Mercurial > projects > dwt-win
annotate dwt/graphics/Path.d @ 212:ab60f3309436
reverted the char[] to String and use the an alias.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 05 May 2008 00:12:38 +0200 |
| parents | 0405e18fec7f |
| children | 36f5cb12e1a2 |
| 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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ab60f3309436
reverted the char[] to String and use the an alias.
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parents:
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diff
changeset
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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 |
| 53 /** | |
| 54 * the OS resource for the Path | |
| 55 * (Warning: This field is platform dependent) | |
| 56 * <p> | |
| 57 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT | |
| 58 * public API. It is marked public only so that it can be shared | |
| 59 * within the packages provided by DWT. It is not available on all | |
| 60 * platforms and should never be accessed from application code. | |
| 61 * </p> | |
| 62 */ | |
|
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63 public Gdip.Path handle; |
| 25 | 64 |
| 26 | 65 Gdip.PointF currentPoint, startPoint; |
| 25 | 66 |
| 67 /** | |
| 68 * Constructs a new empty Path. | |
| 69 * <p> | |
| 70 * This operation requires the operating system's advanced | |
| 71 * graphics subsystem which may not be available on some | |
| 72 * platforms. | |
| 73 * </p> | |
| 74 * | |
| 75 * @param device the device on which to allocate the path | |
| 76 * | |
| 77 * @exception IllegalArgumentException <ul> | |
| 78 * <li>ERROR_NULL_ARGUMENT - if the device is null and there is no current device</li> | |
| 79 * </ul> | |
| 80 * @exception DWTException <ul> | |
| 81 * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> | |
| 82 * </ul> | |
| 83 * @exception DWTError <ul> | |
| 84 * <li>ERROR_NO_HANDLES if a handle for the path could not be obtained</li> | |
| 85 * </ul> | |
| 86 * | |
| 87 * @see #dispose() | |
| 88 */ | |
| 26 | 89 public this (Device device) { |
| 25 | 90 if (device is null) device = Device.getDevice(); |
| 91 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 92 this.device = device; | |
| 93 device.checkGDIP(); | |
| 94 handle = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); | |
| 26 | 95 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
| 25 | 96 if (device.tracking) device.new_Object(this); |
| 97 } | |
| 98 | |
| 99 /** | |
| 100 * Adds to the receiver a circular or elliptical arc that lies within | |
| 101 * the specified rectangular area. | |
| 102 * <p> | |
| 103 * The resulting arc begins at <code>startAngle</code> and extends | |
| 104 * for <code>arcAngle</code> degrees. | |
| 105 * Angles are interpreted such that 0 degrees is at the 3 o'clock | |
| 106 * position. A positive value indicates a counter-clockwise rotation | |
| 107 * while a negative value indicates a clockwise rotation. | |
| 108 * </p><p> | |
| 109 * The center of the arc is the center of the rectangle whose origin | |
| 110 * is (<code>x</code>, <code>y</code>) and whose size is specified by the | |
| 111 * <code>width</code> and <code>height</code> arguments. | |
| 112 * </p><p> | |
| 113 * The resulting arc covers an area <code>width + 1</code> pixels wide | |
| 114 * by <code>height + 1</code> pixels tall. | |
| 115 * </p> | |
| 116 * | |
| 117 * @param x the x coordinate of the upper-left corner of the arc | |
| 118 * @param y the y coordinate of the upper-left corner of the arc | |
| 119 * @param width the width of the arc | |
| 120 * @param height the height of the arc | |
| 121 * @param startAngle the beginning angle | |
| 122 * @param arcAngle the angular extent of the arc, relative to the start angle | |
| 123 * | |
| 124 * @exception DWTException <ul> | |
| 125 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 126 * </ul> | |
| 127 */ | |
| 128 public void addArc(float x, float y, float width, float height, float startAngle, float arcAngle) { | |
| 129 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 130 if (width < 0) { | |
| 131 x = x + width; | |
| 132 width = -width; | |
| 133 } | |
| 134 if (height < 0) { | |
| 135 y = y + height; | |
| 136 height = -height; | |
| 137 } | |
| 138 if (width is 0 || height is 0 || arcAngle is 0) return; | |
| 139 if (width is height) { | |
|
