Reworking layer/surface management
[staging/HomeScreen.git] / WindowManager / src / windowmanager.cpp
index 25d971a..ac34756 100644 (file)
@@ -15,8 +15,7 @@
  */
 
 #include "windowmanager.hpp"
-#include <wayland-client.h>
-#include <QFile>
+
 
 //////////////////////////////////////////
 // THIS IS STILL UNDER HEAVY DEVELOPMENT!
 #define WINDOWMANAGER_LAYER_APPLICATIONS 102
 #define WINDOWMANAGER_LAYER_HOMESCREEN 103
 
-#define WINDOWMANAGER_LAYER_NUM 3
+#define WINDOWMANAGER_LAYER_NUM 4
+
+#define WINDOWMANAGER_SURFACE_ID_SHIFT 22
 
-// the HomeScreen app has to have the surface id 1000
-#define WINDOWMANAGER_HOMESCREEN_MAIN_SURFACE_ID 1000
+// the HomeScreen app has to have the surface id 4194304
+#define WINDOWMANAGER_HOMESCREEN_MAIN_SURFACE_ID (1 << WINDOWMANAGER_SURFACE_ID_SHIFT)
 
+// Quick hack for scaling layer to fit non-FHD(1920x1080) screen
+//  * source rect of layer should be 1920x1080
+//  * destination rect of layer should fit physical display resolution
+//  * source rect of surface shoud be based on 1920x1080
+//  * destination rect of surface should be based on 1920x1080
+#define WINDOWMANAGER_HOMESCREEN_WIDTH  1080
+#define WINDOWMANAGER_HOMESCREEN_HEIGHT 1920
 
 void* WindowManager::myThis = 0;
 
-WindowManager::WindowManager(QObject *parent) :
+WindowManager::WindowManager(int displayId, QObject *parent) :
     QObject(parent),
     m_layouts(),
-    m_surfaces(),
     mp_layoutAreaToSurfaceIdAssignment(0),
-    m_currentLayout(-1)
+    m_currentLayout(-1),
+    m_screenId(displayId),
+    m_screenWidth(0),
+    m_screenHeight(0)
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    ,
+    m_appSurfaces(),
+    m_appLayers(),
+    m_pending_to_show(-1)
+#endif
 {
-    qDebug("-=[WindowManager]=-");
-    // publish windowmanager interface
-    mp_windowManagerAdaptor = new WindowmanagerAdaptor((QObject*)this);
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    m_showLayers = new t_ilm_layer[WINDOWMANAGER_LAYER_NUM];
 
-    QDBusConnection dbus = QDBusConnection::sessionBus();
-    dbus.registerObject("/windowmanager", this);
-    dbus.registerService("org.agl.windowmanager");
+    m_showLayers[0] = 0; /* POPUP is not shown by default */
+    m_showLayers[1] = 0; /* HOMESCREEN_OVERLAY is not shown by default */
+    m_showLayers[2] = 0; /* APPLICATIONS is not shown by default */
+    m_showLayers[3] = WINDOWMANAGER_LAYER_HOMESCREEN; /* HOMESCREEN is shwon by default */
+
+#endif
+    qDebug("-=[WindowManager]=-");
 }
 
 void WindowManager::start()
 {
     qDebug("-=[start]=-");
     mp_layoutAreaToSurfaceIdAssignment = new QMap<int, unsigned int>;
-#ifdef __arm__
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
     ilmErrorTypes err;
 
     err = ilm_init();
     qDebug("ilm_init = %d", err);
+    if(ILM_SUCCESS != err)
+    {
+        qDebug("failed! Exiting!");
+        exit(-1);
+    }
 
     myThis = this;
-    err =  ilm_registerNotification(WindowManager::notificationFunc_static, this);
+
+    ilm_getScreenResolution(m_screenId, &m_screenWidth, &m_screenHeight);
 
     createNewLayer(WINDOWMANAGER_LAYER_POPUP);
     createNewLayer(WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY);
-    createNewLayer(WINDOWMANAGER_LAYER_APPLICATIONS);
     createNewLayer(WINDOWMANAGER_LAYER_HOMESCREEN);
+
+    ilm_registerNotification(WindowManager::notificationFunc_static, this);
 #endif
+
+    QDBusConnection dbus = QDBusConnection::sessionBus();
+    dbus.registerObject("/windowmanager", this);
+    dbus.registerService("org.agl.windowmanager");
+
+    // publish windowmanager interface
+    mp_windowManagerAdaptor = new WindowmanagerAdaptor((QObject*)this);
 }
 
