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path: root/src/wm_layer_control.cpp
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/*
 * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <assert.h>
#include <unistd.h>
#include "wm_layer_control.hpp"
#include "wm_layer.hpp"
#include "wm_client.hpp"
#include "request.hpp"
#include "json_helper.hpp"

#define LC_AREA_PATH "/etc/areas.db"
#define LC_LAYER_SETTING_PATH "/etc/layers_setting.json"
#define LC_DEFAULT_AREA "fullscreen"

using std::string;
using std::vector;
using std::shared_ptr;

namespace wm {

LayerControl* g_lc_ctxt;

static void createCallback_static(ilmObjectType object,
                            t_ilm_uint id,
                            t_ilm_bool created,
                            void* data)
{
    static_cast<LayerControl*>(data)->dispatchCreateEvent(object, id, created);
}

static void surfaceCallback_static(t_ilm_surface surface,
            struct ilmSurfaceProperties* surface_prop,
            t_ilm_notification_mask mask)
{
    g_lc_ctxt->dispatchPropertyChangeEvent(surface, surface_prop, mask);
}

static void layerCallback_static(t_ilm_layer layer,
            struct ilmLayerProperties* layer_prop,
            t_ilm_notification_mask mask)
{
    g_lc_ctxt->dispatchPropertyChangeEvent(layer, layer_prop, mask);
}

LayerControl::LayerControl(const std::string& root)
{
    string area_path = root + LC_AREA_PATH;
    string layer_path= root + LC_LAYER_SETTING_PATH;
    // load layers.setting.json
    WMError ret = this->loadLayerSetting(layer_path);
    assert(ret == WMError::SUCCESS);
    // load area.db
    ret = this->loadAreaDb(area_path);
    assert(ret == WMError::SUCCESS);
}

WMError LayerControl::init(const LayerControlCallbacks& cb)
{
    HMI_DEBUG("Initialize of ilm library and display");
    t_ilm_uint num = 0;
    t_ilm_uint *ids;
    int cnt = 0;
    ilmErrorTypes rc = ilm_init();

    while (rc != ILM_SUCCESS)
    {
        cnt++;
        if (20 <= cnt)
        {
            HMI_ERROR("Could not connect to compositor");
            goto lc_init_error;
        }
        HMI_ERROR("Wait to start weston ...");
        sleep(1);
        rc = ilm_init();
    }
    if(rc != ILM_SUCCESS) goto lc_init_error;

    // Get current screen setting
    rc = ilm_getScreenIDs(&num, &ids);

    if(rc != ILM_SUCCESS) goto lc_init_error;

    for(unsigned i = 0; i < num; i++)
    {
        HMI_INFO("get screen: %d", ids[i]);
    }
    // Currently, 0 is only available
    this->screenID = ids[0];

    rc = ilm_getPropertiesOfScreen(this->screenID, &this->screen_prop);

    if(rc != ILM_SUCCESS) goto lc_init_error;

    // Register Callback from ILM
    this->cb = cb;
    ilm_registerNotification(createCallback_static, this);

    return WMError::SUCCESS;

lc_init_error:
    HMI_ERROR("Failed to initialize. Terminate WM");

    return WMError::FAIL;
}

void LayerControl::createNewLayer(unsigned id)
{
    HMI_INFO("create new ID :%d", id);
    struct rect rct = this->area2size[LC_DEFAULT_AREA];
    ilm_layerCreateWithDimension(&id, rct.w, rct.h);
    //ilm_layerSetSourceRectangle(id, rct.x, rct.y, rct.w, rct.h);
    //ilm_layerSetDestinationRectangle(id, rct.x, rct.y, rct.w, rct.h);
    ilm_layerSetOpacity(id, 1.0);
    ilm_layerSetVisibility(id, ILM_FALSE);
    ilm_commitChanges();
    auto wm_layer = getWMLayer(id);
    wm_layer->addLayer(id);
    this->commitChange();
}

unsigned LayerControl::getNewLayerID(const string& role, string* layer_name)
{
    unsigned ret = 0;
    for(const auto& l: this->wm_layers)
    {
        ret = l->getNewLayerID(role);
        if(ret != 0)
        {
            *layer_name = l->layerName();
            unsigned uid = l->getUuid();
            this->lid2wmlid[ret] = uid;
            break;
        }
    }
    return ret;
}

