src/compositor/wayland_wrapper/wlsubsurface.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
   4 ** Contact: http://www.qt-project.org/legal
   5 **
   6 ** This file is part of the Qt Compositor.
   7 **
   8 ** $QT_BEGIN_LICENSE:BSD$
   9 ** You may use this file under the terms of the BSD license as follows:
  10 **
  11 ** "Redistribution and use in source and binary forms, with or without
  12 ** modification, are permitted provided that the following conditions are
  13 ** met:
  14 **   * Redistributions of source code must retain the above copyright
  15 **     notice, this list of conditions and the following disclaimer.
  16 **   * Redistributions in binary form must reproduce the above copyright
  17 **     notice, this list of conditions and the following disclaimer in
  18 **     the documentation and/or other materials provided with the
  19 **     distribution.
  20 **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
  21 **     of its contributors may be used to endorse or promote products derived
  22 **     from this software without specific prior written permission.
  23 **
  24 **
  25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
  36 **
  37 ** $QT_END_LICENSE$
  38 **
  39 ****************************************************************************/
  40
  41 #include "wlsubsurface.h"
  42
  43 #include "wlcompositor.h"
  44 #include "waylandsurface.h"
  45
  46 namespace Wayland {
  47
  48 SubSurfaceExtensionGlobal::SubSurfaceExtensionGlobal(Compositor *compositor)
  49     : m_compositor(compositor)
  50 {
  51     wl_display_add_global(m_compositor->wl_display(),
  52                           &wl_sub_surface_extension_interface,
  53                           this,
  54                           SubSurfaceExtensionGlobal::bind_func);
  55 }
  56
  57 void SubSurfaceExtensionGlobal::bind_func(wl_client *client, void *data, uint32_t version, uint32_t id)
  58 {
  59     Q_UNUSED(version);
  60     wl_client_add_object(client, &wl_sub_surface_extension_interface,&sub_surface_extension_interface,id,data);
  61 }
  62
  63 void SubSurfaceExtensionGlobal::get_sub_surface_aware_surface(wl_client *client, wl_resource *sub_surface_extension_resource, uint32_t id, wl_resource *surface_resource)
  64 {
  65     Q_UNUSED(sub_surface_extension_resource);
  66     Surface *surface = resolve<Surface>(surface_resource);
  67     new SubSurface(client,id,surface);
  68 }
  69
  70 const struct wl_sub_surface_extension_interface SubSurfaceExtensionGlobal::sub_surface_extension_interface = {
  71     SubSurfaceExtensionGlobal::get_sub_surface_aware_surface
  72 };
  73
  74 SubSurface::SubSurface(wl_client *client, uint32_t id, Surface *surface)
  75     : m_surface(surface)
  76     , m_parent(0)
  77 {
  78     surface->setSubSurface(this);
  79     m_sub_surface_resource = wl_client_add_object(client,
  80                                                        &wl_sub_surface_interface,
  81                                                        &sub_surface_interface,
  82                                                        id,
  83                                                        this);
  84 }
  85
  86 SubSurface::~SubSurface()
  87 {
  88     if (m_parent) {
  89         m_parent->removeSubSurface(this);
  90     }
  91     QLinkedList<WaylandSurface *>::iterator it;
  92     for (it = m_sub_surfaces.begin(); it != m_sub_surfaces.end(); ++it) {
  93         (*it)->handle()->subSurface()->parentDestroyed();
  94     }
  95 }
  96
  97 void SubSurface::setSubSurface(SubSurface *subSurface, int x, int y)
  98 {
  99     if (!m_sub_surfaces.contains(subSurface->m_surface->waylandSurface())) {
 100         m_sub_surfaces.append(subSurface->m_surface->waylandSurface());
 101         subSurface->setParent(this);
 102     }
 103     subSurface->m_surface->setPos(QPointF(x,y));
 104 }
 105
 106 void SubSurface::removeSubSurface(SubSurface *subSurfaces)
 107 {
 108     Q_ASSERT(m_sub_surfaces.contains(subSurfaces->m_surface->waylandSurface()));
 109     m_sub_surfaces.removeOne(subSurfaces->m_surface->waylandSurface());
 110 }
 111
 112 SubSurface *SubSurface::parent() const
 113 {
 114     return m_parent;
 115 }
 116
 117 void SubSurface::setParent(SubSurface *parent)
 118 {
 119     if (m_parent == parent)
 120         return;
 121
 122     WaylandSurface *oldParent = 0;
 123     WaylandSurface *newParent = 0;
 124
 125     if (m_parent) {
 126         oldParent = m_parent->m_surface->waylandSurface();
 127         m_parent->removeSubSurface(this);
 128     }
 129     if (parent) {
 130         newParent = parent->m_surface->waylandSurface();
 131     }
 132     m_parent = parent;
 133
 134     m_surface->waylandSurface()->parentChanged(newParent,oldParent);
 135 }
 136
 137 QLinkedList<WaylandSurface *> SubSurface::subSurfaces() const
 138 {
 139     return m_sub_surfaces;
 140 }
 141
 142 void SubSurface::parentDestroyed()
 143 {
 144     m_parent = 0;
 145 }
 146 void SubSurface::attach_sub_surface(wl_client *client, wl_resource *sub_surface_parent_resource, wl_resource *sub_surface_child_resource, int32_t x, int32_t y)
 147 {
 148     Q_UNUSED(client);
 149     SubSurface *parent_sub_surface = static_cast<SubSurface *>(sub_surface_parent_resource->data);
 150     SubSurface *child_sub_surface = static_cast<SubSurface *>(sub_surface_child_resource->data);
 151     parent_sub_surface->setSubSurface(child_sub_surface,x,y);
 152 }
 153
 154 void SubSurface::move_sub_surface(wl_client *client, wl_resource *sub_surface_parent_resource, wl_resource *sub_surface_child_resource, int32_t x, int32_t y)
 155 {
 156     Q_UNUSED(client);
 157     Q_UNUSED(x);
 158     Q_UNUSED(y);
 159     SubSurface *parent_sub_surface = static_cast<SubSurface *>(sub_surface_parent_resource->data);
 160     SubSurface *child_sub_surface = static_cast<SubSurface *>(sub_surface_child_resource->data);
 161     Q_UNUSED(parent_sub_surface);
 162     Q_UNUSED(child_sub_surface);
 163 }
 164
 165 void SubSurface::raise(wl_client *client, wl_resource *sub_surface_parent_resource, wl_resource *sub_surface_child_resource)
 166 {
 167     Q_UNUSED(client);
 168     Q_UNUSED(sub_surface_parent_resource);
 169     Q_UNUSED(sub_surface_child_resource);
 170 }
 171
 172 void SubSurface::lower(wl_client *client, wl_resource *sub_surface_parent_resource, wl_resource *sub_surface_child_resource)
 173 {
 174     Q_UNUSED(client);
 175     Q_UNUSED(sub_surface_parent_resource);
 176     Q_UNUSED(sub_surface_child_resource);
 177 }
 178
 179 const struct wl_sub_surface_interface SubSurface::sub_surface_interface = {
 180     SubSurface::attach_sub_surface,
 181     SubSurface::move_sub_surface,
 182     SubSurface::raise,
 183     SubSurface::lower
 184 };
 185
 186 }