 WindowManager::~WindowManager()
 {
     qDebug("-=[~WindowManager]=-");
     delete mp_windowManagerAdaptor;
-#ifdef __arm__
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
     ilm_destroy();
 #endif
     delete mp_layoutAreaToSurfaceIdAssignment;
 }
 
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+int WindowManager::getLayerRenderOrder(t_ilm_layer id_array[])
+{
+    int i, j;
+
+    for (i = WINDOWMANAGER_LAYER_NUM - 1, j = 0; i >= 0; i--) {
+        if (m_showLayers[i] != 0) {
+            id_array[j++] = m_showLayers[i];
+        }
+    }
+
+    return j;
+}
+#endif
+
 void WindowManager::dumpScene()
 {
     qDebug("\n");
@@ -110,125 +158,189 @@ void WindowManager::dumpScene()
     }
 }
 
-#ifdef __arm__
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
 
 void WindowManager::createNewLayer(int layerId)
 {
     qDebug("-=[createNewLayer]=-");
-    qDebug("layerId %d", layerId);
-
-    t_ilm_uint screenID = 0;
-    t_ilm_uint width;
-    t_ilm_uint height;
-
-    ilm_getScreenResolution(screenID, &width, &height);
+    qDebug("  layerId %d", layerId);
 
     t_ilm_layer newLayerId = layerId;
-    ilm_layerCreateWithDimension(&newLayerId, width, height);
-    ilm_layerSetOpacity(newLayerId, 1.0);
-    ilm_layerSetVisibility(newLayerId, ILM_TRUE);
+    ilm_layerCreateWithDimension(&newLayerId,
+                                    WINDOWMANAGER_HOMESCREEN_WIDTH,
+                                    WINDOWMANAGER_HOMESCREEN_HEIGHT);
+    ilm_commitChanges();
     ilm_layerSetSourceRectangle(newLayerId,
                                     0,
                                     0,
-                                    width,
-                                    height);
+                                    WINDOWMANAGER_HOMESCREEN_WIDTH,
+                                    WINDOWMANAGER_HOMESCREEN_HEIGHT);
     ilm_layerSetDestinationRectangle(newLayerId,
                                     0,
                                     0,
-                                    width,
-                                    height);
-
+                                    m_screenWidth,
+                                    m_screenHeight);
+    ilm_commitChanges();
+    ilm_layerSetOpacity(newLayerId, 1.0);
+    ilm_layerSetVisibility(newLayerId, ILM_TRUE);
     ilm_commitChanges();
 }
 
-void WindowManager::addSurfaceToLayer(int surfaceId, int layerId)
+t_ilm_layer WindowManager::getAppLayerID(pid_t pid)
 {
-    qDebug("-=[addSurfaceToLayer]=-");
-    qDebug("surfaceId %d", surfaceId);
-    qDebug("layerId %d", layerId);
+    t_ilm_layer layer_id;
 
-    if (layerId == WINDOWMANAGER_LAYER_HOMESCREEN)
-    {
-        struct ilmSurfaceProperties surfaceProperties;
-        ilm_getPropertiesOfSurface(surfaceId, &surfaceProperties);
+//    layer_id = pid + (WINDOWMANAGER_LAYER_APPLICATIONS << WINDOWMANAGER_LAYER_ID_SHIFT);
+    layer_id = pid + (WINDOWMANAGER_LAYER_APPLICATIONS * 100000); /* for debug */
 
