frontend: the advoware GUI

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>
2020-06-12 16:39:45 +02:00
parent 3837183199
commit 51b73d0978
68 changed files with 3499 additions and 0 deletions
--- a/frontend/examples/progress_bar.rs
+++ b/frontend/examples/progress_bar.rs
@@ -0,0 +1,120 @@
+use orbtk::prelude::*;
+
+#[derive(Copy, Clone)]
+enum ProgressEvent {
+    Advance(f64),
+    Reset,
+    SetToFull,
+}
+
+#[derive(Default, AsAny)]
+struct MainViewState {
+    action: Option<ProgressEvent>,
+}
+
+widget!(MainView<MainViewState>);
+
+impl MainViewState {
+    fn action(&mut self, action: impl Into<Option<ProgressEvent>>) {
+        self.action = action.into();
+    }
+}
+
+impl State for MainViewState {
+    fn update(&mut self, _: &mut Registry, ctx: &mut Context<'_>) {
+        if let Some(action) = self.action {
+            match action {
+                ProgressEvent::Advance(amount) => {
+                    let old_width = ctx.child("pgbar").clone_or_default::<f64>("val");
+                    let new_width = old_width + amount;
+                    // Set the ProgressBar's val property to the calculated percentage
+                    // (whereas 0.0 means 0 %, and 1.0 means 100 %) to advance the progress
+                    ctx.child("pgbar").set::<f64>("val", new_width);
+                }
+                ProgressEvent::Reset => {
+                    ctx.child("pgbar").set::<f64>("val", 0.0);
+                }
+                ProgressEvent::SetToFull => {
+                    ctx.child("pgbar").set::<f64>("val", 1.0);
+                }
+            }
+            self.action = None;
+        }
+    }
+}
+
+impl Template for MainView {
+    fn template(self, id: Entity, ctx: &mut BuildContext) -> Self {
+        self.child(
+            Stack::create()
+                .horizontal_alignment("center")
+                .margin((16.0, 16.0, 16.0, 16.0))
+                .spacing(8.0)
+                .child(
+                    ProgressBar::create()
+                        .id("pgbar")
+                        .val(0.0)
+                        .width(512.0)
+                        .build(ctx),
+                )
+                .child(
+                    Stack::create()
+                        .horizontal_alignment("center")
+                        .spacing(8.0)
+                        .child(
+                            Button::create()
+                                .text("Progress by 25%")
+                                .width(256.0)
+                                .on_click(move |states, _| -> bool {
+                                    states
+                                        .get_mut::<MainViewState>(id)
+                                        .action(ProgressEvent::Advance(0.25));
+                                    true
+                                })
+                                .build(ctx),
+                        )
+                        .child(
+                            Button::create()
+                                .text("Reset")
+                                .width(256.0)
+                                .on_click(move |states, _| -> bool {
+                                    states
+                                        .get_mut::<MainViewState>(id)
+                                        .action(ProgressEvent::Reset);
+                                    true
+                                })
+                                .build(ctx),
+                        )
+                        .child(
+                            Button::create()
+                                .text("Set to 100%")
+                                .width(256.0)
+                                .on_click(move |states, _| -> bool {
+                                    states
+                                        .get_mut::<MainViewState>(id)
+                                        .action(ProgressEvent::SetToFull);
+                                    true
+                                })
+                                .build(ctx),
+                        )
+                        .build(ctx),
+                )
+                .build(ctx),
+        )
+    }
+}
+
+fn main() {
+    Application::new()
+        .window(|ctx| {
+            Window::create()
+                .title("OrbTk - ProgressBar example")
+                .position((0.0, 0.0))
+                .size(720.0, 576.0)
+                .borderless(false)
+                .resizeable(true)
+                .child(MainView::create().build(ctx))
+                .build(ctx)
+        })
+        .run();
+}