djkato/egui
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add example where you can change layout direction and alignment

Browse source
This commit is contained in:
Emil Ernerfeldt 2020-05-12 23:00:20 +02:00
parent 1dff2ad721
commit 8e0b1c8fca
5 changed files with 226 additions and 110 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
emigui/README.md
View file

@ -87,6 +87,7 @@ Add extremely quick animations for some things, maybe 2-3 frames. For instance:
* [ ] Build in a profiler which tracks which `Ui` in which window takes up CPU.
* [ ] Draw as flame graph
* [ ] Draw as hotmap
* [ ] Change `width.min(max_width)` to `width.at_most(max_width)`
### Names and structure
* [ ] Rename things to be more consistent with Dear ImGui

302
emigui/src/examples/app.rs
View file

@ -85,6 +85,8 @@ impl ExampleApp {
}
}
// ----------------------------------------------------------------------------
#[derive(Deserialize, Serialize)]
struct OpenWindows {
examples: bool,
@ -141,40 +143,22 @@ fn show_menu_bar(ui: &mut Ui, windows: &mut OpenWindows) {
/// Showcase some ui code
#[derive(Deserialize, Serialize)]
pub struct ExampleWindow {
checked: bool,
count: usize,
radio: usize,
text_inputs: [String; 3],
size: Vec2,
corner_radius: f32,
stroke_width: f32,
num_boxes: usize,
num_columns: usize,
slider_value: usize,
widgets: Widgets,
layout: LayoutExample,
box_painting: BoxPainting,
painting: Painting,
}
impl Default for ExampleWindow {
fn default() -> ExampleWindow {
ExampleWindow {
checked: true,
radio: 0,
count: 0,
text_inputs: ["Hello".to_string(), "World".to_string(), "".to_string()],
size: vec2(100.0, 50.0),
corner_radius: 5.0,
stroke_width: 2.0,
num_boxes: 1,
num_columns: 2,
slider_value: 100,
widgets: Default::default(),
layout: Default::default(),
box_painting: Default::default(),
painting: Default::default(),
}
}
@ -196,56 +180,14 @@ impl ExampleWindow {
CollapsingHeader::new("Widgets")
.default_open()
.show(ui, |ui| {
ui.horizontal(|ui| {
ui.add(label!("Text can have").text_color(srgba(110, 255, 110, 255)));
ui.add(label!("color").text_color(srgba(128, 140, 255, 255)));
ui.add(label!("and tooltips (hover me)")).tooltip_text(
"This is a multiline tooltip that demonstrates that you can easily add tooltips to any element.\nThis is the second line.\nThis is the third.",
);
self.widgets.ui(ui);
});
ui.add(Checkbox::new(&mut self.checked, "checkbox"));
CollapsingHeader::new("Layout")
.default_open()
.show(ui, |ui| self.layout.ui(ui));
ui.horizontal(|ui| {
if ui.add(radio(self.radio == 0, "First")).clicked {
self.radio = 0;
}
if ui.add(radio(self.radio == 1, "Second")).clicked {
self.radio = 1;
}
if ui.add(radio(self.radio == 2, "Final")).clicked {
self.radio = 2;
}
});
ui.horizontal(|ui| {
if ui
.add(Button::new("Click me"))
.tooltip_text("This will just increase a counter.")
.clicked
{
self.count += 1;
}
ui.add(label!(
"The button has been clicked {} times",
self.count
));
});
ui.add(Slider::usize(&mut self.slider_value, 1..=1000).text("value"));
if ui.add(Button::new("Double it")).clicked {
self.slider_value *= 2;
}
for (i, text) in self.text_inputs.iter_mut().enumerate() {
ui.horizontal(|ui|{
ui.add(label!("Text input {}: ", i));
ui.add(TextEdit::new(text).id(i));
}); // TODO: .tooltip_text("Enter text to edit me")
}
});
ui.collapsing("Layouts", |ui| {
ui.collapsing("Columns", |ui| {
ui.add(Slider::usize(&mut self.num_columns, 1..=10).text("Columns"));
ui.columns(self.num_columns, |cols| {
for (i, col) in cols.iter_mut().enumerate() {
@ -257,35 +199,7 @@ impl ExampleWindow {
});
});
ui.collapsing("Test box rendering", |ui| {
ui.add(Slider::f32(&mut self.size.x, 0.0..=500.0).text("width"));
ui.add(Slider::f32(&mut self.size.y, 0.0..=500.0).text("height"));
ui.add(Slider::f32(&mut self.corner_radius, 0.0..=50.0).text("corner_radius"));
ui.add(Slider::f32(&mut self.stroke_width, 0.0..=10.0).text("stroke_width"));
ui.add(Slider::usize(&mut self.num_boxes, 0..=5).text("num_boxes"));
let pos = ui
.reserve_space(
vec2(self.size.x * (self.num_boxes as f32), self.size.y),
None,
)
.rect
.min;
let mut cmds = vec![];
for i in 0..self.num_boxes {
cmds.push(PaintCmd::Rect {
corner_radius: self.corner_radius,
fill_color: Some(gray(136, 255)),
rect: Rect::from_min_size(
pos2(10.0 + pos.x + (i as f32) * (self.size.x * 1.1), pos.y),
self.size,
),
outline: Some(Outline::new(self.stroke_width, gray(255, 255))),
});
}
ui.add_paint_cmds(cmds);
});
ui.collapsing("Test box rendering", |ui| self.box_painting.ui(ui));
CollapsingHeader::new("Scroll area")
// .default_open()
@ -340,7 +254,135 @@ impl ExampleWindow {
// ----------------------------------------------------------------------------
#[derive(Deserialize, Serialize)]
#[serde(default)]
struct Widgets {
checked: bool,
count: usize,
radio: usize,
slider_value: usize,
text_inputs: [String; 3],
}
impl Default for Widgets {
fn default() -> Self {
Self {
checked: true,
radio: 0,
count: 0,
slider_value: 100,
