| /* |
| * Copyright (C) 2012 Adobe Systems Incorporated. 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 HOLDER “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 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 "config.h" |
| #include "platform/graphics/filters/custom/CustomFilterProgram.h" |
| |
| #include "platform/graphics/filters/custom/CustomFilterProgramClient.h" |
| |
| namespace WebCore { |
| |
| CustomFilterProgram::CustomFilterProgram(CustomFilterProgramType programType, const CustomFilterProgramMixSettings& mixSettings, CustomFilterMeshType meshType) |
| : m_programType(programType) |
| , m_mixSettings(mixSettings) |
| , m_meshType(meshType) |
| { |
| // Keep the constructor protected to prevent creating this object directly. |
| } |
| |
| CustomFilterProgram::~CustomFilterProgram() |
| { |
| // All the clients should keep a reference to this object. |
| ASSERT(m_clients.isEmpty()); |
| } |
| |
| void CustomFilterProgram::addClient(CustomFilterProgramClient* client) |
| { |
| if (m_clients.isEmpty()) { |
| // Notify the StyleCustomFilterProgram that we now have at least a client |
| // and the loading can begin. |
| // Note: If the shader is already cached the first client will be notified, |
| // even if the filter was already built. Add the client only after notifying |
| // the cache about them, so that we avoid a useless recreation of the filters chain. |
| willHaveClients(); |
| } |
| m_clients.add(client); |
| } |
| |
| void CustomFilterProgram::removeClient(CustomFilterProgramClient* client) |
| { |
| m_clients.remove(client); |
| if (m_clients.isEmpty()) { |
| // We have no clients anymore, the cached resources can be purged from memory. |
| didRemoveLastClient(); |
| } |
| } |
| |
| void CustomFilterProgram::notifyClients() |
| { |
| for (CustomFilterProgramClientList::iterator iter = m_clients.begin(), end = m_clients.end(); iter != end; ++iter) |
| iter->key->notifyCustomFilterProgramLoaded(this); |
| } |
| |
| CustomFilterProgramInfo CustomFilterProgram::programInfo() const |
| { |
| ASSERT(isLoaded()); |
| return CustomFilterProgramInfo(vertexShaderString(), fragmentShaderString(), m_programType, m_mixSettings, m_meshType); |
| } |
| |
| } // namespace WebCore |