/* * R : A Computer Language for Statistical Data Analysis * Copyright (C) 1998--1999 Guido Masarotto * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* A version of drawing.c without current/state. More safe in case of multiple redrawing */ #include "internal.h" static HDC GETHDC(drawing d) { if ( (d->kind == PrinterObject)|| (d->kind == MetafileObject)) { HDC dc = (HDC) d->handle ; SelectObject(dc, GetStockObject(NULL_PEN)); SelectObject(dc, GetStockObject(NULL_BRUSH)); return dc ; } else return get_context(d); } /* * Some clipping functions. */ rect ggetcliprect(drawing d) { RECT R; rect r; HDC dc = GETHDC(d); GetClipBox(dc, &R); r.x = R.left; r.y = R.top; r.width = R.right - R.left; r.height = R.bottom - R.top; return r; } void gsetcliprect(drawing d, rect r) { HRGN rgn; HDC dc = GETHDC(d); rgn = CreateRectRgn(r.x, r.y, r.x + r.width, r.y + r.height); SelectClipRgn(dc, rgn); DeleteObject(rgn); } void gbitblt(drawing db, drawing sb, point p, rect r) { HDC src; HDC dst; dst = GETHDC(db); src = GETHDC(sb); BitBlt(dst, p.x, p.y, r.width, r.height, src, r.x, r.y, SRCCOPY); } /* dp gives the amount to scroll; r the full rectangle to scroll */ void gscroll(drawing d, point dp, rect r) { HDC dc = GETHDC(d); RECT rr ; rr.left = r.x; rr.top = r.y; rr.right = r.x + r.width; rr.bottom = r.y + r.height; ScrollDC(dc, dp.x , dp.y , &rr, &rr, 0, NULL); } void ginvert(drawing d, rect r) { HDC dc = GETHDC(d); PatBlt(dc, r.x, r.y, r.width, r.height, DSTINVERT); } rgb ggetpixel(drawing d, point p) { rgb c; HDC dc = GETHDC(d); c = GetPixel(dc, p.x, p.y); c = ((c&0x000000FFL)<<16) | (c&0x0000FF00L) | ((c&0x00FF0000L)>>16); return c; } static COLORREF getwinrgb(drawing d, rgb c) { int r, g, b; long luminance; int depth; r = (int) ((c >> 16) & 0x000000FFL); g = (int) ((c >> 8) & 0x000000FFL); b = (int) ((c >> 0) & 0x000000FFL); depth = getdepth(d); if (depth <= 2) /* map to black or white, or grey if c == Grey */ { luminance = (r*3 + g*5 + b) / 9; if (luminance > 0x0087) r = g = b = 0x00FF; else if (luminance <= 0x0077) r = g = b = 0x0000; else r = g = b = 0x0080; c = rgb(r, g, b); } return RGB(r, g, b); } void gsetpixel(drawing d, point p, rgb c) { HDC dc = GETHDC(d); HBRUSH br = CreateSolidBrush(getwinrgb(d, c)); fix_brush(dc, d, br); SelectObject(dc, br); PatBlt(dc, p.x, p.y, 1, 1, PATCOPY); SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } static void CALLBACK gLineHelper(int x, int y, LPARAM aa) { int i, *a; a = (int *)aa; if (a[0]) { for (i = 0; i < a[6]; i++) PatBlt((HDC)a[8], x + i*a[4], y + i*a[5], 1, 1, PATCOPY); } a[1] += 1; if (a[1] >= a[2]) { a[1] = 0; a[2] = 0; while (!a[2]) { double pd; a[3] = (a[3] + 4) % 32; pd = ((a[7] >> a[3]) & 15) * a[6]; if (pd > 0) { a[2] = (pd * GetDeviceCaps((HDC)a[8], LOGPIXELSX)) / 72.0 + 0.5; if (a[2] < 1) a[2] = 1; } else a[2] = 0; a[0] = a[0] ? 