Since the Canvas .text object is jQuery-wrapped, it was not preserved as
expected when clearing the canvas of junk. I've replaced the selection
with one based on element classes.
Instead of giving the axis its own font property, we simply look at its
options, where the font comes from in the first place. A separate
property is unnecessary and inconsistent with the way other axis options
are handled.
Added explicit border-spacing to compensate for global removal of
padding. Flot should really take care of this itself; layout-critical
styles shouldn't depend on the user-agent defaults.
Slightly widened the page to account for the fact that most people have
widescreen monitors these days. Also made text larger and more legible,
and created a nice 'clipping' effect for the placeholder.
To improve organization with the increasing number of examples, every
example page is now the index of its own subdirectory, which contains
all the files specific to that example.
The base implementation uses the new drawText and getTextInfo methods to
draw text in HTML. Canvas rendering has been moved to overrides of
these methods within the canvas-render plugin.
These methods provide a common way to draw HTML text above a canvas.
The getTextInfo method generates div HTML for text with a given font
style/class and angle, measures the element's dimensions, and saves
everything in a cache. The drawText method takes the resulting entry,
finishes generating the inline styles necessary to position the div, and
adds the result to a buffer. The render method dumps the buffer into an
overlay and expires unused cache entries.
Moved canvas creation and size management into a new Canvas class.
This is the first step towards a more object-oriented architecture.
Since we create multiple canvases, and have to maintain several
module-global variables to track their properties, they are the ideal
place to start.
This commit also removes sizing code that was duplicated between
makeCanvas and resizeCanvas.
Thus, prevent it from becoming topmost (it may cause strange looks if
original series is not topmost: some part of it becomes topmost and
overwrites some lines and points that should be above it instead).