show element type in legend

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1907 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/NEWS b/NEWS
index d5a4ad2..d13a76a 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -67,5 +67,7 @@ Miscellaneous Changes
 * new graph option --border to set the 3d border width 
   by Bernhard Reutner-Fischer
 
+* draw different color swats depending on the type of line drawn in the
+  graph by Loïc Tortay
 
 for more detail see the CHANGES file.

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index ff1859d..2df1835 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -2737,41 +2737,62 @@ void grid_paint(
                 boxV = boxH;
                 /* shift the box up a bit */
                 Y0 -= boxV * 0.4;
-                /* make sure transparent colors show up the same way as in the graph */
-                gfx_new_area(im,
-                             X0, Y0 - boxV,
-                             X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
-                gfx_add_point(im, X0 + boxH, Y0 - boxV);
-                gfx_close_path(im);
-                gfx_new_area(im, X0, Y0 - boxV, X0,
-                             Y0, X0 + boxH, Y0, im->gdes[i].col);
-                gfx_add_point(im, X0 + boxH, Y0 - boxV);
-                gfx_close_path(im);
-                cairo_save(im->cr);
-                cairo_new_path(im->cr);
-                cairo_set_line_width(im->cr, 1.0);
-                X1 = X0 + boxH;
-                Y1 = Y0 - boxV;
-                gfx_line_fit(im, &X0, &Y0);
-                gfx_line_fit(im, &X1, &Y1);
-                cairo_move_to(im->cr, X0, Y0);
-                cairo_line_to(im->cr, X1, Y0);
-                cairo_line_to(im->cr, X1, Y1);
-                cairo_line_to(im->cr, X0, Y1);
-                cairo_close_path(im->cr);
-                cairo_set_source_rgba(im->cr,
-                                      im->
-                                      graph_col
-                                      [GRC_FRAME].
-                                      red,
-                                      im->
-                                      graph_col
-                                      [GRC_FRAME].
-                                      green,
-                                      im->
-                                      graph_col
-                                      [GRC_FRAME].
-                                      blue, im->graph_col[GRC_FRAME].alpha);
+               if (im->gdes[i].gf == GF_HRULE) { /* [-] */ 
+                       cairo_save(im->cr);
+                       cairo_new_path(im->cr);
+                       cairo_set_line_width(im->cr, 1.0);
+                       gfx_line(im,
+                               X0, Y0 - boxV / 2,
+                               X0 + boxH, Y0 - boxV / 2,
+                               1.0, im->gdes[i].col);
+                       gfx_close_path(im);
+               } else if (im->gdes[i].gf == GF_VRULE) { /* [|] */
+                       cairo_save(im->cr);
+                       cairo_new_path(im->cr);
+                       cairo_set_line_width(im->cr, 1.0);
+                       gfx_line(im,
+                               X0 + boxH / 2, Y0,
+                               X0 + boxH / 2, Y0 - boxV,
+                               1.0, im->gdes[i].col);
+                       gfx_close_path(im);
+               } else if (im->gdes[i].gf == GF_LINE) { /* [/] */
+                       cairo_save(im->cr);
+                       cairo_new_path(im->cr);
+                       cairo_set_line_width(im->cr, im->gdes[i].linewidth);
+                       gfx_line(im,
+                               X0, Y0,
+                               X0 + boxH, Y0 - boxV,
+                               im->gdes[i].linewidth, im->gdes[i].col);
+                       gfx_close_path(im);
+               } else {
+               /* make sure transparent colors show up the same way as in the graph */
+                       gfx_new_area(im,
+                                    X0, Y0 - boxV,
+                                    X0, Y0, X0 + boxH, Y0, im->graph_col[GRC_BACK]);
+                       gfx_add_point(im, X0 + boxH, Y0 - boxV);
+                       gfx_close_path(im);
+                       gfx_new_area(im, X0, Y0 - boxV, X0,
+                                    Y0, X0 + boxH, Y0, im->gdes[i].col);
+                       gfx_add_point(im, X0 + boxH, Y0 - boxV);
+                       gfx_close_path(im);
+                       cairo_save(im->cr);
+                       cairo_new_path(im->cr);
+                       cairo_set_line_width(im->cr, 1.0);
+                       X1 = X0 + boxH;
+                       Y1 = Y0 - boxV;
+                       gfx_line_fit(im, &X0, &Y0);
+                       gfx_line_fit(im, &X1, &Y1);
+                       cairo_move_to(im->cr, X0, Y0);
+                       cairo_line_to(im->cr, X1, Y0);
+                       cairo_line_to(im->cr, X1, Y1);
+                       cairo_line_to(im->cr, X0, Y1);
+                       cairo_close_path(im->cr);
+                       cairo_set_source_rgba(im->cr,
+                                             im->graph_col[GRC_FRAME].red,
+                                             im->graph_col[GRC_FRAME].green,
+                                             im->graph_col[GRC_FRAME].blue,
+                                             im->graph_col[GRC_FRAME].alpha);
+               }
                 if (im->gdes[i].dash) {
                     /* make box borders in legend dashed if the graph is dashed */
                     double    dashes[] = {