Difference between revisions of "Porting pushStyle(), popStyle(), and boolean() to Processing.js"
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*''pushStyle()'' calls ''curContext.save()'' and increments ''pushedStates'' by one. | *''pushStyle()'' calls ''curContext.save()'' and increments ''pushedStates'' by one. | ||
*Excess pops are ignored. | *Excess pops are ignored. | ||
| + | |||
| + | ====Related Mozilla bugs==== | ||
| + | *[https://bugzilla.mozilla.org/show_bug.cgi?id=451165 #451165] - ''CanvasRenderingContext2D.fillStyle'' and ''strokeStyle'' accept invalid colours | ||
| + | ** pushStyle() and popStyle() use ''CanvasRenderingContext2D.save()'' and ''restore()''. These functions save ''fillStyle'' and ''strokeStyle''. | ||
===boolean()=== | ===boolean()=== | ||
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*Boolean arguments are returned as themselves. | *Boolean arguments are returned as themselves. | ||
| − | === | + | ===strokeCap()=== |
| − | * | + | *Modifies context.lineCap. |
| − | + | *ROUND -> context.lineCap="round"; | |
| − | + | *SQUARE -> context.lineCap="butt"; | |
| − | + | *PROJECT -> context.lineCap="square"; | |
| + | *Processing default (ROUND) set in '''function''' ''init'''''. | ||
| + | *'''function''' ''size''''' modified to respect previous settings. | ||
| + | **Used to recreate context and reset settings, which overwrote the desired default. | ||
==Things to do== | ==Things to do== | ||
Revision as of 14:47, 29 November 2009
Contents
Project Name
Porting pushStyle(), popStyle(), boolean(), and strokeCap() to Processing.js
Project Description
Processing.js remains incomplete as a port of Processing. Among the features still to be implemented are the functions pushStyle(), popStyle(), boolean(), and strokeCap(). The first two functions automatically save style information for later retrieval and reuse. boolean() "converts" arguments into a boolean value. strokeCap() determines how the ends of lines are rendered.
Resources
Project Leader(s)
Project Contributor(s)
Project Details
pushStyle() and popStyle()
- The number of states saved is tracked by pushedStates.
- pushStyle() calls curContext.save() and increments pushedStates by one.
- Excess pops are ignored.
Related Mozilla bugs
- #451165 - CanvasRenderingContext2D.fillStyle and strokeStyle accept invalid colours
- pushStyle() and popStyle() use CanvasRenderingContext2D.save() and restore(). These functions save fillStyle and strokeStyle.
boolean()
- Non-zero numeric values become true
- Bytes (0's and 1's) are interpreted as numeric values.
- null and undefine become false.
- Boolean arguments are returned as themselves.
strokeCap()
- Modifies context.lineCap.
- ROUND -> context.lineCap="round";
- SQUARE -> context.lineCap="butt";
- PROJECT -> context.lineCap="square";
- Processing default (ROUND) set in function init.
- function size modified to respect previous settings.
- Used to recreate context and reset settings, which overwrote the desired default.
Things to do
| Description | Status | Assigned to | Link |
|---|---|---|---|
| Test cases for pushStyle() and popStyle() | Done | Matthew Lam | Test page |
| Test cases for boolean() | Done | Matthew Lam | Test page |
| Test cases for strokeCap() | In progress | Matthew Lam | Test page |
Releases
| Version | Notes | Resources |
|---|---|---|
| 0.2 | Bug fixes for pushStyle(), popStyle(), and boolean(). Functions now functional. | Patch |
| 0.1 | Basic functionality for pushStyle() and popStyle(). Totally untested code for boolean(). | Patch |
Project News
| Date | Notes |
|---|---|
| Nov. 19, 2009 | Release 0.2 announcement. |
| Oct. 19, 2009 | Release 0.1 announcement. |
| Oct. 12, 2009 | Project expanded to include boolean(). |
| Sept. 28, 2009 | Basic improvements allow the rudimentary Processing example to function in Processing.js. |
| Sept. 27, 2009 | The initial project proposal has been posted. Repository at github created. |