0 : 1; } } } void gdrawline(drawing d, int width, int style, rgb c, point p1, point p2) { point p[2]; p[0] = p1; p[1] = p2; gdrawpolyline( d, width, style, c, p, 2, 0); } void gdrawpolyline(drawing d, int width, int style, rgb c, point p[], int n, int closepath) { int a[9]; HDC dc = GETHDC(d); COLORREF winrgb = getwinrgb(d, c); int i; if (n < 2) return; if (!style) { HPEN gpen = CreatePen(PS_INSIDEFRAME, width, winrgb); SelectObject(dc, gpen); SetROP2(dc, R2_COPYPEN); MoveToEx(dc, p[0].x, p[0].y, NULL); for (i = 1; i < n ; i++) LineTo(dc, p[i].x, p[i].y); if (closepath) LineTo(dc, p[0].x, p[0].y); SelectObject(dc, GetStockObject(NULL_PEN)); DeleteObject(gpen); } else { point pshift; double pd; HBRUSH br = CreateSolidBrush(getwinrgb(d,c)); fix_brush(dc, d, br); SelectObject(dc, br); a[0] = 1; a[1] = 0; pd =(style & 15)*width; a[2] = (pd * GetDeviceCaps(dc,LOGPIXELSX)) / 72.0 + 0.5; if (a[2] < 1) a[2] = 1; a[3] = 0; a[6] = width; a[7] = style; a[8] = (int) dc; for ( i = 1; i < n; i++) { if (p[i-1].x != p[i].x) { a[4] = 0; a[5] = 1; pshift = pt(0, width/2); } else { a[4] = 1; a[5] = 0; pshift = pt(width/2,0); } LineDDA(p[i-1].x, p[i-1].y, p[i].x, p[i].y, gLineHelper, (LPARAM) a); } if (closepath) { if (p[n-1].x != p[0].x) { a[4] = 0; a[5] = 1; pshift = pt(0, width/2); } else { a[4] = 1; a[5] = 0; pshift = pt(width/2,0); } LineDDA(p[n-1].x, p[n-1].y, p[0].x, p[0].y, gLineHelper, (LPARAM) a); } SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } } void gdrawrect(drawing d, int width, int style, rgb c, rect r) { int x0 = r.x; int y0 = r.y; int x1 = r.x + r.width; int y1 = r.y + r.height; point p[4]; p[0] = pt(x0,y0); p[1] = pt(x1,y0); p[2] = pt(x1,y1); p[3] = pt(x0,y1); gdrawpolyline(d, width, style, c, p, 4, 1); } void gfillrect(drawing d, rgb fill, rect r) { HDC dc = GETHDC(d); HBRUSH br = CreateSolidBrush(getwinrgb(d, fill)); fix_brush(dc, d, br); SelectObject(dc, br); PatBlt(dc, r.x, r.y, r.width, r.height, PATCOPY); SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } void gdrawellipse(drawing d, int width, rgb border, rect r) { HDC dc = GETHDC(d); HPEN gpen = CreatePen(PS_INSIDEFRAME, width, getwinrgb(d,border)); SelectObject(dc, gpen); SetROP2(dc, R2_COPYPEN); Ellipse(dc, r.x, r.y, r.x+r.width, r.y+r.height); SelectObject(dc, GetStockObject(NULL_PEN)); DeleteObject(gpen); } void goldfillellipse(drawing d, rgb fill, rect r) { HDC dc = GETHDC(d); HBRUSH br = CreateSolidBrush(getwinrgb(d, fill)); fix_brush(dc, d, br); SelectObject(dc, br); Ellipse(dc, r.x, r.y, r.x+r.width, r.y+r.height); SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } #ifndef fastfillrect #define fastfillrect(x, y, w, h) PatBlt(dc, (x), (y), (w), (h), mode) #endif void gfillellipse(drawing d, rgb fill, rect r) { /* e(x,y) = b*b*x*x + a*a*y*y - a*a*b*b */ register long mode = PATCOPY; int w_odd = (r.width & 0x0001); int h_odd = (r.height & 0x0001); int a = r.width >> 1; int b = r.height >> 1; point c = pt(r.x+a,r.y+b); int x = 0; int y = b; long a2 = a*a; long b2 = b*b; long xcrit = ((a2+a2+a2) >> 2) + 1; long ycrit = ((b2+b2+b2) >> 2) + 1; long t = b2 + a2 - (a2+a2)*b; /* t = e(x+1,y-1) */ long dxt = b2*(3+x+x); long dyt = a2*(3-y-y); int d2xt = b2+b2; int d2yt = a2+a2; int stored = 0; int sx = 0, sy = 0, sh = 0; /* stored values of x, y, height */ HDC dc; HBRUSH br; if ((r.width > 31) && (r.height > 31)) { goldfillellipse(d, fill, r); return; } if ((r.width < 3) || (r.height < 3)) { gfillrect(d, fill, r); return; } dc = GETHDC(d); br = CreateSolidBrush(getwinrgb(d, fill)); fix_brush(dc, d, br); SelectObject(dc, br); if (w_odd == 0) { fastfillrect(c.x-1,c.y-b,2,r.height); } while (y > 0) { if (stored) { if (sx != x) { /* output stored rect */ fastfillrect(c.x-sx,c.y-sy, sx+sx+w_odd,sh); fastfillrect(c.x-sx,c.y+sy+h_odd-sh, sx+sx+w_odd,sh); stored = 0; } else /* increment height of stored rect */ sh++; } if (t + a2*y < xcrit) { /* e(x+1,y-1/2) <= 0 */ /* move left and right to encounter edge */ x += 1; t += dxt; dxt += d2xt; } else if (t - b2*x >= ycrit) { /* e(x+1/2,y-1) > 0 */ /* drop down one line */ if (!stored) { sx = x; sy = y; sh = 1; stored = 1; } y -= 1; t += dyt; dyt += d2yt; } else { /* drop diagonally down and out */ if (!stored) { sx = x; sy = y; sh = 1; stored = 1; } x += 1; y -= 1; t += dxt + dyt; dxt += d2xt; dyt += d2yt; } } if (stored) { /* output stored rectangle */ fastfillrect(c.x-sx, c.y-sy, sx+sx+w_odd, sh); fastfillrect(c.x-sx, c.y+sy+h_odd-sh, sx+sx+w_odd, sh); stored = 0; } if (x <= a){ fastfillrect(c.x-a, c.y-y, a+a+w_odd, 1); fastfillrect(c.x-a, c.y+y-1+h_odd, a+a+w_odd, 1); } SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } void gfillpolygon(drawing d, rgb fill, point *p, int n) { HDC dc = GETHDC(d); HBRUSH br = CreateSolidBrush(getwinrgb(d,fill)); fix_brush(dc, d, br); SelectObject(dc, br); Polygon(dc, (POINT FAR *) p, n); SelectObject(dc, GetStockObject(NULL_BRUSH)); DeleteObject(br); } int gdrawstr(drawing d, font f, rgb c, point p, char *s) { POINT curr_pos; int width; HFONT old; HDC dc = GETHDC(d); SetTextColor(dc, getwinrgb(d,c)); old = SelectObject(dc, f->handle); MoveToEx(dc, p.x, p.y, NULL); SetBkMode(dc, TRANSPARENT); SetTextAlign(dc, TA_LEFT | TA_TOP | TA_UPDATECP); TextOut(dc, p.x, p.y, s, strlen(s)); GetCurrentPositionEx(dc, &curr_pos); width = curr_pos.x - p.x; SelectObject(dc, old); return width; } rect gstrrect(drawing d, font f, char *s) { SIZE size; HFONT old; HDC dc; if (! f) f = SystemFont; if (d) dc = GETHDC(d); else dc = GetDC(0); old = SelectObject(dc, f->handle); GetTextExtentPoint32(dc, (LPSTR)s, strlen(s), &size); SelectObject(dc, old); if (!d) ReleaseDC(0,dc); return rect(0, 0, size.cx, size.cy); } point gstrsize(drawing d, font f, char *s) { rect r = gstrrect(d, f, s); return pt(r.width, r.height); } int gstrwidth(drawing d, font f, char *s) { rect r = gstrrect(d,f,s); return r.width; } int ghasfixedwidth(font f) { TEXTMETRIC tm; HFONT old; HDC dc = GetDC(0); old = SelectObject(dc, (HFONT)f->handle); GetTextMetrics(dc, &tm); SelectObject(dc, old); ReleaseDC(0,dc); return !(tm.tmPitchAndFamily & TMPF_FIXED_PITCH); } void gcharmetric(drawing d, font f, int c, int *ascent, int *descent, int *width) { int first, last, extra; TEXTMETRIC tm; HFONT old; HDC dc = GETHDC(d); old = SelectObject(dc, (HFONT)f->handle); GetTextMetrics(dc, &tm); first = tm.tmFirstChar; last = tm.tmLastChar; extra = tm.tmExternalLeading + tm.tmInternalLeading - 1; if(c < 0) { /* used for setting cra */ SIZE size; char* cc="M"; GetTextExtentPoint32(dc,(LPSTR) cc, 1, &size); *descent = tm.tmDescent ; *ascent = size.cy - *descent; *width = size.cx; if(*width > size.cy) *width = size.cy; } else if(c == 0) { *descent = tm.tmDescent ; *ascent = tm.tmHeight - *descent - extra ; *width = tm.tmMaxCharWidth ; } else if((first <= c) && (c <= last)) { SIZE size; GetTextExtentPoint32(dc,(LPSTR) &c, 1, &size); *descent = tm.tmDescent ; *ascent = size.cy - *descent - extra ; *width = size.cx; /* Under NT, ' ' gives 0 ascent and descent, which seems correct but this : (i) makes R engine to center in random way; (ii) doesn't correspond to what 98 and X do (' ' is there high as the full font) */ if ((c!