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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [nanox/] [srvfunc.c] - Blame information for rev 174

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/*
 * Copyright (c) 1999, 2000, 2001 Greg Haerr <greg@censoft.com>
 * Copyright (c) 2000 Alex Holden <alex@linuxhacker.org>
 * Copyright (c) 1991 David I. Bell
 * Permission is granted to use, distribute, or modify this source,
 * provided that this copyright notice remains intact.
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MWINCLUDECOLORS
#include "serv.h"
 
static int      nextid = GR_ROOT_WINDOW_ID + 1;
 
static void CheckNextEvent(GR_EVENT *ep, GR_BOOL doSelect);
 
/*
 * Return information about the screen for clients to use.
 */
void
GrGetScreenInfo(GR_SCREEN_INFO *sip)
{
        GdGetScreenInfo(rootwp->psd, sip);
 
        /* virtual/workspace screen sizing*/
#if 0
        /* force small screen for emulation purposes*/
        sip->vs_width = 240;    /* PDA*/
        sip->vs_height = 320;
        sip->ws_width = 240;
        sip->ws_height = 298;
#else
        /* set workspace equal to screen area minus 22 pixel taskbar*/
        sip->vs_width = sip->cols;
        sip->vs_height = sip->rows;
        sip->ws_width = sip->cols;
        sip->ws_height = sip->rows - 22;
#endif
}
 
/*
 * Return the size of a text string for the font in a graphics context.
 * This is the width of the string, the height of the string,
 * and the height above the bottom of the font of the baseline for the font.
 */
void
GrGetGCTextSize(GR_GC_ID gc, void *str, int count, int flags,
        GR_SIZE *retwidth, GR_SIZE *retheight, GR_SIZE *retbase)
{
        GR_GC           *gcp;
        GR_FONT         *fontp;
        PMWFONT         pf;
 
        gcp = GsFindGC(gc);
        if (gcp == NULL)
                fontp = NULL;
        else
                fontp = GsFindFont(gcp->fontid);
        pf = fontp? fontp->pfont: stdfont;
        GdGetTextSize(pf, str, count, retwidth, retheight, retbase, flags);
}
 
#if NONETWORK
/*
 * Return the next waiting event for a client, or wait for one if there
 * is none yet.  The event is copied into the specified structure, and
 * then is moved from the event queue to the free event queue.  If there
 * is an error event waiting, it is delivered before any other events.
 */
void
GrGetNextEvent(GR_EVENT *ep)
{
        GrGetNextEventTimeout(ep, 0L);
}
 
/*
 * Return the next event from the event queue, or
 * wait for a new one if one is not ready.  If timeout
 * is nonzero, return timeout event if time elapsed.
 */
void
GrGetNextEventTimeout(GR_EVENT *ep, GR_TIMEOUT timeout)
{
        /* If no event ready, wait for one*/
        /* Note: won't work for multiple clients*/
        /* This is OK, since only static linked apps call this function*/
        while(curclient->eventhead == NULL)
                GsSelect(timeout);
        CheckNextEvent(ep, GR_FALSE);
}
 
/*
 * Wait until an event is available for a client, and then peek at it.
 */
void
GrPeekWaitEvent(GR_EVENT *ep)
{
        while(curclient->eventhead == NULL)
                GsSelect(0L);
        GrPeekEvent(ep);
}
#endif
 
/*
 * Return the next event from the event queue if one is ready.
 * If one is not ready, then the type GR_EVENT_TYPE_NONE is returned.
 * If it is an error event, then a user-specified routine is called
 * if it was defined, otherwise we clean up and exit.
 */
void
GrCheckNextEvent(GR_EVENT *ep)
{
        CheckNextEvent(ep, GR_TRUE);
}
 
static void
CheckNextEvent(GR_EVENT *ep, GR_BOOL doSelect)
{
        GR_EVENT_LIST * elp;
 
#if NONETWORK
        /* Since we're bound to server, select() is only called
         * thru here
         */
        if(doSelect)
                GsSelect(0L);
#endif
        /* Copy first event if any*/
        if(!GrPeekEvent(ep))
                return;
 
        /* Get first event again*/
        elp = curclient->eventhead;
 
