From 62efee2345f38832451ce857ef72beee40686eee Mon Sep 17 00:00:00 2001
From: Stephane Lussier <stephane@macadamian.com>
Date: Wed, 13 Oct 1999 13:58:45 +0000
Subject: [PATCH] Fixed the clipping for the postscript driver and turned it on
 (by setting PSDRV_SetDeviceClipping in the function table).

---
 graphics/psdrv/clipping.c | 22 ++++++++++++++++++++--
 graphics/psdrv/init.c     |  2 +-
 graphics/psdrv/ps.c       | 22 ++++++++++++++++++++--
 include/psdrv.h           |  4 +++-
 4 files changed, 44 insertions(+), 6 deletions(-)

diff --git a/graphics/psdrv/clipping.c b/graphics/psdrv/clipping.c
index 265f8f30a3b..5a9eff6434b 100644
--- a/graphics/psdrv/clipping.c
+++ b/graphics/psdrv/clipping.c
@@ -42,7 +42,24 @@ VOID PSDRV_SetDeviceClipping( DC *dc )
 
     GetRegionData(dc->w.hGCClipRgn, size, rgndata);
 
-    if (rgndata->rdh.nCount > 0)
+    PSDRV_WriteInitClip(dc);
+
+    /* check for NULL region */
+    if (rgndata->rdh.nCount == 0)
+    {
+        /* set an empty clip path. */
+        PSDRV_WriteRectClip(dc, 0, 0, 0, 0);
+    }
+    /* optimize when it is a simple region */
+    else if (rgndata->rdh.nCount == 1)
+    {
+        RECT *pRect = (RECT *)rgndata->Buffer;
+
+        PSDRV_WriteRectClip(dc, pRect->left, pRect->top, 
+                            pRect->right - pRect->left, 
+                            pRect->bottom - pRect->top);        
+    }
+    else
     {
         INT i;
         RECT *pRect = (RECT *)rgndata->Buffer;
@@ -60,9 +77,10 @@ VOID PSDRV_SetDeviceClipping( DC *dc )
             PSDRV_WriteArrayPut(dc, szArrayName, i * 4 + 3, 
                                 pRect->bottom - pRect->top);
         }
+
+        PSDRV_WriteRectClip2(dc, szArrayName);
     }
     
-    PSDRV_WriteRectClip(dc, szArrayName);
     HeapFree( GetProcessHeap(), 0, rgndata );
     return;
 }
diff --git a/graphics/psdrv/init.c b/graphics/psdrv/init.c
index 4b8c1382632..f7d104d7ef0 100644
--- a/graphics/psdrv/init.c
+++ b/graphics/psdrv/init.c
@@ -78,7 +78,7 @@ static const DC_FUNCTIONS PSDRV_Funcs =
     NULL,                            /* pSelectPalette */
     PSDRV_SetBkColor,                /* pSetBkColor */
     NULL,                            /* pSetBkMode */
-    NULL,                            /* pSetDeviceClipping */
+    PSDRV_SetDeviceClipping,         /* pSetDeviceClipping */
     NULL,                            /* pSetDIBitsToDevice */
     NULL,                            /* pSetMapMode (optional) */
     NULL,                            /* pSetMapperFlags */
diff --git a/graphics/psdrv/ps.c b/graphics/psdrv/ps.c
index f7e5aab22ec..9c0b2c736d9 100644
--- a/graphics/psdrv/ps.c
+++ b/graphics/psdrv/ps.c
@@ -161,10 +161,16 @@ static char psclosepath[] =
 static char psclip[] =
 "clip\n";
 
+static char psinitclip[] =
+"initclip\n";
+
 static char pseoclip[] =
 "eoclip\n";
 
 static char psrectclip[] =
+"%d %d %d %d rectclip\n"; 
+
+static char psrectclip2[] =
 "%s rectclip\n"; 
 
 static char pshatch[] =
@@ -702,6 +708,11 @@ BOOL PSDRV_WriteEOClip(DC *dc)
     return PSDRV_WriteSpool(dc, pseoclip, sizeof(pseoclip)-1);
 }
 
+BOOL PSDRV_WriteInitClip(DC *dc)
+{
+    return PSDRV_WriteSpool(dc, psinitclip, sizeof(psinitclip)-1);
+}
+
 BOOL PSDRV_WriteHatch(DC *dc)
 {
     return PSDRV_WriteSpool(dc, pshatch, sizeof(pshatch)-1);
@@ -911,14 +922,21 @@ BOOL PSDRV_WriteArrayDef(DC *dc, CHAR *pszArrayName, INT nSize)
     return PSDRV_WriteSpool(dc, buf, strlen(buf));
 }
 
-BOOL PSDRV_WriteRectClip(DC *dc, CHAR *pszArrayName)
+BOOL PSDRV_WriteRectClip(DC *dc, INT x, INT y, INT w, INT h)
 {
     char buf[100];
 
-    sprintf(buf, psrectclip, pszArrayName);
+    sprintf(buf, psrectclip, x, y, w, h);
     return PSDRV_WriteSpool(dc, buf, strlen(buf));
 }
 
+BOOL PSDRV_WriteRectClip2(DC *dc, CHAR *pszArrayName)
+{
+    char buf[100];
+
+    sprintf(buf, psrectclip2, pszArrayName);
+    return PSDRV_WriteSpool(dc, buf, strlen(buf));
+}
 
 BOOL PSDRV_WritePatternDict(DC *dc, BITMAP *bm, BYTE *bits)
 {
diff --git a/include/psdrv.h b/include/psdrv.h
index a68a45240e6..dda676c35ae 100644
--- a/include/psdrv.h
+++ b/include/psdrv.h
@@ -289,8 +289,10 @@ extern BOOL PSDRV_WriteGSave(DC *dc);
 extern BOOL PSDRV_WriteGRestore(DC *dc);
 extern BOOL PSDRV_WriteNewPath(DC *dc);
 extern BOOL PSDRV_WriteClosePath(DC *dc);
+extern BOOL PSDRV_WriteInitClip(DC *dc);
 extern BOOL PSDRV_WriteClip(DC *dc);
-extern BOOL PSDRV_WriteRectClip(DC *dc, CHAR *pszArrayName);
+extern BOOL PSDRV_WriteRectClip(DC *dc, INT x, INT y, INT w, INT h);
+extern BOOL PSDRV_WriteRectClip2(DC *dc, CHAR *pszArrayName);
 extern BOOL PSDRV_WriteEOClip(DC *dc);
 extern BOOL PSDRV_WriteHatch(DC *dc);
 extern BOOL PSDRV_WriteRotate(DC *dc, float ang);