Create side panel & global popup

Create a side panel UI element for desktop with three buttons for:
adding a column, settings, and account management. The account
management button is temporary pending a better design. It is the only
one that is interactable at the moment. When the user clicks it, the
global popup window will be shown and the AccountManagementView will be
presented on the window. The user can click on the X on the top right of
the window to close it.

Signed-off-by: kernelkind <kernelkind@gmail.com>
Signed-off-by: William Casarin <jb55@jb55.com>

src/ui/side_panel.rs

@@ -0,0 +1,93 @@
+use egui::{Button, Layout, SidePanel, Vec2};
+
+use crate::ui::global_popup::GlobalPopupType;
+
+use super::{
+    persist_state::{PERSISTED_GLOBAL_POPUP, PERSISTED_SIDE_PANEL},
+    View,
+};
+
+pub struct DesktopSidePanel<'a> {
+    ctx: &'a egui::Context,
+}
+
+static ID: &str = "left panel";
+
+impl<'a> View for DesktopSidePanel<'a> {
+    fn ui(&mut self, ui: &mut egui::Ui) {
+        DesktopSidePanel::inner(self.ctx, ui);
+    }
+}
+
+impl<'a> DesktopSidePanel<'a> {
+    pub fn new(ctx: &'a egui::Context) -> Self {
+        DesktopSidePanel { ctx }
+    }
+
+    pub fn inner(ctx: &egui::Context, ui: &mut egui::Ui) {
+        let dark_mode = ui.ctx().style().visuals.dark_mode;
+        let spacing_amt = 16.0;
+        ui.with_layout(Layout::bottom_up(egui::Align::Center), |ui| {
+            ui.add_space(spacing_amt);
+            if ui
+                .add_sized(Vec2::new(32.0, 32.0), Button::new("A"))
+                .clicked()
+            {
+                PERSISTED_SIDE_PANEL.set_state(ctx, Some(GlobalPopupType::AccountManagement));
+                PERSISTED_GLOBAL_POPUP.set_state(ctx, true);
+            }
+            ui.add_space(spacing_amt);
+            ui.add(settings_button(dark_mode));
+            ui.add_space(spacing_amt);
+            ui.add(add_column_button(dark_mode));
+            ui.add_space(spacing_amt);
+        });
+    }
+
+    pub fn panel() -> SidePanel {
+        egui::SidePanel::left(ID).resizable(false).exact_width(40.0)
+    }
+}
+
+fn settings_button(dark_mode: bool) -> egui::Button<'static> {
+    let _ = dark_mode;
+    let img_data = egui::include_image!("../../assets/icons/settings_dark_4x.png");
+
+    egui::Button::image(egui::Image::new(img_data).max_width(32.0)).frame(false)
+}
+
+fn add_column_button(dark_mode: bool) -> egui::Button<'static> {
+    let _ = dark_mode;
+    let img_data = egui::include_image!("../../assets/icons/add_column_dark_4x.png");
+
+    egui::Button::image(egui::Image::new(img_data).max_width(32.0)).frame(false)
+}
+
+mod preview {
+    use crate::ui::Preview;
+
+    use super::*;
+
+    pub struct DesktopSidePanelPreview {}
+
+    impl DesktopSidePanelPreview {
+        fn new() -> Self {
+            DesktopSidePanelPreview {}
+        }
+    }
+
+    impl View for DesktopSidePanelPreview {
+        fn ui(&mut self, ui: &mut egui::Ui) {
+            let mut panel = DesktopSidePanel::new(ui.ctx());
+            DesktopSidePanel::panel().show(ui.ctx(), |ui| panel.ui(ui));
+        }
+    }
+
+    impl Preview for DesktopSidePanel<'_> {
+        type Prev = DesktopSidePanelPreview;
+
+        fn preview() -> Self::Prev {
+            DesktopSidePanelPreview::new()
+        }
+    }
+}