1 /* 2 * Copyright 2009, The Android Open Source Project 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 /* Defines the android-specific types and functions as part of npapi 27 28 In particular, defines the window and event types that are passed to 29 NPN_GetValue, NPP_SetWindow and NPP_HandleEvent. 30 31 To minimize what native libraries the plugin links against, some 32 functionality is provided via function-ptrs (e.g. time, sound) 33 */ 34 35 #ifndef android_npapi_h 36 #define android_npapi_h 37 38 #include <stdint.h> 39 40 #include "npapi.h" 41 42 /////////////////////////////////////////////////////////////////////////////// 43 // General types 44 45 enum ANPBitmapFormats { 46 kUnknown_ANPBitmapFormat = 0, 47 kRGBA_8888_ANPBitmapFormat = 1, 48 kRGB_565_ANPBitmapFormat = 2 49 }; 50 typedef int32_t ANPBitmapFormat; 51 52 struct ANPPixelPacking { 53 uint8_t AShift; 54 uint8_t ABits; 55 uint8_t RShift; 56 uint8_t RBits; 57 uint8_t GShift; 58 uint8_t GBits; 59 uint8_t BShift; 60 uint8_t BBits; 61 }; 62 63 struct ANPBitmap { 64 void* baseAddr; 65 ANPBitmapFormat format; 66 int32_t width; 67 int32_t height; 68 int32_t rowBytes; 69 }; 70 71 struct ANPRectF { 72 float left; 73 float top; 74 float right; 75 float bottom; 76 }; 77 78 struct ANPRectI { 79 int32_t left; 80 int32_t top; 81 int32_t right; 82 int32_t bottom; 83 }; 84 85 struct ANPCanvas; 86 struct ANPMatrix; 87 struct ANPPaint; 88 struct ANPPath; 89 struct ANPRegion; 90 struct ANPTypeface; 91 92 enum ANPMatrixFlags { 93 kIdentity_ANPMatrixFlag = 0, 94 kTranslate_ANPMatrixFlag = 0x01, 95 kScale_ANPMatrixFlag = 0x02, 96 kAffine_ANPMatrixFlag = 0x04, 97 kPerspective_ANPMatrixFlag = 0x08, 98 }; 99 typedef uint32_t ANPMatrixFlag; 100 101 /////////////////////////////////////////////////////////////////////////////// 102 // NPN_GetValue 103 104 /** queries for a specific ANPInterface. 105 106 Maybe called with NULL for the NPP instance 107 108 NPN_GetValue(inst, interface_enum, ANPInterface*) 109 */ 110 #define kLogInterfaceV0_ANPGetValue ((NPNVariable)1000) 111 #define kAudioTrackInterfaceV0_ANPGetValue ((NPNVariable)1001) 112 #define kCanvasInterfaceV0_ANPGetValue ((NPNVariable)1002) 113 #define kMatrixInterfaceV0_ANPGetValue ((NPNVariable)1003) 114 #define kPaintInterfaceV0_ANPGetValue ((NPNVariable)1004) 115 #define kPathInterfaceV0_ANPGetValue ((NPNVariable)1005) 116 #define kTypefaceInterfaceV0_ANPGetValue ((NPNVariable)1006) 117 #define kWindowInterfaceV0_ANPGetValue ((NPNVariable)1007) 118 #define kBitmapInterfaceV0_ANPGetValue ((NPNVariable)1008) 119 #define kSurfaceInterfaceV0_ANPGetValue ((NPNVariable)1009) 120 #define kSystemInterfaceV0_ANPGetValue ((NPNVariable)1010) 121 #define kEventInterfaceV0_ANPGetValue ((NPNVariable)1011) 122 123 #define kAudioTrackInterfaceV1_ANPGetValue ((NPNVariable)1012) 124 #define kOpenGLInterfaceV0_ANPGetValue ((NPNVariable)1013) 125 #define kWindowInterfaceV1_ANPGetValue ((NPNVariable)1014) 126 #define kVideoInterfaceV0_ANPGetValue ((NPNVariable)1015) 127 #define kSystemInterfaceV1_ANPGetValue ((NPNVariable)1016) 128 129 #define kSystemInterfaceV2_ANPGetValue ((NPNVariable)1017) 130 #define kWindowInterfaceV2_ANPGetValue ((NPNVariable)1018) 131 132 #define kNativeWindowInterfaceV0_ANPGetValue ((NPNVariable)1019) 133 #define kVideoInterfaceV1_ANPGetValue ((NPNVariable)1020) 134 135 /** queries for the drawing models supported on this device. 136 137 NPN_GetValue(inst, kSupportedDrawingModel_ANPGetValue, uint32_t* bits) 138 */ 139 #define kSupportedDrawingModel_ANPGetValue ((NPNVariable)2000) 140 141 /** queries for the context (android.content.Context) of the plugin. If no 142 instance is specified the application's context is returned. If the instance 143 is given then the context returned is identical to the context used to 144 create the webview in which that instance resides. 145 146 NOTE: Holding onto a non-application context after your instance has been 147 destroyed will cause a memory leak. Refer to the android documentation to 148 determine what context is best suited for your particular scenario. 149 150 NPN_GetValue(inst, kJavaContext_ANPGetValue, jobject context) 151 */ 152 #define kJavaContext_ANPGetValue ((NPNVariable)2001) 153 154 /////////////////////////////////////////////////////////////////////////////// 155 // NPN_SetValue 156 157 /** Request to set the drawing model. SetValue will return false if the drawing 158 model is not supported or has insufficient information for configuration. 159 160 NPN_SetValue(inst, kRequestDrawingModel_ANPSetValue, (void*)foo_ANPDrawingModel) 161 */ 162 #define kRequestDrawingModel_ANPSetValue ((NPPVariable)1000) 163 164 /** These are used as bitfields in ANPSupportedDrawingModels_EnumValue, 165 and as-is in ANPRequestDrawingModel_EnumValue. The drawing model determines 166 how to interpret the ANPDrawingContext provided in the Draw event and how 167 to interpret the NPWindow->window field. 