Implement osx_draw_thick_line

diff --git a/osx.m b/osx.m
index c46e8bcc9023ded501e158720d975c8cd250287e..13abc4ee5590e136eb720d675ba5b481b6d47f84 100644 (file)
--- a/osx.m
+++ b/osx.m
@@ -1352,6 +1352,26 @@ static void osx_draw_line(void *handle, int x1, int y1, int x2, int y2, int colo
     NSRectFill(NSMakeRect(x1, fe->h-y1-1, 1, 1));
     NSRectFill(NSMakeRect(x2, fe->h-y2-1, 1, 1));
 }
+
+static void osx_draw_thick_line(
+    void *handle, float thickness,
+    float x1, float y1,
+    float x2, float y2,
+    int colour)
+{
+    frontend *fe = (frontend *)handle;
+    NSBezierPath *path = [NSBezierPath bezierPath];
+
+    assert(colour >= 0 && colour < fe->ncolours);
+    [fe->colours[colour] set];
+    [[NSGraphicsContext currentContext] setShouldAntialias: YES];
+    [path setLineWidth: thickness];
+    [path setLineCapStyle: NSButtLineCapStyle];
+    [path moveToPoint: NSMakePoint(x1, fe->h-y1)];
+    [path lineToPoint: NSMakePoint(x2, fe->h-y2)];
+    [path stroke];
+}
+
 static void osx_draw_rect(void *handle, int x, int y, int w, int h, int colour)
 {
     frontend *fe = (frontend *)handle;
@@ -1541,6 +1561,7 @@ const struct drawing_api osx_drawing = {
     NULL, NULL, NULL, NULL, NULL, NULL, /* {begin,end}_{doc,page,puzzle} */
     NULL, NULL,                               /* line_width, line_dotted */
     osx_text_fallback,
+    osx_draw_thick_line,
 };
 
 void deactivate_timer(frontend *fe)