323 lines
9.9 KiB
C
323 lines
9.9 KiB
C
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/*****************************************************************************
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*
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* beziers - Entry points for Win32 to Win 16 converter
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*
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* Date: 7/1/91
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* Author: Jeffrey Newman (c-jeffn)
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*
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* Copyright 1991 Microsoft Corp
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*****************************************************************************/
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#include "precomp.h"
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#pragma hdrstop
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BOOL PolyBezierCommon(PLOCALDC pLocalDC, LPPOINT pptl, PBYTE pb, DWORD cptl, DWORD mrType) ;
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/***************************************************************************
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* PolyDraw - Win32 to Win16 Metafile Converter Entry Point
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**************************************************************************/
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BOOL WINAPI DoPolyDraw
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(
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PLOCALDC pLocalDC,
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LPPOINT pptl,
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PBYTE pb,
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DWORD cptl
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)
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{
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return(PolyBezierCommon(pLocalDC, pptl, pb, cptl, EMR_POLYDRAW));
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}
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/***************************************************************************
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* PolyBezier - Win32 to Win16 Metafile Converter Entry Point
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**************************************************************************/
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BOOL WINAPI DoPolyBezier
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(
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PLOCALDC pLocalDC,
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LPPOINT pptl,
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DWORD cptl
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)
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{
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return(PolyBezierCommon(pLocalDC, pptl, (PBYTE) NULL, cptl, EMR_POLYBEZIER));
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}
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/***************************************************************************
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* PolyBezierTo - Win32 to Win16 Metafile Converter Entry Point
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**************************************************************************/
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BOOL WINAPI DoPolyBezierTo
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(
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PLOCALDC pLocalDC,
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LPPOINT pptl,
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DWORD cptl
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)
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{
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return(PolyBezierCommon(pLocalDC, pptl, (PBYTE) NULL, cptl, EMR_POLYBEZIERTO));
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}
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/***************************************************************************
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* PolyBezierCommon - Common code for PolyDraw, PolyBezier and PolyBezierTo
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**************************************************************************/
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BOOL PolyBezierCommon(PLOCALDC pLocalDC, LPPOINT pptl, PBYTE pb, DWORD cptl, DWORD mrType)
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{
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BOOL b ;
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// If we're recording the drawing order for a path
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// then just pass the drawing order to the helper DC.
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// Do not emit any Win16 drawing orders.
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if (pLocalDC->flags & RECORDING_PATH)
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{
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// On Win9x transform the points with the WorldToPage transform
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// before calling the HelperDC functions
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if (pfnSetVirtualResolution == NULL)
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{
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if (!bXformWorkhorse((PPOINTL) pptl, cptl, &pLocalDC->xformRWorldToRDev))
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return FALSE;
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}
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switch (mrType)
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{
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case EMR_POLYBEZIER:
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b = PolyBezier(pLocalDC->hdcHelper, pptl, cptl) ;
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break ;
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case EMR_POLYBEZIERTO:
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b = PolyBezierTo(pLocalDC->hdcHelper, pptl, cptl) ;
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break ;
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case EMR_POLYDRAW:
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b = PolyDraw(pLocalDC->hdcHelper, pptl, pb, cptl) ;
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break ;
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default:
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b = FALSE;
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RIPS(("MF3216: PolyBezierCommon, bad mrType\n")) ;
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break ;
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}
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ASSERTGDI(b, "MF3216: PolyBezierCommon, in path render failed\n") ;
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return (b) ;
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}
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// Call the common curve renderer.
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return
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(
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bRenderCurveWithPath(pLocalDC, pptl, pb, cptl,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0.0f, 0.0f, mrType)
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);
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}
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/***************************************************************************
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* bRenderCurveWithPath - Renders a curve or area using the path api.
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* The supported curves and areas are PolyDraw, PolyBezier, PolyBezierTo,
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* AngleArc, Arc, Chord, Pie, Ellipse, Rectangle, and RoundRect.
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**************************************************************************/
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BOOL bRenderCurveWithPath
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(
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PLOCALDC pLocalDC,
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LPPOINT pptl,
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PBYTE pb,
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DWORD cptl,
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INT x1,
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INT y1,
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INT x2,
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INT y2,
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INT x3,
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INT y3,
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INT x4,
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INT y4,
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DWORD nRadius,
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FLOAT eStartAngle,
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FLOAT eSweepAngle,
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DWORD mrType
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)
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{
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BOOL b = FALSE;
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INT iPathType;
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POINTL ppts[4] = {x1, y1, x2, y2, x3, y3, x4, y4};
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if (pfnSetVirtualResolution == NULL)
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{
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// On Win9x tranform the points before passing them to the DC
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if (!bXformWorkhorse((PPOINTL) pptl, cptl, &pLocalDC->xformRWorldToRDev))
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{
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RIPS("GPMF3216: bRenderCurveWithPath, BeginPath failed\n");
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goto exit_bRenderCurveWithPath;
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}
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if (!bXformWorkhorse(ppts, 4, &pLocalDC->xformRWorldToRDev))
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{
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RIPS("GPMF3216: bRenderCurveWithPath, BeginPath failed\n");
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goto exit_bRenderCurveWithPath;
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}
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}
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// We don't do curves in a path bracket here. They should be
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// taken care of by the caller.
