"Modeless/modal" -> "Grab/ungrab keyboard and pointer"

And add an OSD notification.

README.md

@@ -35,5 +35,5 @@ Then save your beautiful work by taking a screenshot.
 
 * Screenshot Tool extension:
 
- [Screenshot Tool](https://extensions.gnome.org/extension/1112/screenshot-tool/) is a convenient extension to “create, copy, store and upload screenshots”. To use it while drawing mode is active, toggle the area selection mode thanks to the Screenshot Tool shortcut (`Super + F11` by default, see its preferences) and **hold** the `space` key when selecting the area with pointer to avoid drawing.
+ [Screenshot Tool](https://extensions.gnome.org/extension/1112/screenshot-tool/) is a convenient extension to “create, copy, store and upload screenshots”. In order to select a screenshoot area with your pointer while keeping the drawing in place, you need first to tell DrawOnYourScreen to ungrab the pointer (`Ctrl + Super + Alt + D`).
 

extension.js

@@ -351,7 +351,7 @@ var AreaManager = new Lang.Class({
         }
     },
     
-    toggleModal: function() {
+    toggleModal: function(source) {
         if (!this.activeArea)
             return;
         
@@ -359,6 +359,8 @@ var AreaManager = new Lang.Class({
         
         if (Main._findModal(this.activeArea) != -1) {
             Main.popModal(this.activeArea);
+            if (source && source == global.display)
+                this.showOsd(null, 'touchpad-disabled-symbolic', _("Keyboard and pointer released"), null, null, false);
             setCursor('DEFAULT');
             this.activeArea.reactive = false;
             this.removeInternalKeybindings();
@@ -370,6 +372,8 @@ var AreaManager = new Lang.Class({
             this.addInternalKeybindings();
             this.activeArea.reactive = true;
             this.activeArea.initPointerCursor();
+            if (source && source == global.display)
+                this.showOsd(null, 'input-touchpad-symbolic', _("Keyboard and pointer grabbed"), null, null, false);
         }
         
         return true;

locale/draw-on-your-screen.pot

@@ -56,7 +56,8 @@ msgstr ""
 msgid "Enter/leave drawing mode"
 msgstr ""
 
-msgid "Toggle modeless/modal"
+# There is a similar text in GNOME Boxes (https://gitlab.gnome.org/GNOME/gnome-boxes/tree/master/po)
+msgid "Grab/ungrab keyboard and pointer"
 msgstr ""
 
 msgid "Erase all drawings"
@@ -451,6 +452,13 @@ msgstr ""
 msgid "Entering drawing mode"
 msgstr ""
 
+# "released" as the opposite of "grabbed"
+msgid "Keyboard and pointer released"
+msgstr ""
+
+msgid "Keyboard and pointer grabbed"
+msgstr ""
+
 # %s is a key label
 msgid ""
 "Press <i>%s</i> to get\n"

prefs.js

@@ -37,7 +37,7 @@ const MARGIN = 10;
 
 var GLOBAL_KEYBINDINGS = {
     'toggle-drawing': "Enter/leave drawing mode",
-    'toggle-modal': "Toggle modeless/modal",
+    'toggle-modal': "Grab/ungrab keyboard and pointer",
     'erase-drawing': "Erase all drawings"
 };