| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkLua.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrReducedClip.h" |
| #endif |
| |
| #include "SkBlurImageFilter.h" |
| #include "SkCanvas.h" |
| #include "SkColorFilter.h" |
| #include "SkData.h" |
| #include "SkDocument.h" |
| #include "SkGradientShader.h" |
| #include "SkImage.h" |
| #include "SkMatrix.h" |
| #include "SkPaint.h" |
| #include "SkPath.h" |
| #include "SkPictureRecorder.h" |
| #include "SkPixelRef.h" |
| #include "SkRRect.h" |
| #include "SkString.h" |
| #include "SkSurface.h" |
| #include "SkTextBlob.h" |
| #include "SkTypeface.h" |
| #include "SkXfermode.h" |
| |
| extern "C" { |
| #include "lua.h" |
| #include "lualib.h" |
| #include "lauxlib.h" |
| } |
| |
| // return the metatable name for a given class |
| template <typename T> const char* get_mtname(); |
| #define DEF_MTNAME(T) \ |
| template <> const char* get_mtname<T>() { \ |
| return #T "_LuaMetaTableName"; \ |
| } |
| |
| DEF_MTNAME(SkCanvas) |
| DEF_MTNAME(SkColorFilter) |
| DEF_MTNAME(SkDocument) |
| DEF_MTNAME(SkImage) |
| DEF_MTNAME(SkImageFilter) |
| DEF_MTNAME(SkMatrix) |
| DEF_MTNAME(SkRRect) |
| DEF_MTNAME(SkPath) |
| DEF_MTNAME(SkPaint) |
| DEF_MTNAME(SkPathEffect) |
| DEF_MTNAME(SkPicture) |
| DEF_MTNAME(SkPictureRecorder) |
| DEF_MTNAME(SkShader) |
| DEF_MTNAME(SkSurface) |
| DEF_MTNAME(SkTextBlob) |
| DEF_MTNAME(SkTypeface) |
| DEF_MTNAME(SkXfermode) |
| |
| template <typename T> T* push_new(lua_State* L) { |
| T* addr = (T*)lua_newuserdata(L, sizeof(T)); |
| new (addr) T; |
| luaL_getmetatable(L, get_mtname<T>()); |
| lua_setmetatable(L, -2); |
| return addr; |
| } |
| |
| template <typename T> void push_obj(lua_State* L, const T& obj) { |
| new (lua_newuserdata(L, sizeof(T))) T(obj); |
| luaL_getmetatable(L, get_mtname<T>()); |
| lua_setmetatable(L, -2); |
| } |
| |
| template <typename T> T* push_ref(lua_State* L, T* ref) { |
| *(T**)lua_newuserdata(L, sizeof(T*)) = SkSafeRef(ref); |
| luaL_getmetatable(L, get_mtname<T>()); |
| lua_setmetatable(L, -2); |
| return ref; |
| } |
| |
| template <typename T> void push_ref(lua_State* L, sk_sp<T> sp) { |
| *(T**)lua_newuserdata(L, sizeof(T*)) = sp.release(); |
| luaL_getmetatable(L, get_mtname<T>()); |
| lua_setmetatable(L, -2); |
| } |
| |
| template <typename T> T* get_ref(lua_State* L, int index) { |
| return *(T**)luaL_checkudata(L, index, get_mtname<T>()); |
| } |
| |
| template <typename T> T* get_obj(lua_State* L, int index) { |
| return (T*)luaL_checkudata(L, index, get_mtname<T>()); |
| } |
| |
| static bool lua2bool(lua_State* L, int index) { |
| return !!lua_toboolean(L, index); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkLua::SkLua(const char termCode[]) : fTermCode(termCode), fWeOwnL(true) { |
| fL = luaL_newstate(); |
| luaL_openlibs(fL); |
| SkLua::Load(fL); |
| } |
| |
| SkLua::SkLua(lua_State* L) : fL(L), fWeOwnL(false) {} |
| |
| SkLua::~SkLua() { |
| if (fWeOwnL) { |
| if (fTermCode.size() > 0) { |
| lua_getglobal(fL, fTermCode.c_str()); |
| if (lua_pcall(fL, 0, 0, 0) != LUA_OK) { |
| SkDebugf("lua err: %s\n", lua_tostring(fL, -1)); |
| } |
| } |
| lua_close(fL); |
| } |
| } |
| |
| bool SkLua::runCode(const char code[]) { |
| int err = luaL_loadstring(fL, code) || lua_pcall(fL, 0, 0, 0); |
| if (err) { |
| SkDebugf("--- lua failed: %s\n", lua_tostring(fL, -1)); |
| return false; |
| } |
| return true; |
| } |
| |
| bool SkLua::runCode(const void* code, size_t size) { |
| SkString str((const char*)code, size); |
| return this->runCode(str.c_str()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #define CHECK_SETFIELD(key) do if (key) lua_setfield(fL, -2, key); while (0) |
| |
| static void setfield_bool_if(lua_State* L, const char key[], bool pred) { |
| if (pred) { |
| lua_pushboolean(L, true); |
| lua_setfield(L, -2, key); |
| } |
| } |
| |
| static void setfield_string(lua_State* L, const char key[], const char value[]) { |
| lua_pushstring(L, value); |
| lua_setfield(L, -2, key); |
| } |
| |
| static void setfield_number(lua_State* L, const char key[], double value) { |
| lua_pushnumber(L, value); |
| lua_setfield(L, -2, key); |
| } |
| |
| static void setfield_boolean(lua_State* L, const char key[], bool value) { |
| lua_pushboolean(L, value); |
| lua_setfield(L, -2, key); |
| } |
| |
| static void setfield_scalar(lua_State* L, const char key[], SkScalar value) { |
| setfield_number(L, key, SkScalarToLua(value)); |
| } |
| |
| static void setfield_function(lua_State* L, |
| const char key[], lua_CFunction value) { |
| lua_pushcfunction(L, value); |
| lua_setfield(L, -2, key); |
| } |
| |
| static int lua2int_def(lua_State* L, int index, int defaultValue) { |
| if (lua_isnumber(L, index)) { |
| return (int)lua_tonumber(L, index); |
| } else { |
| return defaultValue; |
| } |
| } |
| |
| static SkScalar lua2scalar(lua_State* L, int index) { |
| SkASSERT(lua_isnumber(L, index)); |
| return SkLuaToScalar(lua_tonumber(L, index)); |
| } |
| |
| static SkScalar lua2scalar_def(lua_State* L, int index, SkScalar defaultValue) { |
| if (lua_isnumber(L, index)) { |
| return SkLuaToScalar(lua_tonumber(L, index)); |
| } else { |
| return defaultValue; |
| } |
| } |
| |
| static SkScalar getarray_scalar(lua_State* L, int stackIndex, int arrayIndex) { |
| SkASSERT(lua_istable(L, stackIndex)); |
| lua_rawgeti(L, stackIndex, arrayIndex); |
| |
| SkScalar value = lua2scalar(L, -1); |
| lua_pop(L, 1); |
| return value; |
| } |
| |
| static void getarray_scalars(lua_State* L, int stackIndex, SkScalar dst[], int count) { |
| for (int i = 0; i < count; ++i) { |
| dst[i] = getarray_scalar(L, stackIndex, i + 1); |
| } |
| } |
| |
| static void getarray_points(lua_State* L, int stackIndex, SkPoint pts[], int count) { |
| getarray_scalars(L, stackIndex, &pts[0].fX, count * 2); |
| } |
| |
| static void setarray_number(lua_State* L, int index, double value) { |
| lua_pushnumber(L, value); |
| lua_rawseti(L, -2, index); |
| } |
| |
| static void setarray_scalar(lua_State* L, int index, SkScalar value) { |
| setarray_number(L, index, SkScalarToLua(value)); |
| } |
| |
| void SkLua::pushBool(bool value, const char key[]) { |
| lua_pushboolean(fL, value); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushString(const char str[], const char key[]) { |
| lua_pushstring(fL, str); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushString(const char str[], size_t length, const char key[]) { |
| // TODO: how to do this w/o making a copy? |
| SkString s(str, length); |
| lua_pushstring(fL, s.c_str()); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushString(const SkString& str, const char key[]) { |
| lua_pushstring(fL, str.c_str()); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushColor(SkColor color, const char key[]) { |
| lua_newtable(fL); |
| setfield_number(fL, "a", SkColorGetA(color) / 255.0); |
| setfield_number(fL, "r", SkColorGetR(color) / 255.0); |
| setfield_number(fL, "g", SkColorGetG(color) / 255.0); |
| setfield_number(fL, "b", SkColorGetB(color) / 255.0); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushU32(uint32_t value, const char key[]) { |
| lua_pushnumber(fL, (double)value); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushScalar(SkScalar value, const char key[]) { |
| lua_pushnumber(fL, SkScalarToLua(value)); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushArrayU16(const uint16_t array[], int count, const char key[]) { |
| lua_newtable(fL); |
| for (int i = 0; i < count; ++i) { |
| // make it base-1 to match lua convention |
| setarray_number(fL, i + 1, (double)array[i]); |
