
|
|
}
|
|
if ((x+1 <= endx) && (y-1 >= orgy)) {
|
|
testp = XGetPixel(image, x+1, y-1);
|
|
if (testp != borderp && testp != fillp)
|
|
FloodFill_rec(image, x+1, y-1, orgx, orgy,
|
|
endx, endy, borderp, fillp);
|
|
}
|
|
if ((x-1 >= orgx) && (y+1 <= endy)) {
|
|
testp = XGetPixel(image, x-1, y+1);
|
|
if (testp != borderp && testp != fillp)
|
|
FloodFill_rec(image, x-1, y+1, orgx, orgy,
|
|
endx, endy, borderp, fillp);
|
|
}
|
|
if ((x-1 >= orgx) && (y-1 >= orgy)) {
|
|
testp = XGetPixel(image, x-1, y-1);
|
|
if (testp != borderp && testp != fillp)
|
|
FloodFill_rec(image, x-1, y-1, orgx, orgy,
|
|
endx, endy, borderp, fillp);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* FloodFill (GDI.25)
|
|
*/
|
|
BOOL FloodFill(HDC hdc, short x, short y, DWORD crColor)
|
|
{
|
|
Pixel boundrypixel;
|
|
int imagex, imagey;
|
|
XImage *image;
|
|
DC *dc;
|
|
|
|
#ifdef DEBUG_GRAPHICS
|
|
printf("FloodFill %x %d,%d %x\n", hdc, x, y, crColor);
|
|
#endif
|
|
dc = (DC *) GDI_GetObjPtr(hdc, DC_MAGIC);
|
|
if (!dc)
|
|
{
|
|
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
|
|
if (!dc) return FALSE;
|
|
MF_MetaParam4(dc, META_FLOODFILL, x, y, HIWORD(crColor),
|
|
LOWORD(crColor));
|
|
return TRUE;
|
|
}
|
|
|
|
x = dc->w.DCOrgX + XLPTODP(dc, x);
|
|
y = dc->w.DCOrgY + YLPTODP(dc, y);
|
|
|
|
if (x < dc->w.DCOrgX || x > dc->w.DCOrgX + dc->w.DCSizeX ||
|
|
y < dc->w.DCOrgY || y > dc->w.DCOrgY + dc->w.DCSizeY)
|
|
return FALSE;
|
|
|
|
if (!DC_SetupGCForBrush(dc))
|
|
return FALSE;
|
|
|
|
boundrypixel = GetNearestPaletteIndex( dc->w.hPalette, crColor );
|
|
|
|
image = XGetImage(display, dc->u.x.drawable,
|
|
dc->w.DCOrgX, dc->w.DCOrgY,
|
|
dc->w.DCSizeX, dc->w.DCSizeY, AllPlanes, ZPixmap);
|
|
if (XGetPixel(image, x, y) == boundrypixel)
|
|
return FALSE;
|
|
if (!FloodFill_rec(image, x, y,
|
|
0, 0,
|
|
dc->w.DCSizeX-1,
|
|
dc->w.DCSizeY-1,
|
|
boundrypixel, dc->u.x.brush.pixel)) {
|
|
XDestroyImage(image);
|
|
return FALSE;
|
|
}
|
|
|
|
XPutImage(display, dc->u.x.drawable, dc->u.x.gc, image,
|
|
0, 0,
|
|
dc->w.DCOrgX, dc->w.DCOrgY,
|
|
dc->w.DCSizeX, dc->w.DCSizeY);
|
|
XDestroyImage(image);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|