62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#include "SvgBackend.h"
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#include <cairo-svg.h>
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#include "../Canvas.h"
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#include "../closure.h"
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#include <cassert>
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using namespace v8;
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SvgBackend::SvgBackend(int width, int height)
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: Backend("svg", width, height) {
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createSurface();
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}
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SvgBackend::~SvgBackend() {
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cairo_surface_finish(surface);
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if (_closure) {
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delete _closure;
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_closure = nullptr;
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}
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destroySurface();
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}
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Backend *SvgBackend::construct(int width, int height){
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return new SvgBackend(width, height);
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}
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cairo_surface_t* SvgBackend::createSurface() {
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assert(!_closure);
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_closure = new PdfSvgClosure(canvas);
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surface = cairo_svg_surface_create_for_stream(PdfSvgClosure::writeVec, _closure, width, height);
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return surface;
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}
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cairo_surface_t* SvgBackend::recreateSurface() {
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cairo_surface_finish(surface);
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delete _closure;
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_closure = nullptr;
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cairo_surface_destroy(surface);
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return createSurface();
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}
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Nan::Persistent<FunctionTemplate> SvgBackend::constructor;
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void SvgBackend::Initialize(Local<Object> target) {
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Nan::HandleScope scope;
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Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(SvgBackend::New);
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SvgBackend::constructor.Reset(ctor);
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(Nan::New<String>("SvgBackend").ToLocalChecked());
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Nan::Set(target,
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Nan::New<String>("SvgBackend").ToLocalChecked(),
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Nan::GetFunction(ctor).ToLocalChecked()).Check();
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}
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NAN_METHOD(SvgBackend::New) {
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init(info);
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}
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