mcs/class/System.Drawing/Test/System.Drawing/GDIPlusTest.cs

   1 //
   2 // Direct GDI+ API unit tests
   3 //
   4 // Authors:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Drawing;
  31 using System.Drawing.Drawing2D;
  32 using System.Drawing.Imaging;
  33 using System.Runtime.InteropServices;
  34 using NUnit.Framework;
  35
  36 namespace MonoTests.System.Drawing {
  37
  38         // copied from Mono's System.Drawing.dll gdiEnums.cs
  39         internal enum Status {
  40                 Ok = 0,
  41                 GenericError = 1,
  42                 InvalidParameter = 2,
  43                 OutOfMemory = 3,
  44                 ObjectBusy = 4,
  45                 InsufficientBuffer = 5,
  46                 NotImplemented = 6,
  47                 Win32Error = 7,
  48                 WrongState = 8,
  49                 Aborted = 9,
  50                 FileNotFound = 10,
  51                 ValueOverflow = 11,
  52                 AccessDenied = 12,
  53                 UnknownImageFormat = 13,
  54                 FontFamilyNotFound = 14,
  55                 FontStyleNotFound = 15,
  56                 NotTrueTypeFont = 16,
  57                 UnsupportedGdiplusVersion = 17,
  58                 GdiplusNotInitialized = 18,
  59                 PropertyNotFound = 19,
  60                 PropertyNotSupported = 20,
  61                 ProfileNotFound = 21
  62         }
  63
  64         // copied from Mono's System.Drawing.dll gdiEnums.cs
  65         internal enum Unit {
  66                 UnitWorld = 0,
  67                 UnitDisplay = 1,
  68                 UnitPixel = 2,
  69                 UnitPoint = 3,
  70                 UnitInch = 4,
  71                 UnitDocument = 5,
  72                 UnitMillimeter = 6
  73         }
  74
  75         [StructLayout (LayoutKind.Sequential, CharSet = CharSet.Auto)]
  76         public class LOGFONT {
  77                 public int lfHeight = 0;
  78                 public int lfWidth = 0;
  79                 public int lfEscapement = 0;
  80                 public int lfOrientation = 0;
  81                 public int lfWeight = 0;
  82                 public byte lfItalic = 0;
  83                 public byte lfUnderline = 0;
  84                 public byte lfStrikeOut = 0;
  85                 public byte lfCharSet = 0;
  86                 public byte lfOutPrecision = 0;
  87                 public byte lfClipPrecision = 0;
  88                 public byte lfQuality = 0;
  89                 public byte lfPitchAndFamily = 0;
  90                 [MarshalAs (UnmanagedType.ByValTStr, SizeConst = 32)]
  91                 public string lfFaceName = null;
  92         }
  93
  94         [TestFixture]
  95         public class GDIPlusTest {
  96
  97                 // FontFamily
  98
  99                 [DllImport ("gdiplus.dll", CharSet=CharSet.Auto)]
 100                 internal static extern Status GdipCreateFontFamilyFromName (
 101                         [MarshalAs (UnmanagedType.LPWStr)] string fName, IntPtr collection, out IntPtr fontFamily);
 102
 103                 [DllImport ("gdiplus.dll")]
 104                 internal static extern Status GdipGetGenericFontFamilySerif (out IntPtr fontFamily);
 105
 106                 [DllImport ("gdiplus.dll")]
 107                 internal static extern Status GdipDeleteFontFamily (IntPtr fontfamily);
 108
 109                 [Test]
 110                 public void DeleteFontFamily ()
 111                 {
 112                         // invalid image pointer (null)
 113                         Assert.AreEqual (Status.InvalidParameter, GdipDeleteFontFamily (IntPtr.Zero), "null");
 114
 115                         IntPtr font_family;
 116                         GdipCreateFontFamilyFromName ("Arial", IntPtr.Zero, out font_family);
 117                         Assert.IsTrue (font_family != IntPtr.Zero, "GdipCreateFontFamilyFromName");
 118                         Assert.AreEqual (Status.Ok, GdipDeleteFontFamily (font_family), "first");
