source: vbox/trunk/src/VBox/HostServices/SharedOpenGL/crserverlib/server_window.c@ 35998

/* Copyright (c) 2001, Stanford University
 * All rights reserved
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#include "server.h"
#include "server_dispatch.h"
#include "cr_mem.h"
#include "cr_rand.h"
#include "cr_string.h"

GLint SERVER_DISPATCH_APIENTRY
crServerDispatchWindowCreate(const char *dpyName, GLint visBits)
{
    return crServerDispatchWindowCreateEx(dpyName, visBits, -1);
}


GLint
crServerDispatchWindowCreateEx(const char *dpyName, GLint visBits, GLint preloadWinID)
{
    CRMuralInfo *mural;
    GLint windowID = -1;
    GLint spuWindow;
    GLint dims[2];
    CRCreateInfo_t *pCreateInfo;

    if (cr_server.sharedWindows) {
        int pos, j;

        /* find empty position in my (curclient) windowList */
        for (pos = 0; pos < CR_MAX_WINDOWS; pos++) {
            if (cr_server.curClient->windowList[pos] == 0) {
                break;
            }
        }
        if (pos == CR_MAX_WINDOWS) {
            crWarning("Too many windows in crserver!");
            return -1;
        }

        /* Look if any other client has a window for this slot */
        for (j = 0; j < cr_server.numClients; j++) {
            if (cr_server.clients[j]->windowList[pos] != 0) {
                /* use that client's window */
                windowID = cr_server.clients[j]->windowList[pos];
                cr_server.curClient->windowList[pos] = windowID;
                crServerReturnValue( &windowID, sizeof(windowID) ); /* real return value */
                crDebug("CRServer: client %p sharing window %d",
                                cr_server.curClient, windowID);
                return windowID;
            }
        }
    }

    /*
     * Have first SPU make a new window.
     */
    spuWindow = cr_server.head_spu->dispatch_table.WindowCreate( dpyName, visBits );
    if (spuWindow < 0) {
        crServerReturnValue( &spuWindow, sizeof(spuWindow) );
        return spuWindow;
    }

    /* get initial window size */
    cr_server.head_spu->dispatch_table.GetChromiumParametervCR(GL_WINDOW_SIZE_CR, spuWindow, GL_INT, 2, dims);

    /*
     * Create a new mural for the new window.
     */
    mural = (CRMuralInfo *) crCalloc(sizeof(CRMuralInfo));
    if (mural) {
        CRMuralInfo *defaultMural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, 0);
        CRASSERT(defaultMural);
        mural->gX = 0;
        mural->gY = 0;
        mural->width = dims[0];
        mural->height = dims[1];

        mural->spuWindow = spuWindow;
        mural->screenId = 0;
        mural->bVisible = GL_FALSE;
        mural->bUseFBO = GL_FALSE;

        mural->cVisibleRects = 0;
        mural->pVisibleRects = NULL;
        mural->bReceivedRects = GL_FALSE;

        /* generate ID for this new window/mural (special-case for file conns) */
        if (cr_server.curClient && cr_server.curClient->conn->type == CR_FILE)
            windowID = spuWindow;
        else
            windowID = preloadWinID<0 ? crServerGenerateID(&cr_server.idsPool.freeWindowID) : preloadWinID;
        crHashtableAdd(cr_server.muralTable, windowID, mural);

        pCreateInfo = (CRCreateInfo_t *) crAlloc(sizeof(CRCreateInfo_t));
        pCreateInfo->pszDpyName = dpyName ? crStrdup(dpyName) : NULL;
        pCreateInfo->visualBits = visBits;
        crHashtableAdd(cr_server.pWindowCreateInfoTable, windowID, pCreateInfo);
    }

    crDebug("CRServer: client %p created new window %d (SPU window %d)",
                    cr_server.curClient, windowID, spuWindow);

    if (windowID != -1 && !cr_server.bIsInLoadingState) {
        int pos;
        for (pos = 0; pos < CR_MAX_WINDOWS; pos++) {
            if (cr_server.curClient->windowList[pos] == 0) {
                cr_server.curClient->windowList[pos] = windowID;
                break;
            }
        }
    }

    crServerReturnValue( &windowID, sizeof(windowID) );
    return windowID;
}

static int crServerRemoveClientWindow(CRClient *pClient, GLint window)
{
    int pos;

    for (pos = 0; pos < CR_MAX_WINDOWS; ++pos)
    {
        if (pClient->windowList[pos] == window)
        {
            pClient->windowList[pos] = 0;
            return true;
        }
    }

    return false;
}

void SERVER_DISPATCH_APIENTRY
crServerDispatchWindowDestroy( GLint window )
{
    CRMuralInfo *mural;
    int32_t client;
    CRClientNode *pNode;
    int found=false;

    mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
    if (!mural) {
         crWarning("CRServer: invalid window %d passed to WindowDestroy()", window);
         return;
    }

    if (cr_server.currentWindow == window)
    {
        cr_server.currentWindow = -1;
        crServerRedirMuralFBO(mural, GL_FALSE);
        crServerDeleteMuralFBO(mural);
    }

    crDebug("CRServer: Destroying window %d (spu window %d)", window, mural->spuWindow);
    cr_server.head_spu->dispatch_table.WindowDestroy( mural->spuWindow );

    if (cr_server.curClient)
    {
        if (cr_server.curClient->currentMural == mural)
        {
            cr_server.curClient->currentMural = NULL;
            cr_server.curClient->currentWindow = -1;
        }

        found = crServerRemoveClientWindow(cr_server.curClient, window);

