1 files changed, 169 insertions, 0 deletions

diff --git a/examples/lib-dfscq-log/src/layer.rs b/examples/lib-dfscq-log/src/layer.rs
new file mode 100644
index 0000000..45edb56
--- /dev/null
+++ b/examples/lib-dfscq-log/src/layer.rs
@@ -0,0 +1,169 @@
+use diaphragm_core::{
+    core_shapes::Rectangle,
+    core_shapes::Text,
+    text::FontDescription,
+    types::{Bounds, Float, ShapeContext},
+    ComplexShape, DrawResult, Drawable, DynDrawable, SolverContext,
+};
+
+#[derive(Clone)]
+pub struct Entry {
+    // TODO: transform this to just Text
+    pub label: Option<String>,
+    pub label_vert_center_offset: Option<Float>,
+    pub content: DynDrawable,
+}
+
+#[derive(Clone)]
+pub struct Layer {
+    // TODO: transform this to just Text
+    pub name: String,
+    pub name_font: FontDescription,
+    pub label_font: FontDescription,
+    pub padding: Float,
+    pub entries: Vec<Entry>,
+    pub entries_width: Float,
+}
+
+impl ComplexShape for Layer {
+    fn draw(&self, context: &ShapeContext, solver: &mut dyn SolverContext) -> DrawResult {
+        let mut result = DrawResult::new();
+
+        let bounds_top = context.bounds().top(solver);
+        let bounds_left = context.bounds().left(solver);
+        let bounds_right = context.bounds().right(solver);
+        let bounds_height = context.bounds().height(solver);
+
+        let inner_top = solver.float_add(&[bounds_top, self.padding]);
+        let inner_right = solver.float_sub(&[bounds_right, self.padding]);
+
+        // Outer box
+
+        result.push(Drawable::new(Rectangle {}, context.clone()));
+
+        // Layer name
+
+        let layer_name = Drawable::builder(Text {
+            content: self.name.clone(),
+            font: self.name_font.clone(),
+        })
+        .bounds(
+            Bounds::builder()
+                .top(inner_top)
+                .left(solver.float_add(&[bounds_left, self.padding]))
+                .build(solver),
+        )
+        .stroke(context.stroke().clone())
+        .fill(context.fill().clone())
+        .build(solver);
+
+        let layer_name_bottom = layer_name.bounds().bottom(solver);
+
+        /*
+        let mut rect_context = layer_name_context.clone();
+        rect_context.stroke = StrokeStyle::solid(Color::from_rgb(1., 0., 0.));
+        result.push_shape(Rectangle {}, rect_context);
+        */
+
+        result.push(layer_name);
+
+        // Entries
+
+        let mut entry_y_acc = inner_top;
+
+        for entry in &self.entries {
+            // Entry content
+
+            /*
+            let content_context = ShapeContext {
+                bounds: Bounds {
+                    top: solver.new_free_float(),
+                    left: content_left,
+                    width: entry.width,
+                    height: entry.height,
+                },
+                fill: Default::default(),
+                stroke: Default::default(),
+            };
+            */
+
+            let content_vert_center = entry.content.bounds().vert_center(solver);
+            let content_top = entry.content.bounds().top(solver);
+            let content_left = entry.content.bounds().left(solver);
+            let content_bottom = entry.content.bounds().bottom(solver);
+
+            // TODO: to replace with label offset
+            let content_half_height = solver.float_sub(&[content_vert_center, content_top]);
+
+            result.push_dyn(entry.content.clone());
+
+            // Entry label
+
+            if let Some(label_content) = entry.label.clone() {
+                let label_top = solver.new_free_float();
+                let label_width = solver.new_free_float();
+                let label_left = solver.float_sub(&[inner_right, self.entries_width, label_width]);
+
+                let label = Drawable::builder(Text {
+                    content: label_content,
+                    font: self.label_font.clone(),
+                })
+                .bounds(
+                    Bounds::builder()
+                        .top(label_top)
+                        .left(label_left)
+                        .width(label_width)
+                        .build(solver),
+                )
+                .build(solver);
+
+                /*
+                let mut rect_context = label_context.clone();
+                rect_context.stroke = StrokeStyle::solid(Color::from_rgb(1., 0., 0.));
+                result.push_shape(Rectangle {}, rect_context);
+                */
+
+                // TODO
+                let label_vert_center = label.bounds().vert_center(solver);
+                let label_top = label.bounds().top(solver);
+                let label_right = label.bounds().right(solver);
+
+                let label_vert_center_constraint =
+                    solver.float_eq(label_vert_center, content_vert_center);
+                solver.constrain(label_vert_center_constraint);
+
+                let label_half_height = solver.float_sub(&[label_vert_center, label_top]);
+
+                let dumb_label_mid_placement =
+                    solver.float_add(&[entry_y_acc, content_half_height]);
+                let safe_label_mid_placement =
+                    solver.float_add(&[layer_name_bottom, label_half_height]);
+                let label_mid_placement =
+                    solver.float_max(&[safe_label_mid_placement, dumb_label_mid_placement]);
+                let label_mid_placement_constraint =
+                    solver.float_eq(label_vert_center, label_mid_placement);
+                solver.constrain(label_mid_placement_constraint);
+
+                let label_right_constraint = solver.float_eq(label_right, content_left);
+                solver.constrain(label_right_constraint);
+
+                result.push(label);
+            } else {
+                let content_top_constraint = solver.float_eq(content_top, entry_y_acc);
+                solver.constrain(content_top_constraint);
+
+                let wanted_content_left = solver.float_sub(&[inner_right, self.entries_width]);
+                let content_left_constraint = solver.float_eq(content_left, wanted_content_left);
+                solver.constrain(content_left_constraint);
+            }
+
+            entry_y_acc = solver.float_add(&[content_bottom, self.padding]);
+        }
+
+        let wanted_bounds_height = solver.float_sub(&[entry_y_acc, bounds_top]);
+        let height_constraint = solver.float_eq(bounds_height, wanted_bounds_height);
+        solver.constrain(height_constraint);
+
+        result
+    }
+}