--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/js/JSCanvasRenderingContext2DCustom.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,442 @@
+/*
+ * 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*, JSValue value)
+{
+ 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());
+ if (value.isString()) {
+ context->setStrokeColor(ustringToString(asString(value)->value(exec)));
+ return;
+ }
+ 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());
+ if (value.isString()) {
+ context->setFillColor(ustringToString(asString(value)->value(exec)));
+ return;
+ }
+ context->setFillStyle(toHTMLCanvasStyle(exec, value));
+}
+
+JSValue JSCanvasRenderingContext2D::setFillColor(ExecState* exec)
+{
+ 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 (exec->argumentCount()) {
+ case 1:
+ if (exec->argument(0).isString())
+ context->setFillColor(ustringToString(asString(exec->argument(0))->value(exec)));
+ else
+ context->setFillColor(exec->argument(0).toFloat(exec));
+ break;
+ case 2:
+ if (exec->argument(0).isString())
+ context->setFillColor(ustringToString(asString(exec->argument(0))->value(exec)), exec->argument(1).toFloat(exec));
+ else
+ context->setFillColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec));
+ break;
+ case 4:
+ context->setFillColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ break;
+ case 5:
+ context->setFillColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec));
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::setStrokeColor(ExecState* exec)
+{
+ 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 (exec->argumentCount()) {
+ case 1:
+ if (exec->argument(0).isString())
+ context->setStrokeColor(ustringToString(asString(exec->argument(0))->value(exec)));
+ else
+ context->setStrokeColor(exec->argument(0).toFloat(exec));
+ break;
+ case 2:
+ if (exec->argument(0).isString())
+ context->setStrokeColor(ustringToString(asString(exec->argument(0))->value(exec)), exec->argument(1).toFloat(exec));
+ else
+ context->setStrokeColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec));
+ break;
+ case 4:
+ context->setStrokeColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ break;
+ case 5:
+ context->setStrokeColor(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec));
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::strokeRect(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ if (exec->argumentCount() <= 4)
+ context->strokeRect(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ else
+ context->strokeRect(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec));
+
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::drawImage(ExecState* exec)
+{
+ 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 = exec->argument(0);
+ if (!value.isObject())
+ return throwTypeError(exec);
+ JSObject* o = asObject(value);
+
+ ExceptionCode ec = 0;
+ if (o->inherits(&JSHTMLImageElement::s_info)) {
+ HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl());
+ switch (exec->argumentCount()) {
+ case 3:
+ context->drawImage(imgElt, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), ec);
+ break;
+ case 5:
+ context->drawImage(imgElt, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec), ec);
+ setDOMException(exec, ec);
+ break;
+ case 9:
+ context->drawImage(imgElt, FloatRect(exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec)),
+ FloatRect(exec->argument(5).toFloat(exec), exec->argument(6).toFloat(exec),
+ exec->argument(7).toFloat(exec), exec->argument(8).toFloat(exec)), ec);
+ setDOMException(exec, ec);
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+ } else if (o->inherits(&JSHTMLCanvasElement::s_info)) {
+ HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(o)->impl());
+ switch (exec->argumentCount()) {
+ case 3:
+ context->drawImage(canvas, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), ec);
+ setDOMException(exec, ec);
+ break;
+ case 5:
+ context->drawImage(canvas, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec), ec);
+ setDOMException(exec, ec);
+ break;
+ case 9:
+ context->drawImage(canvas, FloatRect(exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec)),
+ FloatRect(exec->argument(5).toFloat(exec), exec->argument(6).toFloat(exec),
+ exec->argument(7).toFloat(exec), exec->argument(8).toFloat(exec)), ec);
+ setDOMException(exec, ec);
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+#if ENABLE(VIDEO)
+ } else if (o->inherits(&JSHTMLVideoElement::s_info)) {
+ HTMLVideoElement* video = static_cast<HTMLVideoElement*>(static_cast<JSHTMLElement*>(o)->impl());
+ switch (exec->argumentCount()) {
+ case 3:
+ context->drawImage(video, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), ec);
+ break;
+ case 5:
+ context->drawImage(video, exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec), ec);
+ setDOMException(exec, ec);
+ break;
+ case 9:
+ context->drawImage(video, FloatRect(exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec)),
+ FloatRect(exec->argument(5).toFloat(exec), exec->argument(6).toFloat(exec),
+ exec->argument(7).toFloat(exec), exec->argument(8).toFloat(exec)), ec);
+ setDOMException(exec, ec);