        /* Remove first event from queue*/
        curclient->eventhead = elp->next;
        if (curclient->eventtail == elp)
                curclient->eventtail = NULL;
 
        elp->next = eventfree;
        eventfree = elp;
}
 
/*
 * Peek at the event queue for the current client to see if there are any
 * outstanding events.  Returns the event at the head of the queue, or
 * else a null event type.  The event is still left in the queue, however.
 */
int
GrPeekEvent(GR_EVENT *ep)
{
        GR_EVENT_LIST * elp;
 
        elp = curclient->eventhead;
        if(elp == NULL) {
                ep->type = GR_EVENT_TYPE_NONE;
                return 0;
        }
 
        /* copy event out*/
        *ep = elp->event;
        return 1;
}
 
/*
 * Return information about a window id.
 */
void
GrGetWindowInfo(GR_WINDOW_ID wid, GR_WINDOW_INFO *infoptr)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_PIXMAP       *pp;
        GR_EVENT_CLIENT *evp;           /* event-client structure */
 
        /* first check window list*/
        wp = GsFindWindow(wid);
        if (wp) {
                infoptr->wid = wid;
                /* report parent-relative x,y coordinates*/
                infoptr->x = wp->x - (wp->parent ? wp->parent->x : 0);
                infoptr->y = wp->y - (wp->parent ? wp->parent->y : 0);
                infoptr->width = wp->width;
                infoptr->height = wp->height;
                infoptr->parent = wp->parent? wp->parent->id: 0;
                infoptr->child = wp->children? wp->children->id: 0;
                infoptr->sibling = wp->siblings? wp->siblings->id: 0;
                infoptr->mapped = wp->mapped;
                infoptr->unmapcount = wp->unmapcount;
                infoptr->inputonly = !wp->output;
                infoptr->bordersize = wp->bordersize;
                infoptr->bordercolor = wp->bordercolor;
                infoptr->background = wp->background;
                infoptr->props = wp->props;
                infoptr->cursor = wp->cursorid;
                infoptr->processid = wp->owner? wp->owner->processid: 0;
                infoptr->eventmask = 0;
 
                for (evp = wp->eventclients; evp; evp = evp->next) {
                        if (evp->client == curclient)
                                infoptr->eventmask = evp->eventmask;
                }
                return;
        }
 
        /* then pixmap list*/
        pp = GsFindPixmap(wid);
        if (pp) {
                infoptr->wid = wid;
                infoptr->x = pp->x;
                infoptr->y = pp->y;
                infoptr->width = pp->width;
                infoptr->height = pp->height;
                infoptr->parent = 0;
                infoptr->child = 0;
                infoptr->sibling = 0;
                infoptr->mapped = GR_FALSE;
                infoptr->unmapcount = 0;
                infoptr->inputonly = GR_FALSE;
                infoptr->bordersize = 0;
                infoptr->bordercolor = 0;
                infoptr->background = 0;
                infoptr->eventmask = 0;
                infoptr->cursor = 0;
                infoptr->processid = pp->owner? pp->owner->processid: 0;
                return;
        }
 
        /* No error if window id is invalid.*/
        memset(infoptr, 0, sizeof(GR_WINDOW_INFO));
}
 
/*
 * Destroy an existing window and all of its children.
 * Also used to destroy a pixmap.
 */
void
GrDestroyWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_PIXMAP       *pp;
        GR_PIXMAP       *prevpp;
        PSD             psd;
 
        wp = GsFindWindow(wid);
        if (wp) {
                GsWpDestroyWindow(wp);
        } else {
                pp = GsFindPixmap(wid);
                if (pp) {
                        psd = pp->psd;
                        /* deallocate pixmap memory*/
                        if (psd->flags & PSF_ADDRMALLOC)
                                free(psd->addr);
 
                        /* deallocate mem gc*/
                        psd->FreeMemGC(psd);
 
                        /*
                         * Remove this pixmap from the complete list of pixmaps.
                         */
                        prevpp = listpp;
                        if (prevpp == pp)
                                listpp = pp->next;
                        else {
                                while (prevpp->next != pp)
                                        prevpp = prevpp->next;
                                prevpp->next = pp->next;
                        }
 
