2 * Copyright 2013 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
11 #include "SkDocument.h"
16 #include "SkPixelRef.h"
19 #include "SkTypeface.h"
27 // return the metatable name for a given class
28 template <typename T> const char* get_mtname();
29 #define DEF_MTNAME(T) \
30 template <> const char* get_mtname<T>() { \
31 return #T "_LuaMetaTableName"; \
35 DEF_MTNAME(SkDocument)
42 DEF_MTNAME(SkTypeface)
44 template <typename T> T* push_new(lua_State* L) {
45 T* addr = (T*)lua_newuserdata(L, sizeof(T));
47 luaL_getmetatable(L, get_mtname<T>());
48 lua_setmetatable(L, -2);
52 template <typename T> void push_obj(lua_State* L, const T& obj) {
53 new (lua_newuserdata(L, sizeof(T))) T(obj);
54 luaL_getmetatable(L, get_mtname<T>());
55 lua_setmetatable(L, -2);
58 template <typename T> void push_ref(lua_State* L, T* ref) {
59 *(T**)lua_newuserdata(L, sizeof(T*)) = SkSafeRef(ref);
60 luaL_getmetatable(L, get_mtname<T>());
61 lua_setmetatable(L, -2);
64 template <typename T> T* get_ref(lua_State* L, int index) {
65 return *(T**)luaL_checkudata(L, index, get_mtname<T>());
68 template <typename T> T* get_obj(lua_State* L, int index) {
69 return (T*)luaL_checkudata(L, index, get_mtname<T>());
72 static bool lua2bool(lua_State* L, int index) {
73 return !!lua_toboolean(L, index);
76 ///////////////////////////////////////////////////////////////////////////////
78 SkLua::SkLua(const char termCode[]) : fTermCode(termCode), fWeOwnL(true) {
84 SkLua::SkLua(lua_State* L) : fL(L), fWeOwnL(false) {}
88 if (fTermCode.size() > 0) {
89 lua_getglobal(fL, fTermCode.c_str());
90 if (lua_pcall(fL, 0, 0, 0) != LUA_OK) {
91 SkDebugf("lua err: %s\n", lua_tostring(fL, -1));
98 bool SkLua::runCode(const char code[]) {
99 int err = luaL_loadstring(fL, code) || lua_pcall(fL, 0, 0, 0);
101 SkDebugf("--- lua failed: %s\n", lua_tostring(fL, -1));
107 bool SkLua::runCode(const void* code, size_t size) {
108 SkString str((const char*)code, size);
109 return this->runCode(str.c_str());
112 ///////////////////////////////////////////////////////////////////////////////
114 #define CHECK_SETFIELD(key) do if (key) lua_setfield(fL, -2, key); while (0)
116 static void setfield_bool_if(lua_State* L, const char key[], bool pred) {
118 lua_pushboolean(L, true);
119 lua_setfield(L, -2, key);
123 static void setfield_string(lua_State* L, const char key[], const char value[]) {
124 lua_pushstring(L, value);
125 lua_setfield(L, -2, key);
128 static void setfield_number(lua_State* L, const char key[], double value) {
129 lua_pushnumber(L, value);
130 lua_setfield(L, -2, key);
133 static void setfield_boolean(lua_State* L, const char key[], bool value) {
134 lua_pushboolean(L, value);
135 lua_setfield(L, -2, key);
138 static void setfield_scalar(lua_State* L, const char key[], SkScalar value) {
139 setfield_number(L, key, SkScalarToLua(value));
142 static void setfield_function(lua_State* L,
143 const char key[], lua_CFunction value) {
144 lua_pushcfunction(L, value);
145 lua_setfield(L, -2, key);
148 static void setarray_number(lua_State* L, int index, double value) {
149 lua_pushnumber(L, value);
150 lua_rawseti(L, -2, index);
153 void SkLua::pushBool(bool value, const char key[]) {
154 lua_pushboolean(fL, value);
158 void SkLua::pushString(const char str[], const char key[]) {
159 lua_pushstring(fL, str);
163 void SkLua::pushString(const char str[], size_t length, const char key[]) {
164 // TODO: how to do this w/o making a copy?