| } |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushArrayPoint(const SkPoint array[], int count, const char key[]) { |
| lua_newtable(fL); |
| for (int i = 0; i < count; ++i) { |
| // make it base-1 to match lua convention |
| lua_newtable(fL); |
| this->pushScalar(array[i].fX, "x"); |
| this->pushScalar(array[i].fY, "y"); |
| lua_rawseti(fL, -2, i + 1); |
| } |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushArrayScalar(const SkScalar array[], int count, const char key[]) { |
| lua_newtable(fL); |
| for (int i = 0; i < count; ++i) { |
| // make it base-1 to match lua convention |
| setarray_scalar(fL, i + 1, array[i]); |
| } |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushRect(const SkRect& r, const char key[]) { |
| lua_newtable(fL); |
| setfield_scalar(fL, "left", r.fLeft); |
| setfield_scalar(fL, "top", r.fTop); |
| setfield_scalar(fL, "right", r.fRight); |
| setfield_scalar(fL, "bottom", r.fBottom); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushRRect(const SkRRect& rr, const char key[]) { |
| push_obj(fL, rr); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushDash(const SkPathEffect::DashInfo& info, const char key[]) { |
| lua_newtable(fL); |
| setfield_scalar(fL, "phase", info.fPhase); |
| this->pushArrayScalar(info.fIntervals, info.fCount, "intervals"); |
| CHECK_SETFIELD(key); |
| } |
| |
| |
| void SkLua::pushMatrix(const SkMatrix& matrix, const char key[]) { |
| push_obj(fL, matrix); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushPaint(const SkPaint& paint, const char key[]) { |
| push_obj(fL, paint); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushPath(const SkPath& path, const char key[]) { |
| push_obj(fL, path); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushCanvas(SkCanvas* canvas, const char key[]) { |
| push_ref(fL, canvas); |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushTextBlob(const SkTextBlob* blob, const char key[]) { |
| push_ref(fL, const_cast<SkTextBlob*>(blob)); |
| CHECK_SETFIELD(key); |
| } |
| |
| static const char* element_type(SkClipStack::Element::Type type) { |
| switch (type) { |
| case SkClipStack::Element::kEmpty_Type: |
| return "empty"; |
| case SkClipStack::Element::kRect_Type: |
| return "rect"; |
| case SkClipStack::Element::kRRect_Type: |
| return "rrect"; |
| case SkClipStack::Element::kPath_Type: |
| return "path"; |
| } |
| return "unknown"; |
| } |
| |
| static const char* region_op(SkRegion::Op op) { |
| switch (op) { |
| case SkRegion::kDifference_Op: |
| return "difference"; |
| case SkRegion::kIntersect_Op: |
| return "intersect"; |
| case SkRegion::kUnion_Op: |
| return "union"; |
| case SkRegion::kXOR_Op: |
| return "xor"; |
| case SkRegion::kReverseDifference_Op: |
| return "reverse-difference"; |
| case SkRegion::kReplace_Op: |
| return "replace"; |
| } |
| return "unknown"; |
| } |
| |
| void SkLua::pushClipStack(const SkClipStack& stack, const char* key) { |
| lua_newtable(fL); |
| SkClipStack::B2TIter iter(stack); |
| const SkClipStack::Element* element; |
| int i = 0; |
| while ((element = iter.next())) { |
| this->pushClipStackElement(*element); |
| lua_rawseti(fL, -2, ++i); |
| } |
| CHECK_SETFIELD(key); |
| } |
| |
| void SkLua::pushClipStackElement(const SkClipStack::Element& element, const char* key) { |
| lua_newtable(fL); |
| SkClipStack::Element::Type type = element.getType(); |
| this->pushString(element_type(type), "type"); |
| switch (type) { |
| case SkClipStack::Element::kEmpty_Type: |
| break; |
| case SkClipStack::Element::kRect_Type: |
| this->pushRect(element.getRect(), "rect"); |
| break; |
| case SkClipStack::Element::kRRect_Type: |
| this->pushRRect(element.getRRect(), "rrect"); |
| break; |
| case SkClipStack::Element::kPath_Type: |
| this->pushPath(element.getPath(), "path"); |
| break; |
| } |
| this->pushString(region_op(element.getOp()), "op"); |
| this->pushBool(element.isAA(), "aa"); |
| CHECK_SETFIELD(key); |
| } |
| |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static SkScalar getfield_scalar(lua_State* L, int index, const char key[]) { |
| SkASSERT(lua_istable(L, index)); |
| lua_pushstring(L, key); |
| lua_gettable(L, index); |
| |
| SkScalar value = lua2scalar(L, -1); |
| lua_pop(L, 1); |
| return value; |
| } |
| |
| static SkScalar getfield_scalar_default(lua_State* L, int index, const char key[], SkScalar def) { |
| SkASSERT(lua_istable(L, index)); |
| lua_pushstring(L, key); |
| lua_gettable(L, index); |
| |
| SkScalar value; |
| if (lua_isnil(L, -1)) { |
| value = def; |
| } else { |
| value = lua2scalar(L, -1); |
| } |
| lua_pop(L, 1); |
| return value; |
| } |
| |
| static SkScalar byte2unit(U8CPU byte) { |
| return byte / 255.0f; |
| } |
| |
| static U8CPU unit2byte(SkScalar x) { |
| if (x <= 0) { |
| return 0; |
| } else if (x >= 1) { |
| return 255; |
| } else { |
| return SkScalarRoundToInt(x * 255); |
| } |
| } |
| |
| static SkColor lua2color(lua_State* L, int index) { |
| return SkColorSetARGB(unit2byte(getfield_scalar_default(L, index, "a", 1)), |
| unit2byte(getfield_scalar_default(L, index, "r", 0)), |
| unit2byte(getfield_scalar_default(L, index, "g", 0)), |
| unit2byte(getfield_scalar_default(L, index, "b", 0))); |
| } |
| |
| static SkRect* lua2rect(lua_State* L, int index, SkRect* rect) { |
| rect->set(getfield_scalar_default(L, index, "left", 0), |
| getfield_scalar_default(L, index, "top", 0), |
| getfield_scalar(L, index, "right"), |
| getfield_scalar(L, index, "bottom")); |
| return rect; |
| } |
| |
| static int lcanvas_clear(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->clear(0); |
| return 0; |
| } |
| |
| static int lcanvas_drawColor(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->drawColor(lua2color(L, 2)); |
| return 0; |
| } |
| |
| static int lcanvas_drawPaint(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->drawPaint(*get_obj<SkPaint>(L, 2)); |
| return 0; |
| } |
| |
| static int lcanvas_drawRect(lua_State* L) { |
| SkRect rect; |
| lua2rect(L, 2, &rect); |
| const SkPaint* paint = get_obj<SkPaint>(L, 3); |
| get_ref<SkCanvas>(L, 1)->drawRect(rect, *paint); |
| return 0; |
| } |
| |
| static int lcanvas_drawOval(lua_State* L) { |
| SkRect rect; |
| get_ref<SkCanvas>(L, 1)->drawOval(*lua2rect(L, 2, &rect), |
| *get_obj<SkPaint>(L, 3)); |
| return 0; |
| } |
| |
| static int lcanvas_drawCircle(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->drawCircle(lua2scalar(L, 2), |
| lua2scalar(L, 3), |
| lua2scalar(L, 4), |
| *get_obj<SkPaint>(L, 5)); |
| return 0; |
| } |
| |
| static SkPaint* lua2OptionalPaint(lua_State* L, int index, SkPaint* paint) { |
| if (lua_isnumber(L, index)) { |
| paint->setAlpha(SkScalarRoundToInt(lua2scalar(L, index) * 255)); |
| return paint; |
| } else if (lua_isuserdata(L, index)) { |
| const SkPaint* ptr = get_obj<SkPaint>(L, index); |
| if (ptr) { |
| *paint = *ptr; |
| return paint; |
| } |
| } |
| return nullptr; |
| } |
| |
| static int lcanvas_drawImage(lua_State* L) { |
| SkCanvas* canvas = get_ref<SkCanvas>(L, 1); |
| SkImage* image = get_ref<SkImage>(L, 2); |
| if (nullptr == image) { |
| return 0; |
| } |
| SkScalar x = lua2scalar(L, 3); |
| SkScalar y = lua2scalar(L, 4); |
| |
| SkPaint paint; |
| canvas->drawImage(image, x, y, lua2OptionalPaint(L, 5, &paint)); |
| return 0; |
| } |
| |
| static int lcanvas_drawImageRect(lua_State* L) { |
| SkCanvas* canvas = get_ref<SkCanvas>(L, 1); |
| SkImage* image = get_ref<SkImage>(L, 2); |
| if (nullptr == image) { |
| return 0; |
| } |
| |
| SkRect srcR, dstR; |
| SkRect* srcRPtr = nullptr; |
| if (!lua_isnil(L, 3)) { |