                        /*
                         * Forget various information if they related to this
                         * pixmap.  Then finally free the structure.
                         */
                        if (pp == cachepp) {
                                cachepixmapid = 0;
                                cachepp = NULL;
                        }
                        free(pp);
                }
        }
}
 
 
/*
 * Raise a window to the highest level among its siblings.
 */
void
GrRaiseWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_WINDOW       *prevwp;        /* previous window pointer */
        GR_BOOL         overlap;        /* TRUE if there was overlap */
 
        wp = GsFindWindow(wid);
        if ((wp == NULL) || (wp == rootwp))
                return;
 
        /*
         * If this is already the highest window then we are done.
         */
        prevwp = wp->parent->children;
        if (prevwp == wp)
                return;
 
        /*
         * Find the sibling just before this window so we can unlink it.
         * Also, determine if any sibling ahead of us overlaps the window.
         * Remember that for exposure events.
         */
        overlap = GR_FALSE;
        while (prevwp->siblings != wp) {
                overlap |= GsCheckOverlap(prevwp, wp);
                prevwp = prevwp->siblings;
        }
        overlap |= GsCheckOverlap(prevwp, wp);
 
        /*
         * Now unlink the window and relink it in at the front of the
         * sibling chain.
         */
        prevwp->siblings = wp->siblings;
        wp->siblings = wp->parent->children;
        wp->parent->children = wp;
 
        /*
         * Finally redraw the window if necessary.
         */
        if (overlap) {
                GsDrawBorder(wp);
                GsExposeArea(wp, wp->x, wp->y, wp->width, wp->height, NULL);
        }
}
 
/*
 * Lower a window to the lowest level among its siblings.
 */
void GrLowerWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_WINDOW       *prevwp;        /* previous window pointer */
        GR_WINDOW       *sibwp;         /* sibling window */
        GR_WINDOW       *expwp;         /* siblings being exposed */
 
        wp = GsFindWindow(wid);
        if ((wp == NULL) || (wp == rootwp))
                return;
        if (wp->siblings == NULL)
                return;
 
        /*
         * Find the sibling just before this window so we can unlink us.
         */
        prevwp = wp->parent->children;
        if (prevwp != wp) {
                while (prevwp->siblings != wp)
                        prevwp = prevwp->siblings;
        }
 
        /*
         * Remember the first sibling that is after us, so we can
         * generate exposure events for the remaining siblings.  Then
         * walk down the sibling chain looking for the last sibling.
         */
        expwp = wp->siblings;
        sibwp = wp;
        while (sibwp->siblings)
                sibwp = sibwp->siblings;
 
        /*
         * Now unlink the window and relink it in at the end of the
         * sibling chain.
         */
        if (prevwp == wp)
                wp->parent->children = wp->siblings;
        else
                prevwp->siblings = wp->siblings;
        sibwp->siblings = wp;
 
        wp->siblings = NULL;
 
        /*
         * Finally redraw the sibling windows which this window covered
         * if they overlapped our window.
         */
        while (expwp && (expwp != wp)) {
                if (GsCheckOverlap(wp, expwp)) {
                        GsExposeArea(expwp, wp->x - wp->bordersize,
                                wp->y - wp->bordersize,
                                wp->width + wp->bordersize * 2,
                                wp->height + wp->bordersize * 2, NULL);
                }
                expwp = expwp->siblings;
        }
}
 
/* Offset a window position and all children by offx,offy*/
static void
OffsetWindow(GR_WINDOW *wp, GR_COORD offx, GR_COORD offy)
{
        GR_WINDOW       *cp;
 
        wp->x += offx;
        wp->y += offy;
        for(cp=wp->children; cp; cp=cp->siblings)
                OffsetWindow(cp, offx, offy);
}
 
/* deliver an update move event to window and all children*/
static void
DeliverUpdateMoveEventAndChildren(GR_WINDOW *wp)
{
        GR_WINDOW *     childwp;
 
        GsDeliverUpdateEvent(wp, GR_UPDATE_MOVE, wp->x, wp->y,
                wp->width, wp->height);
 
        for (childwp = wp->children; childwp; childwp = childwp->siblings)
                DeliverUpdateMoveEventAndChildren(childwp);
}
 
