mirror of
https://github.com/RGBCube/serenity
synced 2025-07-24 19:27:35 +00:00
LibWeb: Add <canvas> element and start fleshing out CRC2D
This patch adds HTMLCanvasElement along with a LayoutCanvas object. The DOM and layout parts are very similar to <img> elements. The <canvas> element holds a Gfx::Bitmap which is sized according to the "width" and "height" attributes on the element. Calling .getContext("2d") on a <canvas> element gives you a context object that draws into the underlying Gfx::Bitmap of the <canvas>. The context weakly points to the <canvas> which allows it to outlive the canvas element if needed. This is really quite cool. :^)
This commit is contained in:
parent
73d28a0551
commit
a37c29e353
19 changed files with 649 additions and 1 deletions
27
Base/home/anon/www/canvas.html
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27
Base/home/anon/www/canvas.html
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@ -0,0 +1,27 @@
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<!DOCTYPE html>
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<html>
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<head>
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<title>Canvas 2D test!</title>
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<style type="text/css">
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body {
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background-color: #000;
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color: #fff; /* another css comment */
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}
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canvas {
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border-width: 1px;
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border-style: solid;
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border-color: #fff;
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}
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</style>
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<script>
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document.addEventListener("DOMContentLoaded", function() {
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ctx = document.getElementById("foo").getContext("2d");
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ctx.fillStyle = 'red';
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ctx.fillRect(10, 10, 200, 100);
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});
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</script>
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</head>
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<body link="#44f" vlink="#c4c" background="90s-bg.png">
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<canvas id="foo" width="300" height="200"></canvas>
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</body>
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</html>
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@ -23,6 +23,7 @@ h1 {
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<p>This is a very simple browser built on the LibWeb engine.</p>
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<p>Some small test pages:</p>
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<ul>
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<li><a href="canvas.html">canvas 2D test</a></li>
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<li><a href="events.html">simple DOM events test</a></li>
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<li><a href="dom.html">simple DOM JS test</a></li>
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<li><a href="alert.html">alert() test</a></li>
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@ -0,0 +1,65 @@
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
|
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Function.h>
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#include <LibJS/Runtime/PrimitiveString.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibWeb/Bindings/CanvasRenderingContext2DWrapper.h>
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#include <LibWeb/DOM/CanvasRenderingContext2D.h>
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namespace Web {
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namespace Bindings {
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CanvasRenderingContext2DWrapper* wrap(JS::Heap& heap, CanvasRenderingContext2D& impl)
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{
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return static_cast<CanvasRenderingContext2DWrapper*>(wrap_impl(heap, impl));
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}
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CanvasRenderingContext2DWrapper::CanvasRenderingContext2DWrapper(CanvasRenderingContext2D& impl)
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: m_impl(impl)
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{
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put_native_property(
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"fillStyle",
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[this](JS::Object*) {
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return JS::js_string(heap(), m_impl->fill_style());
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},
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[this](JS::Object*, JS::Value value) {
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m_impl->set_fill_style(value.to_string());
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});
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put_native_function("fillRect", [this](JS::Object*, const Vector<JS::Value>& arguments) {
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if (arguments.size() >= 4) {
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m_impl->fill_rect(arguments[0].to_i32(), arguments[1].to_i32(), arguments[2].to_i32(), arguments[3].to_i32());
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}
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return JS::js_undefined();
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});
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}
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CanvasRenderingContext2DWrapper::~CanvasRenderingContext2DWrapper()
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{
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}
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}
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}
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51
Libraries/LibWeb/Bindings/CanvasRenderingContext2DWrapper.h
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51
Libraries/LibWeb/Bindings/CanvasRenderingContext2DWrapper.h
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibWeb/Bindings/Wrapper.h>
