Mercurial > projects > dynamin
annotate dynamin/painting/graphics.d @ 106:acdbb30fee7e
Port to D2.
Most of the effort was dealing with immutable and const.
| author | Jordan Miner <jminer7@gmail.com> |
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| date | Mon, 17 Dec 2012 23:41:50 -0600 |
| parents | 5c8c1c2e12c0 |
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| rev | line source |
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| 0 | 1 |
| 2 /* | |
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3 * Copyright Jordan Miner |
| 0 | 4 * |
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5 * This Source Code Form is subject to the terms of the Mozilla Public |
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6 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| 0 | 8 * |
| 9 */ | |
| 10 | |
| 11 module dynamin.painting.graphics; | |
| 12 | |
| 13 import dynamin.c.cairo; | |
| 14 import dynamin.core.string; | |
| 15 import dynamin.core.math; | |
| 16 import dynamin.core.file; | |
| 17 import dynamin.painting.coordinates; | |
| 18 import dynamin.painting.color; | |
| 19 import tango.io.Stdout; | |
| 20 | |
| 21 /// | |
| 22 class Font { | |
| 23 private: | |
| 24 string _family; | |
| 25 int _style = 0; | |
| 26 int _size; | |
| 27 public: | |
| 106 | 28 this(string family_ = null, int size = 10, bool b = false, bool i = false, bool u = false) { |
| 0 | 29 this.family = family_; |
| 30 this.size = size; | |
| 31 bold = b; | |
| 32 italic = i; | |
| 33 underline = u; | |
| 34 } | |
| 35 /** | |
| 36 * Gets or sets the family name of this font. Common font family names on | |
| 37 * Windows are "Arial", "Times New Roman", and "Tahoma". | |
| 38 */ | |
| 39 string family() { return _family; } | |
| 40 /// ditto | |
| 41 void family(string str) { _family = str; } | |
| 42 /// | |
| 43 int style() { return _style; } | |
| 44 /// ditto | |
| 45 void style(int s) { _style = s; } | |
| 46 /// Gets or sets whether this font is bold. | |
| 47 bool bold() { return cast(bool)(_style & 1); } | |
| 48 /// ditto | |
| 49 void bold(bool b) { b ? (_style |= 1) : (_style &= ~1); } | |
| 50 /// Gets or sets whether this font is italic. | |
| 51 bool italic() { return cast(bool)(_style & 2); } | |
| 52 /// ditto | |
| 53 void italic(bool b) { b ? (_style |= 2) : (_style &= ~2); } | |
| 54 /// Gets or sets whether this font is underline. | |
| 55 bool underline() { return cast(bool)(_style & 4); } | |
| 56 /// ditto | |
| 57 void underline(bool b) { b ? (_style |= 4) : (_style &= ~4); } | |
| 58 /// Gets or sets whether this font is strikethrough. | |
| 59 bool strikethrough() { return cast(bool)(_style & 8); } | |
| 60 /// ditto | |
| 61 void strikethrough(bool b) { b ? (_style |= 8) : (_style &= ~8); } | |
| 62 /** | |
| 63 * Gets or sets the size of this font in user space units, not in points. | |
| 64 * This size is the ascent plus the descent, not including the leading. | |
| 65 */ | |
| 66 int size() { return _size; } | |
| 67 /// ditto | |
| 68 void size(int s) { _size = s; } | |
| 69 } | |
| 70 | |
| 71 /// | |
| 72 struct FontExtents { | |
| 73 /// | |
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74 double ascent; |
| 0 | 75 /// |
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76 double descent; |
| 0 | 77 /// |
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78 double leading() { return height - ascent - descent; } |
| 0 | 79 /// |
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80 double height; |
| 0 | 81 /// |
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82 double maxAdvance; |
| 0 | 83 } |
| 84 | |
| 85 //import lodepng = dynamin.lodepng.decode; | |
| 86 /// An RGBA 32-bit-per-pixel image. | |
| 87 class Image { | |
| 88 Color* _data; | |
| 89 uint _width, _height; | |
| 90 Color* data() { return _data; } | |
