clay tree

prosperon/clay.cm

@@ -9,6 +9,9 @@ var util = use('util')
 var input = use('input')
 var prosperon = use('prosperon')
 
+var CHILDREN = Symbol('children')
+var PARENT = Symbol('parent')
+
 function normalizeSpacing(spacing) {
   if (typeof spacing == 'number') {
     return {l: spacing, r: spacing, t: spacing, b: spacing}
@@ -47,8 +50,11 @@ var clay_base = {
 
 var root_item;
 var root_config;
-var boxes = [];
+var tree_root;
 var clay = {}
+clay.CHILDREN = CHILDREN
+clay.PARENT = PARENT
+
 var focused_textbox = null
 
 clay.behave = layout.behave;
@@ -58,7 +64,6 @@ clay.draw = function draw(fn)
 { 
   var size = [prosperon.camera.width, prosperon.camera.height]
   lay_ctx.reset();
-  boxes = [];
   var root = lay_ctx.item();
   // Accept both array and object formats
   if (Array.isArray(size)) {
@@ -68,42 +73,51 @@ clay.draw = function draw(fn)
   lay_ctx.set_contain(root,layout.contain.row);
   root_item = root;
   root_config = Object.assign({}, clay_base);
-  boxes.push({
+  tree_root = {
     id: root,
     config: root_config,
-    parent: null,
-  });
+  };
+  tree_root[CHILDREN] = [];
+  tree_root[PARENT] = null;
   fn()
   lay_ctx.run();
 
-  // Adjust bounding boxes for padding
-  for (var i = 0; i < boxes.length; i++) {
-    var box = boxes[i];
-    box.content = lay_ctx.get_rect(box.id);
-    box.boundingbox = Object.assign({}, box.content);
+  // Adjust bounding boxes for padding - traverse tree instead of array
+  function adjust_bounding_boxes(node) {
+    node.content = lay_ctx.get_rect(node.id);
+    node.boundingbox = Object.assign({}, node.content);
 
-    var padding = normalizeSpacing(box.config.padding || 0);
+    var padding = normalizeSpacing(node.config.padding || 0);
     
-    box.boundingbox.x -= padding.l;
-    box.boundingbox.y -= padding.t;
-    box.boundingbox.width += padding.l + padding.r;
-    box.boundingbox.height += padding.t + padding.b;
+    node.boundingbox.x -= padding.l;
+    node.boundingbox.y -= padding.t;
+    node.boundingbox.width += padding.l + padding.r;
+    node.boundingbox.height += padding.t + padding.b;
 
-    box.marginbox = Object.assign({}, box.content);
-    var margin = normalizeSpacing(box.config.margin || 0);
-    box.marginbox.x -= margin.l;
-    box.marginbox.y -= margin.t;
-    box.marginbox.width += margin.l+margin.r;
-    box.marginbox.height += margin.t+margin.b;
-    box.content.y *= -1;
-    box.content.y += size.height;
-    box.boundingbox.y *= -1;
-    box.boundingbox.y += size.height;
-    box.content.anchor_y = 1;
-    box.boundingbox.anchor_y = 1;
+    node.marginbox = Object.assign({}, node.content);
+    var margin = normalizeSpacing(node.config.margin || 0);
+    node.marginbox.x -= margin.l;
+    node.marginbox.y -= margin.t;
+    node.marginbox.width += margin.l+margin.r;
+    node.marginbox.height += margin.t+margin.b;
+    node.content.y *= -1;
+    node.content.y += size.height;
+    node.boundingbox.y *= -1;
+    node.boundingbox.y += size.height;
+    node.content.anchor_y = 1;
+    node.boundingbox.anchor_y = 1;
+
+    // Recursively adjust children
+    if (node[CHILDREN]) {
+      for (var child of node[CHILDREN]) {
+        adjust_bounding_boxes(child);
+      }
+    }
   }
 
