If you aren't setting target width and height explicitly in the root div,
this change will likely affect the size and layout of your presentation
steps. See DOCUMENTATION.md for details and how to fix.
The relative position in rel plugin is currently based on the world coordinate. So for the same effect, like fly in from the right-hand side, we must use different `data-rel-x/y/z` value. Why not let the plugin do the hard part?
So I introduce a `data-rel-position`, when set to `relative`, all relative attribute is based on the position and rotation of previous slide. So no matter the rotation of previous slide, data-rel-x="1000" always looks like fly in from the right-hand side. We can change the position and rotation of one slide, and the position of all following slides will be changed too.
When `data-rel-position` is set to `relative`, relative rotation has a clear meaning. It describes the relative rotations between slides. We don't need to set rotations for all slide, setting the key slides is enough. If `data-rel-position` is not relative, the effect of `data-rel-rotate-x/y/z` is not clear, so they're only used when `data-rel-position="relative"`.
After the introduction of relative rotation, there're 6 attribute that will inherit from previous slide. If we want to set a relative X move, we have to set all other 5 attributes to 0. It's boring. So a `data-rel-clear` is used to set all 6 attributes to 0, and then the value specified in current slide is applied.
The `examples/3D-positions/index.html` shows some usage. As you can see, the html code of two slide ring is the same, and slides except for the first two in a ring has no position attributes. It work by inheriting the previous one.
This PR invokes a lot math calculations. Basically, the rotation of a slide is translated into the coordinate describing the directions of X/Y/Z axes. And `data-rel-x/y/z` can be easily calculated by that. The rotations is the hard part, I mainly use the algorithm in the Quaternions and spatial rotation - Wikipedia to compose two and more rotations. I'm not a math guy, hope I don't make much mistakes.
The substep plugin currently shows each substep in the order in which
it appears in the HTML. This is not always an ideal fit for some
presentation styles, where it would be helpful to specify a different
order (e.g., to add annotations to an image).
This commit allows users to specify a custom order via the
`data-substep-order` attribute. Substeps without a
`data-substep-order` attribute are revealed last.
This commit also updates the Substep README to document the new
feature.
* Update dependencies and remove outdated ones
* Add package lock file
* Add minified file
* Karma now uses headless browser to run QUnit
* Add to readme that node and npm install is required
* Update license info
* Add lint-new but don't use it in CI yet
* Add support for "." to enter/exit blackout screen
- This is the default on Power Point
- THis add support for remote controller presentation blackout key
* Rename autoplay event call from resume to play
It turns out input[type=text] will only find input fields where
the type attribute is explicitly set to text, but would skip
fields that left it out and defaulted to type text. This changes
to catch all types of input elements.
The media plugin can autoplay and autopause/autostop <audio> and <video> elements when entering and leaving a step.
Support for impressConsole: don't autoplay in preview window and play but mute clips in current window.
The previous attempt at merely reading a property of event.target was
incorrect. It worked at first but errors reappeared later, so must
have been a reace.
This wraps the entire navigation event handlers in the try-catch, and
then checks for the very specific error and suppresses it. Other errors
are rethrown as is.
Changed the onclick handler to trigger the impress:console:open event
and not use the impressConsole() global function any more. The latter
is considered deprecated now that impressConsole is integrated into
impress.js itself.
Also catch some errors that appear in event handlers when the target
for the click event was immediately removed from DOM.
Fixes#651
It turns out in CSS 3D, the order in which you specify for example
the rotateX(), rotateY() and rotateZ() transformations matter.
Each rotation is relative to the objects then-current position.
Impress.js being hardwired to always do rotateX->rotateY->rotateZ
was therefore limiting, and in fact there are some positions that
can never be reached with an xyz order. The new data-rotate-order=""
attribute allows to specify the order as a permutation of the 3
letters x, y, z, thus relaxing this limitation.
See http://openlife.cc/blogs/2016/october/3d-rotations-css-and-impressjs
for (much) more details.
Unlike impress:stepenter, we emit impress:steprefresh event also
when the "entered" step is the current step. This allows plugins
to reload or redraw objects if needed.
(Note that resize plugin already calls goto() on the active element
for similar purposes when it sees a window resize event. Emitting
impress:steprefresh allows other plugins to join in such a refresh,
and also others can call goto() if a refresh is needed.)
The Mobile plugin adds CSS classes body.impress-mobile and
div.prev, div.next. These can be used in CSS to hide non-active
steps completely, in order to reduce memory consumption on
small mobile devices.
