102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
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// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
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#include "CanvasPattern.h"
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#include "Canvas.h"
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#include "Image.h"
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using namespace v8;
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const cairo_user_data_key_t *pattern_repeat_key;
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Nan::Persistent<FunctionTemplate> Pattern::constructor;
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/*
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* Initialize CanvasPattern.
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*/
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void
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Pattern::Initialize(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE target) {
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Nan::HandleScope scope;
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// Constructor
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Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(Pattern::New);
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constructor.Reset(ctor);
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(Nan::New("CanvasPattern").ToLocalChecked());
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(Nan::New("CanvasPattern").ToLocalChecked());
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// Prototype
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Local<Context> ctx = Nan::GetCurrentContext();
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Nan::Set(target,
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Nan::New("CanvasPattern").ToLocalChecked(),
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ctor->GetFunction(ctx).ToLocalChecked());
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}
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/*
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* Initialize a new CanvasPattern.
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*/
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NAN_METHOD(Pattern::New) {
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if (!info.IsConstructCall()) {
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return Nan::ThrowTypeError("Class constructors cannot be invoked without 'new'");
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}
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cairo_surface_t *surface;
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Local<Object> obj = Nan::To<Object>(info[0]).ToLocalChecked();
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// Image
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if (Nan::New(Image::constructor)->HasInstance(obj)) {
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Image *img = Nan::ObjectWrap::Unwrap<Image>(obj);
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if (!img->isComplete()) {
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return Nan::ThrowError("Image given has not completed loading");
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}
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surface = img->surface();
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// Canvas
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} else if (Nan::New(Canvas::constructor)->HasInstance(obj)) {
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Canvas *canvas = Nan::ObjectWrap::Unwrap<Canvas>(obj);
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surface = canvas->surface();
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// Invalid
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} else {
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return Nan::ThrowTypeError("Image or Canvas expected");
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}
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repeat_type_t repeat = REPEAT;
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if (0 == strcmp("no-repeat", *Nan::Utf8String(info[1]))) {
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repeat = NO_REPEAT;
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} else if (0 == strcmp("repeat-x", *Nan::Utf8String(info[1]))) {
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repeat = REPEAT_X;
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} else if (0 == strcmp("repeat-y", *Nan::Utf8String(info[1]))) {
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repeat = REPEAT_Y;
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}
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Pattern *pattern = new Pattern(surface, repeat);
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pattern->Wrap(info.This());
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info.GetReturnValue().Set(info.This());
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}
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/*
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* Initialize pattern.
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*/
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Pattern::Pattern(cairo_surface_t *surface, repeat_type_t repeat) {
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_pattern = cairo_pattern_create_for_surface(surface);
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_repeat = repeat;
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cairo_pattern_set_user_data(_pattern, pattern_repeat_key, &_repeat, NULL);
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}
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repeat_type_t Pattern::get_repeat_type_for_cairo_pattern(cairo_pattern_t *pattern) {
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void *ud = cairo_pattern_get_user_data(pattern, pattern_repeat_key);
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return *reinterpret_cast<repeat_type_t*>(ud);
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}
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/*
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* Destroy the pattern.
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*/
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Pattern::~Pattern() {
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cairo_pattern_destroy(_pattern);
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}
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