Grcov report - main.rs

1

10

use clap::crate_version;

2

use clap_complete::{Generator, Shell};

3

4

use gio::prelude::*;

5

use gio::{Cancellable, FileCreateFlags, InputStream, OutputStream};

6

7

#[cfg(unix)]

8

use gio::{UnixInputStream, UnixOutputStream};

9

10

#[cfg(windows)]

11

mod windows_imports {

12

    pub use gio::{Win32InputStream, WriteOutputStream};

13

    pub use glib::translate::*;

14

15

#[cfg(windows)]

16

use self::windows_imports::*;

17

18

use cssparser::{match_ignore_ascii_case, Color};

19

20

use librsvg_c::{handle::PathOrUrl, sizing::LegacySize};

21

use rsvg::rsvg_convert_only::{

22

    set_source_color_on_cairo, AspectRatio, CssLength, Dpi, Horizontal, Length, Normalize,

23

    NormalizeParams, Parse, Rect, Signed, ULength, Unsigned, Validate, Vertical, ViewBox,

24

};

25

use rsvg::{AcceptLanguage, CairoRenderer, Language, LengthUnit, Loader, RenderingError};

26

27

use std::ffi::OsString;

28

use std::io;

29

use std::io::IsTerminal;

30

use std::ops::Deref;

31

use std::path::PathBuf;

32

33

#[derive(Debug)]

34

pub struct Error(String);

35

36

impl std::fmt::Display for Error {

37

20

    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

38

20

        write!(f, "{}", self.0)

39

20

40

41

42

impl From<cairo::Error> for Error {

43

2

    fn from(s: cairo::Error) -> Self {

44

2

        match s {

45

2

            cairo::Error::InvalidSize => Self(String::from(

46

                "The resulting image would be larger than 32767 pixels on either dimension.\n\

47

                 Librsvg currently cannot render to images bigger than that.\n\

48

                 Please specify a smaller size.",

49

2

)),

50

            e => Self(format!("{e}")),

51

52

2

53

54

55

macro_rules! impl_error_from {

56

    ($err:ty) => {

57

        impl From<$err> for Error {

58

7

            fn from(e: $err) -> Self {

59

7

                Self(format!("{e}"))

60

7

61

62

};

63

64

65

impl_error_from!(RenderingError);

66

impl_error_from!(cairo::IoError);

67

impl_error_from!(cairo::StreamWithError);

68

impl_error_from!(clap::Error);

69

70

macro_rules! error {

71

    ($($arg:tt)*) => (Error(std::format!($($arg)*)));

72

73

74

#[derive(Clone, Copy, Debug)]

75

struct Scale {

76

    pub x: f64,

77

    pub y: f64,

78

79

80

impl Scale {

81

    #[allow(clippy::float_cmp)]

82

28

    pub fn is_identity(&self) -> bool {

83

28

        self.x == 1.0 && self.y == 1.0

84

28

85

86

87

38

#[derive(Clone, Copy, Debug, PartialEq)]

88

struct Size {

89

19

    pub w: f64,

90

19

    pub h: f64,

91

92

93

impl Size {

94

254

    pub fn new(w: f64, h: f64) -> Self {

95

254

        Self { w, h }

96

254

97

98

99

#[derive(Clone, Copy, Debug)]

100

enum ResizeStrategy {

101

    Scale(Scale),

102

    Fit {

103

        size: Size,

104

        keep_aspect_ratio: bool,

105

},

106

    FitWidth(f64),

107

    FitHeight(f64),

108

    ScaleWithMaxSize {

109

        scale: Scale,

110

        max_width: Option<f64>,

111

        max_height: Option<f64>,

112

        keep_aspect_ratio: bool,

113

},

114

115

116

impl ResizeStrategy {

117

113

    pub fn apply(self, input: &Size) -> Option<Size> {

118

113

        if input.w == 0.0 || input.h == 0.0 {

119

2

            return None;

120

121

122

111

        let output_size = match self {

123

65

            ResizeStrategy::Scale(s) => Size::new(input.w * s.x, input.h * s.y),

124

125

            ResizeStrategy::Fit {

126

27

                size,

127

27

                keep_aspect_ratio,

128

            } => {

129

27

                if keep_aspect_ratio {

130

8

                    let aspect = AspectRatio::parse_str("xMinYMin meet").unwrap();

131

8

                    let rect = aspect.compute(

132

8

                        &ViewBox::from(Rect::from_size(input.w, input.h)),

133

8

                        &Rect::from_size(size.w, size.h),

134

);

135

8

                    Size::new(rect.width(), rect.height())

136

                } else {

137

19

                    size

138

139

140

141

2

            ResizeStrategy::FitWidth(w) => Size::new(w, input.h * w / input.w),

142

143

2

            ResizeStrategy::FitHeight(h) => Size::new(input.w * h / input.h, h),

144

145

            ResizeStrategy::ScaleWithMaxSize {

146

15

                scale,

147

15

                max_width,

148

15

                max_height,

149

15

                keep_aspect_ratio,

150

            } => {

151

15

                let scaled = Size::new(input.w * scale.x, input.h * scale.y);

152

153

15

                match (max_width, max_height, keep_aspect_ratio) {

154

1

                    (None, None, _) => scaled,

155

156

4

                    (Some(max_width), Some(max_height), false) => {

157

4

                        if scaled.w <= max_width && scaled.h <= max_height {

158

2

                            scaled

159

                        } else {

160

2

                            Size::new(max_width, max_height)

161

162

163

164

2

                    (Some(max_width), Some(max_height), true) => {

165

2

                        if scaled.w <= max_width && scaled.h <= max_height {

166

1

                            scaled

167

                        } else {

168

1

                            let aspect = AspectRatio::parse_str("xMinYMin meet").unwrap();

169

1

                            let rect = aspect.compute(

170

1

                                &ViewBox::from(Rect::from_size(scaled.w, scaled.h)),

171

1

                                &Rect::from_size(max_width, max_height),

172

);

173

1

                            Size::new(rect.width(), rect.height())

174

175

176

177

2

                    (Some(max_width), None, false) => {

178

2

                        if scaled.w <= max_width {

179

1

                            scaled

180

                        } else {

181

1

                            Size::new(max_width, scaled.h)

182

183

184

185

2

                    (Some(max_width), None, true) => {

186

2

                        if scaled.w <= max_width {

187

1

                            scaled

188

                        } else {

189

1

                            let factor = max_width / scaled.w;

190

1

                            Size::new(max_width, scaled.h * factor)

191

192

193

194

2

                    (None, Some(max_height), false) => {

195

2

                        if scaled.h <= max_height {

196

1

                            scaled

197

                        } else {

198

1

                            Size::new(scaled.w, max_height)

199

200

201

202

2

                    (None, Some(max_height), true) => {

203

2

                        if scaled.h <= max_height {

204

1

                            scaled

205

                        } else {

206

1

                            let factor = max_height / scaled.h;

207

1

                            Size::new(scaled.w * factor, max_height)

208

209

210

211

212

};

213

214

111

        Some(output_size)

215

113

216

217

218

enum Surface {

219

    Png(cairo::ImageSurface, OutputStream),

220

    #[cfg(system_deps_have_cairo_pdf)]

221

    Pdf(cairo::PdfSurface, Size),

222

    #[cfg(system_deps_have_cairo_ps)]

223

    Ps(cairo::PsSurface, Size),

224

    #[cfg(system_deps_have_cairo_svg)]

