# Layout Technical Documentation: Primary Index

Document Status: Work In Progress (attinasi)

The goal of this document is to provide extensive links to documentation on the Gecko Layout components and classes. There are two sections containing links to the documents, and there is overlap between these sections by design. First, there is a 'Topics' section, where documentation is listed by generic topics, more or less free-form and ad-hoc. Second, there is a 'Class and Component' section, where specific classes and components are listed, mapping naturally to the source code. All documents should be indexed in both sections, so pick the index that corresponds to what you are thinking about. A Tech Notes section is also included to help contributors find information on small topics and issues, including simple 'How To' cookbooks.

> For information about the structure of layout documents, see the Layout Documentation Overview and the Layout DocumentationTemplates (High Level Design Template / Detailed Design Template).

Legend

- Black: complete and believed to be up to date (class='good')
- Blue: incomplete or work in progress (class='wip')
- Red: out of date or innacurate (class='ood', bug should be filed and bug number / link noted)
- Green: unassigned work

## Topic Indices

What is Layout? The High Level Layout Overview (attinasi)

Debugging Layout (bernd)

How Reflow works

Tables balancing (karnaze)

Table Borders collapsing (karnaze)

Block in Inline situations (kin)

Managing Floaters

Text Measurement and Text Breaking

Image loading and display

Margin Collapsing

Scrolling Blocks

Box and Block interactions

Printing and Print Preview (rods)

Plugins: the object frame and related layout classes

## Class and Component Indices

Presentation Shell and Context: High Level / Detailed

Frames and the Frame Manager: High Level / Detailed

Reflow: High Level (waterson) / Detailed

Block and Line layout: High Level / Detailed

TextFrame - Text Measurement and Line Breaking: High Level / Detailed

PageSequenceFrame and PageFrame: High Level / Detailed (rods)

Object Frame: High Level / Detailed

Space Manager: High Level / Detailed

Layout Debug Plugin: high Level / Detailed (dcone)

## How To / Tech Notes

How to Debug Reflow

Waterson's Block and Line Cheat Sheet

How to add Style Properties

Measuring Layout Performance

Running the Regression Tests (bernd/dcone)

Debugging Table Reflow

Authors:

- Marc Attinasi (attinasi@netscape.com)

Document History:

- 05/06/2002 - Marc Attinasi: created
- 05/13/2002 - Marc Attinasi: added Block and Line Cheat Sheet, and link to existing Reflow document
- 05/21/2002 - Marc Attinasi: added Bernd's Table Reflow Debugging How-To (thanks Bernd!)
- 05/21/2002 - Bernd Mielke: added Frame Reflow Debugging How-To
- 06/16/2002 - Bernd Mielke: added layout regression test description