| srcRPtr = lua2rect(L, 3, &srcR); |
| } |
| lua2rect(L, 4, &dstR); |
| |
| SkPaint paint; |
| canvas->legacy_drawImageRect(image, srcRPtr, dstR, lua2OptionalPaint(L, 5, &paint)); |
| return 0; |
| } |
| |
| static int lcanvas_drawPatch(lua_State* L) { |
| SkPoint cubics[12]; |
| SkColor colorStorage[4]; |
| SkPoint texStorage[4]; |
| |
| const SkColor* colors = nullptr; |
| const SkPoint* texs = nullptr; |
| |
| getarray_points(L, 2, cubics, 12); |
| |
| colorStorage[0] = SK_ColorRED; |
| colorStorage[1] = SK_ColorGREEN; |
| colorStorage[2] = SK_ColorBLUE; |
| colorStorage[3] = SK_ColorGRAY; |
| |
| if (lua_isnil(L, 4)) { |
| colors = colorStorage; |
| } else { |
| getarray_points(L, 4, texStorage, 4); |
| texs = texStorage; |
| } |
| |
| get_ref<SkCanvas>(L, 1)->drawPatch(cubics, colors, texs, nullptr, *get_obj<SkPaint>(L, 5)); |
| return 0; |
| } |
| |
| static int lcanvas_drawPath(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->drawPath(*get_obj<SkPath>(L, 2), |
| *get_obj<SkPaint>(L, 3)); |
| return 0; |
| } |
| |
| // drawPicture(pic, x, y, paint) |
| static int lcanvas_drawPicture(lua_State* L) { |
| SkCanvas* canvas = get_ref<SkCanvas>(L, 1); |
| SkPicture* picture = get_ref<SkPicture>(L, 2); |
| SkScalar x = lua2scalar_def(L, 3, 0); |
| SkScalar y = lua2scalar_def(L, 4, 0); |
| SkMatrix matrix, *matrixPtr = nullptr; |
| if (x || y) { |
| matrix.setTranslate(x, y); |
| matrixPtr = &matrix; |
| } |
| SkPaint paint; |
| canvas->drawPicture(picture, matrixPtr, lua2OptionalPaint(L, 5, &paint)); |
| return 0; |
| } |
| |
| static int lcanvas_drawText(lua_State* L) { |
| if (lua_gettop(L) < 5) { |
| return 0; |
| } |
| |
| if (lua_isstring(L, 2) && lua_isnumber(L, 3) && lua_isnumber(L, 4)) { |
| size_t len; |
| const char* text = lua_tolstring(L, 2, &len); |
| get_ref<SkCanvas>(L, 1)->drawText(text, len, |
| lua2scalar(L, 3), lua2scalar(L, 4), |
| *get_obj<SkPaint>(L, 5)); |
| } |
| return 0; |
| } |
| |
| static int lcanvas_drawTextBlob(lua_State* L) { |
| const SkTextBlob* blob = get_ref<SkTextBlob>(L, 2); |
| SkScalar x = lua2scalar(L, 3); |
| SkScalar y = lua2scalar(L, 4); |
| const SkPaint& paint = *get_obj<SkPaint>(L, 5); |
| get_ref<SkCanvas>(L, 1)->drawTextBlob(blob, x, y, paint); |
| return 0; |
| } |
| |
| static int lcanvas_getSaveCount(lua_State* L) { |
| lua_pushnumber(L, get_ref<SkCanvas>(L, 1)->getSaveCount()); |
| return 1; |
| } |
| |
| static int lcanvas_getTotalMatrix(lua_State* L) { |
| SkLua(L).pushMatrix(get_ref<SkCanvas>(L, 1)->getTotalMatrix()); |
| return 1; |
| } |
| |
| static int lcanvas_getClipStack(lua_State* L) { |
| SkLua(L).pushClipStack(*get_ref<SkCanvas>(L, 1)->getClipStack()); |
| return 1; |
| } |
| |
| int SkLua::lcanvas_getReducedClipStack(lua_State* L) { |
| #if SK_SUPPORT_GPU |
| const SkCanvas* canvas = get_ref<SkCanvas>(L, 1); |
| SkIRect queryBounds = canvas->getTopLayerBounds(); |
| |
| GrReducedClip::ElementList elements; |
| GrReducedClip::InitialState initialState; |
| int32_t genID; |
| SkIRect resultBounds; |
| |
| const SkClipStack& stack = *canvas->getClipStack(); |
| |
| GrReducedClip::ReduceClipStack(stack, |
| queryBounds, |
| &elements, |
| &genID, |
| &initialState, |
| &resultBounds, |
| nullptr); |
| |
| GrReducedClip::ElementList::Iter iter(elements); |
| int i = 0; |
| lua_newtable(L); |
| while(iter.get()) { |
| SkLua(L).pushClipStackElement(*iter.get()); |
| iter.next(); |
| lua_rawseti(L, -2, ++i); |
| } |
| // Currently this only returns the element list to lua, not the initial state or result bounds. |
| // It could return these as additional items on the lua stack. |
| return 1; |
| #else |
| return 0; |
| #endif |
| } |
| |
| static int lcanvas_save(lua_State* L) { |
| lua_pushinteger(L, get_ref<SkCanvas>(L, 1)->save()); |
| return 1; |
| } |
| |
| static int lcanvas_saveLayer(lua_State* L) { |
| SkPaint paint; |
| lua_pushinteger(L, get_ref<SkCanvas>(L, 1)->saveLayer(nullptr, lua2OptionalPaint(L, 2, &paint))); |
| return 1; |
| } |
| |
| static int lcanvas_restore(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->restore(); |
| return 0; |
| } |
| |
| static int lcanvas_scale(lua_State* L) { |
| SkScalar sx = lua2scalar_def(L, 2, 1); |
| SkScalar sy = lua2scalar_def(L, 3, sx); |
| get_ref<SkCanvas>(L, 1)->scale(sx, sy); |
| return 0; |
| } |
| |
| static int lcanvas_translate(lua_State* L) { |
| SkScalar tx = lua2scalar_def(L, 2, 0); |
| SkScalar ty = lua2scalar_def(L, 3, 0); |
| get_ref<SkCanvas>(L, 1)->translate(tx, ty); |
| return 0; |
| } |
| |
| static int lcanvas_rotate(lua_State* L) { |
| SkScalar degrees = lua2scalar_def(L, 2, 0); |
| get_ref<SkCanvas>(L, 1)->rotate(degrees); |
| return 0; |
| } |
| |
| static int lcanvas_concat(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->concat(*get_obj<SkMatrix>(L, 2)); |
| return 0; |
| } |
| |
| static int lcanvas_newSurface(lua_State* L) { |
| int width = lua2int_def(L, 2, 0); |
| int height = lua2int_def(L, 3, 0); |
| SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); |
| SkSurface* surface = get_ref<SkCanvas>(L, 1)->newSurface(info); |
| if (nullptr == surface) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, surface)->unref(); |
| } |
| return 1; |
| } |
| |
| static int lcanvas_gc(lua_State* L) { |
| get_ref<SkCanvas>(L, 1)->unref(); |
| return 0; |
| } |
| |
| const struct luaL_Reg gSkCanvas_Methods[] = { |
| { "clear", lcanvas_clear }, |
| { "drawColor", lcanvas_drawColor }, |
| { "drawPaint", lcanvas_drawPaint }, |
| { "drawRect", lcanvas_drawRect }, |
| { "drawOval", lcanvas_drawOval }, |
| { "drawCircle", lcanvas_drawCircle }, |
| { "drawImage", lcanvas_drawImage }, |
| { "drawImageRect", lcanvas_drawImageRect }, |
| { "drawPatch", lcanvas_drawPatch }, |
| { "drawPath", lcanvas_drawPath }, |
| { "drawPicture", lcanvas_drawPicture }, |
| { "drawText", lcanvas_drawText }, |
| { "drawTextBlob", lcanvas_drawTextBlob }, |
| { "getSaveCount", lcanvas_getSaveCount }, |
| { "getTotalMatrix", lcanvas_getTotalMatrix }, |
| { "getClipStack", lcanvas_getClipStack }, |
| #if SK_SUPPORT_GPU |
| { "getReducedClipStack", SkLua::lcanvas_getReducedClipStack }, |
| #endif |
| { "save", lcanvas_save }, |
| { "saveLayer", lcanvas_saveLayer }, |
| { "restore", lcanvas_restore }, |
| { "scale", lcanvas_scale }, |
| { "translate", lcanvas_translate }, |
| { "rotate", lcanvas_rotate }, |
| { "concat", lcanvas_concat }, |
| |
| { "newSurface", lcanvas_newSurface }, |
| |
| { "__gc", lcanvas_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int ldocument_beginPage(lua_State* L) { |
| const SkRect* contentPtr = nullptr; |
| push_ref(L, get_ref<SkDocument>(L, 1)->beginPage(lua2scalar(L, 2), |
| lua2scalar(L, 3), |
| contentPtr)); |
| return 1; |
| } |
| |
| static int ldocument_endPage(lua_State* L) { |
| get_ref<SkDocument>(L, 1)->endPage(); |
| return 0; |
| } |
| |
| static int ldocument_close(lua_State* L) { |
| get_ref<SkDocument>(L, 1)->close(); |
| return 0; |
| } |
| |
| static int ldocument_gc(lua_State* L) { |
| get_ref<SkDocument>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkDocument_Methods[] = { |
| { "beginPage", ldocument_beginPage }, |
| { "endPage", ldocument_endPage }, |
| { "close", ldocument_close }, |
| { "__gc", ldocument_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpaint_isAntiAlias(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isAntiAlias()); |
| return 1; |
| } |
| |
| static int lpaint_setAntiAlias(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setAntiAlias(lua2bool(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_isDither(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isDither()); |