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Gdiplus implemented - test build of dwt.lib successful; updated graphics package as necessary
John Reimer <terminal.node@gmail.com
parents:
48
diff
changeset
|
140 Gdip.GraphicsPath_AddArcF(handle, x, y, width, height, -startAngle, -arcAngle); |
| 25 | 141 } else { |
| 26 | 142 auto path = Gdip.GraphicsPath_new(Gdip.FillModeAlternate); |
| 143 if (path is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 144 auto matrix = Gdip.Matrix_new(width, 0, 0, height, x, y); | |
| 145 if (matrix is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
| 25 | 146 Gdip.GraphicsPath_AddArc(path, 0, 0, 1, 1, -startAngle, -arcAngle); |
| 147 Gdip.GraphicsPath_Transform(path, matrix); | |
| 148 Gdip.GraphicsPath_AddPath(handle, path, true); | |
| 149 Gdip.Matrix_delete(matrix); | |
| 150 Gdip.GraphicsPath_delete(path); | |
| 151 } | |
| 152 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 153 } | |
| 154 | |
| 155 /** | |
| 156 * Adds to the receiver the path described by the parameter. | |
| 157 * | |
| 158 * @param path the path to add to the receiver | |
| 159 * | |
| 160 * @exception IllegalArgumentException <ul> | |
| 161 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 162 * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> | |
| 163 * </ul> | |
| 164 * @exception DWTException <ul> | |
| 165 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 166 * </ul> | |
| 167 */ | |
| 168 public void addPath(Path path) { | |
| 169 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 170 if (path is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 171 if (path.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 172 //TODO - expose connect? | |
| 173 Gdip.GraphicsPath_AddPath(handle, path.handle, false); | |
| 174 currentPoint.X = path.currentPoint.X; | |
| 175 currentPoint.Y = path.currentPoint.Y; | |
| 176 } | |
| 177 | |
| 178 /** | |
| 179 * Adds to the receiver the rectangle specified by x, y, width and height. | |
| 180 * | |
| 181 * @param x the x coordinate of the rectangle to add | |
| 182 * @param y the y coordinate of the rectangle to add | |
| 183 * @param width the width of the rectangle to add | |
| 184 * @param height the height of the rectangle to add | |
| 185 * | |
| 186 * @exception DWTException <ul> | |
| 187 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 188 * </ul> | |
| 189 */ | |
| 190 public void addRectangle(float x, float y, float width, float height) { | |
| 191 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 26 | 192 Gdip.RectF rect; |
| 25 | 193 rect.X = x; |
| 194 rect.Y = y; | |
| 195 rect.Width = width; | |
| 196 rect.Height = height; | |
|
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Gdiplus implemented - test build of dwt.lib successful; updated graphics package as necessary
John Reimer <terminal.node@gmail.com
parents:
48
diff
changeset
|
197 Gdip.GraphicsPath_AddRectangle(handle, rect); |
| 25 | 198 currentPoint.X = x; |
| 199 currentPoint.Y = y; | |
| 200 } | |
| 201 | |
| 202 /** | |
| 203 * Adds to the receiver the pattern of glyphs generated by drawing | |
| 204 * the given string using the given font starting at the point (x, y). | |
| 205 * | |
| 206 * @param string the text to use | |
| 207 * @param x the x coordinate of the starting point | |
| 208 * @param y the y coordinate of the starting point | |
| 209 * @param font the font to use | |
| 210 * | |
| 211 * @exception IllegalArgumentException <ul> | |
| 212 * <li>ERROR_NULL_ARGUMENT - if the font is null</li> | |
| 213 * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> | |
| 214 * </ul> | |
| 215 * @exception DWTException <ul> | |
| 216 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 217 * </ul> | |
| 218 */ | |
|
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ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
53
diff
changeset
|
219 public void addString(String string, float x, float y, Font font) { |
| 25 | 220 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
| 221 if (font is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 222 if (font.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 26 | 223 wchar[] wstr = StrToWCHARs( string ); |
| 224 wchar* buffer = wstr.ptr; | |
| 225 int length = wstr.length; | |
| 226 auto hDC = device.internal_new_GC(null); | |
| 227 auto gdipFont = GC.createGdipFont(hDC, font.handle); | |
| 228 Gdip.PointF point; | |