168 */ 169 enum ANPDrawingModels { 170 /** Draw into a bitmap from the browser thread in response to a Draw event. 171 NPWindow->window is reserved (ignore) 172 */ 173 kBitmap_ANPDrawingModel = 1 << 0, 174 /** Draw into a surface (e.g. raster, openGL, etc.) using the Java surface 175 interface. When this model is used the browser will invoke the Java 176 class specified in the plugin's apk manifest. From that class the browser 177 will invoke the appropriate method to return an an instance of a android 178 Java View. The instance is then embedded in the html. The plugin can then 179 manipulate the view as it would any normal Java View in android. 180 181 Unlike the bitmap model, a surface model is opaque so no html content 182 behind the plugin will be visible. Unless the plugin needs to be 183 transparent the surface model should be chosen over the bitmap model as 184 it will have better performance. 185 186 Further, a plugin can manipulate some surfaces in native code using the 187 ANPSurfaceInterface. This interface can be used to manipulate Java 188 objects that extend Surface.class by allowing them to access the 189 surface's underlying bitmap in native code. For instance, if a raster 190 surface is used the plugin can lock, draw directly into the bitmap, and 191 unlock the surface in native code without making JNI calls to the Java 192 surface object. 193 */ 194 kSurface_ANPDrawingModel = 1 << 1, 195 kOpenGL_ANPDrawingModel = 1 << 2, 196 }; 197 typedef int32_t ANPDrawingModel; 198 199 /** Request to receive/disable events. If the pointer is NULL then all flags will 200 be disabled. Otherwise, the event type will be enabled iff its corresponding 201 bit in the EventFlags bit field is set. 202 203 NPN_SetValue(inst, ANPAcceptEvents, (void*)EventFlags) 204 */ 205 #define kAcceptEvents_ANPSetValue ((NPPVariable)1001) 206 207 /** The EventFlags are a set of bits used to determine which types of events the 208 plugin wishes to receive. For example, if the value is 0x03 then both key 209 and touch events will be provided to the plugin. 210 */ 211 enum ANPEventFlag { 212 kKey_ANPEventFlag = 0x01, 213 kTouch_ANPEventFlag = 0x02, 214 }; 215 typedef uint32_t ANPEventFlags; 216 217 /////////////////////////////////////////////////////////////////////////////// 218 // NPP_GetValue 219 220 /** Requests that the plugin return a java surface to be displayed. This will 221 only be used if the plugin has choosen the kSurface_ANPDrawingModel. 222 223 NPP_GetValue(inst, kJavaSurface_ANPGetValue, jobject surface) 224 */ 225 #define kJavaSurface_ANPGetValue ((NPPVariable)2000) 226 227 228 /////////////////////////////////////////////////////////////////////////////// 229 // ANDROID INTERFACE DEFINITIONS 230 231 /** Interfaces provide additional functionality to the plugin via function ptrs. 232 Once an interface is retrieved, it is valid for the lifetime of the plugin 233 (just like browserfuncs). 234 235 All ANPInterfaces begin with an inSize field, which must be set by the 236 caller (plugin) with the number of bytes allocated for the interface. 237 e.g. SomeInterface si; si.inSize = sizeof(si); browser->getvalue(..., &si); 238 */ 239 struct ANPInterface { 240 uint32_t inSize; // size (in bytes) of this struct 241 }; 242 243 enum ANPLogTypes { 244 kError_ANPLogType = 0, // error 245 kWarning_ANPLogType = 1, // warning 246 kDebug_ANPLogType = 2 // debug only (informational) 247 }; 248 typedef int32_t ANPLogType; 249 250 struct ANPLogInterfaceV0 : ANPInterface { 251 /** dumps printf messages to the log file 252 e.g. interface->log(instance, kWarning_ANPLogType, "value is %d", value); 253 */ 254 void (*log)(ANPLogType, const char format[], ...); 255 }; 256 257 struct ANPBitmapInterfaceV0 : ANPInterface { 258 /** Returns true if the specified bitmap format is supported, and if packing 259 is non-null, sets it to the packing info for that format. 260 */ 261 bool (*getPixelPacking)(ANPBitmapFormat, ANPPixelPacking* packing); 262 }; 263 264 struct ANPMatrixInterfaceV0 : ANPInterface { 265 /** Return a new identity matrix 266 */ 267 ANPMatrix* (*newMatrix)(); 268 /** Delete a matrix previously allocated by newMatrix() 269 */ 270 void (*deleteMatrix)(ANPMatrix*); 271 272 ANPMatrixFlag (*getFlags)(const ANPMatrix*); 273 274 void (*copy)(ANPMatrix* dst, const ANPMatrix* src); 275 276 /** Return the matrix values in a float array (allcoated by the caller), 277 where the values are treated as follows: 278 w = x * [6] + y * [7] + [8]; 279 x' = (x * [0] + y * [1] + [2]) / w; 280 y' = (x * [3] + y * [4] + [5]) / w; 281 */ 282 void (*get3x3)(const ANPMatrix*, float[9]); 283 /** Initialize the matrix from values in a float array, 284 where the values are treated as follows: 285 w = x * [6] + y * [7] + [8]; 