Fix ghost pages having no size

pyPhotoAlbum/commands.py

@@ -348,6 +348,49 @@ class RotateElementCommand(Command):
         )
 
 
+class AdjustImageCropCommand(Command):
+    """Command for adjusting image crop/pan within frame"""
+    
+    def __init__(self, element: ImageData, old_crop_info: tuple, new_crop_info: tuple):
+        self.element = element
+        self.old_crop_info = old_crop_info
+        self.new_crop_info = new_crop_info
+    
+    def execute(self):
+        """Apply new crop info"""
+        self.element.crop_info = self.new_crop_info
+    
+    def undo(self):
+        """Restore old crop info"""
+        self.element.crop_info = self.old_crop_info
+    
+    def redo(self):
+        """Apply new crop info again"""
+        self.execute()
+    
+    def serialize(self) -> Dict[str, Any]:
+        """Serialize to dictionary"""
+        return {
+            "type": "adjust_image_crop",
+            "element": self.element.serialize(),
+            "old_crop_info": self.old_crop_info,
+            "new_crop_info": self.new_crop_info
+        }
+    
+    @staticmethod
+    def deserialize(data: Dict[str, Any], project) -> 'AdjustImageCropCommand':
+        """Deserialize from dictionary"""
+        elem_data = data["element"]
+        element = ImageData()
+        element.deserialize(elem_data)
+        
+        return AdjustImageCropCommand(
+            element,
+            tuple(data["old_crop_info"]),
+            tuple(data["new_crop_info"])
+        )
+
+
 class AlignElementsCommand(Command):
     """Command for aligning multiple elements"""
     
@@ -717,6 +760,8 @@ class CommandHistory:
                 return ResizeElementsCommand.deserialize(data, project)
             elif cmd_type == "change_zorder":
                 return ChangeZOrderCommand.deserialize(data, project)
+            elif cmd_type == "adjust_image_crop":
+                return AdjustImageCropCommand.deserialize(data, project)
             else:
                 print(f"Warning: Unknown command type: {cmd_type}")
                 return None

pyPhotoAlbum/gl_widget.py

@@ -41,6 +41,10 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
         self.rotation_start_angle = None  # Starting rotation angle
         self.rotation_snap_angle = 15  # Default snap angle in degrees
         
+        # Image pan state (for panning image within frame with Control key)
+        self.image_pan_mode = False  # True when Control+dragging an ImageData element
+        self.image_pan_start_crop = None  # Starting crop_info when pan begins
+        
         # Zoom and pan state
         self.zoom_level = 1.0
         self.pan_offset = [0, 0]
@@ -209,6 +213,16 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
         center_x = x + w / 2
         center_y = y + h / 2
         
+        # Apply rotation if element is rotated
+        from OpenGL.GL import glPushMatrix, glPopMatrix, glTranslatef, glRotatef
+        if self.selected_element.rotation != 0:
+            glPushMatrix()
+            glTranslatef(center_x, center_y, 0)
+            glRotatef(self.selected_element.rotation, 0, 0, 1)
+            glTranslatef(-w / 2, -h / 2, 0)
+            # Now draw as if at origin
+            x, y = 0, 0
+        
         # Draw selection border
         if self.rotation_mode:
             glColor3f(1.0, 0.5, 0.0)  # Orange for rotation mode
@@ -292,6 +306,10 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
                 glVertex2f(hx, hy + handle_size)
                 glEnd()
         
+        # Restore matrix if we applied rotation
+        if self.selected_element.rotation != 0:
+            glPopMatrix()
+    
     def _render_text_overlays(self):
         """Render text content for TextBoxData elements using QPainter overlay"""
         from PyQt6.QtGui import QPainter, QFont, QColor, QPen
@@ -448,12 +466,25 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
             
             element = self._get_element_at(x, y)
             if element:
-                if ctrl_pressed:
+                # Check if Control is pressed and element is ImageData - enter image pan mode
+                if ctrl_pressed and isinstance(element, ImageData) and not self.rotation_mode:
+                    # Enter image pan mode - pan image within frame
+                    self.selected_elements = {element}
+                    self.drag_start_pos = (x, y)
+                    self.image_pan_mode = True
+                    self.image_pan_start_crop = element.crop_info
+                    self._begin_image_pan(element)
+                    self.is_dragging = True
+                    self.setCursor(Qt.CursorShape.SizeAllCursor)  # Show move cursor
+                    print(f"Entered image pan mode for {element}")
+                elif ctrl_pressed:
+                    # Multi-select mode (for non-ImageData or when not dragging)
                     if element in self.selected_elements:
                         self.selected_elements.remove(element)
                     else:
                         self.selected_elements.add(element)
                 else:
+                    # Normal drag mode
                     self.selected_elements = {element}
                     self.drag_start_pos = (x, y)
                     self.drag_start_element_pos = element.position
@@ -493,7 +524,57 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
             return
         