225

    Svg(cairo::SvgSurface),

226

227

228

impl Deref for Surface {

229

    type Target = cairo::Surface;

230

231

111

    fn deref(&self) -> &cairo::Surface {

232

166

        match self {

233

55

            Self::Png(surface, _) => surface,

234

            #[cfg(system_deps_have_cairo_pdf)]

235

76

            Self::Pdf(surface, _) => surface,

236

            #[cfg(system_deps_have_cairo_ps)]

237

20

            Self::Ps(surface, _) => surface,

238

            #[cfg(system_deps_have_cairo_svg)]

239

16

            Self::Svg(surface) => surface,

240

241

111

242

243

244

impl AsRef<cairo::Surface> for Surface {

245

87

    fn as_ref(&self) -> &cairo::Surface {

246

87

        self

247

87

248

249

250

impl Surface {

251

84

    pub fn new(

252

        format: Format,

253

        size: Size,

254

        stream: OutputStream,

255

        unit: LengthUnit,

256

    ) -> Result<Self, Error> {

257

84

        match format {

258

57

            Format::Png => Self::new_for_png(size, stream),

259

15

            Format::Pdf => Self::new_for_pdf(size, stream, None),

260

1

            Format::Pdf1_7 => Self::new_for_pdf(size, stream, Some(cairo::PdfVersion::_1_7)),

261

1

            Format::Pdf1_6 => Self::new_for_pdf(size, stream, Some(cairo::PdfVersion::_1_6)),

262

1

            Format::Pdf1_5 => Self::new_for_pdf(size, stream, Some(cairo::PdfVersion::_1_5)),

263

1

            Format::Pdf1_4 => Self::new_for_pdf(size, stream, Some(cairo::PdfVersion::_1_4)),

264

2

            Format::Ps => Self::new_for_ps(size, stream, false),

265

2

            Format::Eps => Self::new_for_ps(size, stream, true),

266

4

            Format::Svg => Self::new_for_svg(size, stream, unit),

267

268

84

269

270

57

    fn new_for_png(size: Size, stream: OutputStream) -> Result<Self, Error> {

271

        // We use ceil() to avoid chopping off the last pixel if it is partially covered.

272

57

        let w = checked_i32(size.w.ceil())?;

273

56

        let h = checked_i32(size.h.ceil())?;

274

56

        let surface = cairo::ImageSurface::create(cairo::Format::ARgb32, w, h)?;

275

55

        Ok(Self::Png(surface, stream))

276

57

277

278

    #[cfg(system_deps_have_cairo_pdf)]

279

19

    fn new_for_pdf(

280

        size: Size,

281

        stream: OutputStream,

282

        version: Option<cairo::PdfVersion>,

283

    ) -> Result<Self, Error> {

284

19

        let surface = cairo::PdfSurface::for_stream(size.w, size.h, stream.into_write())?;

285

19

        if let Some(ver) = version {

286

4

            surface.restrict(ver)?;

287

288

19

        if let Some(date) = metadata::creation_date()? {

289

20

            surface.set_metadata(cairo::PdfMetadata::CreateDate, &date)?;

290

19

291

16

        Ok(Self::Pdf(surface, size))

292

19

293

294

    #[cfg(not(system_deps_have_cairo_pdf))]

295

    fn new_for_pdf(_size: Size, _stream: OutputStream) -> Result<Self, Error> {

296

        Err(Error("unsupported format".to_string()))

297

298

299

    #[cfg(system_deps_have_cairo_ps)]

300

4

    fn new_for_ps(size: Size, stream: OutputStream, eps: bool) -> Result<Self, Error> {

301

4

        let surface = cairo::PsSurface::for_stream(size.w, size.h, stream.into_write())?;

302

4

        surface.set_eps(eps);

303

4

        Ok(Self::Ps(surface, size))

304

4

305

306

    #[cfg(not(system_deps_have_cairo_ps))]

307

    fn new_for_ps(_size: Size, _stream: OutputStream, _eps: bool) -> Result<Self, Error> {

308

        Err(Error("unsupported format".to_string()))

309

310

311

    #[cfg(system_deps_have_cairo_svg)]

312

4

    fn new_for_svg(size: Size, stream: OutputStream, unit: LengthUnit) -> Result<Self, Error> {

313

4

        let mut surface = cairo::SvgSurface::for_stream(size.w, size.h, stream.into_write())?;

314

315

4

        let svg_unit = match unit {

316

1

            LengthUnit::Cm => cairo::SvgUnit::Cm,

317

            LengthUnit::In => cairo::SvgUnit::In,

318

1

            LengthUnit::Mm => cairo::SvgUnit::Mm,

319

            LengthUnit::Pc => cairo::SvgUnit::Pc,

320

            LengthUnit::Pt => cairo::SvgUnit::Pt,

321

2

            _ => cairo::SvgUnit::User,

322

};

323

324

4

        surface.set_document_unit(svg_unit);

325

4

        Ok(Self::Svg(surface))

326

4

327

328

    #[cfg(not(system_deps_have_cairo_svg))]

329

    fn new_for_svg(_size: Size, _stream: OutputStream, u: LengthUnit) -> Result<Self, Error> {

330

        Err(Error("unsupported format".to_string()))

331

332

333

    #[allow(clippy::too_many_arguments)] // yeah, yeah, we'll refactor it eventually

334

87

    pub fn render(

335

        &self,

336

        renderer: &CairoRenderer,

337

        left: f64,

338

        top: f64,

339

        final_size: Size,

340

        geometry: cairo::Rectangle,

341

        background_color: Option<Color>,

342

        id: Option<&str>,

343

    ) -> Result<(), Error> {

344

87

        let cr = cairo::Context::new(self)?;

345

346

87

        if let Some(color) = background_color {

347

9

            set_source_color_on_cairo(&cr, &color);

348

9

            cr.paint()?;

349

350

351

87

        cr.translate(left, top);

352

353

        // Note that we don't scale the viewport; we change the cr's transform instead.  This

354

        // is because SVGs are rendered proportionally to fit within the viewport, regardless

355

        // of the viewport's proportions.  Rsvg-convert allows non-proportional scaling, so

356

        // we do that with a separate transform.

357

358

87

        let scale = Scale {

359

87

            x: final_size.w / geometry.width(),

360

87

            y: final_size.h / geometry.height(),

361

};

362

363

87

        cr.scale(scale.x, scale.y);

364

365

87

        let viewport = cairo::Rectangle::new(0.0, 0.0, geometry.width(), geometry.height());

366

367

87

        match id {

368

83

            None => renderer.render_document(&cr, &viewport)?,

369

4

            Some(_) => renderer.render_element(&cr, id, &viewport)?,

370

371

372

87

        if !matches!(self, Self::Png(_, _)) {

373

119

            cr.show_page()?;

374

375

376

87

        Ok(())

377

87

378

379

79

    pub fn finish(self) -> Result<(), Error> {

380

79

        match self {

381

55

            Self::Png(surface, stream) => surface.write_to_png(&mut stream.into_write())?,

382

48

            _ => self.finish_output_stream().map(|_| ())?,

383

384

385

79

        Ok(())

386

79

387

388

389

113

fn checked_i32(x: f64) -> Result<i32, cairo::Error> {

390

114

    cast::i32(x).map_err(|_| cairo::Error::InvalidSize)

391

113

392

393

mod metadata {

394

    use super::Error;

395

    use chrono::prelude::*;

396

    use std::env;