| return 1; |
| } |
| |
| static int lpaint_setDither(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setDither(lua2bool(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_isUnderlineText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isUnderlineText()); |
| return 1; |
| } |
| |
| static int lpaint_isStrikeThruText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isStrikeThruText()); |
| return 1; |
| } |
| |
| static int lpaint_isFakeBoldText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isFakeBoldText()); |
| return 1; |
| } |
| |
| static int lpaint_isLinearText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isLinearText()); |
| return 1; |
| } |
| |
| static int lpaint_isSubpixelText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isSubpixelText()); |
| return 1; |
| } |
| |
| static int lpaint_setSubpixelText(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setSubpixelText(lua2bool(L, 2)); |
| return 1; |
| } |
| |
| static int lpaint_isDevKernText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isDevKernText()); |
| return 1; |
| } |
| |
| static int lpaint_isLCDRenderText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isLCDRenderText()); |
| return 1; |
| } |
| |
| static int lpaint_setLCDRenderText(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setLCDRenderText(lua2bool(L, 2)); |
| return 1; |
| } |
| |
| static int lpaint_isEmbeddedBitmapText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isEmbeddedBitmapText()); |
| return 1; |
| } |
| |
| static int lpaint_isAutohinted(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isAutohinted()); |
| return 1; |
| } |
| |
| static int lpaint_isVerticalText(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPaint>(L, 1)->isVerticalText()); |
| return 1; |
| } |
| |
| static int lpaint_getAlpha(lua_State* L) { |
| SkLua(L).pushScalar(byte2unit(get_obj<SkPaint>(L, 1)->getAlpha())); |
| return 1; |
| } |
| |
| static int lpaint_setAlpha(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setAlpha(unit2byte(lua2scalar(L, 2))); |
| return 0; |
| } |
| |
| static int lpaint_getColor(lua_State* L) { |
| SkLua(L).pushColor(get_obj<SkPaint>(L, 1)->getColor()); |
| return 1; |
| } |
| |
| static int lpaint_setColor(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setColor(lua2color(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getTextSize(lua_State* L) { |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextSize()); |
| return 1; |
| } |
| |
| static int lpaint_getTextScaleX(lua_State* L) { |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextScaleX()); |
| return 1; |
| } |
| |
| static int lpaint_getTextSkewX(lua_State* L) { |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getTextSkewX()); |
| return 1; |
| } |
| |
| static int lpaint_setTextSize(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setTextSize(lua2scalar(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getTypeface(lua_State* L) { |
| push_ref(L, get_obj<SkPaint>(L, 1)->getTypeface()); |
| return 1; |
| } |
| |
| static int lpaint_setTypeface(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setTypeface(get_ref<SkTypeface>(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getHinting(lua_State* L) { |
| SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getHinting()); |
| return 1; |
| } |
| |
| static int lpaint_getFilterQuality(lua_State* L) { |
| SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getFilterQuality()); |
| return 1; |
| } |
| |
| static int lpaint_setFilterQuality(lua_State* L) { |
| int level = lua2int_def(L, 2, -1); |
| if (level >= 0 && level <= 3) { |
| get_obj<SkPaint>(L, 1)->setFilterQuality((SkFilterQuality)level); |
| } |
| return 0; |
| } |
| |
| static int lpaint_getFontID(lua_State* L) { |
| SkTypeface* face = get_obj<SkPaint>(L, 1)->getTypeface(); |
| SkLua(L).pushU32(SkTypeface::UniqueID(face)); |
| return 1; |
| } |
| |
| static const struct { |
| const char* fLabel; |
| SkPaint::Align fAlign; |
| } gAlignRec[] = { |
| { "left", SkPaint::kLeft_Align }, |
| { "center", SkPaint::kCenter_Align }, |
| { "right", SkPaint::kRight_Align }, |
| }; |
| |
| static int lpaint_getTextAlign(lua_State* L) { |
| SkPaint::Align align = get_obj<SkPaint>(L, 1)->getTextAlign(); |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gAlignRec); ++i) { |
| if (gAlignRec[i].fAlign == align) { |
| lua_pushstring(L, gAlignRec[i].fLabel); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static int lpaint_setTextAlign(lua_State* L) { |
| if (lua_isstring(L, 2)) { |
| size_t len; |
| const char* label = lua_tolstring(L, 2, &len); |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gAlignRec); ++i) { |
| if (!strcmp(gAlignRec[i].fLabel, label)) { |
| get_obj<SkPaint>(L, 1)->setTextAlign(gAlignRec[i].fAlign); |
| break; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| static int lpaint_getStroke(lua_State* L) { |
| lua_pushboolean(L, SkPaint::kStroke_Style == get_obj<SkPaint>(L, 1)->getStyle()); |
| return 1; |
| } |
| |
| static int lpaint_setStroke(lua_State* L) { |
| SkPaint::Style style; |
| |
| if (lua_toboolean(L, 2)) { |
| style = SkPaint::kStroke_Style; |
| } else { |
| style = SkPaint::kFill_Style; |
| } |
| get_obj<SkPaint>(L, 1)->setStyle(style); |
| return 0; |
| } |
| |
| static int lpaint_getStrokeCap(lua_State* L) { |
| SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getStrokeCap()); |
| return 1; |
| } |
| |
| static int lpaint_getStrokeJoin(lua_State* L) { |
| SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getStrokeJoin()); |
| return 1; |
| } |
| |
| static int lpaint_getTextEncoding(lua_State* L) { |
| SkLua(L).pushU32(get_obj<SkPaint>(L, 1)->getTextEncoding()); |
| return 1; |
| } |
| |
| static int lpaint_getStrokeWidth(lua_State* L) { |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getStrokeWidth()); |
| return 1; |
| } |
| |
| static int lpaint_setStrokeWidth(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->setStrokeWidth(lua2scalar(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getStrokeMiter(lua_State* L) { |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->getStrokeMiter()); |
| return 1; |
| } |
| |
| static int lpaint_measureText(lua_State* L) { |
| if (lua_isstring(L, 2)) { |
| size_t len; |
| const char* text = lua_tolstring(L, 2, &len); |
| SkLua(L).pushScalar(get_obj<SkPaint>(L, 1)->measureText(text, len)); |
| return 1; |
| } |
| return 0; |
| } |
| |
| struct FontMetrics { |
| SkScalar fTop; //!< The greatest distance above the baseline for any glyph (will be <= 0) |
| SkScalar fAscent; //!< The recommended distance above the baseline (will be <= 0) |
| SkScalar fDescent; //!< The recommended distance below the baseline (will be >= 0) |
| SkScalar fBottom; //!< The greatest distance below the baseline for any glyph (will be >= 0) |
| SkScalar fLeading; //!< The recommended distance to add between lines of text (will be >= 0) |
| SkScalar fAvgCharWidth; //!< the average charactor width (>= 0) |
| SkScalar fXMin; //!< The minimum bounding box x value for all glyphs |
| SkScalar fXMax; //!< The maximum bounding box x value for all glyphs |
| SkScalar fXHeight; //!< the height of an 'x' in px, or 0 if no 'x' in face |
| }; |
| |
| static int lpaint_getFontMetrics(lua_State* L) { |
| SkPaint::FontMetrics fm; |
| SkScalar height = get_obj<SkPaint>(L, 1)->getFontMetrics(&fm); |
| |
| lua_newtable(L); |
| setfield_scalar(L, "top", fm.fTop); |
| setfield_scalar(L, "ascent", fm.fAscent); |
