void EJBindingCanvas::init(JSContextRef ctx ,JSObjectRef obj, size_t argc, const JSValueRef argv[]) {
EJBindingBase::init(ctx, obj, 0, NULL);
ejectaInstance = EJApp::instance();
scalingMode = kEJScalingModeFitWidth;
useRetinaResolution = true;
msaaEnabled = false;
msaaSamples = 2;
if( firstCanvasInstance ) {
isScreenCanvas = true;
NSLOG("firstCanvasInstance : %d", firstCanvasInstance);
firstCanvasInstance = false;
NSLOG("firstCanvasInstance : %d", firstCanvasInstance);
}
if( argc == 2 ) {
width = JSValueToNumberFast(ctx, argv[0]);
height = JSValueToNumberFast(ctx, argv[1]);
}
else {
//CGSize screen = (EJApp::instance())->view->bounds->size;
width = EJApp::instance()->width;
height = EJApp::instance()->height;
}
}
EJ_BIND_FUNCTION(EJBindingCanvas,createImageData, ctx, argc, argv) {
if( argc < 2 ) { return NULL; }
float
sw = JSValueToNumberFast(ctx, argv[0]),
sh = JSValueToNumberFast(ctx, argv[1]);
GLubyte * pixels = (GLubyte *)calloc( sw * sh * 4, sizeof(GLubyte) );
EJImageData * imageData = new EJImageData(sw ,sh ,pixels);
imageData->autorelease();
// Create the JS object
EJBindingImageData* tempData = new EJBindingImageData();
JSClassRef imageDataClass = EJApp::instance()->getJSClassForClass((EJBindingBase*)tempData);
delete tempData;
JSObjectRef obj = JSObjectMake( ctx, imageDataClass, NULL );
JSValueProtect(ctx, obj);
// Create the native instance
EJBindingImageData * jsImageData =new EJBindingImageData(ctx,obj,imageData);
// Attach the native instance to the js object
JSObjectSetPrivate( obj, (void *)jsImageData );
JSValueUnprotect(ctx, obj);
return obj;
}
EJ_BIND_FUNCTION(EJBindingCanvas,getImageData, ctx, argc, argv) {
if( argc < 4 ) { return NULL; }
float
sx = JSValueToNumberFast(ctx, argv[0]),
sy = JSValueToNumberFast(ctx, argv[1]),
sw = JSValueToNumberFast(ctx, argv[2]),
sh = JSValueToNumberFast(ctx, argv[3]);
// Get the image data
//ejectaInstance->currentRenderingContext = renderingContext;
ejectaInstance->setCurrentRenderingContext(renderingContext);
EJImageData * imageData = renderingContext->getImageData(sx,sy,sw,sh);
// Create the JS object
EJBindingImageData* tempData = new EJBindingImageData();
JSClassRef imageDataClass = EJApp::instance()->getJSClassForClass((EJBindingBase*)tempData);
tempData->autorelease();
JSObjectRef obj = JSObjectMake( ctx, imageDataClass, NULL );
JSValueProtect(ctx, obj);
// Create the native instance
EJBindingImageData * jsImageData = new EJBindingImageData(ctx,obj,imageData);
// Attach the native instance to the js object
JSObjectSetPrivate( obj, (void *)jsImageData );
JSValueUnprotect(ctx, obj);
return obj;
}
EJ_BIND_FUNCTION(EJBindingCanvas, lineTo, ctx, argc, argv ) {
if( argc < 2 ) { return NULL; }
float
x = JSValueToNumberFast(ctx, argv[0]),
y = JSValueToNumberFast(ctx, argv[1]);
renderingContext->lineTo(x,y);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, quadraticCurveTo, ctx, argc, argv ) {
if( argc < 4 ) { return NULL; }
float
cpx = JSValueToNumberFast(ctx, argv[0]),
cpy = JSValueToNumberFast(ctx, argv[1]),
x = JSValueToNumberFast(ctx, argv[2]),
y = JSValueToNumberFast(ctx, argv[3]);
renderingContext->quadraticCurveTo(cpx,cpy,x,y);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, rect, ctx, argc, argv ) {
if( argc < 4 ) { return NULL; }
float
x = JSValueToNumberFast(ctx, argv[0]),
y = JSValueToNumberFast(ctx, argv[1]),
w = JSValueToNumberFast(ctx, argv[2]),
h = JSValueToNumberFast(ctx, argv[3]);
