piskel/js/selection/SelectionManager.js

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(function () {
var ns = $.namespace("pskl.selection");
ns.SelectionManager = function (framesheet) {
this.framesheet = framesheet;
this.currentSelection = null;
};
ns.SelectionManager.prototype.init = function () {
$.subscribe(Events.SELECTION_CREATED, $.proxy(this.onSelectionCreated_, this));
$.subscribe(Events.SELECTION_DISMISSED, $.proxy(this.onSelectionDismissed_, this));
$.subscribe(Events.SELECTION_MOVE_REQUEST, $.proxy(this.onSelectionMoved_, this));
$.subscribe(Events.PASTE, $.proxy(this.onPaste_, this));
$.subscribe(Events.COPY, $.proxy(this.onCopy_, this));
$.subscribe(Events.CUT, $.proxy(this.onCut_, this));
$.subscribe(Events.TOOL_SELECTED, $.proxy(this.onToolSelected_, this));
};
/**
* @private
*/
ns.SelectionManager.prototype.cleanSelection_ = function() {
if(this.currentSelection) {
this.currentSelection.reset();
}
};
/**
* @private
*/
ns.SelectionManager.prototype.onToolSelected_ = function(evt, tool) {
var isSelectionTool = tool instanceof pskl.drawingtools.BaseSelect;
if(!isSelectionTool) {
this.cleanSelection_();
}
};
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/**
* @private
*/
ns.SelectionManager.prototype.onSelectionDismissed_ = function(evt) {
this.cleanSelection_();
};
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/**
* @private
*/
ns.SelectionManager.prototype.onCut_ = function(evt) {
if(this.currentSelection) {
// Put cut target into the selection:
this.currentSelection.fillSelectionFromFrame(this.framesheet.getCurrentFrame());
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var pixels = this.currentSelection.pixels;
var currentFrame = this.framesheet.getCurrentFrame();
for(var i=0, l=pixels.length; i<l; i++) {
try {
currentFrame.setPixel(pixels[i].col, pixels[i].row, Constants.TRANSPARENT_COLOR);
}
catch(e) {
// Catchng out of frame's bound pixels without testing
}
}
}
else {
throw "Bad state for CUT callback in SelectionManager";
}
};
ns.SelectionManager.prototype.onPaste_ = function(evt) {
if(this.currentSelection && this.currentSelection.hasPastedContent) {
var pixels = this.currentSelection.pixels;
var currentFrame = this.framesheet.getCurrentFrame();
for(var i=0, l=pixels.length; i<l; i++) {
try {
currentFrame.setPixel(
pixels[i].col, pixels[i].row,
pixels[i].copiedColor);
}
catch(e) {
// Catchng out of frame's bound pixels without testing
}
}
}
};
/**
* @private
*/
ns.SelectionManager.prototype.onCopy_ = function(evt) {
if(this.currentSelection && this.framesheet.getCurrentFrame()) {
this.currentSelection.fillSelectionFromFrame(this.framesheet.getCurrentFrame());
}
else {
throw "Bad state for CUT callback in SelectionManager";
}
};
/**
* @private
*/
ns.SelectionManager.prototype.onSelectionCreated_ = function(evt, selection) {
if(selection) {
this.currentSelection = selection;
} else {
throw "No selection set in SelectionManager";
}
};
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/**
* @private
*/
ns.SelectionManager.prototype.onSelectionMoved_ = function(evt, colDiff, rowDiff) {
if(this.currentSelection) {
this.currentSelection.move(colDiff, rowDiff);
}
else {
throw "Bad state: No currentSelection set when trying to move it in SelectionManager";
}
};
})();