commit 103f7a5ea6d431e28becd02aa7e50ba5941010ff
Author: Pavel Sanda <sa...@lyx.org>
Date:   Mon Mar 12 13:40:52 2018 +0100

    Paint \dot & \ddot more like a dot
    
    https://www.mail-archive.com/lyx-devel@lists.lyx.org/msg204183.html
---
 src/mathed/MathSupport.cpp |   34 ++++++++++++++++++++++++----------
 1 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/src/mathed/MathSupport.cpp b/src/mathed/MathSupport.cpp
index 57eca6e..dfe2438 100644
--- a/src/mathed/MathSupport.cpp
+++ b/src/mathed/MathSupport.cpp
@@ -82,6 +82,7 @@ namespace {
 /*
  * Internal struct of a drawing: code n x1 y1 ... xn yn, where code is:
  * 0 = end, 1 = line, 2 = polyline, 3 = square line, 4 = square polyline
+ * 5 = rounded thick line (i.e. dot for short line)
  */
 
 
@@ -293,9 +294,18 @@ double const hline[] = {
 };
 
 
+double const dot[] = {
+//     1, 0.5, 0.2, 0.5, 0.2,
+//     1, 0.4, 0.4, 0.6, 0.4,
+//     1, 0.5, 0.5, 0.5, 0.5,
+       5, 0.4, 0.4, 0.6, 0.4,
+       0
+};
+
+
 double const ddot[] = {
-       1, 0.2, 0.5, 0.3, 0.5,
-       1, 0.7, 0.5, 0.8, 0.5,
+       5, 0.0, 0.4, 0.3, 0.4,
+       5, 0.6, 0.4, 1.0, 0.4,
        0
 };
 
@@ -333,12 +343,6 @@ double const dline3[] = {
 };
 
 
-double const hlinesmall[] = {
-       1, 0.4, 0.5, 0.6, 0.5,
-       0
-};
-
-
 double const ring[] = {
        2, 5,
        0.5, 0.8,  0.8, 0.5,  0.5, 0.2,  0.2, 0.5,  0.5, 0.8,
@@ -457,7 +461,7 @@ named_deco_struct deco_table[] = {
        {"acute",          slash,      0 },
        {"tilde",          tilde,      0 },
        {"bar",            hline,      0 },
-       {"dot",            hlinesmall, 0 },
+       {"dot",            dot,        0 },
        {"check",          angle,      1 },
        {"breve",          parenth,    1 },
        {"vec",            arrow,      3 },
@@ -623,7 +627,7 @@ void mathed_draw_deco(PainterInfo & pi, int x, int y, int 
w, int h,
 
        for (int i = 0; d[i]; ) {
                int code = int(d[i++]);
-               if (code & 1) {  // code == 1 || code == 3
+               if (code & 1) {  // code == 1 || code == 3 || code == 5
                        double xx = d[i++];
                        double yy = d[i++];
                        double x2 = d[i++];
@@ -637,6 +641,16 @@ void mathed_draw_deco(PainterInfo & pi, int x, int y, int 
w, int h,
                                int(x + xx + 0.5), int(y + yy + 0.5),
                                int(x + x2 + 0.5), int(y + y2 + 0.5),
                                pi.base.font.color());
+                       if (code == 5) {  // thicker, but rounded
+                               pi.pain.line(
+                                       int(x + xx + 0.5+1), int(y + yy + 
0.5-1),
+                                       int(x + x2 + 0.5-1), int(y + y2 + 
0.5-1),
+                               pi.base.font.color());
+                               pi.pain.line(
+                                       int(x + xx + 0.5+1), int(y + yy + 
0.5+1),
+                                       int(x + x2 + 0.5-1), int(y + y2 + 
0.5+1),
+                               pi.base.font.color());
+                       }
                } else {
                        int xp[32];
                        int yp[32];

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