-        qDebug("sourceX %d", surfaceProperties.sourceX);
-        qDebug("sourceY %d", surfaceProperties.sourceY);
-        qDebug("sourceWidth %d", surfaceProperties.sourceWidth);
-        qDebug("sourceHeight %d", surfaceProperties.sourceHeight);
+    return layer_id;
+}
 
-        // homescreen app always fullscreen in the back
-        t_ilm_uint screenID = 0;
-        t_ilm_uint width;
-        t_ilm_uint height;
+void WindowManager::addSurface(t_ilm_surface surfaceId)
+{
+    struct ilmSurfaceProperties surfaceProperties;
+    pid_t pid;
 
-        ilm_getScreenResolution(screenID, &width, &height);
+    ilm_getPropertiesOfSurface(surfaceId, &surfaceProperties);
+    pid = surfaceProperties.creatorPid;
 
-        ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, width, height);
-        ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, width, height);
-        ilm_surfaceSetOpacity(surfaceId, 1.0);
-        ilm_surfaceSetVisibility(surfaceId, ILM_TRUE);
+    QMap<pid_t, t_ilm_surface>::const_iterator i = m_appSurfaces.find(pid);
+    if (i != m_appSurfaces.end() && i.value() == 0) {
+        /* Only the 1st surface is handled by Window Manager */
+        qDebug("This surface (%d) is 1st one for app (%d)", surfaceId, pid);
+        /* update surface id */
+        m_appSurfaces.insert(pid, surfaceId);
 
-        ilm_layerAddSurface(layerId, surfaceId);
+        /* this surface should be handled by WindowManager */
+        ilm_surfaceAddNotification(surfaceId, surfaceCallbackFunction_static);
+        ilm_commitChanges();
     }
+}
 
-    if (layerId == WINDOWMANAGER_LAYER_APPLICATIONS)
-    {
-        struct ilmSurfaceProperties surfaceProperties;
-        ilm_getPropertiesOfSurface(surfaceId, &surfaceProperties);
+t_ilm_layer WindowManager::addSurfaceToAppLayer(pid_t pid, int surfaceId)
+{
+    struct ilmSurfaceProperties surfaceProperties;
+    t_ilm_layer layer_id;
+    int found = 0;
 
-        ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetOpacity(surfaceId, 0.0);
-        ilm_surfaceSetVisibility(surfaceId, ILM_FALSE);
+    qDebug("-=[addSurfaceToAppLayer]=-");
+    qDebug("  surfaceId %d", surfaceId);
 
-        ilm_layerAddSurface(layerId, surfaceId);
+    if (pid < 0)
+        return 0;
+
+    QMap<pid_t, t_ilm_layer>::const_iterator i = m_appLayers.find(pid);
+    if (i == m_appLayers.end()) {
+        qDebug("No layer found, create new for app(pid=%d)", pid);
+
+        /* not found, create new one */
+        layer_id = getAppLayerID(pid);
+
+        createNewLayer(layer_id);
+        m_appLayers.insert(pid, layer_id);
+    } else {
+        layer_id = i.value();
     }
 
-    if (layerId == WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY)
+    return layer_id;
+}
+
+void WindowManager::addSurfaceToLayer(int surfaceId, int layerId)
+{
+    qDebug("-=[addSurfaceToLayer]=-");
+    qDebug("  surfaceId %d", surfaceId);
+    qDebug("  layerId %d", layerId);
+
+    if (layerId == WINDOWMANAGER_LAYER_HOMESCREEN)
+    {
+      ilm_layerAddSurface(layerId, surfaceId);
+    }
+    else if (layerId == WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY)
     {
         struct ilmSurfaceProperties surfaceProperties;
         ilm_getPropertiesOfSurface(surfaceId, &surfaceProperties);
 
-        ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetOpacity(surfaceId, 0.5);
-        ilm_surfaceSetVisibility(surfaceId, ILM_TRUE);
+        //ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
+        //ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
+        //ilm_surfaceSetOpacity(surfaceId, 0.5);
+        //ilm_surfaceSetVisibility(surfaceId, ILM_TRUE);
 
         ilm_layerAddSurface(layerId, surfaceId);
     }
-
-    if (layerId == WINDOWMANAGER_LAYER_POPUP)
+    else if (layerId == WINDOWMANAGER_LAYER_POPUP)
     {
         struct ilmSurfaceProperties surfaceProperties;
         ilm_getPropertiesOfSurface(surfaceId, &surfaceProperties);
 