397

    use std::str::FromStr;

398

399

19

    pub fn creation_date() -> Result<Option<String>, Error> {

400

19

        match env::var("SOURCE_DATE_EPOCH") {

401

4

            Ok(epoch) => match i64::from_str(&epoch) {

402

1

                Ok(seconds) => {

403

1

                    let datetime = Utc.timestamp_opt(seconds, 0).unwrap();

404

1

                    Ok(Some(datetime.to_rfc3339()))

405

1

406

3

                Err(e) => Err(error!("Environment variable $SOURCE_DATE_EPOCH: {}", e)),

407

4

},

408

15

            Err(env::VarError::NotPresent) => Ok(None),

409

            Err(env::VarError::NotUnicode(_)) => Err(error!(

410

                "Environment variable $SOURCE_DATE_EPOCH is not valid Unicode"

411

)),

412

413

19

414

415

416

struct Stdin;

417

418

impl Stdin {

419

73

    fn is_terminal(&self) -> bool {

420

73

        io::stdin().is_terminal()

421

73

422

423

    #[cfg(unix)]

424

73

    pub fn as_gio_input_stream(&self) -> InputStream {

425

        use std::os::fd::AsRawFd;

426

427

73

        let raw_fd = io::stdin().as_raw_fd();

428

73

        let stream = unsafe { UnixInputStream::with_fd(raw_fd) };

429

73

        stream.upcast::<InputStream>()

430

73

431

432

    #[cfg(windows)]

433

    pub fn as_gio_input_stream(&self) -> InputStream {

434

        let stream = unsafe { Win32InputStream::with_handle(io::stdin()) };

435

        stream.upcast::<InputStream>()

436

437

438

439

struct Stdout;

440

441

impl Stdout {

442

    #[cfg(unix)]

443

80

    pub fn stream() -> OutputStream {

444

80

        let stream = unsafe { UnixOutputStream::with_fd(1) };

445

80

        stream.upcast::<OutputStream>()

446

80

447

448

    #[cfg(windows)]

449

    pub fn stream() -> OutputStream {

450

        // Ideally, we could use a Win32OutputStream, but when it's used with a file redirect,

451

        // it gets buggy.

452

        // https://gitlab.gnome.org/GNOME/librsvg/-/issues/812

453

        let stream = WriteOutputStream::new(io::stdout());

454

        stream.upcast::<OutputStream>()

455

456

457

458

#[derive(Clone, Debug)]

459

enum Input {

460

    Stdin,

461

24

    Named(PathOrUrl),

462

463

464

impl std::fmt::Display for Input {

465

3

    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

466

3

        match self {

467

3

            Input::Stdin => "stdin".fmt(f),

468

            Input::Named(p) => p.fmt(f),

469

470

3

471

472

473

#[derive(Clone, Debug)]

474

enum Output {

475

    Stdout,

476

    Path(PathBuf),

477

478

479

impl std::fmt::Display for Output {

480

    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

481

        match self {

482

            Output::Stdout => "stdout".fmt(f),

483

            Output::Path(p) => p.display().fmt(f),

484

485

486

487

488

// Keep this enum in sync with supported_formats in parse_args()

489

#[derive(Clone, Copy, Debug)]

490

enum Format {

491

    Png,

492

    Pdf,

493

    Pdf1_7,

494

    Pdf1_6,

495

    Pdf1_5,

496

    Pdf1_4,

497

Ps,

498

    Eps,

499

    Svg,

500

501

502

struct Converter {

503

    pub dpi_x: Resolution,

504

    pub dpi_y: Resolution,

505

    pub zoom: Scale,

506

    pub width: Option<ULength<Horizontal>>,

507

    pub height: Option<ULength<Vertical>>,

508

    pub left: Option<Length<Horizontal>>,

509

    pub top: Option<Length<Vertical>>,

510

    pub page_size: Option<(ULength<Horizontal>, ULength<Vertical>)>,

511

    pub format: Format,

512

    pub export_id: Option<String>,

513

    pub keep_aspect_ratio: bool,

514

    pub background_color: Option<Color>,

515

    pub stylesheet: Option<PathBuf>,

516

    pub language: Language,

517

    pub unlimited: bool,

518

    pub keep_image_data: bool,

519

    pub input: Vec<Input>,

520

    pub output: Output,

521

    pub testing: bool,

522

523

524

impl Converter {

525

88

    pub fn convert(self) -> Result<(), Error> {

526

88

        let stylesheet = match self.stylesheet {

527

3

            Some(ref p) => std::fs::read_to_string(p)

528

                .map(Some)

529

4

                .map_err(|e| error!("Error reading stylesheet: {}", e))?,

530

85

            None => None,

531

};

532

533

87

        let mut surface: Option<Surface> = None;

534

535

        // Use user units per default

536

87

        let mut unit = LengthUnit::Px;

537

538

26

        fn set_unit<N: Normalize, V: Validate>(

539

            l: CssLength<N, V>,

540

            p: &NormalizeParams,

541

            u: LengthUnit,

542

        ) -> f64 {

543

26

            match u {

544

6

                LengthUnit::Pt => l.to_points(p),

545

                LengthUnit::In => l.to_inches(p),

546

4

                LengthUnit::Cm => l.to_cm(p),

547

8

                LengthUnit::Mm => l.to_mm(p),

548

                LengthUnit::Pc => l.to_picas(p),

549

8

                _ => l.to_user(p),

550

551

26

552

553

        let stdin = Stdin;

554

555

87

        for (page_idx, input) in self.input.iter().enumerate() {

556

190

            let (stream, basefile) = match input {

557

                Input::Stdin => {

558

73

                    if stdin.is_terminal() {

559

                        eprintln!("rsvg-convert is reading from standard input.");

560

                        eprintln!("Type Control-C to exit if this is not what you expected.");

561

562

563

73

                    (stdin.as_gio_input_stream(), None)

564

565

566

22

                Input::Named(p) => {

567

22

                    let file = p.get_gfile();

568

22

                    let stream = file

569

22

                        .read(None::<&Cancellable>)

570

22

                        .map_err(|e| error!("Error reading file \"{}\": {}", input, e))?;

571

22

                    (stream.upcast::<InputStream>(), Some(file))

572

22

573

};

574

575

190

            let mut handle = Loader::new()

576

95

                .with_unlimited_size(self.unlimited)

577

95

                .keep_image_data(self.keep_image_data)

578

95

                .read_stream(&stream, basefile.as_ref(), None::<&Cancellable>)

579

97

                .map_err(|e| error!("Error reading SVG {}: {}", input, e))?;

580

581

94

            if let Some(ref css) = stylesheet {

582

2

                handle

583

2

                    .set_stylesheet(css)

584

                    .map_err(|e| error!("Error applying stylesheet: {}", e))?;

585

586

587

94

            let renderer = CairoRenderer::new(&handle)

588

94

                .with_dpi(self.dpi_x.0, self.dpi_y.0)

589

94

                .with_language(&self.language)

590

94

                .test_mode(self.testing);

591

592

94

            let geometry = natural_geometry(&renderer, input, self.export_id.as_deref())?;

593

594

93

            let natural_size = Size::new(geometry.width(), geometry.height());

595

596

93

            let params = NormalizeParams::from_dpi(Dpi::new(self.dpi_x.0, self.dpi_y.0));

597

598

            // Convert natural size and requested size to pixels or points, depending on the target format,

599

186

            let (natural_size, requested_width, requested_height, page_size) = match self.format {