| 25 | 229 point.X = x - (Gdip.Font_GetSize(gdipFont) / 6); |
| 230 point.Y = y; | |
| 26 | 231 auto family = Gdip.FontFamily_new(); |
| 25 | 232 Gdip.Font_GetFamily(gdipFont, family); |
| 233 int style = Gdip.Font_GetStyle(gdipFont); | |
| 234 float size = Gdip.Font_GetSize(gdipFont); | |
| 26 | 235 Gdip.GraphicsPath_AddString(handle, buffer, length, family, style, size, point, null); |
| 25 | 236 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); |
| 237 Gdip.FontFamily_delete(family); | |
| 238 Gdip.Font_delete(gdipFont); | |
| 239 device.internal_dispose_GC(hDC, null); | |
| 240 } | |
| 241 | |
| 242 /** | |
| 243 * Closes the current sub path by adding to the receiver a line | |
| 244 * from the current point of the path back to the starting point | |
| 245 * of the sub path. | |
| 246 * | |
| 247 * @exception DWTException <ul> | |
| 248 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 249 * </ul> | |
| 250 */ | |
| 251 public void close() { | |
| 252 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 253 Gdip.GraphicsPath_CloseFigure(handle); | |
| 254 /* | |
| 255 * Feature in GDI+. CloseFigure() does affect the last | |
| 256 * point, so GetLastPoint() does not return the starting | |
| 257 * point of the subpath after calling CloseFigure(). The | |
| 258 * fix is to remember the subpath starting point and use | |
| 259 * it instead. | |
| 260 */ | |
| 261 currentPoint.X = startPoint.X; | |
| 262 currentPoint.Y = startPoint.Y; | |
| 263 } | |
| 264 | |
| 265 /** | |
| 266 * Returns <code>true</code> if the specified point is contained by | |
| 267 * the receiver and false otherwise. | |
| 268 * <p> | |
| 269 * If outline is <code>true</code>, the point (x, y) checked for containment in | |
| 270 * the receiver's outline. If outline is <code>false</code>, the point is | |
| 271 * checked to see if it is contained within the bounds of the (closed) area | |
| 272 * covered by the receiver. | |
| 273 * | |
| 274 * @param x the x coordinate of the point to test for containment | |
| 275 * @param y the y coordinate of the point to test for containment | |
| 276 * @param gc the GC to use when testing for containment | |
| 277 * @param outline controls whether to check the outline or contained area of the path | |
| 278 * @return <code>true</code> if the path contains the point and <code>false</code> otherwise | |
| 279 * | |
| 280 * @exception IllegalArgumentException <ul> | |
| 281 * <li>ERROR_NULL_ARGUMENT - if the gc is null</li> | |
| 282 * <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</li> | |
| 283 * </ul> | |
| 284 * @exception DWTException <ul> | |
| 285 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 286 * </ul> | |
| 287 */ | |
| 288 public bool contains(float x, float y, GC gc, bool outline) { | |
| 289 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 290 if (gc is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 291 if (gc.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 292 //TODO - should use GC transformation | |
| 293 gc.initGdip(); | |
| 294 gc.checkGC(GC.LINE_CAP | GC.LINE_JOIN | GC.LINE_STYLE | GC.LINE_WIDTH); | |
| 295 int mode = OS.GetPolyFillMode(gc.handle) is OS.WINDING ? Gdip.FillModeWinding : Gdip.FillModeAlternate; | |
| 296 Gdip.GraphicsPath_SetFillMode(handle, mode); | |
| 297 if (outline) { | |
| 298 return Gdip.GraphicsPath_IsOutlineVisible(handle, x, y, gc.data.gdipPen, gc.data.gdipGraphics); | |
| 299 } else { | |
| 300 return Gdip.GraphicsPath_IsVisible(handle, x, y, gc.data.gdipGraphics); | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 /** | |
| 305 * Adds to the receiver a cubic bezier curve based on the parameters. | |
| 306 * | |
| 307 * @param cx1 the x coordinate of the first control point of the spline | |
| 308 * @param cy1 the y coordinate of the first control of the spline | |
| 309 * @param cx2 the x coordinate of the second control of the spline | |
| 310 * @param cy2 the y coordinate of the second control of the spline | |
| 311 * @param x the x coordinate of the end point of the spline | |
| 312 * @param y the y coordinate of the end point of the spline | |
| 313 * | |
| 314 * @exception DWTException <ul> | |
| 315 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 316 * </ul> | |
| 317 */ | |
| 318 public void cubicTo(float cx1, float cy1, float cx2, float cy2, float x, float y) { | |
| 319 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 320 Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); | |
