diff -r 6492ac9c2494 -r be774c8a672f DeviceGraphicsContext.st
--- a/DeviceGraphicsContext.st	Tue Jun 04 17:57:01 1996 +0200
+++ b/DeviceGraphicsContext.st	Tue Jun 04 18:01:04 1996 +0200
@@ -904,7 +904,7 @@
 displayArcX:x y:y width:w height:h from:startAngle angle:angle
     "draw an arc; apply transformation if nonNil"
 
-    |pX pY nW nH|
+    |pX pY rpX rpY nW nH|
 
     gcId isNil ifTrue:[
         self initGC
@@ -944,7 +944,23 @@
                    in:drawableId 
                  with:gcId
 
+"/    rpX := pX rounded.
+"/    rpY := pY rounded.
+"/    nW := (nW + (rpX - pX)) rounded.
+"/    nH := (nH + (rpY - pY)) rounded.
+"/
+"/    device
+"/          displayArcX:rpX 
+"/                    y:rpY 
+"/                width:nW 
+"/               height:nH 
+"/                 from:startAngle 
+"/                angle:angle
+"/                   in:drawableId 
+"/                 with:gcId
+
     "Created: 8.5.1996 / 08:31:30 / cg"
+    "Modified: 4.6.1996 / 17:59:28 / cg"
 !
 
 displayForm:formToDraw x:x y:y
@@ -1451,7 +1467,7 @@
     "draw a rectangle (with current paint-color).
      If transformation is nonNil, drawing is in logical coordinates."
 
-    |pX pY nW nH easy fgId bgId|
+    |pX pY rpX rpY nW nH easy fgId bgId|
 
     gcId isNil ifTrue:[
         self initGC
@@ -1520,11 +1536,29 @@
      a rectangle using the same extents.
      I'm not certain if is the right thing to do ...
     "
-    device displayRectangleX:pX y:pY 
-                       width:(nW - 1) height:(nH - 1)
-                           in:drawableId with:gcId
-
-    "Modified: 13.4.1996 / 20:31:59 / cg"
+    device displayRectangleX:pX 
+                           y:pY 
+                       width:(nW - 1) 
+                      height:(nH - 1)
+                          in:drawableId with:gcId
+
+"/    rpX := pX rounded.
+"/    rpY := pY rounded.
+"/    nW := (nW + (rpX - pX)) rounded.
+"/    nH := (nH + (rpY - pY)) rounded.
+"/
+"/    "I asked myself many times if we should draw w/h or (w-1)/(h-1) bits -
+"/     this one seems mathematically incorrect but allows to draw and fill
+"/     a rectangle using the same extents.
+"/     I'm not certain if is the right thing to do ...
+"/    "
+"/    device displayRectangleX:rpX 
+"/                           y:rpY 
+"/                       width:(nW - 1) 
+"/                      height:(nH - 1)
+"/                          in:drawableId with:gcId
+
+    "Modified: 4.6.1996 / 18:00:03 / cg"
 !
 
 displayString:aString from:index1 to:index2 x:x y:y
@@ -2782,7 +2816,7 @@
 fillArcX:x y:y width:w height:h from:startAngle angle:angle
     "draw a filled arc; apply transformation if nonNil"
 
-    |pX pY nW nH|
+    |pX pY rpX rpY nW nH|
 
     gcId isNil ifTrue:[
         self initGC
@@ -2822,8 +2856,23 @@
                 in:drawableId
               with:gcId
 
+"/    rpX := pX rounded.
+"/    rpY := pY rounded.
+"/    nW := (nW + (rpX - pX)) rounded.
+"/    nH := (nH + (rpY - pY)) rounded.
+"/
+"/    device
+"/          fillArcX:rpX 
+"/                 y:rpY 
+"/             width:nW
+"/            height:nH 
+"/              from:startAngle
+"/             angle:angle
+"/                in:drawableId
+"/              with:gcId
+
     "Created: 8.5.1996 / 08:29:45 / cg"
-    "Modified: 8.5.1996 / 08:38:10 / cg"
+    "Modified: 4.6.1996 / 17:58:21 / cg"
 !
 
 fillPolygon:aPolygon
@@ -2855,29 +2904,29 @@
 fillRectangleX:x y:y width:w height:h
     "draw a filled rectangle; apply transformation if nonNil"
 
-    |pX pY nW nH|
+    |pX pY rpX rpY nW nH|
 
     gcId isNil ifTrue:[
-	self initGC
+        self initGC
     ].
     transformation notNil ifTrue:[
-	pX := transformation applyToX:x.
-	pY := transformation applyToY:y.
-	nW := transformation applyScaleX:w.
-	nH := transformation applyScaleY:h.
-	nW < 0 ifTrue:[
-	      nW := nW abs.  
-	      pX := pX - nW.
-	].
-	nH < 0 ifTrue:[
-	      nH := nH abs.  
-	      pY := pY - nH.
-	].
+        pX := transformation applyToX:x.
+        pY := transformation applyToY:y.
+        nW := transformation applyScaleX:w.
+        nH := transformation applyScaleY:h.
+        nW < 0 ifTrue:[
+              nW := nW abs.  
+              pX := pX - nW.
+        ].
+        nH < 0 ifTrue:[
+              nH := nH abs.  
+              pY := pY - nH.
+        ].
     ] ifFalse:[
-	pX := x.
-	pY := y.
-	nW := w.
-	nH := h.
+        pX := x.
+        pY := y.
+        nW := w.
+        nH := h.
     ].
     pX := pX rounded.
     pY := pY rounded.
@@ -2885,11 +2934,25 @@
     nH := nH rounded.
 
     device
-	fillRectangleX:pX 
-		     y:pY 
-		 width:nW 
-		height:nH 
-		    in:drawableId with:gcId
+        fillRectangleX:pX 
+                     y:pY 
+                 width:nW 
+                height:nH 
+                    in:drawableId with:gcId
+
+"/    rpX := pX rounded.
+"/    rpY := pY rounded.
+"/    nW := (nW + (pX - rpX)) rounded.
+"/    nH := (nH + (pY - rpY)) rounded.
+"/
+"/    device
+"/        fillRectangleX:rpX 
+"/                     y:rpY 
+"/                 width:nW 
+"/                height:nH 
+"/                    in:drawableId with:gcId
+
+    "Modified: 4.6.1996 / 17:58:49 / cg"
 ! !
 
 !DeviceGraphicsContext methodsFor:'initialization'!
@@ -3162,6 +3225,14 @@
     ^ device horizontalPixelPerMillimeter * millis
 !
 
+resolution
+    "return a point consisting of pixel-per-inch horizontally and vertically."
+
+    ^ device resolution
+
+    "Created: 4.6.1996 / 15:23:55 / cg"
+!
+
 verticalIntegerPixelPerMillimeter
     "return the (rounded) number of pixels per millimeter"
 
@@ -3189,6 +3260,6 @@
 !DeviceGraphicsContext class methodsFor:'documentation'!
 
 version
-    ^ '$Header: /cvs/stx/stx/libview/DeviceGraphicsContext.st,v 1.4 1996-05-30 07:22:34 cg Exp $'
+    ^ '$Header: /cvs/stx/stx/libview/DeviceGraphicsContext.st,v 1.5 1996-06-04 16:01:04 cg Exp $'
 ! !
 DeviceGraphicsContext initialize!