| setfield_scalar(L, "descent", fm.fDescent); |
| setfield_scalar(L, "bottom", fm.fBottom); |
| setfield_scalar(L, "leading", fm.fLeading); |
| SkLua(L).pushScalar(height); |
| return 2; |
| } |
| |
| static int lpaint_getEffects(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| |
| lua_newtable(L); |
| setfield_bool_if(L, "looper", !!paint->getLooper()); |
| setfield_bool_if(L, "pathEffect", !!paint->getPathEffect()); |
| setfield_bool_if(L, "rasterizer", !!paint->getRasterizer()); |
| setfield_bool_if(L, "maskFilter", !!paint->getMaskFilter()); |
| setfield_bool_if(L, "shader", !!paint->getShader()); |
| setfield_bool_if(L, "colorFilter", !!paint->getColorFilter()); |
| setfield_bool_if(L, "imageFilter", !!paint->getImageFilter()); |
| setfield_bool_if(L, "xfermode", !!paint->getXfermode()); |
| return 1; |
| } |
| |
| static int lpaint_getXfermode(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| SkXfermode* xfermode = paint->getXfermode(); |
| if (xfermode) { |
| push_ref(L, xfermode); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int lpaint_setXfermode(lua_State* L) { |
| SkPaint* paint = get_obj<SkPaint>(L, 1); |
| paint->setXfermode(get_ref<SkXfermode>(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getColorFilter(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| SkColorFilter* cf = paint->getColorFilter(); |
| if (cf) { |
| push_ref(L, cf); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int lpaint_setColorFilter(lua_State* L) { |
| SkPaint* paint = get_obj<SkPaint>(L, 1); |
| paint->setColorFilter(get_ref<SkColorFilter>(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getImageFilter(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| SkImageFilter* imf = paint->getImageFilter(); |
| if (imf) { |
| push_ref(L, imf); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int lpaint_setImageFilter(lua_State* L) { |
| SkPaint* paint = get_obj<SkPaint>(L, 1); |
| paint->setImageFilter(get_ref<SkImageFilter>(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getShader(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| SkShader* shader = paint->getShader(); |
| if (shader) { |
| push_ref(L, shader); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int lpaint_setShader(lua_State* L) { |
| SkPaint* paint = get_obj<SkPaint>(L, 1); |
| paint->setShader(get_ref<SkShader>(L, 2)); |
| return 0; |
| } |
| |
| static int lpaint_getPathEffect(lua_State* L) { |
| const SkPaint* paint = get_obj<SkPaint>(L, 1); |
| SkPathEffect* pe = paint->getPathEffect(); |
| if (pe) { |
| push_ref(L, pe); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static int lpaint_gc(lua_State* L) { |
| get_obj<SkPaint>(L, 1)->~SkPaint(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkPaint_Methods[] = { |
| { "isAntiAlias", lpaint_isAntiAlias }, |
| { "setAntiAlias", lpaint_setAntiAlias }, |
| { "isDither", lpaint_isDither }, |
| { "setDither", lpaint_setDither }, |
| { "getFilterQuality", lpaint_getFilterQuality }, |
| { "setFilterQuality", lpaint_setFilterQuality }, |
| { "isUnderlineText", lpaint_isUnderlineText }, |
| { "isStrikeThruText", lpaint_isStrikeThruText }, |
| { "isFakeBoldText", lpaint_isFakeBoldText }, |
| { "isLinearText", lpaint_isLinearText }, |
| { "isSubpixelText", lpaint_isSubpixelText }, |
| { "setSubpixelText", lpaint_setSubpixelText }, |
| { "isDevKernText", lpaint_isDevKernText }, |
| { "isLCDRenderText", lpaint_isLCDRenderText }, |
| { "setLCDRenderText", lpaint_setLCDRenderText }, |
| { "isEmbeddedBitmapText", lpaint_isEmbeddedBitmapText }, |
| { "isAutohinted", lpaint_isAutohinted }, |
| { "isVerticalText", lpaint_isVerticalText }, |
| { "getAlpha", lpaint_getAlpha }, |
| { "setAlpha", lpaint_setAlpha }, |
| { "getColor", lpaint_getColor }, |
| { "setColor", lpaint_setColor }, |
| { "getTextSize", lpaint_getTextSize }, |
| { "setTextSize", lpaint_setTextSize }, |
| { "getTextScaleX", lpaint_getTextScaleX }, |
| { "getTextSkewX", lpaint_getTextSkewX }, |
| { "getTypeface", lpaint_getTypeface }, |
| { "setTypeface", lpaint_setTypeface }, |
| { "getHinting", lpaint_getHinting }, |
| { "getFontID", lpaint_getFontID }, |
| { "getTextAlign", lpaint_getTextAlign }, |
| { "setTextAlign", lpaint_setTextAlign }, |
| { "getStroke", lpaint_getStroke }, |
| { "setStroke", lpaint_setStroke }, |
| { "getStrokeCap", lpaint_getStrokeCap }, |
| { "getStrokeJoin", lpaint_getStrokeJoin }, |
| { "getTextEncoding", lpaint_getTextEncoding }, |
| { "getStrokeWidth", lpaint_getStrokeWidth }, |
| { "setStrokeWidth", lpaint_setStrokeWidth }, |
| { "getStrokeMiter", lpaint_getStrokeMiter }, |
| { "measureText", lpaint_measureText }, |
| { "getFontMetrics", lpaint_getFontMetrics }, |
| { "getEffects", lpaint_getEffects }, |
| { "getColorFilter", lpaint_getColorFilter }, |
| { "setColorFilter", lpaint_setColorFilter }, |
| { "getImageFilter", lpaint_getImageFilter }, |
| { "setImageFilter", lpaint_setImageFilter }, |
| { "getXfermode", lpaint_getXfermode }, |
| { "setXfermode", lpaint_setXfermode }, |
| { "getShader", lpaint_getShader }, |
| { "setShader", lpaint_setShader }, |
| { "getPathEffect", lpaint_getPathEffect }, |
| { "__gc", lpaint_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const char* mode2string(SkShader::TileMode mode) { |
| static const char* gNames[] = { "clamp", "repeat", "mirror" }; |
| SkASSERT((unsigned)mode < SK_ARRAY_COUNT(gNames)); |
| return gNames[mode]; |
| } |
| |
| static const char* gradtype2string(SkShader::GradientType t) { |
| static const char* gNames[] = { |
| "none", "color", "linear", "radial", "radial2", "sweep", "conical" |
| }; |
| SkASSERT((unsigned)t < SK_ARRAY_COUNT(gNames)); |
| return gNames[t]; |
| } |
| |
| static int lshader_isOpaque(lua_State* L) { |
| SkShader* shader = get_ref<SkShader>(L, 1); |
| return shader && shader->isOpaque(); |
| } |
| |
| static int lshader_isABitmap(lua_State* L) { |
| SkShader* shader = get_ref<SkShader>(L, 1); |
| if (shader) { |
| SkBitmap bm; |
| SkMatrix matrix; |
| SkShader::TileMode modes[2]; |
| if (shader->isABitmap(&bm, &matrix, modes)) { |
| lua_newtable(L); |
| setfield_number(L, "genID", bm.pixelRef() ? bm.pixelRef()->getGenerationID() : 0); |
| setfield_number(L, "width", bm.width()); |
| setfield_number(L, "height", bm.height()); |
| setfield_string(L, "tileX", mode2string(modes[0])); |
| setfield_string(L, "tileY", mode2string(modes[1])); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static int lshader_asAGradient(lua_State* L) { |
| SkShader* shader = get_ref<SkShader>(L, 1); |
| if (shader) { |
| SkShader::GradientInfo info; |
| sk_bzero(&info, sizeof(info)); |
| |
| SkColor colors[3]; // hacked in for extracting info on 3 color case. |
| SkScalar pos[3]; |
| |
| info.fColorCount = 3; |
| info.fColors = &colors[0]; |
| info.fColorOffsets = &pos[0]; |
| |
| SkShader::GradientType t = shader->asAGradient(&info); |
| |
| if (SkShader::kNone_GradientType != t) { |
| lua_newtable(L); |
| setfield_string(L, "type", gradtype2string(t)); |
| setfield_number(L, "colorCount", info.fColorCount); |
| setfield_string(L, "tile", mode2string(info.fTileMode)); |
| |
| if (info.fColorCount == 3){ |
| setfield_number(L, "midPos", pos[1]); |
| } |
| |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static int lshader_gc(lua_State* L) { |
| get_ref<SkShader>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkShader_Methods[] = { |
| { "isOpaque", lshader_isOpaque }, |
| { "isABitmap", lshader_isABitmap }, |
| { "asAGradient", lshader_asAGradient }, |
| { "__gc", lshader_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpatheffect_asADash(lua_State* L) { |