-        ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
-        ilm_surfaceSetOpacity(surfaceId, 0.0);
-        ilm_surfaceSetVisibility(surfaceId, ILM_FALSE);
+        //ilm_surfaceSetDestinationRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
+        //ilm_surfaceSetSourceRectangle(surfaceId, 0, 0, surfaceProperties.origSourceWidth, surfaceProperties.origSourceHeight);
+        //ilm_surfaceSetOpacity(surfaceId, 0.0);
+        //ilm_surfaceSetVisibility(surfaceId, ILM_FALSE);
 
         ilm_layerAddSurface(layerId, surfaceId);
+    } else {
+        return;
     }
 
     ilm_commitChanges();
 }
 
+void WindowManager::configureHomeScreenMainSurface(t_ilm_surface surface, t_ilm_int width, t_ilm_int height)
+{
+    // homescreen app always fullscreen in the back
+    ilm_surfaceSetDestinationRectangle(surface, 0, 0,
+                                       WINDOWMANAGER_HOMESCREEN_WIDTH,
+                                       WINDOWMANAGER_HOMESCREEN_HEIGHT);
+    ilm_surfaceSetSourceRectangle(surface, 0, 0, width, height);
+    ilm_surfaceSetOpacity(surface, 1.0);
+    ilm_surfaceSetVisibility(surface, ILM_TRUE);
+
+    ilm_commitChanges();
+}
+
+void WindowManager::configureAppSurface(pid_t pid, t_ilm_surface surface, t_ilm_int width, t_ilm_int height)
+{
+    /* Dirty hack! cut & paste from HomeScreen/src/layouthandler.cpp */
+    const int SCREEN_WIDTH = 1080;
+    const int SCREEN_HEIGHT = 1920;
+
+    const int TOPAREA_HEIGHT = 218;
+    const int TOPAREA_WIDTH = SCREEN_WIDTH;
+    const int TOPAREA_X = 0;
+    const int TOPAREA_Y = 0;
+    const int MEDIAAREA_HEIGHT = 215;
+    const int MEDIAAREA_WIDTH = SCREEN_WIDTH;
+    const int MEDIAAREA_X = 0;
+    const int MEDIAAREA_Y = SCREEN_HEIGHT - MEDIAAREA_HEIGHT;
+
+    ilm_surfaceSetDestinationRectangle(surface,
+                                       0,
+                                       TOPAREA_HEIGHT,
+                                       SCREEN_WIDTH,
+                                       SCREEN_HEIGHT - TOPAREA_HEIGHT - MEDIAAREA_HEIGHT);
+    ilm_surfaceSetSourceRectangle(surface, 0, 0, width, height);
+    ilm_surfaceSetOpacity(surface, 1.0);
+    ilm_surfaceSetVisibility(surface, ILM_TRUE); /* Hack to avoid blank screen when switch apps */
+
+    ilm_commitChanges();
+}
 #endif
 
 void WindowManager::updateScreen()
 {
     qDebug("-=[updateScreen]=-");
 
-#ifdef __arm__
+#if 0
+//#ifdef HAVE_IVI_LAYERMANAGEMENT_API
     if (-1 != m_currentLayout)
     {
-
         // hide all surfaces
-        for (int i = 0; i < m_surfaces.size(); ++i)
+        for (int i = 0; i < m_appSurfaces.size(); ++i)
         {
-            ilm_surfaceSetVisibility(m_surfaces.at(i), ILM_FALSE);
-            ilm_surfaceSetOpacity(m_surfaces.at(i), 0.0);
+            ilm_layerRemoveSurface(WINDOWMANAGER_LAYER_APPLICATIONS, m_appSurfaces.at(i));
+            //ilm_surfaceSetVisibility(m_appSurfaces.at(i), ILM_FALSE);
+            //ilm_surfaceSetOpacity(m_appSurfaces.at(i), 0.0);
+            ilm_commitChanges();
         }
 
