Merge pull request #829 from piranna/backends

Backends support

Author: LinusU

.gitignore

@@ -14,3 +14,4 @@ node_modules
 # Vim cruft
 *.swp
 *.un~
+npm-debug.log

binding.gyp

@@ -2,7 +2,7 @@
   'conditions': [
     ['OS=="win"', {
       'variables': {
-        'GTK_Root%': 'C:/GTK', # Set the location of GTK all-in-one bundle
+        'GTK_Root%': 'C:/GTK',  # Set the location of GTK all-in-one bundle
         'with_jpeg%': 'false',
         'with_gif%': 'false',
         'variables': { # Nest jpeg_root to evaluate it before with_jpeg
@@ -17,7 +17,7 @@
           }]
         ]
       }
-    }, { # 'OS!="win"'
+    }, {  # 'OS!="win"'
       'variables': {
         'with_jpeg%': '<!(node ./util/has_lib.js jpeg)',
         'with_gif%': '<!(node ./util/has_lib.js gif)'
@@ -57,15 +57,22 @@
       'target_name': 'canvas',
       'include_dirs': ["<!(node -e \"require('nan')\")"],
       'sources': [
+        'src/backend/Backend.cc',
+        'src/backend/ImageBackend.cc',
+        'src/backend/PdfBackend.cc',
+        'src/backend/SvgBackend.cc',
+        'src/Backends.cc',
         'src/Canvas.cc',
         'src/CanvasGradient.cc',
         'src/CanvasPattern.cc',
         'src/CanvasRenderingContext2d.cc',
+        'src/closure.cc',
         'src/color.cc',
         'src/Image.cc',
         'src/ImageData.cc',
+        'src/init.cc',
         'src/register_font.cc',
-        'src/init.cc'
+        'src/toBuffer.cc'
       ],
       'conditions': [
         ['OS=="win"', {
@@ -87,15 +94,17 @@
             '<(GTK_Root)/lib/glib-2.0/include'
           ],
           'defines': [
-            '_USE_MATH_DEFINES' # for M_PI
+            '_USE_MATH_DEFINES'  # for M_PI
           ],
           'configurations': {
             'Debug': {
               'msvs_settings': {
                 'VCCLCompilerTool': {
                   'WarningLevel': 4,
                   'ExceptionHandling': 1,
-                  'DisableSpecificWarnings': [4100, 4127, 4201, 4244, 4267, 4506, 4611, 4714, 4512]
+                  'DisableSpecificWarnings': [
+                    4100, 4127, 4201, 4244, 4267, 4506, 4611, 4714, 4512
+                  ]
                 }
               }
             },
@@ -104,12 +113,14 @@
                 'VCCLCompilerTool': {
                   'WarningLevel': 4,
                   'ExceptionHandling': 1,
-                  'DisableSpecificWarnings': [4100, 4127, 4201, 4244, 4267, 4506, 4611, 4714, 4512]
+                  'DisableSpecificWarnings': [
+                    4100, 4127, 4201, 4244, 4267, 4506, 4611, 4714, 4512
+                  ]
                 }
               }
             }
           }
-        }, { # 'OS!="win"'
+        }, {  # 'OS!="win"'
           'libraries': [
             '<!@(pkg-config pixman-1 --libs)',
             '<!@(pkg-config cairo --libs)',

examples/backends.js

@@ -0,0 +1,18 @@
+var fs = require('fs')
+var resolve = require('path').resolve
+
+var Canvas = require('..')
+
+var imagebackend = new Canvas.backends.ImageBackend(800, 600)
+
+var canvas = new Canvas(imagebackend)
+var ctx = canvas.getContext('2d')
+
+console.log('Width: ' + canvas.width + ', Height: ' + canvas.height)
+
+ctx.fillStyle = '#00FF00'
+ctx.fillRect(50, 50, 100, 100)
+
+var outPath = resolve(__dirname, 'rectangle.png')
+
+canvas.createPNGStream().pipe(fs.createWriteStream(outPath))

lib/canvas.js

@@ -11,6 +11,7 @@
  */
 
 var canvas = require('./bindings')
+  , Backends = canvas.Backends
   , Canvas = canvas.Canvas
   , Image = canvas.Image
   , cairoVersion = canvas.cairoVersion
@@ -28,6 +29,8 @@ var canvas = require('./bindings')
 
 var Canvas = exports = module.exports = Canvas;
 
+exports.backends = Backends;
+
 /**
  * Library version.
  */

src/Backends.cc

@@ -0,0 +1,18 @@
+#include "Backends.h"
+
+#include "backend/ImageBackend.h"
+#include "backend/PdfBackend.h"
+#include "backend/SvgBackend.h"
+
+using namespace v8;
+
+void Backends::Initialize(Handle<Object> target) {
+  Nan::HandleScope scope;
+
+  Local<Object> obj = Nan::New<Object>();
+  ImageBackend::Initialize(obj);
+  PdfBackend::Initialize(obj);
+  SvgBackend::Initialize(obj);
+
+  target->Set(Nan::New<String>("Backends").ToLocalChecked(), obj);
+}

src/Backends.h

@@ -0,0 +1,14 @@
+#ifndef __NODE_BACKENDS_H__
+#define __NODE_BACKENDS_H__
+
+#include <nan.h>
+
+#include "backend/Backend.h"
+
+
+class Backends : public Nan::ObjectWrap {
+  public:
+    static void Initialize(v8::Handle<v8::Object> target);
+};
+
+#endif