| SkPathEffect* pe = get_ref<SkPathEffect>(L, 1); |
| if (pe) { |
| SkPathEffect::DashInfo info; |
| SkPathEffect::DashType dashType = pe->asADash(&info); |
| if (SkPathEffect::kDash_DashType == dashType) { |
| SkAutoTArray<SkScalar> intervals(info.fCount); |
| info.fIntervals = intervals.get(); |
| pe->asADash(&info); |
| SkLua(L).pushDash(info); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static int lpatheffect_gc(lua_State* L) { |
| get_ref<SkPathEffect>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkPathEffect_Methods[] = { |
| { "asADash", lpatheffect_asADash }, |
| { "__gc", lpatheffect_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpxfermode_getTypeName(lua_State* L) { |
| lua_pushstring(L, get_ref<SkXfermode>(L, 1)->getTypeName()); |
| return 1; |
| } |
| |
| static int lpxfermode_gc(lua_State* L) { |
| get_ref<SkXfermode>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkXfermode_Methods[] = { |
| { "getTypeName", lpxfermode_getTypeName }, |
| { "__gc", lpxfermode_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpcolorfilter_gc(lua_State* L) { |
| get_ref<SkColorFilter>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkColorFilter_Methods[] = { |
| { "__gc", lpcolorfilter_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpimagefilter_gc(lua_State* L) { |
| get_ref<SkImageFilter>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkImageFilter_Methods[] = { |
| { "__gc", lpimagefilter_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lmatrix_getType(lua_State* L) { |
| SkMatrix::TypeMask mask = get_obj<SkMatrix>(L, 1)->getType(); |
| |
| lua_newtable(L); |
| setfield_boolean(L, "translate", SkToBool(mask & SkMatrix::kTranslate_Mask)); |
| setfield_boolean(L, "scale", SkToBool(mask & SkMatrix::kScale_Mask)); |
| setfield_boolean(L, "affine", SkToBool(mask & SkMatrix::kAffine_Mask)); |
| setfield_boolean(L, "perspective", SkToBool(mask & SkMatrix::kPerspective_Mask)); |
| return 1; |
| } |
| |
| static int lmatrix_getScaleX(lua_State* L) { |
| lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getScaleX()); |
| return 1; |
| } |
| |
| static int lmatrix_getScaleY(lua_State* L) { |
| lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getScaleY()); |
| return 1; |
| } |
| |
| static int lmatrix_getTranslateX(lua_State* L) { |
| lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getTranslateX()); |
| return 1; |
| } |
| |
| static int lmatrix_getTranslateY(lua_State* L) { |
| lua_pushnumber(L, get_obj<SkMatrix>(L,1)->getTranslateY()); |
| return 1; |
| } |
| |
| static int lmatrix_invert(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkMatrix>(L, 1)->invert(get_obj<SkMatrix>(L, 2))); |
| return 1; |
| } |
| |
| static int lmatrix_mapXY(lua_State* L) { |
| SkPoint pt = { lua2scalar(L, 2), lua2scalar(L, 3) }; |
| get_obj<SkMatrix>(L, 1)->mapPoints(&pt, &pt, 1); |
| lua_pushnumber(L, pt.x()); |
| lua_pushnumber(L, pt.y()); |
| return 2; |
| } |
| |
| static int lmatrix_setRectToRect(lua_State* L) { |
| SkMatrix* matrix = get_obj<SkMatrix>(L, 1); |
| SkRect srcR, dstR; |
| lua2rect(L, 2, &srcR); |
| lua2rect(L, 3, &dstR); |
| const char* scaleToFitStr = lua_tostring(L, 4); |
| SkMatrix::ScaleToFit scaleToFit = SkMatrix::kFill_ScaleToFit; |
| |
| if (scaleToFitStr) { |
| const struct { |
| const char* fName; |
| SkMatrix::ScaleToFit fScaleToFit; |
| } rec[] = { |
| { "fill", SkMatrix::kFill_ScaleToFit }, |
| { "start", SkMatrix::kStart_ScaleToFit }, |
| { "center", SkMatrix::kCenter_ScaleToFit }, |
| { "end", SkMatrix::kEnd_ScaleToFit }, |
| }; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) { |
| if (strcmp(rec[i].fName, scaleToFitStr) == 0) { |
| scaleToFit = rec[i].fScaleToFit; |
| break; |
| } |
| } |
| } |
| |
| matrix->setRectToRect(srcR, dstR, scaleToFit); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkMatrix_Methods[] = { |
| { "getType", lmatrix_getType }, |
| { "getScaleX", lmatrix_getScaleX }, |
| { "getScaleY", lmatrix_getScaleY }, |
| { "getTranslateX", lmatrix_getTranslateX }, |
| { "getTranslateY", lmatrix_getTranslateY }, |
| { "setRectToRect", lmatrix_setRectToRect }, |
| { "invert", lmatrix_invert }, |
| { "mapXY", lmatrix_mapXY }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpath_getBounds(lua_State* L) { |
| SkLua(L).pushRect(get_obj<SkPath>(L, 1)->getBounds()); |
| return 1; |
| } |
| |
| static const char* fill_type_to_str(SkPath::FillType fill) { |
| switch (fill) { |
| case SkPath::kEvenOdd_FillType: |
| return "even-odd"; |
| case SkPath::kWinding_FillType: |
| return "winding"; |
| case SkPath::kInverseEvenOdd_FillType: |
| return "inverse-even-odd"; |
| case SkPath::kInverseWinding_FillType: |
| return "inverse-winding"; |
| } |
| return "unknown"; |
| } |
| |
| static int lpath_getFillType(lua_State* L) { |
| SkPath::FillType fill = get_obj<SkPath>(L, 1)->getFillType(); |
| SkLua(L).pushString(fill_type_to_str(fill)); |
| return 1; |
| } |
| |
| static SkString segment_masks_to_str(uint32_t segmentMasks) { |
| SkString result; |
| bool first = true; |
| if (SkPath::kLine_SegmentMask & segmentMasks) { |
| result.append("line"); |
| first = false; |
| SkDEBUGCODE(segmentMasks &= ~SkPath::kLine_SegmentMask;) |
| } |
| if (SkPath::kQuad_SegmentMask & segmentMasks) { |
| if (!first) { |
| result.append(" "); |
| } |
| result.append("quad"); |
| first = false; |
| SkDEBUGCODE(segmentMasks &= ~SkPath::kQuad_SegmentMask;) |
| } |
| if (SkPath::kConic_SegmentMask & segmentMasks) { |
| if (!first) { |
| result.append(" "); |
| } |
| result.append("conic"); |
| first = false; |
| SkDEBUGCODE(segmentMasks &= ~SkPath::kConic_SegmentMask;) |
| } |
| if (SkPath::kCubic_SegmentMask & segmentMasks) { |
| if (!first) { |
| result.append(" "); |
| } |
| result.append("cubic"); |
| SkDEBUGCODE(segmentMasks &= ~SkPath::kCubic_SegmentMask;) |
| } |
| SkASSERT(0 == segmentMasks); |
| return result; |
| } |
| |
| static int lpath_getSegmentTypes(lua_State* L) { |
| uint32_t segMasks = get_obj<SkPath>(L, 1)->getSegmentMasks(); |
| SkLua(L).pushString(segment_masks_to_str(segMasks)); |
| return 1; |
| } |
| |
| static int lpath_isConvex(lua_State* L) { |
| bool isConvex = SkPath::kConvex_Convexity == get_obj<SkPath>(L, 1)->getConvexity(); |
| SkLua(L).pushBool(isConvex); |
| return 1; |
| } |
| |
| static int lpath_isEmpty(lua_State* L) { |
| lua_pushboolean(L, get_obj<SkPath>(L, 1)->isEmpty()); |
| return 1; |
| } |
| |
| static int lpath_isRect(lua_State* L) { |
| SkRect r; |
| bool pred = get_obj<SkPath>(L, 1)->isRect(&r); |
| int ret_count = 1; |
| lua_pushboolean(L, pred); |
| if (pred) { |
| SkLua(L).pushRect(r); |
| ret_count += 1; |
| } |
| return ret_count; |
| } |
| |
| static const char* dir2string(SkPath::Direction dir) { |
| static const char* gStr[] = { |
| "unknown", "cw", "ccw" |
| }; |
| SkASSERT((unsigned)dir < SK_ARRAY_COUNT(gStr)); |
| return gStr[dir]; |
| } |
| |
| static int lpath_isNestedFillRects(lua_State* L) { |
| SkRect rects[2]; |
| SkPath::Direction dirs[2]; |
| bool pred = get_obj<SkPath>(L, 1)->isNestedFillRects(rects, dirs); |
| int ret_count = 1; |
| lua_pushboolean(L, pred); |
| if (pred) { |
| SkLua lua(L); |
| lua.pushRect(rects[0]); |
| lua.pushRect(rects[1]); |
| lua_pushstring(L, dir2string(dirs[0])); |
| lua_pushstring(L, dir2string(dirs[0])); |
| ret_count += 4; |
| } |
| return ret_count; |
| } |
| |
| static int lpath_countPoints(lua_State* L) { |
| lua_pushinteger(L, get_obj<SkPath>(L, 1)->countPoints()); |
| return 1; |
| } |
| |
| static int lpath_reset(lua_State* L) { |