         // find the current used layout
@@ -251,6 +363,8 @@ void WindowManager::updateScreen()
             int surfaceToShow = mp_layoutAreaToSurfaceIdAssignment->find(j).value();
             qDebug("  surface no. %d: %d", j, surfaceToShow);
 
+            addSurfaceToLayer(surfaceToShow, WINDOWMANAGER_LAYER_APPLICATIONS);
+
             ilm_surfaceSetVisibility(surfaceToShow, ILM_TRUE);
             ilm_surfaceSetOpacity(surfaceToShow, 1.0);
 
@@ -265,25 +379,43 @@ void WindowManager::updateScreen()
                                              currentLayout.layoutAreas[j].y,
                                              currentLayout.layoutAreas[j].width,
                                              currentLayout.layoutAreas[j].height);
+            ilm_commitChanges();
         }
-
-        ilm_commitChanges();
     }
 
-    t_ilm_layer renderOrder[WINDOWMANAGER_LAYER_NUM];
-    renderOrder[0] = WINDOWMANAGER_LAYER_HOMESCREEN;
-    renderOrder[1] = WINDOWMANAGER_LAYER_APPLICATIONS;
-    renderOrder[2] = WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY;
-    renderOrder[3] = WINDOWMANAGER_LAYER_POPUP;
-
-    ilm_displaySetRenderOrder(0, renderOrder, WINDOWMANAGER_LAYER_NUM);
-
+    // layer surface render order
+    t_ilm_int length;
+    t_ilm_surface* pArray;
+    ilm_getSurfaceIDsOnLayer(WINDOWMANAGER_LAYER_HOMESCREEN, &length, &pArray);
+    ilm_layerSetRenderOrder(WINDOWMANAGER_LAYER_HOMESCREEN, pArray, length);
+    ilm_commitChanges();
+    ilm_getSurfaceIDsOnLayer(WINDOWMANAGER_LAYER_APPLICATIONS, &length, &pArray);
+    ilm_layerSetRenderOrder(WINDOWMANAGER_LAYER_APPLICATIONS, pArray, length);
+    ilm_commitChanges();
+    ilm_getSurfaceIDsOnLayer(WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY, &length, &pArray);
+    ilm_layerSetRenderOrder(WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY, pArray, length);
+    ilm_commitChanges();
+    ilm_getSurfaceIDsOnLayer(WINDOWMANAGER_LAYER_POPUP, &length, &pArray);
+    ilm_layerSetRenderOrder(WINDOWMANAGER_LAYER_POPUP, pArray, length);
     ilm_commitChanges();
-
+#endif
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    if (m_pending_to_show != -1) {
+        qDebug("show pending app (%d)", m_pending_to_show);
+        showAppLayer(m_pending_to_show);
+    } else {
+        // display layer render order
+        t_ilm_layer renderOrder[WINDOWMANAGER_LAYER_NUM];
+        int num_layers = getLayerRenderOrder(renderOrder);
+
+        qDebug("Screen render order %d, %d layers", m_screenId, num_layers);
+        ilm_displaySetRenderOrder(m_screenId, renderOrder, num_layers);
+        ilm_commitChanges();
+    }
 #endif
 }
 
-#ifdef __arm__
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
 void WindowManager::notificationFunc_non_static(ilmObjectType object,
                                     t_ilm_uint id,
                                     t_ilm_bool created)
@@ -296,34 +428,25 @@ void WindowManager::notificationFunc_non_static(ilmObjectType object,
 