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+#endif
+ } else
+ return throwTypeError(exec);
+
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::drawImageFromRect(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ JSValue value = exec->argument(0);
+ if (!value.isObject())
+ return throwTypeError(exec);
+ JSObject* o = asObject(value);
+
+ if (!o->inherits(&JSHTMLImageElement::s_info))
+ return throwTypeError(exec);
+ context->drawImageFromRect(static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl()),
+ exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec),
+ exec->argument(5).toFloat(exec), exec->argument(6).toFloat(exec),
+ exec->argument(7).toFloat(exec), exec->argument(8).toFloat(exec),
+ ustringToString(exec->argument(9).toString(exec)));
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::setShadow(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ switch (exec->argumentCount()) {
+ case 3:
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec));
+ break;
+ case 4:
+ if (exec->argument(3).isString())
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), ustringToString(asString(exec->argument(3))->value(exec)));
+ else
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ break;
+ case 5:
+ if (exec->argument(3).isString())
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), ustringToString(asString(exec->argument(3))->value(exec)),
+ exec->argument(4).toFloat(exec));
+ else
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec),
+ exec->argument(4).toFloat(exec));
+ break;
+ case 7:
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec),
+ exec->argument(4).toFloat(exec), exec->argument(5).toFloat(exec),
+ exec->argument(6).toFloat(exec));
+ break;
+ case 8:
+ context->setShadow(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec),
+ exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec),
+ exec->argument(4).toFloat(exec), exec->argument(5).toFloat(exec),
+ exec->argument(6).toFloat(exec), exec->argument(7).toFloat(exec));
+ break;
+ default:
+ return throwSyntaxError(exec);
+ }
+
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::createPattern(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ JSValue value = exec->argument(0);
+ if (!value.isObject())
+ return throwTypeError(exec);
+ 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, exec->argument(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, exec->argument(1)), ec).get());
+ setDOMException(exec, ec);
+ return pattern;
+ }
+ setDOMException(exec, TYPE_MISMATCH_ERR);
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::createImageData(ExecState* exec)
+{
+ // createImageData has two variants
+ // createImageData(ImageData)
+ // createImageData(width, height)
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+ RefPtr<ImageData> imageData = 0;
+
+ ExceptionCode ec = 0;
+ if (exec->argumentCount() == 1)
+ imageData = context->createImageData(toImageData(exec->argument(0)), ec);
+ else if (exec->argumentCount() == 2)
+ imageData = context->createImageData(exec->argument(0).toFloat(exec), exec->argument(1).toFloat(exec), ec);
+
+ setDOMException(exec, ec);
+ return toJS(exec, globalObject(), WTF::getPtr(imageData));
+}
+
+JSValue JSCanvasRenderingContext2D::putImageData(ExecState* exec)
+{
+ // 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 (exec->argumentCount() >= 7)
+ context->putImageData(toImageData(exec->argument(0)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec),
+ exec->argument(3).toFloat(exec), exec->argument(4).toFloat(exec), exec->argument(5).toFloat(exec), exec->argument(6).toFloat(exec), ec);
+ else
+ context->putImageData(toImageData(exec->argument(0)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), ec);
+
+ setDOMException(exec, ec);
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::fillText(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ // string arg = text to draw
+ // number arg = x
+ // number arg = y
+ // optional number arg = maxWidth
+ if (exec->argumentCount() < 3 || exec->argumentCount() > 4)
+ return throwSyntaxError(exec);
+
+ if (exec->argumentCount() == 4)
+ context->fillText(ustringToString(exec->argument(0).toString(exec)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ else
+ context->fillText(ustringToString(exec->argument(0).toString(exec)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec));
+ return jsUndefined();
+}
+
+JSValue JSCanvasRenderingContext2D::strokeText(ExecState* exec)
+{
+ CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
+
+ // string arg = text to draw
+ // number arg = x
+ // number arg = y
+ // optional number arg = maxWidth
+ if (exec->argumentCount() < 3 || exec->argumentCount() > 4)
+ return throwSyntaxError(exec);
+
+ if (exec->argumentCount() == 4)
+ context->strokeText(ustringToString(exec->argument(0).toString(exec)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec), exec->argument(3).toFloat(exec));
+ else
+ context->strokeText(ustringToString(exec->argument(0).toString(exec)), exec->argument(1).toFloat(exec), exec->argument(2).toFloat(exec));
+ return jsUndefined();
+}
+
+} // namespace WebCore