toolbar: Send a signal when shrink mode is changed.

Summary:
It is useful for changing item's state according to shrink mode.
@feature

Test Plan:
It includes a use case for the patch in toolbar default theme.
Run "elementary_test -to toolbar2".

Reviewers: jaehwan, woohyun, cedric, raster

Subscribers: eagleeye

Differential Revision: https://phab.enlightenment.org/D3481

1 files changed, 84 insertions, 6 deletions

diff --git a/data/themes/edc/elm/toolbar.edc b/data/themes/edc/elm/toolbar.edc
index d932ff24b..f6cb53364 100644
--- a/data/themes/edc/elm/toolbar.edc
+++ b/data/themes/edc/elm/toolbar.edc
@@ -379,6 +379,8 @@ group { name: "elm/toolbar/item/default";
 #define DISABLE  4
    script {   
       public btmode;
+      public vertical = 0;
+      public scroll = 0;
       public eval_mode(m) {
          new m1 = m & MASK;
          new d = m & DISABLE;
@@ -432,6 +434,44 @@ group { name: "elm/toolbar/item/default";
             }
          }
       }
+
+      public enable_scroll() {
+         set_int(scroll, 1);
+
+         if (get_int(vertical))
+            set_state(PART:"base", "vert_scroll", 0.0);
+         else
+            set_state(PART:"base", "scroll", 0.0);
+      }
+
+      public disable_scroll() {
+         set_int(scroll, 0);
+
+         if (get_int(vertical))
+            set_state(PART:"base", "vert", 0.0);
+         else
+            set_state(PART:"base", "default", 0.0);
+      }
+
+      public enable_vertical() {
+         set_int(vertical, 1);
+
+         if (get_int(scroll))
+            set_state(PART:"base", "vert_scroll", 0.0);
+         else
+            set_state(PART:"base", "vert", 0.0);
+         set_state(PART:"bend_clip", "vert", 0.0);
+      }
+
+      public disable_vertical() {
+         set_int(vertical, 0);
+
+         if (get_int(scroll))
+            set_state(PART:"base", "scroll", 0.0);
+         else
+            set_state(PART:"base", "default", 0.0);
+         set_state(PART:"bend_clip", "default", 0.0);
+      }
    }
    parts {
       part { name: "base"; type: SPACER;
@@ -441,6 +481,14 @@ group { name: "elm/toolbar/item/default";
             rel1.offset: -1 0;
             rel2.offset: 0 -1;
          }
+         description { state: "scroll" 0.0;
+            inherit: "default" 0.0;
+            min: 80 0;
+         }
+         description { state: "vert_scroll" 0.0;
+            inherit: "vert" 0.0;
+            min: 0 80;
+         }
       }
       part { name: "shadow1"; mouse_events: 0;
          description { state: "default" 0.0;
@@ -810,15 +858,45 @@ group { name: "elm/toolbar/item/default";
    programs {
       program {
          signal: "elm,orient,horizontal"; source: "elm";
-         action: STATE_SET "default" 0.0;
-         target: "base";
-         target: "bend_clip";
+         script {
+            disable_vertical();
+         }
       }
       program {
          signal: "elm,orient,vertical"; source: "elm";
-         action: STATE_SET "vert" 0.0;
-         target: "base";
-         target: "bend_clip";
+         script {
+            enable_vertical();
+         }
+      }
+      program {
+         signal: "elm,state,shrink,scroll"; source: "elm";
+         script {
+            enable_scroll();
+         }
+      }
+      program {
+         signal: "elm,state,shrink,none"; source: "elm";
+         script {
+            disable_scroll()
+         }
+      }
+      program {
+         signal: "elm,state,shrink,hide"; source: "elm";
+         script {
+            disable_scroll()
+         }
+      }
+      program {
+         signal: "elm,state,shrink,menu"; source: "elm";
+         script {
+            disable_scroll()
+         }
+      }
+      program {
+         signal: "elm,state,shrink,expand"; source: "elm";
+         script {
+            disable_scroll()
+         }
       }
       
       program { name: "st0";