| 91 uint width() { return _width; } | |
| 92 uint height() { return _height; } | |
| 93 protected this() { | |
| 94 } | |
| 95 Color* opIndex(int x, int y) { | |
| 96 return _data + x+y*_width; | |
| 97 } | |
| 106 | 98 static Image load(cstring file) { |
| 0 | 99 static if(false) { |
| 100 auto img = new Image; | |
| 101 lodepng.PngInfo info; | |
| 102 img._data = cast(Color*)lodepng.decode32(readFileBytes(file), info); | |
| 103 img._width = info.image.width; | |
| 104 img._height = info.image.height; | |
| 105 | |
| 106 ubyte r; | |
| 107 for(uint i = 0; i < img.width * img.height; ++i) { | |
| 108 // lodepng returns data as ABGR instead of the ARGB that cairo, | |
| 109 // Windows, and I think X use. | |
| 110 r = img.data[i].R; | |
| 111 img.data[i].R = img.data[i].B; | |
| 112 img.data[i].B = r; | |
| 113 // cairo, Windows, and I think X use pre-multiplied alpha | |
| 114 img.data[i].R = img.data[i].R * img.data[i].A / 255; | |
| 115 img.data[i].G = img.data[i].G * img.data[i].A / 255; | |
| 116 img.data[i].B = img.data[i].B * img.data[i].A / 255; | |
| 117 } | |
| 118 | |
| 119 return img; | |
| 120 } else { return null; } | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 /// | |
| 125 enum GraphicsOperator { | |
| 126 Clear, /// | |
| 127 | |
| 128 Source, /// | |
| 129 Over, /// | |
| 130 In, /// | |
| 131 Out, /// | |
| 132 Atop, /// | |
| 133 | |
| 134 Dest, /// | |
| 135 DestOver, /// | |
| 136 DestIn, /// | |
| 137 DestOut, /// | |
| 138 DestAtop, /// | |
| 139 | |
| 140 Xor, /// | |
| 141 Add, /// | |
| 142 Saturate /// | |
| 143 } | |
| 144 | |
| 145 /// | |
| 146 enum GraphicsFillRule { | |
| 147 /// | |
| 148 Winding, | |
| 149 EvenOdd /// | |
| 150 } | |
| 151 /** | |
| 152 * Example: | |
| 153 * ----- | |
| 154 * graphics.source = Color.Gold; | |
| 155 * graphics.rectangle(40, 10, 100, 120); | |
| 156 * graphics.fill(); | |
| 157 * graphics.source = Color.Black; | |
| 158 * | |
| 159 * graphics.lineWidth = 20; | |
| 160 * | |
| 161 * // GraphicsLineCap.Butt is default | |
| 162 * graphics.moveTo(40, 30); | |
| 163 * graphics.lineTo(140, 30); | |
| 164 * graphics.stroke(); | |
| 165 * | |
| 166 * graphics.lineCap = GraphicsLineCap.Round; | |
| 167 * graphics.moveTo(40, 70); | |
| 168 * graphics.lineTo(140, 70); | |
| 169 * graphics.stroke(); | |
| 170 * | |
| 171 * graphics.lineCap = GraphicsLineCap.Square; | |
| 172 * graphics.moveTo(40, 110); | |
| 173 * graphics.lineTo(140, 110); | |
| 174 * graphics.stroke(); | |
| 175 * ----- | |
| 176 * $(IMAGE ../web/example_line_cap.png) | |
| 177 */ | |
| 178 enum GraphicsLineCap { | |
| 179 /** | |
| 180 * Uses no ending. The line ends exactly at the end point. | |
| 181 */ | |
| 182 Butt, | |
| 183 /** | |
| 184 * Uses a rounded ending with the center of the circle at the end point. | |
| 185 * Therefore, the cap extends past the end point for half the line width. | |
| 186 */ | |
| 187 Round, | |
| 188 /** | |
| 189 * Uses a square ending with the center of the square at the end point. | |
| 190 * Therefore, the cap extends past the end point for half the line width. | |
| 191 */ | |
| 192 Square | |
| 193 } | |
| 194 | |
| 106 | 195 // cairo_copy_clip_rectangles --> Rectangle[] clipRectangles() |
| 196 // cairo_get_dash --> dashes() | |
| 197 // cairo_get_color_stop_rgba --> colorStops() | |
| 0 | 198 /** |
| 199 * A Graphics object uses its source to draw on its target. Its target is set | |
| 200 * when it is created, but its source can be changed whenever desired. For | |
| 201 * example, for a painting event, the target of a Graphics is the control | |
| 202 * being painted. In other cases it could be an image. Its source is usually a | |
| 203 * color, but could be a gradient, an image, or some other pattern. | |
| 204 * | |
| 205 * If the documentation here is not sufficient, cairo might have | |
