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91 lines
1.8 KiB
91 lines
1.8 KiB
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//
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// Pattern.cc
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//
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// Copyright (c) 2010 LearnBoost <tj@learnboost.com>
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//
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#include "Canvas.h"
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#include "Image.h"
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#include "CanvasPattern.h"
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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(Handle<Object> target) {
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HandleScope scope;
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// Constructor
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Local<FunctionTemplate> ctor = FunctionTemplate::New(Pattern::New);
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NanAssignPersistent(FunctionTemplate, constructor, ctor);
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(NanSymbol("CanvasPattern"));
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(NanSymbol("CanvasPattern"));
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// Prototype
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target->Set(NanSymbol("CanvasPattern"), ctor->GetFunction());
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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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NanScope();
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int w = 0
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, h = 0;
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cairo_surface_t *surface;
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Local<Object> obj = args[0]->ToObject();
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// Image
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if (NanHasInstance(Image::constructor, obj)) {
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Image *img = ObjectWrap::Unwrap<Image>(obj);
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if (!img->isComplete()) {
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return NanThrowError("Image given has not completed loading");
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}
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w = img->width;
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h = img->height;
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surface = img->surface();
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// Canvas
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} else if (NanHasInstance(Canvas::constructor, obj)) {
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Canvas *canvas = ObjectWrap::Unwrap<Canvas>(obj);
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w = canvas->width;
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h = canvas->height;
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surface = canvas->surface();
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// Invalid
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} else {
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return NanThrowTypeError("Image or Canvas expected");
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}
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Pattern *pattern = new Pattern(surface,w,h);
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pattern->Wrap(args.This());
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NanReturnValue(args.This());
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}
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/*
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* Initialize linear gradient.
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*/
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Pattern::Pattern(cairo_surface_t *surface, int w, int h):
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_width(w), _height(h) {
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_pattern = cairo_pattern_create_for_surface(surface);
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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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