feat(domain): Add crop_to_image() and extract_meta() to RasterDocument
- crop_to_image(): Non-destructive crop returning DynamicImage - extract_meta(): Extract BasicMeta and EXIF metadata - Completes migration of RasterDocument features from app/ to domain/ Refs: Migration Step 1.2
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DEVNOTE/Feature-Comparison.md
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DEVNOTE/Feature-Comparison.md
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# Feature-Vergleich: app/document vs domain/document/types
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**Ziel:** Identifizieren welche Features von `src/app/document/` nach `src/domain/document/types/` portiert werden müssen.
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---
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## RasterDocument
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### Struct-Felder
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| Feld | app/ | domain/ | Status |
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|------|------|---------|--------|
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| `document: DynamicImage` | ✅ | ✅ | OK |
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| `native_width: u32` | ✅ | ✅ | OK |
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| `native_height: u32` | ✅ | ✅ | OK |
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| `transform: TransformState` | ✅ | ✅ | OK |
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| `handle: ImageHandle` | ✅ pub | ✅ private | **⚠️ domain: public machen oder getter** |
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| `fine_rotation_angle: f32` | ❌ | ✅ | ℹ️ Extra feature in domain |
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| `interpolation_quality` | ❌ | ✅ | ℹ️ Extra feature in domain |
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**Entscheidung:** Domain-Version hat mehr Features → Domain behalten, `handle` public machen
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---
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### Methoden-Vergleich
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| Methode | app/ | domain/ | Aktion |
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|---------|------|---------|--------|
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| **Core Operations** | | | |
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| `open()` | ✅ | ✅ | ✅ OK |
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| `render()` | ✅ | ✅ | ✅ OK |
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| `save()` | ✅ | ✅ | ✅ OK |
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| | | | |
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| **Transformations (Trait)** | | | |
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| `rotate()` | ✅ | ✅ | ✅ OK |
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| `flip()` | ✅ | ✅ | ✅ OK |
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| `transform_state()` | ✅ | ✅ | ✅ OK |
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| | | | |
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| **Renderable (Trait)** | | | |
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| `info()` | ✅ | ✅ | ✅ OK |
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| | | | |
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| **Dimensions** | | | |
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| `dimensions()` | ✅ | ✅ | ✅ OK (beide haben es!) |
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| `native_dimensions()` | ❌ | ✅ | ℹ️ Extra in domain |
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| | | | |
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| **Crop** | | | |
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| `crop()` | ✅ | ✅ | ✅ OK (beide haben es!) |
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| `crop_to_image()` | ✅ | ❌ | 📋 **Portieren nach domain/** |
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| | | | |
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| **Handle/Image Access** | | | |
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| `handle` (field pub) | ✅ | ❌ | 📋 **Public machen oder getter** |
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| `handle()` (getter) | ❌ | ✅ | ✅ OK (domain hat getter) |
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| `image()` | ❌ | ✅ | ℹ️ Extra in domain |
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| `get_rendered_image()` | ❌ | ✅ | ℹ️ Extra in domain |
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| | | | |
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| **Metadata** | | | |
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| `extract_meta()` | ✅ | ❌ | 📋 **Portieren nach domain/** |
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| | | | |
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| **Internal Helpers** | | | |
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| `refresh_handle()` | ✅ private | ❌ | ℹ️ Evtl. bereits integriert |
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| `apply_rotation()` | ❌ | ✅ | ℹ️ Extra in domain |
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| `apply_flip()` | ❌ | ✅ | ℹ️ Extra in domain |
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| `create_image_handle_from_image()` | ❌ | ✅ | ℹ️ Extra in domain |
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| | | | |
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| **Extra Features (domain)** | | | |
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| `rotate_fine()` | ❌ | ✅ | ℹ️ Feature in domain |
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| `reset_fine_rotation()` | ❌ | ✅ | ℹ️ Feature in domain |
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| `set_interpolation_quality()` | ❌ | ✅ | ℹ️ Feature in domain |
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| `resize_to_format()` | ❌ | ✅ | ℹ️ Feature in domain |
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---
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### Zusammenfassung RasterDocument
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**Domain-Version ist fortgeschrittener** ✅
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- Mehr Features (fine rotation, interpolation quality, resize)
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- Bessere API (getter statt public fields)
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- Saubere Helper-Funktionen
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**Aus app/ portieren:**
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1. ✅ `crop_to_image()` - Nicht-destruktives Crop
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2. ✅ `extract_meta()` - Metadaten-Extraktion
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3. ✅ `handle` public machen ODER getter `handle()` nutzen (bereits vorhanden!)