         if self.selected_element:
-            if self.rotation_mode:
+            if self.image_pan_mode:
+                # Image pan mode - adjust crop_info to pan image within frame
+                if not isinstance(self.selected_element, ImageData):
+                    return
+                
+                # Calculate mouse movement in screen pixels
+                screen_dx = x - self.drag_start_pos[0]
+                screen_dy = y - self.drag_start_pos[1]
+                
+                # Get element size in page-local coordinates
+                elem_w, elem_h = self.selected_element.size
+                
+                # Convert screen movement to normalized crop coordinates
+                # Negative because moving mouse right should pan image left (show more of right side)
+                # Scale by zoom level and element size
+                crop_dx = -screen_dx / (elem_w * self.zoom_level)
+                crop_dy = -screen_dy / (elem_h * self.zoom_level)
+                
+                # Get starting crop info
+                start_crop = self.image_pan_start_crop
+                if not start_crop:
+                    start_crop = (0, 0, 1, 1)
+                
+                # Calculate new crop_info
+                crop_width = start_crop[2] - start_crop[0]
+                crop_height = start_crop[3] - start_crop[1]
+                
+                new_x_min = start_crop[0] + crop_dx
+                new_y_min = start_crop[1] + crop_dy
+                new_x_max = new_x_min + crop_width
+                new_y_max = new_y_min + crop_height
+                
+                # Clamp to valid range (0-1) to prevent panning beyond image boundaries
+                if new_x_min < 0:
+                    new_x_min = 0
+                    new_x_max = crop_width
+                if new_x_max > 1:
+                    new_x_max = 1
+                    new_x_min = 1 - crop_width
+                    
+                if new_y_min < 0:
+                    new_y_min = 0
+                    new_y_max = crop_height
+                if new_y_max > 1:
+                    new_y_max = 1
+                    new_y_min = 1 - crop_height
+                
+                # Update element's crop_info
+                self.selected_element.crop_info = (new_x_min, new_y_min, new_x_max, new_y_max)
+                
+            elif self.rotation_mode:
                 # Calculate rotation angle from mouse position relative to element center
                 import math
                 
@@ -528,6 +609,7 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
                 self.selected_element.rotation = angle
                 
                 # Show current angle in status bar
+                main_window = self.window()
                 if hasattr(main_window, 'show_status'):
                     main_window.show_status(f"Rotation: {angle:.1f}°", 100)
                 
@@ -591,11 +673,14 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
             self.drag_start_element_pos = None
             self.resize_handle = None
             self.rotation_start_angle = None
+            self.image_pan_mode = False
+            self.image_pan_start_crop = None
             self.snap_state = {
                 'is_snapped': False,
                 'last_position': None,
                 'last_size': None
             }
+            self.setCursor(Qt.CursorShape.ArrowCursor)  # Reset cursor
         
         elif event.button() == Qt.MouseButton.MiddleButton:
             self.is_panning = False
@@ -909,9 +994,6 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
         if not hasattr(main_window, 'project'):
             return []
         
-        # Get page layout with ghosts from project
-        layout_with_ghosts = main_window.project.calculate_page_layout_with_ghosts()
-        
         dpi = main_window.project.working_dpi
         
         # Use project's page_spacing_mm setting (default is 10mm = 1cm)
@@ -926,6 +1008,22 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
         result = []
         current_y = top_margin_px  # Initial top offset in pixels (not screen pixels)
         
+        # First, render cover if it exists
+        for page in main_window.project.pages:
+            if page.is_cover:
+                result.append(('page', page, current_y))
+                
+                # Calculate cover height in pixels
+                page_height_mm = page.layout.size[1]
+                page_height_px = page_height_mm * dpi / 25.4
+                
+                # Move to next position (add height + spacing)
+                current_y += page_height_px + spacing_px
+                break  # Only one cover allowed
+        
+        # Get page layout with ghosts from project (this excludes cover)
+        layout_with_ghosts = main_window.project.calculate_page_layout_with_ghosts()
+        
         for page_type, page_obj, logical_pos in layout_with_ghosts:
             if page_type == 'page':
                 # Regular page (single or double spread)
@@ -1000,13 +1098,12 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
         if not hasattr(main_window, 'project'):
             return False
         
-        # Get full layout with ghosts to determine insertion position
+        # Get page positions which includes ghosts
-        layout_with_ghosts = main_window.project.calculate_page_layout_with_ghosts()
         page_positions = self._get_page_positions()
         
-        # Track which index in the page list corresponds to each position
+        # Check each position for ghost pages
-        ghost_index = 0
+        for idx, (page_type, page_or_ghost, y_offset) in enumerate(page_positions):
-        for idx, ((page_type, page_obj_layout, logical_pos), (_, page_or_ghost, y_offset)) in enumerate(zip(layout_with_ghosts, page_positions)):
+            # Skip non-ghost pages
             if page_type != 'ghost':
                 continue
             