600

                Format::Png => {

601

                    // PNG surface requires units in pixels

602

58

603

                        natural_size,

604

74

                        self.width.map(|l| l.to_user(&params)),

605

74

                        self.height.map(|l| l.to_user(&params)),

606

62

                        self.page_size.map(|(w, h)| Size {

607

2

                            w: w.to_user(&params),

608

2

                            h: h.to_user(&params),

609

2

}),

610

58

611

612

613

                Format::Pdf

614

                | Format::Pdf1_7

615

                | Format::Pdf1_6

616

                | Format::Pdf1_5

617

                | Format::Pdf1_4

618

                | Format::Ps

619

                | Format::Eps => {

620

                    // These surfaces require units in points

621

31

                    unit = LengthUnit::Pt;

622

623

31

624

31

                        Size {

625

31

                            w: ULength::<Horizontal>::new(natural_size.w, LengthUnit::Px)

626

                                .to_points(&params),

627

31

                            h: ULength::<Vertical>::new(natural_size.h, LengthUnit::Px)

628

                                .to_points(&params),

629

},

630

39

                        self.width.map(|l| l.to_points(&params)),

631

39

                        self.height.map(|l| l.to_points(&params)),

632

39

                        self.page_size.map(|(w, h)| Size {

633

4

                            w: w.to_points(&params),

634

4

                            h: h.to_points(&params),

635

4

}),

636

637

31

638

639

                Format::Svg => {

640

4

                    let (w_unit, h_unit) =

641

10

                        (self.width.map(|l| l.unit), self.height.map(|l| l.unit));

642

643

8

                    unit = match (w_unit, h_unit) {

644

1

                        (None, None) => LengthUnit::Px,

645

                        (None, u) | (u, None) => u.unwrap(),

646

3

                        (u1, u2) => {

647

3

                            if u1 == u2 {

648

2

                                u1.unwrap()

649

                            } else {

650

1

                                LengthUnit::Px

651

652

653

};

654

655

                    // Supported SVG units are px, in, cm, mm, pt, pc, ch

656

4

657

4

                        Size {

658

4

                            w: set_unit(

659

4

                                ULength::<Horizontal>::new(natural_size.w, LengthUnit::Px),

660

                                &params,

661

4

                                unit,

662

),

663

4

                            h: set_unit(

664

4

                                ULength::<Vertical>::new(natural_size.h, LengthUnit::Px),

665

                                &params,

666

4

                                unit,

667

),

668

},

669

7

                        self.width.map(|l| set_unit(l, &params, unit)),

670

7

                        self.height.map(|l| set_unit(l, &params, unit)),

671

6

                        self.page_size.map(|(w, h)| Size {

672

1

                            w: set_unit(w, &params, unit),

673

1

                            h: set_unit(h, &params, unit),

674

1

}),

675

676

4

677

};

678

679

93

            let strategy = match (requested_width, requested_height) {

680

                // when w and h are not specified, scale to the requested zoom (if any)

681

65

                (None, None) => ResizeStrategy::Scale(self.zoom),

682

683

                // when w and h are specified, but zoom is not, scale to the requested size

684

26

                (Some(width), Some(height)) if self.zoom.is_identity() => ResizeStrategy::Fit {

685

24

                    size: Size::new(width, height),

686

24

                    keep_aspect_ratio: self.keep_aspect_ratio,

687

24

},

688

689

                // if only one between w and h is specified and there is no zoom, scale to the

690

                // requested w or h and use the same scaling factor for the other

691

1

                (Some(w), None) if self.zoom.is_identity() => ResizeStrategy::FitWidth(w),

692

1

                (None, Some(h)) if self.zoom.is_identity() => ResizeStrategy::FitHeight(h),

693

694

                // otherwise scale the image, but cap the zoom to match the requested size

695

2

                _ => ResizeStrategy::ScaleWithMaxSize {

696

2

                    scale: self.zoom,

697

                    max_width: requested_width,

698

                    max_height: requested_height,

699

2

                    keep_aspect_ratio: self.keep_aspect_ratio,

700

2

},

701

};

702

703

93

            let final_size = self.final_size(&strategy, &natural_size, input)?;

704

705

            // Create the surface once on the first input,

706

            // except for PDF, PS, and EPS, which allow differently-sized pages.

707

92

            let page_size = page_size.unwrap_or(final_size);

708

92

            let s = match &mut surface {

709

8

                Some(s) => {

710

8

                    match s {

711

                        #[cfg(system_deps_have_cairo_pdf)]

712

6

                        Surface::Pdf(pdf, size) => {

713

6

                            pdf.set_size(page_size.w, page_size.h).map_err(|e| {

714

                                error!(

715

                                    "Error setting PDF page #{} size {}: {}",

716

                                    page_idx + 1,

717

                                    input,

718

719

720

                            })?;

721

6

                            *size = page_size;

722

6

723

                        #[cfg(system_deps_have_cairo_ps)]

724

2

                        Surface::Ps(ps, size) => {

725

2

                            ps.set_size(page_size.w, page_size.h);

726

2

                            *size = page_size;

727

2

728

                        _ => {}

729

730

8

731

8

732

84

                surface @ None => surface.insert(self.create_surface(page_size, unit)?),

733

};

734

735

92

            let left = self.left.map(|l| set_unit(l, &params, unit)).unwrap_or(0.0);

736

92

            let top = self.top.map(|l| set_unit(l, &params, unit)).unwrap_or(0.0);

737

738

87

            s.render(

739

                &renderer,

740

                left,

741

                top,

742

                final_size,

743

87

                geometry,

744

87

                self.background_color,

745

87

                self.export_id.as_deref(),

746

747

87

            .map_err(|e| error!("Error rendering SVG {}: {}", input, e))?

748

95

749

750

79

        if let Some(s) = surface.take() {

751

79

            s.finish()

752

79

                .map_err(|e| error!("Error saving output {}: {}", self.output, e))?

753

79

};

754

755

79

        Ok(())

756

246

757

758

93

    fn final_size(

759

        &self,

760

        strategy: &ResizeStrategy,

761

        natural_size: &Size,

762

        input: &Input,

763

    ) -> Result<Size, Error> {

764

186

        strategy

765

            .apply(natural_size)

766

94

            .ok_or_else(|| error!("The SVG {} has no dimensions", input))

767

93

768

769

84

    fn create_surface(&self, size: Size, unit: LengthUnit) -> Result<Surface, Error> {

770

84

        let output_stream = match self.output {

771

80

            Output::Stdout => Stdout::stream(),

772

4

            Output::Path(ref p) => {

773

4

                let file = gio::File::for_path(p);

774

4

                let stream = file

775

4

                    .replace(None, false, FileCreateFlags::NONE, None::<&Cancellable>)

776

4

                    .map_err(|e| error!("Error opening output \"{}\": {}", self.output, e))?;

777

4

                stream.upcast::<OutputStream>()

778

4

779

};

780

781

84

        Surface::new(self.format, size, output_stream, unit)

782

84

783

784

785

94

fn natural_geometry(

786

    renderer: &CairoRenderer,

787

    input: &Input,

788

    export_id: Option<&str>,

789

) -> Result<cairo::Rectangle, Error> {

790

282

    match export_id {

791

89

        None => renderer.legacy_layer_geometry(None),

792

5

        Some(id) => renderer.geometry_for_element(Some(id)),

793

794

93

    .map(|(ink_r, _)| ink_r)