286 x' = (x * [0] + y * [1] + [2]) / w; 287 y' = (x * [3] + y * [4] + [5]) / w; 288 */ 289 void (*set3x3)(ANPMatrix*, const float[9]); 290 291 void (*setIdentity)(ANPMatrix*); 292 void (*preTranslate)(ANPMatrix*, float tx, float ty); 293 void (*postTranslate)(ANPMatrix*, float tx, float ty); 294 void (*preScale)(ANPMatrix*, float sx, float sy); 295 void (*postScale)(ANPMatrix*, float sx, float sy); 296 void (*preSkew)(ANPMatrix*, float kx, float ky); 297 void (*postSkew)(ANPMatrix*, float kx, float ky); 298 void (*preRotate)(ANPMatrix*, float degrees); 299 void (*postRotate)(ANPMatrix*, float degrees); 300 void (*preConcat)(ANPMatrix*, const ANPMatrix*); 301 void (*postConcat)(ANPMatrix*, const ANPMatrix*); 302 303 /** Return true if src is invertible, and if so, return its inverse in dst. 304 If src is not invertible, return false and ignore dst. 305 */ 306 bool (*invert)(ANPMatrix* dst, const ANPMatrix* src); 307 308 /** Transform the x,y pairs in src[] by this matrix, and store the results 309 in dst[]. The count parameter is treated as the number of pairs in the 310 array. It is legal for src and dst to point to the same memory, but 311 illegal for the two arrays to partially overlap. 312 */ 313 void (*mapPoints)(ANPMatrix*, float dst[], const float src[], 314 int32_t count); 315 }; 316 317 struct ANPPathInterfaceV0 : ANPInterface { 318 /** Return a new path */ 319 ANPPath* (*newPath)(); 320 321 /** Delete a path previously allocated by ANPPath() */ 322 void (*deletePath)(ANPPath*); 323 324 /** Make a deep copy of the src path, into the dst path (already allocated 325 by the caller). 326 */ 327 void (*copy)(ANPPath* dst, const ANPPath* src); 328 329 /** Returns true if the two paths are the same (i.e. have the same points) 330 */ 331 bool (*equal)(const ANPPath* path0, const ANPPath* path1); 332 333 /** Remove any previous points, initializing the path back to empty. */ 334 void (*reset)(ANPPath*); 335 336 /** Return true if the path is empty (has no lines, quads or cubics). */ 337 bool (*isEmpty)(const ANPPath*); 338 339 /** Return the path's bounds in bounds. */ 340 void (*getBounds)(const ANPPath*, ANPRectF* bounds); 341 342 void (*moveTo)(ANPPath*, float x, float y); 343 void (*lineTo)(ANPPath*, float x, float y); 344 void (*quadTo)(ANPPath*, float x0, float y0, float x1, float y1); 345 void (*cubicTo)(ANPPath*, float x0, float y0, float x1, float y1, 346 float x2, float y2); 347 void (*close)(ANPPath*); 348 349 /** Offset the src path by [dx, dy]. If dst is null, apply the 350 change directly to the src path. If dst is not null, write the 351 changed path into dst, and leave the src path unchanged. In that case 352 dst must have been previously allocated by the caller. 353 */ 354 void (*offset)(ANPPath* src, float dx, float dy, ANPPath* dst); 355 356 /** Transform the path by the matrix. If dst is null, apply the 357 change directly to the src path. If dst is not null, write the 358 changed path into dst, and leave the src path unchanged. In that case 359 dst must have been previously allocated by the caller. 360 */ 361 void (*transform)(ANPPath* src, const ANPMatrix*, ANPPath* dst); 362 }; 363 364 /** ANPColor is always defined to have the same packing on all platforms, and 365 it is always unpremultiplied. 366 367 This is in contrast to 32bit format(s) in bitmaps, which are premultiplied, 368 and their packing may vary depending on the platform, hence the need for 369 ANPBitmapInterface::getPixelPacking() 370 */ 371 typedef uint32_t ANPColor; 372 #define ANPColor_ASHIFT 24 373 #define ANPColor_RSHIFT 16 374 #define ANPColor_GSHIFT 8 375 #define ANPColor_BSHIFT 0 376 #define ANP_MAKE_COLOR(a, r, g, b) \ 377 (((a) << ANPColor_ASHIFT) | \ 378 ((r) << ANPColor_RSHIFT) | \ 379 ((g) << ANPColor_GSHIFT) | \ 380 ((b) << ANPColor_BSHIFT)) 381 382 enum ANPPaintFlag { 383 kAntiAlias_ANPPaintFlag = 1 << 0, 384 kFilterBitmap_ANPPaintFlag = 1 << 1, 385 kDither_ANPPaintFlag = 1 << 2, 386 kUnderlineText_ANPPaintFlag = 1 << 3, 387 kStrikeThruText_ANPPaintFlag = 1 << 4, 388 kFakeBoldText_ANPPaintFlag = 1 << 5, 389 }; 390 typedef uint32_t ANPPaintFlags; 391 392 enum ANPPaintStyles { 393 kFill_ANPPaintStyle = 0, 394 kStroke_ANPPaintStyle = 1, 395 kFillAndStroke_ANPPaintStyle = 2 396 }; 397 typedef int32_t ANPPaintStyle; 398 399 enum ANPPaintCaps { 400 kButt_ANPPaintCap = 0, 401 kRound_ANPPaintCap = 1, 402 kSquare_ANPPaintCap = 2 403 }; 404 typedef int32_t ANPPaintCap; 405 406 enum ANPPaintJoins { 407 kMiter_ANPPaintJoin = 0, 408 kRound_ANPPaintJoin = 1, 409 kBevel_ANPPaintJoin = 2 410 }; 411 typedef int32_t ANPPaintJoin; 412 413 enum ANPPaintAligns { 414 kLeft_ANPPaintAlign = 0, 415 kCenter_ANPPaintAlign = 1, 416 kRight_ANPPaintAlign = 2 417 }; 418 typedef int32_t ANPPaintAlign; 419 420 enum ANPTextEncodings { 421 kUTF8_ANPTextEncoding = 0, 422 kUTF16_ANPTextEncoding = 1, 423 }; 424 typedef int32_t ANPTextEncoding; 425 426 enum ANPTypefaceStyles { 427 kBold_ANPTypefaceStyle = 1 << 0, 428 kItalic_ANPTypefaceStyle = 1 << 1 429 }; 430 typedef uint32_t ANPTypefaceStyle; 431 432 typedef uint32_t ANPFontTableTag; 433 434 struct ANPFontMetrics { 435 /** The greatest distance above the baseline for any glyph (will be <= 0) */ 436 float fTop; 437 /** The recommended distance above the baseline (will be <= 0) */ 438 float fAscent; 439 /** The recommended distance below the baseline (will be >= 0) */ 440 float fDescent; 441 /** The greatest distance below the baseline for any glyph (will be >= 0) */ 442 float fBottom; 443 /** The recommended distance to add between lines of text (will be >= 0) */ 444 float fLeading; 445 }; 446 447 struct ANPTypefaceInterfaceV0 : ANPInterface { 448 /** Return a new reference to the typeface that most closely matches the 449 requested name and style. Pass null as the name to return 450 the default font for the requested style. Will never return null 451 452 The 5 generic font names "serif", "sans-serif", "monospace", "cursive", 453 "fantasy" are recognized, and will be mapped to their logical font 454 automatically by this call. 455 456 @param name May be NULL. The name of the font family. 457 @param style The style (normal, bold, italic) of the typeface. 458 @return reference to the closest-matching typeface. Caller must call 459 unref() when they are done with the typeface. 460 */ 461 ANPTypeface* (*createFromName)(const char name[], ANPTypefaceStyle); 462 463 /** Return a new reference to the typeface that most closely matches the 464 requested typeface and specified Style. Use this call if you want to 465 pick a new style from the same family of the existing typeface. 466 If family is NULL, this selects from the default font's family. 467 468 @param family May be NULL. The name of the existing type face. 469 @param s The style (normal, bold, italic) of the type face. 470 @return reference to the closest-matching typeface. Call must call 471 unref() when they are done. 472 */ 473 ANPTypeface* (*createFromTypeface)(const ANPTypeface* family, 474 ANPTypefaceStyle); 475 476 /** Return the owner count of the typeface. A newly created typeface has an 477 owner count of 1. When the owner count is reaches 0, the typeface is 478 deleted. 479 */ 480 int32_t (*getRefCount)(const ANPTypeface*); 481 482 /** Increment the owner count on the typeface 483 */ 484 void (*ref)(ANPTypeface*); 485 486 /** Decrement the owner count on the typeface. When the count goes to 0, 487 the typeface is deleted. 488 */ 489 void (*unref)(ANPTypeface*); 490 491 /** Return the style bits for the specified typeface 492 */ 493 ANPTypefaceStyle (*getStyle)(const ANPTypeface*); 494 495 /** Some fonts are stored in files. If that is true for the fontID, then 496 this returns the byte length of the full file path. If path is not null, 497 then the full path is copied into path (allocated by the caller), up to 498 length bytes. If index is not null, then it is set to the truetype 499 collection index for this font, or 0 if the font is not in a collection. 500 501 Note: getFontPath does not assume that path is a null-terminated string, 502 so when it succeeds, it only copies the bytes of the file name and 503 nothing else (i.e. it copies exactly the number of bytes returned by the 504 function. If the caller wants to treat path[] as a C string, it must be 505 sure that it is allocated at least 1 byte larger than the returned size, 506 and it must copy in the terminating 0. 507 508 If the fontID does not correspond to a file, then the function returns 509 0, and the path and index parameters are ignored. 510 511 @param fontID The font whose file name is being queried 512 @param path Either NULL, or storage for receiving up to length bytes 513 of the font's file name. Allocated by the caller. 514 @param length The maximum space allocated in path (by the caller). 515 Ignored if path is NULL. 516 @param index Either NULL, or receives the TTC index for this font. 517 If the font is not a TTC, then will be set to 0. 518 @return The byte length of th font's file name, or 0 if the font is not 519 baked by a file. 520 */ 521 int32_t (*getFontPath)(const ANPTypeface*, char path[], int32_t length, 522 int32_t* index); 523 524 /** Return a UTF8 encoded path name for the font directory, or NULL if not 525 supported. If returned, this string address will be valid for the life 526 of the plugin instance. It will always end with a '/' character. 527 */ 528 const char* (*getFontDirectoryPath)(); 529 }; 530 531 struct ANPPaintInterfaceV0 : ANPInterface { 532 /** Return a new paint object, which holds all of the color and style 533 attributes that affect how things (geometry, text, bitmaps) are drawn 534 in a ANPCanvas. 