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namespace Web {
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namespace Bindings {
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class CanvasRenderingContext2DWrapper : public Wrapper {
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public:
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explicit CanvasRenderingContext2DWrapper(CanvasRenderingContext2D&);
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virtual ~CanvasRenderingContext2DWrapper() override;
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CanvasRenderingContext2D& impl() { return m_impl; }
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const CanvasRenderingContext2D& impl() const { return m_impl; }
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private:
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virtual const char* class_name() const override { return "CanvasRenderingContext2DWrapper"; }
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NonnullRefPtr<CanvasRenderingContext2D> m_impl;
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};
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CanvasRenderingContext2DWrapper* wrap(JS::Heap&, CanvasRenderingContext2D&);
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}
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}
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67
Libraries/LibWeb/Bindings/HTMLCanvasElementWrapper.cpp
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67
Libraries/LibWeb/Bindings/HTMLCanvasElementWrapper.cpp
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Function.h>
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#include <LibJS/Runtime/PrimitiveString.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibWeb/Bindings/CanvasRenderingContext2DWrapper.h>
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#include <LibWeb/Bindings/HTMLCanvasElementWrapper.h>
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#include <LibWeb/DOM/CanvasRenderingContext2D.h>
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#include <LibWeb/DOM/HTMLCanvasElement.h>
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namespace Web {
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namespace Bindings {
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HTMLCanvasElementWrapper::HTMLCanvasElementWrapper(HTMLCanvasElement& element)
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: NodeWrapper(element)
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{
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put_native_function("getContext", [this](JS::Object*, const Vector<JS::Value>& arguments) -> JS::Value {
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if (arguments.size() >= 1) {
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dbg() << "Calling getContext on " << node().tag_name();
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auto* context = node().get_context(arguments[0].to_string());
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dbg() << "getContext got 2D context=" << context;
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return wrap(heap(), *context);
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}
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return JS::js_undefined();
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});
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}
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HTMLCanvasElementWrapper::~HTMLCanvasElementWrapper()
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{
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}
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HTMLCanvasElement& HTMLCanvasElementWrapper::node()
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{
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return static_cast<HTMLCanvasElement&>(NodeWrapper::node());
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}
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const HTMLCanvasElement& HTMLCanvasElementWrapper::node() const
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{
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return static_cast<const HTMLCanvasElement&>(NodeWrapper::node());
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}
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}
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}
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47
Libraries/LibWeb/Bindings/HTMLCanvasElementWrapper.h
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47
Libraries/LibWeb/Bindings/HTMLCanvasElementWrapper.h
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibWeb/Bindings/NodeWrapper.h>
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namespace Web {
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namespace Bindings {
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class HTMLCanvasElementWrapper : public NodeWrapper {
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public:
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explicit HTMLCanvasElementWrapper(HTMLCanvasElement&);
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virtual ~HTMLCanvasElementWrapper() override;
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HTMLCanvasElement& node();
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const HTMLCanvasElement& node() const;
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private:
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virtual const char* class_name() const override { return "HTMLCanvasElementWrapper"; }
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};
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}
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}
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@ -26,12 +26,25 @@
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#include <LibJS/Runtime/PrimitiveString.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibWeb/Bindings/DocumentWrapper.h>
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#include <LibWeb/Bindings/HTMLCanvasElementWrapper.h>
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#include <LibWeb/Bindings/NodeWrapper.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/HTMLCanvasElement.h>
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#include <LibWeb/DOM/Node.h>
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namespace Web {
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namespace Bindings {
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NodeWrapper* wrap(JS::Heap& heap, Node& node)
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{
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if (is<Document>(node))
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return static_cast<NodeWrapper*>(wrap_impl(heap, to<Document>(node)));
