| /* |
| * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "JSCanvasRenderingContext2D.h" |
| |
| #include "CanvasGradient.h" |
| #include "CanvasPattern.h" |
| #include "CanvasRenderingContext2D.h" |
| #include "CanvasStyle.h" |
| #include "ExceptionCode.h" |
| #include "FloatRect.h" |
| #include "HTMLCanvasElement.h" |
| #include "HTMLImageElement.h" |
| #include "HTMLVideoElement.h" |
| #include "ImageData.h" |
| #include "JSCanvasGradient.h" |
| #include "JSCanvasPattern.h" |
| #include "JSHTMLCanvasElement.h" |
| #include "JSHTMLImageElement.h" |
| #include "JSHTMLVideoElement.h" |
| #include "JSImageData.h" |
| #include <runtime/Error.h> |
| |
| using namespace JSC; |
| |
| namespace WebCore { |
| |
| static JSValue toJS(ExecState* exec, CanvasStyle* style) |
| { |
| if (style->canvasGradient()) |
| return toJS(exec, style->canvasGradient()); |
| if (style->canvasPattern()) |
| return toJS(exec, style->canvasPattern()); |
| return jsString(exec, style->color()); |
| } |
| |
| static PassRefPtr<CanvasStyle> toHTMLCanvasStyle(ExecState* exec, JSValue value) |
| { |
| if (value.isString()) |
| return CanvasStyle::create(asString(value)->value(exec)); |
| if (!value.isObject()) |
| return 0; |
| JSObject* object = asObject(value); |
| if (object->inherits(&JSCanvasGradient::s_info)) |
| return CanvasStyle::create(static_cast<JSCanvasGradient*>(object)->impl()); |
| if (object->inherits(&JSCanvasPattern::s_info)) |
| return CanvasStyle::create(static_cast<JSCanvasPattern*>(object)->impl()); |
| return 0; |
| } |
| |
| JSValue JSCanvasRenderingContext2D::strokeStyle(ExecState* exec) const |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| return toJS(exec, context->strokeStyle()); |
| } |
| |
| void JSCanvasRenderingContext2D::setStrokeStyle(ExecState* exec, JSValue value) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| context->setStrokeStyle(toHTMLCanvasStyle(exec, value)); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::fillStyle(ExecState* exec) const |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| return toJS(exec, context->fillStyle()); |
| } |
| |
| void JSCanvasRenderingContext2D::setFillStyle(ExecState* exec, JSValue value) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| context->setFillStyle(toHTMLCanvasStyle(exec, value)); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::setFillColor(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| // string arg = named color |
| // number arg = gray color |
| // string arg, number arg = named color, alpha |
| // number arg, number arg = gray color, alpha |
| // 4 args = r, g, b, a |
| // 5 args = c, m, y, k, a |
| switch (args.size()) { |
| case 1: |
| if (args.at(0).isString()) |
| context->setFillColor(asString(args.at(0))->value(exec)); |
| else |
| context->setFillColor(args.at(0).toFloat(exec)); |
| break; |
| case 2: |
| if (args.at(0).isString()) |
| context->setFillColor(asString(args.at(0))->value(exec), args.at(1).toFloat(exec)); |
| else |
| context->setFillColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec)); |
| break; |
| case 4: |
| context->setFillColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| break; |
| case 5: |
| context->setFillColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), args.at(4).toFloat(exec)); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::setStrokeColor(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| // string arg = named color |
| // number arg = gray color |
| // string arg, number arg = named color, alpha |
| // number arg, number arg = gray color, alpha |
| // 4 args = r, g, b, a |
| // 5 args = c, m, y, k, a |
| switch (args.size()) { |
| case 1: |
| if (args.at(0).isString()) |
| context->setStrokeColor(asString(args.at(0))->value(exec)); |
| else |
| context->setStrokeColor(args.at(0).toFloat(exec)); |
| break; |
| case 2: |
| if (args.at(0).isString()) |
| context->setStrokeColor(asString(args.at(0))->value(exec), args.at(1).toFloat(exec)); |
| else |
| context->setStrokeColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec)); |
| break; |
| case 4: |
| context->setStrokeColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| break; |
| case 5: |
| context->setStrokeColor(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), args.at(4).toFloat(exec)); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::strokeRect(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| if (args.size() <= 4) |
| context->strokeRect(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| else |
| context->strokeRect(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), args.at(4).toFloat(exec)); |
| |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::drawImage(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| // DrawImage has three variants: |
| // drawImage(img, dx, dy) |
| // drawImage(img, dx, dy, dw, dh) |
| // drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh) |
| // Composite operation is specified with globalCompositeOperation. |
| // The img parameter can be a <img> or <canvas> element. |
| JSValue value = args.at(0); |
| if (!value.isObject()) |
| return throwError(exec, TypeError); |
| JSObject* o = asObject(value); |
| |
| ExceptionCode ec = 0; |
| if (o->inherits(&JSHTMLImageElement::s_info)) { |
| HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl()); |
| switch (args.size()) { |
| case 3: |
| context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec)); |
| break; |
| case 5: |
| context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec); |
| setDOMException(exec, ec); |
| break; |
| case 9: |
| context->drawImage(imgElt, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec)), |
| FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec), |
| args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec); |
| setDOMException(exec, ec); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| } else if (o->inherits(&JSHTMLCanvasElement::s_info)) { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(o)->impl()); |
| switch (args.size()) { |
| case 3: |
| context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec)); |