text_inputs: ["Hello".to_string(), "World".to_string(), "".to_string()],
}
}
}
impl Widgets {
pub fn ui(&mut self, ui: &mut Ui) {
ui.horizontal(|ui| {
ui.add(label!("Text can have").text_color(srgba(110, 255, 110, 255)));
ui.add(label!("color").text_color(srgba(128, 140, 255, 255)));
ui.add(label!("and tooltips (hover me)")).tooltip_text(
"This is a multiline tooltip that demonstrates that you can easily add tooltips to any element.\nThis is the second line.\nThis is the third.",
);
});
ui.add(Checkbox::new(&mut self.checked, "checkbox"));
ui.horizontal(|ui| {
if ui.add(radio(self.radio == 0, "First")).clicked {
self.radio = 0;
}
if ui.add(radio(self.radio == 1, "Second")).clicked {
self.radio = 1;
}
if ui.add(radio(self.radio == 2, "Final")).clicked {
self.radio = 2;
}
});
ui.horizontal(|ui| {
if ui
.add(Button::new("Click me"))
.tooltip_text("This will just increase a counter.")
.clicked
{
self.count += 1;
}
ui.add(label!("The button has been clicked {} times", self.count));
});
ui.add(Slider::usize(&mut self.slider_value, 1..=1000).text("value"));
if ui.add(Button::new("Double it")).clicked {
self.slider_value *= 2;
}
for (i, text) in self.text_inputs.iter_mut().enumerate() {
ui.horizontal(|ui| {
ui.add(label!("Text input {}: ", i));
ui.add(TextEdit::new(text).id(i));
}); // TODO: .tooltip_text("Enter text to edit me")
}
}
}
// ----------------------------------------------------------------------------
#[derive(Deserialize, Serialize)]
#[serde(default)]
struct BoxPainting {
size: Vec2,
corner_radius: f32,
stroke_width: f32,
num_boxes: usize,
}
impl Default for BoxPainting {
fn default() -> Self {
Self {
size: vec2(100.0, 50.0),
corner_radius: 5.0,
stroke_width: 2.0,
num_boxes: 1,
}
}
}
impl BoxPainting {
pub fn ui(&mut self, ui: &mut Ui) {
ui.add(Slider::f32(&mut self.size.x, 0.0..=500.0).text("width"));
ui.add(Slider::f32(&mut self.size.y, 0.0..=500.0).text("height"));
ui.add(Slider::f32(&mut self.corner_radius, 0.0..=50.0).text("corner_radius"));
ui.add(Slider::f32(&mut self.stroke_width, 0.0..=10.0).text("stroke_width"));
ui.add(Slider::usize(&mut self.num_boxes, 0..=5).text("num_boxes"));
let pos = ui
.reserve_space(
vec2(self.size.x * (self.num_boxes as f32), self.size.y),
None,
)
.rect
.min;
let mut cmds = vec![];
for i in 0..self.num_boxes {
cmds.push(PaintCmd::Rect {
corner_radius: self.corner_radius,
fill_color: Some(gray(136, 255)),
rect: Rect::from_min_size(
pos2(10.0 + pos.x + (i as f32) * (self.size.x * 1.1), pos.y),
self.size,
),
outline: Some(Outline::new(self.stroke_width, gray(255, 255))),
});
}
ui.add_paint_cmds(cmds);
}
}
// ----------------------------------------------------------------------------
#[derive(Default, Deserialize, Serialize)]
#[serde(default)]
struct Painting {
lines: Vec<Vec<Vec2>>,
}
@ -397,6 +439,66 @@ impl Painting {
// ----------------------------------------------------------------------------
use crate::layout::*;
#[derive(Deserialize, Serialize)]
#[serde(default)]
struct LayoutExample {
dir: Direction,
align: Align,
}
impl Default for LayoutExample {
fn default() -> Self {
Self {
dir: Direction::Vertical,
align: Align::Min,
}
}
}
impl LayoutExample {
pub fn ui(&mut self, ui: &mut Ui) {
ui.set_direction(self.dir);
ui.set_align(self.align);
ui.add(label!("Available space: {:?}", ui.available().size()));
if ui.add(Button::new("Reset")).clicked {
*self = Default::default();
}
ui.add(Separator::new());
ui.add(label!("Direction:"));
// TODO: enum iter
for &dir in &[Direction::Horizontal, Direction::Vertical] {
if ui
.add(RadioButton::new(self.dir == dir, format!("{:?}", dir)))
.clicked
{
self.dir = dir;
}
}
ui.add(Separator::new());
ui.add(label!("Align:"));
for &align in &[Align::Min, Align::Center, Align::Max, Align::Justified] {
if ui
.add(RadioButton::new(
self.align == align,
format!("{:?}", align),
))
.clicked
{
self.align = align;
}
}
}
}
// ----------------------------------------------------------------------------
const LOREM_IPSUM: &str = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Curabitur pretium tincidunt lacus. Nulla gravida orci a odio. Nullam varius, turpis et commodo pharetra, est eros bibendum elit, nec luctus magna felis sollicitudin mauris. Integer in mauris eu nibh euismod gravida. Duis ac tellus et risus vulputate vehicula. Donec lobortis risus a elit. Etiam tempor. Ut ullamcorper, ligula eu tempor congue, eros est euismod turpis, id tincidunt sapien risus a quam. Maecenas fermentum consequat mi. Donec fermentum. Pellentesque malesuada nulla a mi. Duis sapien sem, aliquet nec, commodo eget, consequat quis, neque. Aliquam faucibus, elit ut dictum aliquet, felis nisl adipiscing sapien, sed malesuada diam lacus eget erat. Cras mollis scelerisque nunc. Nullam arcu. Aliquam consequat. Curabitur augue lorem, dapibus quis, laoreet et, pretium ac, nisi. Aenean magna nisl, mollis quis, molestie eu, feugiat in, orci. In hac habitasse platea dictumst.";