@@ -1031,8 +1128,8 @@ class GLWidget(UndoableInteractionMixin, QOpenGLWidget):
             # Check if click is anywhere on the ghost page (entire page is clickable)
             if renderer.is_point_in_page(x, y):
                 # User clicked the ghost page!
-                # Calculate the insertion index (count real pages before this ghost)
+                # Calculate the insertion index (count real pages before this ghost in page_positions)
-                insert_index = sum(1 for i, (pt, _, _) in enumerate(layout_with_ghosts) if i < idx and pt == 'page')
+                insert_index = sum(1 for i, (pt, _, _) in enumerate(page_positions) if i < idx and pt == 'page')
                 
                 print(f"Ghost page clicked at index {insert_index} - inserting new page in place")
                 

pyPhotoAlbum/mixins/interaction_undo.py

@@ -64,6 +64,24 @@ class UndoableInteractionMixin:
         self._interaction_start_size = None
         self._interaction_start_rotation = element.rotation
     
+    def _begin_image_pan(self, element):
+        """
+        Begin tracking an image pan operation.
+        
+        Args:
+            element: The ImageData element being panned
+        """
+        from pyPhotoAlbum.models import ImageData
+        if not isinstance(element, ImageData):
+            return
+        
+        self._interaction_element = element
+        self._interaction_type = 'image_pan'
+        self._interaction_start_pos = None
+        self._interaction_start_size = None
+        self._interaction_start_rotation = None
+        self._interaction_start_crop_info = element.crop_info
+    
     def _end_interaction(self):
         """
         End the current interaction and create appropriate undo/redo command.
@@ -142,6 +160,29 @@ class UndoableInteractionMixin:
                     )
                     print(f"Rotation command created: {self._interaction_start_rotation:.1f}° → {new_rotation:.1f}°")
         
+        elif self._interaction_type == 'image_pan':
+            # Check if crop_info actually changed
+            from pyPhotoAlbum.models import ImageData
+            if isinstance(element, ImageData):
+                new_crop_info = element.crop_info
+                if hasattr(self, '_interaction_start_crop_info') and self._interaction_start_crop_info is not None:
+                    # Check if crop changed significantly (more than 0.001 in any coordinate)
+                    if new_crop_info != self._interaction_start_crop_info:
+                        old_crop = self._interaction_start_crop_info
+                        significant_change = any(
+                            abs(new_crop_info[i] - old_crop[i]) > 0.001 
+                            for i in range(4)
+                        )
+                        
+                        if significant_change:
+                            from pyPhotoAlbum.commands import AdjustImageCropCommand
+                            command = AdjustImageCropCommand(
+                                element,
+                                self._interaction_start_crop_info,
+                                new_crop_info
+                            )
+                            print(f"Image pan command created: {self._interaction_start_crop_info} → {new_crop_info}")
+        
         # Execute the command through history if one was created
         if command:
             main_window.project.history.execute(command)
@@ -156,6 +197,8 @@ class UndoableInteractionMixin:
         self._interaction_start_pos = None
         self._interaction_start_size = None
         self._interaction_start_rotation = None
+        if hasattr(self, '_interaction_start_crop_info'):
+            self._interaction_start_crop_info = None
     
     def _cancel_interaction(self):
         """Cancel the current interaction without creating a command"""

pyPhotoAlbum/mixins/operations/page_ops.py

@@ -62,9 +62,10 @@ class PageOperationsMixin:
         
         page_combo = QComboBox()
         for i, page in enumerate(self.project.pages):
-            page_label = f"Page {page.page_number}"
+            # Use display name helper
-            if page.is_double_spread:
+            page_label = self.project.get_page_display_name(page)
-                page_label += f" (Double Spread: {page.page_number}-{page.page_number + 1})"
+            if page.is_double_spread and not page.is_cover:
+                page_label += f" (Double Spread)"
             if page.manually_sized:
                 page_label += " *"
             page_combo.addItem(page_label, i)
@@ -78,6 +79,48 @@ class PageOperationsMixin:
         page_select_group.setLayout(page_select_layout)
         layout.addWidget(page_select_group)
         
