From 09450176141cda7c074b3a2584d103ca3bad3026 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Wed, 24 Jan 2024 09:24:59 +0100
Subject: create simple theme

---
 src/main.rs | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 86 insertions(+), 9 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 5565edb..458abc3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,11 +2,12 @@ pub mod function_cache;
 pub mod math;
 pub mod ui;
 
+use iced::theme::{Button, TextInput};
 use iced::widget::{
-    button, canvas, container, pane_grid, responsive, text, text_input, Column, PaneGrid, row,
+    button, canvas, container, pane_grid, responsive, row, text, text_input, Column, PaneGrid, Text,
 };
-use iced::{executor, Renderer};
-use iced::{Application, Command, Element, Length, Settings, Theme};
+use iced::{alignment, executor, Font, Renderer, Theme};
+use iced::{Application, Command, Element, Length, Settings};
 use ui::graph::GraphCanvas;
 use ui::pane::{Pane, PaneKind};
 use ui::Message;
@@ -95,16 +96,30 @@ impl Application for Graph {
                             flist = flist.push(
                                 row![
                                     text_input("f(x) = x^2", f)
-                                    .on_input(move |s| Message::InputChanged(s, i))
-                                    .on_submit(Message::UpdateFunction(i)),
+                                        .style(TextInput::Custom(Box::new(
+                                            TextInputStyle::default()
+                                        )))
+                                        .on_input(move |s| Message::InputChanged(s, i))
+                                        .on_submit(Message::UpdateFunction(i)),
                                     button("-").on_press(Message::RemoveFunction(i))
-                                ].padding(5)
+                                ]
+                                .padding(5),
                             );
                         }
                         flist = flist.push(
-                            button("+")
-                                    .width(Length::Fill)
-                                .on_press(Message::AddFunction),
+                            button(
+                                Text::new("+")
+                                    .font(Font {
+                                        weight: iced::font::Weight::Bold,
+                                        ..Default::default()
+                                    })
+                                    .horizontal_alignment(alignment::Horizontal::Center)
+                                    .vertical_alignment(alignment::Vertical::Center)
+                                    .width(Length::Fill),
+                            )
+                            .style(Button::Custom(Box::new(ButtonStyle::default())))
+                            .width(Length::Fill)
+                            .on_press(Message::AddFunction),
                         );
                         flist.into()
                     }
@@ -133,3 +148,65 @@ impl Application for Graph {
         Theme::Dark
     }
 }
+
+#[derive(Default)]
+struct ButtonStyle {}
+
+impl button::StyleSheet for ButtonStyle {
+    type Style = Theme;
+
+    fn active(&self, style: &Self::Style) -> button::Appearance {
+        button::Appearance {
+            background: Some(iced::Background::Color(style.palette().primary)),
+            border_radius: 10.0.into(),
+            ..Default::default()
+        }
+    }
+}
+
+#[derive(Default)]
+struct TextInputStyle {}
+
+impl text_input::StyleSheet for TextInputStyle {
+    type Style = Theme;
+
+    fn active(&self, style: &Self::Style) -> text_input::Appearance {
+        text_input::Appearance {
+            background: iced::Background::Color(style.palette().background),
+            border_radius: 10.0.into(),
+            border_width: 2.0,
+            border_color: style.palette().primary,
+            icon_color: style.palette().primary,
+        }
+    }
+
+    fn focused(&self, style: &Self::Style) -> text_input::Appearance {
+        self.active(style)
+    }
+
+    fn placeholder_color(&self, style: &Self::Style) -> iced::Color {
+        style.palette().background
+    }
+
+    fn value_color(&self, style: &Self::Style) -> iced::Color {
+        style.palette().success
+    }
+
+    fn disabled_color(&self, style: &Self::Style) -> iced::Color {
+        style.palette().background
+    }
+
+    fn selection_color(&self, style: &Self::Style) -> iced::Color {
+        style.palette().primary
+    }
+
+    fn disabled(&self, style: &Self::Style) -> text_input::Appearance {
+        text_input::Appearance {
+            background: iced::Background::Color(style.palette().background),
+            border_radius: 10.0.into(),
+            border_width: 2.0,
+            border_color: style.palette().primary,
+            icon_color: style.palette().primary,
+        }
+    }
+}
-- 
cgit v1.2.3-70-g09d2