/*
 * Move the window to the specified position relative to its parent.
 */
void
GrMoveWindow(GR_WINDOW_ID wid, GR_COORD x, GR_COORD y)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_COORD        offx, offy;
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return;
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wid);
                return;
        }
 
        x += wp->parent->x;
        y += wp->parent->y;
        offx = x - wp->x;
        offy = y - wp->y;
 
        if (wp->x == x && wp->y == y)
                return;
 
        /*** move algorithms not requiring unmap/map ***/
#if 1
        /* perform screen blit if topmost and mapped - no flicker!*/
        if (wp->mapped && wp == wp->parent->children
                && wp->parent->id == GR_ROOT_WINDOW_ID
 
                /* temp don't blit in portrait mode, still buggy*/
                && !(wp->psd->portrait & (MWPORTRAIT_LEFT|MWPORTRAIT_RIGHT))
           ) {
                int             oldx = wp->x;
                int             oldy = wp->y;
                GR_WINDOW_ID    pixid = GrNewPixmap(wp->width, wp->height,NULL);
                GR_GC_ID        gc = GrNewGC();
                GR_WINDOW *     stopwp = wp;
                int             X, Y, W, H;
 
                /* must hide cursor first or GdFixCursor() will show it*/
                GdHideCursor(rootwp->psd);
 
                /* turn off clipping of root's children*/
                GrSetGCMode(gc, GR_MODE_COPY|GR_MODE_EXCLUDECHILDREN);
 
                /* copy topmost window contents offscreen*/
                GrCopyArea(pixid, gc, 0, 0, wp->width, wp->height,
                        GR_ROOT_WINDOW_ID, oldx, oldy, MWROP_COPY);
 
                /* calc new window offsets*/
                OffsetWindow(wp, offx, offy);
 
                /* force recalc of clip region*/
                clipwp = NULL;
 
                /* copy window bits to new location*/
                GrCopyArea(GR_ROOT_WINDOW_ID, gc, wp->x, wp->y, wp->width,
                        wp->height, pixid, 0, 0, MWROP_COPY);
 
                /*
                 * If any portion of the window was offscreen
                 * and is coming onscreen, must send expose events
                 * to this window as well.
                 */
                if ((oldx < 0 && wp->x > oldx) ||
                    (oldy < 0 && wp->y > oldy) ||
                    (oldx+wp->width > rootwp->width && wp->x < oldx) ||
                    (oldy+wp->height > rootwp->height && wp->y < oldy))
                        stopwp = NULL;
 
                /*
                 * Calculate bounded exposed area and
                 * redraw anything lower than stopwp window.
                 */
                X = MWMIN(oldx, wp->x);
                Y = MWMIN(oldy, wp->y);
                W = MWMAX(oldx, wp->x) + wp->width - X;
                H = MWMAX(oldy, wp->y) + wp->height - Y;
                GsExposeArea(rootwp, X, Y, W, H, stopwp);
 
                GdShowCursor(rootwp->psd);
                GrDestroyGC(gc);
                GrDestroyWindow(pixid);
                DeliverUpdateMoveEventAndChildren(wp);
                return;
        }
#endif
#if 0
        /* perform quick move and expose if topmost and mapped - no blit*/
        if (wp->mapped && wp == wp->parent->children) {
                int     oldx = wp->x;
                int     oldy = wp->y;
                int     X, Y, W, H;
 
                OffsetWindow(wp, offx, offy);
 
                /* force recalc of clip region*/
                clipwp = NULL;
 
                X = MWMIN(oldx, wp->x);
                Y = MWMIN(oldy, wp->y);
                W = MWMAX(oldx, wp->x) + wp->width - X;
                H = MWMAX(oldy, wp->y) + wp->height - Y;
                GsExposeArea(rootwp, X, Y, W, H, NULL);
                DeliverUpdateMoveEventAndChildren(wp);
                return;
        }
#endif
        /*
         * This method will redraw the window entirely,
         * resulting in considerable flicker.
         */
        GsWpUnmapWindow(wp, GR_TRUE);
        OffsetWindow(wp, offx, offy);
        GsWpMapWindow(wp, GR_FALSE);
        DeliverUpdateMoveEventAndChildren(wp);
}
 