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**Entscheidung:** Domain-Version als Basis, nur 2 Methoden fehlen
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---
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## VectorDocument
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### Methoden-Vergleich
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| Methode | app/ | domain/ | Aktion |
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|---------|------|---------|--------|
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| `open()` | ✅ | ✅ | ✅ OK |
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| `render()` | ✅ | ✅ | ✅ OK |
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| `dimensions()` | ✅ | ❌ | 📋 **Portieren** |
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| `handle` (pub field) | ✅ | ❌ private | 📋 **Public machen oder getter** |
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| `extract_meta()` | ✅ | ❌ | 📋 **Portieren** |
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| `crop()` | ❌ | ❌ | 📋 **Neu implementieren** (Design-Entscheidung) |
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**Aus app/ portieren:**
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1. `dimensions()`
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2. `extract_meta()`
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3. `handle()` getter oder public
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4. NEU: `crop()` implementieren (render-based)
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---
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## PortableDocument
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### Methoden-Vergleich
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| Methode | app/ | domain/ | Aktion |
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|---------|------|---------|--------|
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| `open()` | ✅ | ✅ | ✅ OK |
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| `render()` | ✅ | ✅ | ✅ OK |
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| `dimensions()` | ✅ | ❌ | 📋 **Portieren** |
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| `handle` (pub field) | ✅ | ❌ private | 📋 **Public machen oder getter** |
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| `extract_meta()` | ✅ | ❌ | 📋 **Portieren** |
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| `crop()` | ❌ | ❌ | 📋 **Neu implementieren** (Design-Entscheidung) |
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| Thumbnails | ✅ | ✅ | ℹ️ Prüfen ob identisch |
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**Aus app/ portieren:**
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1. `dimensions()`
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2. `extract_meta()`
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3. `handle()` getter oder public
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4. NEU: `crop()` implementieren (render-based)
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---
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## Action Items für Schritt 1.2-1.4
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### Schritt 1.2: RasterDocument (60 Min)
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- [x] `crop()` - Bereits vorhanden! ✅
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- [x] `dimensions()` - Bereits vorhanden! ✅
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- [x] `crop_to_image()` hinzufügen ✅
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- [x] `extract_meta()` hinzufügen ✅ (oder in core/metadata.rs)
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- [x] `handle()` getter - Bereits vorhanden! ✅
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### Schritt 1.3: VectorDocument (45 Min)
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- [ ] `dimensions()` implementieren
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- [ ] `handle()` getter hinzufügen
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- [ ] `extract_meta()` implementieren
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- [ ] `crop()` implementieren (render-based, neu!)
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### Schritt 1.4: PortableDocument (45 Min)
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- [ ] `dimensions()` implementieren
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- [ ] `handle()` getter hinzufügen
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- [ ] `extract_meta()` implementieren
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- [ ] `crop()` implementieren (render-based, neu!)
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---
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## Überraschende Erkenntnisse
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1. **Domain hat bereits crop() für Raster!** ✅
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2. **Domain hat bereits dimensions()!** ✅
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3. **Domain hat bereits handle() getter!** ✅
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4. **Domain hat MEHR Features** (fine rotation, interpolation) ✅
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**→ Domain-Implementierung ist besser! Nur 2-3 Methoden fehlen pro Type.**
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---
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**Status:** Vergleich abgeschlossen
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**Nächster Schritt:** 1.2 - RasterDocument ergänzen
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