shared_ptr<WMLayer> LayerControl::getWMLayer(unsigned layer)
{
    unsigned uuid = this->lid2wmlid[layer];
    return this->wm_layers[uuid];
}

struct rect LayerControl::getAreaSize(const std::string& area)
{
    return area2size[area];
}

void LayerControl::setupArea(const rectangle& base_rct, double scaling)
{
    struct rect rct;
    this->scaling = scaling;

    rct = this->area2size["normal.full"];
    this->area2size["normalfull"] = rct;
    this->area2size["normal"] = rct;

    for (auto &i : this->area2size)
    {
        i.second.x = base_rct.left() + static_cast<int>(scaling * i.second.x + 0.5);
        i.second.y = base_rct.top() + static_cast<int>(scaling * i.second.y + 0.5);
        i.second.w = static_cast<int>(scaling * i.second.w + 0.5);
        i.second.h = static_cast<int>(scaling * i.second.h + 0.5);

        HMI_DEBUG("area:%s size(after) : x:%d y:%d w:%d h:%d",
            i.first.c_str(), i.second.x, i.second.y, i.second.w, i.second.h);
    }
}

Screen LayerControl::getScreenInfo()
{
    return Screen(this->screen_prop.screenWidth, this->screen_prop.screenHeight);
}

double LayerControl::scale()
{
    return this->scaling;
}

WMError LayerControl::updateLayer(LayerState& layer_state)
{
    return WMError::SUCCESS;
}

WMError LayerControl::commitChange()
{
    HMI_INFO("Commit change");
    WMError rc = WMError::SUCCESS;
    vector<unsigned> ivi_l_ids;
    for(auto& l : this->wm_layers)
    {
        auto state = l->getLayerState();
        for(const auto& id : state.getIviIdList())
        {
            ivi_l_ids.push_back(id);
        }
    }
    t_ilm_layer* id_array = new t_ilm_layer[ivi_l_ids.size()];
    if(id_array == nullptr)
    {
        HMI_WARNING("short memory");
        this->undoUpdate();
        return WMError::FAIL;
    }
    int count = 0;
    for(const auto& i : ivi_l_ids)
    {
        id_array[count] = i;
        HMI_DEBUG("check render order %d", i);
        ++count;
    }

    ilmErrorTypes ret = ilm_displaySetRenderOrder(this->screenID, id_array, ivi_l_ids.size());
    if(ret != ILM_SUCCESS)
    {
        this->undoUpdate();
        rc = WMError::FAIL;
    }
    ilm_commitChanges();
    delete id_array;
    return rc;
}

void LayerControl::undoUpdate() {}

WMError LayerControl::loadLayerSetting(const string &path)
{
    HMI_DEBUG("loading WMLayer(Application Containers) Setting from %s", path);

    json_object *json_obj, *json_cfg;
    int ret = jh::inputJsonFilie(path.c_str(), &json_obj);
    if (0 > ret)
    {
        HMI_DEBUG("Could not open %s, so use default area information", path.c_str());
        return WMError::FAIL;
    }
    HMI_INFO("json_obj dump:%s", json_object_get_string(json_obj));

    if (!json_object_object_get_ex(json_obj, "mappings", &json_cfg))
    {
        HMI_ERROR("Parse Error!!");
        return WMError::FAIL;
    }

    int len = json_object_array_length(json_cfg);
    HMI_DEBUG("json_cfg len:%d", len);

    for (int i = 0; i < len; i++)
    {
        json_object *json_tmp = json_object_array_get_idx(json_cfg, i);
        HMI_DEBUG("> json_tmp dump:%s", json_object_get_string(json_tmp));

        this->wm_layers.emplace_back(std::make_shared<WMLayer>(json_tmp, i));
    }
    json_object_put(json_obj);

    return WMError::SUCCESS;
}

WMError LayerControl::loadAreaDb(const std::string& path)
{
    // Load area.db
    json_object *json_obj;
    int ret = jh::inputJsonFilie(path.c_str(), &json_obj);
    if (0 > ret)
    {
        HMI_DEBUG("Could not open %s, so use default area information", path.c_str());
        return WMError::FAIL;
    }
    HMI_INFO("json_obj dump:%s", json_object_get_string(json_obj));

