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fbd760379a
We still use a Gfx::ImageDecoder for GIF images, but there's no need for the ImageLoader object to have its own pointer to it. Just grab the ImageDecoder from the ImageResource when needed.
103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/*
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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 <LibGfx/Bitmap.h>
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#include <LibGfx/ImageDecoder.h>
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#include <LibImageDecoderClient/Client.h>
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#include <LibWeb/Loader/ImageResource.h>
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namespace Web {
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ImageResource::ImageResource(const LoadRequest& request)
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: Resource(Type::Image, request)
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{
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}
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ImageResource::~ImageResource()
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{
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}
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bool ImageResource::should_decode_in_process() const
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{
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return mime_type() == "image/gif";
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}
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Gfx::ImageDecoder& ImageResource::ensure_decoder()
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{
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if (!m_decoder)
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m_decoder = Gfx::ImageDecoder::create(encoded_data());
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return *m_decoder;
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}
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const Gfx::Bitmap* ImageResource::bitmap(size_t frame_index) const
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{
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if (!has_encoded_data())
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return nullptr;
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if (should_decode_in_process()) {
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if (!m_decoder)
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return nullptr;
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if (m_decoder->is_animated())
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return m_decoder->frame(frame_index).image;
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return m_decoder->bitmap();
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}
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if (!m_decoded_image && !m_has_attempted_decode) {
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auto image_decoder_client = ImageDecoderClient::Client::construct();
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m_decoded_image = image_decoder_client->decode_image(encoded_data());
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m_has_attempted_decode = true;
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}
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return m_decoded_image;
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}
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void ImageResource::update_volatility()
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{
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if (!m_decoder)
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return;
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bool visible_in_viewport = false;
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for_each_client([&](auto& client) {
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if (static_cast<const ImageResourceClient&>(client).is_visible_in_viewport())
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visible_in_viewport = true;
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});
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if (!visible_in_viewport) {
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m_decoder->set_volatile();
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return;
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}
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bool still_has_decoded_image = m_decoder->set_nonvolatile();
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if (still_has_decoded_image)
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return;
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m_decoder = nullptr;
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}
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ImageResourceClient::~ImageResourceClient()
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{
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}
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}
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