5250871e69
It's not necessary to create HandleScope in v8 native binding functions, because it's guarrenteed that the there is a upper HandleScope when the native function is called. So unless we are urgent to free the handles, not using HandleScope in native binding functions is a cleaner and safer choice.
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "common/api/atom_api_screen.h"
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#include "common/v8/native_type_conversions.h"
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#include "ui/gfx/screen.h"
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#include "common/v8/node_common.h"
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#define UNWRAP_SCREEN_AND_CHECK \
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Screen* self = ObjectWrap::Unwrap<Screen>(args.This()); \
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if (self == NULL) \
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return node::ThrowError("Screen is already destroyed")
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namespace atom {
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namespace api {
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namespace {
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v8::Handle<v8::Object> DisplayToV8Value(const gfx::Display& display) {
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v8::Handle<v8::Object> obj = v8::Object::New();
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obj->Set(ToV8Value("bounds"), ToV8Value(display.bounds()));
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obj->Set(ToV8Value("workArea"), ToV8Value(display.work_area()));
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obj->Set(ToV8Value("size"), ToV8Value(display.size()));
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obj->Set(ToV8Value("workAreaSize"), ToV8Value(display.work_area_size()));
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obj->Set(ToV8Value("scaleFactor"), ToV8Value(display.device_scale_factor()));
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return obj;
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}
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} // namespace
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Screen::Screen(v8::Handle<v8::Object> wrapper)
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: EventEmitter(wrapper),
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screen_(gfx::Screen::GetNativeScreen()) {
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}
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Screen::~Screen() {
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}
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// static
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void Screen::New(const v8::FunctionCallbackInfo<v8::Value>& args) {
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v8::HandleScope scope(args.GetIsolate());
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if (!args.IsConstructCall())
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return node::ThrowError("Require constructor call");
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new Screen(args.This());
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}
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// static
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void Screen::GetCursorScreenPoint(
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const v8::FunctionCallbackInfo<v8::Value>& args) {
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UNWRAP_SCREEN_AND_CHECK;
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args.GetReturnValue().Set(ToV8Value(self->screen_->GetCursorScreenPoint()));
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}
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// static
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void Screen::GetPrimaryDisplay(
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const v8::FunctionCallbackInfo<v8::Value>& args) {
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UNWRAP_SCREEN_AND_CHECK;
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gfx::Display display = self->screen_->GetPrimaryDisplay();
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args.GetReturnValue().Set(DisplayToV8Value(display));
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}
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// static
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void Screen::Initialize(v8::Handle<v8::Object> target) {
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v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(New);
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t->InstanceTemplate()->SetInternalFieldCount(1);
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t->SetClassName(v8::String::NewSymbol("Screen"));
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NODE_SET_PROTOTYPE_METHOD(t, "getCursorScreenPoint", GetCursorScreenPoint);
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NODE_SET_PROTOTYPE_METHOD(t, "getPrimaryDisplay", GetPrimaryDisplay);
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target->Set(v8::String::NewSymbol("Screen"), t->GetFunction());
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}
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} // namespace api
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} // namespace atom
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NODE_MODULE(atom_common_screen, atom::api::Screen::Initialize)
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