165 SkString s(str, length);
166 lua_pushstring(fL, s.c_str());
170 void SkLua::pushString(const SkString& str, const char key[]) {
171 lua_pushstring(fL, str.c_str());
175 void SkLua::pushColor(SkColor color, const char key[]) {
177 setfield_number(fL, "a", SkColorGetA(color) / 255.0);
178 setfield_number(fL, "r", SkColorGetR(color) / 255.0);
179 setfield_number(fL, "g", SkColorGetG(color) / 255.0);
180 setfield_number(fL, "b", SkColorGetB(color) / 255.0);
184 void SkLua::pushU32(uint32_t value, const char key[]) {
185 lua_pushnumber(fL, (double)value);
189 void SkLua::pushScalar(SkScalar value, const char key[]) {
190 lua_pushnumber(fL, SkScalarToLua(value));
194 void SkLua::pushArrayU16(const uint16_t array[], int count, const char key[]) {
196 for (int i = 0; i < count; ++i) {
197 // make it base-1 to match lua convention
198 setarray_number(fL, i + 1, (double)array[i]);
203 void SkLua::pushRect(const SkRect& r, const char key[]) {
205 setfield_scalar(fL, "left", r.fLeft);
206 setfield_scalar(fL, "top", r.fTop);
207 setfield_scalar(fL, "right", r.fRight);
208 setfield_scalar(fL, "bottom", r.fBottom);
212 void SkLua::pushRRect(const SkRRect& rr, const char key[]) {
217 void SkLua::pushMatrix(const SkMatrix& matrix, const char key[]) {
218 push_obj(fL, matrix);
222 void SkLua::pushPaint(const SkPaint& paint, const char key[]) {
227 void SkLua::pushPath(const SkPath& path, const char key[]) {
232 void SkLua::pushCanvas(SkCanvas* canvas, const char key[]) {
233 push_ref(fL, canvas);
237 ///////////////////////////////////////////////////////////////////////////////
238 ///////////////////////////////////////////////////////////////////////////////
240 static SkScalar lua2scalar(lua_State* L, int index) {
241 SkASSERT(lua_isnumber(L, index));
242 return SkLuaToScalar(lua_tonumber(L, index));
245 static SkScalar lua2scalar_def(lua_State* L, int index, SkScalar defaultValue) {
246 if (lua_isnumber(L, index)) {
247 return SkLuaToScalar(lua_tonumber(L, index));
253 static SkScalar getfield_scalar(lua_State* L, int index, const char key[]) {
254 SkASSERT(lua_istable(L, index));
255 lua_pushstring(L, key);
256 lua_gettable(L, index);
258 SkScalar value = lua2scalar(L, -1);
263 static SkScalar getfield_scalar_default(lua_State* L, int index, const char key[], SkScalar def) {
264 SkASSERT(lua_istable(L, index));
265 lua_pushstring(L, key);
266 lua_gettable(L, index);
269 if (lua_isnil(L, -1)) {
272 value = lua2scalar(L, -1);
278 static U8CPU unit2byte(SkScalar x) {
284 return SkScalarRoundToInt(x * 255);
288 static SkColor lua2color(lua_State* L, int index) {
289 return SkColorSetARGB(unit2byte(getfield_scalar(L, index, "a")),
290 unit2byte(getfield_scalar(L, index, "r")),
291 unit2byte(getfield_scalar(L, index, "g")),
292 unit2byte(getfield_scalar(L, index, "b")));
295 static SkRect* lua2rect(lua_State* L, int index, SkRect* rect) {
296 rect->set(getfield_scalar_default(L, index, "left", 0),
297 getfield_scalar_default(L, index, "top", 0),
298 getfield_scalar(L, index, "right"),
299 getfield_scalar(L, index, "bottom"));
303 static int lcanvas_drawColor(lua_State* L) {
304 get_ref<SkCanvas>(L, 1)->drawColor(lua2color(L, 2));
308 static int lcanvas_drawRect(lua_State* L) {
310 get_ref<SkCanvas>(L, 1)->drawRect(*lua2rect(L, 2, &rect),
311 *get_obj<SkPaint>(L, 3));
315 static int lcanvas_drawOval(lua_State* L) {
317 get_ref<SkCanvas>(L, 1)->drawOval(*lua2rect(L, 2, &rect),
318 *get_obj<SkPaint>(L, 3));
322 static int lcanvas_drawCircle(lua_State* L) {
323 get_ref<SkCanvas>(L, 1)->drawCircle(lua2scalar(L, 2),
326 *get_obj<SkPaint>(L, 5));
330 static int lcanvas_drawImage(lua_State* L) {
331 SkCanvas* canvas = get_ref<SkCanvas>(L, 1);
332 SkImage* image = get_ref<SkImage>(L, 2);