795

95

    .map_err(|e| match e {

796

1

        RenderingError::IdNotFound => error!(

797

            "File {} does not have an object with id \"{}\")",

798

            input,

799

1

            export_id.unwrap()

800

),

801

        _ => error!("Error rendering SVG {}: {}", input, e),

802

1

})

803

94

804

805

109

fn build_cli() -> clap::Command {

806

109

    let supported_formats = vec![

807

        "png",

808

        #[cfg(system_deps_have_cairo_pdf)]

809

        "pdf",

810

        #[cfg(system_deps_have_cairo_pdf)]

811

        "pdf1.7",

812

        #[cfg(system_deps_have_cairo_pdf)]

813

        "pdf1.6",

814

        #[cfg(system_deps_have_cairo_pdf)]

815

        "pdf1.5",

816

        #[cfg(system_deps_have_cairo_pdf)]

817

        "pdf1.4",

818

        #[cfg(system_deps_have_cairo_ps)]

819

        "ps",

820

        #[cfg(system_deps_have_cairo_ps)]

821

        "eps",

822

        #[cfg(system_deps_have_cairo_svg)]

823

        "svg",

824

];

825

826

2943

    clap::Command::new("rsvg-convert")

827

        .version(concat!("version ", crate_version!()))

828

        .about("Convert SVG files to other image formats")

829

        .disable_version_flag(true)

830

109

        .disable_help_flag(true)

831

        .arg(

832

109

            clap::Arg::new("help")

833

                .short('?')

834

                .long("help")

835

                .help("Display the help")

836

109

                .action(clap::ArgAction::Help)

837

109

838

        .arg(

839

109

            clap::Arg::new("version")

840

                .short('v')

841

                .long("version")

842

                .help("Display the version information")

843

109

                .action(clap::ArgAction::Version)

844

109

845

        .arg(

846

109

            clap::Arg::new("res_x")

847

                .short('d')

848

                .long("dpi-x")

849

                .num_args(1)

850

                .value_name("number")

851

                .default_value("96")

852

                .value_parser(parse_resolution)

853

                .help("Pixels per inch")

854

109

                .action(clap::ArgAction::Set),

855

109

856

        .arg(

857

109

            clap::Arg::new("res_y")

858

                .short('p')

859

                .long("dpi-y")

860

                .num_args(1)

861

                .value_name("number")

862

                .default_value("96")

863

                .value_parser(parse_resolution)

864

                .help("Pixels per inch")

865

109

                .action(clap::ArgAction::Set),

866

109

867

        .arg(

868

109

            clap::Arg::new("zoom_x")

869

                .short('x')

870

                .long("x-zoom")

871

                .num_args(1)

872

                .value_name("number")

873

                .conflicts_with("zoom")

874

                .value_parser(parse_zoom_factor)

875

                .help("Horizontal zoom factor")

876

109

                .action(clap::ArgAction::Set),

877

109

878

        .arg(

879

109

            clap::Arg::new("zoom_y")

880

                .short('y')

881

                .long("y-zoom")

882

                .num_args(1)

883

                .value_name("number")

884

                .conflicts_with("zoom")

885

                .value_parser(parse_zoom_factor)

886

                .help("Vertical zoom factor")

887

109

                .action(clap::ArgAction::Set),

888

109

889

        .arg(

890

109

            clap::Arg::new("zoom")

891

                .short('z')

892

                .long("zoom")

893

                .num_args(1)

894

                .value_name("number")

895

                .value_parser(parse_zoom_factor)

896

                .help("Zoom factor")

897

109

                .action(clap::ArgAction::Set),

898

109

899

        .arg(

900

109

            clap::Arg::new("size_x")

901

                .short('w')

902

                .long("width")

903

                .num_args(1)

904

                .value_name("length")

905

                .value_parser(parse_length::<Horizontal, Unsigned>)

906

                .help("Width [defaults to the width of the SVG]")

907

109

                .action(clap::ArgAction::Set),

908

109

909

        .arg(

910

109

            clap::Arg::new("size_y")

911

                .short('h')

912

                .long("height")

913

                .num_args(1)

914

                .value_name("length")

915

                .value_parser(parse_length::<Vertical, Unsigned>)

916

                .help("Height [defaults to the height of the SVG]")

917

109

                .action(clap::ArgAction::Set),

918

109

919

        .arg(

920

109

            clap::Arg::new("top")

921

                .long("top")

922

                .num_args(1)

923

                .value_name("length")

924

                .value_parser(parse_length::<Vertical, Signed>)

925

                .help("Distance between top edge of page and the image [defaults to 0]")

926

109

                .action(clap::ArgAction::Set),

927

109

928

        .arg(

929

109

            clap::Arg::new("left")

930

                .long("left")

931

                .num_args(1)

932

                .value_name("length")

933

                .value_parser(parse_length::<Horizontal, Signed>)

934

                .help("Distance between left edge of page and the image [defaults to 0]")

935

109

                .action(clap::ArgAction::Set),

936

109

937

        .arg(

938

109

            clap::Arg::new("page_width")

939

                .long("page-width")

940

                .num_args(1)

941

                .value_name("length")

942

                .value_parser(parse_length::<Horizontal, Unsigned>)

943

                .help("Width of output media [defaults to the width of the SVG]")

944

109

                .action(clap::ArgAction::Set),

945

109

946

        .arg(

947

109

            clap::Arg::new("page_height")

948

                .long("page-height")

949

                .num_args(1)

950

                .value_name("length")

951

                .value_parser(parse_length::<Vertical, Unsigned>)

952

                .help("Height of output media [defaults to the height of the SVG]")

953

109

                .action(clap::ArgAction::Set),

954

109

955

        .arg(

956

218

            clap::Arg::new("format")

957

                .short('f')

958

                .long("format")

959

109

                .num_args(1)

960

218

                .value_parser(clap::builder::PossibleValuesParser::new(supported_formats.as_slice()))

961

                .ignore_case(true)

962

                .default_value("png")

963

                .help("Output format")

964

109

                .action(clap::ArgAction::Set),

965

109

966

        .arg(

967

218

            clap::Arg::new("output")

968

                .short('o')

969

                .long("output")

970

109

                .num_args(1)

971

218

                .value_parser(clap::value_parser!(PathBuf))

972

                .help("Output filename [defaults to stdout]")

973

109

                .action(clap::ArgAction::Set),

974

109

975

        .arg(

976

218

            clap::Arg::new("export_id")

977

                .short('i')

978

109

                .long("export-id")

979

218

                .value_parser(clap::builder::NonEmptyStringValueParser::new())

980

                .value_name("object id")

981

                .help("SVG id of object to export [default is to export all objects]")

982

109

                .action(clap::ArgAction::Set),

983

109

984

        .arg(

985

218

            clap::Arg::new("accept-language")

986

                .short('l')

987

109

                .long("accept-language")

988

218

                .value_parser(clap::builder::NonEmptyStringValueParser::new())

989

                .value_name("languages")

990

                .help("Languages to accept, for example \"es-MX,de,en\" [default uses language from the environment]")

991

109

                .action(clap::ArgAction::Set),

992

109

993

        .arg(

994

109

            clap::Arg::new("keep_aspect")

995

                .short('a')

996

                .long("keep-aspect-ratio")

997

                .help("Preserve the aspect ratio")

998

109

                .action(clap::ArgAction::SetTrue),

999

109

1000

        .arg(

1001

218

            clap::Arg::new("background")