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ASSERTGDI(!(pLocalDC->flags & RECORDING_PATH),
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"MF3216: bRenderCurveWithPath, cannot be in a path bracket\n");
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// Save the helper DC first.
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// This is to prevent us from accidentally deleteing the current path
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// in the helper DC when we create another path to render the curve.
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// E.g. BeginPath, Polyline, EndPath, PolyBezier, StrokePath.
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if (!SaveDC(pLocalDC->hdcHelper))
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{
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RIPS("MF3216: bRenderCurveWithPath, SaveDC failed\n");
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return(FALSE);
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}
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// Create the path for the curve and stroke it.
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// Be careful not to modify the states of the LocalDC especially in
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// DoRenderPath below.
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// Note that BeginPath uses the previous current position. So this
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// code will work correctly in the case of PolyBezierTo, PolyDraw
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// and AngleArc.
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// Begin the path.
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b = BeginPath(pLocalDC->hdcHelper);
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if (!b)
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{
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RIPS("MF3216: bRenderCurveWithPath, BeginPath failed\n");
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goto exit_bRenderCurveWithPath;
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}
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// Do the curve.
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switch (mrType)
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{
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case EMR_POLYBEZIER:
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iPathType = EMR_STROKEPATH;
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b = PolyBezier(pLocalDC->hdcHelper, pptl, cptl);
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break;
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case EMR_POLYBEZIERTO:
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iPathType = EMR_STROKEPATH;
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b = PolyBezierTo(pLocalDC->hdcHelper, pptl, cptl);
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break;
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case EMR_POLYDRAW:
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iPathType = EMR_STROKEPATH;
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b = PolyDraw(pLocalDC->hdcHelper, pptl, pb, cptl);
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break;
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case EMR_ANGLEARC:
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iPathType = EMR_STROKEPATH;
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b = AngleArc(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, nRadius, eStartAngle, eSweepAngle);
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break;
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case EMR_ARC:
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iPathType = EMR_STROKEPATH;
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b = Arc(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y,
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ppts[2].x, ppts[2].y, ppts[3].x, ppts[3].y);
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break;
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case EMR_CHORD:
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iPathType = EMR_STROKEANDFILLPATH;
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b = Chord(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y,
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ppts[2].x, ppts[2].y, ppts[3].x, ppts[3].y);
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break;
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case EMR_PIE:
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iPathType = EMR_STROKEANDFILLPATH;
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b = Pie(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y,
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ppts[2].x, ppts[2].y, ppts[3].x, ppts[3].y);
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break;
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case EMR_ELLIPSE:
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iPathType = EMR_STROKEANDFILLPATH;
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b = Ellipse(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y);
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break;
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case EMR_RECTANGLE:
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iPathType = EMR_STROKEANDFILLPATH;
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b = Rectangle(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y) ;
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break;
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case EMR_ROUNDRECT:
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iPathType = EMR_STROKEANDFILLPATH;
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b = RoundRect(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, ppts[1].x, ppts[1].y,
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ppts[2].x, ppts[2].y) ;
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break;
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default:
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b = FALSE;
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RIPS("MF3216: bRenderCurveWithPath, bad mrType");
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break;
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}
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if (!b)
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{
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RIPS("MF3216: bRenderCurveWithPath, render failed\n");
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goto exit_bRenderCurveWithPath;
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}
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// End the path
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b = EndPath(pLocalDC->hdcHelper);
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if (!b)
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{
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RIPS("MF3216: bRenderCurveWithPath, EndPath failed\n");
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goto exit_bRenderCurveWithPath;
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}
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// Stroke or fill the path.
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b = DoRenderPath(pLocalDC, iPathType, FALSE);
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if (!b)
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{
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RIPS("MF3216: bRenderCurveWithPath, DoRenderPath failed\n");
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goto exit_bRenderCurveWithPath;
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}
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exit_bRenderCurveWithPath:
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// Restore the helper DC.
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if (!RestoreDC(pLocalDC->hdcHelper, -1))
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ASSERTGDI(FALSE, "MF3216: bRenderCurveWithPath, RestoreDC failed\n") ;
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// If this is a PolyBezeirTo, PolyDraw or AngleArc, make the call to the
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// helper DC to update its current position.
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if (b)
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{
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switch (mrType)
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{
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case EMR_POLYBEZIER:
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case EMR_ARC:
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case EMR_CHORD:
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case EMR_PIE:
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case EMR_ELLIPSE:
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case EMR_RECTANGLE:
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case EMR_ROUNDRECT: // no need to update the helper DC
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break ;
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case EMR_POLYBEZIERTO:
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(void) PolyBezierTo(pLocalDC->hdcHelper, pptl, cptl) ;
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break ;
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case EMR_POLYDRAW:
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(void) PolyDraw(pLocalDC->hdcHelper, pptl, pb, cptl) ;
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break ;
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case EMR_ANGLEARC:
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(void) AngleArc(pLocalDC->hdcHelper, ppts[0].x, ppts[0].y, nRadius, eStartAngle, eSweepAngle);
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break ;
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default:
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RIPS("MF3216: bRenderCurveWithPath, bad mrType");
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break;
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}
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}
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// Return the result.
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return(b);
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}
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