         if (created)
         {
-            qDebug("Surface created, ID: %d", id);
-            ilm_getPropertiesOfSurface(id, &surfaceProperties);
-            qDebug("  origSourceWidth : %d", surfaceProperties.origSourceWidth);
-            qDebug("  origSourceHeight: %d", surfaceProperties.origSourceHeight);
-
             if (WINDOWMANAGER_HOMESCREEN_MAIN_SURFACE_ID == id)
             {
-                qDebug("HomeScreen app detected");
-                addSurfaceToLayer(id, WINDOWMANAGER_LAYER_HOMESCREEN);
-                updateScreen();
+                ilm_surfaceAddNotification(id, surfaceCallbackFunction_static);
+                ilm_commitChanges();
             }
             else
             {
-                addSurfaceToLayer(id, WINDOWMANAGER_LAYER_APPLICATIONS);
-
-                m_surfaces.append(id);
+                addSurface(id);
             }
-            ilm_surfaceAddNotification(id, surfaceCallbackFunction_static);
-
-            ilm_commitChanges();
         }
         else
         {
             qDebug("Surface destroyed, ID: %d", id);
-            m_surfaces.removeAt(m_surfaces.indexOf(id));
+#if 0
+            m_appSurfaces.removeAt(m_appSurfaces.indexOf(id));
             ilm_surfaceRemoveNotification(id);
 
             ilm_commitChanges();
+#endif
         }
     }
     if (ILM_LAYER == object)
@@ -350,6 +473,7 @@ void WindowManager::surfaceCallbackFunction_non_static(t_ilm_surface surface,
     {
         qDebug("ILM_NOTIFICATION_VISIBILITY");
         surfaceVisibilityChanged(surface, surfaceProperties->visibility);
+        updateScreen();
     }
     if (ILM_NOTIFICATION_OPACITY & mask)
     {
@@ -370,15 +494,41 @@ void WindowManager::surfaceCallbackFunction_non_static(t_ilm_surface surface,
     if (ILM_NOTIFICATION_CONTENT_AVAILABLE & mask)
     {
         qDebug("ILM_NOTIFICATION_CONTENT_AVAILABLE");
-        updateScreen();
     }
     if (ILM_NOTIFICATION_CONTENT_REMOVED & mask)
     {
         qDebug("ILM_NOTIFICATION_CONTENT_REMOVED");
+
+        /* application being down */
+        m_appLayers.remove(surfaceProperties->creatorPid);
     }
     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;
+            pid_t pid = surfaceProperties->creatorPid;
+            t_ilm_layer layer = addSurfaceToAppLayer(pid, surface);
+
+            if (layer != 0) {
+                configureAppSurface(pid, 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();
     }
 }
@@ -469,23 +619,25 @@ QList<Layout> WindowManager::getAllLayouts()
     return m_layouts;
 }
 
+#if 0
 QList<int> WindowManager::getAllSurfacesOfProcess(int pid)
 {
     QList<int> result;
-#ifdef __arm__
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
     struct ilmSurfaceProperties surfaceProperties;
 
-    for (int i = 0; i < m_surfaces.size(); ++i)
+    for (int i = 0; i < m_appSurfaces.size(); ++i)
     {
-        ilm_getPropertiesOfSurface(m_surfaces.at(i), &surfaceProperties);
+        ilm_getPropertiesOfSurface(m_appSurfaces.at(i), &surfaceProperties);
         if (pid == surfaceProperties.creatorPid)
         {
-            result.append(m_surfaces.at(i));
+            result.append(m_appSurfaces.at(i));
         }
     }
 #endif
     return result;
 }
+#endif
 
 QList<int> WindowManager::getAvailableLayouts(int numberOfAppSurfaces)
 {
@@ -506,12 +658,14 @@ QList<int> WindowManager::getAvailableLayouts(int numberOfAppSurfaces)
     return result;
 }
 
+#if 0
 QList<int> WindowManager::getAvailableSurfaces()
 {
     qDebug("-=[getAvailableSurfaces]=-");
 
-    return m_surfaces;
+    return m_appSurfaces;
 }
+#endif
 
 QString WindowManager::getLayoutName(int layoutId)
 {
@@ -537,24 +691,21 @@ void WindowManager::hideLayer(int layer)
     qDebug("-=[hideLayer]=-");
     qDebug("layer %d", layer);
 