1002

                .short('b')

1003

                .long("background-color")

1004

                .num_args(1)

1005

109

                .value_name("color")

1006

218

                .value_parser(clap::builder::NonEmptyStringValueParser::new())

1007

                .default_value("none")

1008

                .help("Set the background color using a CSS color spec")

1009

109

                .action(clap::ArgAction::Set),

1010

109

1011

        .arg(

1012

218

            clap::Arg::new("stylesheet")

1013

                .short('s')

1014

                .long("stylesheet")

1015

109

            .num_args(1)

1016

218

                .value_parser(clap::value_parser!(PathBuf))

1017

                .value_name("filename.css")

1018

                .help("Filename of CSS stylesheet to apply")

1019

109

                .action(clap::ArgAction::Set),

1020

109

1021

        .arg(

1022

109

            clap::Arg::new("unlimited")

1023

                .short('u')

1024

                .long("unlimited")

1025

                .help("Allow huge SVG files")

1026

109

                .action(clap::ArgAction::SetTrue),

1027

109

1028

        .arg(

1029

109

            clap::Arg::new("keep_image_data")

1030

                .long("keep-image-data")

1031

                .help("Keep image data")

1032

                .conflicts_with("no_keep_image_data")

1033

109

                .action(clap::ArgAction::SetTrue),

1034

109

1035

        .arg(

1036

109

            clap::Arg::new("no_keep_image_data")

1037

                .long("no-keep-image-data")

1038

                .help("Do not keep image data")

1039

                .conflicts_with("keep_image_data")

1040

109

                .action(clap::ArgAction::SetTrue),

1041

109

1042

        .arg(

1043

109

            clap::Arg::new("testing")

1044

                .long("testing")

1045

                .help("Render images for librsvg's test suite")

1046

                .hide(true)

1047

109

                .action(clap::ArgAction::SetTrue),

1048

109

1049

        .arg(

1050

218

            clap::Arg::new("completion")

1051

                .long("completion")

1052

                .help("Output shell completion for the given shell")

1053

                .num_args(1)

1054

109

                .action(clap::ArgAction::Set)

1055

218

                .value_parser(clap::value_parser!(Shell)),

1056

109

1057

        .arg(

1058

218

            clap::Arg::new("FILE")

1059

218

                .value_parser(clap::value_parser!(OsString))

1060

                .help("The input file(s) to convert, you can use - for stdin")

1061

109

                .num_args(1..)

1062

109

                .action(clap::ArgAction::Append),

1063

109

1064

109

1065

1066

fn print_completions<G: Generator>(gen: G, cmd: &mut clap::Command) {

1067

    clap_complete::generate(gen, cmd, cmd.get_name().to_string(), &mut io::stdout());

1068

1069

1070

109

fn parse_args() -> Result<Converter, Error> {

1071

109

    let cli = build_cli();

1072

109

    let matches = cli.get_matches();

1073

1074

109

    if let Some(shell) = matches.get_one::<Shell>("completion").copied() {

1075

        let mut cmd = build_cli();

1076

        eprintln!("Generating completion file for {shell}");

1077

        print_completions(shell, &mut cmd);

1078

        std::process::exit(0);

1079

1080

1081

99

    let format_str: &String = matches

1082

        .get_one("format")

1083

        .expect("already provided default_value");

1084

1085

99

    let format = match_ignore_ascii_case! {

1086

        format_str,

1087

        "png" => Format::Png,

1088

        "pdf" => Format::Pdf,

1089

        "pdf1.7" => Format::Pdf1_7,

1090

        "pdf1.6" => Format::Pdf1_6,

1091

        "pdf1.5" => Format::Pdf1_5,

1092

        "pdf1.4" => Format::Pdf1_4,

1093

        "ps" => Format::Ps,

1094

        "eps" => Format::Eps,

1095

        "svg" => Format::Svg,

1096

        _ => unreachable!("clap should already have the list of possible values"),

1097

};

1098

1099

99

    let keep_image_data = match format {

1100

21

        Format::Ps | Format::Eps | Format::Pdf => !matches.get_flag("no_keep_image_data"),

1101

78

        _ => matches.get_flag("keep_image_data"),

1102

};

1103

1104

99

    let language = match matches.get_one::<String>("accept-language") {

1105

95

        None => Language::FromEnvironment,

1106

4

        Some(s) => AcceptLanguage::parse(s)

1107

            .map(Language::AcceptLanguage)

1108

5

            .map_err(|e| clap::Error::raw(clap::error::ErrorKind::InvalidValue, e))?,

1109

};

1110

1111

98

    let background_str: &String = matches

1112

        .get_one("background")

1113

        .expect("already provided default_value");

1114

98

    let background_color: Option<Color> = parse_background_color(background_str)

1115

12

        .map_err(|e| clap::Error::raw(clap::error::ErrorKind::InvalidValue, e))?;

1116

1117

    // librsvg expects ids starting with '#', so it can lookup ids in externs like "subfile.svg#subid".

1118

    // For the user's convenience, we prepend '#' automatically; we only support specifying ids from

1119

    // the toplevel, and don't expect users to lookup things in externs.

1120

5

    let lookup_id = |id: &String| {

1121

5

        if id.starts_with('#') {

1122

1

            id.clone()

1123

        } else {

1124

4

            format!("#{id}")

1125

1126

5

};

1127

1128

92

    let width: Option<ULength<Horizontal>> = matches.get_one("size_x").copied();

1129

92

    let height: Option<ULength<Vertical>> = matches.get_one("size_y").copied();

1130

1131

92

    let left: Option<Length<Horizontal>> = matches.get_one("left").copied();

1132

92

    let top: Option<Length<Vertical>> = matches.get_one("top").copied();

1133

1134

92

    let page_width: Option<ULength<Horizontal>> = matches.get_one("page_width").copied();

1135

92

    let page_height: Option<ULength<Vertical>> = matches.get_one("page_height").copied();

1136

1137

92

    let page_size = match (page_width, page_height) {

1138

85

        (None, None) => None,

1139

        (Some(_), None) | (None, Some(_)) => {

1140

2

            return Err(error!(

1141

                "Please specify both the --page-width and --page-height options together."

1142

));

1143

1144

5

        (Some(w), Some(h)) => Some((w, h)),

1145

};

1146

1147

90

    let dpi_x = *matches

1148

        .get_one::<Resolution>("res_x")

1149

        .expect("already provided default_value");

1150

90

    let dpi_y = *matches

1151

        .get_one::<Resolution>("res_y")

1152

        .expect("already provided default_value");

1153

1154

90

    let zoom: Option<ZoomFactor> = matches.get_one("zoom").copied();

1155

90

    let zoom_x: Option<ZoomFactor> = matches.get_one("zoom_x").copied();

1156

90

    let zoom_y: Option<ZoomFactor> = matches.get_one("zoom_y").copied();

1157

1158

90

    let input = match matches.get_many::<std::ffi::OsString>("FILE") {

1159

17

        Some(values) => values

1160

27

            .map(|f| PathOrUrl::from_os_str(f).map_err(Error))

1161

27

            .map(|r| match r {

1162

27

                Ok(p) if p.is_stdin_alias() => Ok(Input::Stdin),

1163

24

                p => p.map(Input::Named),

1164

27

})

1165

17

            .collect::<Result<Vec<Input>, Error>>()?,

1166

1167

73

        None => vec![Input::Stdin],

1168

};

1169

1170

190

    if input.iter().filter(|i| matches!(i, Input::Stdin)).count() > 1 {

1171

1

        return Err(error!("Only one input file can be read from stdin."));

1172

1173

1174

89

    if input.len() > 1 && !matches!(format, Format::Ps | Format::Eps | Format::Pdf) {

1175

1

        return Err(error!(

1176

            "Multiple SVG files are only allowed for PDF and (E)PS output."

