Fix and update alignment #346 (#701)

* interactive layout alignment rewritten
* interface for new alignment rules
* new alignment dialog box
* user defined layout rules added
* layout rules can be stored in projects, settings, and external files
* Valgrind verification

1 files changed, 40 insertions, 0 deletions

diff --git a/src/fl_symbols.cxx b/src/fl_symbols.cxx
index e6ebb4199..2cb586ccb 100644
--- a/src/fl_symbols.cxx
+++ b/src/fl_symbols.cxx
@@ -655,6 +655,43 @@ static void draw_redo(Fl_Color c) {
   fl_scale(-1.0, 1.0);
 }
 
+static void draw_open_box(Fl_Color col) {
+  fl_color(col);
+  BCP;
+  vv(-1.0, -1.0); vv(-0.4, -1.0); vv(-0.4, -0.75); vv(-0.75, -0.75);
+  vv(-0.75, 0.75); vv(0.75, 0.75); vv(0.75, 0.4); vv(1.0, 0.4); vv(1.0, 1.0);
+  vv(-1.0, 1.0);
+  ECP;
+  set_outline_color(col);
+  BC;
+  vv(-1.0, -1.0); vv(-0.4, -1.0); vv(-0.4, -0.75); vv(-0.75, -0.75);
+  vv(-0.75, 0.75); vv(0.75, 0.75); vv(0.75, 0.4); vv(1.0, 0.4); vv(1.0, 1.0);
+  vv(-1.0, 1.0);
+  EC;
+}
+
+static void draw_import(Fl_Color col)
+{
+  fl_push_matrix();
+  fl_scale(-1.0, 1.0);
+  draw_open_box(col);
+  fl_scale(-1.0, 1.0);
+  fl_translate(-0.8, -0.3);
+  fl_rotate(45.0+90);
+  draw_round_arrow(col, 3);
+  fl_pop_matrix();
+}
+
+static void draw_export(Fl_Color col)
+{
+  draw_open_box(col);
+  fl_push_matrix();
+  fl_translate(0.7, 0.1);
+  fl_rotate(225.0);
+  draw_round_arrow(col, 3);
+  fl_pop_matrix();
+}
+
 static void fl_init_symbols(void) {
   static char beenhere;
   if (beenhere) return;
@@ -702,5 +739,8 @@ static void fl_init_symbols(void) {
   fl_add_symbol("undo",         draw_undo,              1);
   fl_add_symbol("redo",         draw_redo,              1);
 
+  fl_add_symbol("import",       draw_import,            1);
+  fl_add_symbol("export",       draw_export,            1);
+
 //  fl_add_symbol("file",      draw_file,           1);
 }