 119                 }
 120
 121                 [Test]
 122                 [Category ("NotWorking")]
 123                 public void DeleteFontFamily_DoubleDispose ()
 124                 {
 125                         IntPtr font_family;
 126                         GdipGetGenericFontFamilySerif (out font_family);
 127                         // first dispose
 128                         Assert.AreEqual (Status.Ok, GdipDeleteFontFamily (font_family), "first");
 129                         // second dispose
 130                         Assert.AreEqual (Status.Ok, GdipDeleteFontFamily (font_family), "second");
 131                 }
 132
 133                 // Font
 134
 135                 [DllImport ("gdiplus.dll")]
 136                 internal static extern Status GdipCreateFont (IntPtr fontFamily, float emSize, FontStyle style, GraphicsUnit unit, out IntPtr font);
 137
 138                 [DllImport ("gdiplus.dll", CharSet = CharSet.Auto)]
 139                 internal static extern Status GdipGetLogFont (IntPtr font, IntPtr graphics, [MarshalAs (UnmanagedType.AsAny), Out] object logfontA);
 140
 141                 [DllImport ("gdiplus.dll")]
 142                 internal static extern Status GdipDeleteFont (IntPtr font);
 143
 144                 [Test]
 145                 public void CreateFont ()
 146                 {
 147                         IntPtr family;
 148                         GdipCreateFontFamilyFromName ("Arial", IntPtr.Zero, out family);
 149                         Assert.IsTrue (family != IntPtr.Zero, "family");
 150
 151                         IntPtr font;
 152                         Assert.AreEqual (Status.Ok, GdipCreateFont (family, 10f, FontStyle.Regular, GraphicsUnit.Point, out font), "GdipCreateFont");
 153                         Assert.IsTrue (font != IntPtr.Zero, "font");
 154
 155                         LOGFONT lf = new LOGFONT ();
 156                         lf.lfCharSet = 1;
 157                         Assert.AreEqual (Status.InvalidParameter, GdipGetLogFont (font, IntPtr.Zero, (object) lf), "GdipGetLogFont-null-graphics");
 158                         Assert.AreEqual (0, lf.lfCharSet, "lfCharSet-null-graphics");
 159
 160                         IntPtr image;
 161                         GdipCreateBitmapFromScan0 (10, 10, 0, PixelFormat.Format32bppArgb, IntPtr.Zero, out image);
 162                         Assert.IsTrue (image != IntPtr.Zero, "image");
 163
 164                         IntPtr graphics;
 165                         GdipGetImageGraphicsContext (image, out graphics);
 166                         Assert.IsTrue (graphics != IntPtr.Zero, "graphics");
 167
 168                         lf.lfCharSet = 1;
 169                         Assert.AreEqual (Status.InvalidParameter, GdipGetLogFont (IntPtr.Zero, graphics, (object) lf), "GdipGetLogFont-null");
 170                         Assert.AreEqual (0, lf.lfCharSet, "lfCharSet-null");
 171
 172                         lf.lfCharSet = 1;
 173                         Assert.AreEqual (Status.Ok, GdipGetLogFont (font, graphics, (object) lf), "GdipGetLogFont");
 174                         Assert.AreEqual (0, lf.lfCharSet, "lfCharSet");
 175                         // strangely this is 1 in the managed side
 176
 177                         Assert.AreEqual (Status.Ok, GdipDeleteFont (font), "GdipDeleteFont");
 178                         Assert.AreEqual (Status.InvalidParameter, GdipDeleteFont (IntPtr.Zero), "GdipDeleteFont-null");
 179
 180                         Assert.AreEqual (Status.Ok, GdipDeleteFontFamily (family), "GdipDeleteFontFamily");
 181                         Assert.AreEqual (Status.Ok, GdipDisposeImage (image), "GdipDisposeImage");
 182                         Assert.AreEqual (Status.Ok, GdipDeleteGraphics (graphics), "GdipDeleteGraphics");
 183                 }
 184
 185                 // Bitmap
 186
 187                 [DllImport ("gdiplus.dll")]
