cefpython/src/subprocess/print_handler_gtk.cpp at cefpython52 · pythonthings/cefpython · GitHub

Repository navigation

History

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

// COPIED from upstream cef/tests/cefclient/browser/

// with minor modifications.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

#include "print_handler_gtk.h"

#include <vector>

#include "include/base/cef_logging.h"

#include "include/base/cef_macros.h"

#include "include/wrapper/cef_helpers.h"

namespace {

// CUPS Duplex attribute and values.

const char kCUPSDuplex[] = "cups-Duplex";

const char kDuplexNone[] = "None";

const char kDuplexTumble[] = "DuplexTumble";

const char kDuplexNoTumble[] = "DuplexNoTumble";

// CUPS color mode attribute and values.

const char kCUPSColorMode[] = "cups-ColorMode";

const char kCUPSColorModel[] = "cups-ColorModel";

const char kCUPSPrintoutMode[] = "cups-PrintoutMode";

const char kCUPSProcessColorModel[] = "cups-ProcessColorModel";

const char kBlack[] = "Black";

const char kCMYK[] = "CMYK";

const char kCMY_K[] = "CMY+K";

const char kCMY[] = "CMY";

const char kColor[] = "Color";

const char kGray[] = "Gray";

const char kGrayscale[] = "Grayscale";

const char kGreyscale[] = "Greyscale";

const char kMonochrome[] = "Monochrome";

const char kNormal[] = "Normal";

const char kNormalGray[] = "Normal.Gray";

const char kRGB[] = "RGB";

const char kRGBA[] = "RGBA";

const char kRGB16[] = "RGB16";

// Default margin settings.

const double kTopMarginInInch = 0.25;

const double kBottomMarginInInch = 0.56;

const double kLeftMarginInInch = 0.25;

const double kRightMarginInInch = 0.25;

// Length of an inch in CSS's 1px unit.

// http://dev.w3.org/csswg/css3-values/#the-px-unit

const int kPixelsPerInch = 96;

// LETTER: 8.5 x 11 inches

const float kLetterWidthInch = 8.5f;

const float kLetterHeightInch = 11.0f;

class StickyPrintSettingGtk {

public:

StickyPrintSettingGtk() : last_used_settings_(gtk_print_settings_new()) {

}

~StickyPrintSettingGtk() {

NOTREACHED(); // The instance is intentionally leaked.

}

GtkPrintSettings* settings() {

return last_used_settings_;

}

void SetLastUsedSettings(GtkPrintSettings* settings) {

DCHECK(last_used_settings_);

g_object_unref(last_used_settings_);

last_used_settings_ = gtk_print_settings_copy(settings);

}

private:

GtkPrintSettings* last_used_settings_;

DISALLOW_COPY_AND_ASSIGN(StickyPrintSettingGtk);

};

// Lazily initialize the singleton instance.

StickyPrintSettingGtk* GetLastUsedSettings() {

static StickyPrintSettingGtk* settings = NULL;

if (!settings)

settings = new StickyPrintSettingGtk();

return settings;

}

// Helper class to track GTK printers.

class GtkPrinterList {

public:

GtkPrinterList() : default_printer_(NULL) {

gtk_enumerate_printers(SetPrinter, this, NULL, TRUE);

}

~GtkPrinterList() {

for (std::vector<GtkPrinter*>::iterator it = printers_.begin();

it < printers_.end(); ++it) {

g_object_unref(*it);

}

// Can return NULL if there's no default printer. E.g. Printer on a laptop

// is "home_printer", but the laptop is at work.

GtkPrinter* default_printer() {

return default_printer_;

}

// Can return NULL if the printer cannot be found due to:

// - Printer list out of sync with printer dialog UI.

// - Querying for non-existant printers like 'Print to PDF'.

GtkPrinter* GetPrinterWithName(const std::string& name) {

if (name.empty())

return NULL;

for (std::vector<GtkPrinter*>::iterator it = printers_.begin();

it < printers_.end(); ++it) {

if (gtk_printer_get_name(*it) == name) {

return *it;

}

return NULL;

}

private:

// Callback function used by gtk_enumerate_printers() to get all printer.

static gboolean SetPrinter(GtkPrinter* printer, gpointer data) {

GtkPrinterList* printer_list = reinterpret_cast<GtkPrinterList*>(data);

if (gtk_printer_is_default(printer))

printer_list->default_printer_ = printer;

g_object_ref(printer);

printer_list->printers_.push_back(printer);

return FALSE;

}

std::vector<GtkPrinter*> printers_;

GtkPrinter* default_printer_;

