piskel/js/controller/PreviewFilmController.js

220 lines
7.9 KiB
JavaScript

(function () {
var ns = $.namespace("pskl.controller");
ns.PreviewFilmController = function (piskelController, container, dpi) {
this.piskelController = piskelController;
this.container = container;
this.dpi = this.calculateDPI_();
this.redrawFlag = true;
};
ns.PreviewFilmController.prototype.init = function() {
$.subscribe(Events.TOOL_RELEASED, this.flagForRedraw_.bind(this));
$.subscribe(Events.PISKEL_RESET, this.flagForRedraw_.bind(this));
$.subscribe(Events.PISKEL_RESET, this.refreshDPI_.bind(this));
$('#preview-list-scroller').scroll(this.updateScrollerOverflows.bind(this));
this.updateScrollerOverflows();
};
ns.PreviewFilmController.prototype.addFrame = function () {
this.piskelController.addEmptyFrame();
this.piskelController.setCurrentFrameIndex(this.piskelController.getFrameCount() - 1);
this.updateScrollerOverflows();
};
ns.PreviewFilmController.prototype.flagForRedraw_ = function () {
this.redrawFlag = true;
};
ns.PreviewFilmController.prototype.refreshDPI_ = function () {
this.dpi = this.calculateDPI_();
};
ns.PreviewFilmController.prototype.render = function () {
if (this.redrawFlag) {
// TODO(vincz): Full redraw on any drawing modification, optimize.
this.createPreviews_();
this.redrawFlag = false;
}
};
ns.PreviewFilmController.prototype.updateScrollerOverflows = function () {
var scroller = $('#preview-list-scroller');
var scrollerHeight = scroller.height();
var scrollTop = scroller.scrollTop();
var scrollerContentHeight = $('#preview-list').height();
var treshold = $('.top-overflow').height();
var overflowTop = false,
overflowBottom = false;
if (scrollerHeight < scrollerContentHeight) {
if (scrollTop > treshold) {
overflowTop = true;
}
var scrollBottom = (scrollerContentHeight - scrollTop) - scrollerHeight;
if (scrollBottom > treshold) {
overflowBottom = true;
}
}
var wrapper = $('#preview-list-wrapper');
wrapper.toggleClass('top-overflow-visible', overflowTop);
wrapper.toggleClass('bottom-overflow-visible', overflowBottom);
};
ns.PreviewFilmController.prototype.createPreviews_ = function () {
this.container.html("");
// Manually remove tooltips since mouseout events were shortcut by the DOM refresh:
$(".tooltip").remove();
var frameCount = this.piskelController.getFrameCount();
for (var i = 0, l = frameCount; i < l ; i++) {
this.container.append(this.createPreviewTile_(i));
}
// Append 'new empty frame' button
var newFrameButton = document.createElement("div");
newFrameButton.id = "add-frame-action";
newFrameButton.className = "add-frame-action";
newFrameButton.innerHTML = "<p class='label'>Add new frame</p>";
this.container.append(newFrameButton);
$(newFrameButton).click(this.addFrame.bind(this));
var needDragndropBehavior = (frameCount > 1);
if(needDragndropBehavior) {
this.initDragndropBehavior_();
}
this.updateScrollerOverflows();
};
/**
* @private
*/
ns.PreviewFilmController.prototype.initDragndropBehavior_ = function () {
$("#preview-list").sortable({
placeholder: "preview-tile-drop-proxy",
update: $.proxy(this.onUpdate_, this),
items: ".preview-tile"
});
$("#preview-list").disableSelection();
};
/**
* @private
*/
ns.PreviewFilmController.prototype.onUpdate_ = function( event, ui ) {
var originFrameId = parseInt(ui.item.data("tile-number"), 10);
var targetInsertionId = $('.preview-tile').index(ui.item);
this.piskelController.moveFrame(originFrameId, targetInsertionId);
this.piskelController.setCurrentFrameIndex(targetInsertionId);
// TODO(grosbouddha): move localstorage request to the model layer?
$.publish(Events.LOCALSTORAGE_REQUEST);
};
/**
* @private
* TODO(vincz): clean this giant rendering function & remove listeners.
