odoo/addons/web_graph/static/lib/flotr2/dev/notes.txt

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Flotr 2 Architecture Notes
Global:
======
Flotr.js -
versioning information
browser detection
extension (plugins, graph types)
draw
clone / merge
tick size
tick formatter
engineering notation
magnitude
rad, pixel, floor
drawText
measureText
getBestTextAlign
align map
compatibility
Graph Architecture:
===================
Axis -
all series
orientation
ticks (major, minor)
scale (d2p, p2d, logarithmic)
notion of stacks
Series -
per 'data'
notion of range (x, y, min, max)
Graph -
DOM constructon
event attachment
options initialization
data range calculations
canvas spacing calculations
event normalization
draw methods
DOM cleanup
event cleanup
Utilities:
==========
Color
build colors
parse textual color data
convert colors
clone colors
Text
calculate text size
canvas size
html size
Date
formatting
constants
Spacing Calculation
===================
Flotr
calculate data
calculate margins
Chart
calculate Data Ranges - Explicit or auto data minimum, maximums
calculate Data Range Extensions - By chart type, extend data range with needs of chart type (ie. stacked bars, stacked lines)
add Chart Padding - By chart type
Text
use explicit margins
calculate label margins
calculate title margins