1177

));

1178

1179

1180

88

    let export_id: Option<String> = matches.get_one::<String>("export_id").map(lookup_id);

1181

1182

88

    let output = match matches.get_one::<PathBuf>("output") {

1183

84

        None => Output::Stdout,

1184

4

        Some(path) => Output::Path(path.clone()),

1185

};

1186

1187

88

    Ok(Converter {

1188

        dpi_x,

1189

        dpi_y,

1190

88

        zoom: Scale {

1191

94

            x: zoom.or(zoom_x).map(|factor| factor.0).unwrap_or(1.0),

1192

94

            y: zoom.or(zoom_y).map(|factor| factor.0).unwrap_or(1.0),

1193

},

1194

        width,

1195

        height,

1196

        left,

1197

        top,

1198

88

        page_size,

1199

88

        format,

1200

88

        export_id,

1201

88

        keep_aspect_ratio: matches.get_flag("keep_aspect"),

1202

        background_color,

1203

88

        stylesheet: matches.get_one("stylesheet").cloned(),

1204

88

        unlimited: matches.get_flag("unlimited"),

1205

88

        keep_image_data,

1206

88

        language,

1207

88

        input,

1208

88

        output,

1209

88

        testing: matches.get_flag("testing"),

1210

})

1211

99

1212

1213

#[derive(Copy, Clone)]

1214

struct Resolution(f64);

1215

1216

200

fn parse_resolution(v: &str) -> Result<Resolution, String> {

1217

200

    match v.parse::<f64>() {

1218

200

        Ok(res) if res > 0.0 => Ok(Resolution(res)),

1219

2

        Ok(_) => Err(String::from("Invalid resolution")),

1220

        Err(e) => Err(format!("{e}")),

1221

1222

200

1223

1224

#[derive(Copy, Clone)]

1225

struct ZoomFactor(f64);

1226

1227

10

fn parse_zoom_factor(v: &str) -> Result<ZoomFactor, String> {

1228

10

    match v.parse::<f64>() {

1229

9

        Ok(res) if res > 0.0 => Ok(ZoomFactor(res)),

1230

1

        Ok(_) => Err(String::from("Invalid zoom factor")),

1231

1

        Err(e) => Err(format!("{e}")),

1232

1233

10

1234

1235

101

fn parse_background_color(s: &str) -> Result<Option<Color>, String> {

1236

    match s {

1237

101

        "none" | "None" => Ok(None),

1238

24

        _ => <Color as Parse>::parse_str(s).map(Some).map_err(|e| {

1239

7

            format!("Invalid value: The argument '{s}' can not be parsed as a CSS color value: {e}")

1240

7

}),

1241

1242

101

1243

1244

75

fn is_absolute_unit(u: LengthUnit) -> bool {

1245

    use LengthUnit::*;

1246

1247

75

    match u {

1248

1

        Percent | Em | Ex | Ch => false,

1249

74

        Px | In | Cm | Mm | Pt | Pc => true,

1250

        _ => false,

1251

1252

75

1253

1254

76

fn parse_length<N: Normalize, V: Validate>(s: &str) -> Result<CssLength<N, V>, String> {

1255

228

    <CssLength<N, V> as Parse>::parse_str(s)

1256

77

        .map_err(|_| format!("Invalid value: The argument '{s}' can not be parsed as a length"))

1257

151

        .and_then(|l| {

1258

75

            if is_absolute_unit(l.unit) {

1259

74

                Ok(l)

1260

            } else {

1261

1

                Err(format!(

1262

                    "Invalid value '{s}': supported units are px, in, cm, mm, pt, pc"

1263

))

1264

1265

75

})

1266

76

1267

1268

119

fn main() {

1269

207

    if let Err(e) = parse_args().and_then(|converter| converter.convert()) {

1270

40

        std::eprintln!("{e}");

1271

20

        std::process::exit(1);

1272

1273

79

1274

1275

#[cfg(test)]

1276

mod color_tests {

1277

    use super::*;

1278

1279

    #[test]

1280

2

    fn valid_color_is_ok() {

1281

1

        assert!(parse_background_color("Red").is_ok());

1282

2

1283

1284

    #[test]

1285

2

    fn none_is_handled_as_transparent() {

1286

1

        assert_eq!(parse_background_color("None").unwrap(), None,);

1287

2

1288

1289

    #[test]

1290

2

    fn invalid_is_handled_as_invalid_value() {

1291

1

        assert!(parse_background_color("foo").is_err());

1292

2

1293

1294

1295

#[cfg(test)]

1296

mod sizing_tests {

1297

    use super::*;

1298

1299

    #[test]

1300

2

    fn detects_empty_size() {

1301

1

        let strategy = ResizeStrategy::Scale(Scale { x: 42.0, y: 42.0 });

1302

1

        assert!(strategy.apply(&Size::new(0.0, 0.0)).is_none());

1303

2

1304

1305

    #[test]

1306

2

    fn scale() {

1307

1

        let strategy = ResizeStrategy::Scale(Scale { x: 2.0, y: 3.0 });

1308

1

        assert_eq!(

1309

1

            strategy.apply(&Size::new(1.0, 2.0)).unwrap(),

1310

1

            Size::new(2.0, 6.0),

1311

);

1312

2

1313

1314

    #[test]

1315

2

    fn fit_non_proportional() {

1316

1

        let strategy = ResizeStrategy::Fit {

1317

1

            size: Size::new(40.0, 10.0),

1318

            keep_aspect_ratio: false,

1319

};

1320

1321

1

        assert_eq!(

1322

1

            strategy.apply(&Size::new(2.0, 1.0)).unwrap(),

1323

1

            Size::new(40.0, 10.0),

1324

);

1325

2

1326

1327

    #[test]

1328

2

    fn fit_proportional_wider_than_tall() {

1329

1

        let strategy = ResizeStrategy::Fit {

1330

1

            size: Size::new(40.0, 10.0),

1331

            keep_aspect_ratio: true,

1332

};

1333

1334

1

        assert_eq!(

1335

1

            strategy.apply(&Size::new(2.0, 1.0)).unwrap(),

1336

1

            Size::new(20.0, 10.0),

1337

);

1338

2

1339

1340

    #[test]

1341

2

    fn fit_proportional_taller_than_wide() {

1342

1

        let strategy = ResizeStrategy::Fit {

1343

1

            size: Size::new(100.0, 50.0),

1344

            keep_aspect_ratio: true,

1345

};

1346

1347

1

        assert_eq!(

1348

1

            strategy.apply(&Size::new(1.0, 2.0)).unwrap(),

1349

1

            Size::new(25.0, 50.0),

1350

);

1351

2

1352

1353

    #[test]

1354

2

    fn fit_width() {

1355

1

        let strategy = ResizeStrategy::FitWidth(100.0);

1356

1357

1

        assert_eq!(

1358

1

            strategy.apply(&Size::new(1.0, 2.0)).unwrap(),

1359

1

            Size::new(100.0, 200.0),

1360

);

1361

2

1362

1363

    #[test]

1364

2

    fn fit_height() {

1365

1

        let strategy = ResizeStrategy::FitHeight(100.0);