 188                 internal static extern Status GdipCreateBitmapFromScan0 (int width, int height, int stride, PixelFormat format, IntPtr scan0, out IntPtr bmp);
 189
 190                 [Test]
 191                 public void CreateBitmapFromScan0 ()
 192                 {
 193                         IntPtr bmp;
 194                         Assert.AreEqual (Status.InvalidParameter, GdipCreateBitmapFromScan0 (-1, 10, 10, PixelFormat.Format32bppArgb, IntPtr.Zero, out bmp), "negative width");
 195                 }
 196
 197                 // Brush
 198
 199                 [DllImport ("gdiplus.dll")]
 200                 static internal extern Status GdipDeleteBrush (IntPtr brush);
 201
 202                 [Test]
 203                 public void DeleteBrush ()
 204                 {
 205                         Assert.AreEqual (Status.InvalidParameter, GdipDeleteBrush (IntPtr.Zero), "GdipDeleteBrush");
 206                 }
 207
 208                 // Graphics
 209
 210                 [DllImport ("gdiplus.dll")]
 211                 internal static extern Status GdipGetImageGraphicsContext (IntPtr image, out IntPtr graphics);
 212
 213                 [DllImport ("gdiplus.dll")]
 214                 static internal extern Status GdipDeleteGraphics (IntPtr graphics);
 215
 216                 [Test]
 217                 public void Graphics ()
 218                 {
 219                         IntPtr graphics;
 220                         Assert.AreEqual (Status.InvalidParameter, GdipGetImageGraphicsContext (IntPtr.Zero, out graphics), "GdipGetImageGraphicsContext");
 221
 222                         IntPtr image;
 223                         GdipCreateBitmapFromScan0 (10, 10, 0, PixelFormat.Format32bppArgb, IntPtr.Zero, out image);
 224                         Assert.IsTrue (image != IntPtr.Zero, "image");
 225
 226                         Assert.AreEqual (Status.Ok, GdipGetImageGraphicsContext (image, out graphics), "GdipGetImageGraphicsContext");
 227                         Assert.IsTrue (graphics != IntPtr.Zero, "graphics");
 228
 229                         Assert.AreEqual (Status.Ok, GdipDeleteGraphics (graphics), "GdipDeleteGraphics");
 230                         Assert.AreEqual (Status.InvalidParameter, GdipDeleteGraphics (IntPtr.Zero), "GdipDeleteGraphics-null");
 231
 232                         Assert.AreEqual (Status.Ok, GdipDisposeImage (image), "GdipDisposeImage");
 233                 }
 234
 235                 // GraphicsPath
 236
 237                 [DllImport ("gdiplus.dll")]
 238                 internal static extern Status GdipCreatePath (FillMode brushMode, out IntPtr path);
 239
 240                 [DllImport ("gdiplus.dll")]
 241                 internal static extern Status GdipGetPointCount (IntPtr path, out int count);
 242
 243                 [DllImport ("gdiplus.dll")]
 244                 internal static extern Status GdipGetPathPoints (IntPtr path, [Out] PointF[] points, int count);
 245
 246                 [DllImport ("gdiplus.dll")]
 247                 internal static extern Status GdipGetPathTypes (IntPtr path, [Out] byte[] types, int count);
 248
 249                 [DllImport ("gdiplus.dll")]
 250                 internal static extern Status GdipResetPath (IntPtr path);
 251
 252                 [DllImport ("gdiplus.dll")]
 253                 internal static extern Status GdipAddPathLine (IntPtr path, float x1, float y1, float x2, float y2);
 254
 255                 [DllImport ("gdiplus.dll")]
 256                 internal static extern Status GdipAddPathLine2 (IntPtr path, PointF[] points, int count);
 257
 258                 [DllImport ("gdiplus.dll")]
 259                 internal static extern Status GdipWidenPath (IntPtr path, IntPtr pen, IntPtr matrix, float flatness);
 260
 261                 [DllImport ("gdiplus.dll")]
 262                 internal static extern Status GdipDeletePath (IntPtr path);
 263
 264                 [Test]
 265                 public void GetPointCount_Zero ()
