fix toggle trapezium type

2 files changed, 61 insertions, 13 deletions

diff --git a/draw.c b/draw.c
index 51a27b2..30d0945 100644
--- a/draw.c
+++ b/draw.c
@@ -226,7 +226,7 @@ void draw_trapezium(int x1, int y1, char st, char fix){
 		f = draw_xy;
 
 	/* This is valid only for "upper" trapezoids */
-	if ((st & BOX_TRAP_U) == BOX_TRAP_U){
+	if (STYLE_IS(st, BOX_TRAP_U)){
 #ifdef DEBUG
 		fprintf(stderr, "This is an 'upward' trapezium\n");
 #endif
@@ -237,7 +237,7 @@ void draw_trapezium(int x1, int y1, char st, char fix){
 		left_c = '/';
 		right_c = '\\';
 	}
-	else if ((st & BOX_TRAP_D) == BOX_TRAP_D){
+	else if (STYLE_IS(st, BOX_TRAP_D)){
 #ifdef DEBUG
 		fprintf(stderr, "This is a 'downward' trapezium\n");
 #endif
@@ -248,25 +248,69 @@ void draw_trapezium(int x1, int y1, char st, char fix){
 		right_c = '/';
 		left_c = '\\';
 	}
+	/* Long side */
 	for(i=xmin+1; i<=xmax; i++){
 		f(i, ylong, line_h);
 	}
-	if (st & 0x02){ /* Centred trapezium */
-		for(i=xmin+xoff; i<=xmax-xoff; i++){
+	/* short side */
+	for(i=xmin+xoff; i<=xmax-xoff; i++){
+		f(i, yshort, line_h);
+	}
+	
+	if (STYLE_IS(st, BOX_TRAP_L)){
+		left_c = '/';
+		right_c = line_v;
+		for(i=xmax-xoff;i<xmax; i++){
 			f(i, yshort, line_h);
 		}
+		xoff = dy;
+		if (STYLE_IS(st, BOX_TRAP_D)){
+			xoff = 0;
+			left_c = '\\';
+		}
+		for(i=ymin; i<ymax; i++, xoff += xincr){
+			f(xmin+xoff, i, left_c);
+			f(xmax, i, right_c);
+		}
+		xoff = dy;
+		f(xmin+xoff, yshort, corner);
+		f(xmax, yshort, corner);
 	}
-	f(xmin+xoff, yshort, corner);
+	else if (STYLE_IS(st, BOX_TRAP_R)){
+		right_c = '\\';
+		left_c = line_v;
+		for(i=xmin; i<xmin+xoff; i++){
+			f(i, yshort, line_h);
+		}
+		xoff = dy-1;
+		if (STYLE_IS(st, BOX_TRAP_D)){
+			xoff = 1;
+			right_c = '/';
+		}
+		for(i=ymin+1; i<ymax; i++, xoff += xincr){
+			f(xmin, i, left_c);
+			f(xmax-xoff, i, right_c);
+		}
+		xoff = dy;
+		f(xmin, yshort, corner);
+		f(xmax-xoff, yshort, corner);
+	}
+	else if (STYLE_IS(st, BOX_TRAP_C)){
+		xoff = dy - 1;
+		if (STYLE_IS(st, BOX_TRAP_D))
+			xoff = 1;
+		for(i=ymin+1; i<ymax; i++, xoff += xincr){
+			f(xmin + xoff, i, left_c);
+			f(xmax - xoff, i, right_c);
+		}
+		xoff = dy;
+		f(xmin+xoff, yshort, corner);
+		f(xmax-xoff, yshort, corner);
+	}
+	
+
 	f(xmin, ylong, corner);
-	f(xmax-xoff, yshort, corner);
 	f(xmax, ylong, corner);
-	xoff --;
-	if ((st & BOX_TRAP_DC) == BOX_TRAP_DC)
-		xoff = 1;
-	for(i=ymin+1; i<ymax; i++, xoff += xincr){
-		f(xmin + xoff, i, left_c);
-		f(xmax - xoff, i, right_c);
-	}	
 
 	
 	if (fix == FIX)
diff --git a/gramscii.h b/gramscii.h
index 9c8959a..e6c5b77 100644
--- a/gramscii.h
+++ b/gramscii.h
@@ -47,12 +47,16 @@
 #define BOX_TRAP    0x20
 #define BOX_TRAP_U  0x24
 #define BOX_TRAP_D  0x28
+#define BOX_TRAP_R  0x21
+#define BOX_TRAP_C  0x22
+#define BOX_TRAP_L  0x23
 #define BOX_TRAP_UR 0x25
 #define BOX_TRAP_UC 0x26
 #define BOX_TRAP_UL 0x27
 #define BOX_TRAP_DL 0x29
 #define BOX_TRAP_DC 0x2a
 #define BOX_TRAP_DR 0x2b
+#define STYLE_IS(x, y) (((x) & (y) ) == y)
 /**/
 
 #define NOFIX 0x0