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Analysis

Overview

Frame templates provide the ability a frame to be saved as template and used to create new frames. Frame elements that are included into the template are frame properties (excluding z-order) and frame content. Frame templates can be accessed via Frames in Library flap. In later revisions a template editor may be present.

Frame behavior

• Creating - A frame template can be created by dragging the frame to the Frames in Library flap. Other ways may be present too (file -> save frame as template)
• Saving - When a frame is saved as template, the changed properties of the frame are saved - the other properties are with their previous (default) value.
• Editing - When a template is edited, the changes apply to all of the frames created with this template. A warning dialog is showed. Editing global templates reflect to all books that use this template.
  

When a frame created from a template is edited, it's "Use Template" checkbox is unchecked. If checked again, the value defined for this property is reset.

Task requirements

You should provide templating of the following frame properties:

• position (frame bounds without z-order) (See Comments section)
• size (frame bounds without z-order)
• insets
  • padding
  • margins
• content
• border style
  • color
  • thickness?
  • opacity
• shadow style
  • color
  • thickness
  • opacity
• background style
  • image
  • color
  • opacity

Frame HUD

• In the frame hud checkboxes "Use template" and "Lock" should be present for the following
  • position
  • size
  • insets
  • content
  • border style
  • shadow style
  • background style

"Use template" resets the property to the template's value. This should be implemented in this task.
"Lock" prevents the property value from changing. This should be implemented in FRAME_PROPERTY_LOCKING_R0

Task result

The result of this task should be code. You should provide a prototype of frame templating.

Implementation idea

Provide templating for size, position, shadow, border and background. Provide templating for subelements if there is enough time.

Related

PAGE_TEMPLATES_R0
FRAME_CONTENT_R0
FRAME_BOUNDS_R0
FRAME_INSETS_R0
FRAME_MARGINS_R0
FRAME_PADDING_R0
FRAME_BORDERS_R0
FRAME_POSITION_R0
FRAME_SIZE_R0
FRAME_PROPERTY_LOCKING_R0

How to demo

Create frame insert feature (like text, image, etc).

Design

• Add following properties in the Frame class:
  • RwProp<Frame> template() - value property - It is the template frame of the frame.
  • RwProp<BorderStyle> ownBorder() - The own border of this frame. It can be manipulated through a hud.
  • Prop<BorderStyle> border() -auto property - It will be calculated depending on ownBorder(), template() and borderLock()
  • RwProp<BackgroundStyle> ownBackground() - The own background of this frame. It can be manipulated through a hud.
  • Prop<BackgroundStyle> background() -auto property - It will be calculated depending on ownBackground(), template() and backgroundLock()
  • RwProp<ShadowStyle> ownShadow() - The own shadow of this frame. It can be manipulated through a hud.
  • Prop<ShadowStyle> shadow() -auto property - It will be calculated depending on ownShadow(), template() and shadowLock()

Implementation

Testing

Comments

Different behavior should be present for creating a frame by dragging it or menu (when dragged, property "position" should not be used.) Saving the z-order should be discussed as it may be useful.