| 206 * better documentation at $(LINK http://www.cairographics.org/manual/). | |
| 207 */ | |
| 208 class Graphics { | |
| 209 private: | |
| 210 cairo_t* cr; | |
| 211 public: | |
| 212 this(cairo_t* cr) { | |
| 213 this.cr = cr; | |
| 214 cairo_reference(cr); | |
| 215 checkStatus(); | |
| 216 } | |
| 217 ~this() { | |
| 218 cairo_destroy(cr); | |
| 219 } | |
| 220 /** | |
| 221 * Returns: a pointer to the cairo context (cairo_t*) that backs this object | |
| 222 */ | |
| 223 cairo_t* handle() { return cr; } | |
| 224 void checkStatus() { | |
| 225 cairo_status_t status = cairo_status(cr); | |
| 226 if(status == CAIRO_STATUS_SUCCESS) | |
| 227 return; | |
| 228 | |
| 229 Stdout("Cairo error: ")(cairo_status_to_string(status)).newline; | |
| 230 assert(0); | |
| 231 } | |
| 232 /// | |
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233 void moveTo(double x, double y) { |
| 0 | 234 cairo_move_to(cr, x, y); |
| 235 } | |
| 236 /// ditto | |
| 237 void moveTo(Point pt) { | |
| 238 moveTo(pt.x, pt.y); | |
| 239 } | |
| 240 /// | |
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241 void lineTo(double x, double y) { |
| 0 | 242 cairo_line_to(cr, x, y); |
| 243 } | |
| 244 /// ditto | |
| 245 void lineTo(Point pt) { | |
| 246 lineTo(pt.x, pt.y); | |
| 247 } | |
| 248 /// | |
| 249 void curveTo(Point pt1, Point pt2, Point pt3) { | |
| 250 curveTo(pt1.x, pt1.y, pt2.x, pt2.y, pt3.x, pt3.y); | |
| 251 } | |
| 252 /// ditto | |
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253 void curveTo(double x1, double y1, double x2, double y2, double x3, double y3) { |
| 0 | 254 cairo_curve_to(cr, x1, y1, x2, y2, x3, y3); |
| 255 } | |
| 256 /// | |
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257 void relMoveTo(double x, double y) { |
| 0 | 258 cairo_rel_move_to(cr, x, y); |
| 259 } | |
| 260 /// ditto | |
| 261 void relMoveTo(Point pt) { | |
| 262 relMoveTo(pt.x, pt.y); | |
| 263 } | |
| 264 /// | |
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265 void relLineTo(double x, double y) { |
| 0 | 266 cairo_rel_line_to(cr, x, y); |
| 267 } | |
| 268 /// ditto | |
| 269 void relLineTo(Point pt) { | |
| 270 relLineTo(pt.x, pt.y); | |
| 271 } | |
| 272 /// | |
| 273 void relCurveTo(Point pt1, Point pt2, Point pt3) { | |
| 274 relCurveTo(pt1.x, pt1.y, pt2.x, pt2.y, pt3.x, pt3.y); | |
| 275 } | |
| 276 /// ditto | |
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277 void relCurveTo(double x1, double y1, double x2, double y2, double x3, double y3) { |
| 0 | 278 cairo_rel_curve_to(cr, x1, y1, x2, y2, x3, y3); |
| 279 } | |
| 280 /** | |
| 281 * Adds an arc to the current path. A line is added connecting the | |
| 282 * current point to the beginning of the arc. | |
| 283 * Example: | |
| 284 * ----- | |
| 285 * graphics.moveTo(5, 5); | |
| 286 * graphics.arc(50.5, 80.5, 40, 40, -0.2, PI/2); | |
| 287 * graphics.stroke(); | |
| 288 * ----- | |
| 289 * $(IMAGE ../web/example_arc.png) | |
| 290 */ | |
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291 void arc(Point ptc, double radius, double angle1, double angle2) { |
| 0 | 292 arc(ptc.x, ptc.y, radius, angle1, angle2); |
| 293 } | |
| 294 /// ditto | |
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295 void arc(double xc, double yc, double radius, double angle1, double angle2) { |
| 0 | 296 cairo_arc(cr, xc, yc, radius, angle1, angle2); |
| 297 } | |
| 298 /// ditto | |
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299 void arc(double xc, double yc, double xradius, double yradius, double angle1, double angle2) { |
| 0 | 300 cairo_save(cr); |
| 301 cairo_translate(cr, xc, yc); | |
| 302 cairo_scale(cr, xradius, yradius); | |
| 303 cairo_arc(cr, 0, 0, 1, angle1, angle2); | |
| 304 cairo_restore(cr); | |
| 305 } | |
| 306 /** | |
| 307 * Adds an ellipse as a closed sub-path--a line will not connect it | |