+        # Cover settings group (only show if first page is selected)
+        cover_group = QGroupBox("Cover Settings")
+        cover_layout = QVBoxLayout()
+        
+        # Cover checkbox
+        cover_checkbox = QCheckBox("Designate as Cover")
+        cover_checkbox.setToolTip("Mark this page as the book cover with wrap-around front/spine/back")
+        cover_layout.addWidget(cover_checkbox)
+        
+        # Paper thickness
+        thickness_layout = QHBoxLayout()
+        thickness_layout.addWidget(QLabel("Paper Thickness:"))
+        thickness_spinbox = QDoubleSpinBox()
+        thickness_spinbox.setRange(0.05, 1.0)
+        thickness_spinbox.setSingleStep(0.05)
+        thickness_spinbox.setValue(self.project.paper_thickness_mm)
+        thickness_spinbox.setSuffix(" mm")
+        thickness_spinbox.setToolTip("Thickness of paper for spine calculation")
+        thickness_layout.addWidget(thickness_spinbox)
+        cover_layout.addLayout(thickness_layout)
+        
+        # Bleed margin
+        bleed_layout = QHBoxLayout()
+        bleed_layout.addWidget(QLabel("Bleed Margin:"))
+        bleed_spinbox = QDoubleSpinBox()
+        bleed_spinbox.setRange(0, 10)
+        bleed_spinbox.setSingleStep(0.5)
+        bleed_spinbox.setValue(self.project.cover_bleed_mm)
+        bleed_spinbox.setSuffix(" mm")
+        bleed_spinbox.setToolTip("Extra margin around cover for printing bleed")
+        bleed_layout.addWidget(bleed_spinbox)
+        cover_layout.addLayout(bleed_layout)
+        
+        # Calculated spine width display
+        spine_info_label = QLabel()
+        spine_info_label.setStyleSheet("font-size: 9pt; color: #0066cc; padding: 5px;")
+        spine_info_label.setWordWrap(True)
+        cover_layout.addWidget(spine_info_label)
+        
+        cover_group.setLayout(cover_layout)
+        layout.addWidget(cover_group)
+        
         # Page size group
         size_group = QGroupBox("Page Size")
         size_layout = QVBoxLayout()
@@ -136,8 +179,21 @@ class PageOperationsMixin:
         # Function to update displayed values when page selection changes
         def on_page_changed(index):
             selected_page = self.project.pages[index]
-            # Get base width (accounting for double spreads)
+            
-            if selected_page.is_double_spread:
+            # Show/hide cover settings based on page selection
+            is_first_page = (index == 0)
+            cover_group.setVisible(is_first_page)
+            
+            # Update cover checkbox
+            if is_first_page:
+                cover_checkbox.setChecked(selected_page.is_cover)
+                update_spine_info()
+            
+            # Get base width (accounting for double spreads and covers)
+            if selected_page.is_cover:
+                # For covers, show the full calculated width
+                display_width = selected_page.layout.size[0]
+            elif selected_page.is_double_spread:
                 display_width = selected_page.layout.base_width if hasattr(selected_page.layout, 'base_width') else selected_page.layout.size[0] / 2
             else:
                 display_width = selected_page.layout.size[0]
@@ -145,6 +201,41 @@ class PageOperationsMixin:
             width_spinbox.setValue(display_width)
             height_spinbox.setValue(selected_page.layout.size[1])
             
+            # Disable size editing for covers (auto-calculated)
+            if selected_page.is_cover:
+                width_spinbox.setEnabled(False)
+                height_spinbox.setEnabled(False)
+                set_default_checkbox.setEnabled(False)
+            else:
+                width_spinbox.setEnabled(True)
+                height_spinbox.setEnabled(True)
+                set_default_checkbox.setEnabled(True)
+        
+        def update_spine_info():
+            """Update the spine information display"""
+            if cover_checkbox.isChecked():
+                # Calculate spine width with current settings
+                content_pages = sum(p.get_page_count() for p in self.project.pages if not p.is_cover)
+                import math
+                sheets = math.ceil(content_pages / 4)
+                spine_width = sheets * thickness_spinbox.value() * 2
+                
+                page_width = self.project.page_size_mm[0]
+                total_width = (page_width * 2) + spine_width + (bleed_spinbox.value() * 2)
+                
+                spine_info_label.setText(
+                    f"Cover Layout: Front ({page_width:.0f}mm) + Spine ({spine_width:.2f}mm) + "
+                    f"Back ({page_width:.0f}mm) + Bleed ({bleed_spinbox.value():.1f}mm × 2)\n"
+                    f"Total Width: {total_width:.1f}mm | Content Pages: {content_pages} | Sheets: {sheets}"
+                )
+            else:
+                spine_info_label.setText("")
+        
+        # Connect signals
+        cover_checkbox.stateChanged.connect(lambda: update_spine_info())
+        thickness_spinbox.valueChanged.connect(lambda: update_spine_info())
+        bleed_spinbox.valueChanged.connect(lambda: update_spine_info())
+        
         # Connect page selection change
         page_combo.currentIndexChanged.connect(on_page_changed)
         
@@ -172,33 +263,57 @@ class PageOperationsMixin:
             selected_index = page_combo.currentData()
             selected_page = self.project.pages[selected_index]
             
