49 lines
1.1 KiB
Plaintext
49 lines
1.1 KiB
Plaintext
#include "SvgBackend.h"
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#include <cairo-svg.h>
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#include <napi.h>
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#include "../Canvas.h"
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#include "../closure.h"
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#include "../InstanceData.h"
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#include <cassert>
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using namespace Napi;
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SvgBackend::SvgBackend(Napi::CallbackInfo& info) : Napi::ObjectWrap<SvgBackend>(info), Backend("svg", info) {
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SvgBackend::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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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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void
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SvgBackend::Initialize(Napi::Object target) {
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Napi::Env env = target.Env();
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Napi::Function ctor = DefineClass(env, "SvgBackend", {});
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InstanceData* data = env.GetInstanceData<InstanceData>();
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data->SvgBackendCtor = Napi::Persistent(ctor);
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}
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