piskel/js/controller/AnimatedPreviewController.js
jdescottes 51f86afe6e feature : zoom
- Created AbstractRenderer in rendering package
- Created CachedRenderer and CachedFrameRenderer to extract basic frame
  caching logic from DrawingController
- Created RendererManager to synchronize updates made to several Renderer
  settings
- Moved FrameRenderer from pskl.rendering to pskl.rendering.frame
- Fixed the resize of the drawing area when the window is resized
2013-11-01 15:39:42 +01:00

72 lines
2.5 KiB
JavaScript

(function () {
var ns = $.namespace("pskl.controller");
ns.AnimatedPreviewController = function (piskelController, container, dpi) {
this.piskelController = piskelController;
this.container = container;
this.elapsedTime = 0;
this.currentIndex = 0;
this.setFPS(Constants.DEFAULT.FPS);
var zoom = this.calculateZoom_();
var renderingOptions = {
"zoom": zoom,
"height" : this.piskelController.getCurrentFrame().getHeight() * zoom,
"width" : this.piskelController.getCurrentFrame().getWidth() * zoom
};
this.renderer = new pskl.rendering.frame.FrameRenderer(this.container, renderingOptions);
$.subscribe(Events.FRAME_SIZE_CHANGED, this.updateZoom_.bind(this));
};
ns.AnimatedPreviewController.prototype.init = function () {
// the oninput event won't work on IE10 unfortunately, but at least will provide a
// consistent behavior across all other browsers that support the input type range
// see https://bugzilla.mozilla.org/show_bug.cgi?id=853670
$("#preview-fps")[0].addEventListener('change', this.onFPSSliderChange.bind(this));
};
ns.AnimatedPreviewController.prototype.onFPSSliderChange = function (evt) {
this.setFPS(parseInt($("#preview-fps")[0].value, 10));
};
ns.AnimatedPreviewController.prototype.setFPS = function (fps) {
this.fps = fps;
$("#preview-fps").val(this.fps);
$("#display-fps").html(this.fps + " FPS");
};
ns.AnimatedPreviewController.prototype.getFPS = function () {
return this.fps;
};
ns.AnimatedPreviewController.prototype.render = function (delta) {
this.elapsedTime += delta;
var index = Math.floor(this.elapsedTime / (1000/this.fps));
if (index != this.currentIndex) {
this.currentIndex = index;
if (!this.piskelController.hasFrameAt(this.currentIndex)) {
this.currentIndex = 0;
this.elapsedTime = 0;
}
this.renderer.render(this.piskelController.getFrameAt(this.currentIndex));
}
};
/**
* Calculate the preview DPI depending on the framesheet size
*/
ns.AnimatedPreviewController.prototype.calculateZoom_ = function () {
var previewSize = 200,
hZoom = previewSize / this.piskelController.getCurrentFrame().getHeight(),
wZoom = previewSize / this.piskelController.getCurrentFrame().getWidth();
return Math.min(hZoom, wZoom);
};
ns.AnimatedPreviewController.prototype.updateZoom_ = function () {
var zoom = this.calculateZoom_();
this.renderer.setZoom(zoom);
};
})();