renderingContext->rect(x,y,w ,h);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, arcTo, ctx, argc, argv ) {
if( argc < 5 ) { return NULL; }
float
x1 = JSValueToNumberFast(ctx, argv[0]),
y1 = JSValueToNumberFast(ctx, argv[1]),
x2 = JSValueToNumberFast(ctx, argv[2]),
y2 = JSValueToNumberFast(ctx, argv[3]),
radius = JSValueToNumberFast(ctx, argv[4]);
renderingContext->arcTo(x1,y1,x2,y2,radius);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, strokeText, ctx, argc, argv ) {
if( argc < 3 ) { return NULL; }
NSString * string = JSValueToNSString(ctx, argv[0]);
float
x = JSValueToNumberFast(ctx, argv[1]),
y = JSValueToNumberFast(ctx, argv[2]);
//ejectaInstance->currentRenderingContext = renderingContext;
ejectaInstance->setCurrentRenderingContext(renderingContext);
renderingContext->strokeText(string ,x ,y);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, arc, ctx, argc, argv ) {
if( argc < 5 ) { return NULL; }
float
x = JSValueToNumberFast(ctx, argv[0]),
y = JSValueToNumberFast(ctx, argv[1]),
radius = JSValueToNumberFast(ctx, argv[2]),
startAngle = JSValueToNumberFast(ctx, argv[3]),
endAngle = JSValueToNumberFast(ctx, argv[4]);
BOOL antiClockwise = argc < 6 ? false : JSValueToBoolean(ctx, argv[5]);
renderingContext->arc(x,y,radius,startAngle,endAngle ,antiClockwise);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas,putImageData, ctx, argc, argv) {
if( argc < 3 ) { return NULL; }
EJBindingImageData * jsImageData = (EJBindingImageData *)JSObjectGetPrivate((JSObjectRef)argv[0]);
float
dx = JSValueToNumberFast(ctx, argv[1]),
dy = JSValueToNumberFast(ctx, argv[2]);
//ejectaInstance->currentRenderingContext = renderingContext;
ejectaInstance->setCurrentRenderingContext(renderingContext);
renderingContext->putImageData(jsImageData->m_imageData ,dx ,dy);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas,clearRect, ctx, argc, argv) {
if( argc < 4 ) { return NULL; }
float
dx = JSValueToNumberFast(ctx, argv[0]),
dy = JSValueToNumberFast(ctx, argv[1]),
w = JSValueToNumberFast(ctx, argv[2]),
h = JSValueToNumberFast(ctx, argv[3]);
//ejectaInstance->currentRenderingContext = renderingContext;
ejectaInstance->setCurrentRenderingContext(renderingContext);
renderingContext->clearRect(dx,dy,w,h);
return NULL;
}
EJ_BIND_SET( EJBindingCanvas,height, ctx, value) {
short newHeight = JSValueToNumberFast(ctx, value);
if( renderingContext && newHeight != height ) {
NSLOG("Warning: rendering context already created; can't change height");
return;
}
height = newHeight;
}
EJ_BIND_SET( EJBindingCanvas,width, ctx, value) {
short newWidth = JSValueToNumberFast(ctx, value);
if( renderingContext && newWidth != width ) {
NSLOG("Warning: rendering context already created; can't change width");
return;
}
width = newWidth;
}
EJBindingCanvas::EJBindingCanvas(JSContextRef ctx ,JSObjectRef obj, size_t argc, const JSValueRef argv[]) : renderingContext(0), isScreenCanvas(false) {
ejectaInstance = EJApp::instance();
scalingMode = kEJScalingModeFitWidth;
useRetinaResolution = true;
msaaEnabled = false;
msaaSamples = 2;
if( firstCanvasInstance ) {
isScreenCanvas = true;
firstCanvasInstance = false;
}
if( argc == 2 ) {
width = (short)JSValueToNumberFast(ctx, argv[0]);
height = (short)JSValueToNumberFast(ctx, argv[1]);
}
else {
width = EJApp::instance()->width;
height = EJApp::instance()->height;
}
}
EJ_BIND_FUNCTION(EJBindingCanvas,setTransform, ctx, argc, argv) {
if( argc < 6 ) { return NULL; }