535 536 The paint that is returned is not tied to any particular plugin 537 instance, but it must only be accessed from one thread at a time. 538 */ 539 ANPPaint* (*newPaint)(); 540 void (*deletePaint)(ANPPaint*); 541 542 ANPPaintFlags (*getFlags)(const ANPPaint*); 543 void (*setFlags)(ANPPaint*, ANPPaintFlags); 544 545 ANPColor (*getColor)(const ANPPaint*); 546 void (*setColor)(ANPPaint*, ANPColor); 547 548 ANPPaintStyle (*getStyle)(const ANPPaint*); 549 void (*setStyle)(ANPPaint*, ANPPaintStyle); 550 551 float (*getStrokeWidth)(const ANPPaint*); 552 float (*getStrokeMiter)(const ANPPaint*); 553 ANPPaintCap (*getStrokeCap)(const ANPPaint*); 554 ANPPaintJoin (*getStrokeJoin)(const ANPPaint*); 555 void (*setStrokeWidth)(ANPPaint*, float); 556 void (*setStrokeMiter)(ANPPaint*, float); 557 void (*setStrokeCap)(ANPPaint*, ANPPaintCap); 558 void (*setStrokeJoin)(ANPPaint*, ANPPaintJoin); 559 560 ANPTextEncoding (*getTextEncoding)(const ANPPaint*); 561 ANPPaintAlign (*getTextAlign)(const ANPPaint*); 562 float (*getTextSize)(const ANPPaint*); 563 float (*getTextScaleX)(const ANPPaint*); 564 float (*getTextSkewX)(const ANPPaint*); 565 void (*setTextEncoding)(ANPPaint*, ANPTextEncoding); 566 void (*setTextAlign)(ANPPaint*, ANPPaintAlign); 567 void (*setTextSize)(ANPPaint*, float); 568 void (*setTextScaleX)(ANPPaint*, float); 569 void (*setTextSkewX)(ANPPaint*, float); 570 571 /** Return the typeface ine paint, or null if there is none. This does not 572 modify the owner count of the returned typeface. 573 */ 574 ANPTypeface* (*getTypeface)(const ANPPaint*); 575 576 /** Set the paint's typeface. If the paint already had a non-null typeface, 577 its owner count is decremented. If the new typeface is non-null, its 578 owner count is incremented. 579 */ 580 void (*setTypeface)(ANPPaint*, ANPTypeface*); 581 582 /** Return the width of the text. If bounds is not null, return the bounds 583 of the text in that rectangle. 584 */ 585 float (*measureText)(ANPPaint*, const void* text, uint32_t byteLength, 586 ANPRectF* bounds); 587 588 /** Return the number of unichars specifed by the text. 589 If widths is not null, returns the array of advance widths for each 590 unichar. 591 If bounds is not null, returns the array of bounds for each unichar. 592 */ 593 int (*getTextWidths)(ANPPaint*, const void* text, uint32_t byteLength, 594 float widths[], ANPRectF bounds[]); 595 596 /** Return in metrics the spacing values for text, respecting the paint's 597 typeface and pointsize, and return the spacing between lines 598 (descent - ascent + leading). If metrics is NULL, it will be ignored. 599 */ 600 float (*getFontMetrics)(ANPPaint*, ANPFontMetrics* metrics); 601 }; 602 603 struct ANPCanvasInterfaceV0 : ANPInterface { 604 /** Return a canvas that will draw into the specified bitmap. Note: the 605 canvas copies the fields of the bitmap, so it need not persist after 606 this call, but the canvas DOES point to the same pixel memory that the 607 bitmap did, so the canvas should not be used after that pixel memory 608 goes out of scope. In the case of creating a canvas to draw into the 609 pixels provided by kDraw_ANPEventType, those pixels are only while 610 handling that event. 611 612 The canvas that is returned is not tied to any particular plugin 613 instance, but it must only be accessed from one thread at a time. 614 */ 615 ANPCanvas* (*newCanvas)(const ANPBitmap*); 616 void (*deleteCanvas)(ANPCanvas*); 617 618 void (*save)(ANPCanvas*); 619 void (*restore)(ANPCanvas*); 620 void (*translate)(ANPCanvas*, float tx, float ty); 621 void (*scale)(ANPCanvas*, float sx, float sy); 622 void (*rotate)(ANPCanvas*, float degrees); 623 void (*skew)(ANPCanvas*, float kx, float ky); 624 void (*concat)(ANPCanvas*, const ANPMatrix*); 625 void (*clipRect)(ANPCanvas*, const ANPRectF*); 626 void (*clipPath)(ANPCanvas*, const ANPPath*); 627 628 /** Return the current matrix on the canvas 629 */ 630 void (*getTotalMatrix)(ANPCanvas*, ANPMatrix*); 631 /** Return the current clip bounds in local coordinates, expanding it to 632 account for antialiasing edge effects if aa is true. If the 633 current clip is empty, return false and ignore the bounds argument. 634 */ 635 bool (*getLocalClipBounds)(ANPCanvas*, ANPRectF* bounds, bool aa); 636 /** Return the current clip bounds in device coordinates in bounds. If the 637 current clip is empty, return false and ignore the bounds argument. 