/*
 * Resize the window to be the specified size.
 */
void
GrResizeWindow(GR_WINDOW_ID wid, GR_SIZE width, GR_SIZE height)
{
        GR_WINDOW       *wp;            /* window structure */
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return;
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wid);
                return;
        }
        if ((width <= 0) || (height <= 0)) {
                GsError(GR_ERROR_BAD_WINDOW_SIZE, wid);
                return;
        }
 
        if ((wp->width == width) && (wp->height == height))
                return;
 
        if (wp->unmapcount || !wp->output) {
                wp->width = width;
                wp->height = height;
                return;
        }
 
        /*
         * This should be optimized to not require redrawing of the window
         * when possible.
         */
        GsWpUnmapWindow(wp, GR_TRUE);
        wp->width = width;
        wp->height = height;
        GsWpMapWindow(wp, GR_FALSE);
        GsDeliverUpdateEvent(wp, GR_UPDATE_SIZE, wp->x, wp->y, width, height);
}
 
/* set unmapcount for a window and all its children*/
static void
SetUnmapCountTree(GR_WINDOW *wp, int value, GR_BOOL increment)
{
        GR_WINDOW *     childwp;
 
        if (increment)
                wp->unmapcount += value;
        else wp->unmapcount = value;
 
        for (childwp = wp->children; childwp; childwp = childwp->siblings)
                SetUnmapCountTree(childwp, value, increment);
}
 
/*
 * Reparent window to new parent, position at passed x, y
 *
 * NOTE: currently, the new parent must be mapped before
 * reparenting, or the children of the newly parented window
 * will have bad unmapcount values due to the GrMapWindow
 * being called on the parent afterwards, and chaining down
 * through the children.
 */
void
GrReparentWindow(GR_WINDOW_ID wid, GR_WINDOW_ID pwid, GR_COORD x, GR_COORD y)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_WINDOW       *pwp;           /* parent window structure */
        GR_WINDOW       **mysibptr;     /* handle to my sibling ptr */
        GR_COORD        offx, offy;
        GR_BOOL         wasmapped;
 
        wp = GsFindWindow(wid);
        pwp = GsFindWindow(pwid);
        if (wp == NULL || pwp == NULL || wp == pwp)
                return;
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wid);
                return;
        }
 
        x += pwp->x;
        y += pwp->y;
        offx = x - wp->x;
        offy = y - wp->y;
 
/*printf("pid %d wid %d (oldpid %d) %d,%d\n", pwid, wid, wp->parent->id, pwp->unmapcount, wp->unmapcount);*/
        /*
         * Always unmap window, can't hurt if not mapped.
         */
        wasmapped = (wp->unmapcount == 0);
        GsWpUnmapWindow(wp, GR_TRUE);
 
        for(mysibptr = &(wp->parent->children); *mysibptr != wp;
                mysibptr = &((*mysibptr)->siblings))
                        continue;
        *mysibptr = wp->siblings;
        wp->parent = pwp;
        wp->siblings = pwp->children;
        pwp->children = wp;
        OffsetWindow(wp, offx, offy);
#if 1   /* temp fix to bad mapcount reparenting code below*/
        GsWpMapWindow(wp, GR_FALSE);
#else
        /*
         * If parent mapped and window was mapped, set unmapcount
         * to 0 and remap window.
         */
        if (!pwp->unmapcount && wasmapped) {
                SetUnmapCountTree(wp, 0, GR_FALSE);
                GsWpMapWindow(wp, GR_FALSE);
        } else {
                if (wasmapped)
                        SetUnmapCountTree(wp, pwp->unmapcount, GR_FALSE);
                else SetUnmapCountTree(wp, pwp->unmapcount+1, GR_FALSE);
        }
#endif
}
 
static int nextgcid = 1000;
/*
 * Allocate a new GC with default parameters.
 * The GC is owned by the current client.
 */
GR_GC_ID
GrNewGC(void)
{
        GR_GC   *gcp;
 
