Revise Source detail page to improve line-wrap issues.

docs/ui/pages/sources.md

@@ -34,7 +34,9 @@ The list accepts optional `document_id` and `job_id` query parameters. Document
 - **Delete Source** opens the guarded delete route.
 - Previous and Next navigate only among Sources belonging to the same Document in page order; unavailable boundary actions are disabled.
 - The media viewer resolves the stored Source path through the configured upload root.
-- The top layout is three columns: Source image, Editable Revision, and Source/SourceJob metadata.
+- The top layout is adaptive:
+  - Standard pages use three columns with a wider Editable Revision column than the image column.
+  - Wide+narrow landscape images switch to a stacked left layout (image above Editable Revision) with metadata on the right.
 - Editable Revision is seeded from an existing revision or the preferred machine transcription.
 - Source Metadata shows upload name, stored filename, page number, Document Name, Document ID, and stored path. Source ID appears in the page-header subtitle.
 - SourceJob Metadata shows latest status, Job ID, execution time, provider, model, prompt, and failure detail.

src/transcription/ui/pages/sources_page.py

@@ -4,10 +4,14 @@ from __future__ import annotations
 
 import base64
 import json
+import logging
+from pathlib import Path
 from uuid import UUID
 
 from fastapi import Request
 from nicegui import ui
+from PIL import Image
+from PIL import UnidentifiedImageError
 
 from transcription.config import Settings
 from transcription.db.models import ExecutionAttempt
@@ -18,6 +22,7 @@ from transcription.services.errors import SourceDeleteBlockedError
 from transcription.services.errors import TranscriptionNotFoundError
 from transcription.services.evidence import EvidenceService
 from transcription.services.evidence import LatestExecutionAttempt
+from transcription.services.source_media import lookup_source_mime_type
 from transcription.services.sources import SourceService
 from transcription.ui.components.app_shell import render_navigation_header
 from transcription.ui.components.cards import archival_card
@@ -43,6 +48,10 @@ from transcription.ui.theme import page_header
 
 from ...db.session import SessionFactoryDep
 
+logger = logging.getLogger(__name__)
+
+_WIDE_NARROW_ASPECT_RATIO_THRESHOLD = 2.2
+
 
 def register_page() -> None:  # noqa: PLR0915
     """Register sources list, detail, and deletion routes."""
@@ -120,6 +129,7 @@ def register_page() -> None:  # noqa: PLR0915
         sources_service = SourceService(session_factory=session_factory)
         evidence_service = EvidenceService(session_factory=session_factory)
         render_navigation_header(current_path="/sources")
+        settings = resolve_runtime_settings(request)
 
         parsed_source_id = parsed_record_id(source_id, noun="Source")
         if parsed_source_id is None:
@@ -143,6 +153,7 @@ def register_page() -> None:  # noqa: PLR0915
             return
 
         original_transcription = _resolve_original_transcription(source=source, latest_attempt=latest_attempt)
+        layout_mode = _resolve_source_detail_layout(source=source, settings=settings)
 
         with ui.column().classes("w-full max-w-[1800px] mx-auto p-4 gap-4"):
             with section_header_row():
@@ -176,23 +187,27 @@ def register_page() -> None:  # noqa: PLR0915
                         extra_classes="text-xs",
                     )
             with ui.grid().classes("w-full grid-cols-12 gap-4"):
-                with ui.column().classes("col-span-12 lg:col-span-8 gap-4"):
+                if layout_mode == "wide_narrow":
-                    with ui.grid().classes("w-full grid-cols-1 lg:grid-cols-2 gap-4"):
+                    _render_wide_narrow_source_content(
-                        with ui.column().classes("gap-2"):
-                            _render_source_navigation(navigation.previous_id, navigation.next_id)
-                            _render_source_viewer_zone(
-                                source,
-                                settings=resolve_runtime_settings(request),
-                                request=request,
-                            )
-                        _render_source_transcription_column(
-                            source=source,
-                            original_transcription=original_transcription,
-                            latest_job_source=latest_job_source,
-                            sources_service=sources_service,
-                        )
-                    _render_machine_candidates(
                         source=source,
+                        navigation=navigation,
+                        request=request,
+                        settings=settings,
+                        original_transcription=original_transcription,
+                        latest_job_source=latest_job_source,
+                        sources_service=sources_service,
+                        attempts=attempts,
+                        evidence_service=evidence_service,
+                    )
+                else:
+                    _render_standard_source_content(
+                        source=source,
+                        navigation=navigation,
+                        request=request,
+                        settings=settings,
+                        original_transcription=original_transcription,
+                        latest_job_source=latest_job_source,
+                        sources_service=sources_service,
                         attempts=attempts,
                         evidence_service=evidence_service,
                     )
@@ -200,7 +215,10 @@ def register_page() -> None:  # noqa: PLR0915
                     source=source,
                     latest_job_source=latest_job_source,
                     latest_attempt=latest_attempt,
-                    settings=resolve_runtime_settings(request),
+                    settings=settings,
+                    column_classes="col-span-12 lg:col-span-4 gap-4"
+                    if layout_mode == "wide_narrow"
+                    else "col-span-12 lg:col-span-3 gap-4",
                 )
 
     @ui.page("/sources/{source_id}/delete")
@@ -312,14 +330,72 @@ def _render_source_transcription_column(
         )
 