 266                 {
 267                         IntPtr path;
 268                         Assert.AreEqual (Status.Ok, GdipCreatePath (FillMode.Alternate, out path), "GdipCreatePath");
 269                         Assert.IsTrue (path != IntPtr.Zero, "Handle");
 270
 271                         int count;
 272                         Assert.AreEqual (Status.InvalidParameter, GdipGetPointCount (IntPtr.Zero, out count), "GdipGetPointCount-null");
 273                         Assert.AreEqual (Status.Ok, GdipGetPointCount (path, out count), "GdipGetPointCount");
 274                         Assert.AreEqual (0, count, "Count");
 275
 276                         PointF[] points = new PointF[count];
 277                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathPoints (IntPtr.Zero, points, count), "GdipGetPathPoints-null-1");
 278                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathPoints (path, null, count), "GdipGetPathPoints-null-2");
 279                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathPoints (path, points, count), "GdipGetPathPoints");
 280                         // can't get the points if the count is zero!
 281
 282                         byte[] types = new byte[count];
 283                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathTypes (IntPtr.Zero, types, count), "GdipGetPathTypes-null-1");
 284                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathTypes (path, null, count), "GdipGetPathTypes-null-2");
 285                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathTypes (path, types, count), "GdipGetPathTypes");
 286                         // can't get the types if the count is zero!
 287
 288                         PointF[] pts_2f = new PointF[2] { new PointF (2f, 4f), new PointF (10f, 30f) };
 289                         Assert.AreEqual (Status.InvalidParameter, GdipAddPathLine2 (IntPtr.Zero, pts_2f, pts_2f.Length), "GdipAddPathLine2-null-path");
 290                         Assert.AreEqual (Status.InvalidParameter, GdipAddPathLine2 (path, null, pts_2f.Length), "GdipAddPathLine2-null-points");
 291                         Assert.AreEqual (Status.InvalidParameter, GdipAddPathLine2 (path, pts_2f, -1), "GdipAddPathLine2-negative-count");
 292                         Assert.AreEqual (Status.Ok, GdipAddPathLine2 (path, pts_2f, pts_2f.Length), "GdipAddPathLine2");
 293
 294                         Assert.AreEqual (Status.Ok, GdipGetPointCount (path, out count), "GdipGetPointCount");
 295                         Assert.AreEqual (2, count, "Count");
 296
 297                         points = new PointF[count];
 298                         Assert.AreEqual (Status.Ok, GdipGetPathPoints (path, points, count), "GdipGetPathPoints-ok");
 299
 300                         types = new byte[count];
 301                         Assert.AreEqual (Status.Ok, GdipGetPathTypes (path, types, count), "GdipGetPathTypes-ok");
 302
 303                         Assert.AreEqual (Status.Ok, GdipResetPath (path), "GdipResetPath");
 304                         Assert.AreEqual (Status.InvalidParameter, GdipResetPath (IntPtr.Zero), "GdipResetPath-null");
 305
 306                         Assert.AreEqual (Status.Ok, GdipDeletePath (path), "GdipDeletePath");
 307                         Assert.AreEqual (Status.InvalidParameter, GdipDeletePath (IntPtr.Zero), "GdipDeletePath-null");
 308                 }
 309
 310                 [Test]
 311                 public void Widen ()
 312                 {
 313                         IntPtr pen;
 314                         Assert.AreEqual (Status.Ok, GdipCreatePen1 (0, 0f, Unit.UnitWorld, out pen), "GdipCreatePen1");
 315
 316                         IntPtr path;
 317                         Assert.AreEqual (Status.Ok, GdipCreatePath (FillMode.Alternate, out path), "GdipCreatePath");
 318
 319                         IntPtr matrix;
 320                         Assert.AreEqual (Status.Ok, GdipCreateMatrix (out matrix), "GdipCreateMatrix");