336 SkScalar x = lua2scalar(L, 3);
337 SkScalar y = lua2scalar(L, 4);
340 const SkPaint* paintPtr = NULL;
341 if (lua_isnumber(L, 5)) {
342 paint.setAlpha(SkScalarRoundToInt(lua2scalar(L, 5) * 255));
345 image->draw(canvas, x, y, paintPtr);
349 static int lcanvas_drawPath(lua_State* L) {
350 get_ref<SkCanvas>(L, 1)->drawPath(*get_obj<SkPath>(L, 2),
351 *get_obj<SkPaint>(L, 3));
355 static int lcanvas_drawText(lua_State* L) {
356 if (lua_gettop(L) < 5) {
360 if (lua_isstring(L, 2) && lua_isnumber(L, 3) && lua_isnumber(L, 4)) {
362 const char* text = lua_tolstring(L, 2, &len);
363 get_ref<SkCanvas>(L, 1)->drawText(text, len,
364 lua2scalar(L, 3), lua2scalar(L, 4),
365 *get_obj<SkPaint>(L, 5));
370 static int lcanvas_getSaveCount(lua_State* L) {
371 lua_pushnumber(L, get_ref<SkCanvas>(L, 1)->getSaveCount());
375 static int lcanvas_getTotalMatrix(lua_State* L) {
376 SkLua(L).pushMatrix(get_ref<SkCanvas>(L, 1)->getTotalMatrix());
380 static int lcanvas_save(lua_State* L) {
381 lua_pushinteger(L, get_ref<SkCanvas>(L, 1)->save());
385 static int lcanvas_restore(lua_State* L) {
386 get_ref<SkCanvas>(L, 1)->restore();
390 static int lcanvas_scale(lua_State* L) {
391 SkScalar sx = lua2scalar_def(L, 2, 1);
392 SkScalar sy = lua2scalar_def(L, 3, sx);
393 get_ref<SkCanvas>(L, 1)->scale(sx, sy);
397 static int lcanvas_translate(lua_State* L) {
398 SkScalar tx = lua2scalar_def(L, 2, 0);
399 SkScalar ty = lua2scalar_def(L, 3, 0);
400 get_ref<SkCanvas>(L, 1)->translate(tx, ty);
404 static int lcanvas_rotate(lua_State* L) {
405 SkScalar degrees = lua2scalar_def(L, 2, 0);
406 get_ref<SkCanvas>(L, 1)->rotate(degrees);
410 static int lcanvas_gc(lua_State* L) {
411 get_ref<SkCanvas>(L, 1)->unref();
415 static const struct luaL_Reg gSkCanvas_Methods[] = {
416 { "drawColor", lcanvas_drawColor },
417 { "drawRect", lcanvas_drawRect },
418 { "drawOval", lcanvas_drawOval },
419 { "drawCircle", lcanvas_drawCircle },
420 { "drawImage", lcanvas_drawImage },
421 { "drawPath", lcanvas_drawPath },
422 { "drawText", lcanvas_drawText },
423 { "getSaveCount", lcanvas_getSaveCount },
424 { "getTotalMatrix", lcanvas_getTotalMatrix },
425 { "save", lcanvas_save },
426 { "restore", lcanvas_restore },
427 { "scale", lcanvas_scale },
428 { "translate", lcanvas_translate },
429 { "rotate", lcanvas_rotate },
430 { "__gc", lcanvas_gc },
434 ///////////////////////////////////////////////////////////////////////////////
436 static int ldocument_beginPage(lua_State* L) {
437 const SkRect* contentPtr = NULL;
438 push_ref(L, get_ref<SkDocument>(L, 1)->beginPage(lua2scalar(L, 2),
444 static int ldocument_endPage(lua_State* L) {
445 get_ref<SkDocument>(L, 1)->endPage();
449 static int ldocument_close(lua_State* L) {
450 get_ref<SkDocument>(L, 1)->close();
454 static int ldocument_gc(lua_State* L) {
455 get_ref<SkDocument>(L, 1)->unref();
459 static const struct luaL_Reg gSkDocument_Methods[] = {
460 { "beginPage", ldocument_beginPage },
461 { "endPage", ldocument_endPage },
462 { "close", ldocument_close },
463 { "__gc", ldocument_gc },
467 ///////////////////////////////////////////////////////////////////////////////
469 static int lpaint_isAntiAlias(lua_State* L) {
470 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isAntiAlias());
474 static int lpaint_setAntiAlias(lua_State* L) {
475 get_obj<SkPaint>(L, 1)->setAntiAlias(lua2bool(L, 2));
479 static int lpaint_isDither(lua_State* L) {
480 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isDither());
484 static int lpaint_isUnderlineText(lua_State* L) {
485 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isUnderlineText());
489 static int lpaint_isStrikeThruText(lua_State* L) {
490 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isStrikeThruText());