};

void GetColorModelForMode(CefPrintSettings::ColorModel color_mode,

std::string* color_setting_name,

std::string* color_value) {

color_setting_name->assign(kCUPSColorModel);

switch (color_mode) {

case COLOR_MODEL_COLOR:

color_value->assign(kColor);

break;

case COLOR_MODEL_CMYK:

color_value->assign(kCMYK);

break;

case COLOR_MODEL_PRINTOUTMODE_NORMAL:

color_value->assign(kNormal);

color_setting_name->assign(kCUPSPrintoutMode);

break;

case COLOR_MODEL_PRINTOUTMODE_NORMAL_GRAY:

color_value->assign(kNormalGray);

color_setting_name->assign(kCUPSPrintoutMode);

break;

case COLOR_MODEL_RGB16:

color_value->assign(kRGB16);

break;

case COLOR_MODEL_RGBA:

color_value->assign(kRGBA);

break;

case COLOR_MODEL_RGB:

color_value->assign(kRGB);

break;

case COLOR_MODEL_CMY:

color_value->assign(kCMY);

break;

case COLOR_MODEL_CMY_K:

color_value->assign(kCMY_K);

break;

case COLOR_MODEL_BLACK:

color_value->assign(kBlack);

break;

case COLOR_MODEL_GRAY:

color_value->assign(kGray);

break;

case COLOR_MODEL_COLORMODE_COLOR:

color_setting_name->assign(kCUPSColorMode);

color_value->assign(kColor);

break;

case COLOR_MODEL_COLORMODE_MONOCHROME:

color_setting_name->assign(kCUPSColorMode);

color_value->assign(kMonochrome);

break;

case COLOR_MODEL_HP_COLOR_COLOR:

color_setting_name->assign(kColor);

color_value->assign(kColor);

break;

case COLOR_MODEL_HP_COLOR_BLACK:

color_setting_name->assign(kColor);

color_value->assign(kBlack);

break;

case COLOR_MODEL_PROCESSCOLORMODEL_CMYK:

color_setting_name->assign(kCUPSProcessColorModel);

color_value->assign(kCMYK);

break;

case COLOR_MODEL_PROCESSCOLORMODEL_GREYSCALE:

color_setting_name->assign(kCUPSProcessColorModel);

color_value->assign(kGreyscale);

break;

case COLOR_MODEL_PROCESSCOLORMODEL_RGB:

color_setting_name->assign(kCUPSProcessColorModel);

color_value->assign(kRGB);

break;

default:

color_value->assign(kGrayscale);

break;

}

void InitPrintSettings(GtkPrintSettings* settings,

GtkPageSetup* page_setup,

CefRefPtr<CefPrintSettings> print_settings) {

DCHECK(settings);

DCHECK(page_setup);

std::string device_name;

const gchar* name = gtk_print_settings_get_printer(settings);

if (name)

device_name = name;

print_settings->SetDeviceName(device_name);

CefSize physical_size_device_units;

CefRect printable_area_device_units;

int dpi = gtk_print_settings_get_resolution(settings);

if (dpi) {

// Initialize page_setup_device_units_.

physical_size_device_units.Set(

gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH) * dpi,

gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH) * dpi);

printable_area_device_units.Set(

gtk_page_setup_get_left_margin(page_setup, GTK_UNIT_INCH) * dpi,

gtk_page_setup_get_top_margin(page_setup, GTK_UNIT_INCH) * dpi,

gtk_page_setup_get_page_width(page_setup, GTK_UNIT_INCH) * dpi,

gtk_page_setup_get_page_height(page_setup, GTK_UNIT_INCH) * dpi);

} else {

// Use default values if we cannot get valid values from the print dialog.

dpi = kPixelsPerInch;

double page_width_in_pixel = kLetterWidthInch * dpi;

double page_height_in_pixel = kLetterHeightInch * dpi;

physical_size_device_units.Set(

static_cast<int>(page_width_in_pixel),

static_cast<int>(page_height_in_pixel));

printable_area_device_units.Set(

static_cast<int>(kLeftMarginInInch * dpi),

static_cast<int>(kTopMarginInInch * dpi),

page_width_in_pixel - (kLeftMarginInInch + kRightMarginInInch) * dpi,

page_height_in_pixel - (kTopMarginInInch + kBottomMarginInInch) * dpi);

}

print_settings->SetDPI(dpi);

// Note: With the normal GTK print dialog, when the user selects the landscape

// orientation, all that does is change the paper size. Which seems to be

// enough to render the right output and send it to the printer.

// The orientation value stays as portrait and does not actually affect

// printing.

// Thus this is only useful in print preview mode, where we manually set the

// orientation and change the paper size ourselves.