8
emigui/src/layout.rs
View file

@ -1,5 +1,7 @@
use std::sync::Arc;
use serde_derive::{Deserialize, Serialize};
use crate::{widgets::*, *};
// ----------------------------------------------------------------------------
@ -41,7 +43,8 @@ impl GuiResponse {
// ----------------------------------------------------------------------------
#[derive(Clone, Copy, Debug, PartialEq)]
#[derive(Clone, Copy, Debug, PartialEq, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum Direction {
Horizontal,
Vertical,
@ -53,7 +56,8 @@ impl Default for Direction {
}
}
#[derive(Clone, Copy, Debug, PartialEq)]
#[derive(Clone, Copy, Debug, PartialEq, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum Align {
/// Left/Top
Min,

24
emigui/src/ui.rs
View file

@ -253,6 +253,11 @@ impl Ui {
self.dir
}
// TODO: remove
pub fn set_direction(&mut self, dir: Direction) {
self.dir = dir;
}
// TODO: remove
pub fn set_align(&mut self, align: Align) {
self.align = align;
@ -380,16 +385,19 @@ impl Ui {
/// Reserve this much space and move the cursor.
/// Returns where to put the widget.
fn reserve_space_impl(&mut self, mut child_size: Vec2) -> Rect {
let available_size = self.available_finite().size();
let available_size = available_size.max(child_size);
let mut child_pos = self.cursor;
if self.dir == Direction::Horizontal {
child_pos.y += match self.align {
Align::Min | Align::Justified => 0.0,
Align::Center => 0.5 * (self.available().height() - child_size.y),
Align::Max => self.available().height() - child_size.y,
Align::Center => 0.5 * (available_size.y - child_size.y),
Align::Max => available_size.y - child_size.y,
};
if self.align == Align::Justified && self.available().height().is_finite() {
if self.align == Align::Justified && available_size.y.is_finite() {
// Fill full height
child_size.y = child_size.y.max(self.available().height());
child_size.y = child_size.y.max(available_size.y);
}
self.child_bounds.extend_with(self.cursor + child_size);
self.cursor.x += child_size.x;
@ -397,12 +405,12 @@ impl Ui {
} else {
child_pos.x += match self.align {
Align::Min | Align::Justified => 0.0,
Align::Center => 0.5 * (self.available().width() - child_size.x),
Align::Max => self.available().width() - child_size.x,
Align::Center => 0.5 * (available_size.x - child_size.x),
Align::Max => available_size.x - child_size.x,
};
if self.align == Align::Justified && self.available().width().is_finite() {
if self.align == Align::Justified && available_size.x.is_finite() {
// Fill full width
child_size.x = child_size.x.max(self.available().width());
child_size.x = child_size.x.max(available_size.x);
}
self.child_bounds.extend_with(self.cursor + child_size);
self.cursor.y += child_size.y;

1
emigui/src/widgets.rs
View file

@ -50,6 +50,7 @@ impl Label {
/// If true, will word wrap to `ui.available_finite().width()`.
/// If false (default), will word wrap to `ui.available().width()`.
/// This only makes a difference for auto-sized parents.
pub fn auto_shrink(mut self) -> Self {
self.auto_shrink = true;
self