494 static int lpaint_isFakeBoldText(lua_State* L) {
495 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isFakeBoldText());
499 static int lpaint_isLinearText(lua_State* L) {
500 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isLinearText());
504 static int lpaint_isSubpixelText(lua_State* L) {
505 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isSubpixelText());
509 static int lpaint_isDevKernText(lua_State* L) {
510 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isDevKernText());
514 static int lpaint_isLCDRenderText(lua_State* L) {
515 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isLCDRenderText());
519 static int lpaint_isEmbeddedBitmapText(lua_State* L) {
520 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isEmbeddedBitmapText());
524 static int lpaint_isAutohinted(lua_State* L) {
525 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isAutohinted());
529 static int lpaint_isVerticalText(lua_State* L) {
530 lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isVerticalText());
534 static int lpaint_getColor(lua_State* L) {
535 SkLua(L).pushColor(get_obj<SkPaint>(L, 1)->getColor());
539 static int lpaint_setColor(lua_State* L) {
540 get_obj<SkPaint>(L, 1)->setColor(lua2color(L, 2));
544 static int lpaint_getTextSize(lua_State* L) {
545 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextSize());
549 static int lpaint_getTextScaleX(lua_State* L) {
550 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextScaleX());
554 static int lpaint_getTextSkewX(lua_State* L) {
555 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextSkewX());
559 static int lpaint_setTextSize(lua_State* L) {
560 get_obj<SkPaint>(L, 1)->setTextSize(lua2scalar(L, 2));
564 static int lpaint_getTypeface(lua_State* L) {
565 push_ref(L, get_obj<SkPaint>(L, 1)->getTypeface());
569 static int lpaint_setTypeface(lua_State* L) {
570 get_obj<SkPaint>(L, 1)->setTypeface(get_ref<SkTypeface>(L, 2));
574 static int lpaint_getHinting(lua_State* L) {
575 SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getHinting());
579 static int lpaint_getFontID(lua_State* L) {
580 SkTypeface* face = get_obj<SkPaint>(L, 1)->getTypeface();
581 SkLua(L).pushU32(SkTypeface::UniqueID(face));
585 static const struct {
587 SkPaint::Align fAlign;
589 { "left", SkPaint::kLeft_Align },
590 { "center", SkPaint::kCenter_Align },
591 { "right", SkPaint::kRight_Align },
594 static int lpaint_getTextAlign(lua_State* L) {
595 SkPaint::Align align = get_obj<SkPaint>(L, 1)->getTextAlign();
596 for (size_t i = 0; i < SK_ARRAY_COUNT(gAlignRec); ++i) {
597 if (gAlignRec[i].fAlign == align) {
598 lua_pushstring(L, gAlignRec[i].fLabel);
605 static int lpaint_setTextAlign(lua_State* L) {
606 if (lua_isstring(L, 2)) {
608 const char* label = lua_tolstring(L, 2, &len);
610 for (size_t i = 0; i < SK_ARRAY_COUNT(gAlignRec); ++i) {
611 if (!strcmp(gAlignRec[i].fLabel, label)) {
612 get_obj<SkPaint>(L, 1)->setTextAlign(gAlignRec[i].fAlign);
620 static int lpaint_getStroke(lua_State* L) {
621 lua_pushboolean(L, SkPaint::kStroke_Style == get_obj<SkPaint>(L, 1)->getStyle());
625 static int lpaint_setStroke(lua_State* L) {
626 SkPaint::Style style;
628 if (lua_toboolean(L, 2)) {
629 style = SkPaint::kStroke_Style;
631 style = SkPaint::kFill_Style;
633 get_obj<SkPaint>(L, 1)->setStyle(style);
637 static int lpaint_getStrokeCap(lua_State* L) {
638 SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getStrokeCap());
642 static int lpaint_getStrokeJoin(lua_State* L) {
643 SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getStrokeJoin());
647 static int lpaint_getTextEncoding(lua_State* L) {
648 SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getTextEncoding());
652 static int lpaint_getStrokeWidth(lua_State* L) {