+            # Update project cover settings
+            self.project.paper_thickness_mm = thickness_spinbox.value()
+            self.project.cover_bleed_mm = bleed_spinbox.value()
+            
+            # Handle cover designation (only for first page)
+            if selected_index == 0:
+                was_cover = selected_page.is_cover
+                is_cover = cover_checkbox.isChecked()
+                
+                if was_cover != is_cover:
+                    selected_page.is_cover = is_cover
+                    self.project.has_cover = is_cover
+                    
+                    if is_cover:
+                        # Calculate and set cover dimensions
+                        self.project.update_cover_dimensions()
+                        print(f"Page 1 designated as cover")
+                    else:
+                        # Restore normal page size
+                        selected_page.layout.size = self.project.page_size_mm
+                        print(f"Cover removed from page 1")
+            
             # Get new values
             width_mm = width_spinbox.value()
             height_mm = height_spinbox.value()
             
-            # Check if size actually changed
+            # Don't allow manual size changes for covers
-            # For double spreads, compare with base width
+            if not selected_page.is_cover:
-            if selected_page.is_double_spread:
+                # Check if size actually changed
-                old_base_width = selected_page.layout.base_width if hasattr(selected_page.layout, 'base_width') else selected_page.layout.size[0] / 2
+                # For double spreads, compare with base width
-                old_height = selected_page.layout.size[1]
+                if selected_page.is_double_spread:
-                size_changed = (old_base_width != width_mm or old_height != height_mm)
+                    old_base_width = selected_page.layout.base_width if hasattr(selected_page.layout, 'base_width') else selected_page.layout.size[0] / 2
+                    old_height = selected_page.layout.size[1]
+                    size_changed = (old_base_width != width_mm or old_height != height_mm)
                     
-                if size_changed:
+                    if size_changed:
-                    # Update double spread
+                        # Update double spread
-                    selected_page.layout.base_width = width_mm
+                        selected_page.layout.base_width = width_mm
-                    selected_page.layout.size = (width_mm * 2, height_mm)
+                        selected_page.layout.size = (width_mm * 2, height_mm)
-                    selected_page.manually_sized = True
+                        selected_page.manually_sized = True
-                    print(f"Page {selected_page.page_number} (double spread) updated to {width_mm}×{height_mm} mm per page")
+                        print(f"{self.project.get_page_display_name(selected_page)} (double spread) updated to {width_mm}×{height_mm} mm per page")
-            else:
+                else:
-                old_size = selected_page.layout.size
+                    old_size = selected_page.layout.size
-                size_changed = (old_size != (width_mm, height_mm))
+                    size_changed = (old_size != (width_mm, height_mm))
                     
-                if size_changed:
+                    if size_changed:
-                    # Update single page
+                        # Update single page
-                    selected_page.layout.size = (width_mm, height_mm)
+                        selected_page.layout.size = (width_mm, height_mm)
-                    selected_page.layout.base_width = width_mm
+                        selected_page.layout.base_width = width_mm
-                    selected_page.manually_sized = True
+                        selected_page.manually_sized = True
-                    print(f"Page {selected_page.page_number} updated to {width_mm}×{height_mm} mm")
+                        print(f"{self.project.get_page_display_name(selected_page)} updated to {width_mm}×{height_mm} mm")
             
             # Update DPI settings
             self.project.working_dpi = working_dpi_spinbox.value()
@@ -212,9 +327,13 @@ class PageOperationsMixin:
             self.update_view()
             
             # Build status message
-            status_msg = f"Page {selected_page.page_number} size: {width_mm}×{height_mm} mm"
+            page_name = self.project.get_page_display_name(selected_page)
-            if set_default_checkbox.isChecked():
+            if selected_page.is_cover:
-                status_msg += " (set as default)"
+                status_msg = f"{page_name} updated"
+            else:
+                status_msg = f"{page_name} size: {width_mm}×{height_mm} mm"
+                if set_default_checkbox.isChecked():
+                    status_msg += " (set as default)"
             self.show_status(status_msg, 2000)
     
     @ribbon_action(

pyPhotoAlbum/models.py

@@ -44,13 +44,25 @@ class ImageData(BaseLayoutElement):
                                glEnable, glDisable, GL_TEXTURE_2D, glBindTexture, glTexCoord2f,
                                glGenTextures, glTexImage2D, GL_RGBA, GL_UNSIGNED_BYTE, 
                                glTexParameteri, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MAG_FILTER, GL_LINEAR,
-                               glDeleteTextures)
+                               glDeleteTextures, glPushMatrix, glPopMatrix, glTranslatef, glRotatef)
         from PIL import Image
         import os
         
         x, y = self.position
         w, h = self.size
         
+        # Apply rotation if needed
+        if self.rotation != 0:
+            glPushMatrix()
+            # Translate to center of element
+            center_x = x + w / 2
+            center_y = y + h / 2
+            glTranslatef(center_x, center_y, 0)
+            glRotatef(self.rotation, 0, 0, 1)
+            glTranslatef(-w / 2, -h / 2, 0)
+            # Now render at origin (rotation pivot is at element center)
+            x, y = 0, 0
+        
         # Try to load and render the actual image
         texture_id = None
         