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if (is<HTMLCanvasElement>(node))
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return static_cast<NodeWrapper*>(wrap_impl(heap, to<HTMLCanvasElement>(node)));
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return static_cast<NodeWrapper*>(wrap_impl(heap, node));
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}
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NodeWrapper::NodeWrapper(Node& node)
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: EventTargetWrapper(node)
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{
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@ -43,5 +43,7 @@ private:
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virtual const char* class_name() const override { return "NodeWrapper"; }
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};
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NodeWrapper* wrap(JS::Heap&, Node&);
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}
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}
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@ -46,7 +46,7 @@ private:
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};
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template<class NativeObject>
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inline Wrapper* wrap(JS::Heap& heap, NativeObject& native_object)
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inline Wrapper* wrap_impl(JS::Heap& heap, NativeObject& native_object)
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{
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if (!native_object.wrapper())
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native_object.set_wrapper(*heap.allocate<typename NativeObject::WrapperType>(native_object));
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44
Libraries/LibWeb/DOM/CanvasRenderingContext2D.cpp
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44
Libraries/LibWeb/DOM/CanvasRenderingContext2D.cpp
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#include <AK/OwnPtr.h>
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#include <LibGfx/Painter.h>
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#include <LibWeb/DOM/CanvasRenderingContext2D.h>
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#include <LibWeb/DOM/HTMLCanvasElement.h>
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namespace Web {
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CanvasRenderingContext2D::CanvasRenderingContext2D(HTMLCanvasElement& element)
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: m_element(element.make_weak_ptr())
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{
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}
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CanvasRenderingContext2D::~CanvasRenderingContext2D()
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{
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}
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void CanvasRenderingContext2D::set_fill_style(String style)
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{
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m_fill_style = Gfx::Color::from_string(style).value_or(Color::Black);
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}
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String CanvasRenderingContext2D::fill_style() const
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{
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return m_fill_style.to_string();
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}
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void CanvasRenderingContext2D::fill_rect(int x, int y, int width, int height)
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{
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auto painter = this->painter();
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if (!painter)
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return;
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painter->fill_rect({ x, y, width, height }, m_fill_style);
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}
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OwnPtr<Gfx::Painter> CanvasRenderingContext2D::painter()
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{
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if (!m_element)
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return nullptr;
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return make<Gfx::Painter>(m_element->ensure_bitmap());
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}
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}
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38
Libraries/LibWeb/DOM/CanvasRenderingContext2D.h
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38
Libraries/LibWeb/DOM/CanvasRenderingContext2D.h
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#pragma once
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#include <AK/RefCounted.h>
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#include <LibGfx/Color.h>
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#include <LibGfx/Forward.h>
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#include <LibWeb/Bindings/Wrappable.h>
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namespace Web {
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class CanvasRenderingContext2D
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: public RefCounted<CanvasRenderingContext2D>
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, public Bindings::Wrappable {
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AK_MAKE_NONCOPYABLE(CanvasRenderingContext2D);
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AK_MAKE_NONMOVABLE(CanvasRenderingContext2D);
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public:
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using WrapperType = Bindings::CanvasRenderingContext2DWrapper;
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static NonnullRefPtr<CanvasRenderingContext2D> create(HTMLCanvasElement& element) { return adopt(*new CanvasRenderingContext2D(element)); }
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~CanvasRenderingContext2D();
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void set_fill_style(String);
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String fill_style() const;
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void fill_rect(int x, int y, int width, int height);
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private:
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explicit CanvasRenderingContext2D(HTMLCanvasElement&);
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OwnPtr<Gfx::Painter> painter();
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WeakPtr<HTMLCanvasElement> m_element;