    // Perse areas
    json_object *json_cfg;
    if (!json_object_object_get_ex(json_obj, "areas", &json_cfg))
    {
        HMI_ERROR("Parse Error!!");
        return WMError::FAIL;
    }

    int len = json_object_array_length(json_cfg);
    HMI_DEBUG("json_cfg len:%d", len);

    const char *area;
    for (int i = 0; i < len; i++)
    {
        json_object *json_tmp = json_object_array_get_idx(json_cfg, i);
        HMI_DEBUG("> json_tmp dump:%s", json_object_get_string(json_tmp));

        area = jh::getStringFromJson(json_tmp, "name");
        if (nullptr == area)
        {
            HMI_ERROR("Parse Error!!");
            return WMError::FAIL;
        }
        HMI_DEBUG("> area:%s", area);

        json_object *json_rect;
        if (!json_object_object_get_ex(json_tmp, "rect", &json_rect))
        {
            HMI_ERROR("Parse Error!!");
            return WMError::FAIL;
        }
        HMI_DEBUG("> json_rect dump:%s", json_object_get_string(json_rect));

        struct rect area_size;
        area_size.x = jh::getIntFromJson(json_rect, "x");
        area_size.y = jh::getIntFromJson(json_rect, "y");
        area_size.w = jh::getIntFromJson(json_rect, "w");
        area_size.h = jh::getIntFromJson(json_rect, "h");

        this->area2size[area] = area_size;
    }

    // Check
    for (const auto& itr : this->area2size)
    {
        HMI_DEBUG("area:%s x:%d y:%d w:%d h:%d",
                  itr.first.c_str(), itr.second.x, itr.second.y,
                  itr.second.w, itr.second.h);
    }

    // Release json_object
    json_object_put(json_obj);

    return WMError::SUCCESS;
}

WMError LayerControl::layoutChange(const WMAction& action)
{
    if (action.visible == TaskVisible::INVISIBLE)
    {
        // Visibility is not change -> no redraw is required
        return WMError::SUCCESS;
    }
    if(action.client == nullptr)
    {
        HMI_SEQ_ERROR(action.req_num, "client may vanish");
        return WMError::NOT_REGISTERED;
    }
    unsigned layer = action.client->layerID();

    // Layout Manager
    // WMError ret = this->setLayerSize(layer, action.area);
    auto rect = this->getAreaSize(action.area);
    HMI_DEBUG("Set layout %d, %d, %d, %d",rect.x, rect.y, rect.w, rect.h);
    ilm_layerSetSourceRectangle(layer, 0, 0, rect.w, rect.h);
    ilm_layerSetDestinationRectangle(layer, rect.x, rect.y, rect.w, rect.h);
    for(auto &wm_layer: this->wm_layers)
    {
        if(wm_layer->hasLayerID(layer))
        {
            LayerState ls = wm_layer->getLayerState();
            ls.setArea(action.client->appID(), action.area);
        }
    }

    return WMError::SUCCESS;
}

WMError LayerControl::visibilityChange(const WMAction& action)
{
    WMError ret = WMError::FAIL;
    if(action.client == nullptr)
    {
        HMI_SEQ_ERROR(action.req_num, "client may vanish");
        return WMError::NOT_REGISTERED;
    }

    if (action.visible == TaskVisible::VISIBLE)
    {
        ret = this->makeVisible(action.client);
    }
    else if (action.visible == TaskVisible::INVISIBLE)
    {
        ret = this->makeInvisible(action.client);
    }
    return ret;
}

void LayerControl::dispatchCreateEvent(ilmObjectType object, unsigned id, bool created)
{
    if (ILM_SURFACE == object)
    {
        if (created)
        {
            ilmSurfaceProperties sp;
            ilmErrorTypes rc;
            rc = ilm_getPropertiesOfSurface(id, &sp);
            if(rc != ILM_SUCCESS)
                return;
            this->cb.surfaceCreated(sp.creatorPid, id);
            ilm_surfaceAddNotification(id, surfaceCallback_static);
            ilm_surfaceSetVisibility(id, ILM_TRUE);
        }
        else
        {
            this->cb.surfaceDestroyed(id);
        }
    }
    if (ILM_LAYER == object)
    {
        if(created)
        {
            ilm_layerAddNotification(id, layerCallback_static);
            // this->cb->layerCreated(id);
        }
        else
        {
            // this->cb->layerDestroyed(id); // Means Application is dead.
        }
    }
}