1366

1367

1

        assert_eq!(

1368

1

            strategy.apply(&Size::new(1.0, 2.0)).unwrap(),

1369

1

            Size::new(50.0, 100.0),

1370

);

1371

2

1372

1373

    #[test]

1374

2

    fn scale_no_max_size_non_proportional() {

1375

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1376

1

            scale: Scale { x: 2.0, y: 3.0 },

1377

1

            max_width: None,

1378

1

            max_height: None,

1379

            keep_aspect_ratio: false,

1380

};

1381

1382

1

        assert_eq!(

1383

1

            strategy.apply(&Size::new(1.0, 2.0)).unwrap(),

1384

1

            Size::new(2.0, 6.0),

1385

);

1386

2

1387

1388

    #[test]

1389

2

    fn scale_with_max_width_and_height_fits_non_proportional() {

1390

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1391

1

            scale: Scale { x: 2.0, y: 3.0 },

1392

1

            max_width: Some(10.0),

1393

1

            max_height: Some(20.0),

1394

            keep_aspect_ratio: false,

1395

};

1396

1397

1

        assert_eq!(

1398

1

            strategy.apply(&Size::new(4.0, 2.0)).unwrap(),

1399

1

            Size::new(8.0, 6.0)

1400

);

1401

2

1402

1403

    #[test]

1404

2

    fn scale_with_max_width_and_height_fits_proportional() {

1405

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1406

1

            scale: Scale { x: 2.0, y: 3.0 },

1407

1

            max_width: Some(10.0),

1408

1

            max_height: Some(20.0),

1409

            keep_aspect_ratio: true,

1410

};

1411

1412

1

        assert_eq!(

1413

1

            strategy.apply(&Size::new(4.0, 2.0)).unwrap(),

1414

1

            Size::new(8.0, 6.0)

1415

);

1416

2

1417

1418

    #[test]

1419

2

    fn scale_with_max_width_and_height_doesnt_fit_non_proportional() {

1420

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1421

1

            scale: Scale { x: 10.0, y: 20.0 },

1422

1

            max_width: Some(10.0),

1423

1

            max_height: Some(20.0),

1424

            keep_aspect_ratio: false,

1425

};

1426

1427

1

        assert_eq!(

1428

1

            strategy.apply(&Size::new(4.0, 5.0)).unwrap(),

1429

1

            Size::new(10.0, 20.0)

1430

);

1431

2

1432

1433

    #[test]

1434

2

    fn scale_with_max_width_and_height_doesnt_fit_proportional() {

1435

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1436

1

            scale: Scale { x: 10.0, y: 20.0 },

1437

1

            max_width: Some(10.0),

1438

1

            max_height: Some(15.0),

1439

            keep_aspect_ratio: true,

1440

};

1441

1442

1

        assert_eq!(

1443

            // this will end up with a 40:120 aspect ratio

1444

1

            strategy.apply(&Size::new(4.0, 6.0)).unwrap(),

1445

            // which should be shrunk to 1:3 that fits in (10, 15) per the max_width/max_height above

1446

1

            Size::new(5.0, 15.0)

1447

);

1448

2

1449

1450

    #[test]

1451

2

    fn scale_with_max_width_fits_non_proportional() {

1452

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1453

1

            scale: Scale { x: 5.0, y: 20.0 },

1454

1

            max_width: Some(10.0),

1455

1

            max_height: None,

1456

            keep_aspect_ratio: false,

1457

};

1458

1459

1

        assert_eq!(

1460

1

            strategy.apply(&Size::new(1.0, 10.0)).unwrap(),

1461

1

            Size::new(5.0, 200.0),

1462

);

1463

2

1464

1465

    #[test]

1466

2

    fn scale_with_max_width_fits_proportional() {

1467

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1468

1

            scale: Scale { x: 5.0, y: 20.0 },

1469

1

            max_width: Some(10.0),

1470

1

            max_height: None,

1471

            keep_aspect_ratio: true,

1472

};

1473

1474

1

        assert_eq!(

1475

1

            strategy.apply(&Size::new(1.0, 10.0)).unwrap(),

1476

1

            Size::new(5.0, 200.0),

1477

);

1478

2

1479

1480

    #[test]

1481

2

    fn scale_with_max_height_fits_non_proportional() {

1482

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1483

1

            scale: Scale { x: 20.0, y: 5.0 },

1484

1

            max_width: None,

1485

1

            max_height: Some(10.0),

1486

            keep_aspect_ratio: false,

1487

};

1488

1489

1

        assert_eq!(

1490

1

            strategy.apply(&Size::new(10.0, 1.0)).unwrap(),

1491

1

            Size::new(200.0, 5.0),

1492

);

1493

2

1494

1495

    #[test]

1496

2

    fn scale_with_max_height_fits_proportional() {

1497

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1498

1

            scale: Scale { x: 20.0, y: 5.0 },

1499

1

            max_width: None,

1500

1

            max_height: Some(10.0),

1501

            keep_aspect_ratio: true,

1502

};

1503

1504

1

        assert_eq!(

1505

1

            strategy.apply(&Size::new(10.0, 1.0)).unwrap(),

1506

1

            Size::new(200.0, 5.0),

1507

);

1508

2

1509

1510

    #[test]

1511

2

    fn scale_with_max_width_doesnt_fit_non_proportional() {

1512

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1513

1

            scale: Scale { x: 10.0, y: 20.0 },

1514

1

            max_width: Some(10.0),

1515

1

            max_height: None,

1516

            keep_aspect_ratio: false,

1517

};

1518

1519

1

        assert_eq!(

1520

1

            strategy.apply(&Size::new(5.0, 10.0)).unwrap(),

1521

1

            Size::new(10.0, 200.0),

1522

);

1523

2

1524

1525

    #[test]

1526

2

    fn scale_with_max_width_doesnt_fit_proportional() {

1527

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1528

1

            scale: Scale { x: 10.0, y: 20.0 },

1529

1

            max_width: Some(10.0),

1530

1

            max_height: None,

1531

            keep_aspect_ratio: true,

1532

};

1533

1534

1

        assert_eq!(

1535

1

            strategy.apply(&Size::new(5.0, 10.0)).unwrap(),

1536

1

            Size::new(10.0, 40.0),

1537

);

1538

2

1539

1540

    #[test]

1541

2

    fn scale_with_max_height_doesnt_fit_non_proportional() {

1542

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1543

1

            scale: Scale { x: 10.0, y: 20.0 },

1544

1

            max_width: None,

1545

1

            max_height: Some(10.0),

1546

            keep_aspect_ratio: false,

1547

};

1548

1549

1

        assert_eq!(

1550

1

            strategy.apply(&Size::new(5.0, 10.0)).unwrap(),

1551

1

            Size::new(50.0, 10.0),

1552

);

1553

2

1554

1555

    #[test]

1556

2

    fn scale_with_max_height_doesnt_fit_proportional() {

1557

1

        let strategy = ResizeStrategy::ScaleWithMaxSize {

1558

1

            scale: Scale { x: 8.0, y: 20.0 },

1559

1

            max_width: None,

1560

1

            max_height: Some(10.0),

1561

            keep_aspect_ratio: true,

1562

};

1563

1564

1

        assert_eq!(

1565

1

            strategy.apply(&Size::new(5.0, 10.0)).unwrap(),

1566

1

            Size::new(2.0, 10.0),

1567

);

1568

2

1569