 321
 322                         Assert.AreEqual (Status.InvalidParameter, GdipWidenPath (IntPtr.Zero, pen, matrix, 1.0f), "GdipWidenPath-null-path");
 323                         // empty path
 324                         Assert.AreEqual (Status.OutOfMemory, GdipWidenPath (path, pen, matrix, 1.0f), "GdipWidenPath");
 325
 326                         // add something to the path
 327                         Assert.AreEqual (Status.InvalidParameter, GdipAddPathLine (IntPtr.Zero, 1, 1, 10, 10), "GdipAddPathLine");
 328                         Assert.AreEqual (Status.Ok, GdipAddPathLine (path, 1, 1, 10, 10), "GdipAddPathLine");
 329
 330                         int count;
 331                         Assert.AreEqual (Status.Ok, GdipGetPointCount (path, out count), "GdipGetPointCount");
 332                         Assert.AreEqual (2, count, "Count");
 333
 334                         Assert.AreEqual (Status.Ok, GdipWidenPath (path, pen, matrix, 1.0f), "GdipWidenPath-2");
 335
 336                         Assert.AreEqual (Status.Ok, GdipDeleteMatrix (matrix), "GdipDeleteMatrix");
 337                         Assert.AreEqual (Status.Ok, GdipDeletePath (path), "GdipDeletePath");
 338                         Assert.AreEqual (Status.Ok, GdipDeletePen (pen), "GdipDeletePen");
 339                 }
 340
 341                 // Matrix
 342
 343                 [DllImport ("gdiplus.dll")]
 344                 internal static extern Status GdipCreateMatrix (out IntPtr matrix);
 345
 346                 [DllImport ("gdiplus.dll")]
 347                 internal static extern Status GdipDeleteMatrix (IntPtr matrix);
 348
 349                 [Test]
 350                 public void Matrix ()
 351                 {
 352                         IntPtr matrix;
 353                         Assert.AreEqual (Status.Ok, GdipCreateMatrix (out matrix), "GdipCreateMatrix");
 354                         Assert.IsTrue (matrix != IntPtr.Zero, "Handle");
 355
 356                         Assert.AreEqual (Status.InvalidParameter, GdipDeleteMatrix (IntPtr.Zero), "GdipDeleteMatrix-null");
 357                         Assert.AreEqual (Status.Ok, GdipDeleteMatrix (matrix), "GdipDeleteMatrix");
 358                 }
 359
 360                 // Image
 361
 362                 [DllImport ("gdiplus.dll")]
 363                 internal static extern Status GdipDisposeImage (IntPtr image);
 364
 365                 [Test]
 366                 public void DisposeImage ()
 367                 {
 368                         // invalid image pointer (null)
 369                         Assert.AreEqual (Status.InvalidParameter, GdipDisposeImage (IntPtr.Zero), "null");
 370
 371                         IntPtr image;
 372                         GdipCreateBitmapFromScan0 (10, 10, 0, PixelFormat.Format32bppArgb, IntPtr.Zero, out image);
 373                         Assert.AreEqual (Status.Ok, GdipDisposeImage (image), "first");
 374                 }
 375
 376                 [Test]
 377                 [Category ("NotWorking")]
 378                 public void DisposeImage_Dual ()
 379                 {
 380                         IntPtr image;
 381                         GdipCreateBitmapFromScan0 (10, 10, 0, PixelFormat.Format32bppArgb, IntPtr.Zero, out image);
 382                         // first dispose
 383                         Assert.AreEqual (Status.Ok, GdipDisposeImage (image), "first");
 384                         // second dispose
 385                         Assert.AreEqual (Status.ObjectBusy, GdipDisposeImage (image), "second");
 386                 }
 387
 388
 389                 [DllImport ("gdiplus.dll")]
 390                 internal static extern Status GdipGetImageThumbnail (IntPtr image, uint width, uint height, out IntPtr thumbImage, IntPtr callback, IntPtr callBackData);
 391
 392                 [Test]
 393                 [Category ("NotWorking")] // libgdiplus doesn't implement GdipGetImageThumbnail (it is done inside S.D)
 394                 public void GetImageThumbnail ()
 395                 {
 396                         IntPtr ptr;
 397
 398                         // invalid image pointer (null)
 399                         Assert.AreEqual (Status.InvalidParameter, GdipGetImageThumbnail (IntPtr.Zero, 10, 10, out ptr, IntPtr.Zero, IntPtr.Zero));
 400
 401                         IntPtr image;
 402                         GdipCreateBitmapFromScan0 (10, 10, 0, PixelFormat.Format32bppArgb, IntPtr.Zero, out image);
 403                         try {
 404                                 // invalid width (0)
 405                                 Assert.AreEqual (Status.OutOfMemory, GdipGetImageThumbnail (image, 0, 10, out ptr, IntPtr.Zero, IntPtr.Zero));
 406                                 // invalid width (negative)
 407                                 Assert.AreEqual (Status.OutOfMemory, GdipGetImageThumbnail (image, 0x8000000, 10, out ptr, IntPtr.Zero, IntPtr.Zero));
 408                                 // invalid height (0)
 409                                 Assert.AreEqual (Status.OutOfMemory, GdipGetImageThumbnail (image, 10, 0, out ptr, IntPtr.Zero, IntPtr.Zero));
 410                                 // invalid height (negative)
 411                                 Assert.AreEqual (Status.OutOfMemory, GdipGetImageThumbnail (image, 10, 0x8000000, out ptr, IntPtr.Zero, IntPtr.Zero));
 412                         }
 413                         finally {
 414                                 GdipDisposeImage (image);
 415                         }
 416                 }
 417
 418                 // PathGradientBrush
 419
 420                 [DllImport ("gdiplus.dll")]
 421                 static internal extern Status GdipCreatePathGradient (PointF[] points, int count, WrapMode wrapMode, out IntPtr brush);
 422
 423                 [DllImport ("gdiplus.dll")]
 424                 static internal extern Status GdipCreatePathGradientFromPath (IntPtr path, out IntPtr brush);
 425
 426                 [DllImport ("gdiplus.dll")]
 427                 static internal extern Status GdipGetPathGradientBlendCount (IntPtr brush, out int count);
 428
 429                 [DllImport ("gdiplus.dll")]
 430                 static internal extern Status GdipGetPathGradientPresetBlend (IntPtr brush, int[] blend, float[] positions, int count);
 431
 432
 433                 [Test]
 434                 public void CreatePathGradient ()
 435                 {
 436                         PointF[] points = null;
 437                         IntPtr brush;
 438                         Assert.AreEqual (Status.OutOfMemory, GdipCreatePathGradient (points, 0, WrapMode.Clamp, out brush), "null");
 439
 440                         points = new PointF [0];
 441                         Assert.AreEqual (Status.OutOfMemory, GdipCreatePathGradient (points, 0, WrapMode.Clamp, out brush), "empty");
 442
 443                         points = new PointF[1];
 444                         Assert.AreEqual (Status.OutOfMemory, GdipCreatePathGradient (points, 1, WrapMode.Clamp, out brush), "one");
 445
 446                         points = new PointF[2] { new PointF (1, 2), new PointF (20, 30) };
 447                         Assert.AreEqual (Status.Ok, GdipCreatePathGradient (points, 2, WrapMode.Clamp, out brush), "two");
 448                         Assert.IsTrue (brush != IntPtr.Zero, "Handle");
 449
 450                         int count;
 451                         Assert.AreEqual (Status.Ok, GdipGetPathGradientBlendCount (brush, out count), "GdipGetPathGradientBlendCount");
 452                         Assert.AreEqual (1, count, "blend count");
 453
 454                         int[] colors = new int[count];
 455                         float[] positions = new float[count];
 456                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathGradientPresetBlend (brush, colors, positions, count), "GdipGetPathGradientBlend");
 457                         // can't call that for 1 count!
