1.0.0

src/core/generation_engine.py

@@ -688,21 +688,26 @@ def generate_texture_image(props, width, height):
         traceback.print_exc()
         return None, None
 
-def generate_preview(props, preview_width=512, preview_height=512):
+def generate_preview(props, preview_width=None, preview_height=None):
     pass
     """
     Generate a preview version of the texture at lower resolution.
     
     Args:
         props: Text texture properties object
-        preview_width: Preview image width (default: 512)
+        preview_width: Preview image width. Defaults to the texture width if available.
-        preview_height: Preview image height (default: 512)
+        preview_height: Preview image height. Defaults to the texture height if available.
         
     Returns:
         Blender image object or None on error
     """
     try:
         pass
+        # Use full texture resolution when not explicitly provided
+        if not preview_width or preview_width <= 0:
+            preview_width = getattr(props, 'texture_width', 512) or 512
+        if not preview_height or preview_height <= 0:
+            preview_height = getattr(props, 'texture_height', 512) or 512
         
         # Generate at preview resolution
         result = generate_texture_image(props, preview_width, preview_height)

src/operators/generation_ops.py

@@ -162,37 +162,65 @@ class TEXT_TEXTURE_OT_preview(Operator):
             # Get properties and generate preview with correct parameters
             props = context.scene.text_texture_props
             preview_size = props.preview_size if hasattr(props, 'preview_size') else 512
-            result = generate_preview(props, preview_size, preview_size)
+            preview_width = getattr(props, 'texture_width', preview_size) or preview_size
+            preview_height = getattr(props, 'texture_height', preview_size) or preview_size
+            result = generate_preview(props, preview_width, preview_height)
             
             if result:
                 pass
-                self.report({'INFO'}, f"Preview generated at {preview_size}px")
+                self.report({'INFO'}, f"Preview generated at {preview_width}x{preview_height}px")
                 
-                # Open the preview image in the image editor
+                # Always open a dedicated window to show the preview image
-                # Find or create an image editor area
+                try:
-                for area in context.screen.areas:
                     pass
-                    if area.type == 'IMAGE_EDITOR':
+                    bpy.ops.wm.window_new()
+                    new_window = context.window_manager.windows[-1]
+                    new_screen = new_window.screen
+
+                    # Try to reuse an existing image editor in the new window
+                    image_area = None
+                    for area in new_screen.areas:
                         pass
-                        for space in area.spaces:
+                        if area.type == 'IMAGE_EDITOR':
+                            pass
+                            image_area = area
+                            break
+
+                    # Otherwise convert the largest area to an image editor
+                    if not image_area and new_screen.areas:
+                        pass
+                        image_area = max(new_screen.areas, key=lambda a: a.width * a.height)
+                        image_area.type = 'IMAGE_EDITOR'
+
+                    if image_area:
+                        pass
+                        for space in image_area.spaces:
                             pass
                             if space.type == 'IMAGE_EDITOR':
                                 pass
                                 space.image = result
-                                area.tag_redraw()
+                                image_area.tag_redraw()
                                 break
-                        break
+                    else:
-                else:
+                        pass
+                        self.report({'WARNING'}, "Could not find area to display preview in new window")
+                except Exception as window_err:
                     pass
-                    # If no image editor found, try to open in UV editor or create viewer
+                    self.report({'WARNING'}, f"Preview window open failed: {window_err}. Showing in current window.")
-                    try:
+
+                    # Fallback to setting image in any existing image editor
+                    for area in context.screen.areas:
                         pass
-                        # Try to show in any available viewer
+                        if area.type == 'IMAGE_EDITOR':
-                        bpy.ops.image.view_all('INVOKE_DEFAULT')
+                            pass
-                    except:
+                            for space in area.spaces:
-                        pass
+                                pass
-                        # Fallback message
+                                if space.type == 'IMAGE_EDITOR':
-                        self.report({'INFO'}, f"Preview '{result.name}' created - open Image Editor to view")
+                                    pass
+                                    space.image = result
+                                    area.tag_redraw()
+                                    break
+                            break
                 
                 return {'FINISHED'}
             else:
@@ -720,4 +748,4 @@ __all__ = [
     'TEXT_TEXTURE_OT_generate',
     'TEXT_TEXTURE_OT_preview',
     'TEXT_TEXTURE_OT_generate_shader',
-]
+]

tests/unit/core/test_generation_engine.py

@@ -1027,6 +1027,42 @@ class TestGeneratePreview:
             # The image name contains dimensions
             call_args = mock_bpy.data.images.new.call_args[0]
             assert "128x128" in call_args[0]
+
+    def test_preview_defaults_to_texture_resolution(self):
+        """Preview falls back to full texture dimensions when none provided."""
+        with patch('PIL.Image') as mock_pil_image_module, \
+             patch('PIL.ImageDraw') as mock_pil_imagedraw_module, \
+             patch('PIL.ImageFont') as mock_pil_imagefont_module, \
+             patch('src.core.generation_engine.bpy') as mock_bpy:
+
+            mock_pil_image = MagicMock()
+            mock_pil_image.size = (256, 128)
+            mock_pil_image.getdata.return_value = [(255, 255, 255, 255)] * (256 * 128)
+            mock_pil_image.transpose.return_value = mock_pil_image
+            mock_pil_image_module.new.return_value = mock_pil_image
+            mock_pil_image_module.FLIP_TOP_BOTTOM = 1
+
+            mock_draw = MagicMock()
+            mock_draw.textbbox.return_value = (0, 0, 50, 25)
+            mock_pil_imagedraw_module.Draw.return_value = mock_draw
+
+            mock_font = MagicMock()
+            mock_pil_imagefont_module.load_default.return_value = mock_font
+
+            mock_blender_image = MagicMock()
+            mock_blender_image.pixels = [0.0] * (256 * 128 * 4)
+            mock_bpy.data.images.new.return_value = mock_blender_image
+            mock_bpy.data.images.__contains__.return_value = False
+
+            props = create_mock_props(text="AutoSize")
+            props.texture_width = 256
+            props.texture_height = 128
+
+            result = generate_preview(props)
+
+            assert result is not None
+            call_args = mock_bpy.data.images.new.call_args[0]
+            assert "256x128" in call_args[0]
     
     def test_preview_uses_same_props(self):
         """Test that preview uses same properties as main generation."""