-#ifdef __arm__
-    if (0 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_POPUP, ILM_FALSE);
-    }
-    if (1 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY, ILM_FALSE);
-    }
-    if (2 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_APPLICATIONS, ILM_FALSE);
-    }
-    if (3 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_HOMESCREEN, ILM_FALSE);
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    // POPUP=0, HOMESCREEN_OVERLAY=1, APPS=2, HOMESCREEN=3
+    if (layer >= 0 && layer < WINDOWMANAGER_LAYER_NUM) {
+        /* hide target layer */
+        m_showLayers[layer] = 0;
+        if (layer == 2) {
+            /* clear pending flag */
+            m_pending_to_show = -1;
+        }
+
+        t_ilm_layer renderOrder[WINDOWMANAGER_LAYER_NUM];
+        int num_layers = getLayerRenderOrder(renderOrder);
+        ilm_displaySetRenderOrder(m_screenId, renderOrder, num_layers);
+        ilm_commitChanges();
     }
-    ilm_commitChanges();
 #endif
 }
 
@@ -616,23 +767,63 @@ void WindowManager::showLayer(int layer)
     qDebug("-=[showLayer]=-");
     qDebug("layer %d", layer);
 
-#ifdef __arm__
-    if (0 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_POPUP, ILM_TRUE);
-    }
-    if (1 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY, ILM_TRUE);
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    // POPUP=0, HOMESCREEN_OVERLAY=1, APPS=2, HOMESCREEN=3
+    if (layer >= 0 && layer < WINDOWMANAGER_LAYER_NUM) {
+        static const int layer_id_array[] = {
+            WINDOWMANAGER_LAYER_POPUP,
+            WINDOWMANAGER_LAYER_HOMESCREEN_OVERLAY,
+            WINDOWMANAGER_LAYER_APPLICATIONS,
+            WINDOWMANAGER_LAYER_HOMESCREEN,
+        };
+
+        m_showLayers[layer] = layer_id_array[layer];
+
+        t_ilm_layer renderOrder[WINDOWMANAGER_LAYER_NUM];
+        int num_layers = getLayerRenderOrder(renderOrder);
+        ilm_displaySetRenderOrder(m_screenId, renderOrder, num_layers);
+        ilm_commitChanges();
     }
-    if (2 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_APPLICATIONS, ILM_TRUE);
+#endif
+}
+
+void WindowManager::showAppLayer(int pid)
+{
+    qDebug("-=[showAppLayer]=-");
+    qDebug("pid %d", pid);
+
+    if (pid == -1) {
+        /* nothing to show */
+        return;
     }
-    if (3 == layer)
-    {
-        ilm_layerSetVisibility(WINDOWMANAGER_LAYER_HOMESCREEN, ILM_TRUE);
+#ifdef HAVE_IVI_LAYERMANAGEMENT_API
+    /* clear pending flag */
+    m_pending_to_show = -1;
+
+    /* search layer id for application to show */
+    QMap<pid_t, t_ilm_layer>::const_iterator i = m_appLayers.find(pid);
+    QMap<pid_t, t_ilm_surface>::const_iterator j = m_appSurfaces.find(pid);
+
+    if (i != m_appLayers.end()) {
+        m_showLayers[2] = i.value();
+        qDebug("Found layer(%d) to show for app(pid=%d)", m_showLayers[2], pid);
+    } else {
+        /* check if this app is registered */
+        if (j == m_appSurfaces.end()) {
+            qDebug("New app %d", pid);
+            m_appSurfaces.insert(pid, 0); /* register pid only so far */
+        }
+
+        /* Probably app layer hasn't been made yet */
+        m_pending_to_show = pid;
+        /* hide current app once, back to default screen */
+        m_showLayers[2] = 0;
+        qDebug("No layer to show for app(pid=%d)", pid);
     }
+    t_ilm_layer renderOrder[WINDOWMANAGER_LAYER_NUM];
+
+    int num_layers = getLayerRenderOrder(renderOrder);
+    ilm_displaySetRenderOrder(m_screenId, renderOrder, num_layers);
     ilm_commitChanges();
 #endif
 }