653 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getStrokeWidth());
657 static int lpaint_setStrokeWidth(lua_State* L) {
658 get_obj<SkPaint>(L, 1)->setStrokeWidth(lua2scalar(L, 2));
662 static int lpaint_getStrokeMiter(lua_State* L) {
663 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getStrokeMiter());
667 static int lpaint_measureText(lua_State* L) {
668 if (lua_isstring(L, 2)) {
670 const char* text = lua_tolstring(L, 2, &len);
671 SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->measureText(text, len));
678 SkScalar fTop; //!< The greatest distance above the baseline for any glyph (will be <= 0)
679 SkScalar fAscent; //!< The recommended distance above the baseline (will be <= 0)
680 SkScalar fDescent; //!< The recommended distance below the baseline (will be >= 0)
681 SkScalar fBottom; //!< The greatest distance below the baseline for any glyph (will be >= 0)
682 SkScalar fLeading; //!< The recommended distance to add between lines of text (will be >= 0)
683 SkScalar fAvgCharWidth; //!< the average charactor width (>= 0)
684 SkScalar fXMin; //!< The minimum bounding box x value for all glyphs
685 SkScalar fXMax; //!< The maximum bounding box x value for all glyphs
686 SkScalar fXHeight; //!< the height of an 'x' in px, or 0 if no 'x' in face
689 static int lpaint_getFontMetrics(lua_State* L) {
690 SkPaint::FontMetrics fm;
691 SkScalar height = get_obj<SkPaint>(L, 1)->getFontMetrics(&fm);
694 setfield_scalar(L, "top", fm.fTop);
695 setfield_scalar(L, "ascent", fm.fAscent);
696 setfield_scalar(L, "descent", fm.fDescent);
697 setfield_scalar(L, "bottom", fm.fBottom);
698 setfield_scalar(L, "leading", fm.fLeading);
699 SkLua(L).pushScalar(height);
703 static int lpaint_getEffects(lua_State* L) {
704 const SkPaint* paint = get_obj<SkPaint>(L, 1);
707 setfield_bool_if(L, "looper", !!paint->getLooper());
708 setfield_bool_if(L, "pathEffect", !!paint->getPathEffect());
709 setfield_bool_if(L, "rasterizer", !!paint->getRasterizer());
710 setfield_bool_if(L, "maskFilter", !!paint->getMaskFilter());
711 setfield_bool_if(L, "shader", !!paint->getShader());
712 setfield_bool_if(L, "colorFilter", !!paint->getColorFilter());
713 setfield_bool_if(L, "imageFilter", !!paint->getImageFilter());
714 setfield_bool_if(L, "xfermode", !!paint->getXfermode());
718 static int lpaint_getShader(lua_State* L) {
719 const SkPaint* paint = get_obj<SkPaint>(L, 1);
720 SkShader* shader = paint->getShader();
728 static int lpaint_gc(lua_State* L) {
729 get_obj<SkPaint>(L, 1)->~SkPaint();
733 static const struct luaL_Reg gSkPaint_Methods[] = {
734 { "isAntiAlias", lpaint_isAntiAlias },
735 { "setAntiAlias", lpaint_setAntiAlias },
736 { "isDither", lpaint_isDither },
737 { "isUnderlineText", lpaint_isUnderlineText },
738 { "isStrikeThruText", lpaint_isStrikeThruText },
739 { "isFakeBoldText", lpaint_isFakeBoldText },
740 { "isLinearText", lpaint_isLinearText },
741 { "isSubpixelText", lpaint_isSubpixelText },
742 { "isDevKernText", lpaint_isDevKernText },
743 { "isLCDRenderText", lpaint_isLCDRenderText },
744 { "isEmbeddedBitmapText", lpaint_isEmbeddedBitmapText },
745 { "isAutohinted", lpaint_isAutohinted },
746 { "isVerticalText", lpaint_isVerticalText },
747 { "getColor", lpaint_getColor },
748 { "setColor", lpaint_setColor },
749 { "getTextSize", lpaint_getTextSize },
750 { "setTextSize", lpaint_setTextSize },
751 { "getTextScaleX", lpaint_getTextScaleX },
752 { "getTextSkewX", lpaint_getTextSkewX },
753 { "getTypeface", lpaint_getTypeface },
754 { "setTypeface", lpaint_setTypeface },
755 { "getHinting", lpaint_getHinting },
756 { "getFontID", lpaint_getFontID },
757 { "getTextAlign", lpaint_getTextAlign },
758 { "setTextAlign", lpaint_setTextAlign },
759 { "getStroke", lpaint_getStroke },
