Added 256 color support. Now colors can be redifined to different RGB values.

4 files changed, 39 insertions, 1 deletions

diff --git a/src/cmds_command.c b/src/cmds_command.c
index 63ad14a..5d2a1ca 100644
--- a/src/cmds_command.c
+++ b/src/cmds_command.c
@@ -84,6 +84,7 @@ static char * valid_commands[] = {
 "q!",
 "quit!",
 "quit",
+"redefine_color"
 "refresh",
 "set",
 "showcol",
@@ -298,6 +299,9 @@ void do_commandmode(struct block * sb) {
             }
             send_to_interp(cline); 
 
+        } else if ( ! strncmp(inputline, "redefine_color", 14) ) {
+            send_to_interp(inputline); 
+
         } else if ( ! strncmp(inputline, "load", 4) ) {
             char cline [BUFFERSIZE];
             int force_rewrite = 0;
diff --git a/src/color.c b/src/color.c
index 93d64ca..9fc4ceb 100644
--- a/src/color.c
+++ b/src/color.c
@@ -323,7 +323,7 @@ void color_cell(int r, int c, int rf, int cf, char * str) {
 // returns 0 otherwise
 int same_ucolor(struct ucolor * u, struct ucolor * v) {
     if (u == NULL || v == NULL)       return 0;
-          
+
     if (u->fg != v->fg)               return 0;
     if (u->bg != v->bg)               return 0;
     if (u->bold != v->bold)           return 0;
@@ -336,3 +336,26 @@ int same_ucolor(struct ucolor * u, struct ucolor * v) {
     return 1;
 }
 
+int redefine_color(char * color, int r, int g, int b) {
+    void winchg();
+
+#ifdef USECOLORS
+    if (
+        ! atoi(get_conf_value("nocurses")) &&
+        has_colors() &&
+        can_change_color()
+       ) {
+           int c = atoi(get(d_colors_param, color));
+           int res = init_color(c, r, g, b);
+           if (res == 0) {
+               winchg(); 
+               scinfo("Color %s redefined to %d %d %d.", color, r, g, b);
+               return 0;
+           }
+       }
+
+#endif
+       scinfo("Could not redefine color");
+       return -1;
+}
+
diff --git a/src/doc b/src/doc
index 502563c..f1609ba 100644
--- a/src/doc
+++ b/src/doc
@@ -546,6 +546,12 @@ Commands for handling cell content:
                 Ex.:       :cellcolor "bg=CYAN fg=WHITE"
                            :cellcolor "fg=RED bold=1 underline=1"
 
+    :redefine_color <str> <number> <number> <number>
+                This command is used for changing RGB values of the colors defined by ncurses.
+                For this, ncurses shall be built with --enable-ext-colors and your terminal shall support 256 colors.
+                One for example is TERM=xterm-256color
+                Example of use:              :redefine_color "RED" 700 100 100
+                
     :lock       Use this command to lock the current cell or a range of cells, i.e. make them immune to any type of editing. A locked cell can't be changed in any way until it is unlocked.
 
     :unlock     This command is the opposite of the :lock command and thus unlocks a locked cell and makes it editable.
diff --git a/src/gram.y b/src/gram.y
index b68d50a..35d9521 100644
--- a/src/gram.y
+++ b/src/gram.y
@@ -187,6 +187,7 @@ token S_YANKCOL
 %token S_IUNMAP
 %token S_COLOR
 %token S_CELLCOLOR
+%token S_REDEFINE_COLOR
 
 %token K_ERROR
 %token K_INVALID
@@ -482,6 +483,10 @@ command:
                                           scxfree($3);
                                         }
 
+    |    S_REDEFINE_COLOR STRING NUMBER NUMBER NUMBER {
+                                         redefine_color($2, $3, $4, $5);
+                                         scxfree($2); }
+
     |    S_PAD NUMBER COL ':' COL    { pad($2, 0, $3, maxrow, $5); }
     |    S_PAD NUMBER COL            { pad($2, 0, $3, maxrow, $3); }
     |    S_PAD NUMBER var_or_range   { pad($2, $3.left.vp->row, $3.left.vp->col, $3.right.vp->row, $3.right.vp->col); }