How To Capture Mac Trackpad Event On HTML5 Canvas

[awt]

Hi,

I'm trying to implement zooming for the entities in my HTML5 Canvas using the Trackpad pinch zoom on my Mac.However, I see that the entire browser is zoomed instead. Does Emscripten provide a callback to capture the Trackpad pinch event? Thanks.

[juj j]

If there exists a JavaScript API to do it, it would be doable. http://stackoverflow.com/questions/15416851/catching-mac-trackpad-zoom suggests that it might have come in as a Ctrl+wheel event at some point in some browsers, in which case you could use Emscripten's html5.h mouse wheel event handler for it in C side, or handwrite a JS handler for it.

2016-04-18 11:47 GMT+03:00 awt <knigh...@gmail.com>:

Hi,

I'm trying to implement zooming for the entities in my HTML5 Canvas using the Trackpad pinch zoom on my Mac.However, I see that the entire browser is zoomed instead. Does Emscripten provide a callback to capture the Trackpad pinch event? Thanks.

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[awt]

ok thanks, I will try to catch the wheel event + ctrl then.

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