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Gfx::Color m_fill_style;
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};
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}
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@ -29,6 +29,7 @@
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#include <LibWeb/DOM/HTMLBRElement.h>
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#include <LibWeb/DOM/HTMLBlinkElement.h>
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#include <LibWeb/DOM/HTMLBodyElement.h>
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#include <LibWeb/DOM/HTMLCanvasElement.h>
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#include <LibWeb/DOM/HTMLFontElement.h>
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#include <LibWeb/DOM/HTMLFormElement.h>
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#include <LibWeb/DOM/HTMLHRElement.h>
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}
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if (lowercase_tag_name == "script")
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return adopt(*new HTMLScriptElement(document, lowercase_tag_name));
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if (lowercase_tag_name == "canvas")
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return adopt(*new HTMLCanvasElement(document, lowercase_tag_name));
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return adopt(*new Element(document, lowercase_tag_name));
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}
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92
Libraries/LibWeb/DOM/HTMLCanvasElement.cpp
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92
Libraries/LibWeb/DOM/HTMLCanvasElement.cpp
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
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* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <LibGfx/Bitmap.h>
|
||||
#include <LibWeb/CSS/StyleResolver.h>
|
||||
#include <LibWeb/DOM/CanvasRenderingContext2D.h>
|
||||
#include <LibWeb/DOM/Document.h>
|
||||
#include <LibWeb/DOM/HTMLCanvasElement.h>
|
||||
#include <LibWeb/Layout/LayoutCanvas.h>
|
||||
|
||||
namespace Web {
|
||||
|
||||
HTMLCanvasElement::HTMLCanvasElement(Document& document, const String& tag_name)
|
||||
: HTMLElement(document, tag_name)
|
||||
{
|
||||
}
|
||||
|
||||
HTMLCanvasElement::~HTMLCanvasElement()
|
||||
{
|
||||
}
|
||||
|
||||
int HTMLCanvasElement::preferred_width() const
|
||||
{
|
||||
bool ok = false;
|
||||
int width = attribute("width").to_int(ok);
|
||||
if (ok)
|
||||
return width;
|
||||
|
||||
return 300;
|
||||
}
|
||||
|
||||
int HTMLCanvasElement::preferred_height() const
|
||||
{
|
||||
bool ok = false;
|
||||
int height = attribute("height").to_int(ok);
|
||||
if (ok)
|
||||
return height;
|
||||
|
||||
return 300;
|
||||
}
|
||||
|
||||
RefPtr<LayoutNode> HTMLCanvasElement::create_layout_node(const StyleProperties* parent_style) const
|
||||
{
|
||||
auto style = document().style_resolver().resolve_style(*this, parent_style);
|
||||
auto display = style->string_or_fallback(CSS::PropertyID::Display, "inline");
|
||||
if (display == "none")
|
||||
return nullptr;
|
||||
return adopt(*new LayoutCanvas(*this, move(style)));
|
||||
}
|
||||
|
||||
CanvasRenderingContext2D* HTMLCanvasElement::get_context(String type)
|
||||
{
|
||||
ASSERT(type.to_lowercase() == "2d");
|
||||
dbg() << "get_context with m_context=" << m_context.ptr();
|
||||
if (!m_context)
|
||||
m_context = CanvasRenderingContext2D::create(*this);
|
||||
dbg() << "get_context returning m_context=" << m_context.ptr();
|
||||
return m_context;
|
||||
}
|
||||
|
||||
Gfx::Bitmap& HTMLCanvasElement::ensure_bitmap()
|
||||
{
|
||||
if (!m_bitmap || m_bitmap->size() != Gfx::Size(preferred_width(), preferred_height())) {
|
||||
m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, { preferred_width(), preferred_height() });
|
||||
}
|
||||
return *m_bitmap;
|
||||
}
|
||||
|
||||
}
|
66
Libraries/LibWeb/DOM/HTMLCanvasElement.h
Normal file
66
Libraries/LibWeb/DOM/HTMLCanvasElement.h
Normal file
|
@ -0,0 +1,66 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <AK/ByteBuffer.h>
|
||||
#include <LibGfx/Forward.h>
|
||||
#include <LibWeb/DOM/HTMLElement.h>
|
||||
|
||||
namespace Web {
|
||||
|
||||
class LayoutDocument;
|
||||
|
||||
class HTMLCanvasElement : public HTMLElement {
|
||||
public:
|
||||
using WrapperType = Bindings::HTMLCanvasElementWrapper;
|
||||
|
||||
HTMLCanvasElement(Document&, const String& tag_name);
|
||||
virtual ~HTMLCanvasElement() override;
|
||||
|
||||
int preferred_width() const;
|
||||
int preferred_height() const;
|
||||
|
||||
const Gfx::Bitmap* bitmap() const { return m_bitmap; }
|
||||
Gfx::Bitmap& ensure_bitmap();
|
||||
|
||||
CanvasRenderingContext2D* get_context(String type);
|
||||
|
||||
private:
|
||||
virtual RefPtr<LayoutNode> create_layout_node(const StyleProperties* parent_style) const override;
|
||||
|
||||
RefPtr<Gfx::Bitmap> m_bitmap;
|
||||
RefPtr<CanvasRenderingContext2D> m_context;
|
||||
};
|
||||
|
||||
template<>
|
||||
inline bool is<HTMLCanvasElement>(const Node& node)
|
||||
{
|
||||
return is<Element>(node) && to<Element>(node).tag_name().to_lowercase() == "canvas";
|
||||
}
|
||||
|
||||
|
||||
}
|
|
@ -28,19 +28,24 @@
|
|||
|
||||
namespace Web {
|
||||
|
||||
class CanvasRenderingContext2D;
|
||||
class Document;
|
||||
class Element;
|
||||
class EventListener;
|
||||
class EventTarget;
|
||||
class Frame;
|
||||
class HTMLElement;
|
||||
class HTMLCanvasElement;
|
||||
class HtmlView;
|
||||
class Node;
|
||||
|
||||
namespace Bindings {
|
||||
|
||||
class CanvasRenderingContext2DWrapper;
|
||||
class DocumentWrapper;
|
||||
class EventListenerWrapper;
|
||||
class EventTargetWrapper;
|
||||
class HTMLCanvasElementWrapper;
|
||||
class NodeWrapper;
|
||||
class Wrappable;
|
||||
class Wrapper;
|
||||
|
|
64
Libraries/LibWeb/Layout/LayoutCanvas.cpp
Normal file
64
Libraries/LibWeb/Layout/LayoutCanvas.cpp
Normal file
|
@ -0,0 +1,64 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <LibGUI/Painter.h>
|
||||
#include <LibGfx/Font.h>
|
||||
#include <LibGfx/StylePainter.h>
|
||||
#include <LibWeb/Layout/LayoutCanvas.h>
|
||||
|
||||
namespace Web {
|
||||
|
||||
LayoutCanvas::LayoutCanvas(const HTMLCanvasElement& element, NonnullRefPtr<StyleProperties> style)
|
||||
: LayoutReplaced(element, move(style))
|
||||
{
|
||||
}
|
||||
|
||||
LayoutCanvas::~LayoutCanvas()
|
||||
{
|
||||
}
|
||||
|
||||
void LayoutCanvas::layout()
|
||||
{
|
||||
rect().set_width(node().preferred_width());
|
||||
rect().set_height(node().preferred_height());
|
||||
LayoutReplaced::layout();
|
||||
}
|
||||
|
||||
void LayoutCanvas::render(RenderingContext& context)
|
||||
{
|
||||
if (!is_visible())
|
||||
return;
|
||||
|
||||
// FIXME: This should be done at a different level. Also rect() does not include padding etc!
