committing to insanityHEADmaster

1 files changed, 66 insertions, 0 deletions

diff --git a/src/core/components/help.rs b/src/core/components/help.rs
new file mode 100644
index 0000000..fb7ede8
--- /dev/null
+++ b/src/core/components/help.rs
@@ -0,0 +1,66 @@
+use eframe::egui;
+use egui_commonmark::{CommonMarkCache, CommonMarkViewer};
+
+#[derive(Clone, Copy)]
+pub struct HelpWindowOptions {
+    pub min_size: egui::Vec2,
+    pub max_size_factor: f32,
+    pub default_width_factor: f32,
+    pub default_height_factor: f32,
+}
+
+impl Default for HelpWindowOptions {
+    fn default() -> Self {
+        Self {
+            min_size: egui::vec2(320.0, 240.0),
+            max_size_factor: 0.9,
+            default_width_factor: 0.5,
+            default_height_factor: 0.6,
+        }
+    }
+}
+
+pub fn show_help_window(
+    ctx: &egui::Context,
+    cache: &mut CommonMarkCache,
+    id_source: impl std::hash::Hash,
+    title: &str,
+    markdown_content: &str,
+    is_open: &mut bool,
+    options: HelpWindowOptions,
+) {
+    if !*is_open {
+        return;
+    }
+
+    let viewport = ctx.available_rect();
+    let max_size = egui::vec2(
+        viewport.width() * options.max_size_factor,
+        viewport.height() * options.max_size_factor,
+    );
+    let default_size = egui::vec2(
+        (viewport.width() * options.default_width_factor)
+            .clamp(options.min_size.x, max_size.x.max(options.min_size.x)),
+        (viewport.height() * options.default_height_factor)
+            .clamp(options.min_size.y, max_size.y.max(options.min_size.y)),
+    );
+
+    let mut open = *is_open;
+    egui::Window::new(title)
+        .id(egui::Id::new(id_source))
+        .collapsible(false)
+        .resizable(true)
+        .default_size(default_size)
+        .min_size(options.min_size)
+        .max_size(max_size)
+        .open(&mut open)
+        .show(ctx, |ui| {
+            egui::ScrollArea::vertical()
+                .auto_shrink([false, false])
+                .show(ui, |ui| {
+                    CommonMarkViewer::new().show(ui, cache, markdown_content);
+                });
+        });
+
+    *is_open = open;
+}