void LayerControl::dispatchPropertyChangeEvent(unsigned id,
        struct ilmSurfaceProperties* sprop,
        t_ilm_notification_mask mask)
{
    pid_t pid = sprop->creatorPid;
    HMI_DEBUG("pid : %d", pid);

    if (ILM_NOTIFICATION_VISIBILITY & mask)
    {
        //this->cb->surfaceVisibilityChanged(id, sprop->visibility);
    }
    if (ILM_NOTIFICATION_OPACITY & mask)
    {
    }
    if (ILM_NOTIFICATION_ORIENTATION & mask)
    {
    }
    if (ILM_NOTIFICATION_SOURCE_RECT & mask)
    {
        // this->cb->surfaceSourceRectChanged(id, )
    }
    if (ILM_NOTIFICATION_DEST_RECT & mask)
    {
        // this->cb->surfaceSourceRectChanged(id, )
    }
    if (ILM_NOTIFICATION_CONTENT_AVAILABLE & mask)
    {
    }
    if (ILM_NOTIFICATION_CONTENT_REMOVED & mask)
    {
        /* application being down */
        // m_appLayers.remove(pid);
    }
    if (ILM_NOTIFICATION_CONFIGURED & mask)
    {
        HMI_DEBUG("surface %d available", id);
        ilm_surfaceSetSourceRectangle(id, 0, 0, sprop->origSourceWidth, sprop->origSourceHeight);
        ilm_surfaceSetDestinationRectangle(id, 0, 0, sprop->origSourceWidth, sprop->origSourceHeight);
        /* qDebug("ILM_NOTIFICATION_CONFIGURED");
        qDebug("  surfaceProperties %d", surface);
        qDebug("    surfaceProperties.origSourceWidth: %d", surfaceProperties->origSourceWidth);
        qDebug("    surfaceProperties.origSourceHeight: %d", surfaceProperties->origSourceHeight);

        if (surface == WINDOWMANAGER_HOMESCREEN_MAIN_SURFACE_ID) {
            addSurfaceToLayer(surface, WINDOWMANAGER_LAYER_HOMESCREEN);
            configureHomeScreenMainSurface(surface, surfaceProperties->origSourceWidth, surfaceProperties->origSourceHeight);
        } else {
            ilmErrorTypes result;
            t_ilm_layer layer = addSurfaceToAppLayer(pid, surface);

            if (layer != 0) {
                configureAppSurface(surface,
                                    surfaceProperties->origSourceWidth,
                                    surfaceProperties->origSourceHeight);

                result = ilm_layerAddSurface(layer, surface);
                if (result != ILM_SUCCESS) {
                    qDebug("ilm_layerAddSurface(%d,%d) failed.", layer, surface);
                }
                ilm_commitChanges();
            }
        }
        updateScreen(); */
    }
}

void LayerControl::dispatchPropertyChangeEvent(unsigned id,
        struct ilmLayerProperties* lprop,
        t_ilm_notification_mask mask)
{
    if (ILM_NOTIFICATION_VISIBILITY & mask)
    {
        //this->cb->layerVisibilityChanged(id, sprop->visibility);
    }
    if (ILM_NOTIFICATION_OPACITY & mask)
    {
    }
    if (ILM_NOTIFICATION_ORIENTATION & mask)
    {
    }
    if (ILM_NOTIFICATION_SOURCE_RECT & mask)
    {
        // this->cb->surfaceSourceRectChanged(id, )
    }
    if (ILM_NOTIFICATION_DEST_RECT & mask)
    {
        // this->cb->surfaceSourceRectChanged(id, )
    }
    if (ILM_NOTIFICATION_CONTENT_AVAILABLE & mask)
    {
    }
    if (ILM_NOTIFICATION_CONTENT_REMOVED & mask)
    {
        /* application being down */
        // m_appLayers.remove(pid);
    }
    if (ILM_NOTIFICATION_CONFIGURED & mask)
    {
        /* qDebug("ILM_NOTIFICATION_CONFIGURED");
        qDebug("  surfaceProperties %d", surface);
        qDebug("    surfaceProperties.origSourceWidth: %d", surfaceProperties->origSourceWidth);
        qDebug("    surfaceProperties.origSourceHeight: %d", surfaceProperties->origSourceHeight);

