maps 1.10.1

Inspect, compare and align multiple grid maps in an intuitive & fast GUI
Documentation 
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use eframe::egui;
use log::log_enabled;

use crate::app::{ActiveMovable, AppState, ViewMode};

impl AppState {
    fn footer_left(&mut self, ui: &mut egui::Ui, narrow: bool) {
        if !narrow && let Some(active_tool) = self.status.active_tool.as_ref() {
            if self.options.view_mode == ViewMode::Aligned {
                ui.label(active_tool)
                    .on_hover_text("Magnification can be changed in the options side menu.");
            } else {
                ui.label(format!(
                    "🔍 ({:.1}m) {}",
                    self.options.lens.size_meters, active_tool
                ));
            }
            ui.separator();
        }
        if let Some(pos) = self.status.hover_position {
            ui.label(format!("⌖ x: {:.3}m  y: {:.3}m", pos.x, pos.y,));
            ui.separator();
        }
        if let Some(move_action) = &self.status.move_action
            && self.options.view_mode == ViewMode::Aligned
        {
            ui.label(move_action);
            ui.separator();
        }
    }

    fn select_movable(&mut self, ui: &mut egui::Ui) {
        if self.options.active_movable == ActiveMovable::MapPose {
            // Show a combo box to select the map for pose editing.
            self.pose_edit_combo_box(ui);
        }
        // Show combo box to select the active movable.
        egui::ComboBox::from_label("Movable:")
            .width(0.) // Fit as small as possible.
            .selected_text(self.options.active_movable.to_string())
            .show_ui(ui, |ui| {
                ui.selectable_value(
                    &mut self.options.active_movable,
                    ActiveMovable::MapPose,
                    "Map Pose",
                );
                ui.selectable_value(
                    &mut self.options.active_movable,
                    ActiveMovable::Grid,
                    "Grid",
                );
            })
            .response
            .on_hover_text("Select what can be moved by the WASD/QE keys.");
    }

    fn footer_right(&mut self, ui: &mut egui::Ui, narrow: bool) {
        ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
            if ui
                .add(egui::Button::new("ℹ").fill(ui.visuals().window_fill()))
                .on_hover_text("Open the information window.")
                .clicked()
            {
                self.options.help_visible = !self.options.help_visible;
            }
            ui.separator();
            if log_enabled!(log::Level::Debug) {
                if ui
                    .add(egui::Button::new("🛠").fill(ui.visuals().window_fill()))
                    .on_hover_text("Open the debug window.")
                    .clicked()
                {
                    self.status.debug_window_active = !self.status.debug_window_active;
                }
                ui.separator();
            }
            if self.options.view_mode == ViewMode::Aligned && !narrow {
                ui.scope(|ui| {
                    // Fill combo box also with dark color to fit the style of the footer panel.
                    ui.visuals_mut().widgets.inactive.weak_bg_fill = ui.visuals().window_fill();
                    self.select_movable(ui);
                    ui.separator();
                });
            }
            egui::warn_if_debug_build(ui);
        });
    }

    pub(crate) fn footer_panel(&mut self, ui: &mut egui::Ui) {
        egui::Panel::bottom("footer").show_inside(ui, |ui| {
            ui.horizontal(|ui| {
                // Hide non-essential things if the available width is too narrow.
                let narrow = ui.available_width() < 750.;
                self.footer_left(ui, narrow);
                self.footer_right(ui, narrow);
            });
        });
    }
}