Method-Draw/editor/src/select.js at master · codegician/Method-Draw · GitHub

History

605 lines (531 loc) · 16.9 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

/**

* Package: svedit.select

* Licensed under the Apache License, Version 2

// Dependencies:

// 1) jQuery

// 2) browser.js

// 3) math.js

// 4) svgutils.js

var svgedit = svgedit || {};

(function() {

if (!svgedit.select) {

svgedit.select = {};

}

var svgFactory_;

var config_;

var selectorManager_; // A Singleton

// Class: svgedit.select.Selector

// Private class for DOM element selection boxes

// Parameters:

// id - integer to internally indentify the selector

// elem - DOM element associated with this selector

svgedit.select.Selector = function(id, elem) {

// this is the selector's unique number

this.id = id;

// this holds a reference to the element for which this selector is being used

this.selectedElement = elem;

// this is a flag used internally to track whether the selector is being used or not

this.locked = true;

// this holds a reference to the <g> element that holds all visual elements of the selector

this.selectorGroup = svgFactory_.createSVGElement({

'element': 'g',

'attr': {'id': ('selectorGroup' + this.id)}

});

// this holds a reference to the path rect

this.selectorRect = this.selectorGroup.appendChild(

svgFactory_.createSVGElement({

'element': 'path',

'attr': {

'id': ('selectedBox' + this.id),

'fill': 'none',

'stroke': '#4F80FF',

'stroke-width': '1',

'shape-rendering': 'crispEdges',

'style': 'pointer-events:none'

}

})

);

if (svgedit.browser.isTouch()) {

this.selectorRect.setAttribute("stroke-opacity", 0.3);

}

// this holds a reference to the grip coordinates for this selector

this.gripCoords = {

'nw': null,

'n' : null,

'ne': null,

'e' : null,

'se': null,

's' : null,

'sw': null,

'w' : null

};

this.reset(this.selectedElement);

};

// Function: svgedit.select.Selector.reset

// Used to reset the id and element that the selector is attached to

// Parameters:

// e - DOM element associated with this selector

svgedit.select.Selector.prototype.reset = function(e) {

this.locked = true;

this.selectedElement = e;

this.resize();

this.selectorGroup.setAttribute('display', 'inline');

};

// Function: svgedit.select.Selector.updateGripCursors

// Updates cursors for corner grips on rotation so arrows point the right way

// Parameters:

// angle - Float indicating current rotation angle in degrees

svgedit.select.Selector.prototype.updateGripCursors = function(angle) {

var dir_arr = [];

var steps = Math.round(angle / 45);

if(steps < 0) steps += 8;

for (var dir in selectorManager_.selectorGrips) {

dir_arr.push(dir);

}

while(steps > 0) {

dir_arr.push(dir_arr.shift());

steps--;

}

var i = 0;

for (var dir in selectorManager_.selectorGrips) {

selectorManager_.selectorGrips[dir].setAttribute('style', ('cursor:' + dir_arr[i] + '-resize'));

i++;

};

// Function: svgedit.select.Selector.showGrips

// Show the resize grips of this selector

// Parameters:

// show - boolean indicating whether grips should be shown or not

svgedit.select.Selector.prototype.showGrips = function(show) {

var bShow = show ? 'inline' : 'none';

selectorManager_.selectorGripsGroup.setAttribute('display', bShow);

var elem = this.selectedElement;

this.hasGrips = show;

if(elem && show) {

this.selectorGroup.appendChild(selectorManager_.selectorGripsGroup);

this.updateGripCursors(svgedit.utilities.getRotationAngle(elem));

}

};

// Function: svgedit.select.Selector.resize

// Updates the selector to match the element's size

svgedit.select.Selector.prototype.resize = function() {

var selectedBox = this.selectorRect,

mgr = selectorManager_,

selectedGrips = mgr.selectorGrips,

selected = this.selectedElement,

sw = selected.getAttribute('stroke-width'),

current_zoom = svgFactory_.currentZoom();

var offset = 1/current_zoom;

if (selected.getAttribute('stroke') !== 'none' && !isNaN(sw)) {

offset += (sw/2);

}

var tagName = selected.tagName;

if (tagName === 'text') {

offset += 2/current_zoom;

}

// loop and transform our bounding box until we reach our first rotation

var tlist = svgedit.transformlist.getTransformList(selected);

var m = svgedit.math.transformListToTransform(tlist).matrix;

