From f92e9f6f07b1e3834c2ca58ce3510734819d08e4 Mon Sep 17 00:00:00 2001
From: Arne Dußin
Date: Wed, 27 Jan 2021 14:01:50 +0100
Subject: Rework graf karto to fit the client/server structure

---
 src/client/gui/tool_sidebar.rs | 91 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 src/client/gui/tool_sidebar.rs

(limited to 'src/client/gui/tool_sidebar.rs')

diff --git a/src/client/gui/tool_sidebar.rs b/src/client/gui/tool_sidebar.rs
new file mode 100644
index 0000000..3147bf8
--- /dev/null
+++ b/src/client/gui/tool_sidebar.rs
@@ -0,0 +1,91 @@
+//! The sidebar showing all tools available to the user. This toolbar handles changing the active tool
+//! based on the mouse input and (TODO!) keyboard inputs.
+// TODO: Currently, the keyboard shortcuts for tools are handled by the editor, but a lot speaks for
+// them being handled by the ToolSidebar instead.
+
+use crate::client::input::Input;
+use crate::client::tool::ToolType;
+use crate::client::Editor;
+use crate::math::Rect;
+use raylib::core::texture::Texture2D;
+use raylib::rgui::RaylibDrawGui;
+use raylib::{RaylibHandle, RaylibThread};
+use std::mem;
+
+/// The file containing textures for all buttons describing the tools.
+pub const BUTTON_FILE: &str = "assets/button/tool_buttons.png";
+
+/// Sidebar that renders and handles input for the tool activation buttons.
+pub struct ToolSidebar {
+    button_texture: Texture2D,
+    bindings_id: usize,
+    panel_rect: Rect<u16>,
+}
+
+impl ToolSidebar {
+    /// Create a new tool sidebar. There should be only one sidebar per program instance.
+    pub fn new(rl: &mut RaylibHandle, rlt: &RaylibThread, input: &mut Input) -> Self {
+        let button_texture = rl
+            .load_texture(rlt, BUTTON_FILE)
+            .expect("Could not read file containing tool icons.");
+
+        let panel_rect = Self::panel_rect(rl.get_screen_height() as u16);
+        let bindings_id = input.add_local_handler(panel_rect.clone());
+
+        Self {
+            button_texture,
+            bindings_id,
+            panel_rect,
+        }
+    }
+
+    fn panel_rect(screen_height: u16) -> Rect<u16> {
+        /* The width is currently hardcoded as 104, which is
+         * 64 (button-size) + 20 left gap + 20 right gap
+         */
+        Rect::new(0, 0, 104, screen_height)
+    }
+
+    /// Update the state of the tool sidebar. Due to raylib limitations, this is not where the tools
+    /// are selected for the editor, which happens in draw.
+    pub fn update(&mut self, screen_height: u16, input: &mut Input) {
+        let new_panel_rect = Self::panel_rect(screen_height);
+        if new_panel_rect != self.panel_rect {
+            self.panel_rect = new_panel_rect;
+            input.set_binding_rect(self.bindings_id, self.panel_rect);
+        }
+    }
+
+    /// Draw the tool buttons and encasing panel. Because of the way raylib works, this also handles
+    /// clicking on tool buttons, which may be changed in the future, should a different gui be
+    /// chosen.
+    pub fn draw(&self, rld: &mut impl RaylibDrawGui, editor: &mut Editor) {
+        rld.gui_panel(Rect::new(
+            self.panel_rect.x as f32,
+            self.panel_rect.y as f32,
+            self.panel_rect.w as f32,
+            self.panel_rect.h as f32,
+        ));
+
+        // TODO: Update to new input system. Create buttons that integrate.
+        let mut active = editor.active();
+        for i in 0..ToolType::NumTools as usize {
+            let is_current_active = active as usize == i;
+            if rld.gui_image_button_ex(
+                Rect::new(20., i as f32 * 100. + 20., 64., 64.),
+                None,
+                &self.button_texture,
+                Rect::new(
+                    is_current_active as u8 as f32 * 64.,
+                    i as f32 * 64.,
+                    64.,
+                    64.,
+                ),
+            ) {
+                active = unsafe { mem::transmute(i as u8) };
+            }
+        }
+
+        editor.set_active(active);
+    }
+}
-- 
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