638 */ 639 bool (*getDeviceClipBounds)(ANPCanvas*, ANPRectI* bounds); 640 641 void (*drawColor)(ANPCanvas*, ANPColor); 642 void (*drawPaint)(ANPCanvas*, const ANPPaint*); 643 void (*drawLine)(ANPCanvas*, float x0, float y0, float x1, float y1, 644 const ANPPaint*); 645 void (*drawRect)(ANPCanvas*, const ANPRectF*, const ANPPaint*); 646 void (*drawOval)(ANPCanvas*, const ANPRectF*, const ANPPaint*); 647 void (*drawPath)(ANPCanvas*, const ANPPath*, const ANPPaint*); 648 void (*drawText)(ANPCanvas*, const void* text, uint32_t byteLength, 649 float x, float y, const ANPPaint*); 650 void (*drawPosText)(ANPCanvas*, const void* text, uint32_t byteLength, 651 const float xy[], const ANPPaint*); 652 void (*drawBitmap)(ANPCanvas*, const ANPBitmap*, float x, float y, 653 const ANPPaint*); 654 void (*drawBitmapRect)(ANPCanvas*, const ANPBitmap*, 655 const ANPRectI* src, const ANPRectF* dst, 656 const ANPPaint*); 657 }; 658 659 struct ANPWindowInterfaceV0 : ANPInterface { 660 /** Registers a set of rectangles that the plugin would like to keep on 661 screen. The rectangles are listed in order of priority with the highest 662 priority rectangle in location rects[0]. The browser will attempt to keep 663 as many of the rectangles on screen as possible and will scroll them into 664 view in response to the invocation of this method and other various events. 665 The count specifies how many rectangles are in the array. If the count is 666 zero it signals the browser that any existing rectangles should be cleared 667 and no rectangles will be tracked. 668 */ 669 void (*setVisibleRects)(NPP instance, const ANPRectI rects[], int32_t count); 670 /** Clears any rectangles that are being tracked as a result of a call to 671 setVisibleRects. This call is equivalent to setVisibleRect(inst, NULL, 0). 672 */ 673 void (*clearVisibleRects)(NPP instance); 674 /** Given a boolean value of true the device will be requested to provide 675 a keyboard. A value of false will result in a request to hide the 676 keyboard. Further, the on-screen keyboard will not be displayed if a 677 physical keyboard is active. 678 */ 679 void (*showKeyboard)(NPP instance, bool value); 680 /** Called when a plugin wishes to enter into full screen mode. The plugin's 681 Java class (defined in the plugin's apk manifest) will be called 682 asynchronously to provide a View object to be displayed full screen. 683 */ 684 void (*requestFullScreen)(NPP instance); 685 /** Called when a plugin wishes to exit from full screen mode. As a result, 686 the plugin's full screen view will be discarded by the view system. 687 */ 688 void (*exitFullScreen)(NPP instance); 689 /** Called when a plugin wishes to be zoomed and centered in the current view. 690 */ 691 void (*requestCenterFitZoom)(NPP instance); 692 }; 693 694 struct ANPWindowInterfaceV1 : ANPWindowInterfaceV0 { 695 /** Returns a rectangle representing the visible area of the plugin on 696 screen. The coordinates are relative to the size of the plugin in the 697 document and therefore will never be negative or exceed the plugin's size. 698 */ 699 ANPRectI (*visibleRect)(NPP instance); 700 }; 701 702 enum ANPScreenOrientations { 703 /** No preference specified: let the system decide the best orientation. 704 */ 705 kDefault_ANPScreenOrientation = 0, 706 /** Would like to have the screen in a landscape orientation, but it will 707 not allow for 180 degree rotations. 708 */ 709 kFixedLandscape_ANPScreenOrientation = 1, 710 /** Would like to have the screen in a portrait orientation, but it will 711 not allow for 180 degree rotations. 712 */ 713 kFixedPortrait_ANPScreenOrientation = 2, 714 /** Would like to have the screen in landscape orientation, but can use the 715 sensor to change which direction the screen is facing. 716 */ 717 kLandscape_ANPScreenOrientation = 3, 718 /** Would like to have the screen in portrait orientation, but can use the 719 sensor to change which direction the screen is facing. 720 */ 721 kPortrait_ANPScreenOrientation = 4 722 }; 723 typedef int32_t ANPScreenOrientation; 724 725 struct ANPWindowInterfaceV2 : ANPWindowInterfaceV1 { 726 /** Called when the plugin wants to specify a particular screen orientation 727 when entering into full screen mode. The orientation must be set prior 728 to entering into full screen. After entering full screen any subsequent 729 changes will be updated the next time the plugin goes full screen. 730 */ 731 void (*requestFullScreenOrientation)(NPP instance, ANPScreenOrientation orientation); 732 }; 733 734 /////////////////////////////////////////////////////////////////////////////// 735 736 enum ANPSampleFormats { 737 kUnknown_ANPSamleFormat = 0, 738 kPCM16Bit_ANPSampleFormat = 1, 739 kPCM8Bit_ANPSampleFormat = 2 740 }; 741 typedef int32_t ANPSampleFormat; 742 743 /** The audio buffer is passed to the callback proc to request more samples. 744 It is owned by the system, and the callback may read it, but should not 745 maintain a pointer to it outside of the scope of the callback proc. 746 */ 747 struct ANPAudioBuffer { 748 // RO - repeat what was specified in newTrack() 749 int32_t channelCount; 750 // RO - repeat what was specified in newTrack() 751 ANPSampleFormat format; 752 /** This buffer is owned by the caller. Inside the callback proc, up to 753 "size" bytes of sample data should be written into this buffer. The 754 address is only valid for the scope of a single invocation of the 755 callback proc. 756 */ 757 void* bufferData; 758 /** On input, specifies the maximum number of bytes that can be written 759 to "bufferData". On output, specifies the actual number of bytes that 760 the callback proc wrote into "bufferData". 