Layout system implementation and applied to tool options bar (#499)

* initial layout system with tool options

* cargo fmt

* cargo fmt again

* document bar defined on the backend

* cargo fmt

* removed RC<RefCell>

* cargo fmt

* - fix increment behavior
- removed hashmap from layout message handler
- removed no op message from layoutMessage

* cargo fmt

* only send documentBar when zoom or rotation is updated

* ctrl-0 changes zoom properly

* Code review changes

Co-authored-by: Keavon Chambers <keavon@keavon.com>

editor/src/frontend/frontend_message.rs

@@ -1,8 +1,9 @@
 use super::utility_types::{FrontendDocumentDetails, MouseCursorIcon};
 use crate::document::layer_panel::{LayerPanelEntry, RawBuffer};
+use crate::layout::layout_message::LayoutTarget;
+use crate::layout::widgets::SubLayout;
 use crate::message_prelude::*;
 use crate::misc::HintData;
-use crate::viewport_tools::tool_options::ToolOptions;
 use crate::Color;
 
 use serde::{Deserialize, Serialize};
@@ -15,6 +16,7 @@ pub enum FrontendMessage {
 	DisplayConfirmationToCloseAllDocuments,
 	DisplayConfirmationToCloseDocument { document_id: u64 },
 	DisplayDialogAboutGraphite,
+	DisplayDialogComingSoon { issue: Option<i32> },
 	DisplayDialogError { title: String, description: String },
 	DisplayDialogPanic { panic_info: String, title: String, description: String },
 	DisplayDocumentLayerTreeStructure { data_buffer: RawBuffer },
@@ -30,11 +32,12 @@ pub enum FrontendMessage {
 
 	// Update prefix: give the frontend a new value or state for it to use
 	UpdateActiveDocument { document_id: u64 },
-	UpdateActiveTool { tool_name: String, tool_options: Option<ToolOptions> },
+	UpdateActiveTool { tool_name: String },
 	UpdateCanvasRotation { angle_radians: f64 },
 	UpdateCanvasZoom { factor: f64 },
 	UpdateDocumentArtboards { svg: String },
 	UpdateDocumentArtwork { svg: String },
+	UpdateDocumentBarLayout { layout_target: LayoutTarget, layout: SubLayout },
 	UpdateDocumentLayer { data: LayerPanelEntry },
 	UpdateDocumentOverlays { svg: String },
 	UpdateDocumentRulers { origin: (f64, f64), spacing: f64, interval: f64 },
@@ -42,5 +45,6 @@ pub enum FrontendMessage {
 	UpdateInputHints { hint_data: HintData },
 	UpdateMouseCursor { cursor: MouseCursorIcon },
 	UpdateOpenDocumentsList { open_documents: Vec<FrontendDocumentDetails> },
+	UpdateToolOptionsLayout { layout_target: LayoutTarget, layout: SubLayout },
 	UpdateWorkingColors { primary: Color, secondary: Color },
 }