| 308 * to the current point. | |
| 309 * Example: | |
| 310 * ----- | |
| 311 * graphics.ellipse(70.5, 50.5, 60, 25); | |
| 312 * graphics.stroke(); | |
| 313 * ----- | |
| 314 * $(IMAGE ../web/example_ellipse.png) | |
| 315 */ | |
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316 void ellipse(double xc, double yc, double radius) { |
| 0 | 317 cairo_new_sub_path(cr); |
| 318 cairo_arc(cr, xc, yc, radius, 0, Pi * 2); | |
| 319 cairo_close_path(cr); | |
| 320 } | |
| 321 /// ditto | |
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322 void ellipse(double xc, double yc, double xradius, double yradius) { |
| 0 | 323 cairo_new_sub_path(cr); |
| 324 arc(xc, yc, xradius, yradius, 0, Pi * 2); | |
| 325 cairo_close_path(cr); | |
| 326 } | |
| 327 /** | |
| 328 * Adds a rectangle as a sub-path--a line will not connect it | |
| 329 * to the current point. | |
| 330 * Example: | |
| 331 * ----- | |
| 332 * graphics.rectangle(5.5, 5.5, 70, 20); | |
| 333 * graphics.stroke(); | |
| 334 * ----- | |
| 335 * $(IMAGE ../web/example_rectangle.png) | |
| 336 */ | |
| 337 void rectangle(Rect rect) { | |
| 338 rectangle(rect.x, rect.y, rect.width, rect.height); | |
| 339 } | |
| 340 /// ditto | |
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341 void rectangle(double x, double y, double width, double height) { |
| 0 | 342 cairo_rectangle(cr, x, y, width, height); |
| 343 } | |
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344 /** |
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345 * Adds a rectangle with rounded corners as a sub-path--a line will |
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346 * not connect it to the current point. |
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347 */ |
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348 void roundedRectangle(Rect rect, double radius) { |
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349 roundedRectangle(rect.x, rect.y, rect.width, rect.height, radius); |
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350 } |
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351 /// ditto |
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352 void roundedRectangle(double x, double y, double width, double height, double radius) { |
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353 alias radius r; |
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354 cairo_new_sub_path(cr); |
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355 arc(x+r, y+r, r, Pi, 3*Pi/2); |
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356 arc(x+width-r, y+r, r, 3*Pi/2, 0); |
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357 arc(x+width-r, y+height-r, r, 0, Pi/2); |
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358 arc(x+r, y+height-r, r, Pi/2, Pi); |
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359 closePath(); |
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360 } |
| 0 | 361 /// |
| 362 void closePath() { | |
| 363 cairo_close_path(cr); | |
| 364 } | |
| 365 /** | |
| 366 * Draws the outline of the current path. | |
| 367 * Example: | |
| 368 * ----- | |
| 369 * graphics.moveTo(12.5, 14.5); | |
| 370 * graphics.lineTo(123.5, 22.5); | |
| 371 * graphics.lineTo(139.5, 108.5); | |
| 372 * graphics.lineTo(49.5, 86.5); | |
| 373 * graphics.closePath(); | |
| 374 * graphics.stroke(); | |
| 375 * ----- | |
| 376 * $(IMAGE ../web/example_stroke.png) | |
| 377 */ | |
| 378 void stroke() { | |
| 379 cairo_stroke(cr); | |
| 380 } | |
| 381 /** | |
| 382 * Draws the inside of the current path. | |
| 383 * Example: | |
| 384 * ----- | |
| 106 | 385 * graphics.moveTo(12.5, 14.5); |
| 386 * graphics.lineTo(123.5, 22.5); | |
| 387 * graphics.lineTo(139.5, 108.5); | |
| 388 * graphics.lineTo(49.5, 86.5); | |
| 389 * graphics.closePath(); | |
| 390 * graphics.fill(); | |
| 0 | 391 * ----- |