        gcp = (GR_GC *) malloc(sizeof(GR_GC));
        if (gcp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        gcp->id = nextgcid++;
        gcp->mode = GR_MODE_COPY;
        gcp->regionid = 0;       /* no region*/
        gcp->xoff = 0;           /* no offset*/
        gcp->yoff = 0;
        gcp->fontid = 0; /* 0 is default font*/
        gcp->foreground = WHITE;
        gcp->background = BLACK;
        gcp->usebackground = GR_TRUE;
        gcp->changed = GR_TRUE;
        gcp->owner = curclient;
        gcp->next = listgcp;
 
        listgcp = gcp;
 
        return gcp->id;
}
 
/*
 * Destroy an existing graphics context.
 */
void
GrDestroyGC(GR_GC_ID gc)
{
        GR_GC           *gcp;           /* graphics context */
        GR_GC           *prevgcp;       /* previous graphics context */
 
        gcp = GsFindGC(gc);
        if (gcp == NULL)
                return;
 
        if (gc == cachegcid) {
                cachegcid = 0;
                cachegcp = NULL;
        }
        if (gcp == curgcp)
                curgcp = NULL;
 
        if (listgcp == gcp)
                listgcp = gcp->next;
        else {
                prevgcp = listgcp;
                while (prevgcp->next != gcp)
                        prevgcp = prevgcp->next;
 
                prevgcp->next = gcp->next;
        }
        free(gcp);
}
 
/*
 * Allocate a new GC which is a copy of another one.
 * The GC is owned by the current client.
 */
GR_GC_ID
GrCopyGC(GR_GC_ID gc)
{
        GR_GC           *oldgcp;        /* old graphics context */
        GR_GC           *gcp;           /* new graphics context */
 
        oldgcp = GsFindGC(gc);
        if (oldgcp == NULL)
                return 0;
 
        gcp = (GR_GC *) malloc(sizeof(GR_GC));
        if (gcp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        /*
         * Copy all the old gcp values into the new one, except allocate
         * a new id for it and link it into the list of GCs.
         */
        *gcp = *oldgcp;
        gcp->id = nextgcid++;
        gcp->changed = GR_TRUE;
        gcp->owner = curclient;
        gcp->next = listgcp;
        listgcp = gcp;
 
        return gcp->id;
}
 
/*
 * Return information about the specified graphics context.
 */
void
GrGetGCInfo(GR_GC_ID gcid, GR_GC_INFO *gcip)
{
        GR_GC           *gcp;
 
        /*
         * Find the GC manually so that an error is not generated.
         */
        for (gcp = listgcp; gcp && (gcp->id != gcid); gcp = gcp->next)
                continue;
 
        if (gcp == NULL) {
                memset(gcip, 0, sizeof(GR_GC_INFO));
                return;
        }
 
        gcip->gcid = gcid;
        gcip->mode = gcp->mode;
        gcip->region = gcp->regionid;
        gcip->xoff = gcp->xoff;
        gcip->yoff = gcp->yoff;
        gcip->font = gcp->fontid;
        gcip->foreground = gcp->foreground;
        gcip->background = gcp->background;
        gcip->usebackground = gcp->usebackground;
}
 
static int nextregionid = 1000;
/*
 * Allocate a new REGION with default parameters.
 * The REGION is owned by the current client.
 */
GR_REGION_ID
GrNewRegion(void)
{
        GR_REGION *regionp;
 
        regionp = (GR_REGION *) malloc(sizeof(GR_REGION));
        if (regionp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        regionp->rgn = GdAllocRegion();
        regionp->id = nextregionid++;
        regionp->owner = curclient;
        regionp->next = listregionp;
 
        listregionp = regionp;
        return regionp->id;
}
 
/*
 * Allocate a new region from a set of points interpreted as a polygon.
 * The REGION is owned by the current client.
 */
GR_REGION_ID
GrNewPolygonRegion(int mode, GR_COUNT count, GR_POINT *points)
{
#if POLYREGIONS
        GR_REGION *regionp;
 
        regionp = (GR_REGION *) malloc(sizeof(GR_REGION));
        if (regionp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        regionp->rgn = GdAllocPolygonRegion(points, count, mode);
        regionp->id = nextregionid++;
        regionp->owner = curclient;
        regionp->next = listregionp;
 
        listregionp = regionp;
        return regionp->id;
#else
        return 0;
#endif
}
 
