path: root/js/tools/BrushTool.js

/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
</copyright> */

var ShapeTool = require("js/tools/ShapeTool").ShapeTool;
var DrawingToolBase = require("js/tools/drawing-tool-base").DrawingToolBase;
var defaultEventManager = require("montage/core/event/event-manager").defaultEventManager;
var Montage = require("montage/core/core").Montage;
var NJUtils = require("js/lib/NJUtils").NJUtils;
var ElementMediator = require("js/mediators/element-mediator").ElementMediator;
var TagTool = require("js/tools/TagTool").TagTool;
var snapManager = require("js/helper-classes/3D/snap-manager").SnapManager;

exports.BrushTool = Montage.create(ShapeTool, {
    hasReel: { value: false },
        _toolID: { value: "brushTool" },
        _imageID: { value: "brushToolImg" },
        _toolImageClass: { value: "brushToolUp" },
        _selectedToolImageClass: { value: "brushToolDown" },
        _toolTipText: { value: "Brush Tool" },
        _brushView: { value: null, writable: true },

        _selectedToolClass: { value: "brushToolSpecificProperties" },
        _penToolProperties: { enumerable: false, value: null, writable: true },
        _parentNode: { enumerable: false, value: null, writable: true },
        _toolsPropertiesContainer: { enumerable: false, value: null, writable: true },

        //config options
        _useWebGL: {value: false, writable: false},

        //view options
        _brushStrokeCanvas: {value: null, writable: true},
        _brushStrokePlaneMat: {value: null, writable: true},

        //the current brush stroke
        _selectedBrushStroke: {value: null, writable: true},

        ShowToolProperties: {
            value: function () {
                this._brushView = PenView.create();
                this._brushView.element = document.getElementById('topPanelContainer').children[0];
                this._brushView.needsDraw = true;
                this._brushView.addEventListener(ToolEvents.TOOL_OPTION_CHANGE, this, false);
            }
        },

        HandleLeftButtonDown: {
            value: function (event) {
                //ignore any right or middle clicks
                if (event.button !== 0) {
                   //NOTE: this will work on Webkit only...IE has different codes (left: 1, middle: 4, right: 2)
                   return;
                }
                if (this._canDraw) {
                   this._isDrawing = true;
                }

                this.startDraw(event);
                if (this._brushStrokePlaneMat === null) {
                    this._brushStrokePlaneMat = this.mouseDownHitRec.getPlaneMatrix();
                }
                //start a new brush stroke
                if (this._selectedBrushStroke === null){
                    this._selectedBrushStroke = new GLBrushStroke();
                }
                NJevent("enableStageMove");//stageManagerModule.stageManager.enableMouseMove();
            } //value: function (event) {
        }, //HandleLeftButtonDown

        _getUnsnappedPosition: {
            value: function(x,y){
                var elemSnap = snapManager.elementSnapEnabled();
                var gridSnap = snapManager.gridSnapEnabled();
                var alignSnap = snapManager.snapAlignEnabled();

                snapManager.enableElementSnap(false);
                snapManager.enableGridSnap(false);
                snapManager.enableSnapAlign(false);

                var point = webkitConvertPointFromPageToNode(this.application.ninja.stage.canvas, new WebKitPoint(x,y));
                var unsnappedpos = DrawingToolBase.getHitRecPos(snapManager.snap(point.x, point.y, false));

                snapManager.enableElementSnap(elemSnap);
                snapManager.enableGridSnap(gridSnap);
                snapManager.enableSnapAlign(alignSnap);

                return unsnappedpos;
            }
        },
        //need to override this function because the ShapeTool's definition contains a clearDrawingCanvas call  - Pushkar
        //  might not need to override once we draw using OpenGL instead of SVG
        // Also took out all the snapping code for now...need to add that back
        HandleMouseMove:
        {
            value: function (event) {
                //ignore any right or middle clicks
                if (event.button !== 0) {
                   //NOTE: this will work on Webkit only...IE has different codes (left: 1, middle: 4, right: 2)
                   return;
                }

                if (this._isDrawing) {
                    var currMousePos = this._getUnsnappedPosition(event.pageX, event.pageY);
                    if (this._selectedBrushStroke){
                       this._selectedBrushStroke.addPoint(currMousePos);
                    }
                    this.ShowCurrentBrushStrokeOnStage();
                } //if (this._isDrawing) {

                //this.drawLastSnap();        //TODO.. is this line necessary if we're not snapping? // Required cleanup for both Draw/Feedbacks

           }//value: function(event)
        },



        HandleLeftButtonUp: {
            value: function (event) {
                /*var drawData = this.getDrawingData();
                if (drawData) {
                    if (this._brushStrokePlaneMat === null) {
                        this._brushStrokePlaneMat = drawData.planeMat;
                    }
                }
                if (this._isDrawing) {
                   this.doDraw(event);
                }*/
                this.endDraw(event);

                this._isDrawing = false;
                this._hasDraw = false;

                //TODO get these values from the options
                if (this._selectedBrushStroke){
                    this._selectedBrushStroke.setStrokeWidth(20);
                }
                //display the previously drawn stroke in a separate canvas
                this.RenderCurrentBrushStroke();

                this._selectedBrushStroke = null;
                this._brushStrokeCanvas = null;
                NJevent("disableStageMove");
            }
        },

