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Enhanced image rendering methods #37

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Enhanced image rendering methods #37

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4 changes: 2 additions & 2 deletions examples/jquery.js
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26 changes: 26 additions & 0 deletions examples/render-html-snippet.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
var Chimera = require(__dirname + '/../lib/main').Chimera;

var c = new Chimera();
var start = new Date();
var htmlSnippet =
'<html>' +
'<head></head>' +
'<body>' +
'<div id="theDiv" style="height: 100px; width: 500px; border: 4px solid #f00; background-size: 50px 50px; background-color: #fc0; background-image: -webkit-linear-gradient(-45deg, rgba(255, 255, 255, .2) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .2) 50%, rgba(255, 255, 255, .2) 75%, transparent 75%, transparent);text-align: center; color:#bbb; text-shadow: #888 1px 1px;"><h1 style="line-height: 100px; margin: 0px;">Hello World</h1></div>' +
'</body>' +
'</html>';

c.perform({
html: htmlSnippet,

callback: function (err, result) {
// Clip the capture to our Div
c.browser.clipToElement("#theDiv");
// Capture to File
c.browser.capture('html-render.png');

console.log("All done. Took " + (new Date() - start) + 'ms');
c.close();
process.exit();
}
});
20 changes: 20 additions & 0 deletions examples/render-to-node-buffer.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
var Chimera = require(__dirname + '/../lib/main').Chimera;

var c = new Chimera();
var start = new Date();
c.perform({
url: "http://www.google.com",
callback: function (err, result) {
console.log('capture screen shot to a buffer');
var imageBuffer = c.browser.captureBytes();
var fs = require('fs');
fs.writeFileSync("direct.png", imageBuffer);
// We now have a buffer containing the PNG image data. we can send this directly over the wire without touching the filesystem.

// Or write it to the filesystem for demo purposes. Whatever.
console.log("All done. Took " + (new Date() - start) + 'ms');

c.close();
process.exit();
}
});
12 changes: 10 additions & 2 deletions lib/main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -45,8 +45,16 @@ function Chimera(options) {
}
}

Chimera.prototype.capture = function(filename) {
return this.browser.capture(filename);
Chimera.prototype.clipToElement = function(selector){
this.browser.clipToElement(selector);
}

Chimera.prototype.capture = function (filename) {
return this.browser.capture(filename);
};

Chimera.prototype.captureBytes = function () {
return this.browser.captureBytes();
};

Chimera.prototype.cookies = function() {
Expand Down
117 changes: 104 additions & 13 deletions src/browser.cc
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
#define BUILDING_NODE_EXTENSION
#include <node.h>
#include "browser.h"
#include "top_v8.h"
Expand All @@ -20,11 +21,14 @@ Browser::~Browser() {
void Browser::Initialize(Handle<Object> target) {
Local<FunctionTemplate> tpl = FunctionTemplate::New(New);
tpl->SetClassName(String::NewSymbol("Browser"));
tpl->InstanceTemplate()->SetInternalFieldCount(1);
tpl->InstanceTemplate()->SetInternalFieldCount(1);

tpl->PrototypeTemplate()->Set(String::NewSymbol("open"), FunctionTemplate::New(Open)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("renderSnippet"), FunctionTemplate::New(RenderSnippet)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("clipToElement"), FunctionTemplate::New(ClipToElement)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("close"), FunctionTemplate::New(Close)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("capture"), FunctionTemplate::New(Capture)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("captureBytes"), FunctionTemplate::New(CaptureBytes)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("cookies"), FunctionTemplate::New(Cookies)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("setCookies"), FunctionTemplate::New(SetCookies)->GetFunction());
tpl->PrototypeTemplate()->Set(String::NewSymbol("setProxy"), FunctionTemplate::New(SetProxy)->GetFunction());
Expand Down Expand Up @@ -100,7 +104,7 @@ Handle<Value> Browser::Cookies(const Arguments& args) {
if (0 != chimera) {
cookies = chimera->getCookies();
}

return scope.Close(top_v8::FromQString(cookies));
}

Expand All @@ -119,10 +123,29 @@ Handle<Value> Browser::SetCookies(const Arguments& args) {
if (0 != chimera) {
chimera->setCookies(top_v8::ToQString(args[0]->ToString()));
}

return scope.Close(Undefined());
}

Handle<Value> Browser::ClipToElement(const Arguments& args) {
HandleScope scope;

if (!args[0]->IsString()) {
return ThrowException(Exception::TypeError(
String::New("First argument must be an element selector")));
}

Browser* w = ObjectWrap::Unwrap<Browser>(args.This());
Chimera* chimera = w->getChimera();

if (0 != chimera) {
chimera->clipToElement(top_v8::ToQString(args[0]->ToString()));
}

return scope.Close(Undefined());
}


Handle<Value> Browser::SetProxy(const Arguments& args) {
HandleScope scope;