        /*Same as with contexts, some apps destroy it not in a thread where it was created*/
        if (!found)
        {
            for (client=0; client<cr_server.numClients; ++client)
            {
                if (cr_server.clients[client]==cr_server.curClient)
                    continue;

                found = crServerRemoveClientWindow(cr_server.clients[client], window);

                if (found) break;
            }
        }

        if (!found)
        {
            pNode=cr_server.pCleanupClient;

            while (pNode && !found)
            {
                found = crServerRemoveClientWindow(pNode->pClient, window);
                pNode = pNode->next;
            }
        }

        CRASSERT(found);
    }

    /*Make sure this window isn't active in other clients*/
    for (client=0; client<cr_server.numClients; ++client)
    {
        if (cr_server.clients[client]->currentMural == mural)
        {
            cr_server.clients[client]->currentMural = NULL;
            cr_server.clients[client]->currentWindow = -1;
        }
    }

    pNode=cr_server.pCleanupClient;
    while (pNode)
    {
        if (pNode->pClient->currentMural == mural)
        {
            pNode->pClient->currentMural = NULL;
            pNode->pClient->currentWindow = -1;
        }
        pNode = pNode->next;
    }

    crHashtableDelete(cr_server.pWindowCreateInfoTable, window, crServerCreateInfoDeleteCB);

    if (mural->pVisibleRects)
    {
        crFree(mural->pVisibleRects);
    }
    crHashtableDelete(cr_server.muralTable, window, crFree);
}

void SERVER_DISPATCH_APIENTRY
crServerDispatchWindowSize( GLint window, GLint width, GLint height )
{
    CRMuralInfo *mural;

    /*  crDebug("CRServer: Window %d size %d x %d", window, width, height);*/
    mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
    if (!mural) {
#if EXTRA_WARN
         crWarning("CRServer: invalid window %d passed to WindowSize()", window);
#endif
         return;
    }
    mural->width = width;
    mural->height = height;

    crServerCheckMuralGeometry(mural);

    cr_server.head_spu->dispatch_table.WindowSize(mural->spuWindow, width, height);
}


void SERVER_DISPATCH_APIENTRY
crServerDispatchWindowPosition( GLint window, GLint x, GLint y )
{
    CRMuralInfo *mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
    /*  crDebug("CRServer: Window %d pos %d, %d", window, x, y);*/
    if (!mural) {
#if EXTRA_WARN
         crWarning("CRServer: invalid window %d passed to WindowPosition()", window);
#endif
         return;
    }
    mural->gX = x;
    mural->gY = y;

    crServerCheckMuralGeometry(mural);
}

void SERVER_DISPATCH_APIENTRY
crServerDispatchWindowVisibleRegion( GLint window, GLint cRects, GLint *pRects )
{
    CRMuralInfo *mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
    if (!mural) {
#if EXTRA_WARN
         crWarning("CRServer: invalid window %d passed to WindowVisibleRegion()", window);
#endif
         return;
    }

    if (mural->pVisibleRects)
    {
        crFree(mural->pVisibleRects);
        mural->pVisibleRects = NULL;
    }

    mural->cVisibleRects = cRects;
    mural->bReceivedRects = GL_TRUE;
    if (cRects)
    {
        mural->pVisibleRects = (GLint*) crAlloc(4*sizeof(GLint)*cRects);
        if (!mural->pVisibleRects)
        {
            crError("Out of memory in crServerDispatchWindowVisibleRegion");
        }
        crMemcpy(mural->pVisibleRects, pRects, 4*sizeof(GLint)*cRects);
    }

    cr_server.head_spu->dispatch_table.WindowVisibleRegion(mural->spuWindow, cRects, pRects);
}



void SERVER_DISPATCH_APIENTRY
crServerDispatchWindowShow( GLint window, GLint state )
{
    CRMuralInfo *mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, window);
    if (!mural) {
#if EXTRA_WARN
         crWarning("CRServer: invalid window %d passed to WindowShow()", window);
#endif
         return;
    }

    if (!mural->bUseFBO)
    {
        cr_server.head_spu->dispatch_table.WindowShow(mural->spuWindow, state);
    }

    mural->bVisible = state;
}


GLint
crServerSPUWindowID(GLint serverWindow)
{
    CRMuralInfo *mural = (CRMuralInfo *) crHashtableSearch(cr_server.muralTable, serverWindow);
    if (!mural) {
#if EXTRA_WARN
         crWarning("CRServer: invalid window %d passed to crServerSPUWindowID()",
                             serverWindow);
#endif
         return -1;
    }
    return mural->spuWindow;
}