 
+def _render_standard_source_content(
+    *,
+    source: Source,
+    navigation: SourceNavigation,
+    request: Request,
+    settings: Settings,
+    original_transcription: str | None,
+    latest_job_source: JobSource | None,
+    sources_service: SourceService,
+    attempts: list[ExecutionAttempt],
+    evidence_service: EvidenceService,
+) -> None:
+    with ui.column().classes("col-span-12 lg:col-span-4 gap-2"):
+        _render_source_navigation(navigation.previous_id, navigation.next_id)
+        _render_source_viewer_zone(source, settings=settings, request=request)
+    with ui.column().classes("col-span-12 lg:col-span-5 gap-4"):
+        _render_source_transcription_zone(
+            source=source,
+            original_transcription=original_transcription,
+            latest_job_source=latest_job_source,
+            sources_service=sources_service,
+        )
+        _render_machine_candidates(
+            source=source,
+            attempts=attempts,
+            evidence_service=evidence_service,
+        )
+
+
+def _render_wide_narrow_source_content(
+    *,
+    source: Source,
+    navigation: SourceNavigation,
+    request: Request,
+    settings: Settings,
+    original_transcription: str | None,
+    latest_job_source: JobSource | None,
+    sources_service: SourceService,
+    attempts: list[ExecutionAttempt],
+    evidence_service: EvidenceService,
+) -> None:
+    with ui.column().classes("col-span-12 lg:col-span-8 gap-4"):
+        _render_source_navigation(navigation.previous_id, navigation.next_id)
+        _render_source_viewer_zone(source, settings=settings, request=request)
+        _render_source_transcription_zone(
+            source=source,
+            original_transcription=original_transcription,
+            latest_job_source=latest_job_source,
+            sources_service=sources_service,
+        )
+        _render_machine_candidates(
+            source=source,
+            attempts=attempts,
+            evidence_service=evidence_service,
+        )
+
+
 def _render_source_metadata_column(
     *,
     source: Source,
     latest_job_source: JobSource | None,
     latest_attempt: LatestExecutionAttempt | None,
     settings: Settings,
+    column_classes: str = "col-span-12 lg:col-span-4 gap-4",
 ) -> None:
-    with ui.column().classes("col-span-12 lg:col-span-4 gap-4"):
+    with ui.column().classes(column_classes):
         _render_source_metadata_zone(source, settings=settings)
         _render_source_job_metadata_zone(
             latest_job_source,
@@ -328,6 +404,35 @@ def _render_source_metadata_column(
         _render_source_revision_logistics_zone(source)
 
 
+def _resolve_source_detail_layout(*, source: Source, settings: Settings) -> str:
+    media_type = lookup_source_mime_type(source.file_path)
+    if not media_type.startswith("image/"):
+        return "standard"
+    absolute = (settings.upload_dir / Path(source.file_path)).resolve()
+    dimensions = _read_image_dimensions(absolute)
+    if dimensions is None:
+        return "standard"
+    width, height = dimensions
+    if _is_wide_narrow_image(width=width, height=height):
+        return "wide_narrow"
+    return "standard"
+
+
+def _is_wide_narrow_image(*, width: int, height: int) -> bool:
+    if width <= 0 or height <= 0:
+        return False
+    return (width / height) >= _WIDE_NARROW_ASPECT_RATIO_THRESHOLD
+
+
+def _read_image_dimensions(path: Path) -> tuple[int, int] | None:
+    try:
+        with Image.open(path) as image:
+            return image.size
+    except (FileNotFoundError, OSError, UnidentifiedImageError):
+        logger.debug("Unable to read image dimensions for source detail layout: %s", path)
+        return None
+
+
 def _render_source_metadata_zone(source: Source, *, settings: Settings) -> None:
     with archival_card(title="Source Metadata"):
         metadata_row("Upload Name:", source.upload_name)

tests/ui/test_sources_page.py

@@ -6,6 +6,7 @@ from pathlib import Path
 from uuid import uuid4
 
 import pytest
+from PIL import Image
 from sqlmodel import select
 
 from transcription.db import session_scope
@@ -20,6 +21,8 @@ from transcription.db.models import JobStatus
 from transcription.db.models import Source
 from transcription.providers.evidence import TransportEvidence
 from transcription.services.sources import SourceService
+from transcription.ui.pages.sources_page import _is_wide_narrow_image
+from transcription.ui.pages.sources_page import _resolve_source_detail_layout
 
 # --- Unit Tests for Model @property Definitions ---
 
@@ -44,6 +47,37 @@ class TestSourceModelProperties:
         assert source.latest_error_detail is None
         assert source.document_name is None
 
+    def test_wide_narrow_aspect_detection_threshold(self):
+        assert _is_wide_narrow_image(width=2200, height=1000)
+        assert not _is_wide_narrow_image(width=1800, height=1000)
+        assert not _is_wide_narrow_image(width=0, height=1000)
+
+    @pytest.mark.asyncio
+    async def test_source_detail_layout_switches_for_wide_narrow_images(self, app_client):
+        app, _ = app_client
+        async with session_scope() as session:
+            document = Document(name="Layout test doc")
+            session.add(document)
+            await session.flush()
+
+            wide_path = app.state.settings.upload_dir / "documents" / str(document.id) / "wide-strip.png"
+            wide_path.parent.mkdir(parents=True, exist_ok=True)
+            Image.new("RGB", (2400, 800), color=(255, 255, 255)).save(wide_path, format="PNG")
+
+            source = Source(
+                document_id=document.id,
+                page_number=1,
+                upload_name="wide-strip.png",
+                filename="wide-strip.png",
+                file_path=wide_path.relative_to(app.state.settings.upload_dir).as_posix(),
+                file_hash="c" * 64,
+                file_size_bytes=wide_path.stat().st_size,
+            )
+            session.add(source)
+            await session.commit()
+
+        assert _resolve_source_detail_layout(source=source, settings=app.state.settings) == "wide_narrow"
+
     @pytest.mark.asyncio
     async def test_source_properties_with_document_and_job_sources(self, seed_job):
         job_id = await seed_job(