| 321 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 322 } | |
| 323 | |
| 324 /** | |
| 325 * Disposes of the operating system resources associated with | |
| 326 * the Path. Applications must dispose of all Paths that | |
| 327 * they allocate. | |
| 328 */ | |
|
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parents:
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diff
changeset
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329 override public void dispose() { |
| 26 | 330 if (handle is null) return; |
| 25 | 331 if (device.isDisposed()) return; |
| 332 Gdip.GraphicsPath_delete(handle); | |
| 26 | 333 handle = null; |
| 25 | 334 if (device.tracking) device.dispose_Object(this); |
| 335 device = null; | |
| 336 } | |
| 337 | |
| 338 /** | |
| 339 * Replaces the first four elements in the parameter with values that | |
| 340 * describe the smallest rectangle that will completely contain the | |
| 341 * receiver (i.e. the bounding box). | |
| 342 * | |
| 343 * @param bounds the array to hold the result | |
| 344 * | |
| 345 * @exception IllegalArgumentException <ul> | |
| 346 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 347 * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the bounding box</li> | |
| 348 * </ul> | |
| 349 * @exception DWTException <ul> | |
| 350 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 351 * </ul> | |
| 352 */ | |
| 353 public void getBounds(float[] bounds) { | |
| 354 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 355 if (bounds is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 356 if (bounds.length < 4) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 26 | 357 Gdip.RectF rect; |
| 358 Gdip.GraphicsPath_GetBounds(handle, rect, null, null); | |
| 25 | 359 bounds[0] = rect.X; |
| 360 bounds[1] = rect.Y; | |
| 361 bounds[2] = rect.Width; | |
| 362 bounds[3] = rect.Height; | |
| 363 } | |
| 364 | |
| 365 /** | |
| 366 * Replaces the first two elements in the parameter with values that | |
| 367 * describe the current point of the path. | |
| 368 * | |
| 369 * @param point the array to hold the result | |
| 370 * | |
| 371 * @exception IllegalArgumentException <ul> | |
| 372 * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> | |
| 373 * <li>ERROR_INVALID_ARGUMENT - if the parameter is too small to hold the end point</li> | |
| 374 * </ul> | |
| 375 * @exception DWTException <ul> | |
| 376 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 377 * </ul> | |
| 378 */ | |
| 379 public void getCurrentPoint(float[] point) { | |
| 380 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 381 if (point is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 382 if (point.length < 2) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 383 point[0] = currentPoint.X; | |
| 384 point[1] = currentPoint.Y; | |
| 385 } | |
| 386 | |
| 387 /** | |
| 388 * Returns a device independent representation of the receiver. | |
| 389 * | |
| 390 * @return the PathData for the receiver | |
| 391 * | |
| 392 * @exception DWTException <ul> | |
| 393 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 394 * </ul> | |
| 395 * | |
| 396 * @see PathData | |
| 397 */ | |
| 398 public PathData getPathData() { | |
| 399 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 400 int count = Gdip.GraphicsPath_GetPointCount(handle); | |
| 401 byte[] gdipTypes = new byte[count]; | |
| 402 float[] points = new float[count * 2]; | |
| 403 Gdip.GraphicsPath_GetPathTypes(handle, gdipTypes, count); | |
|
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0405e18fec7f
Gdiplus implemented - test build of dwt.lib successful; updated graphics package as necessary
John Reimer <terminal.node@gmail.com
parents:
48
diff
changeset
|
404 Gdip.GraphicsPath_GetPathPoints(handle, cast(Gdip.PointF[])points, count); |
| 25 | 405 byte[] types = new byte[count * 2]; |
| 406 int index = 0, typesIndex = 0; | |
| 407 while (index < count) { | |
| 408 byte type = gdipTypes[index]; | |
| 409 bool close = false; | |
| 410 switch (type & Gdip.PathPointTypePathTypeMask) { | |
| 411 case Gdip.PathPointTypeStart: | |
| 412 types[typesIndex++] = DWT.PATH_MOVE_TO; | |
| 413 close = (type & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 414 index += 1; | |
| 415 break; | |
| 416 case Gdip.PathPointTypeLine: | |
| 417 types[typesIndex++] = DWT.PATH_LINE_TO; | |