| get_obj<SkPath>(L, 1)->reset(); |
| return 0; |
| } |
| |
| static int lpath_moveTo(lua_State* L) { |
| get_obj<SkPath>(L, 1)->moveTo(lua2scalar(L, 2), lua2scalar(L, 3)); |
| return 0; |
| } |
| |
| static int lpath_lineTo(lua_State* L) { |
| get_obj<SkPath>(L, 1)->lineTo(lua2scalar(L, 2), lua2scalar(L, 3)); |
| return 0; |
| } |
| |
| static int lpath_quadTo(lua_State* L) { |
| get_obj<SkPath>(L, 1)->quadTo(lua2scalar(L, 2), lua2scalar(L, 3), |
| lua2scalar(L, 4), lua2scalar(L, 5)); |
| return 0; |
| } |
| |
| static int lpath_cubicTo(lua_State* L) { |
| get_obj<SkPath>(L, 1)->cubicTo(lua2scalar(L, 2), lua2scalar(L, 3), |
| lua2scalar(L, 4), lua2scalar(L, 5), |
| lua2scalar(L, 6), lua2scalar(L, 7)); |
| return 0; |
| } |
| |
| static int lpath_close(lua_State* L) { |
| get_obj<SkPath>(L, 1)->close(); |
| return 0; |
| } |
| |
| static int lpath_gc(lua_State* L) { |
| get_obj<SkPath>(L, 1)->~SkPath(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkPath_Methods[] = { |
| { "getBounds", lpath_getBounds }, |
| { "getFillType", lpath_getFillType }, |
| { "getSegmentTypes", lpath_getSegmentTypes }, |
| { "isConvex", lpath_isConvex }, |
| { "isEmpty", lpath_isEmpty }, |
| { "isRect", lpath_isRect }, |
| { "isNestedFillRects", lpath_isNestedFillRects }, |
| { "countPoints", lpath_countPoints }, |
| { "reset", lpath_reset }, |
| { "moveTo", lpath_moveTo }, |
| { "lineTo", lpath_lineTo }, |
| { "quadTo", lpath_quadTo }, |
| { "cubicTo", lpath_cubicTo }, |
| { "close", lpath_close }, |
| { "__gc", lpath_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const char* rrect_type(const SkRRect& rr) { |
| switch (rr.getType()) { |
| case SkRRect::kEmpty_Type: return "empty"; |
| case SkRRect::kRect_Type: return "rect"; |
| case SkRRect::kOval_Type: return "oval"; |
| case SkRRect::kSimple_Type: return "simple"; |
| case SkRRect::kNinePatch_Type: return "nine-patch"; |
| case SkRRect::kComplex_Type: return "complex"; |
| } |
| SkDEBUGFAIL("never get here"); |
| return ""; |
| } |
| |
| static int lrrect_rect(lua_State* L) { |
| SkLua(L).pushRect(get_obj<SkRRect>(L, 1)->rect()); |
| return 1; |
| } |
| |
| static int lrrect_type(lua_State* L) { |
| lua_pushstring(L, rrect_type(*get_obj<SkRRect>(L, 1))); |
| return 1; |
| } |
| |
| static int lrrect_radii(lua_State* L) { |
| int corner = SkToInt(lua_tointeger(L, 2)); |
| SkVector v; |
| if (corner < 0 || corner > 3) { |
| SkDebugf("bad corner index %d", corner); |
| v.set(0, 0); |
| } else { |
| v = get_obj<SkRRect>(L, 1)->radii((SkRRect::Corner)corner); |
| } |
| lua_pushnumber(L, v.fX); |
| lua_pushnumber(L, v.fY); |
| return 2; |
| } |
| |
| static int lrrect_gc(lua_State* L) { |
| get_obj<SkRRect>(L, 1)->~SkRRect(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkRRect_Methods[] = { |
| { "rect", lrrect_rect }, |
| { "type", lrrect_type }, |
| { "radii", lrrect_radii }, |
| { "__gc", lrrect_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int limage_width(lua_State* L) { |
| lua_pushinteger(L, get_ref<SkImage>(L, 1)->width()); |
| return 1; |
| } |
| |
| static int limage_height(lua_State* L) { |
| lua_pushinteger(L, get_ref<SkImage>(L, 1)->height()); |
| return 1; |
| } |
| |
| static int limage_newShader(lua_State* L) { |
| SkShader::TileMode tmode = SkShader::kClamp_TileMode; |
| const SkMatrix* localM = nullptr; |
| push_ref(L, get_ref<SkImage>(L, 1)->makeShader(tmode, tmode, localM)); |
| return 1; |
| } |
| |
| static int limage_gc(lua_State* L) { |
| get_ref<SkImage>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkImage_Methods[] = { |
| { "width", limage_width }, |
| { "height", limage_height }, |
| { "newShader", limage_newShader }, |
| { "__gc", limage_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lsurface_width(lua_State* L) { |
| lua_pushinteger(L, get_ref<SkSurface>(L, 1)->width()); |
| return 1; |
| } |
| |
| static int lsurface_height(lua_State* L) { |
| lua_pushinteger(L, get_ref<SkSurface>(L, 1)->height()); |
| return 1; |
| } |
| |
| static int lsurface_getCanvas(lua_State* L) { |
| SkCanvas* canvas = get_ref<SkSurface>(L, 1)->getCanvas(); |
| if (nullptr == canvas) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, canvas); |
| // note: we don't unref canvas, since getCanvas did not ref it. |
| // warning: this is weird: now Lua owns a ref on this canvas, but what if they let |
| // the real owner (the surface) go away, but still hold onto the canvas? |
| // *really* we want to sort of ref the surface again, but have the native object |
| // know that it is supposed to be treated as a canvas... |
| } |
| return 1; |
| } |
| |
| static int lsurface_newImageSnapshot(lua_State* L) { |
| sk_sp<SkImage> image = get_ref<SkSurface>(L, 1)->makeImageSnapshot(); |
| if (!image) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, image); |
| } |
| return 1; |
| } |
| |
| static int lsurface_newSurface(lua_State* L) { |
| int width = lua2int_def(L, 2, 0); |
| int height = lua2int_def(L, 3, 0); |
| SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); |
| SkSurface* surface = get_ref<SkSurface>(L, 1)->newSurface(info); |
| if (nullptr == surface) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, surface)->unref(); |
| } |
| return 1; |
| } |
| |
| static int lsurface_gc(lua_State* L) { |
| get_ref<SkSurface>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkSurface_Methods[] = { |
| { "width", lsurface_width }, |
| { "height", lsurface_height }, |
| { "getCanvas", lsurface_getCanvas }, |
| { "newImageSnapshot", lsurface_newImageSnapshot }, |
| { "newSurface", lsurface_newSurface }, |
| { "__gc", lsurface_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpicturerecorder_beginRecording(lua_State* L) { |
| const SkScalar w = lua2scalar_def(L, 2, -1); |
| const SkScalar h = lua2scalar_def(L, 3, -1); |
| if (w <= 0 || h <= 0) { |
| lua_pushnil(L); |
| return 1; |
| } |
| |
| SkCanvas* canvas = get_obj<SkPictureRecorder>(L, 1)->beginRecording(w, h); |
| if (nullptr == canvas) { |
| lua_pushnil(L); |
| return 1; |
| } |
| |
| push_ref(L, canvas); |
| return 1; |
| } |
| |
| static int lpicturerecorder_getCanvas(lua_State* L) { |
| SkCanvas* canvas = get_obj<SkPictureRecorder>(L, 1)->getRecordingCanvas(); |
| if (nullptr == canvas) { |
| lua_pushnil(L); |
| return 1; |
| } |
| push_ref(L, canvas); |
| return 1; |
| } |
| |
| static int lpicturerecorder_endRecording(lua_State* L) { |
| SkPicture* pic = get_obj<SkPictureRecorder>(L, 1)->endRecording(); |
| if (nullptr == pic) { |
| lua_pushnil(L); |
| return 1; |
| } |
| push_ref(L, pic)->unref(); |
| return 1; |
| } |
| |
| static int lpicturerecorder_gc(lua_State* L) { |
| get_obj<SkPictureRecorder>(L, 1)->~SkPictureRecorder(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkPictureRecorder_Methods[] = { |
| { "beginRecording", lpicturerecorder_beginRecording }, |
| { "getCanvas", lpicturerecorder_getCanvas }, |
| { "endRecording", lpicturerecorder_endRecording }, |
| { "__gc", lpicturerecorder_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lpicture_width(lua_State* L) { |
| lua_pushnumber(L, get_ref<SkPicture>(L, 1)->cullRect().width()); |
| return 1; |
| } |
| |
| static int lpicture_height(lua_State* L) { |
| lua_pushnumber(L, get_ref<SkPicture>(L, 1)->cullRect().height()); |
| return 1; |
| } |
| |
| static int lpicture_gc(lua_State* L) { |
| get_ref<SkPicture>(L, 1)->unref(); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkPicture_Methods[] = { |
| { "width", lpicture_width }, |
| { "height", lpicture_height }, |
| { "__gc", lpicture_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int ltextblob_bounds(lua_State* L) { |