// This should probably be handled somewhere else, but for now

// it keeps the selection box correctly positioned when zoomed

m.e *= current_zoom;

m.f *= current_zoom;

var bbox = svgedit.utilities.getBBox(selected);

if(tagName === 'g' && !$.data(selected, 'gsvg')) {

// The bbox for a group does not include stroke vals, so we

// get the bbox based on its children.

var stroked_bbox = svgFactory_.getStrokedBBox(selected.childNodes);

if(stroked_bbox) {

bbox = stroked_bbox;

}

// apply the transforms

var l=bbox.x, t=bbox.y, w=bbox.width, h=bbox.height,

bbox = {x:l, y:t, width:w, height:h};

// we need to handle temporary transforms too

// if skewed, get its transformed box, then find its axis-aligned bbox

//*

offset *= current_zoom;

var nbox = svgedit.math.transformBox(l*current_zoom, t*current_zoom, w*current_zoom, h*current_zoom, m),

aabox = nbox.aabox,

nbax = aabox.x - offset,

nbay = aabox.y - offset,

nbaw = aabox.width + (offset * 2),

nbah = aabox.height + (offset * 2);

// now if the shape is rotated, un-rotate it

var cx = nbax + nbaw/2,

cy = nbay + nbah/2;

var angle = svgedit.utilities.getRotationAngle(selected);

if (angle) {

var rot = svgFactory_.svgRoot().createSVGTransform();

rot.setRotate(-angle,cx,cy);

var rotm = rot.matrix;

nbox.tl = svgedit.math.transformPoint(nbox.tl.x,nbox.tl.y,rotm);

nbox.tr = svgedit.math.transformPoint(nbox.tr.x,nbox.tr.y,rotm);

nbox.bl = svgedit.math.transformPoint(nbox.bl.x,nbox.bl.y,rotm);

nbox.br = svgedit.math.transformPoint(nbox.br.x,nbox.br.y,rotm);

// calculate the axis-aligned bbox

var tl = nbox.tl;

var minx = tl.x,

miny = tl.y,

maxx = tl.x,

maxy = tl.y;

var Min = Math.min, Max = Math.max;

minx = Min(minx, Min(nbox.tr.x, Min(nbox.bl.x, nbox.br.x) ) ) - offset;

miny = Min(miny, Min(nbox.tr.y, Min(nbox.bl.y, nbox.br.y) ) ) - offset;

maxx = Max(maxx, Max(nbox.tr.x, Max(nbox.bl.x, nbox.br.x) ) ) + offset;

maxy = Max(maxy, Max(nbox.tr.y, Max(nbox.bl.y, nbox.br.y) ) ) + offset;

nbax = minx;

nbay = miny;

nbaw = (maxx-minx);

nbah = (maxy-miny);

}

var dstr = 'M' + nbax + ',' + nbay

+ ' L' + (nbax+nbaw) + ',' + nbay

+ ' ' + (nbax+nbaw) + ',' + (nbay+nbah)

+ ' ' + nbax + ',' + (nbay+nbah) + 'z';

selectedBox.setAttribute('d', dstr);

var xform = angle ? 'rotate(' + [angle,cx,cy].join(',') + ')' : '';

this.selectorGroup.setAttribute('transform', xform);

if(svgedit.browser.isTouch()) {

nbax -= 15.75;

nbay -= 15.75;

}

else {

nbax -= 4;

nbay -= 4;

}

this.gripCoords = {

'nw': [nbax, nbay].map(Math.round),

'ne': [nbax+nbaw, nbay].map(Math.round),

'sw': [nbax, nbay+nbah].map(Math.round),

'se': [nbax+nbaw, nbay+nbah].map(Math.round),

'n': [nbax + (nbaw)/2, nbay].map(Math.round),

'w': [nbax, nbay + (nbah)/2].map(Math.round),

'e': [nbax + nbaw, nbay + (nbah)/2].map(Math.round),

's': [nbax + (nbaw)/2, nbay + nbah].map(Math.round)

};

for(var dir in this.gripCoords) {

var coords = this.gripCoords[dir];

selectedGrips[dir].setAttribute('x', coords[0]);

selectedGrips[dir].setAttribute('y', coords[1]);

};

this.rotateCoords = {

'nw': [nbax, nbay],

'ne': [nbax+nbaw+8, nbay],

'sw': [nbax, nbay+nbah+8],

'se': [nbax+nbaw+8, nbay+nbah+8]

};

for(var dir in this.rotateCoords) {

var coords = this.rotateCoords[dir];

mgr.rotateGrips[dir].setAttribute('cx', coords[0]);

mgr.rotateGrips[dir].setAttribute('cy', coords[1]);

}

};