|
||||
if (!context.viewport_rect().intersects(enclosing_int_rect(rect())))
|
||||
return;
|
||||
|
||||
if (node().bitmap())
|
||||
context.painter().draw_scaled_bitmap(enclosing_int_rect(rect()), *node().bitmap(), node().bitmap()->rect());
|
||||
LayoutReplaced::render(context);
|
||||
}
|
||||
|
||||
}
|
57
Libraries/LibWeb/Layout/LayoutCanvas.h
Normal file
57
Libraries/LibWeb/Layout/LayoutCanvas.h
Normal file
|
@ -0,0 +1,57 @@
|
|||
/*
|
||||
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <LibWeb/DOM/HTMLCanvasElement.h>
|
||||
#include <LibWeb/Layout/LayoutReplaced.h>
|
||||
|
||||
namespace Web {
|
||||
|
||||
class HTMLCanvasElement;
|
||||
|
||||
class LayoutCanvas : public LayoutReplaced {
|
||||
public:
|
||||
LayoutCanvas(const HTMLCanvasElement&, NonnullRefPtr<StyleProperties>);
|
||||
virtual ~LayoutCanvas() override;
|
||||
|
||||
virtual void layout() override;
|
||||
virtual void render(RenderingContext&) override;
|
||||
|
||||
const HTMLCanvasElement& node() const { return static_cast<const HTMLCanvasElement&>(LayoutReplaced::node()); }
|
||||
|
||||
private:
|
||||
virtual const char* class_name() const override { return "LayoutCanvas"; }
|
||||
virtual bool is_canvas() const override { return true; }
|
||||
};
|
||||
|
||||
template<>
|
||||
inline bool is<LayoutCanvas>(const LayoutNode& node)
|
||||
{
|
||||
return node.is_canvas();
|
||||
}
|
||||
|
||||
}
|
|
@ -87,6 +87,7 @@ public:
|
|||
virtual bool is_replaced() const { return false; }
|
||||
virtual bool is_widget() const { return false; }
|
||||
virtual bool is_image() const { return false; }
|
||||
virtual bool is_canvas() const { return false; }
|
||||
virtual bool is_box() const { return false; }
|
||||
virtual bool is_table() const { return false; }
|
||||
virtual bool is_table_row() const { return false; }
|
||||
|
|
|
@ -1,7 +1,9 @@
|
|||
LIBWEB_OBJS = \
|
||||
Bindings/CanvasRenderingContext2DWrapper.o \
|
||||
Bindings/DocumentWrapper.o \
|
||||
Bindings/EventListenerWrapper.o \
|
||||
Bindings/EventTargetWrapper.o \
|
||||
Bindings/HTMLCanvasElementWrapper.o \
|
||||
Bindings/NodeWrapper.o \
|
||||
Bindings/Wrappable.o \
|
||||
CSS/DefaultStyleSheetSource.o \
|
||||
|
@ -14,6 +16,7 @@ LIBWEB_OBJS = \
|
|||
CSS/StyleRule.o \
|
||||
CSS/StyleSheet.o \
|
||||
CSS/StyleValue.o \
|
||||
DOM/CanvasRenderingContext2D.o \
|
||||
DOM/CharacterData.o \
|
||||
DOM/Comment.o \
|
||||
DOM/Document.o \
|
||||
|
@ -26,6 +29,7 @@ LIBWEB_OBJS = \
|
|||
DOM/HTMLBRElement.o \
|
||||
DOM/HTMLBlinkElement.o \
|
||||
DOM/HTMLBodyElement.o \
|
||||
DOM/HTMLCanvasElement.o \
|
||||
DOM/HTMLElement.o \
|
||||
DOM/HTMLFontElement.o \
|
||||
DOM/HTMLFormElement.o \
|
||||
|
@ -52,6 +56,7 @@ LIBWEB_OBJS = \
|
|||
Layout/LayoutBlock.o \
|
||||
Layout/LayoutBox.o \
|
||||
Layout/LayoutBreak.o \
|
||||
Layout/LayoutCanvas.o \
|
||||
Layout/LayoutDocument.o \
|
||||
Layout/LayoutImage.o \
|
||||
Layout/LayoutInline.o \
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue