Mercurial > projects > dwt-win
annotate dwt/graphics/Path.d @ 213:36f5cb12e1a2
Update to SWT 3.4M7
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 17 May 2008 17:34:28 +0200 |
| parents | ab60f3309436 |
| children | fd9c62a2998e |
| rev | line source |
|---|---|
| 25 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 26 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 25 | 12 *******************************************************************************/ |
| 13 module dwt.graphics.Path; | |
| 14 | |
| 15 import dwt.internal.gdip.Gdip; | |
| 16 | |
| 17 import dwt.DWT; | |
| 18 import dwt.DWTError; | |
| 19 import dwt.DWTException; | |
| 20 import dwt.internal.gdip.Gdip; | |
| 21 import dwt.internal.win32.OS; | |
| 22 | |
| 26 | 23 import dwt.graphics.Resource; |
| 24 import dwt.graphics.Device; | |
| 25 import dwt.graphics.Font; | |
| 26 import dwt.graphics.GC; | |
| 27 import dwt.graphics.GCData; | |
| 28 import dwt.graphics.PathData; | |
| 29 | |
| 30 import dwt.dwthelper.System; | |
| 31 import tango.text.convert.Format; | |
|
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32 import dwt.dwthelper.utils; |
| 26 | 33 |
| 25 | 34 /** |
| 35 * Instances of this class represent paths through the two-dimensional | |
| 36 * coordinate system. Paths do not have to be continuous, and can be | |
| 37 * described using lines, rectangles, arcs, cubic or quadratic bezier curves, | |
| 38 * glyphs, or other paths. | |
| 39 * <p> | |
| 40 * Application code must explicitly invoke the <code>Path.dispose()</code> | |
| 41 * method to release the operating system resources managed by each instance | |
| 42 * when those instances are no longer required. | |
| 43 * </p> | |
| 44 * <p> | |
| 45 * This class requires the operating system's advanced graphics subsystem | |
| 46 * which may not be available on some platforms. | |
| 47 * </p> | |
| 48 * | |
| 49 * @since 3.1 | |
| 50 */ | |
| 26 | 51 public class Path : Resource { |
| 25 | 52 |
| 213 | 53 alias Resource.init_ init_; |
| 54 | |
| 25 | 55 /** |
| 56 * the OS resource for the Path | |
| 57 * (Warning: This field is platform dependent) | |
| 58 * <p> | |
| 59 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT | |
| 60 * public API. It is marked public only so that it can be shared | |
| 61 * within the packages provided by DWT. It is not available on all | |
| 62 * platforms and should never be accessed from application code. | |
| 63 * </p> | |
| 64 */ | |
|
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65 public Gdip.Path handle; |
| 25 | 66 |
| 26 | 67 Gdip.PointF currentPoint, startPoint; |
| 25 | 68 |
| 69 /** | |
| 70 * Constructs a new empty Path. | |
| 71 * <p> | |
| 72 * This operation requires the operating system's advanced | |
| 73 * graphics subsystem which may not be available on some | |
| 74 * platforms. | |
| 75 * </p> | |
| 76 * | |
| 77 * @param device the device on which to allocate the path | |
| 78 * | |
| 79 * @exception IllegalArgumentException <ul> | |
| 80 * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> | |
| 81 * </ul> | |
| 82 * @exception DWTException <ul> | |
| 83 * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> | |
| 84 * </ul> | |
| 85 * @exception DWTError <ul> | |
| 86 * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> | |
| 87 * </ul> | |
| 88 * | |
| 89 * @see #dispose() | |
| 90 */ | |
| 26 | 91 public this (Device device) { |
| 213 | 92 super(device); |
| 93 this.device.checkGDIP(); | |
| 25 | 94 handle = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); |
| 26 | 95 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
| 213 | 96 init_(); |
| 97 } | |
| 98 | |
| 99 /** | |
| 100 * Constructs a new Path that is a copy of <code>path</code>. If | |
| 101 * <code>flatness</code> is less than or equal to zero, an unflatten | |
| 102 * copy of the path is created. Otherwise, it specifies the maximum | |
| 103 * error between the path and its flatten copy. Smaller numbers give | |
| 104 * better approximation. | |
| 105 * <p> | |
| 106 * This operation requires the operating system's advanced | |
| 107 * graphics subsystem which may not be available on some | |
| 108 * platforms. | |
| 109 * </p> | |
| 110 * | |
| 111 * @param device the device on which to allocate the path | |
| 112 * @param path the path to make a copy | |
| 113 * @param flatness the flatness value | |
| 114 * | |
| 115 * @exception IllegalArgumentException <ul> | |
| 116 * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> | |
| 117 * <li>ERROR_NULL_ARGUMENT - if the path is null</li> | |
| 118 * <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li> | |
| 119 * </ul> | |
| 120 * @exception DWTException <ul> | |
| 121 * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> | |
| 122 * </ul> | |
| 123 * @exception DWTError <ul> | |
| 124 * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> | |
| 125 * </ul> | |
| 126 * | |
| 127 * @see #dispose() | |
| 128 * @since 3.4 | |
| 129 */ | |
| 130 public this (Device device, Path path, float flatness) { | |
| 131 super(device); | |
| 132 if (path is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 133 if (path.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 134 flatness = Math.max(0, flatness); | |
| 135 handle = Gdip.GraphicsPath_Clone(path.handle); | |
| 136 if (flatness !is 0) Gdip.GraphicsPath_Flatten(handle, null, flatness); | |
| 137 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 138 init_(); | |
| 139 } | |
| 140 | |
| 141 /** | |
| 142 * Constructs a new with the specifed PathData. | |
| 143 * <p> | |
| 144 * This operation requires the operating system's advanced | |
| 145 * graphics subsystem which may not be available on some | |
| 146 * platforms. | |
| 147 * </p> | |
| 148 * | |
| 149 * @param device the device on which to allocate the path | |
| 150 * @param data the data for the path | |
| 151 * | |
| 152 * @exception IllegalArgumentException <ul> | |
| 153 * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> | |
| 154 * <li>ERROR_NULL_ARGUMENT - if the data is null</li> | |
| 155 * </ul> | |
| 156 * @exception DWTException <ul> | |
| 157 * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> | |
| 158 * </ul> | |
| 159 * @exception DWTError <ul> | |
| 160 * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> | |
| 161 * </ul> | |
| 162 * | |
| 163 * @see #dispose() | |
| 164 * @since 3.4 | |
| 165 */ | |
| 166 public this (Device device, PathData data) { | |
| 167 this(device); | |
| 168 if (data is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 169 init_(data); | |
| 25 | 170 } |
| 171 | |
| 172 /** | |
| 173 * Adds to the receiver a circular or elliptical arc that lies within | |
| 174 * the specified rectangular area. | |
| 175 * <p> | |
| 176 * The resulting arc begins at <code>startAngle</code> and extends | |
| 177 * for <code>arcAngle</code> degrees. | |
| 178 * Angles are interpreted such that 0 degrees is at the 3 o'clock | |
| 179 * position. A positive value indicates a counter-clockwise rotation | |
| 180 * while a negative value indicates a clockwise rotation. | |
| 181 * </p><p> | |
| 182 * The center of the arc is the center of the rectangle whose origin | |
| 183 * is (<code>x</code>, <code>y</code>) and whose size is specified by the | |
| 184 * <code>width</code> and <code>height</code> arguments. | |
| 185 * </p><p> | |
| 186 * The resulting arc covers an area <code>width + 1</code> pixels wide | |
| 187 * by <code>height + 1</code> pixels tall. | |
| 188 * </p> | |
| 189 * | |
| 190 * @param x the x coordinate of the upper-left corner of the arc | |
| 191 * @param y the y coordinate of the upper-left corner of the arc | |
| 192 * @param width the width of the arc | |
| 193 * @param height the height of the arc | |
| 194 * @param startAngle the beginning angle | |
| 195 * @param arcAngle the angular extent of the arc, relative to the start angle | |
| 196 * | |
| 197 * @exception DWTException <ul> | |
| 198 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 199 * </ul> | |
| 200 */ | |
| 201 public void addArc(float x, float y, float width, float height, float startAngle, float arcAngle) { | |
| 202 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 203 if (width < 0) { | |
| 204 x = x + width; | |
| 205 width = -width; | |
| 206 } | |
| 207 if (height < 0) { | |
| 208 y = y + height; | |
| 209 height = -height; | |
| 210 } | |
| 211 if (width is 0 || height is 0 || arcAngle is 0) return; | |
| 212 if (width is height) { | |
|
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parents:
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changeset
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213 Gdip.GraphicsPath_AddArcF(handle, x, y, width, height, -startAngle, -arcAngle); |
| 25 | 214 } else { |
| 26 | 215 auto path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); |
| 216 if (path is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 217 auto matrix = Gdip.Matrix_new(width, 0, 0, height, x, y); | |
| 218 if (matrix is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 25 | 219 Gdip.GraphicsPath_AddArc(path, 0, 0, 1, 1, -startAngle, -arcAngle); |
| 220 Gdip.GraphicsPath_Transform(path, matrix); | |
| 221 Gdip.GraphicsPath_AddPath(handle, path, true); | |
| 222 Gdip.Matrix_delete(matrix); | |
| 223 Gdip.GraphicsPath_delete(path); | |
| 224 } | |
| 225 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 226 } | |
| 227 | |
| 228 /** | |
| 229 * Adds to the receiver the path described by the parameter. | |
| 230 * | |
| 231 * @param path the path to add to the receiver | |
| 232 * | |
| 233 * @exception IllegalArgumentException <ul> | |
| 234 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 235 * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> | |
| 236 * </ul> | |
| 237 * @exception DWTException <ul> | |
| 238 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 239 * </ul> | |
| 240 */ | |
| 241 public void addPath(Path path) { | |
| 242 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 243 if (path is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 244 if (path.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 245 //TODO - expose connect? | |
| 246 Gdip.GraphicsPath_AddPath(handle, path.handle, false); | |
| 247 currentPoint.X = path.currentPoint.X; | |
| 248 currentPoint.Y = path.currentPoint.Y; | |
| 249 } | |
| 250 | |
| 251 /** | |
| 252 * Adds to the receiver the rectangle specified by x, y, width and height. | |
| 253 * | |
| 254 * @param x the x coordinate of the rectangle to add | |
| 255 * @param y the y coordinate of the rectangle to add | |
| 256 * @param width the width of the rectangle to add | |
| 257 * @param height the height of the rectangle to add | |
| 258 * | |
| 259 * @exception DWTException <ul> | |
| 260 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 261 * </ul> | |
| 262 */ | |
| 263 public void addRectangle(float x, float y, float width, float height) { | |
| 264 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 26 | 265 Gdip.RectF rect; |
| 25 | 266 rect.X = x; |
| 267 rect.Y = y; | |
| 268 rect.Width = width; | |
| 269 rect.Height = height; | |
|
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parents:
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diff
changeset
|
270 Gdip.GraphicsPath_AddRectangle(handle, rect); |
| 25 | 271 currentPoint.X = x; |
| 272 currentPoint.Y = y; | |
| 273 } | |
| 274 | |
| 275 /** | |
| 276 * Adds to the receiver the pattern of glyphs generated by drawing | |
| 277 * the given string using the given font starting at the point (x, y). | |
| 278 * | |
| 279 * @param string the text to use | |
| 280 * @param x the x coordinate of the starting point | |
| 281 * @param y the y coordinate of the starting point | |
| 282 * @param font the font to use | |
| 283 * | |
| 284 * @exception IllegalArgumentException <ul> | |
| 285 * <li>ERROR_NULL_ARGUMENT - if the font is null</li> | |
| 286 * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> | |
| 287 * </ul> | |
| 288 * @exception DWTException <ul> | |
| 289 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 290 * </ul> | |
| 291 */ | |
|
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292 public void addString(String string, float x, float y, Font font) { |
| 25 | 293 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
| 294 if (font is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 295 if (font.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 26 | 296 wchar[] wstr = StrToWCHARs( string ); |
| 297 wchar* buffer = wstr.ptr; | |
| 298 int length = wstr.length; | |
| 299 auto hDC = device.internal_new_GC(null); | |
| 300 auto gdipFont = GC.createGdipFont(hDC, font.handle); | |
| 301 Gdip.PointF point; | |
| 25 | 302 point.X = x - (Gdip.Font_GetSize(gdipFont) / 6); |
| 303 point.Y = y; | |
| 26 | 304 auto family = Gdip.FontFamily_new(); |
| 25 | 305 Gdip.Font_GetFamily(gdipFont, family); |
| 306 int style = Gdip.Font_GetStyle(gdipFont); | |
| 307 float size = Gdip.Font_GetSize(gdipFont); | |
| 26 | 308 Gdip.GraphicsPath_AddString(handle, buffer, length, family, style, size, point, null); |
| 25 | 309 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| 310 Gdip.FontFamily_delete(family); | |
| 311 Gdip.Font_delete(gdipFont); | |
| 312 device.internal_dispose_GC(hDC, null); | |
| 313 } | |
| 314 | |
| 315 /** | |
| 316 * Closes the current sub path by adding to the receiver a line | |
| 317 * from the current point of the path back to the starting point | |
| 318 * of the sub path. | |
| 319 * | |
| 320 * @exception DWTException <ul> | |
| 321 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 322 * </ul> | |
| 323 */ | |
| 324 public void close() { | |
| 325 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 326 Gdip.GraphicsPath_CloseFigure(handle); | |
| 327 /* | |
| 328 * Feature in GDI+. CloseFigure() does affect the last | |
| 329 * point, so GetLastPoint() does not return the starting | |
| 330 * point of the subpath after calling CloseFigure(). The | |
| 331 * fix is to remember the subpath starting point and use | |
| 332 * it instead. | |
| 333 */ | |
| 334 currentPoint.X = startPoint.X; | |
| 335 currentPoint.Y = startPoint.Y; | |
| 336 } | |
| 337 | |
| 338 /** | |
| 339 * Returns <code>true</code> if the specified point is contained by | |
| 340 * the receiver and false otherwise. | |
| 341 * <p> | |
| 342 * If outline is <code>true</code>, the point (x, y) checked for containment in | |
| 343 * the receiver's outline. If outline is <code>false</code>, the point is | |
| 344 * checked to see if it is contained within the bounds of the (closed) area | |
| 345 * covered by the receiver. | |
| 346 * | |
| 347 * @param x the x coordinate of the point to test for containment | |
| 348 * @param y the y coordinate of the point to test for containment | |
| 349 * @param gc the GC to use when testing for containment | |
| 350 * @param outline controls whether to check the outline or contained area of the path | |
| 351 * @return <code>true</code> if the path contains the point and <code>false</code> otherwise | |
| 352 * | |
| 353 * @exception IllegalArgumentException <ul> | |
| 354 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 355 * <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</li> | |
| 356 * </ul> | |
| 357 * @exception DWTException <ul> | |
| 358 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 359 * </ul> | |
| 360 */ | |
| 361 public bool contains(float x, float y, GC gc, bool outline) { | |
| 362 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 363 if (gc is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 364 if (gc.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 365 //TODO - should use GC transformation | |
| 366 gc.initGdip(); | |
| 367 gc.checkGC(GC.LINE_CAP | GC.LINE_JOIN | GC.LINE_STYLE | GC.LINE_WIDTH); | |
| 368 int mode = OS.GetPolyFillMode(gc.handle) is OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate; | |
| 369 Gdip.GraphicsPath_SetFillMode(handle, mode); | |
| 370 if (outline) { | |
| 371 return Gdip.GraphicsPath_IsOutlineVisible(handle, x, y, gc.data.gdipPen, gc.data.gdipGraphics); | |
| 372 } else { | |
| 373 return Gdip.GraphicsPath_IsVisible(handle, x, y, gc.data.gdipGraphics); | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 /** | |
| 378 * Adds to the receiver a cubic bezier curve based on the parameters. | |
| 379 * | |
| 380 * @param cx1 the x coordinate of the first control point of the spline | |
| 381 * @param cy1 the y coordinate of the first control of the spline | |
| 382 * @param cx2 the x coordinate of the second control of the spline | |
| 383 * @param cy2 the y coordinate of the second control of the spline | |
| 384 * @param x the x coordinate of the end point of the spline | |
| 385 * @param y the y coordinate of the end point of the spline | |
| 386 * | |
| 387 * @exception DWTException <ul> | |
| 388 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 389 * </ul> | |
| 390 */ | |
| 391 public void cubicTo(float cx1, float cy1, float cx2, float cy2, float x, float y) { | |
| 392 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 393 Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); | |
| 394 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 395 } | |
| 396 | |
| 213 | 397 void destroy() { |
| 25 | 398 Gdip.GraphicsPath_delete(handle); |
| 26 | 399 handle = null; |
| 25 | 400 } |
| 401 | |
| 402 /** | |
| 403 * Replaces the first four elements in the parameter with values that | |
| 404 * describe the smallest rectangle that will completely contain the | |
| 405 * receiver (i.e. the bounding box). | |
| 406 * | |
| 407 * @param bounds the array to hold the result | |
| 408 * | |
| 409 * @exception IllegalArgumentException <ul> | |
| 410 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 411 * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the bounding box</li> | |
| 412 * </ul> | |
| 413 * @exception DWTException <ul> | |
| 414 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 415 * </ul> | |
| 416 */ | |
| 417 public void getBounds(float[] bounds) { | |
| 418 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 419 if (bounds is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 420 if (bounds.length < 4) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 26 | 421 Gdip.RectF rect; |
| 422 Gdip.GraphicsPath_GetBounds(handle, rect, null, null); | |
| 25 | 423 bounds[0] = rect.X; |
| 424 bounds[1] = rect.Y; | |
| 425 bounds[2] = rect.Width; | |
| 426 bounds[3] = rect.Height; | |
| 427 } | |
| 428 | |
| 429 /** | |
| 430 * Replaces the first two elements in the parameter with values that | |
| 431 * describe the current point of the path. | |
| 432 * | |
| 433 * @param point the array to hold the result | |
| 434 * | |
| 435 * @exception IllegalArgumentException <ul> | |
| 436 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 437 * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the end point</li> | |
| 438 * </ul> | |
| 439 * @exception DWTException <ul> | |
| 440 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 441 * </ul> | |
| 442 */ | |
| 443 public void getCurrentPoint(float[] point) { | |
| 444 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 445 if (point is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 446 if (point.length < 2) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 447 point[0] = currentPoint.X; | |
| 448 point[1] = currentPoint.Y; | |
| 449 } | |
| 450 | |
| 451 /** | |
| 452 * Returns a device independent representation of the receiver. | |
| 453 * | |
| 454 * @return the PathData for the receiver | |
| 455 * | |
| 456 * @exception DWTException <ul> | |
| 457 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 458 * </ul> | |
| 459 * | |
| 460 * @see PathData | |
| 461 */ | |
| 462 public PathData getPathData() { | |
| 463 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 464 int count = Gdip.GraphicsPath_GetPointCount(handle); | |
| 465 byte[] gdipTypes = new byte[count]; | |
| 466 float[] points = new float[count * 2]; | |
| 213 | 467 Gdip.GraphicsPath_GetPathTypes(handle, gdipTypes.ptr, count); |
| 468 Gdip.GraphicsPath_GetPathPoints(handle, cast(Gdip.PointF*)points.ptr, count); | |
| 25 | 469 byte[] types = new byte[count * 2]; |
| 470 int index = 0, typesIndex = 0; | |
| 471 while (index < count) { | |
| 472 byte type = gdipTypes[index]; | |
| 473 bool close = false; | |
| 474 switch (type & Gdip.PathPointTypePathTypeMask) { | |
| 475 case Gdip.PathPointTypeStart: | |
| 476 types[typesIndex++] = DWT.PATH_MOVE_TO; | |
| 477 close = (type & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 478 index += 1; | |
| 479 break; | |
| 480 case Gdip.PathPointTypeLine: | |
| 481 types[typesIndex++] = DWT.PATH_LINE_TO; | |
| 482 close = (type & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 483 index += 1; | |
| 484 break; | |
| 485 case Gdip.PathPointTypeBezier: | |
| 486 types[typesIndex++] = DWT.PATH_CUBIC_TO; | |
| 487 close = (gdipTypes[index + 2] & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 488 index += 3; | |
| 489 break; | |
| 490 default: | |
| 491 index++; | |
| 492 } | |
| 493 if (close) { | |
| 494 types[typesIndex++] = DWT.PATH_CLOSE; | |
| 495 } | |
| 496 } | |
| 497 if (typesIndex !is types.length) { | |
| 498 byte[] newTypes = new byte[typesIndex]; | |
| 499 System.arraycopy(types, 0, newTypes, 0, typesIndex); | |
| 500 types = newTypes; | |
| 501 } | |
| 502 PathData result = new PathData(); | |
| 503 result.types = types; | |
| 504 result.points = points; | |
| 505 return result; | |
| 506 } | |
| 507 | |
| 508 /** | |
| 509 * Adds to the receiver a line from the current point to | |
| 510 * the point specified by (x, y). | |
| 511 * | |
| 512 * @param x the x coordinate of the end of the line to add | |
| 513 * @param y the y coordinate of the end of the line to add | |
| 514 * | |
| 515 * @exception DWTException <ul> | |
| 516 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 517 * </ul> | |
| 518 */ | |
| 519 public void lineTo(float x, float y) { | |
| 520 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 521 Gdip.GraphicsPath_AddLine(handle, currentPoint.X, currentPoint.Y, x, y); | |
| 522 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 523 } | |
| 524 | |
| 213 | 525 void init_(PathData data) { |
| 526 byte[] types = data.types; | |
| 527 float[] points = data.points; | |
| 528 for (int i = 0, j = 0; i < types.length; i++) { | |
| 529 switch (types[i]) { | |
| 530 case DWT.PATH_MOVE_TO: | |
| 531 moveTo(points[j++], points[j++]); | |
| 532 break; | |
| 533 case DWT.PATH_LINE_TO: | |
| 534 lineTo(points[j++], points[j++]); | |
| 535 break; | |
| 536 case DWT.PATH_CUBIC_TO: | |
| 537 cubicTo(points[j++], points[j++], points[j++], points[j++], points[j++], points[j++]); | |
| 538 break; | |
| 539 case DWT.PATH_QUAD_TO: | |
| 540 quadTo(points[j++], points[j++], points[j++], points[j++]); | |
| 541 break; | |
| 542 case DWT.PATH_CLOSE: | |
| 543 close(); | |
| 544 break; | |
| 545 default: | |
| 546 dispose(); | |
| 547 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 548 } | |
| 549 } | |
| 550 } | |
| 551 | |
| 25 | 552 /** |
| 553 * Returns <code>true</code> if the Path has been disposed, | |
| 554 * and <code>false</code> otherwise. | |
| 555 * <p> | |
| 556 * This method gets the dispose state for the Path. | |
| 557 * When a Path has been disposed, it is an error to | |
| 558 * invoke any other method using the Path. | |
| 559 * | |
| 560 * @return <code>true</code> when the Path is disposed, and <code>false</code> otherwise | |
| 561 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
26
diff
changeset
|
562 override public bool isDisposed() { |
| 26 | 563 return handle is null; |
| 25 | 564 } |
| 565 | |
| 566 /** | |
| 567 * Sets the current point of the receiver to the point | |
| 568 * specified by (x, y). Note that this starts a new | |
| 569 * sub path. | |
| 570 * | |
| 571 * @param x the x coordinate of the new end point | |
| 572 * @param y the y coordinate of the new end point | |
| 573 * | |
| 574 * @exception DWTException <ul> | |
| 575 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 576 * </ul> | |
| 577 */ | |
| 578 public void moveTo(float x, float y) { | |
| 579 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 580 Gdip.GraphicsPath_StartFigure(handle); | |
| 581 currentPoint.X = startPoint.X = x; | |
| 582 currentPoint.Y = startPoint.Y = y; | |
| 583 } | |
| 584 | |
| 585 /** | |
| 586 * Adds to the receiver a quadratic curve based on the parameters. | |
| 587 * | |
| 588 * @param cx the x coordinate of the control point of the spline | |
| 589 * @param cy the y coordinate of the control point of the spline | |
| 590 * @param x the x coordinate of the end point of the spline | |
| 591 * @param y the y coordinate of the end point of the spline | |
| 592 * | |
| 593 * @exception DWTException <ul> | |
| 594 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 595 * </ul> | |
| 596 */ | |
| 597 public void quadTo(float cx, float cy, float x, float y) { | |
| 598 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 599 float cx1 = currentPoint.X + 2 * (cx - currentPoint.X) / 3; | |
| 600 float cy1 = currentPoint.Y + 2 * (cy - currentPoint.Y) / 3; | |
| 601 float cx2 = cx1 + (x - currentPoint.X) / 3; | |
| 602 float cy2 = cy1 + (y - currentPoint.Y) / 3; | |
| 603 Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); | |
| 604 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 605 } | |
| 606 | |
| 607 /** | |
| 608 * Returns a string containing a concise, human-readable | |
| 609 * description of the receiver. | |
| 610 * | |
| 611 * @return a string representation of the receiver | |
| 612 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
53
diff
changeset
|
613 override public String toString() { |
| 25 | 614 if (isDisposed()) return "Path {*DISPOSED*}"; |
| 26 | 615 return Format( "Path {{{}}", handle ); |
| 25 | 616 } |
| 617 | |
| 618 } |