// Class: svgedit.select.SelectorManager

svgedit.select.SelectorManager = function() {

// this will hold the <g> element that contains all selector rects/grips

this.selectorParentGroup = null;

// this is a special rect that is used for multi-select

this.rubberBandBox = null;

// this will hold objects of type svgedit.select.Selector (see above)

this.selectors = [];

// this holds a map of SVG elements to their Selector object

this.selectorMap = {};

// this holds a reference to the grip elements

this.selectorGrips = {

'nw': null,

'n' : null,

'ne': null,

'e' : null,

'se': null,

's' : null,

'sw': null,

'w' : null

};

this.selectorGripsGroup = null;

//this.rotateGripConnector = null;

this.rotateGrips = {

'nw': null,

'ne': null,

'se': null,

'sw': null

};

this.initGroup();

};

// Function: svgedit.select.SelectorManager.initGroup

// Resets the parent selector group element

svgedit.select.SelectorManager.prototype.initGroup = function() {

// remove old selector parent group if it existed

if (this.selectorParentGroup && this.selectorParentGroup.parentNode) {

this.selectorParentGroup.parentNode.removeChild(this.selectorParentGroup);

}

// create parent selector group and add it to svgroot

this.selectorParentGroup = svgFactory_.createSVGElement({

'element': 'g',

'attr': {'id': 'selectorParentGroup'}

});

this.selectorGripsGroup = svgFactory_.createSVGElement({

'element': 'g',

'attr': {'display': 'none'}

});

this.selectorParentGroup.appendChild(this.selectorGripsGroup);

svgFactory_.svgRoot().appendChild(this.selectorParentGroup);

this.selectorMap = {};

this.selectors = [];

this.rubberBandBox = null;

for (var dir in this.rotateGrips) {

var grip = svgFactory_.createSVGElement({

'element': 'circle',

'attr': {

'id': 'selectorGrip_rotate_' + dir,

'fill': '#000',

'r': 8,

'stroke': '#000',

"fill-opacity": 0,

"stroke-opacity": 0,

'stroke-width': 0,

'style': 'cursor:url(' + config_.imgPath + 'rotate.png) 12 12, auto;'

}

})

$.data(grip, 'dir', dir);

$.data(grip, 'type', 'rotate');

this.rotateGrips[dir] = this.selectorGripsGroup.appendChild(grip);

}

// add the corner grips

for (var dir in this.selectorGrips) {

var grip = svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'id': ('selectorGrip_resize_' + dir),

'width': 8,

'height': 8,

'fill': "#4F80FF",

'stroke': "rgba(0,0,0,0)",

'stroke-width': 1,

'style': ('cursor:' + dir + '-resize'),

'pointer-events': 'all'

}

});

if (svgedit.browser.isTouch()) {

grip.setAttribute("width", 30.5)

grip.setAttribute("height", 30.5)

grip.setAttribute("fill-opacity", 0.3)

}

$.data(grip, 'dir', dir);

$.data(grip, 'type', 'resize');

this.selectorGrips[dir] = this.selectorGripsGroup.appendChild(grip);

}

if($('#canvasBackground').length) return;

var dims = config_.dimensions;

var canvasbg = svgFactory_.createSVGElement({

'element': 'svg',

'attr': {

'id': 'canvasBackground',

'width': dims[0],

'height': dims[1],

'x': 0,

'y': 0,

'overflow': (svgedit.browser.isWebkit() ? 'none' : 'visible'), // Chrome 7 has a problem with this when zooming out

'style': 'pointer-events:none'

}

});

var defs = svgFactory_.createSVGElement({

'element': 'defs',

'attr': {

'id': 'placeholder_defs'

}

})

var pattern = svgFactory_.createSVGElement({

'element': 'pattern',

'attr': {

'id': 'checkerPattern',

'patternUnits': 'userSpaceOnUse',

'x': 0,

'y': 0,

'width': 20,

'height': 20,

'viewBox': '0 0 10 10'

}

})

var pattern_bg = svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'x': 0,

'y': 0,

'width': 10,

'height': 10,

'fill': "#fff"

}

})

var pattern_square1 = svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'x': 0,

'y': 0,

'width': 5,

'height': 5,

'fill': "#eee"

}

})

var pattern_square2 = svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'x': 5,

'y': 5,

'width': 5,

'height': 5,

'fill': "#eee"

}

})

var rect = svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'width': '100%',

'height': '100%',

'x': 0,

'y': 0,

'stroke-width': 1,

'stroke': '#000',

'fill': 'url(#checkerPattern)',

'style': 'pointer-events:none'

