Implement a global Color Picker

src/Layouts/Partials/BorderItem.vala

@@ -17,12 +17,14 @@
  * along with Akira. If not, see <https://www.gnu.org/licenses/>.
  *
  * Authored by: Alessandro "alecaddd" Castellani <castellani.ale@gmail.com>
+ * Authored by: Ivan "isneezy" Vilanculo <ivilanculo@gmail.com>
  */
 
 public class Akira.Layouts.Partials.BorderItem : Gtk.Grid {
     public weak Akira.Window window { get; construct; }
 
     private Gtk.Grid color_chooser;
+    private Gtk.Button eyedropper_button;
     private Gtk.Button hidden_button;
     private Gtk.Button delete_button;
     private Gtk.Image hidden_button_icon;
@@ -31,6 +33,7 @@ public class Akira.Layouts.Partials.BorderItem : Gtk.Grid {
     public Akira.Partials.ColorField color_container;
     private Gtk.Popover color_popover;
     private Gtk.Grid color_picker;
+    private Akira.Utils.ColorPicker eyedropper;
     private Gtk.ColorChooserWidget color_chooser_widget;
 
     public Akira.Models.BordersItemModel model { get; construct; }
@@ -165,6 +168,15 @@ public class Akira.Layouts.Partials.BorderItem : Gtk.Grid {
         color_chooser.attach (color_container, 1, 0, 1, 1);
         color_chooser.attach (tickness_container, 2, 0, 1, 1);
 
+        eyedropper_button = new Gtk.Button ();
+        eyedropper_button.get_style_context ().add_class (Gtk.STYLE_CLASS_FLAT);
+        eyedropper_button.get_style_context ().add_class ("button-rounded");
+        eyedropper_button.can_focus = false;
+        eyedropper_button.valign = Gtk.Align.CENTER;
+        eyedropper_button.set_tooltip_text (_("Pick color"));
+        eyedropper_button.add (new Gtk.Image.from_icon_name ("preferences-color-symbolic",
+            Gtk.IconSize.SMALL_TOOLBAR));
+
         hidden_button = new Gtk.Button ();
         hidden_button.get_style_context ().add_class (Gtk.STYLE_CLASS_FLAT);
         hidden_button.get_style_context ().add_class ("button-rounded");
@@ -191,20 +203,36 @@ public class Akira.Layouts.Partials.BorderItem : Gtk.Grid {
         color_popover.add (color_picker);
 
         attach (color_chooser, 0, 0, 1, 1);
-        attach (hidden_button, 1, 0, 1, 1);
-        attach (delete_button, 2, 0, 1, 1);
+        attach (eyedropper_button, 1, 0, 1, 1);
+        attach (hidden_button, 2, 0, 1, 1);
+        attach (delete_button, 3, 0, 1, 1);
 
         set_color_chooser_color ();
         set_button_color ();
     }
 
     private void create_event_bindings () {
+        eyedropper_button.clicked.connect (on_eyedropper_click);
         delete_button.clicked.connect (on_delete_item);
         hidden_button.clicked.connect (toggle_visibility);
         model.notify.connect (on_model_changed);
         color_chooser_widget.notify["rgba"].connect (on_color_changed);
     }
 
+    private void on_eyedropper_click () {
+        eyedropper = new Akira.Utils.ColorPicker ();
+        eyedropper.show_all ();
+
+        eyedropper.picked.connect ((picked_color) => {
+            color_chooser_widget.set_rgba (picked_color);
+            eyedropper.close ();
+        });
+
+        eyedropper.cancelled.connect (() => {
+            eyedropper.close ();
+        });
+    }
+
     private void on_model_changed () {
         model.item.reset_colors ();
         set_button_color ();

src/Layouts/Partials/FillItem.vala

@@ -18,12 +18,14 @@
  *
  * Authored by: Giacomo "giacomoalbe" Alberini <giacomoalbe@gmail.com>
  * Authored by: Alessandro "alecaddd" Castellani <castellani.ale@gmail.com>
+ * Authored by: Ivan "isneezy" Vilanculo <ivilanculo@gmail.com>
  */
 
 public class Akira.Layouts.Partials.FillItem : Gtk.Grid {
     public weak Akira.Window window { get; construct; }
 
     private Gtk.Grid fill_chooser;
+    private Gtk.Button eyedropper_button;
     private Gtk.Button hidden_button;
     private Gtk.Button delete_button;
     private Gtk.Image hidden_button_icon;
@@ -33,6 +35,7 @@ public class Akira.Layouts.Partials.FillItem : Gtk.Grid {
     private Gtk.Popover color_popover;
     private Gtk.Grid color_picker;
     private Gtk.ColorChooserWidget color_chooser_widget;
+    private Akira.Utils.ColorPicker eyedropper;
 
     public Akira.Models.FillsItemModel model { get; construct; }
 
@@ -167,6 +170,15 @@ public class Akira.Layouts.Partials.FillItem : Gtk.Grid {
         fill_chooser.attach (color_container, 1, 0, 1, 1);
         fill_chooser.attach (opacity_container, 2, 0, 1, 1);
 
