reorg: message-list -> transcript

2025-05-03 22:47:56 -07:00
parent d3dfffd652
commit dd91746310
11 changed files with 46 additions and 35 deletions
--- a/src/transcript/transcript-drawing-area.vala
+++ b/src/transcript/transcript-drawing-area.vala
@@ -0,0 +1,112 @@
+using Gtk;
+using Gee;
+
+private class TranscriptDrawingArea : Widget 
+{
+    private SortedSet<Message> _messages = new TreeSet<Message>();
+    private ArrayList<ChatItemLayout> _chat_items = new ArrayList<ChatItemLayout>();
+
+    private const float bubble_padding = 10.0f;
+    private const float bubble_margin = 18.0f;
+
+    public TranscriptDrawingArea() {
+        add_css_class("transcript-drawing-area");
+    }
+
+    public void set_messages(SortedSet<Message> messages) {
+        _messages = messages;
+        recompute_message_layouts();
+    }
+
+    public override SizeRequestMode get_request_mode() {
+        return SizeRequestMode.HEIGHT_FOR_WIDTH;
+    }
+    
+    public override void measure(Orientation orientation, int for_size, out int minimum, out int natural, out int minimum_baseline, out int natural_baseline) 
+    {
+        if (orientation == Orientation.HORIZONTAL) {
+            // Horizontal, so we take up the full width provided
+            minimum = 0;
+            natural = for_size;
+        } else {
+            // compute total message layout height 
+            float total_height = 0.0f;
+            _chat_items.foreach((chat_item) => {
+                total_height += chat_item.get_height() + bubble_padding;
+                return true;
+            });
+
+            minimum = (int)total_height;
+            natural = (int)total_height;
+        }
+        
+        minimum_baseline = -1;
+        natural_baseline = -1;
+    }
+
+    public override void size_allocate(int width, int height, int baseline) {
+        base.size_allocate(width, height, baseline);
+        recompute_message_layouts();
+    }
+    
+    public override void snapshot(Snapshot snapshot) {
+        var container_width = get_width();
+        float y_offset = 0;
+        _chat_items.foreach((chat_item) => {
+            var item_width = chat_item.get_width();
+            var item_height = chat_item.get_height();
+
+            snapshot.save();
+            
+            // Flip the y-axis, since our parent is upside down (so newest messages are at the bottom)
+            snapshot.scale(1.0f, -1.0f);
+
+            // Translate to the correct position
+            snapshot.translate(Graphene.Point() { 
+                x = (chat_item.from_me ? (container_width - item_width - bubble_margin) : bubble_margin), 
+                y = y_offset 
+            });
+
+            // Undo the y-axis flip, origin is top left 
+            snapshot.translate(Graphene.Point() { x = 0, y = -item_height });
+
+            chat_item.draw(snapshot);
+            snapshot.restore();
+
+            y_offset -= item_height + bubble_padding;
+
+            return true;
+        });
+    }
+
+    private void recompute_message_layouts() {
+        var container_width = get_width();
+        float max_width = container_width * 0.90f;
+        
+        _chat_items.clear();
+
+        var reversed_messages = _messages
+            .order_by((a, b) => b.date.compare(a.date)); // reverse order
+        
+        DateTime? last_date = null;
+        reversed_messages.foreach((message) => {
+            // Remember everything in here is backwards.
+
+            if (last_date == null) {
+                last_date = message.date;
+            } else if (last_date.difference(message.date) > (TimeSpan.MINUTE * 25)) {
+                var date_item = new DateItemLayout(last_date.to_local().format("%b %d, %Y at %H:%M"), this, max_width);
+                _chat_items.add(date_item);
+                last_date = message.date;
+            }
+
+            var text_bubble = new TextBubbleLayout(message, this, max_width);
+            _chat_items.add(text_bubble);
+
+            return true;
+        });
+        
+        queue_draw();
+        queue_resize();
+    }
+}