GtkPageOrientation orientation = gtk_print_settings_get_orientation(settings);

// Set before SetPrinterPrintableArea to make it flip area if necessary.

print_settings->SetOrientation(orientation == GTK_PAGE_ORIENTATION_LANDSCAPE);

print_settings->SetPrinterPrintableArea(physical_size_device_units,

printable_area_device_units,

true);

}

} // namespace

ClientPrintHandlerGtk::ClientPrintHandlerGtk()

: dialog_(NULL),

gtk_settings_(NULL),

page_setup_(NULL),

printer_(NULL) {

}

void ClientPrintHandlerGtk::OnPrintStart(CefRefPtr<CefBrowser> browser) {

}

void ClientPrintHandlerGtk::OnPrintSettings(

CefRefPtr<CefPrintSettings> settings,

bool get_defaults) {

if (get_defaults) {

DCHECK(!page_setup_);

DCHECK(!printer_);

// |gtk_settings_| is a new copy.

gtk_settings_ =

gtk_print_settings_copy(GetLastUsedSettings()->settings());

page_setup_ = gtk_page_setup_new();

} else {

if (!gtk_settings_) {

gtk_settings_ =

gtk_print_settings_copy(GetLastUsedSettings()->settings());

}

GtkPrinterList* printer_list = new GtkPrinterList;

printer_ = printer_list->GetPrinterWithName(settings->GetDeviceName());

if (printer_) {

g_object_ref(printer_);

gtk_print_settings_set_printer(gtk_settings_,

gtk_printer_get_name(printer_));

if (!page_setup_) {

page_setup_ = gtk_printer_get_default_page_size(printer_);

}

gtk_print_settings_set_n_copies(gtk_settings_, settings->GetCopies());

gtk_print_settings_set_collate(gtk_settings_, settings->WillCollate());

std::string color_value;

std::string color_setting_name;

GetColorModelForMode(settings->GetColorModel(), &color_setting_name,

&color_value);

gtk_print_settings_set(gtk_settings_, color_setting_name.c_str(),

color_value.c_str());

if (settings->GetDuplexMode() != DUPLEX_MODE_UNKNOWN) {

const char* cups_duplex_mode = NULL;

switch (settings->GetDuplexMode()) {

case DUPLEX_MODE_LONG_EDGE:

cups_duplex_mode = kDuplexNoTumble;

break;

case DUPLEX_MODE_SHORT_EDGE:

cups_duplex_mode = kDuplexTumble;

break;

case DUPLEX_MODE_SIMPLEX:

cups_duplex_mode = kDuplexNone;

break;

default: // UNKNOWN_DUPLEX_MODE

NOTREACHED();

break;

}

gtk_print_settings_set(gtk_settings_, kCUPSDuplex, cups_duplex_mode);

}

if (!page_setup_)

page_setup_ = gtk_page_setup_new();

gtk_print_settings_set_orientation(

gtk_settings_,

settings->IsLandscape() ? GTK_PAGE_ORIENTATION_LANDSCAPE :

GTK_PAGE_ORIENTATION_PORTRAIT);

delete printer_list;

}

InitPrintSettings(gtk_settings_, page_setup_, settings);

}

bool ClientPrintHandlerGtk::OnPrintDialog(

bool has_selection,

CefRefPtr<CefPrintDialogCallback> callback) {

dialog_callback_ = callback;

// TODO(cef): Identify the correct parent window.

GtkWindow* parent = NULL;

// TODO(estade): We need a window title here.

dialog_ = gtk_print_unix_dialog_new(NULL, parent);

g_signal_connect(dialog_, "delete-event",

G_CALLBACK(gtk_widget_hide_on_delete), NULL);

// Set modal so user cannot focus the same tab and press print again.

gtk_window_set_modal(GTK_WINDOW(dialog_), TRUE);

// Since we only generate PDF, only show printers that support PDF.

// TODO(thestig) Add more capabilities to support?

GtkPrintCapabilities cap = static_cast<GtkPrintCapabilities>(

GTK_PRINT_CAPABILITY_GENERATE_PDF |

GTK_PRINT_CAPABILITY_PAGE_SET |

GTK_PRINT_CAPABILITY_COPIES |

GTK_PRINT_CAPABILITY_COLLATE |

GTK_PRINT_CAPABILITY_REVERSE);

gtk_print_unix_dialog_set_manual_capabilities(GTK_PRINT_UNIX_DIALOG(dialog_),

cap);

gtk_print_unix_dialog_set_embed_page_setup(GTK_PRINT_UNIX_DIALOG(dialog_),

TRUE);

gtk_print_unix_dialog_set_support_selection(GTK_PRINT_UNIX_DIALOG(dialog_),

TRUE);

gtk_print_unix_dialog_set_has_selection(GTK_PRINT_UNIX_DIALOG(dialog_),

has_selection);

gtk_print_unix_dialog_set_settings(GTK_PRINT_UNIX_DIALOG(dialog_),

gtk_settings_);

g_signal_connect(dialog_, "response", G_CALLBACK(OnDialogResponseThunk),

this);

gtk_widget_show(dialog_);

return true;

}

bool ClientPrintHandlerGtk::OnPrintJob(

const CefString& document_name,

const CefString& pdf_file_path,

CefRefPtr<CefPrintJobCallback> callback) {

// If |printer_| is NULL then somehow the GTK printer list changed out under

// us. In which case, just bail out.

if (!printer_)

return false;

job_callback_ = callback;

// Save the settings for next time.