| SkLua(L).pushRect(get_ref<SkTextBlob>(L, 1)->bounds()); |
| return 1; |
| } |
| |
| static int ltextblob_gc(lua_State* L) { |
| SkSafeUnref(get_ref<SkTextBlob>(L, 1)); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkTextBlob_Methods[] = { |
| { "bounds", ltextblob_bounds }, |
| { "__gc", ltextblob_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int ltypeface_getFamilyName(lua_State* L) { |
| SkString str; |
| get_ref<SkTypeface>(L, 1)->getFamilyName(&str); |
| lua_pushstring(L, str.c_str()); |
| return 1; |
| } |
| |
| static int ltypeface_getStyle(lua_State* L) { |
| lua_pushnumber(L, (double)get_ref<SkTypeface>(L, 1)->style()); |
| return 1; |
| } |
| |
| static int ltypeface_gc(lua_State* L) { |
| SkSafeUnref(get_ref<SkTypeface>(L, 1)); |
| return 0; |
| } |
| |
| static const struct luaL_Reg gSkTypeface_Methods[] = { |
| { "getFamilyName", ltypeface_getFamilyName }, |
| { "getStyle", ltypeface_getStyle }, |
| { "__gc", ltypeface_gc }, |
| { nullptr, nullptr } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class AutoCallLua { |
| public: |
| AutoCallLua(lua_State* L, const char func[], const char verb[]) : fL(L) { |
| lua_getglobal(L, func); |
| if (!lua_isfunction(L, -1)) { |
| int t = lua_type(L, -1); |
| SkDebugf("--- expected function %d\n", t); |
| } |
| |
| lua_newtable(L); |
| setfield_string(L, "verb", verb); |
| } |
| |
| ~AutoCallLua() { |
| if (lua_pcall(fL, 1, 0, 0) != LUA_OK) { |
| SkDebugf("lua err: %s\n", lua_tostring(fL, -1)); |
| } |
| lua_settop(fL, -1); |
| } |
| |
| private: |
| lua_State* fL; |
| }; |
| |
| #define AUTO_LUA(verb) AutoCallLua acl(fL, fFunc.c_str(), verb) |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static int lsk_newDocumentPDF(lua_State* L) { |
| const char* file = nullptr; |
| if (lua_gettop(L) > 0 && lua_isstring(L, 1)) { |
| file = lua_tolstring(L, 1, nullptr); |
| } |
| |
| SkDocument* doc = SkDocument::CreatePDF(file); |
| if (nullptr == doc) { |
| // do I need to push a nil on the stack and return 1? |
| return 0; |
| } else { |
| push_ref(L, doc)->unref(); |
| return 1; |
| } |
| } |
| |
| static int lsk_newBlurImageFilter(lua_State* L) { |
| SkScalar sigmaX = lua2scalar_def(L, 1, 0); |
| SkScalar sigmaY = lua2scalar_def(L, 2, 0); |
| SkImageFilter* imf = SkBlurImageFilter::Create(sigmaX, sigmaY); |
| if (nullptr == imf) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, imf)->unref(); |
| } |
| return 1; |
| } |
| |
| static int lsk_newLinearGradient(lua_State* L) { |
| SkScalar x0 = lua2scalar_def(L, 1, 0); |
| SkScalar y0 = lua2scalar_def(L, 2, 0); |
| SkColor c0 = lua2color(L, 3); |
| SkScalar x1 = lua2scalar_def(L, 4, 0); |
| SkScalar y1 = lua2scalar_def(L, 5, 0); |
| SkColor c1 = lua2color(L, 6); |
| |
| SkPoint pts[] = { { x0, y0 }, { x1, y1 } }; |
| SkColor colors[] = { c0, c1 }; |
| auto s = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode); |
| if (!s) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, std::move(s)); |
| } |
| return 1; |
| } |
| |
| static int lsk_newMatrix(lua_State* L) { |
| push_new<SkMatrix>(L)->reset(); |
| return 1; |
| } |
| |
| static int lsk_newPaint(lua_State* L) { |
| push_new<SkPaint>(L); |
| return 1; |
| } |
| |
| static int lsk_newPath(lua_State* L) { |
| push_new<SkPath>(L); |
| return 1; |
| } |
| |
| static int lsk_newPictureRecorder(lua_State* L) { |
| push_new<SkPictureRecorder>(L); |
| return 1; |
| } |
| |
| static int lsk_newRRect(lua_State* L) { |
| push_new<SkRRect>(L)->setEmpty(); |
| return 1; |
| } |
| |
| #include "SkTextBox.h" |
| // Sk.newTextBlob(text, rect, paint) |
| static int lsk_newTextBlob(lua_State* L) { |
| const char* text = lua_tolstring(L, 1, nullptr); |
| SkRect bounds; |
| lua2rect(L, 2, &bounds); |
| const SkPaint& paint = *get_obj<SkPaint>(L, 3); |
| |
| SkTextBox box; |
| box.setMode(SkTextBox::kLineBreak_Mode); |
| box.setBox(bounds); |
| box.setText(text, strlen(text), paint); |
| |
| SkScalar newBottom; |
| SkAutoTUnref<SkTextBlob> blob(box.snapshotTextBlob(&newBottom)); |
| push_ref<SkTextBlob>(L, blob); |
| SkLua(L).pushScalar(newBottom); |
| return 2; |
| } |
| |
| static int lsk_newTypeface(lua_State* L) { |
| const char* name = nullptr; |
| int style = SkTypeface::kNormal; |
| |
| int count = lua_gettop(L); |
| if (count > 0 && lua_isstring(L, 1)) { |
| name = lua_tolstring(L, 1, nullptr); |
| if (count > 1 && lua_isnumber(L, 2)) { |
| style = lua_tointegerx(L, 2, nullptr) & SkTypeface::kBoldItalic; |
| } |
| } |
| |
| SkTypeface* face = SkTypeface::CreateFromName(name, |
| (SkTypeface::Style)style); |
| // SkDebugf("---- name <%s> style=%d, face=%p ref=%d\n", name, style, face, face->getRefCnt()); |
| if (nullptr == face) { |
| face = SkTypeface::RefDefault(); |
| } |
| push_ref(L, face)->unref(); |
| return 1; |
| } |
| |
| static int lsk_newRasterSurface(lua_State* L) { |
| int width = lua2int_def(L, 1, 0); |
| int height = lua2int_def(L, 2, 0); |
| SkImageInfo info = SkImageInfo::MakeN32Premul(width, height); |
| SkSurfaceProps props(0, kUnknown_SkPixelGeometry); |
| SkSurface* surface = SkSurface::NewRaster(info, &props); |
| if (nullptr == surface) { |
| lua_pushnil(L); |
| } else { |
| push_ref(L, surface)->unref(); |
| } |
| return 1; |
| } |
| |
| static int lsk_loadImage(lua_State* L) { |
| if (lua_gettop(L) > 0 && lua_isstring(L, 1)) { |
| const char* name = lua_tolstring(L, 1, nullptr); |
| sk_sp<SkData> data(SkData::MakeFromFileName(name)); |
| if (data) { |
| auto image = SkImage::MakeFromEncoded(std::move(data)); |
| if (image) { |
| push_ref(L, std::move(image)); |
| return 1; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| static void register_Sk(lua_State* L) { |
| lua_newtable(L); |
| lua_pushvalue(L, -1); |
| lua_setglobal(L, "Sk"); |
| // the Sk table is still on top |
| |
| setfield_function(L, "newDocumentPDF", lsk_newDocumentPDF); |
| setfield_function(L, "loadImage", lsk_loadImage); |
| setfield_function(L, "newBlurImageFilter", lsk_newBlurImageFilter); |
| setfield_function(L, "newLinearGradient", lsk_newLinearGradient); |
| setfield_function(L, "newMatrix", lsk_newMatrix); |
| setfield_function(L, "newPaint", lsk_newPaint); |
| setfield_function(L, "newPath", lsk_newPath); |
| setfield_function(L, "newPictureRecorder", lsk_newPictureRecorder); |
| setfield_function(L, "newRRect", lsk_newRRect); |
| setfield_function(L, "newRasterSurface", lsk_newRasterSurface); |
| setfield_function(L, "newTextBlob", lsk_newTextBlob); |
| setfield_function(L, "newTypeface", lsk_newTypeface); |
| lua_pop(L, 1); // pop off the Sk table |
| } |
| |
| #define REG_CLASS(L, C) \ |
| do { \ |
| luaL_newmetatable(L, get_mtname<C>()); \ |
| lua_pushvalue(L, -1); \ |
| lua_setfield(L, -2, "__index"); \ |
| luaL_setfuncs(L, g##C##_Methods, 0); \ |
| lua_pop(L, 1); /* pop off the meta-table */ \ |
| } while (0) |
| |
| void SkLua::Load(lua_State* L) { |
| register_Sk(L); |
| REG_CLASS(L, SkCanvas); |
| REG_CLASS(L, SkColorFilter); |
| REG_CLASS(L, SkDocument); |
| REG_CLASS(L, SkImage); |
| REG_CLASS(L, SkImageFilter); |
| REG_CLASS(L, SkMatrix); |
| REG_CLASS(L, SkPaint); |
| REG_CLASS(L, SkPath); |
| REG_CLASS(L, SkPathEffect); |
| REG_CLASS(L, SkPicture); |
| REG_CLASS(L, SkPictureRecorder); |
| REG_CLASS(L, SkRRect); |
| REG_CLASS(L, SkShader); |
| REG_CLASS(L, SkSurface); |
| REG_CLASS(L, SkTextBlob); |
| REG_CLASS(L, SkTypeface); |
| REG_CLASS(L, SkXfermode); |
| } |
| |
| extern "C" int luaopen_skia(lua_State* L); |
| extern "C" int luaopen_skia(lua_State* L) { |
| SkLua::Load(L); |
| return 0; |
| } |