+        eyedropper_button = new Gtk.Button ();
+        eyedropper_button.get_style_context ().add_class (Gtk.STYLE_CLASS_FLAT);
+        eyedropper_button.get_style_context ().add_class ("button-rounded");
+        eyedropper_button.can_focus = false;
+        eyedropper_button.valign = Gtk.Align.CENTER;
+        eyedropper_button.set_tooltip_text (_("Pick color"));
+        eyedropper_button.add (new Gtk.Image.from_icon_name ("preferences-color-symbolic",
+            Gtk.IconSize.SMALL_TOOLBAR));
+
         hidden_button = new Gtk.Button ();
         hidden_button.get_style_context ().add_class (Gtk.STYLE_CLASS_FLAT);
         hidden_button.get_style_context ().add_class ("button-rounded");
@@ -193,20 +205,36 @@ public class Akira.Layouts.Partials.FillItem : Gtk.Grid {
         color_popover.add (color_picker);
 
         attach (fill_chooser, 0, 0, 1, 1);
-        attach (hidden_button, 1, 0, 1, 1);
-        attach (delete_button, 2, 0, 1, 1);
+        attach (eyedropper_button, 1, 0, 1, 1);
+        attach (hidden_button, 2, 0, 1, 1);
+        attach (delete_button, 3, 0, 1, 1);
 
         set_color_chooser_color ();
         set_button_color ();
     }
 
     private void create_event_bindings () {
+        eyedropper_button.clicked.connect (on_eyedropper_click);
         delete_button.clicked.connect (on_delete_item);
         hidden_button.clicked.connect (toggle_visibility);
         model.notify.connect (on_model_changed);
         color_chooser_widget.notify["rgba"].connect (on_color_changed);
     }
 
+    private void on_eyedropper_click () {
+        eyedropper = new Akira.Utils.ColorPicker ();
+        eyedropper.show_all ();
+
+        eyedropper.picked.connect ((picked_color) => {
+            color_chooser_widget.set_rgba (picked_color);
+            eyedropper.close ();
+        });
+
+        eyedropper.cancelled.connect (() => {
+            eyedropper.close ();
+        });
+    }
+
     private void on_model_changed () {
         model.item.reset_colors ();
         set_button_color ();

src/Services/ActionManager.vala

@@ -17,6 +17,7 @@
 * along with Akira. If not, see <https://www.gnu.org/licenses/>.
 *
 * Authored by: Alessandro "Alecaddd" Castellani <castellani.ale@gmail.com>
+* Authored by: Ivan "isneezy" Vilanculo <vilanculoivan@gmail.com>
 */
 
 public class Akira.Services.ActionManager : Object {
@@ -64,6 +65,7 @@ public class Akira.Services.ActionManager : Object {
     public const string ACTION_FLIP_V = "action_flip_v";
     public const string ACTION_ESCAPE = "action_escape";
     public const string ACTION_SHORTCUTS = "action_shortcuts";
+    public const string ACTION_PICK_COLOR = "action_pick_color";
 
     public static Gee.MultiMap<string, string> action_accelerators = new Gee.HashMultiMap<string, string> ();
     public static Gee.MultiMap<string, string> typing_accelerators = new Gee.HashMultiMap<string, string> ();
@@ -101,6 +103,7 @@ public class Akira.Services.ActionManager : Object {
         { ACTION_FLIP_V, action_flip_v },
         { ACTION_ESCAPE, action_escape },
         { ACTION_SHORTCUTS, action_shortcuts },
+        { ACTION_PICK_COLOR, action_pick_color },
     };
 
     public ActionManager (Akira.Application akira_app, Akira.Window window) {
@@ -137,6 +140,7 @@ public class Akira.Services.ActionManager : Object {
         action_accelerators.set (ACTION_FLIP_H, "<Control>bracketleft");
         action_accelerators.set (ACTION_FLIP_V, "<Control>bracketright");
         action_accelerators.set (ACTION_SHORTCUTS, "F1");
+        action_accelerators.set (ACTION_PICK_COLOR, "<Alt>c");
 
         typing_accelerators.set (ACTION_ESCAPE, "Escape");
         typing_accelerators.set (ACTION_ARTBOARD_TOOL, "a");
@@ -452,6 +456,41 @@ public class Akira.Services.ActionManager : Object {
         dialog.present ();
     }
 
+    private void action_pick_color () {
+        weak Akira.Lib.Canvas canvas = window.main_window.main_canvas.canvas;
+        // Interrupt if no item is selected.
+        if (canvas.selected_bound_manager.selected_items.length () == 0) {
+            return;
+        }
+        foreach (var item in canvas.selected_bound_manager.selected_items) {
+            // Hide the ghost bound manager.
+            item.bounds_manager.hide ();
+        }
+        bool is_holding_shift = false;
+        var color_picker = new Akira.Utils.ColorPicker ();
+        color_picker.show_all ();
+        color_picker.key_pressed.connect (e => {
+            is_holding_shift = e.keyval == Gdk.Key.Shift_L;
+        });
+        color_picker.key_released.connect (e => {
+            is_holding_shift = e.keyval == Gdk.Key.Shift_L;
+        });
+        color_picker.cancelled.connect (() => {
+            color_picker.close ();
+        });
+        color_picker.picked.connect (color => {
+            foreach (var item in canvas.selected_bound_manager.selected_items) {
+                if (is_holding_shift) {
+                    item.border_color_string = Utils.Color.rgba_to_hex_string (color);
+                } else {
+                    item.color_string = Utils.Color.rgba_to_hex_string (color);
+                }
+                item.load_colors ();
+            }
+            color_picker.close ();
+        });
+    }
+
     public static void action_from_group (string action_name, ActionGroup? action_group) {
         action_group.activate_action (action_name, null);
     }

src/Utils/Color.vala

@@ -24,6 +24,10 @@ public class Akira.Utils.Color : Object {
         var rgba = Gdk.RGBA ();
         rgba.parse (rgba_string);
 
+        return rgba_to_hex_string (rgba);
+    }
+
+    public static string rgba_to_hex_string (Gdk.RGBA rgba) {
         return "#%02x%02x%02x".printf (
             (int) (rgba.red * 255),
             (int) (rgba.green * 255),