Elementary/Panes: update functionality (add new 8 API functions)

Summary: Added possibility to set the minimum size of the left and right sides.

Reviewers: raster, cedric, seoz, Hermet

Differential Revision: https://phab.enlightenment.org/D998

6 files changed, 386 insertions, 6 deletions

diff --git a/data/themes/edc/elm/panes.edc b/data/themes/edc/elm/panes.edc
index 63f1166a8..84aa3b4ec 100644
--- a/data/themes/edc/elm/panes.edc
+++ b/data/themes/edc/elm/panes.edc
@@ -9,6 +9,32 @@ group { name: "elm/panes/vertical/default";
          description { state: "default" 0.0;
          }
       }
+      part { name: "right_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 1 1 1;
+            y: 0 0 0;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "left_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 1 1 1;
+            y: 0 0 0;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "sub_whole"; type: SPACER;
+         description { state: "default" 0.0;
+            rel1.relative: 1.0 0.0;
+            rel1.to_x: "left_constraint";
+            rel2.relative: 0.0 1.0;
+            rel2.to_x: "right_constraint";
+         }
+      }
       part { name: "whole_left"; type: RECT;
          description { state: "default" 0.0;
             rel2.to_x: "elm.bar";
@@ -40,7 +66,7 @@ group { name: "elm/panes/vertical/default";
          }
       }
       part { name: "elm.bar"; type: SPACER;
-         dragable { confine: "whole";
+         dragable { confine: "sub_whole";
             x: 1 1 1;
             y: 0 0 0;
          }
@@ -104,6 +130,32 @@ group { name: "elm/panes/horizontal/default";
          description { state: "default" 0.0;
          }
       }
+      part { name: "right_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 0 0 0;
+            y: 1 1 1;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "left_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 0 0 0;
+            y: 1 1 1;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "sub_whole"; type: SPACER;
+         description { state: "default" 0.0;
+            rel1.relative: 0.0 1.0;
+            rel1.to_y: "left_constraint";
+            rel2.relative: 1.0 0.0;
+            rel2.to_y: "right_constraint";
+         }
+      }
       part { name: "whole_left"; type: RECT;
          description { state: "default" 0.0;
             rel2.to_y: "elm.bar";
@@ -135,7 +187,7 @@ group { name: "elm/panes/horizontal/default";
          }
       }
       part { name: "elm.bar"; type: SPACER;
-         dragable { confine: "whole";
+         dragable { confine: "sub_whole";
             x: 0 0 0;
             y: 1 1 1;
          }
@@ -194,6 +246,7 @@ group { name: "elm/panes/horizontal/default";
 
 ////////////////////////////////////////////////////////////////////////////
 
+
 group { name: "elm/panes/vertical/flush";
    images.image: "downlight_glow_left.png" COMP;
    images.image: "downlight_glow_right.png" COMP;
@@ -202,6 +255,32 @@ group { name: "elm/panes/vertical/flush";
          description { state: "default" 0.0;
          }
       }
+      part { name: "right_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 1 1 1;
+            y: 0 0 0;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "left_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 1 1 1;
+            y: 0 0 0;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "sub_whole"; type: SPACER;
+         description { state: "default" 0.0;
+            rel1.relative: 1.0 0.0;
+            rel1.to_x: "left_constraint";
+            rel2.relative: 0.0 1.0;
+            rel2.to_x: "right_constraint";
+         }
+      }
       part { name: "whole_left"; type: RECT;
          description { state: "default" 0.0;
             rel2.to_x: "elm.bar";
@@ -229,7 +308,7 @@ group { name: "elm/panes/vertical/flush";
          }
       }
       part { name: "elm.bar"; type: SPACER;
-         dragable { confine: "whole";
+         dragable { confine: "sub_whole";
             x: 1 1 1;
             y: 0 0 0;
          }
@@ -388,6 +467,32 @@ group { name: "elm/panes/horizontal/flush";
          description { state: "default" 0.0;
          }
       }
+      part { name: "right_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 0 0 0;
+            y: 1 1 1;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "left_constraint"; type: SPACER;
+         dragable { confine: "whole";
+            x: 0 0 0;
+            y: 1 1 1;
+         }
+         description { state: "default" 0.0;
+            max: 0 0;
+         }
+      }
+      part { name: "sub_whole"; type: SPACER;
+         description { state: "default" 0.0;
+            rel1.relative: 0.0 1.0;
+            rel1.to_y: "left_constraint";
+            rel2.relative: 1.0 0.0;
+            rel2.to_y: "right_constraint";
+         }
+      }
       part { name: "whole_left"; type: RECT;
          description { state: "default" 0.0;
             rel2.to_y: "elm.bar";
@@ -415,7 +520,7 @@ group { name: "elm/panes/horizontal/flush";
          }
       }
       part { name: "elm.bar"; type: SPACER;
-         dragable { confine: "whole";
+         dragable { confine: "sub_whole";
             x: 0 0 0;
             y: 1 1 1;
          }
diff --git a/src/lib/elm_panes.c b/src/lib/elm_panes.c
index 3826dd251..dfb6e828c 100644
--- a/src/lib/elm_panes.c
+++ b/src/lib/elm_panes.c
@@ -178,6 +178,87 @@ _on_unpressed(void *data,
      }
 }
 