@@ -192,6 +204,10 @@ class ImageData(BaseLayoutElement):
         glVertex2f(x, y + h)
         glEnd()
         
+        # Pop matrix if we pushed for rotation
+        if self.rotation != 0:
+            glPopMatrix()
+
     def serialize(self) -> Dict[str, Any]:
         """Serialize image data to dictionary"""
         return {
@@ -223,11 +239,24 @@ class PlaceholderData(BaseLayoutElement):
 
     def render(self):
         """Render the placeholder using OpenGL"""
-        from OpenGL.GL import glBegin, glEnd, glVertex2f, glColor3f, GL_QUADS, GL_LINE_LOOP, glLineStipple, glEnable, glDisable, GL_LINE_STIPPLE
+        from OpenGL.GL import (glBegin, glEnd, glVertex2f, glColor3f, GL_QUADS, GL_LINE_LOOP, glLineStipple, 
+                               glEnable, glDisable, GL_LINE_STIPPLE, glPushMatrix, glPopMatrix, glTranslatef, glRotatef)
         
         x, y = self.position
         w, h = self.size
         
+        # Apply rotation if needed
+        if self.rotation != 0:
+            glPushMatrix()
+            # Translate to center of element
+            center_x = x + w / 2
+            center_y = y + h / 2
+            glTranslatef(center_x, center_y, 0)
+            glRotatef(self.rotation, 0, 0, 1)
+            glTranslatef(-w / 2, -h / 2, 0)
+            # Now render at origin (rotation pivot is at element center)
+            x, y = 0, 0
+        
         # Draw a light gray rectangle as placeholder background
         glColor3f(0.9, 0.9, 0.9)  # Light gray
         glBegin(GL_QUADS)
@@ -249,6 +278,10 @@ class PlaceholderData(BaseLayoutElement):
         glEnd()
         glDisable(GL_LINE_STIPPLE)
         
+        # Pop matrix if we pushed for rotation
+        if self.rotation != 0:
+            glPopMatrix()
+
     def serialize(self) -> Dict[str, Any]:
         """Serialize placeholder data to dictionary"""
         return {
@@ -282,11 +315,24 @@ class TextBoxData(BaseLayoutElement):
     def render(self):
         """Render the text box using OpenGL"""
         from OpenGL.GL import (glBegin, glEnd, glVertex2f, glColor3f, glColor4f, GL_QUADS, GL_LINE_LOOP,
-                               glEnable, glDisable, GL_BLEND, glBlendFunc, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
+                               glEnable, glDisable, GL_BLEND, glBlendFunc, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
+                               glPushMatrix, glPopMatrix, glTranslatef, glRotatef)
         
         x, y = self.position
         w, h = self.size
         
+        # Apply rotation if needed
+        if self.rotation != 0:
+            glPushMatrix()
+            # Translate to center of element
+            center_x = x + w / 2
+            center_y = y + h / 2
+            glTranslatef(center_x, center_y, 0)
+            glRotatef(self.rotation, 0, 0, 1)
+            glTranslatef(-w / 2, -h / 2, 0)
+            # Now render at origin (rotation pivot is at element center)
+            x, y = 0, 0
+        
         # Enable alpha blending for transparency
         glEnable(GL_BLEND)
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
@@ -311,6 +357,10 @@ class TextBoxData(BaseLayoutElement):
         glVertex2f(x, y + h)
         glEnd()
         
+        # Pop matrix if we pushed for rotation
+        if self.rotation != 0:
+            glPopMatrix()
+        
         # Note: Text content is rendered using QPainter overlay in GLWidget.paintGL()
 
     def serialize(self) -> Dict[str, Any]:

pyPhotoAlbum/pdf_exporter.py

@@ -48,8 +48,11 @@ class PDFExporter:
         self.current_pdf_page = 1
         
         try:
-            # Calculate total pages for progress
+            # Calculate total pages for progress (cover counts as 1)
-            total_pages = sum(2 if page.is_double_spread else 1 for page in self.project.pages)
+            total_pages = sum(
+                1 if page.is_cover else (2 if page.is_double_spread else 1) 
+                for page in self.project.pages
+            )
             
             # Get page dimensions from project (in mm)
             page_width_mm, page_height_mm = self.project.page_size_mm
@@ -64,11 +67,18 @@ class PDFExporter:
             # Process each page
             pages_processed = 0
             for page in self.project.pages:
+                # Get display name for progress
+                page_name = self.project.get_page_display_name(page)
+                
                 if progress_callback:
                     progress_callback(pages_processed, total_pages, 
-                                    f"Exporting page {page.page_number}...")
+                                    f"Exporting {page_name}...")
                 