        if (surface == WINDOWMANAGER_HOMESCREEN_MAIN_SURFACE_ID) {
            addSurfaceToLayer(surface, WINDOWMANAGER_LAYER_HOMESCREEN);
            configureHomeScreenMainSurface(surface, surfaceProperties->origSourceWidth, surfaceProperties->origSourceHeight);
        } else {
            ilmErrorTypes result;
            t_ilm_layer layer = addSurfaceToAppLayer(pid, surface);

            if (layer != 0) {
                configureAppSurface(surface,
                                    surfaceProperties->origSourceWidth,
                                    surfaceProperties->origSourceHeight);

                result = ilm_layerAddSurface(layer, surface);
                if (result != ILM_SUCCESS) {
                    qDebug("ilm_layerAddSurface(%d,%d) failed.", layer, surface);
                }
                ilm_commitChanges();
            }
        }
        updateScreen(); */
    }
}

WMError LayerControl::makeVisible(const shared_ptr<WMClient> client)
{
    WMError ret = WMError::SUCCESS;
    // Don't check here the client is not nullptr
    unsigned layer = client->layerID();

    ilm_layerSetVisibility(layer, ILM_TRUE);

    /* for(auto& wm_layer : this->wm_layers)
    {
        if(wm_layer->hasLayerID(layer))
        {
            LayerState ls = wm_layer->getLayerState();
            ls.addLayer(layer);;
        }
    } */

    // Move foreground from back ground layer
    /* for(auto& wm_layer : this->wm_layers)
    {
        if(wm_layer->layerName() == "BackGroundLayer")
        {
            if(wm_layer->hasRole(client->role()))
            {
                LayerState ls = wm_layer->getLayerState();
                ls.removeLayer(layer);
            }
            break;
        }
    } */

    return ret;
}

WMError LayerControl::makeInvisible(const shared_ptr<WMClient> client)
{
    WMError ret = WMError::SUCCESS;
    unsigned layer = client->layerID(); // Don't check here the client is not nullptr

    /* bool mv_ok = this->mvBackGround(client);

    if(!mv_ok)
    {
        ilm_layerSetVisibility(layer, ILM_FALSE);
    } */

    ilm_layerSetDestinationRectangle(layer, 0, 0, 0, 0);

    /* for(auto& wm_layer : this->wm_layers)
    {
        if(wm_layer->hasLayerID(layer))
        {
            LayerState ls = wm_layer->getLayerState();
            ls.removeLayer(layer);;
        }
    } */



    return ret;
}

/* bool LayerControl::mvBackGround(const shared_ptr<WMClient> client)
{
    bool ret = false;

    // Move background from foreground layer
    auto bg = this->getWMLayer("BackGroundLayer");
    if(bg != nullptr)
    {
        unsigned layer = client->layerID();
        if(bg->hasRole(client->role()))
        {
            LayerState bg_ls = bg->getLayerState();
            bg_ls.addLayer(layer);
            auto wm_layer = this->getWMLayer(layer);
            LayerState ls = wm_layer->getLayerState();
            ls.removeLayer(layer);
        }
        ret = true;
    }
    return ret;
}

bool LayerControl::mvForeGround(const shared_ptr<WMClient> client)
{
    bool ret = false;

    // Move foreground from foreground layer
    auto bg = this->getWMLayer("BackGroundLayer");
    if(bg != nullptr)
    {
        unsigned layer = client->layerID();
        if(bg->hasRole(client->role()))
        {
            LayerState bg_ls = bg->getLayerState();
            bg_ls.removeLayer(layer);
            auto wm_layer = this->getWMLayer(layer);
            LayerState ls = wm_layer->getLayerState();
            ls.addLayer(layer);
        }
        ret = true;
    }
    return ret;
}

*/

} // namespace wm