| 392 * $(IMAGE ../web/example_fill.png) | |
| 393 */ | |
| 394 void fill() { | |
| 395 cairo_fill(cr); | |
| 396 } | |
| 397 /** | |
| 398 * Paints the current source everywhere within the current clip region. | |
| 399 * Examples: | |
| 400 * ----- | |
| 401 * graphics.source = Color(255, 128, 0); | |
| 402 * graphics.paint(); | |
| 403 * ----- | |
| 404 * $(IMAGE ../web/example_paint.png) | |
| 405 */ | |
| 406 void paint() { | |
| 407 cairo_paint(cr); | |
| 408 } | |
| 409 /** | |
| 410 * Gets or sets the line _width used for stroking. | |
| 411 * Example: | |
| 412 * ----- | |
| 413 * graphics.ellipse(40.5, 30.5, 30, 20); | |
| 414 * graphics.lineWidth = 1; | |
| 415 * graphics.stroke(); | |
| 416 * graphics.ellipse(40.5, 80.5, 30, 20); | |
| 417 * graphics.lineWidth = 5; | |
| 418 * graphics.stroke(); | |
| 419 * ----- | |
| 420 * $(IMAGE ../web/example_line_width.png) | |
| 421 */ | |
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422 double lineWidth() { |
| 0 | 423 return cairo_get_line_width(cr); |
| 424 } | |
| 425 /// ditto | |
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426 void lineWidth(double width) { |
| 0 | 427 cairo_set_line_width(cr, width); |
| 428 } | |
| 429 /** | |
| 430 * Gets or sets the line cap used for stroking. | |
| 431 * | |
| 432 * The line cap is only examined when the stroke is performed, not before. | |
| 433 * Therefore, drawing two lines, each with a different line cap, would | |
| 434 * require calling stroke twice. | |
| 435 */ | |
| 436 GraphicsLineCap lineCap() { | |
| 437 return cast(GraphicsLineCap)cairo_get_line_cap(cr); | |
| 438 } | |
| 439 /// ditto | |
| 440 void lineCap(GraphicsLineCap cap) { | |
| 441 cairo_set_line_cap(cr, cap); | |
| 442 } | |
| 443 /** | |
| 444 * Sets the font size to the specified size in user space units, not | |
| 445 * in points. | |
| 446 */ | |
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447 void fontSize(double size) { |
| 0 | 448 assert(size != 0); |
| 449 cairo_set_font_size(cr, size); | |
| 450 } | |
| 451 /** | |
| 452 * Set the font used to draw text. | |
| 453 */ | |
| 454 void font(Font f) { | |
| 455 assert(f.size != 0); | |
| 456 cairo_set_font_size(cr, f.size); | |
| 457 cairo_select_font_face(cr, toCharPtr(f.family), f.italic, f.bold); | |
| 458 } | |
| 459 // TODO: if text is all ascii, do fast path with no uniscribe | |
| 106 | 460 void drawText(cstring text, double x, double y) { |
| 0 | 461 auto extents = getFontExtents; |
| 462 cairo_font_extents_t fextents; | |
| 463 cairo_font_extents(cr, &fextents); | |
| 464 cairo_move_to(cr, x, y + fextents.ascent); | |
| 465 cairo_show_text(cr, toCharPtr(text)); // 99% of time spent in show_text | |
| 466 checkStatus(); | |
| 467 } | |
| 468 /// | |
| 106 | 469 Size getTextExtents(cstring text) { |
| 0 | 470 cairo_text_extents_t textents; |
| 471 cairo_text_extents(cr, toCharPtr(text), &textents); | |
| 472 cairo_font_extents_t fextents; | |
| 473 cairo_font_extents(cr, &fextents); | |
| 474 return Size(textents.x_advance, fextents.height); | |
| 475 } | |
| 476 /// | |
| 477 FontExtents getFontExtents() { // TODO: make property? | |
| 478 cairo_font_extents_t fextents; | |
| 479 cairo_font_extents(cr, &fextents); | |
| 480 FontExtents extents; | |
| 481 extents.ascent = fextents.ascent; | |
| 482 extents.descent = fextents.descent; | |
| 483 extents.height = fextents.height; | |
| 484 extents.maxAdvance = fextents.max_x_advance; | |
| 485 return extents; | |
| 486 } | |
| 487 /// | |
| 488 Rect getClipExtents() { // TODO: make property? | |
| 489 double x, y, width, height; | |
| 490 cairo_clip_extents(cr, &x, &y, &width, &height); | |
| 491 return Rect(x, y, width, height); | |
| 492 } | |
| 493 /// | |
| 494 void save() { | |
| 495 cairo_save(cr); | |
| 496 } | |
| 497 /// | |
| 498 void restore() { | |