}

});

// Both Firefox and WebKit are too slow with this filter region (especially at higher

// zoom levels) and Opera has at least one bug

// if (!svgedit.browser.isOpera()) rect.setAttribute('filter', 'url(#canvashadow)');

canvasbg.appendChild(defs);

defs.appendChild(pattern);

pattern.appendChild(pattern_bg);

pattern.appendChild(pattern_square1);

pattern.appendChild(pattern_square2);

canvasbg.appendChild(rect);

svgFactory_.svgRoot().insertBefore(canvasbg, svgFactory_.svgContent());

};

// Function: svgedit.select.SelectorManager.requestSelector

// Returns the selector based on the given element

// Parameters:

// elem - DOM element to get the selector for

svgedit.select.SelectorManager.prototype.requestSelector = function(elem) {

if (elem == null) return null;

var N = this.selectors.length;

// If we've already acquired one for this element, return it.

if (typeof(this.selectorMap[elem.id]) == 'object') {

this.selectorMap[elem.id].locked = true;

return this.selectorMap[elem.id];

}

for (var i = 0; i < N; ++i) {

if (this.selectors[i] && !this.selectors[i].locked) {

this.selectors[i].locked = true;

this.selectors[i].reset(elem);

this.selectorMap[elem.id] = this.selectors[i];

return this.selectors[i];

}

// if we reached here, no available selectors were found, we create one

this.selectors[N] = new svgedit.select.Selector(N, elem);

this.selectorParentGroup.appendChild(this.selectors[N].selectorGroup);

this.selectorMap[elem.id] = this.selectors[N];

return this.selectors[N];

};

// Function: svgedit.select.SelectorManager.releaseSelector

// Removes the selector of the given element (hides selection box)

// Parameters:

// elem - DOM element to remove the selector for

svgedit.select.SelectorManager.prototype.releaseSelector = function(elem) {

if (elem == null) return;

var N = this.selectors.length,

sel = this.selectorMap[elem.id];

for (var i = 0; i < N; ++i) {

if (this.selectors[i] && this.selectors[i] == sel) {

if (sel.locked == false) {

// TODO(codedread): Ensure this exists in this module.

console.log('WARNING! selector was released but was already unlocked');

}

delete this.selectorMap[elem.id];

sel.locked = false;

sel.selectedElement = null;

sel.showGrips(false);

// remove from DOM and store reference in JS but only if it exists in the DOM

try {

sel.selectorGroup.setAttribute('display', 'none');

} catch(e) { }

break;

}

};

// Function: svgedit.select.SelectorManager.getRubberBandBox

// Returns the rubberBandBox DOM element. This is the rectangle drawn by the user for selecting/zooming

svgedit.select.SelectorManager.prototype.getRubberBandBox = function() {

if (!this.rubberBandBox) {

this.rubberBandBox = this.selectorParentGroup.appendChild(

svgFactory_.createSVGElement({

'element': 'rect',

'attr': {

'id': 'selectorRubberBand',

'fill': 'none',

'stroke': '#666',

'stroke-width': 1,

'stroke-dasharray': '3,2',

'display': 'none',

'style': 'pointer-events:none'

}

})

);

}

return this.rubberBandBox;

};

/**

* Interface: svgedit.select.SVGFactory

* An object that creates SVG elements for the canvas.

* interface svgedit.select.SVGFactory {

* SVGElement createSVGElement(jsonMap);

* SVGSVGElement svgRoot();

* SVGSVGElement svgContent();

* Number currentZoom();

* Object getStrokedBBox(Element[]); // TODO(codedread): Remove when getStrokedBBox() has been put into svgutils.js

* }

/**

* Function: svgedit.select.init()

* Initializes this module.

* Parameters:

* config - an object containing configurable parameters (imgPath)

* svgFactory - an object implementing the SVGFactory interface (see above).

svgedit.select.init = function(config, svgFactory) {

config_ = config;

svgFactory_ = svgFactory;

selectorManager_ = new svgedit.select.SelectorManager();

//for hovering elements

svgFactory_.createSVGElement({

'element': 'g',

'attr': {

'id': 'hover_group'

}

})

};

/**

* Function: svgedit.select.getSelectorManager

* Returns:

* The SelectorManager instance.

svgedit.select.getSelectorManager = function() {

return selectorManager_;

};

})();

Method-Draw/editor/src/select.js at master · codegician/Method-Draw · GitHub

Expand file tree

Breadcrumbs

select.js

Latest commit

History

Breadcrumbs

select.js

File metadata and controls