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stiletto
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Code Issues 27 Pull Requests 3 Releases Wiki Activity

Mirror mirror of the wall, how the fuck do lens work?

This commit is contained in:
Enrico Lumetti 2020-11-21 12:31:29 +01:00
parent 993081419d
commit 9369c3113d
2 changed files with 62 additions and 18 deletions
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6
Cargo.lock generated
View File

@ -257,7 +257,7 @@ checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
[[package]]
name = "druid"
version = "0.6.0"
source = "git+https://github.com/doppioandante/druid?branch=stylus_events_0.6.0#b0f9dc0268409a56b5066f569ad245e5df016166"
source = "git+https://github.com/doppioandante/druid?branch=v0.6.0_stiletto#f8f8a566b77795cfa10caf7f2861f9240d159e90"
dependencies = [
"console_log",
"druid-derive",
@ -278,7 +278,7 @@ dependencies = [
[[package]]
name = "druid-derive"
version = "0.3.1"
source = "git+https://github.com/doppioandante/druid?branch=stylus_events_0.6.0#b0f9dc0268409a56b5066f569ad245e5df016166"
source = "git+https://github.com/doppioandante/druid?branch=v0.6.0_stiletto#f8f8a566b77795cfa10caf7f2861f9240d159e90"
dependencies = [
"proc-macro2",
"quote",
@ -288,7 +288,7 @@ dependencies = [
[[package]]
name = "druid-shell"
version = "0.6.0"
source = "git+https://github.com/doppioandante/druid?branch=stylus_events_0.6.0#b0f9dc0268409a56b5066f569ad245e5df016166"
source = "git+https://github.com/doppioandante/druid?branch=v0.6.0_stiletto#f8f8a566b77795cfa10caf7f2861f9240d159e90"
dependencies = [
"anyhow",
"bitflags",

74
src/bin/canvas_tool_list.rs
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@ -18,17 +18,68 @@
use druid::im::{vector, Vector};
use druid::widget::prelude::*;
use druid::{AppLauncher, Color, Data, LocalizedString, WindowDesc, Lens};
use druid::widget::{Align, Label, Button, CrossAxisAlignment, Flex, List, ListGrowDirection, WidgetExt, SizedBox};
use druid::{AppLauncher, Color, Data, LocalizedString, WindowDesc, Lens, UnitPoint};
#[derive(Clone, Data)]
enum CanvasToolState {
Pen { thickness: f64 },
Eraser,
}
trait CanvasToolBuilder {
fn default_state() -> CanvasToolState;
fn build_widget(&self) -> Box<dyn Widget<CanvasToolState>>;
}
struct PenBuilder;
struct EraserBuilder;
impl CanvasToolBuilder for PenBuilder {
fn default_state() -> CanvasToolState {
CanvasToolState::Pen {
thickness: 2.0
}
}
fn build_widget(&self) -> Box<dyn Widget<CanvasToolState>> {
Box::new(SizedBox::new(
Label::new(|item: &CanvasToolState, _env: &_| format!("pen"))
.align_horizontal(UnitPoint::CENTER)
.background(Color::rgb(19.0, 0.5, 0.5))
.fix_width(100.0)
.fix_height(100.0)
)
.padding((10.0, 0.0)))
}
}
impl CanvasToolBuilder for EraserBuilder {
fn default_state() -> CanvasToolState {
CanvasToolState::Eraser {}
}
fn build_widget(&self) -> Box<dyn Widget<CanvasToolState>> {
Box::new(SizedBox::new(
Label::new(|item: &CanvasToolState, _env: &_| format!("eraser"))
.align_horizontal(UnitPoint::CENTER)
.background(Color::rgb(0.5, 0.5, 0.5))
.fix_width(100.0)
.fix_height(100.0)
)
.padding((10.0, 0.0)))
}
}
enum CanvasTool {
Pen(PenBuilder),
Eraser(EraserBuilder)
}
#[derive(Clone, Data, Lens)]
struct AppState {
numbers: Vector<u32>,
tools: Vector<CanvasToolState>,
}
fn build_ui() -> impl Widget<AppState> {
use druid::UnitPoint;
use druid::widget::{Align, Label, Button, CrossAxisAlignment, Flex, List, ListGrowDirection, WidgetExt, SizedBox};
let list_buttons = Flex::row()
.cross_axis_alignment(CrossAxisAlignment::Center)
.with_child(Button::new("Add"))
@ -38,17 +89,10 @@ fn build_ui() -> impl Widget<AppState> {
.cross_axis_alignment(CrossAxisAlignment::Center)
.with_flex_child(
List::new(|| {
SizedBox::new(
Label::new(|item: &u32, _env: &_| format!("{}", item))
.align_horizontal(UnitPoint::CENTER)
.background(Color::rgb(0.5, 0.5, 0.5))
.fix_width(100.0)
.fix_height(100.0)
)
.padding((10.0, 0.0))
//CanvasToolBuilder::build_widget ???
})
.grow(ListGrowDirection::Right)
.lens(AppState::numbers)
.lens(AppState::tools)
, 1.0);
let toolbar = Flex::row()
@ -75,7 +119,7 @@ pub fn main() {
LocalizedString::new("custom-widget-demo-window-title").with_placeholder("Tools"),
);
let app_state = AppState {
numbers: vector![1,2],
tools: vector![CanvasToolState::Eraser],
};
AppLauncher::with_window(window)