+static void
+_set_min_size(void *data)
+{
+   ELM_PANES_DATA_GET(data, sd);
+   ELM_WIDGET_DATA_GET_OR_RETURN(data, wd);
+
+   double sizer = sd->right_min_relative_size;
+   double sizel = sd->left_min_relative_size;
+   if ((sd->left_min_relative_size + sd->right_min_relative_size) > 1)
+     {
+        double sum = sizer + sizel;
+        sizer = sizer / sum;
+        sizel = sizel / sum;
+     }
+   if (sd->horizontal)
+     {
+        edje_object_part_drag_value_set
+           (wd->resize_obj, "right_constraint", 0.0, (1 - sizer));
+        edje_object_part_drag_value_set
+           (wd->resize_obj, "left_constraint", 0.0, sizel);
+     }
+   else
+     {
+        edje_object_part_drag_value_set
+           (wd->resize_obj, "right_constraint", (1 - sizer), 0.0);
+        edje_object_part_drag_value_set
+           (wd->resize_obj, "left_constraint", sizel, 0.0);
+     }
+}
+
+static void
+_update_fixed_sides(void *data)
+{
+   ELM_PANES_DATA_GET(data, sd);
+   ELM_WIDGET_DATA_GET_OR_RETURN(data, wd);
+   Evas_Coord w, h;
+   evas_object_geometry_get(wd->resize_obj, NULL, NULL, &w, &h);
+
+   if (sd->right_min_size_is_relative)
+     {
+        if (sd->horizontal)
+           sd->right_min_size = (int)(h * sd->right_min_relative_size);
+        else
+           sd->right_min_size =(int)(w * sd->right_min_relative_size);
+     }
+   else
+     {
+        sd->right_min_relative_size = 0;
+        if (sd->horizontal && (h > 0))
+              sd->right_min_relative_size = sd->right_min_size / (double)h;
+        if (!sd->horizontal && (w > 0))
+              sd->right_min_relative_size = sd->right_min_size / (double)w;
+     }
+
+   if(sd->left_min_size_is_relative)
+     {
+        if (sd->horizontal)
+             sd->left_min_size = (int)(h * sd->left_min_relative_size);
+        else
+           sd->left_min_size = (int)(w * sd->left_min_relative_size);
+     }
+   else
+     {
+        sd->left_min_relative_size = 0;
+        if (sd->horizontal && (h > 0))
+           sd->left_min_relative_size = sd->left_min_size / (double)h;
+        if (!sd->horizontal && (w > 0))
+           sd->left_min_relative_size = sd->left_min_size / (double)w;
+     }
+   _set_min_size(data);
+}
+
+static void
+_on_resize(void *data,
+           Evas *e EINA_UNUSED,
+           Evas_Object *obj EINA_UNUSED,
+           void *event_info EINA_UNUSED)
+{
+  _update_fixed_sides(data);
+}
+
 EOLIAN static void
 _elm_panes_evas_object_smart_add(Eo *obj, Elm_Panes_Data *_pd EINA_UNUSED)
 {
@@ -205,6 +286,17 @@ _elm_panes_evas_object_smart_add(Eo *obj, Elm_Panes_Data *_pd EINA_UNUSED)
    edje_object_signal_callback_add
      (wd->resize_obj, "elm,action,unpress", "*",
      _on_unpressed, obj);
+   evas_object_event_callback_add
+     (wd->resize_obj, EVAS_CALLBACK_RESIZE,
+     _on_resize, obj);
+
+   sd->right_min_size_is_relative = EINA_TRUE;
+   sd->left_min_size_is_relative = EINA_TRUE;
+   sd->right_min_size = 0;
+   sd->left_min_size = 0;
+   sd->right_min_relative_size = 0;
+   sd->left_min_relative_size = 0;
+   _update_fixed_sides(obj);
 
    elm_widget_can_focus_set(obj, EINA_FALSE);
 
@@ -329,6 +421,7 @@ _elm_panes_horizontal_set(Eo *obj, Elm_Panes_Data *sd, Eina_Bool horizontal)
 {
    sd->horizontal = horizontal;
    eo_do(obj, elm_obj_widget_theme_apply());
+   _update_fixed_sides(obj);
 
    elm_panes_content_left_size_set(obj, 0.5);
 }
@@ -367,6 +460,66 @@ _elm_panes_fixed_get(Eo *obj EINA_UNUSED, Elm_Panes_Data *sd)
    return sd->fixed;
 }
 
+EOLIAN static void
+_elm_panes_content_left_min_relative_size_set(Eo *obj, Elm_Panes_Data *_pd, double size)
+{
+   _pd->left_min_relative_size = size;
+   if (_pd->left_min_relative_size < 0) _pd->left_min_relative_size = 0;
+   _pd->left_min_size_is_relative = EINA_TRUE;
+   _update_fixed_sides(obj);
+}
+
+EOLIAN static double
+_elm_panes_content_left_min_relative_size_get(Eo *obj EINA_UNUSED, Elm_Panes_Data *_pd)
+{
+   return _pd->left_min_relative_size;
+}
+
+EOLIAN static void
+_elm_panes_content_right_min_relative_size_set(Eo *obj, Elm_Panes_Data *_pd, double size)
+{
+   _pd->right_min_relative_size = size;
+   if (_pd->right_min_relative_size < 0) _pd->right_min_relative_size = 0;
+   _pd->right_min_size_is_relative = EINA_TRUE;
+   _update_fixed_sides(obj);
+}
+
+EOLIAN static double
+_elm_panes_content_right_min_relative_size_get(Eo *obj EINA_UNUSED, Elm_Panes_Data *_pd)
+{
+   return _pd->right_min_relative_size;
+}
+
+EOLIAN static void
+_elm_panes_content_left_min_size_set(Eo *obj, Elm_Panes_Data *_pd, Evas_Coord size)
+{
+   _pd->left_min_size = size;
+   if (_pd->left_min_size < 0) _pd->left_min_size = 0;
+   _pd->left_min_size_is_relative = EINA_FALSE;
+   _update_fixed_sides(obj);
+}
+
+EOLIAN static Evas_Coord
+_elm_panes_content_left_min_size_get(Eo *obj EINA_UNUSED, Elm_Panes_Data *_pd)
+{
+   return _pd->left_min_size;
+}
+
+EOLIAN static void
+_elm_panes_content_right_min_size_set(Eo *obj, Elm_Panes_Data *_pd, Evas_Coord size)
+{
+   _pd->right_min_size = size;
+   if (_pd->right_min_size < 0) _pd->right_min_size = 0;
+   _pd->right_min_size_is_relative = EINA_FALSE;
+   _update_fixed_sides(obj);
+}
+
+EOLIAN static Evas_Coord
+_elm_panes_content_right_min_size_get(Eo *obj EINA_UNUSED, Elm_Panes_Data *_pd)
+{
+   return _pd->right_min_size;
+}
+
 EOLIAN static Eina_Bool
 _elm_panes_elm_widget_focus_next_manager_is(Eo *obj EINA_UNUSED, Elm_Panes_Data *_pd EINA_UNUSED)
 {
diff --git a/src/lib/elm_panes.eo b/src/lib/elm_panes.eo
index 0bdbd084b..955f87aaf 100644
--- a/src/lib/elm_panes.eo
+++ b/src/lib/elm_panes.eo
@@ -140,6 +140,122 @@ class Elm_Panes (Elm_Layout)
             of right side. */
          }
       }
+      content_left_min_relative_size {
+         set {
+            /*@
+             Set the relative minimum size of panes widget's left side.
+
+             @param obj The panes object.
+             @param size double value between 0.0 and 1.0 representing size
+             proportion of minimum size of left side.
+
+             @see elm_panes_content_left_min_size_relative_get()
+
+             @ingroup Panes */
+         }
+         get {
+            /*@
+             Get the relative minimum size of panes widget's left side.
+
+             @param obj The panes object.
+             @return double value between 0.0 and 1.0 representing size proportion
+             of minimum size of left side.
+
+             @see elm_panes_content_left_min_relative_size_set() for more details.
+
+             @ingroup Panes */
+         }
+         values {
+            double size; /*@ value between 0.0 and 1.0 representing size proportion
+                           of minimum size of left side. */
+         }
+      }
+      content_right_min_relative_size {
+         set {
+            /*@
+             Set the relative minimum size of panes widget's right side.
+
+             @param obj The panes object.
+             @param size double value between 0.0 and 1.0 representing size proportion
+             of minimum size of right side.
+
+             @see elm_panes_content_right_min_relative_size_get()
+
+             @ingroup Panes */
+         }
+         get {
+            /*@
+             Get the relative minimum size of panes widget's right side.
+
+             @param obj The panes object.
+             @return double value between 0.0 and 1.0 representing size proportion
+             of minimum size of right side.
+
+             @see elm_panes_content_right_min_size_set() for more details.
+
+             @ingroup Panes */
+         }
+         values {
+            double size; /*@ value between 0.0 and 1.0 representing size proportion
+                           of minimum size of right side. */
+         }
+      }
+      content_left_min_size {
+         set {
+            /*@
+            Set the absolute minimum size of panes widget's left side.
+
+            @param obj The panes object.
+            @param size int value representing minimum size of left side in pixels.
+
+            @see elm_panes_content_left_min_size_get()
+
+            @ingroup Panes */
+         }
+         get {
+            /*@
+            Get the absolute minimum size of panes widget's left side.
+
+            @param obj The panes object.
+            @retur int value representing minimum size of left side in pixels.
+
+            @see elm_panes_content_left_min_size_set() for more details.
+
+            @ingroup Panes */
+         }
+         values {
+            Evas_Coord size; /*@ value representing minimum size of left side
+                               in pixels. */
+         }
+      }
+      content_right_min_size {
+         set {
+            /*@
+            Set the absolute minimum size of panes widget's right side.
+
+            @param obj The panes object.
+            @param size int value representing minimum size of right side in pixels.
+
+            @see elm_panes_content_right_min_size_get()
+
+            @ingroup Panes */
+         }
+         get {
+            /*@
+            Get the absolute minimum size of panes widget's right side.
+
+            @param obj The panes object.
+            @retur int value representing minimum size of right side in pixels.
+
+            @see elm_panes_content_right_min_size_set() for more details.
+
+            @ingroup Panes */
+         }
+         values {
+            Evas_Coord size; /*@ value representing minimum size of right side
+                               in pixels. */
+         }
+      }
    }
    implements {
       class::constructor;
diff --git a/src/lib/elm_panes_eo.h b/src/lib/elm_panes_eo.h
index d0284fb9a..659a93b8b 100644
--- a/src/lib/elm_panes_eo.h
+++ b/src/lib/elm_panes_eo.h
@@ -1 +1 @@
-#include "elm_panes.eo.h"
\ No newline at end of file
+#include "elm_panes.eo.h"
diff --git a/src/lib/elm_panes_legacy.h b/src/lib/elm_panes_legacy.h
index 7ee243a75..c1c625bc5 100644
--- a/src/lib/elm_panes_legacy.h
+++ b/src/lib/elm_panes_legacy.h
@@ -11,4 +11,4 @@
  */
 EAPI Evas_Object                 *elm_panes_add(Evas_Object *parent);
 
-#include "elm_panes.eo.legacy.h"
\ No newline at end of file
+#include "elm_panes.eo.legacy.h"
diff --git a/src/lib/elm_widget_panes.h b/src/lib/elm_widget_panes.h
index 480b73e68..be5e88420 100644
--- a/src/lib/elm_widget_panes.h
+++ b/src/lib/elm_widget_panes.h
@@ -28,9 +28,15 @@ struct _Elm_Panes_Data
       Eina_Bool move;
    } move;
 
+   double                left_min_relative_size;
+   double                right_min_relative_size;
+   Evas_Coord            left_min_size;
+   Evas_Coord            right_min_size;
    Eina_Bool             double_clicked : 1;
    Eina_Bool             horizontal : 1;
    Eina_Bool             fixed : 1;
+   Eina_Bool             left_min_size_is_relative : 1;
+   Eina_Bool             right_min_size_is_relative : 1;
 };
 
 /**