-  return boxes;
+  adjust_bounding_boxes(tree_root);
+
+  return tree_root;
 }
 
 function create_view_fn(base_config)
@@ -115,12 +129,21 @@ function create_view_fn(base_config)
 
     var prev_item = root_item;
     var prev_config = root_config;
+    var prev_tree_root = tree_root;
     root_item = item;
     root_config = config;
     root_config._childIndex = 0; // Initialize child index
+    // Find the tree node for this item and set it as current tree_root
+    if (prev_tree_root[CHILDREN] && prev_tree_root[CHILDREN].length > 0) {
+      tree_root = prev_tree_root[CHILDREN][prev_tree_root[CHILDREN].length - 1];
+    } else {
+      // If no children yet, this shouldn't happen, but handle gracefully
+      tree_root = prev_tree_root;
+    }
     fn?.();
     root_item = prev_item;
     root_config = prev_config;
+    tree_root = prev_tree_root;
   }
 }
 
@@ -183,11 +206,13 @@ function add_item(config)
   lay_ctx.set_size(item,use_config.size);
   lay_ctx.set_contain(item,use_config.contain);
   lay_ctx.set_behave(item,use_config.behave);
-  boxes.push({
+  var tree_node = {
     id: item,
     config: use_config,
-    parent: root_item,
-  });
+  };
+  tree_node[CHILDREN] = [];
+  tree_node[PARENT] = tree_root;
+  tree_root[CHILDREN].push(tree_node);
   lay_ctx.insert(root_item,item);
 
   // Increment the parent's child index
@@ -226,7 +251,6 @@ clay.text = function text(str, ...configs)
   var tsize = config.font.text_size(str, 0, config.size.x, config.text_break, config.text_align);
   tsize.x = Math.ceil(tsize.x)
   tsize.y = Math.ceil(tsize.y)
-  log.console(json.encode(tsize))
   config.size = config.size.map((x,i) => Math.max(x, tsize[i]));
   config.text = str;
   add_item(config);
@@ -268,15 +292,15 @@ clay.textbox = function(str, on_change, ...configs) {
 
 var point = use('point')
 
-clay.draw_commands = function draw_commands(cmds, pos = {x:0,y:0})
+clay.draw_commands = function draw_commands(tree_root, pos = {x:0,y:0})
 {
-  for (var cmd of cmds) {
-    var config = cmd.config  
-    var boundingbox = geometry.rect_move(cmd.boundingbox,point.add(pos,config.offset))
-    var content = geometry.rect_move(cmd.content,point.add(pos, config.offset))
+  function draw_node(node) {
+    var config = node.config  
+    var boundingbox = geometry.rect_move(node.boundingbox,point.add(pos,config.offset))
+    var content = geometry.rect_move(node.content,point.add(pos, config.offset))
     
     // Check if this box should use hover styling
-    if (cmd.state && cmd.state.hovered && config.hovered) {
+    if (node.state && node.state.hovered && config.hovered) {
       config.hovered.__proto__ = config
       config = config.hovered
     }
@@ -294,23 +318,73 @@ clay.draw_commands = function draw_commands(cmds, pos = {x:0,y:0})
       
     if (config.image)
       draw.image(config.image, content, 0, config.color)
+
+    // Recursively draw children
+    if (node[CHILDREN]) {
+      for (var child of node[CHILDREN]) {
+        draw_node(child);
       }
     }
+  }
+
+  draw_node(tree_root);
+}
 