761 */ 762 uint32_t size; 763 }; 764 765 enum ANPAudioEvents { 766 /** This event is passed to the callback proc when the audio-track needs 767 more sample data written to the provided buffer parameter. 768 */ 769 kMoreData_ANPAudioEvent = 0, 770 /** This event is passed to the callback proc if the audio system runs out 771 of sample data. In this event, no buffer parameter will be specified 772 (i.e. NULL will be passed to the 3rd parameter). 773 */ 774 kUnderRun_ANPAudioEvent = 1 775 }; 776 typedef int32_t ANPAudioEvent; 777 778 /** Called to feed sample data to the track. This will be called in a separate 779 thread. However, you may call trackStop() from the callback (but you 780 cannot delete the track). 781 782 For example, when you have written the last chunk of sample data, you can 783 immediately call trackStop(). This will take effect after the current 784 buffer has been played. 785 786 The "user" parameter is the same value that was passed to newTrack() 787 */ 788 typedef void (*ANPAudioCallbackProc)(ANPAudioEvent event, void* user, 789 ANPAudioBuffer* buffer); 790 791 struct ANPAudioTrack; // abstract type for audio tracks 792 793 struct ANPAudioTrackInterfaceV0 : ANPInterface { 794 /** Create a new audio track, or NULL on failure. The track is initially in 795 the stopped state and therefore ANPAudioCallbackProc will not be called 796 until the track is started. 797 */ 798 ANPAudioTrack* (*newTrack)(uint32_t sampleRate, // sampling rate in Hz 799 ANPSampleFormat, 800 int channelCount, // MONO=1, STEREO=2 801 ANPAudioCallbackProc, 802 void* user); 803 /** Deletes a track that was created using newTrack. The track can be 804 deleted in any state and it waits for the ANPAudioCallbackProc thread 805 to exit before returning. 806 */ 807 void (*deleteTrack)(ANPAudioTrack*); 808 809 void (*start)(ANPAudioTrack*); 810 void (*pause)(ANPAudioTrack*); 811 void (*stop)(ANPAudioTrack*); 812 /** Returns true if the track is not playing (e.g. pause or stop was called, 813 or start was never called. 814 */ 815 bool (*isStopped)(ANPAudioTrack*); 816 }; 817 818 struct ANPAudioTrackInterfaceV1 : ANPAudioTrackInterfaceV0 { 819 /** Returns the track's latency in milliseconds. */ 820 uint32_t (*trackLatency)(ANPAudioTrack*); 821 }; 822 823 /////////////////////////////////////////////////////////////////////////////// 824 // DEFINITION OF VALUES PASSED THROUGH NPP_HandleEvent 825 826 enum ANPEventTypes { 827 kNull_ANPEventType = 0, 828 kKey_ANPEventType = 1, 829 /** Mouse events are triggered by either clicking with the navigational pad 830 or by tapping the touchscreen (if the kDown_ANPTouchAction is handled by 831 the plugin then no mouse event is generated). The kKey_ANPEventFlag has 832 to be set to true in order to receive these events. 833 */ 834 kMouse_ANPEventType = 2, 835 /** Touch events are generated when the user touches on the screen. The 836 kTouch_ANPEventFlag has to be set to true in order to receive these 837 events. 838 */ 839 kTouch_ANPEventType = 3, 840 /** Only triggered by a plugin using the kBitmap_ANPDrawingModel. This event 841 signals that the plugin needs to redraw itself into the provided bitmap. 842 */ 843 kDraw_ANPEventType = 4, 844 kLifecycle_ANPEventType = 5, 845 846 /** This event type is completely defined by the plugin. 847 When creating an event, the caller must always set the first 848 two fields, the remaining data is optional. 849 ANPEvent evt; 850 evt.inSize = sizeof(ANPEvent); 851 evt.eventType = kCustom_ANPEventType 852 // other data slots are optional 853 evt.other[] = ...; 854 To post a copy of the event, call 855 eventInterface->postEvent(myNPPInstance, &evt); 856 That call makes a copy of the event struct, and post that on the event 857 queue for the plugin. 858 */ 859 kCustom_ANPEventType = 6, 860 /** MultiTouch events are generated when the user touches on the screen. The 861 kTouch_ANPEventFlag has to be set to true in order to receive these 862 events. This type is a replacement for the older kTouch_ANPEventType. 