float
m11 = JSValueToNumberFast(ctx, argv[0]),
m12 = JSValueToNumberFast(ctx, argv[1]),
m21 = JSValueToNumberFast(ctx, argv[2]),
m22 = JSValueToNumberFast(ctx, argv[3]),
dx = JSValueToNumberFast(ctx, argv[4]),
dy = JSValueToNumberFast(ctx, argv[5]);
renderingContext->setTransform(m11,m12,m21 ,m22 ,dx ,dy);
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas, bezierCurveTo, ctx, argc, argv ) {
if( argc < 6 ) { return NULL; }
float
cpx1 = JSValueToNumberFast(ctx, argv[0]),
cpy1 = JSValueToNumberFast(ctx, argv[1]),
cpx2 = JSValueToNumberFast(ctx, argv[2]),
cpy2 = JSValueToNumberFast(ctx, argv[3]),
x = JSValueToNumberFast(ctx, argv[4]),
y = JSValueToNumberFast(ctx, argv[5]);
renderingContext->bezierCurveTo(cpx1,cpy1 ,cpx2,cpy2,x,y);
return NULL;
}
EJ_BIND_SET(EJBindingHttpRequest, timeout, ctx, value) {
timeout = JSValueToNumberFast( ctx, value );
}
EJ_BIND_FUNCTION(EJBindingCanvas, drawImage, ctx, argc, argv) {
if( argc < 3 || !JSValueIsObject(ctx, argv[0]) ) return NULL;
EJBindingImage* drawable = (EJBindingImage*)JSObjectGetPrivate((JSObjectRef)argv[0]);
// NSObject<EJDrawable> * drawable = (NSObject<EJDrawable> *)JSObjectGetPrivate((JSObjectRef)argv[0]);
EJTexture * image = drawable->texture;
float scale = image->contentScale;
short sx = 0, sy = 0, sw = 0, sh = 0;
float dx = 0, dy = 0, dw = sw, dh = sh;
if( argc == 3 ) {
// drawImage(image, dx, dy)
dx = JSValueToNumberFast(ctx, argv[1]);
dy = JSValueToNumberFast(ctx, argv[2]);
sw = image->width;
sh = image->height;
dw = sw / scale;
dh = sh / scale;
}
else if( argc == 5 ) {
// drawImage(image, dx, dy, dw, dh)
dx = JSValueToNumberFast(ctx, argv[1]);
dy = JSValueToNumberFast(ctx, argv[2]);
dw = JSValueToNumberFast(ctx, argv[3]);
dh = JSValueToNumberFast(ctx, argv[4]);
sw = image->width;
sh = image->height;
}
else if( argc >= 9 ) {
// drawImage(image, sx, sy, sw, sh, dx, dy, dw, dh)
sx = JSValueToNumberFast(ctx, argv[1]) * scale;
sy = JSValueToNumberFast(ctx, argv[2]) * scale;
sw = JSValueToNumberFast(ctx, argv[3]) * scale;
sh = JSValueToNumberFast(ctx, argv[4]) * scale;
dx = JSValueToNumberFast(ctx, argv[5]);
dy = JSValueToNumberFast(ctx, argv[6]);
dw = JSValueToNumberFast(ctx, argv[7]);
dh = JSValueToNumberFast(ctx, argv[8]);
}
else {
return NULL;
}
ejectaInstance->currentRenderingContext = renderingContext;
renderingContext->drawImage(image, sx, sy, sw, sh, dx, dy, dw, dh);
// [renderingContext drawImage:image sx:sx sy:sy sw:sw sh:sh dx:dx dy:dy dw:dw dh:dh];
return NULL;
}
EJ_BIND_FUNCTION(EJBindingCanvas,rotate, ctx, argc, argv) {
if( argc < 1 ) { return NULL; }
renderingContext->rotate(JSValueToNumberFast(ctx, argv[0]));
return NULL;
}
EJ_BIND_SET(EJBindingCanvas, MSAASamples, ctx, value) {
int samples = JSValueToNumberFast(ctx, value);
if( samples == 2 || samples == 4 ) {
msaaSamples = samples;
}
}
EJ_BIND_SET( EJBindingCanvas, miterLimit, ctx, value) {
renderingContext->state->miterLimit = JSValueToNumberFast(ctx, value);
}
EJ_BIND_SET( EJBindingCanvas, lineWidth, ctx, value) {
renderingContext->state->lineWidth = JSValueToNumberFast(ctx, value);
}
EJ_BIND_SET( EJBindingCanvas, globalAlpha, ctx, value) {
renderingContext->state->globalAlpha = MIN(1,MAX(JSValueToNumberFast(ctx, value),0));
}
EJ_BIND_FUNCTION(EJBindingCanvas,scale, ctx, argc, argv) {
if( argc < 2 ) { return NULL; }
renderingContext->scale(JSValueToNumberFast(ctx, argv[0]),JSValueToNumberFast(ctx, argv[1]));
return NULL;
}