Expand All @@ -135,49 +158,116 @@ Handle<Value> Browser::SetProxy(const Arguments& args) {
Chimera* chimera = w->getChimera();

if (0 != chimera) {
chimera->setProxy(top_v8::ToQString(args[0]->ToString()), top_v8::ToQString(args[1]->ToString()), args[2]->Int32Value(),
chimera->setProxy(top_v8::ToQString(args[0]->ToString()), top_v8::ToQString(args[1]->ToString()), args[2]->Int32Value(),
top_v8::ToQString(args[3]->ToString()), top_v8::ToQString(args[4]->ToString()));
}

return scope.Close(Undefined());
}


Handle<Value> Browser::Capture(const Arguments& args) {
HandleScope scope;

if (!args[0]->IsString()) {
return ThrowException(Exception::TypeError(
String::New("First argument must be a filename string")));
}

Browser* w = ObjectWrap::Unwrap<Browser>(args.This());
Chimera* chimera = w->getChimera();

if (0 != chimera) {
chimera->capture(top_v8::ToQString(args[0]->ToString()));
}

return scope.Close(Undefined());
}

Handle<Value> Browser::Close(const Arguments& args) {
Handle<Value> Browser::CaptureBytes(const Arguments& args) {
HandleScope scope;

Browser* w = ObjectWrap::Unwrap<Browser>(args.This());
Chimera* chimera = w->getChimera();
QByteArray qb;
if (0 != chimera) {
qb = chimera->captureBytes();
}

return scope.Close(top_v8::ToNodeBuffer(qb)->handle_);
}



Handle<Value> Browser::Close(const Arguments& args) {
HandleScope scope;

Browser* w = ObjectWrap::Unwrap<Browser>(args.This());
Chimera* chimera = w->getChimera();

if (0 != chimera) {
chimera->exit(1);
w->setChimera(0);
chimera->deleteLater();
}

return scope.Close(Undefined());
}

Handle<Value> Browser::Open(const Arguments& args) {
HandleScope scope;

if (!args[1]->IsString()) {
return ThrowException(Exception::TypeError(
String::New("Second argument must be a javascript string")));
}

if (!args[2]->IsFunction()) {
return ThrowException(Exception::TypeError(
String::New("Third argument must be a callback function")));
}

Local<Function> callback = Local<Function>::Cast(args[2]);

BWork* work = new BWork();
work->error = false;
work->request.data = work;
work->callback = Persistent<Function>::New(callback);

Browser* w = ObjectWrap::Unwrap<Browser>(args.This());
Chimera* chimera = w->getChimera();

if (0 != chimera) {
work->chimera = chimera;
} else {
work->chimera = new Chimera();
work->chimera->setUserAgent(w->userAgent());
work->chimera->setLibraryCode(w->libraryCode());
work->chimera->setCookies(w->cookies());
if (w->disableImages_) {
work->chimera->disableImages();
}
w->setChimera(work->chimera);
}

work->chimera->setEmbedScript(top_v8::ToQString(args[1]->ToString()));

if (args[0]->IsString()) {
work->url = top_v8::ToQString(args[0]->ToString());
work->chimera->open(work->url);
} else {
std::cout << "debug -- about to call execute" << std::endl;
work->chimera->execute();
}

int status = uv_queue_work(uv_default_loop(), &work->request, AsyncWork, (uv_after_work_cb)AsyncAfter);
assert(status == 0);

return Undefined();
}

Handle<Value> Browser::RenderSnippet(const Arguments& args) {
HandleScope scope;

if (!args[1]->IsString()) {
return ThrowException(Exception::TypeError(
Expand Down Expand Up @@ -215,10 +305,9 @@ Handle<Value> Browser::Open(const Arguments& args) {
work->chimera->setEmbedScript(top_v8::ToQString(args[1]->ToString()));

if (args[0]->IsString()) {
work->url = top_v8::ToQString(args[0]->ToString());
work->chimera->open(work->url);
work->html = top_v8::ToQString(args[0]->ToString());
work->chimera->renderSnippet(work->html);
} else {
std::cout << "debug -- about to call execute" << std::endl;
work->chimera->execute();
}

Expand All @@ -227,3 +316,5 @@ Handle<Value> Browser::Open(const Arguments& args) {

return Undefined();
}


4 changes: 4 additions & 0 deletions src/browser.h
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ struct BWork {
Chimera* chimera;
QString code;
QString url;
QString html;
QString errorResult;
};

Expand All @@ -34,11 +35,14 @@ class Browser : public node::ObjectWrap {
static v8::Persistent<v8::Function> constructor;
static v8::Handle<v8::Value> New(const v8::Arguments& args);
static v8::Handle<v8::Value> Open(const v8::Arguments& args);
static v8::Handle<v8::Value> RenderSnippet(const v8::Arguments& args);
static v8::Handle<v8::Value> Close(const v8::Arguments& args);
static v8::Handle<v8::Value> Capture(const v8::Arguments& args);
static v8::Handle<v8::Value> Cookies(const v8::Arguments& args);
static v8::Handle<v8::Value> SetCookies(const v8::Arguments& args);
static v8::Handle<v8::Value> SetProxy(const v8::Arguments& args);
static v8::Handle<v8::Value> ClipToElement(const v8::Arguments& args);
static v8::Handle<v8::Value> CaptureBytes(const v8::Arguments& args);

Chimera* chimera_;
QString libraryCode_;
Expand Down
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