-                if page.is_double_spread:
+                if page.is_cover:
+                    # Export cover as single page with wrap-around design
+                    self._export_cover(c, page, page_width_pt, page_height_pt)
+                    pages_processed += 1
+                elif page.is_double_spread:
                     # Ensure spread starts on even page (left page of facing pair)
                     if self.current_pdf_page % 2 == 1:
                         # Insert blank page
@@ -98,6 +108,70 @@ class PDFExporter:
             self.warnings.append(f"Export failed: {str(e)}")
             return False, self.warnings
     
+    def _export_cover(self, c: canvas.Canvas, page, page_width_pt: float, 
+                     page_height_pt: float):
+        """
+        Export a cover page to PDF.
+        Cover has different dimensions (wrap-around: front + spine + back + bleed).
+        """
+        # Get cover dimensions (already calculated in page.layout.size)
+        cover_width_mm, cover_height_mm = page.layout.size
+        
+        # Convert to PDF points
+        cover_width_pt = cover_width_mm * self.MM_TO_POINTS
+        cover_height_pt = cover_height_mm * self.MM_TO_POINTS
+        
+        # Create a new page with cover dimensions
+        c.setPageSize((cover_width_pt, cover_height_pt))
+        
+        # Render all elements on the cover
+        for element in sorted(page.layout.elements, key=lambda x: x.z_index):
+            self._render_element(c, element, 0, cover_width_pt, cover_height_pt, "Cover")
+        
+        # Draw guide lines for front/spine/back zones
+        self._draw_cover_guides(c, cover_width_pt, cover_height_pt)
+        
+        c.showPage()  # Finish cover page
+        self.current_pdf_page += 1
+        
+        # Reset page size for content pages
+        c.setPageSize((page_width_pt, page_height_pt))
+    
+    def _draw_cover_guides(self, c: canvas.Canvas, cover_width_pt: float, cover_height_pt: float):
+        """Draw guide lines for cover zones (front/spine/back)"""
+        from reportlab.lib.colors import lightgrey
+        
+        # Calculate zone boundaries
+        bleed_pt = self.project.cover_bleed_mm * self.MM_TO_POINTS
+        page_width_pt = self.project.page_size_mm[0] * self.MM_TO_POINTS
+        spine_width_pt = self.project.calculate_spine_width() * self.MM_TO_POINTS
+        
+        # Zone boundaries (from left to right)
+        # Bleed | Back | Spine | Front | Bleed
+        back_start = bleed_pt
+        spine_start = bleed_pt + page_width_pt
+        front_start = bleed_pt + page_width_pt + spine_width_pt
+        front_end = bleed_pt + page_width_pt + spine_width_pt + page_width_pt
+        
+        # Draw dashed lines at zone boundaries
+        c.saveState()
+        c.setStrokeColor(lightgrey)
+        c.setDash(3, 3)
+        c.setLineWidth(0.5)
+        
+        # Back/Spine boundary
+        c.line(spine_start, 0, spine_start, cover_height_pt)
+        
+        # Spine/Front boundary
+        c.line(front_start, 0, front_start, cover_height_pt)
+        
+        # Bleed boundaries (outer edges)
+        if bleed_pt > 0:
+            c.line(back_start, 0, back_start, cover_height_pt)
+            c.line(front_end, 0, front_end, cover_height_pt)
+        
+        c.restoreState()
+    
     def _export_single_page(self, c: canvas.Canvas, page, page_width_pt: float, 
                            page_height_pt: float):
         """Export a single page to PDF"""

pyPhotoAlbum/project.py

@@ -3,6 +3,7 @@ Project and page management for pyPhotoAlbum
 """
 
 import os
+import math
 from typing import List, Dict, Any, Optional, Tuple
 from pyPhotoAlbum.page_layout import PageLayout
 from pyPhotoAlbum.commands import CommandHistory
@@ -109,6 +110,12 @@ class Project:
         self.export_dpi = 300  # Default export DPI
         self.page_spacing_mm = 10.0  # Default spacing between pages (1cm)
         
+        # Cover configuration
+        self.has_cover = False  # Whether project has a cover
+        self.paper_thickness_mm = 0.2  # Paper thickness for spine calculation (default 0.2mm)
+        self.cover_bleed_mm = 0.0  # Bleed margin for cover (default 0mm)
+        self.binding_type = "saddle_stitch"  # Binding type for spine calculation
+        
         # Embedded templates - templates that travel with the project
         self.embedded_templates: Dict[str, Dict[str, Any]] = {}
         