863 */ 864 kMultiTouch_ANPEventType = 7, 865 }; 866 typedef int32_t ANPEventType; 867 868 enum ANPKeyActions { 869 kDown_ANPKeyAction = 0, 870 kUp_ANPKeyAction = 1, 871 }; 872 typedef int32_t ANPKeyAction; 873 874 #include "ANPKeyCodes.h" 875 typedef int32_t ANPKeyCode; 876 877 enum ANPKeyModifiers { 878 kAlt_ANPKeyModifier = 1 << 0, 879 kShift_ANPKeyModifier = 1 << 1, 880 }; 881 // bit-field containing some number of ANPKeyModifier bits 882 typedef uint32_t ANPKeyModifier; 883 884 enum ANPMouseActions { 885 kDown_ANPMouseAction = 0, 886 kUp_ANPMouseAction = 1, 887 }; 888 typedef int32_t ANPMouseAction; 889 890 enum ANPTouchActions { 891 /** This occurs when the user first touches on the screen. As such, this 892 action will always occur prior to any of the other touch actions. If 893 the plugin chooses to not handle this action then no other events 894 related to that particular touch gesture will be generated. 895 */ 896 kDown_ANPTouchAction = 0, 897 kUp_ANPTouchAction = 1, 898 kMove_ANPTouchAction = 2, 899 kCancel_ANPTouchAction = 3, 900 // The web view will ignore the return value from the following actions 901 kLongPress_ANPTouchAction = 4, 902 kDoubleTap_ANPTouchAction = 5, 903 }; 904 typedef int32_t ANPTouchAction; 905 906 enum ANPLifecycleActions { 907 /** The web view containing this plugin has been paused. See documentation 908 on the android activity lifecycle for more information. 909 */ 910 kPause_ANPLifecycleAction = 0, 911 /** The web view containing this plugin has been resumed. See documentation 912 on the android activity lifecycle for more information. 913 */ 914 kResume_ANPLifecycleAction = 1, 915 /** The plugin has focus and is now the recipient of input events (e.g. key, 916 touch, etc.) 917 */ 918 kGainFocus_ANPLifecycleAction = 2, 919 /** The plugin has lost focus and will not receive any input events until it 920 regains focus. This event is always preceded by a GainFocus action. 921 */ 922 kLoseFocus_ANPLifecycleAction = 3, 923 /** The browser is running low on available memory and is requesting that 924 the plugin free any unused/inactive resources to prevent a performance 925 degradation. 926 */ 927 kFreeMemory_ANPLifecycleAction = 4, 928 /** The page has finished loading. This happens when the page's top level 929 frame reports that it has completed loading. 930 */ 931 kOnLoad_ANPLifecycleAction = 5, 932 /** The browser is honoring the plugin's request to go full screen. Upon 933 returning from this event the browser will resize the plugin's java 934 surface to full-screen coordinates. 935 */ 936 kEnterFullScreen_ANPLifecycleAction = 6, 937 /** The browser has exited from full screen mode. Immediately prior to 938 sending this event the browser has resized the plugin's java surface to 939 its original coordinates. 940 */ 941 kExitFullScreen_ANPLifecycleAction = 7, 942 /** The plugin is visible to the user on the screen. This event will always 943 occur after a kOffScreen_ANPLifecycleAction event. 944 */ 945 kOnScreen_ANPLifecycleAction = 8, 946 /** The plugin is no longer visible to the user on the screen. This event 947 will always occur prior to an kOnScreen_ANPLifecycleAction event. 948 */ 949 kOffScreen_ANPLifecycleAction = 9, 950 }; 951 typedef uint32_t ANPLifecycleAction; 952 953 struct TouchPoint { 954 int32_t id; 955 float x; // relative to your "window" (0...width) 956 float y; // relative to your "window" (0...height) 957 float pressure; 958 float size; // normalized to a value between 0...1 959 }; 960 961 /* This is what is passed to NPP_HandleEvent() */ 962 struct ANPEvent { 963 uint32_t inSize; // size of this struct in bytes 964 ANPEventType eventType; 965 // use based on the value in eventType 966 union { 967 struct { 968 ANPKeyAction action; 969 ANPKeyCode nativeCode; 970 int32_t virtualCode; // windows virtual key code 971 ANPKeyModifier modifiers; 972 int32_t repeatCount; // 0 for initial down (or up) 973 int32_t unichar; // 0 if there is no value 974 } key; 975 struct { 976 ANPMouseAction action; 977 int32_t x; // relative to your "window" (0...width) 978 int32_t y; // relative to your "window" (0...height) 979 } mouse; 980 struct { 981 ANPTouchAction action; 982 ANPKeyModifier modifiers; 983 int32_t x; // relative to your "window" (0...width) 984 int32_t y; // relative to your "window" (0...height) 985 } touch; 986 struct { 987 ANPLifecycleAction action; 988 } lifecycle; 989 struct { 990 ANPDrawingModel model; 991 // relative to (0,0) in top-left of your plugin 992 ANPRectI clip; 993 // use based on the value in model 994 union { 995 ANPBitmap bitmap; 996 struct { 997 int32_t width; 998 int32_t height; 999 } surface; 1000 } data; 1001 } draw; 1002 struct { 1003 int64_t timestamp; 1004 int32_t id; 1005 ANPTouchAction action; 1006 int32_t pointerCount; 1007 TouchPoint* touchPoint; 1008 } multiTouch; 1009 int32_t other[8]; 1010 } data; 1011 }; 1012 1013 struct ANPEventInterfaceV0 : ANPInterface { 1014 /** Post a copy of the specified event to the plugin. The event will be 1015 delivered to the plugin in its main thread (the thread that receives 1016 other ANPEvents). If, after posting before delivery, the NPP instance 1017 is torn down, the event will be discarded. 1018 */ 1019 void (*postEvent)(NPP inst, const ANPEvent* event); 1020 }; 1021 1022 1023 #endif 1024