760 { "setStroke", lpaint_setStroke },
761 { "getStrokeCap", lpaint_getStrokeCap },
762 { "getStrokeJoin", lpaint_getStrokeJoin },
763 { "getTextEncoding", lpaint_getTextEncoding },
764 { "getStrokeWidth", lpaint_getStrokeWidth },
765 { "setStrokeWidth", lpaint_setStrokeWidth },
766 { "getStrokeMiter", lpaint_getStrokeMiter },
767 { "measureText", lpaint_measureText },
768 { "getFontMetrics", lpaint_getFontMetrics },
769 { "getEffects", lpaint_getEffects },
770 { "getShader", lpaint_getShader },
771 { "__gc", lpaint_gc },
775 ///////////////////////////////////////////////////////////////////////////////
777 static const char* mode2string(SkShader::TileMode mode) {
778 static const char* gNames[] = { "clamp", "repeat", "mirror" };
779 SkASSERT((unsigned)mode < SK_ARRAY_COUNT(gNames));
783 static const char* gradtype2string(SkShader::GradientType t) {
784 static const char* gNames[] = {
785 "none", "color", "linear", "radial", "radial2", "sweep", "conical"
787 SkASSERT((unsigned)t < SK_ARRAY_COUNT(gNames));
791 static int lshader_isOpaque(lua_State* L) {
792 SkShader* shader = get_ref<SkShader>(L, 1);
793 return shader && shader->isOpaque();
796 static int lshader_asABitmap(lua_State* L) {
797 SkShader* shader = get_ref<SkShader>(L, 1);
801 SkShader::TileMode modes[2];
802 switch (shader->asABitmap(&bm, &matrix, modes)) {
803 case SkShader::kDefault_BitmapType:
805 setfield_number(L, "genID", bm.pixelRef() ? bm.pixelRef()->getGenerationID() : 0);
806 setfield_number(L, "width", bm.width());
807 setfield_number(L, "height", bm.height());
808 setfield_string(L, "tileX", mode2string(modes[0]));
809 setfield_string(L, "tileY", mode2string(modes[1]));
818 static int lshader_asAGradient(lua_State* L) {
819 SkShader* shader = get_ref<SkShader>(L, 1);
821 SkShader::GradientInfo info;
822 sk_bzero(&info, sizeof(info));
824 SkColor colors[3]; // hacked in for extracting info on 3 color case.
827 info.fColorCount = 3;
828 info.fColors = &colors[0];
829 info.fColorOffsets = &pos[0];
831 SkShader::GradientType t = shader->asAGradient(&info);
833 if (SkShader::kNone_GradientType != t) {
835 setfield_string(L, "type", gradtype2string(t));
836 setfield_number(L, "colorCount", info.fColorCount);
837 setfield_string(L, "tile", mode2string(info.fTileMode));
839 if (info.fColorCount == 3){
840 setfield_number(L, "midPos", pos[1]);
849 static int lshader_gc(lua_State* L) {
850 get_ref<SkShader>(L, 1)->unref();
854 static const struct luaL_Reg gSkShader_Methods[] = {
855 { "isOpaque", lshader_isOpaque },
856 { "asABitmap", lshader_asABitmap },
857 { "asAGradient", lshader_asAGradient },
858 { "__gc", lshader_gc },
862 ///////////////////////////////////////////////////////////////////////////////
864 static int lmatrix_getType(lua_State* L) {
865 SkMatrix::TypeMask mask = get_obj<SkMatrix>(L, 1)->getType();
868 setfield_boolean(L, "translate", SkToBool(mask & SkMatrix::kTranslate_Mask));
869 setfield_boolean(L, "scale", SkToBool(mask & SkMatrix::kScale_Mask));
870 setfield_boolean(L, "affine", SkToBool(mask & SkMatrix::kAffine_Mask));
871 setfield_boolean(L, "perspective", SkToBool(mask & SkMatrix::kPerspective_Mask));
875 static int lmatrix_getScaleX(lua_State* L) {
876 lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getScaleX());
880 static int lmatrix_getScaleY(lua_State* L) {
881 lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getScaleY());
885 static int lmatrix_getTranslateX(lua_State* L) {
886 lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getTranslateX());
890 static int lmatrix_getTranslateY(lua_State* L) {
891 lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getTranslateY());
895 static const struct luaL_Reg gSkMatrix_Methods[] = {
896 { "getType", lmatrix_getType },