*/
ns.PreviewFilmController.prototype.createPreviewTile_ = function(tileNumber) {
var currentFrame = this.piskelController.getCurrentLayer().getFrameAt(tileNumber);
var previewTileRoot = document.createElement("li");
var classname = "preview-tile";
previewTileRoot.setAttribute("data-tile-number", tileNumber);
if (this.piskelController.getCurrentFrame() == currentFrame) {
classname += " selected";
}
previewTileRoot.className = classname;
var canvasContainer = document.createElement("div");
canvasContainer.className = "canvas-container";
var canvasBackground = document.createElement("div");
canvasBackground.className = "canvas-background";
canvasContainer.appendChild(canvasBackground);
previewTileRoot.addEventListener('click', this.onPreviewClick_.bind(this, tileNumber));
var cloneFrameButton = document.createElement("button");
cloneFrameButton.setAttribute('rel', 'tooltip');
cloneFrameButton.setAttribute('data-placement', 'right');
cloneFrameButton.setAttribute('title', 'Duplicate this frame');
cloneFrameButton.className = "tile-overlay duplicate-frame-action";
previewTileRoot.appendChild(cloneFrameButton);
cloneFrameButton.addEventListener('click', this.onAddButtonClick_.bind(this, tileNumber));
// TODO(vincz): Eventually optimize this part by not recreating a FrameRenderer. Note that the real optim
// is to make this update function (#createPreviewTile) less aggressive.
var renderingOptions = {"dpi": this.dpi };
var currentFrameRenderer = new pskl.rendering.FrameRenderer($(canvasContainer), renderingOptions, ["tile-view"]);
currentFrameRenderer.render(currentFrame);
previewTileRoot.appendChild(canvasContainer);
if(tileNumber > 0 || this.piskelController.getFrameCount() > 1) {
// Add 'remove frame' button.
var deleteButton = document.createElement("button");
deleteButton.setAttribute('rel', 'tooltip');
deleteButton.setAttribute('data-placement', 'right');
deleteButton.setAttribute('title', 'Delete this frame');
deleteButton.className = "tile-overlay delete-frame-action";
deleteButton.addEventListener('click', this.onDeleteButtonClick_.bind(this, tileNumber));
previewTileRoot.appendChild(deleteButton);
// Add 'dragndrop handle'.
var dndHandle = document.createElement("div");
dndHandle.className = "tile-overlay dnd-action";
previewTileRoot.appendChild(dndHandle);
}
var tileCount = document.createElement("div");
tileCount.className = "tile-overlay tile-count";
tileCount.innerHTML = tileNumber;
previewTileRoot.appendChild(tileCount);
return previewTileRoot;
};
ns.PreviewFilmController.prototype.onPreviewClick_ = function (index, evt) {
// has not class tile-action:
if(!evt.target.classList.contains('tile-overlay')) {
this.piskelController.setCurrentFrameIndex(index);
}
};
ns.PreviewFilmController.prototype.onDeleteButtonClick_ = function (index, evt) {
this.piskelController.removeFrameAt(index);
$.publish(Events.LOCALSTORAGE_REQUEST); // Should come from model
this.updateScrollerOverflows();
};
ns.PreviewFilmController.prototype.onAddButtonClick_ = function (index, evt) {
this.piskelController.duplicateFrameAt(index);
$.publish(Events.LOCALSTORAGE_REQUEST); // Should come from model
this.piskelController.setCurrentFrameIndex(index + 1);
this.updateScrollerOverflows();
};
/**
* Calculate the preview DPI depending on the piskel size
*/
ns.PreviewFilmController.prototype.calculateDPI_ = function () {
var curFrame = this.piskelController.getCurrentFrame(),
frameHeight = curFrame.getHeight(),
frameWidth = curFrame.getWidth(),
maxFrameDim = Math.max(frameWidth, frameHeight);
var previewHeight = Constants.PREVIEW_FILM_SIZE * frameHeight / maxFrameDim;
var previewWidth = Constants.PREVIEW_FILM_SIZE * frameWidth / maxFrameDim;
return pskl.PixelUtils.calculateDPI(previewHeight, previewWidth, frameHeight, frameWidth) || 1;
};
})();