From 8d2c22e5714ae4230e89f82bf408403dcd8faca9 Mon Sep 17 00:00:00 2001
From: daa84 <daa84@inbox.ru>
Date: Thu, 31 Mar 2016 16:52:22 +0300
Subject: [PATCH] Repaint + some basic input

---
 Cargo.lock  |  1 +
 Cargo.toml  |  1 +
 src/main.rs |  1 +
 src/nvim.rs |  7 +++++++
 src/ui.rs   | 34 ++++++++++++++++++++++++++++++----
 5 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 38fd74d..9f85172 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,6 +3,7 @@ name = "neovim-gtk"
 version = "0.1.0"
 dependencies = [
  "cairo-rs 0.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glib 0.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "gtk 0.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "neovim-lib 0.1.0",
diff --git a/Cargo.toml b/Cargo.toml
index 2183d13..ae44453 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,6 +7,7 @@ build = "build.rs"
 [dependencies]
 cairo-rs = "0.0.8"
 glib = "0.0.8"
+gdk = "0.3.0"
 #neovim-lib = "0.1"
 rmp = "0.7"
 
diff --git a/src/main.rs b/src/main.rs
index 78b0059..9a630ef 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 extern crate gtk;
+extern crate gdk;
 extern crate glib;
 extern crate cairo;
 extern crate neovim_lib;
diff --git a/src/nvim.rs b/src/nvim.rs
index 5b3f68f..add19aa 100644
--- a/src/nvim.rs
+++ b/src/nvim.rs
@@ -16,6 +16,8 @@ pub trait RedrawEvents {
     fn on_clear(&mut self);
 
     fn on_resize(&mut self, columns: u64, rows: u64);
+
+    fn on_redraw(&self);
 }
 
 macro_rules! try_str {
@@ -72,6 +74,11 @@ fn nvim_cb(method: &str, params: Vec<Value>) {
                 println!("Unsupported event type {:?}", ev);
             }
         }
+
+        safe_call(move |ui| {
+            ui.on_redraw();
+            Ok(())
+        });
     } else {
         println!("Notification {}", method);
     }
diff --git a/src/ui.rs b/src/ui.rs
index 526eb21..eb71e98 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -5,7 +5,9 @@ use cairo;
 use gtk;
 use gtk::prelude::*;
 use gtk::{Window, WindowType, DrawingArea, Grid, ToolButton, ButtonBox, Orientation, Image};
-use neovim_lib::Neovim;
+use gdk;
+use gdk::EventKey;
+use neovim_lib::{Neovim, NeovimApi};
 
 use ui_model::UiModel;
 use nvim::RedrawEvents;
@@ -74,6 +76,7 @@ impl Ui {
 
         window.add(&grid);
         window.show_all();
+        window.connect_key_press_event(gtk_key_press);
         window.connect_delete_event(|_, _| {
             gtk::main_quit();
             Inhibit(false)
@@ -81,6 +84,22 @@ impl Ui {
     }
 }
 
+fn gtk_key_press(_: &Window, ev: &EventKey) -> Inhibit {
+    let keyval = ev.get_keyval();
+    if let Some(keyval_name) = gdk::keyval_name(keyval) {
+        UI.with(|ui_cell| {
+            let mut ui = ui_cell.borrow_mut();
+            let input = if keyval_name.starts_with("KP_") {
+                keyval_name.chars().skip(3).collect()
+            } else {
+                keyval_name
+            };
+            ui.nvim().input(&input).expect("Error run input command to nvim");
+        });
+    }
+    Inhibit(true)
+}
+
 fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
     let width = drawing_area.get_allocated_width() as f64;
     let height = drawing_area.get_allocated_height() as f64;
@@ -89,14 +108,17 @@ fn gtk_draw(drawing_area: &DrawingArea, ctx: &cairo::Context) -> Inhibit {
                                                 cairo::enums::FontSlant::Normal,
                                                 cairo::enums::FontWeight::Normal);
     ctx.set_font_face(font_face);
+
+    let font_extents = ctx.font_extents();
     UI.with(|ui_cell| {
-        ctx.set_source_rgb(0.0, 0.0, 0.0);
         let ui = ui_cell.borrow();
-        let mut line_y = 30.0;
+
+        ctx.set_source_rgb(0.0, 0.0, 0.0);
+        let mut line_y = font_extents.height;
         for line in ui.model.lines() {
             ctx.move_to(0.0, line_y);
             ctx.show_text(&line);
-            line_y += 30.0;
+            line_y += font_extents.height;
         }
     });
 
@@ -119,4 +141,8 @@ impl RedrawEvents for Ui {
     fn on_resize(&mut self, columns: u64, rows: u64) {
         self.model = UiModel::new(rows, columns);
     }
+
+    fn on_redraw(&self) {
+        self.drawing_area.queue_draw();
+    }
 }