@@ -122,14 +129,113 @@ class Project:
     def add_page(self, page: Page):
         """Add a page to the project"""
         self.pages.append(page)
+        # Update cover dimensions if we have a cover
+        if self.has_cover and self.pages:
+            self.update_cover_dimensions()
 
     def remove_page(self, page: Page):
         """Remove a page from the project"""
         self.pages.remove(page)
+        # Update cover dimensions if we have a cover
+        if self.has_cover and self.pages:
+            self.update_cover_dimensions()
+    
+    def calculate_spine_width(self) -> float:
+        """
+        Calculate spine width based on page count and paper thickness.
+        
+        For saddle stitch binding:
+        - Each sheet = 4 pages (2 pages per side when folded)
+        - Spine width = (Number of sheets × Paper thickness × 2)
+        
+        Returns:
+            Spine width in mm
+        """
+        if not self.has_cover:
+            return 0.0
+        
+        # Count content pages (excluding cover)
+        content_page_count = sum(
+            page.get_page_count() 
+            for page in self.pages 
+            if not page.is_cover
+        )
+        
+        if self.binding_type == "saddle_stitch":
+            # Calculate number of sheets (each sheet = 4 pages)
+            sheets = math.ceil(content_page_count / 4)
+            # Spine width = sheets × paper thickness × 2 (folded)
+            spine_width = sheets * self.paper_thickness_mm * 2
+            return spine_width
+        
+        return 0.0
+    
+    def update_cover_dimensions(self):
+        """
+        Update cover page dimensions based on current page count and settings.
+        Calculates: Front width + Spine width + Back width + Bleed margins
+        """
+        if not self.has_cover or not self.pages:
+            return
+        
+        # Find cover page (should be first page)
+        cover_page = None
+        for page in self.pages:
+            if page.is_cover:
+                cover_page = page
+                break
+        
+        if not cover_page:
+            return
+        
+        # Get standard page dimensions
+        page_width_mm, page_height_mm = self.page_size_mm
+        
+        # Calculate spine width
+        spine_width = self.calculate_spine_width()
+        
+        # Calculate cover dimensions
+        # Cover = Front + Spine + Back + Bleed on all sides
+        cover_width = (page_width_mm * 2) + spine_width + (self.cover_bleed_mm * 2)
+        cover_height = page_height_mm + (self.cover_bleed_mm * 2)
+        
+        # Update cover page layout
+        cover_page.layout.size = (cover_width, cover_height)
+        cover_page.layout.base_width = page_width_mm  # Store base width for reference
+        cover_page.manually_sized = True  # Mark as manually sized
+        
+        print(f"Cover dimensions updated: {cover_width:.1f} × {cover_height:.1f} mm "
+              f"(Front: {page_width_mm}, Spine: {spine_width:.2f}, Back: {page_width_mm}, "
+              f"Bleed: {self.cover_bleed_mm})")
+    
+    def get_page_display_name(self, page: Page) -> str:
+        """
+        Get display name for a page.
+        
+        Args:
+            page: The page to get the display name for
+            
+        Returns:
+            Display name like "Cover", "Page 1", "Pages 1-2", etc.
+        """
+        if page.is_cover:
+            return "Cover"
+        
+        # Calculate adjusted page number (excluding cover from count)
+        adjusted_num = page.page_number
+        if self.has_cover:
+            # Subtract 1 to account for cover
+            adjusted_num = page.page_number - 1
+        
+        if page.is_double_spread:
+            return f"Pages {adjusted_num}-{adjusted_num + 1}"
+        else:
+            return f"Page {adjusted_num}"
     
     def calculate_page_layout_with_ghosts(self) -> List[Tuple[str, Any, int]]:
         """
         Calculate page layout including ghost pages for alignment.
+        Excludes cover from spread calculations.
         
         Returns:
             List of tuples (page_type, page_or_ghost, logical_position)
@@ -143,6 +249,10 @@ class Project:
         current_position = 1  # Start at position 1 (right page)
         
         for page in self.pages:
+            # Skip cover in spread calculations
+            if page.is_cover:
+                # Cover is rendered separately, doesn't participate in spreads
+                continue
             # Check if we need a ghost page for alignment
             # Ghost pages are needed when a single page would appear on the left
             # but should be on the right (odd positions)
@@ -198,6 +308,10 @@ class Project:
             "working_dpi": self.working_dpi,
             "export_dpi": self.export_dpi,
             "page_spacing_mm": self.page_spacing_mm,
+            "has_cover": self.has_cover,
+            "paper_thickness_mm": self.paper_thickness_mm,
+            "cover_bleed_mm": self.cover_bleed_mm,
+            "binding_type": self.binding_type,
             "embedded_templates": self.embedded_templates,
             "pages": [page.serialize() for page in self.pages],
             "history": self.history.serialize(),
@@ -215,6 +329,10 @@ class Project:
         self.working_dpi = data.get("working_dpi", 300)
         self.export_dpi = data.get("export_dpi", 300)
         self.page_spacing_mm = data.get("page_spacing_mm", 10.0)
+        self.has_cover = data.get("has_cover", False)
+        self.paper_thickness_mm = data.get("paper_thickness_mm", 0.2)
+        self.cover_bleed_mm = data.get("cover_bleed_mm", 0.0)
+        self.binding_type = data.get("binding_type", "saddle_stitch")
         
         # Deserialize embedded templates
         self.embedded_templates = data.get("embedded_templates", {})