        ShowCurrentBrushStrokeOnStage:{
            value: function() {
                //clear the canvas before we draw anything else
                this.application.ninja.stage.clearDrawingCanvas();
                if (this._selectedBrushStroke && this._selectedBrushStroke.getNumPoints()>0){
                    this._selectedBrushStroke.computeMetaGeometry();
                    var ctx = this.application.ninja.stage.drawingContext;//stageManagerModule.stageManager.drawingContext;
                    if (ctx === null)
                        throw ("null drawing context in Brushtool::ShowCurrentBrushStrokeOnStage");
                    ctx.save();

                    var horizontalOffset = this.application.ninja.stage.userContentLeft;
                    var verticalOffset = this.application.ninja.stage.userContentTop;

                    var numPoints = this._selectedBrushStroke.getNumPoints();
                    ctx.lineWidth = 1;
                    ctx.strokeStyle = "black";
                    ctx.beginPath();
                    var pt = this._selectedBrushStroke.getPoint(0);
                    ctx.moveTo(pt[0]+ horizontalOffset,pt[1]+ verticalOffset);
                    for (var i = 1; i < numPoints; i++) {
                        pt = this._selectedBrushStroke.getPoint(i);
                        var x = pt[0]+ horizontalOffset;
                        var y = pt[1]+ verticalOffset;
                        ctx.lineTo(x,y);
                    }
                    ctx.stroke();
                    ctx.restore();

                }
            }
        },

        RenderCurrentBrushStroke:{
            value: function() {
                if (this._selectedBrushStroke){
                    this._selectedBrushStroke.computeMetaGeometry();
                    var bboxMin = this._selectedBrushStroke.getBBoxMin();
                    var bboxMax = this._selectedBrushStroke.getBBoxMax();
                    var bboxWidth = bboxMax[0] - bboxMin[0];
                    var bboxHeight = bboxMax[1] - bboxMin[1];
                    var bboxMid = Vector.create([0.5 * (bboxMax[0] + bboxMin[0]), 0.5 * (bboxMax[1] + bboxMin[1]), 0.5 * (bboxMax[2] + bboxMin[2])]);

                    this._selectedBrushStroke.setCanvasX(bboxMid[0]);
                    this._selectedBrushStroke.setCanvasY(bboxMid[1]);

                    //call render shape with the bbox width and height
                    this.RenderShape(bboxWidth, bboxHeight, this._brushStrokePlaneMat, bboxMid, this._brushStrokeCanvas);
                }
            }
        },


        RenderShape: {
            value: function (w, h, planeMat, midPt, canvas) {
                if ((Math.floor(w) === 0) || (Math.floor(h) === 0)) {
                    return;
                }

                var left = Math.round(midPt[0] - 0.5 * w);
                var top = Math.round(midPt[1] - 0.5 * h);

                if (!canvas) {
                var newCanvas = NJUtils.makeNJElement("canvas", "Brushstroke", "shape", {"data-RDGE-id": NJUtils.generateRandom()}, true);
                    var elementModel = TagTool.makeElement(w, h, planeMat, midPt, newCanvas);
                    ElementMediator.addElement(newCanvas, elementModel.data, true);

                    // create all the GL stuff
                    var world = this.getGLWorld(newCanvas, this._useWebGL);
                    //store a reference to this newly created canvas
                    this._brushStrokeCanvas = newCanvas;

                    var brushStroke = this._selectedBrushStroke;
                    if (brushStroke){
                        brushStroke.setWorld(world);

                        brushStroke.setPlaneMatrix(planeMat);
                        var planeMatInv = glmat4.inverse( planeMat, [] );
                        brushStroke.setPlaneMatrixInverse(planeMatInv);
                        brushStroke.setPlaneCenter(midPt);

                        world.addObject(brushStroke);
                        world.render();
                        //TODO this will not work if there are multiple shapes in the same canvas
                        newCanvas.elementModel.shapeModel.GLGeomObj = brushStroke;
                    }
                } //if (!canvas) {
                else {

                    var world = null;
                    if (canvas.elementModel.shapeModel && canvas.elementModel.shapeModel.GLWorld) {
                        world = canvas.elementModel.shapeModel.GLWorld;
                    } else {
                        world = this.getGLWorld(canvas, this._useWebGL);
                    }


                    if (this._entryEditMode !== this.ENTRY_SELECT_CANVAS){
                        //update the left and top of the canvas element
                        var canvasArray=[canvas];
                        ElementMediator.setProperty(canvasArray, "left", [parseInt(left)+"px"],"Changing", "brushTool");
                        ElementMediator.setProperty(canvasArray, "top", [parseInt(top) + "px"],"Changing", "brushTool");
                        canvas.width = w;
                        canvas.height = h;
                        //update the viewport and projection to reflect the new canvas width and height
                        world.setViewportFromCanvas(canvas);
                        if (this._useWebGL){
                            var cam = world.renderer.cameraManager().getActiveCamera();
                            cam.setPerspective(world.getFOV(), world.getAspect(), world.getZNear(), world.getZFar());
                        }
                    }

                    var brushStroke = this._selectedBrushStroke;

                    if (brushStroke){
                        brushStroke.setDrawingTool(this);

                        brushStroke.setPlaneMatrix(planeMat);
                        var planeMatInv = glmat4.inverse( planeMat, [] );
                        brushStroke.setPlaneMatrixInverse(planeMatInv);
                        brushStroke.setPlaneCenter(midPt);

                        brushStroke.setWorld(world);
                        world.addIfNewObject(brushStroke);
                        //world.addObject(subpath);
                        world.render();
                        //TODO this will not work if there are multiple shapes in the same canvas
                        canvas.elementModel.shapeModel.GLGeomObj = brushStroke;
                    }
                } //else of if (!canvas) {
            } //value: function (w, h, planeMat, midPt, canvas) {
        }, //RenderShape: {
    
        Configure: {
            value: function (wasSelected) {
                if (wasSelected) {
                    console.log("Entered BrushTool");
                }
                else {
                    console.log("Left BrushTool");
                }
            }
        }

});