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Analysis

Overview

Frames coordinates are calculated in relation to the upper left angle of the page which has coordinates (0,0). In default mode the frames position is the position of its contents upper left point, however a frame should be able to set and get its position in all modes(including borders, margins, etc.) and for different special points (middle, right angle, etc). A rotation will be kept in the model only by the angle, so the position should change when rotating also. Frames could overlap and/or not fit into the page. Even when some frames or frame parts are outside the page`s range they are still a part of the working area and should be seen in author mode. They however should be clipped out in reader mode so that the reader stays unaware of them.

Task requirements

• The frame should have only properties defining its position (x, y for example) in default mode.
• A frame should have get and set methods for position in all modes and for all special points.

Task result

The result of this task is source code.

Implementation idea

• Add position() property to the Frame for the default coordinates.
• Add methods with mode and special point arguments for setting and getting this position.

Related

• trunk/sophie2-platform/doc/spec-diagrams/FrameBounds.png
• FRAME_Z_ORDER_R0
• FRAME_BOUNDS_R0
• FRAME_SIZE_R0
• FRAME_INSETS_R0

How to demo

• Create frame with concrete coordinates and check if they are correct.
• Change the frames coordinates in different modes and relative to different points and check that its position is updated correctly.

Design

In the Frame class:

• Use the location() property for the location of the frames default point in default mode. This is the upper left point of the content.

• Create the method ImmPoint getLocation(BoundMode mode, Position pos). It uses the BoundMode.getRect() method to get the frame rectangular in the given mode and the Position.getPoint() method to get the location of the given position of this rectangular.

• Create the method setLocation(BoundMode mode, Position pos, ImmPoint newLocation). The arguments represent the location to set in given position and mode. The method uses the Position.setPoint to calculate the location to be set according to the given location and the BoundMode.setLocation method to calculate the location to be set according given mode.

• TestBoundMode demonstrates the use of those frame bounds functionalities in different modes.

trunk/sophie2-platform/modules/org.sophie2.base.model.book/src/test/java/org/sophie2/base/model/book/TestFrameLocation.java?rev=992

Implementation

trunk/sophie2-platform/modules//org.sophie2.base.model.book/src/main/java/org/sophie2/base/model/book/Frame.java?rev=997

Testing

Comments

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