 var dbg_colors = {};
 clay.debug_colors = dbg_colors;
 dbg_colors.content = [1,0,0,0.1];
 dbg_colors.boundingbox = [0,1,0,0,0.1];
 dbg_colors.margin = [0,0,1,0.1];
-clay.draw_debug = function draw_debug(cmds, pos = {x:0, y:0})
+clay.draw_debug = function draw_debug(tree_root, pos = {x:0, y:0})
 {
-  for (var i = 0; i < cmds.length; i++) {
-    var cmd = cmds[i];
-    var boundingbox = geometry.rect_move(cmd.boundingbox,pos);
-    var content = geometry.rect_move(cmd.content,pos);
+  function draw_debug_node(node) {
+    var boundingbox = geometry.rect_move(node.boundingbox,pos);
+    var content = geometry.rect_move(node.content,pos);
     draw.rectangle(content, dbg_colors.content);
     draw.rectangle(boundingbox, dbg_colors.boundingbox);
-//    draw.rectangle(geometry.rect_move(cmd.marginbox,pos), dbg_colors.margin);
+    //    draw.rectangle(geometry.rect_move(node.marginbox,pos), dbg_colors.margin);
+
+    // Recursively draw debug for children
+    if (node[CHILDREN]) {
+      for (var child of node[CHILDREN]) {
+        draw_debug_node(child);
+      }
+    }
+  }
+
+  draw_debug_node(tree_root);
+}
+
+clay.print_tree = function print_tree(tree_root, indent = 0) {
+  log.console(json.encode(tree_root[clay.CHILDREN]))
+  var indent_str = '  '.repeat(indent)
+  var node_type = 'unknown'
+  
+  if (tree_root.config.text) {
+    node_type = 'text'
+  } else if (tree_root.config.image) {
+    node_type = 'image'
+  } else if (tree_root.config.contain) {
+    if (tree_root.config.contain & layout.contain.column) {
+      node_type = 'vstack'
+    } else if (tree_root.config.contain & layout.contain.row) {
+      node_type = 'hstack'
+    } else {
+      node_type = 'container'
+    }
+  } else {
+    node_type = 'node'
+  }
+  
+  log.console(`${indent_str}${node_type} (id: ${tree_root.id})`)
+  
+  if (tree_root[CHILDREN] && tree_root[CHILDREN].length > 0) {
+    log.console(`${indent_str}  children: ${tree_root[CHILDREN].length}`)
+    for (var child of tree_root[CHILDREN]) {
+      print_tree(child, indent + 1)
+    }
+  } else {
+    log.console(`${indent_str}  (no children)`)
   }
 }
 

prosperon/clay_input.cm

@@ -3,61 +3,145 @@
 
 var geometry = use('geometry')
 var point = use('point')
+var clay = use('prosperon/clay')
 
 var clay_input = {}
 
-// Hit-test boxes against a mouse position
-// boxes: array of box objects from clay.draw()
-// pos: {x, y} position to test
-// prev_state: previous input state for tracking changes
-clay_input.hit = function hit(boxes, pos, prev_state = {}) {
-  var hovered = null
-  var clicked = null
+function rect_contains(node, pos) {
+  var bb = geometry.rect_move(node.boundingbox, node.config.offset || {x: 0, y: 0})
+  return geometry.rect_point_inside(bb, pos)
+}
 
-  // Find the topmost hovered box (iterate in reverse for proper z-order)
-  for (var i = boxes.length - 1; i >= 0; i--) {
-    var box = boxes[i]
-    var boundingbox = geometry.rect_move(box.boundingbox, box.config.offset)
-    if (geometry.rect_point_inside(boundingbox, pos)) {
-      hovered = box
-      break
+function pointer_enabled(node) {
+  var p = node.config.pointer_events
+  if (!p || p == 'auto') return true
+  if (p == 'none') return false
+  return true
+}
+
+function should_skip_children(node) {
+  var p = node.config.pointer_events
+  if (p == 'box-only') return true
+  return false
+}
+
+function should_skip_self(node) {
+  var p = node.config.pointer_events
+  if (p == 'box-none') return true
+  return false
+}
+
+clay_input.hit = function hit(tree_root, pos, prev_state = {}) {
+  function find_path(node, path) {
+    if (!pointer_enabled(node)) return null
+    if (!rect_contains(node, pos)) return null
+
+    var next_path = path.concat(node)
+
+    if (node[clay.CHILDREN] && !should_skip_children(node)) {
+      // Children drawn later should be tested first; reverse if your render order differs
+      for (var i = node[clay.CHILDREN].length - 1; i >= 0; i--) {
+        var child = node[clay.CHILDREN][i]
+        var child_path = find_path(child, next_path)
+        if (child_path) return child_path
       }
     }
 
