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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/ByteBuffer.h>
28#include <LibGfx/Bitmap.h>
29#include <LibGfx/PNGLoader.h>
30#include <LibHTML/CSS/StyleValue.h>
31#include <LibHTML/DOM/Document.h>
32#include <LibHTML/Frame.h>
33#include <LibHTML/ResourceLoader.h>
34
35StyleValue::StyleValue(Type type)
36 : m_type(type)
37{
38}
39
40StyleValue::~StyleValue()
41{
42}
43
44String IdentifierStyleValue::to_string() const
45{
46 switch (id()) {
47 case CSS::ValueID::Invalid:
48 return "(invalid)";
49 case CSS::ValueID::VendorSpecificLink:
50 return "-libhtml-link";
51 default:
52 ASSERT_NOT_REACHED();
53 }
54}
55
56Color IdentifierStyleValue::to_color(const Document& document) const
57{
58 if (id() == CSS::ValueID::VendorSpecificLink)
59 return document.link_color();
60 return {};
61}
62
63ImageStyleValue::ImageStyleValue(const URL& url, Document& document)
64 : StyleValue(Type::Image)
65 , m_url(url)
66 , m_document(document.make_weak_ptr())
67{
68 NonnullRefPtr<ImageStyleValue> protector(*this);
69 ResourceLoader::the().load(url, [this, protector](auto& data) {
70 if (!m_document)
71 return;
72 m_bitmap = Gfx::load_png_from_memory(data.data(), data.size());
73 if (!m_bitmap)
74 return;
75 // FIXME: Do less than a full repaint if possible?
76 m_document->frame()->set_needs_display({});
77 });
78}