| 418 close = (type & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 419 index += 1; | |
| 420 break; | |
| 421 case Gdip.PathPointTypeBezier: | |
| 422 types[typesIndex++] = DWT.PATH_CUBIC_TO; | |
| 423 close = (gdipTypes[index + 2] & Gdip.PathPointTypeCloseSubpath) !is 0; | |
| 424 index += 3; | |
| 425 break; | |
| 426 default: | |
| 427 index++; | |
| 428 } | |
| 429 if (close) { | |
| 430 types[typesIndex++] = DWT.PATH_CLOSE; | |
| 431 } | |
| 432 } | |
| 433 if (typesIndex !is types.length) { | |
| 434 byte[] newTypes = new byte[typesIndex]; | |
| 435 System.arraycopy(types, 0, newTypes, 0, typesIndex); | |
| 436 types = newTypes; | |
| 437 } | |
| 438 PathData result = new PathData(); | |
| 439 result.types = types; | |
| 440 result.points = points; | |
| 441 return result; | |
| 442 } | |
| 443 | |
| 444 /** | |
| 445 * Adds to the receiver a line from the current point to | |
| 446 * the point specified by (x, y). | |
| 447 * | |
| 448 * @param x the x coordinate of the end of the line to add | |
| 449 * @param y the y coordinate of the end of the line to add | |
| 450 * | |
| 451 * @exception DWTException <ul> | |
| 452 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 453 * </ul> | |
| 454 */ | |
| 455 public void lineTo(float x, float y) { | |
| 456 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 457 Gdip.GraphicsPath_AddLine(handle, currentPoint.X, currentPoint.Y, x, y); | |
| 458 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 459 } | |
| 460 | |
| 461 /** | |
| 462 * Returns <code>true</code> if the Path has been disposed, | |
| 463 * and <code>false</code> otherwise. | |
| 464 * <p> | |
| 465 * This method gets the dispose state for the Path. | |
| 466 * When a Path has been disposed, it is an error to | |
| 467 * invoke any other method using the Path. | |
| 468 * | |
| 469 * @return <code>true</code> when the Path is disposed, and <code>false</code> otherwise | |
| 470 */ | |
|
48
9a64a7781bab
Added override and alias, first chunk. Thanks torhu for doing this patch.
Frank Benoit <benoit@tionex.de>
parents:
26
diff
changeset
|
471 override public bool isDisposed() { |
| 26 | 472 return handle is null; |
| 25 | 473 } |
| 474 | |
| 475 /** | |
| 476 * Sets the current point of the receiver to the point | |
| 477 * specified by (x, y). Note that this starts a new | |
| 478 * sub path. | |
| 479 * | |
| 480 * @param x the x coordinate of the new end point | |
| 481 * @param y the y coordinate of the new end point | |
| 482 * | |
| 483 * @exception DWTException <ul> | |
| 484 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 485 * </ul> | |
| 486 */ | |
| 487 public void moveTo(float x, float y) { | |
| 488 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 489 Gdip.GraphicsPath_StartFigure(handle); | |
| 490 currentPoint.X = startPoint.X = x; | |
| 491 currentPoint.Y = startPoint.Y = y; | |
| 492 } | |
| 493 | |
| 494 /** | |
| 495 * Adds to the receiver a quadratic curve based on the parameters. | |
| 496 * | |
| 497 * @param cx the x coordinate of the control point of the spline | |
| 498 * @param cy the y coordinate of the control point of the spline | |
| 499 * @param x the x coordinate of the end point of the spline | |
| 500 * @param y the y coordinate of the end point of the spline | |
| 501 * | |
| 502 * @exception DWTException <ul> | |
| 503 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> | |
| 504 * </ul> | |
| 505 */ | |
| 506 public void quadTo(float cx, float cy, float x, float y) { | |
| 507 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); | |
| 508 float cx1 = currentPoint.X + 2 * (cx - currentPoint.X) / 3; | |
| 509 float cy1 = currentPoint.Y + 2 * (cy - currentPoint.Y) / 3; | |
| 510 float cx2 = cx1 + (x - currentPoint.X) / 3; | |
| 511 float cy2 = cy1 + (y - currentPoint.Y) / 3; | |
| 512 Gdip.GraphicsPath_AddBezier(handle, currentPoint.X, currentPoint.Y, cx1, cy1, cx2, cy2, x, y); | |
| 513 Gdip.GraphicsPath_GetLastPoint(handle, currentPoint); | |
| 514 } | |
| 515 | |
| 516 /** | |
| 517 * Returns a string containing a concise, human-readable | |
| 518 * description of the receiver. | |
| 519 * | |
| 520 * @return a string representation of the receiver | |
| 521 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
53
diff
changeset
|
522 override public String toString() { |
| 25 | 523 if (isDisposed()) return "Path {*DISPOSED*}"; |
| 26 | 524 return Format( "Path {{{}}", handle ); |
| 25 | 525 } |
| 526 | |
| 527 } |