897 { "getScaleX", lmatrix_getScaleX },
898 { "getScaleY", lmatrix_getScaleY },
899 { "getTranslateX", lmatrix_getTranslateX },
900 { "getTranslateY", lmatrix_getTranslateY },
904 ///////////////////////////////////////////////////////////////////////////////
906 static int lpath_getBounds(lua_State* L) {
907 SkLua(L).pushRect(get_obj<SkPath>(L, 1)->getBounds());
911 static int lpath_isEmpty(lua_State* L) {
912 lua_pushboolean(L, get_obj<SkPath>(L, 1)->isEmpty());
916 static int lpath_isRect(lua_State* L) {
918 bool pred = get_obj<SkPath>(L, 1)->isRect(&r);
920 lua_pushboolean(L, pred);
922 SkLua(L).pushRect(r);
928 static const char* dir2string(SkPath::Direction dir) {
929 static const char* gStr[] = {
930 "unknown", "cw", "ccw"
932 SkASSERT((unsigned)dir < SK_ARRAY_COUNT(gStr));
936 static int lpath_isNestedRects(lua_State* L) {
938 SkPath::Direction dirs[2];
939 bool pred = get_obj<SkPath>(L, 1)->isNestedRects(rects, dirs);
941 lua_pushboolean(L, pred);
944 lua.pushRect(rects[0]);
945 lua.pushRect(rects[1]);
946 lua_pushstring(L, dir2string(dirs[0]));
947 lua_pushstring(L, dir2string(dirs[0]));
953 static int lpath_reset(lua_State* L) {
954 get_obj<SkPath>(L, 1)->reset();
958 static int lpath_moveTo(lua_State* L) {
959 get_obj<SkPath>(L, 1)->moveTo(lua2scalar(L, 2), lua2scalar(L, 3));
963 static int lpath_lineTo(lua_State* L) {
964 get_obj<SkPath>(L, 1)->lineTo(lua2scalar(L, 2), lua2scalar(L, 3));
968 static int lpath_quadTo(lua_State* L) {
969 get_obj<SkPath>(L, 1)->quadTo(lua2scalar(L, 2), lua2scalar(L, 3),
970 lua2scalar(L, 4), lua2scalar(L, 5));
974 static int lpath_cubicTo(lua_State* L) {
975 get_obj<SkPath>(L, 1)->cubicTo(lua2scalar(L, 2), lua2scalar(L, 3),
976 lua2scalar(L, 4), lua2scalar(L, 5),
977 lua2scalar(L, 6), lua2scalar(L, 7));
981 static int lpath_close(lua_State* L) {
982 get_obj<SkPath>(L, 1)->close();
986 static int lpath_gc(lua_State* L) {
987 get_obj<SkPath>(L, 1)->~SkPath();
991 static const struct luaL_Reg gSkPath_Methods[] = {
992 { "getBounds", lpath_getBounds },
993 { "isEmpty", lpath_isEmpty },
994 { "isRect", lpath_isRect },
995 { "isNestedRects", lpath_isNestedRects },
996 { "reset", lpath_reset },
997 { "moveTo", lpath_moveTo },
998 { "lineTo", lpath_lineTo },
999 { "quadTo", lpath_quadTo },
1000 { "cubicTo", lpath_cubicTo },
1001 { "close", lpath_close },
1002 { "__gc", lpath_gc },
1006 ///////////////////////////////////////////////////////////////////////////////
1008 static const char* rrect_type(const SkRRect& rr) {
1009 switch (rr.getType()) {
1010 case SkRRect::kUnknown_Type: return "unknown";
1011 case SkRRect::kEmpty_Type: return "empty";
1012 case SkRRect::kRect_Type: return "rect";
1013 case SkRRect::kOval_Type: return "oval";
1014 case SkRRect::kSimple_Type: return "simple";
1015 case SkRRect::kComplex_Type: return "complex";
1017 SkDEBUGFAIL("never get here");
1021 static int lrrect_rect(lua_State* L) {
1022 SkLua(L).pushRect(get_obj<SkRRect>(L, 1)->rect());
1026 static int lrrect_type(lua_State* L) {
1027 lua_pushstring(L, rrect_type(*get_obj<SkRRect>(L, 1)));
1031 static int lrrect_radii(lua_State* L) {
1032 int corner = SkToInt(lua_tointeger(L, 2));
1034 if (corner < 0 || corner > 3) {
1035 SkDebugf("bad corner index %d", corner);
1038 v = get_obj<SkRRect>(L, 1)->radii((SkRRect::Corner)corner);
1040 lua_pushnumber(L, v.fX);
1041 lua_pushnumber(L, v.fY);
1045 static int lrrect_gc(lua_State* L) {
1046 get_obj<SkRRect>(L, 1)->~SkRRect();
1050 static const struct luaL_Reg gSkRRect_Methods[] = {
1051 { "rect", lrrect_rect },
1052 { "type", lrrect_type },
1053 { "radii", lrrect_radii },
1054 { "__gc", lrrect_gc },
1058 ///////////////////////////////////////////////////////////////////////////////
1060 static int limage_width(lua_State* L) {