 458
 459                         Assert.AreEqual (Status.Ok, GdipDeleteBrush (brush), "GdipDeleteBrush");
 460                 }
 461
 462                 [Test]
 463                 public void CreatePathGradient_FromPath_Line ()
 464                 {
 465                         IntPtr path;
 466                         Assert.AreEqual (Status.Ok, GdipCreatePath (FillMode.Alternate, out path), "GdipCreatePath");
 467
 468                         IntPtr brush;
 469                         Assert.AreEqual (Status.OutOfMemory, GdipCreatePathGradientFromPath (IntPtr.Zero, out brush), "null");
 470                         Assert.AreEqual (Status.OutOfMemory, GdipCreatePathGradientFromPath (path, out brush), "empty path");
 471
 472                         Assert.AreEqual (Status.Ok, GdipAddPathLine (path, 1, 1, 10, 10), "GdipAddPathLine");
 473
 474                         Assert.AreEqual (Status.Ok, GdipCreatePathGradientFromPath (path, out brush), "path");
 475                         Assert.IsTrue (brush != IntPtr.Zero, "Handle");
 476
 477                         int count;
 478                         Assert.AreEqual (Status.Ok, GdipGetPathGradientBlendCount (brush, out count), "GdipGetPathGradientBlendCount");
 479                         Assert.AreEqual (1, count, "blend count");
 480
 481                         int[] colors = new int[count];
 482                         float[] positions = new float[count];
 483                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathGradientPresetBlend (brush, colors, positions, count), "GdipGetPathGradientBlend");
 484
 485                         Assert.AreEqual (Status.Ok, GdipDeleteBrush (brush), "GdipDeleteBrush");
 486                         Assert.AreEqual (Status.Ok, GdipDeletePath (path), "GdipDeletePath");
 487                 }
 488
 489                 [Test]
 490                 public void CreatePathGradient_FromPath_Lines ()
 491                 {
 492                         IntPtr path;
 493                         Assert.AreEqual (Status.Ok, GdipCreatePath (FillMode.Alternate, out path), "GdipCreatePath");
 494
 495                         PointF[] pts_2f = new PointF[2] { new PointF (2f, 4f), new PointF (10f, 30f) };
 496                         Assert.AreEqual (Status.Ok, GdipAddPathLine2 (path, pts_2f, pts_2f.Length), "GdipAddPathLine2");
 497
 498                         IntPtr brush;
 499                         Assert.AreEqual (Status.Ok, GdipCreatePathGradientFromPath (path, out brush), "path");
 500                         Assert.IsTrue (brush != IntPtr.Zero, "Handle");
 501
 502                         int count;
 503                         Assert.AreEqual (Status.Ok, GdipGetPathGradientBlendCount (brush, out count), "GdipGetPathGradientBlendCount");
 504                         Assert.AreEqual (1, count, "blend count");
 505
 506                         int[] colors = new int[count];
 507                         float[] positions = new float[count];
 508                         Assert.AreEqual (Status.InvalidParameter, GdipGetPathGradientPresetBlend (brush, colors, positions, count), "GdipGetPathGradientBlend");
 509
 510                         Assert.AreEqual (Status.Ok, GdipDeleteBrush (brush), "GdipDeleteBrush");
 511                         Assert.AreEqual (Status.Ok, GdipDeletePath (path), "GdipDeletePath");
 512                 }
 513
 514                 // Pen
 515
 516                 [DllImport ("gdiplus.dll")]
 517                 internal static extern Status GdipCreatePen1 (int argb, float width, Unit unit, out IntPtr pen);