=' ') && (tm.tmPitchAndFamily & TMPF_TRUETYPE)) { GLYPHMETRICS gm; MAT2 m2; m2.eM11.value = m2.eM22.value = (WORD) 1 ; m2.eM21.value = m2.eM12.value = (WORD) 0 ; m2.eM11.fract = m2.eM12.fract = m2.eM21.fract = m2.eM22.fract = (short) 0 ; if (GetGlyphOutline(dc,c,GGO_METRICS,&gm,0,NULL,&m2) != GDI_ERROR) { *descent = gm.gmBlackBoxY - gm.gmptGlyphOrigin.y ; *ascent = gm.gmptGlyphOrigin.y + 1; } } } else { *ascent = 0; *descent = 0; *width = 0; } SelectObject(dc, old); } font gnewfont(drawing d, char *face, int style, int size, double rot) { font obj; HFONT hf; LOGFONT lf; double pixs; pixs = size/72.0; if ((rot <= 45.0) || ((rot > 135) && (rot <= 225)) || (rot > 315)) pixs = pixs * devicepixelsy(d); else pixs = pixs * devicepixelsx(d); lf.lfHeight = (int) -(pixs + 0.5); lf.lfWidth = 0 ; lf.lfEscapement = lf.lfOrientation = (int) 10*rot; lf.lfWeight = FW_NORMAL; lf.lfItalic = lf.lfUnderline = lf.lfStrikeOut = 0; if ((! strcmp(face, "Symbol")) || (! strcmp(face, "Wingdings"))) lf.lfCharSet = SYMBOL_CHARSET; else lf.lfCharSet = ANSI_CHARSET; lf.lfClipPrecision = CLIP_DEFAULT_PRECIS; lf.lfQuality = DEFAULT_QUALITY; lf.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE; if ((strlen(face) > 1) && (face[0] == 'T') && (face[1] == 'T')) { char *pf; lf.lfOutPrecision = OUT_TT_ONLY_PRECIS; for (pf = &face[2]; isspace(*pf) ; pf++); strncpy(lf.lfFaceName, pf, LF_FACESIZE-1); } else { lf.lfOutPrecision = OUT_DEFAULT_PRECIS; strncpy(lf.lfFaceName, face, LF_FACESIZE-1); } if (style & Italic) lf.lfItalic = 1; if (style & Bold) lf.lfWeight = FW_BOLD; if (style & FixedWidth) lf.lfPitchAndFamily |= FIXED_PITCH; if (style & SansSerif) lf.lfPitchAndFamily |= FF_SWISS; if ((hf = CreateFontIndirect(&lf)) == 0) return NULL; obj = new_font_object(hf); if (obj) obj->text = new_string(face); if (d && ((d->kind == PrinterObject) || (d->kind == MetafileObject))) { TEXTMETRIC tm; HFONT old = SelectObject((HDC)d->handle, hf); GetTextMetrics((HDC)d->handle, &tm); obj->rect.width = tm.tmAveCharWidth; obj->rect.height = tm.tmHeight; obj->rect.x = tm.tmAscent - tm.tmInternalLeading; obj->rect.y = tm.tmDescent; SelectObject((HDC)d->handle, old); } return (font) obj; } static int measuredev(drawing dev, int what) { HDC hDC; int n; if (dev) hDC=GETHDC(dev); else hDC=GetDC(NULL); n = GetDeviceCaps(hDC, what); if (!dev) ReleaseDC(NULL, hDC); return n; } #define MEASUREDEV(a) {return measuredev(dev,a);} int devicewidth(drawing dev) MEASUREDEV(HORZRES) int deviceheight(drawing dev) MEASUREDEV(VERTRES) int devicewidthmm(drawing dev) MEASUREDEV(HORZSIZE) int deviceheightmm(drawing dev) MEASUREDEV(VERTSIZE) int devicepixelsx(drawing dev) MEASUREDEV(LOGPIXELSX) int devicepixelsy(drawing dev) MEASUREDEV(LOGPIXELSY)