1061 lua_pushinteger(L, get_ref<SkImage>(L, 1)->width());
1065 static int limage_height(lua_State* L) {
1066 lua_pushinteger(L, get_ref<SkImage>(L, 1)->height());
1070 static int limage_gc(lua_State* L) {
1071 get_ref<SkImage>(L, 1)->unref();
1075 static const struct luaL_Reg gSkImage_Methods[] = {
1076 { "width", limage_width },
1077 { "height", limage_height },
1078 { "__gc", limage_gc },
1082 ///////////////////////////////////////////////////////////////////////////////
1084 static int ltypeface_gc(lua_State* L) {
1085 SkSafeUnref(get_ref<SkTypeface>(L, 1));
1089 static const struct luaL_Reg gSkTypeface_Methods[] = {
1090 { "__gc", ltypeface_gc },
1094 ///////////////////////////////////////////////////////////////////////////////
1098 AutoCallLua(lua_State* L, const char func[], const char verb[]) : fL(L) {
1099 lua_getglobal(L, func);
1100 if (!lua_isfunction(L, -1)) {
1101 int t = lua_type(L, -1);
1102 SkDebugf("--- expected function %d\n", t);
1106 setfield_string(L, "verb", verb);
1110 if (lua_pcall(fL, 1, 0, 0) != LUA_OK) {
1111 SkDebugf("lua err: %s\n", lua_tostring(fL, -1));
1120 #define AUTO_LUA(verb) AutoCallLua acl(fL, fFunc.c_str(), verb)
1122 ///////////////////////////////////////////////////////////////////////////////
1124 static int lsk_newDocumentPDF(lua_State* L) {
1125 const char* file = NULL;
1126 if (lua_gettop(L) > 0 && lua_isstring(L, 1)) {
1127 file = lua_tolstring(L, 1, NULL);
1130 SkDocument* doc = SkDocument::CreatePDF(file);
1132 // do I need to push a nil on the stack and return 1?
1141 static int lsk_newPaint(lua_State* L) {
1142 push_new<SkPaint>(L);
1146 static int lsk_newPath(lua_State* L) {
1147 push_new<SkPath>(L);
1151 static int lsk_newRRect(lua_State* L) {
1152 SkRRect* rr = push_new<SkRRect>(L);
1157 static int lsk_newTypeface(lua_State* L) {
1158 const char* name = NULL;
1159 int style = SkTypeface::kNormal;
1161 int count = lua_gettop(L);
1162 if (count > 0 && lua_isstring(L, 1)) {
1163 name = lua_tolstring(L, 1, NULL);
1164 if (count > 1 && lua_isnumber(L, 2)) {
1165 style = lua_tointegerx(L, 2, NULL) & SkTypeface::kBoldItalic;
1169 SkTypeface* face = SkTypeface::CreateFromName(name,
1170 (SkTypeface::Style)style);
1171 // SkDebugf("---- name <%s> style=%d, face=%p ref=%d\n", name, style, face, face->getRefCnt());
1173 face = SkTypeface::RefDefault();
1180 static int lsk_loadImage(lua_State* L) {
1181 if (lua_gettop(L) > 0 && lua_isstring(L, 1)) {
1182 const char* name = lua_tolstring(L, 1, NULL);
1183 SkAutoDataUnref data(SkData::NewFromFileName(name));
1185 SkImage* image = SkImage::NewEncodedData(data.get());
1196 static void register_Sk(lua_State* L) {
1198 lua_pushvalue(L, -1);
1199 lua_setglobal(L, "Sk");
1200 // the Sk table is still on top
1202 setfield_function(L, "newDocumentPDF", lsk_newDocumentPDF);
1203 setfield_function(L, "loadImage", lsk_loadImage);
1204 setfield_function(L, "newPaint", lsk_newPaint);
1205 setfield_function(L, "newPath", lsk_newPath);
1206 setfield_function(L, "newRRect", lsk_newRRect);
1207 setfield_function(L, "newTypeface", lsk_newTypeface);
1208 lua_pop(L, 1); // pop off the Sk table
1211 #define REG_CLASS(L, C) \
1213 luaL_newmetatable(L, get_mtname<C>()); \
1214 lua_pushvalue(L, -1); \
1215 lua_setfield(L, -2, "__index"); \
1216 luaL_setfuncs(L, g##C##_Methods, 0); \
1217 lua_pop(L, 1); /* pop off the meta-table */ \
1220 void SkLua::Load(lua_State* L) {
1222 REG_CLASS(L, SkCanvas);
1223 REG_CLASS(L, SkDocument);
1224 REG_CLASS(L, SkImage);
1225 REG_CLASS(L, SkPath);
1226 REG_CLASS(L, SkPaint);
1227 REG_CLASS(L, SkRRect);
1228 REG_CLASS(L, SkShader);
1229 REG_CLASS(L, SkTypeface);
1230 REG_CLASS(L, SkMatrix);
1233 extern "C" int luaopen_skia(lua_State* L);
1234 extern "C" int luaopen_skia(lua_State* L) {