 518
 519                 [DllImport ("gdiplus.dll")]
 520                 internal static extern Status GdipGetPenDashStyle (IntPtr pen, out DashStyle dashStyle);
 521
 522                 [DllImport ("gdiplus.dll")]
 523                 internal static extern Status GdipSetPenDashStyle (IntPtr pen, DashStyle dashStyle);
 524
 525                 [DllImport ("gdiplus.dll")]
 526                 internal static extern Status GdipGetPenDashCount (IntPtr pen, out int count);
 527
 528                 [DllImport ("gdiplus.dll")]
 529                 internal static extern Status GdipGetPenDashArray (IntPtr pen, float[] dash, int count);
 530
 531                 [DllImport ("gdiplus.dll")]
 532                 internal static extern Status GdipDeletePen (IntPtr pen);
 533
 534                 [Test]
 535                 public void CreatePen ()
 536                 {
 537                         IntPtr pen;
 538                         Assert.AreEqual (Status.Ok, GdipCreatePen1 (0, 0f, Unit.UnitWorld, out pen), "GdipCreatePen1");
 539                         Assert.IsTrue (pen != IntPtr.Zero, "pen");
 540
 541                         DashStyle ds;
 542                         Assert.AreEqual (Status.Ok, GdipGetPenDashStyle (pen, out ds), "GdipGetPenDashStyle");
 543                         Assert.AreEqual (Status.InvalidParameter, GdipGetPenDashStyle (IntPtr.Zero, out ds), "GdipGetPenDashStyle-null");
 544
 545                         ds = DashStyle.Custom;
 546                         Assert.AreEqual (Status.Ok, GdipSetPenDashStyle (pen, ds), "GdipSetPenDashStyle");
 547                         Assert.AreEqual (Status.InvalidParameter, GdipSetPenDashStyle (IntPtr.Zero, ds), "GdipSetPenDashStyle-null");
 548
 549                         int count;
 550                         Assert.AreEqual (Status.Ok, GdipGetPenDashCount (pen, out count), "GdipGetPenDashCount");
 551                         Assert.AreEqual (Status.InvalidParameter, GdipGetPenDashCount (IntPtr.Zero, out count), "GdipGetPenDashCount-null");
 552                         Assert.AreEqual (0, count, "count");
 553
 554                         float[] dash = new float[count];
 555                         Assert.AreEqual (Status.OutOfMemory, GdipGetPenDashArray (pen, dash, count), "GdipGetPenDashArray");
 556                         Assert.AreEqual (Status.InvalidParameter, GdipGetPenDashArray (IntPtr.Zero, dash, count), "GdipGetPenDashArray-null-pen");
 557                         Assert.AreEqual (Status.InvalidParameter, GdipGetPenDashArray (pen, null, count), "GdipGetPenDashArray-null-dash");
 558
 559                         Assert.AreEqual (Status.Ok, GdipDeletePen (pen), "GdipDeletePen");
 560                         Assert.AreEqual (Status.InvalidParameter, GdipDeletePen (IntPtr.Zero), "GdipDeletePen-null");
 561                 }
 562
 563                 // Region
 564
 565                 [DllImport ("gdiplus.dll")]
 566                 static internal extern Status GdipCreateRegionRgnData (byte[] data, int size, out IntPtr region);
 567
 568                 [Test]
 569                 public void CreateRegionRgnData ()
 570                 {
 571                         IntPtr region;
 572                         Assert.AreEqual (Status.InvalidParameter, GdipCreateRegionRgnData (null, 0, out region));
 573
 574                         byte[] data = new byte[0];
 575                         Assert.AreEqual (Status.GenericError, GdipCreateRegionRgnData (data, 0, out region));
 576                 }
 577         }
 578 }