| break; |
| case 5: |
| context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec); |
| setDOMException(exec, ec); |
| break; |
| case 9: |
| context->drawImage(canvas, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec)), |
| FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec), |
| args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec); |
| setDOMException(exec, ec); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| #if ENABLE(VIDEO) |
| } else if (o->inherits(&JSHTMLVideoElement::s_info)) { |
| HTMLVideoElement* video = static_cast<HTMLVideoElement*>(static_cast<JSHTMLElement*>(o)->impl()); |
| switch (args.size()) { |
| case 3: |
| context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec)); |
| break; |
| case 5: |
| context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec); |
| setDOMException(exec, ec); |
| break; |
| case 9: |
| context->drawImage(video, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec)), |
| FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec), |
| args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec); |
| setDOMException(exec, ec); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| #endif |
| } else { |
| setDOMException(exec, TYPE_MISMATCH_ERR); |
| } |
| |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::drawImageFromRect(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| JSValue value = args.at(0); |
| if (!value.isObject()) |
| return throwError(exec, TypeError); |
| JSObject* o = asObject(value); |
| |
| if (!o->inherits(&JSHTMLImageElement::s_info)) |
| return throwError(exec, TypeError); |
| context->drawImageFromRect(static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl()), |
| args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec), |
| args.at(5).toFloat(exec), args.at(6).toFloat(exec), |
| args.at(7).toFloat(exec), args.at(8).toFloat(exec), |
| args.at(9).toString(exec)); |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::setShadow(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| switch (args.size()) { |
| case 3: |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec)); |
| break; |
| case 4: |
| if (args.at(3).isString()) |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), asString(args.at(3))->value(exec)); |
| else |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| break; |
| case 5: |
| if (args.at(3).isString()) |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), asString(args.at(3))->value(exec), |
| args.at(4).toFloat(exec)); |
| else |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), |
| args.at(4).toFloat(exec)); |
| break; |
| case 7: |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), |
| args.at(4).toFloat(exec), args.at(5).toFloat(exec), |
| args.at(6).toFloat(exec)); |
| break; |
| case 8: |
| context->setShadow(args.at(0).toFloat(exec), args.at(1).toFloat(exec), |
| args.at(2).toFloat(exec), args.at(3).toFloat(exec), |
| args.at(4).toFloat(exec), args.at(5).toFloat(exec), |
| args.at(6).toFloat(exec), args.at(7).toFloat(exec)); |
| break; |
| default: |
| return throwError(exec, SyntaxError); |
| } |
| |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::createPattern(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| JSValue value = args.at(0); |
| if (!value.isObject()) |
| return throwError(exec, TypeError); |
| JSObject* o = asObject(value); |
| |
| if (o->inherits(&JSHTMLImageElement::s_info)) { |
| ExceptionCode ec; |
| JSValue pattern = toJS(exec, |
| context->createPattern(static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl()), |
| valueToStringWithNullCheck(exec, args.at(1)), ec).get()); |
| setDOMException(exec, ec); |
| return pattern; |
| } |
| if (o->inherits(&JSHTMLCanvasElement::s_info)) { |
| ExceptionCode ec; |
| JSValue pattern = toJS(exec, |
| context->createPattern(static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(o)->impl()), |
| valueToStringWithNullCheck(exec, args.at(1)), ec).get()); |
| setDOMException(exec, ec); |
| return pattern; |
| } |
| setDOMException(exec, TYPE_MISMATCH_ERR); |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::putImageData(ExecState* exec, const ArgList& args) |
| { |
| // putImageData has two variants |
| // putImageData(ImageData, x, y) |
| // putImageData(ImageData, x, y, dirtyX, dirtyY, dirtyWidth, dirtyHeight) |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| ExceptionCode ec = 0; |
| if (args.size() >= 7) |
| context->putImageData(toImageData(args.at(0)), args.at(1).toFloat(exec), args.at(2).toFloat(exec), |
| args.at(3).toFloat(exec), args.at(4).toFloat(exec), args.at(5).toFloat(exec), args.at(6).toFloat(exec), ec); |
| else |
| context->putImageData(toImageData(args.at(0)), args.at(1).toFloat(exec), args.at(2).toFloat(exec), ec); |
| |
| setDOMException(exec, ec); |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::fillText(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| // string arg = text to draw |
| // number arg = x |
| // number arg = y |
| // optional number arg = maxWidth |
| if (args.size() < 3 || args.size() > 4) |
| return throwError(exec, SyntaxError); |
| |
| if (args.size() == 4) |
| context->fillText(args.at(0).toString(exec), args.at(1).toFloat(exec), args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| else |
| context->fillText(args.at(0).toString(exec), args.at(1).toFloat(exec), args.at(2).toFloat(exec)); |
| return jsUndefined(); |
| } |
| |
| JSValue JSCanvasRenderingContext2D::strokeText(ExecState* exec, const ArgList& args) |
| { |
| CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl()); |
| |
| // string arg = text to draw |
| // number arg = x |
| // number arg = y |
| // optional number arg = maxWidth |
| if (args.size() < 3 || args.size() > 4) |
| return throwError(exec, SyntaxError); |
| |
| if (args.size() == 4) |
| context->strokeText(args.at(0).toString(exec), args.at(1).toFloat(exec), args.at(2).toFloat(exec), args.at(3).toFloat(exec)); |
| else |
| context->strokeText(args.at(0).toString(exec), args.at(1).toFloat(exec), args.at(2).toFloat(exec)); |
| return jsUndefined(); |
| } |
| |
| } // namespace WebCore |
