Add a hotkey to select a random primary color (#622)

* Add shortcut to select a random primary color (#549)

* Rename random primary color message and reduce the number of calls to
generate_uuid

* Add documentation for SelectRandomPrimaryColor message

* Set the alpha value to 255 instead of a random value #622

Co-authored-by: Florent Collin <florentcollin23@gmail.com>

editor/src/input/input_mapper.rs

@@ -142,7 +142,8 @@ impl Default for Mapping {
 			// Colors
 			entry! {action=ToolMessage::ResetColors, key_down=KeyX, modifiers=[KeyShift, KeyControl]},
 			entry! {action=ToolMessage::SwapColors, key_down=KeyX, modifiers=[KeyShift]},
-			// Editor actions
+			entry! {action=ToolMessage::SelectRandomPrimaryColor, key_down=KeyC, modifiers=[KeyAlt]},
+			// Editor Actions
 			entry! {action=FrontendMessage::TriggerFileUpload, key_down=KeyO, modifiers=[KeyControl]},
 			// Document actions
 			entry! {action=DocumentMessage::Redo, key_down=KeyZ, modifiers=[KeyControl, KeyShift]},

editor/src/viewport_tools/tool_message.rs

@@ -87,6 +87,7 @@ pub enum ToolMessage {
 	SelectPrimaryColor {
 		color: Color,
 	},
+	SelectRandomPrimaryColor,
 	SelectSecondaryColor {
 		color: Color,
 	},

editor/src/viewport_tools/tool_message_handler.rs

@@ -103,6 +103,19 @@ impl MessageHandler<ToolMessage, (&DocumentMessageHandler, &InputPreprocessorMes
 
 				update_working_colors(&self.tool_state.document_tool_data, responses);
 			}
+			SelectRandomPrimaryColor => {
+				// Select a random primary color (rgba) based on an UUID
+				let document_data = &mut self.tool_state.document_tool_data;
+
+				let random_number = generate_uuid();
+				let r = (random_number >> 16) as u8;
+				let g = (random_number >> 8) as u8;
+				let b = random_number as u8;
+				let random_color = Color::from_rgba8(r, g, b, 255);
+				document_data.primary_color = random_color;
+
+				update_working_colors(document_data, responses);
+			}
 			SelectSecondaryColor { color } => {
 				let document_data = &mut self.tool_state.document_tool_data;
 				document_data.secondary_color = color;
@@ -137,7 +150,7 @@ impl MessageHandler<ToolMessage, (&DocumentMessageHandler, &InputPreprocessorMes
 	}
 
 	fn actions(&self) -> ActionList {
-		let mut list = actions!(ToolMessageDiscriminant; ResetColors, SwapColors, ActivateTool);
+		let mut list = actions!(ToolMessageDiscriminant; SelectRandomPrimaryColor, ResetColors, SwapColors, ActivateTool);
 		list.extend(self.tool_state.tool_data.active_tool().actions());
 
 		list