GetLastUsedSettings()->SetLastUsedSettings(gtk_settings_);

GtkPrintJob* print_job = gtk_print_job_new(

document_name.ToString().c_str(),

printer_,

gtk_settings_,

page_setup_);

gtk_print_job_set_source_file(print_job,

pdf_file_path.ToString().c_str(),

NULL);

gtk_print_job_send(print_job, OnJobCompletedThunk, this, NULL);

return true;

}

void ClientPrintHandlerGtk::OnPrintReset() {

if (dialog_) {

gtk_widget_destroy(dialog_);

dialog_ = NULL;

}

if (gtk_settings_) {

g_object_unref(gtk_settings_);

gtk_settings_ = NULL;

}

if (page_setup_) {

g_object_unref(page_setup_);

page_setup_ = NULL;

}

if (printer_) {

g_object_unref(printer_);

printer_ = NULL;

}

CefSize ClientPrintHandlerGtk::GetPdfPaperSize(int device_units_per_inch) {

GtkPageSetup* page_setup = gtk_page_setup_new();

float width = gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH);

float height = gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH);

g_object_unref(page_setup);

return CefSize(width * device_units_per_inch, height * device_units_per_inch);

}

void ClientPrintHandlerGtk::OnDialogResponse(GtkDialog *dialog,

gint response_id) {

int num_matched_handlers = g_signal_handlers_disconnect_by_func(

dialog_, reinterpret_cast<gpointer>(&OnDialogResponseThunk), this);

DCHECK_EQ(1, num_matched_handlers);

gtk_widget_hide(dialog_);

switch (response_id) {

case GTK_RESPONSE_OK: {

if (gtk_settings_)

g_object_unref(gtk_settings_);

gtk_settings_ = gtk_print_unix_dialog_get_settings(

GTK_PRINT_UNIX_DIALOG(dialog_));

if (printer_)

g_object_unref(printer_);

printer_ = gtk_print_unix_dialog_get_selected_printer(

GTK_PRINT_UNIX_DIALOG(dialog_));

g_object_ref(printer_);

if (page_setup_)

g_object_unref(page_setup_);

page_setup_ = gtk_print_unix_dialog_get_page_setup(

GTK_PRINT_UNIX_DIALOG(dialog_));

g_object_ref(page_setup_);

// Handle page ranges.

CefPrintSettings::PageRangeList ranges_vector;

gint num_ranges;

bool print_selection_only = false;

switch (gtk_print_settings_get_print_pages(gtk_settings_)) {

case GTK_PRINT_PAGES_RANGES: {

GtkPageRange* gtk_range =

gtk_print_settings_get_page_ranges(gtk_settings_, &num_ranges);

if (gtk_range) {

for (int i = 0; i < num_ranges; ++i) {

ranges_vector.push_back(

CefRange(gtk_range[i].start, gtk_range[i].end));

}

g_free(gtk_range);

}

break;

}

case GTK_PRINT_PAGES_SELECTION:

print_selection_only = true;

break;

case GTK_PRINT_PAGES_ALL:

// Leave |ranges_vector| empty to indicate print all pages.

break;

case GTK_PRINT_PAGES_CURRENT:

default:

NOTREACHED();

break;

}

CefRefPtr<CefPrintSettings> settings = CefPrintSettings::Create();

settings->SetPageRanges(ranges_vector);

settings->SetSelectionOnly(print_selection_only);

InitPrintSettings(gtk_settings_, page_setup_, settings);

dialog_callback_->Continue(settings);

dialog_callback_ = NULL;

return;

}

case GTK_RESPONSE_DELETE_EVENT: // Fall through.

case GTK_RESPONSE_CANCEL: {

dialog_callback_->Cancel();

dialog_callback_ = NULL;

return;

}

case GTK_RESPONSE_APPLY:

default: {

NOTREACHED();

}

void ClientPrintHandlerGtk::OnJobCompleted(GtkPrintJob* print_job,

GError* error) {

job_callback_->Continue();

job_callback_ = NULL;

}

cefpython/src/subprocess/print_handler_gtk.cpp at cefpython52 · pythonthings/cefpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

print_handler_gtk.cpp

Latest commit

History

Breadcrumbs

print_handler_gtk.cpp

File metadata and controls