-  // Update hover state
-  if (hovered && hovered.config.hovered) {
-    hovered.state = hovered.state || {}
-    hovered.state.hovered = true
+    if (should_skip_self(node)) return null
+    return next_path
   }
 
-  // Clear previous hover state if different
-  if (prev_state.hovered && prev_state.hovered != hovered) {
-    prev_state.hovered.state = prev_state.hovered.state || {}
-    prev_state.hovered.state.hovered = false
-  }
+  var path = find_path(tree_root, []) || []
+  var deepest = path.length ? path[path.length - 1] : null
 
-  return {
-    hovered: hovered,
-    clicked: clicked
+  function nearest_actionable(path) {
+    for (var i = path.length - 1; i >= 0; i--) {
+      var n = path[i]
+      if (n && n.config && typeof n.config.action == 'function') return n
     }
-}
-
-// Handle click events
-clay_input.click = function click(boxes, mousepos, button = 'left') {
-  var hit_result = clay_input.hit(boxes, mousepos)
-  var clicked = hit_result.hovered
-  
-  if (clicked && clicked.config.action) {
-    clicked.config.action()
-    return clicked
-  }
-  
     return null
   }
 
-// Get boxes with actions for navigation
-clay_input.get_actionable = function get_actionable(boxes) {
-  return boxes.filter(box => box.config.action)
+  var action_target = nearest_actionable(path)
+
+  // Hover bookkeeping: let child hover, and optionally parent hover via hover_includes_children
+  var new_hover_chain = []
+  if (deepest) {
+    if (deepest.config && deepest.config.hovered) {
+      deepest.state = deepest.state || {}
+      deepest.state.hovered = true
+      new_hover_chain.push(deepest)
+    }
+
+    for (var i = path.length - 2; i >= 0; i--) {
+      var anc = path[i]
+      if (anc.config && anc.config.hovered) {
+        anc.state = anc.state || {}
+        anc.state.hovered = true
+        new_hover_chain.push(anc)
+      }
+    }
+  }
+
+  // Clear previous hovers not in the new chain
+  if (prev_state.hover_chain) {
+    for (var i = 0; i < prev_state.hover_chain.length; i++) {
+      var n = prev_state.hover_chain[i]
+      if (new_hover_chain.indexOf(n) == -1) {
+        n.state = n.state || {}
+        n.state.hovered = false
+      }
+    }
+  }
+
+  return {
+    path: path,
+    deepest: deepest,
+    action_target: action_target,
+    hover_chain: new_hover_chain
+  }
+}
+
+clay_input.click = function click(tree_root, mousepos, button = 'left') {
+  var hit_result = clay_input.hit(tree_root, mousepos, {})
+  var target = hit_result.action_target
+  if (target && target.config.action) target.config.action()
+  return target || null
+}
+
+clay_input.get_actionable = function get_actionable(tree_root) {
+  var actionable = []
+  function walk(node) {
+    if (node.config.action) actionable.push(node)
+    if (node[clay.CHILDREN])
+      for (var child of node[clay.CHILDREN]) walk(child)
+  }
+  walk(tree_root)
+  return actionable
+}
+
+clay_input.find_by_id = function find_by_id(tree_root, id) {
+  function rec(node) {
+    if (node.id == id) return node
+    if (node[clay.CHILDREN])
+      for (var child of node[clay.CHILDREN]) {
+        var f = rec(child)
+        if (f) return f
+      }
+    return null
+  }
+  return rec(tree_root)
+}
+
+clay_input.filter = function filter(tree_root, predicate) {
+  var results = []
+  function rec(node) {
+    if (predicate(node)) results.push(node)
+    if (node[clay.CHILDREN])
+      for (var child of node[clay.CHILDREN]) rec(child)
+  }
+  rec(tree_root)
+  return results
 }
 
 return clay_input