| 499 cairo_restore(cr); | |
| 500 checkStatus(); | |
| 501 } | |
| 502 /// | |
| 503 void clip() { | |
| 504 cairo_clip(cr); | |
| 505 } | |
| 506 /// | |
| 507 void translate(Point pt) { | |
| 508 translate(pt.x, pt.y); | |
| 509 } | |
| 510 /// ditto | |
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511 void translate(double x, double y) { |
| 0 | 512 cairo_translate(cr, x, y); |
| 513 } | |
| 514 /// | |
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515 void scale(double x, double y) { |
| 0 | 516 cairo_scale(cr, x, y); |
| 517 } | |
| 518 /// | |
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519 void rotate(double angle) { |
| 0 | 520 cairo_rotate(cr, angle); |
| 521 } | |
| 522 /// | |
| 523 GraphicsOperator operator() { | |
| 524 return cast(GraphicsOperator)cairo_get_operator(cr); | |
| 525 } | |
| 526 /// | |
| 527 void operator(GraphicsOperator op) { | |
| 528 cairo_set_operator(cr, cast(cairo_operator_t)op); | |
| 529 } | |
| 530 /** | |
| 531 * Sets the dash pattern to be used when lines are drawn. | |
| 532 */ | |
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533 void setDash(double[] dashes, double offset) { |
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534 cairo_set_dash(cr, dashes.ptr, dashes.length, offset); |
| 0 | 535 } |
| 536 /** | |
| 537 * Gets or sets the fill rule the current fill rule. | |
| 538 * The default is GraphicsFillRule.Winding. | |
| 539 */ | |
| 540 GraphicsFillRule fillRule() { | |
| 541 return cast(GraphicsFillRule)cairo_get_fill_rule(cr); | |
| 542 } | |
| 543 /// ditto | |
| 544 void fillRule(GraphicsFillRule rule) { | |
| 545 cairo_set_fill_rule(cr, cast(cairo_fill_rule_t)rule); | |
| 546 } | |
| 547 /** | |
| 106 | 548 * The temporary surface created will be the same size as the current clip. To speed up using this function, call clip() to the area you will be drawing in. |
| 0 | 549 */ |
| 550 void pushGroup() { | |
| 551 cairo_push_group(cr); | |
| 552 } | |
| 553 //popGroup() { // TODO: returning a pattern | |
| 554 // cairo_pop_group(cr); | |
| 555 //} | |
| 556 /** | |
| 106 | 557 * Terminates the redirection begun by a call to pushGroup() or |
| 558 * pushGroupWithContent() and installs the resulting pattern as the | |
| 0 | 559 * source pattern. |
| 560 */ | |
| 561 void popGroupToSource() { | |
| 562 cairo_pop_group_to_source(cr); | |
| 563 checkStatus(); | |
| 564 } | |
| 565 // TODO: figure out the best way to set the source and get the source | |
| 566 void source(Color c) { | |
| 567 cairo_set_source_rgba(cr, c.R/255.0, c.G/255.0, c.B/255.0, c.A/255.0); | |
| 568 } | |
| 569 //void source(Pattern s) {} | |
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570 //void setSource(Surface s, double x = 0, double y = 0) {} |
| 0 | 571 // TODO: remove this function and have users do: |
| 572 // g.setSource(img, x, y); | |
| 573 // g.paint(); | |
| 574 // ??? | |
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575 // paintSource(Image, double, double) ? |
| 0 | 576 /// Draws the specified image unscaled. |
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577 void drawImage(Image image, double x, double y) { |
| 0 | 578 auto surface= cairo_image_surface_create_for_data(cast(char*)image.data, |
| 579 CAIRO_FORMAT_ARGB32, image.width, image.height, image.width*4); | |
| 580 save(); | |
| 581 cairo_set_source_surface(cr, surface, x, y); | |
| 582 cairo_paint(cr); | |
| 583 restore(); | |
| 584 cairo_surface_destroy(surface); | |
| 585 } | |
| 586 // Draws the specified image scaled to the specified width and height. | |
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parents:
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changeset
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587 //void drawImage(Image image, double x, double y, double width, double height); |
| 0 | 588 } |