/*
 * Destroy an existing region.
 */
void
GrDestroyRegion(GR_REGION_ID region)
{
        GR_REGION       *regionp;       /* region */
        GR_REGION       *prevregionp;   /* previous region */
 
        regionp = GsFindRegion(region);
        if (regionp == NULL)
                return;
 
        if (listregionp == regionp)
                listregionp = regionp->next;
        else {
                prevregionp = listregionp;
                while (prevregionp->next != regionp)
                        prevregionp = prevregionp->next;
 
                prevregionp->next = regionp->next;
        }
        GdDestroyRegion(regionp->rgn);
        free(regionp);
}
 
/*
 * Updates the region from a union of the specified rectangle
 * and the original region.
 */
void
GrUnionRectWithRegion(GR_REGION_ID region, GR_RECT *rect)
{
        GR_REGION       *regionp;
        MWRECT          rc;
 
        regionp = GsFindRegion(region);
        if (regionp) {
                /* convert Nano-X rect to MW rect*/
                rc.left = rect->x;
                rc.top = rect->y;
                rc.right = rect->x + rect->width;
                rc.bottom = rect->y + rect->height;
                GdUnionRectWithRegion(&rc, regionp->rgn);
        }
}
 
/*
 * Updates the region from a union of two regions.
 */
void
GrUnionRegion(GR_REGION_ID dst_rgn, GR_REGION_ID src_rgn1,
        GR_REGION_ID src_rgn2)
{
        GR_REGION       *regionp;
        GR_REGION       *srcregionp1;
        GR_REGION       *srcregionp2;
 
        regionp = GsFindRegion(dst_rgn);
        if (regionp == NULL)
                return;
 
        srcregionp1 = GsFindRegion(src_rgn1);
        if (srcregionp1 == NULL)
                return;
 
        srcregionp2 = GsFindRegion(src_rgn2);
        if (srcregionp2 == NULL)
                return;
 
        GdUnionRegion(regionp->rgn, srcregionp1->rgn, srcregionp2->rgn);
}
 
/*
 * Updates the region by subtracting a region from another.
 */
void
GrSubtractRegion(GR_REGION_ID dst_rgn, GR_REGION_ID src_rgn1,
        GR_REGION_ID src_rgn2)
{
        GR_REGION       *regionp;
        GR_REGION       *srcregionp1;
        GR_REGION       *srcregionp2;
 
        regionp = GsFindRegion(dst_rgn);
        if (regionp == NULL)
                return;
 
        srcregionp1 = GsFindRegion(src_rgn1);
        if (srcregionp1 == NULL)
                return;
 
        srcregionp2 = GsFindRegion(src_rgn2);
        if (srcregionp2 == NULL)
                return;
 
        GdSubtractRegion(regionp->rgn, srcregionp1->rgn, srcregionp2->rgn);
}
 
/*
 * Updates the region to the difference of two regions.
 */
void
GrXorRegion(GR_REGION_ID dst_rgn, GR_REGION_ID src_rgn1,
        GR_REGION_ID src_rgn2)
{
        GR_REGION       *regionp;
        GR_REGION       *srcregionp1;
        GR_REGION       *srcregionp2;
 
        regionp = GsFindRegion(dst_rgn);
        if (regionp == NULL)
                return;
 
        srcregionp1 = GsFindRegion(src_rgn1);
        if (srcregionp1 == NULL)
                return;
 
        srcregionp2 = GsFindRegion(src_rgn2);
        if (srcregionp2 == NULL)
                return;
 
        GdXorRegion(regionp->rgn, srcregionp1->rgn, srcregionp2->rgn);
}
 
/*
 * Updates the region from a intersection of two regions.
 */
void
GrIntersectRegion(GR_REGION_ID dst_rgn, GR_REGION_ID src_rgn1,
        GR_REGION_ID src_rgn2)
{
        GR_REGION       *regionp;
        GR_REGION       *srcregionp1;
        GR_REGION       *srcregionp2;
 
        regionp = GsFindRegion(dst_rgn);
        if (regionp == NULL)
                return;
 
        srcregionp1 = GsFindRegion(src_rgn1);
        if (srcregionp1 == NULL)
                return;
 
        srcregionp2 = GsFindRegion(src_rgn2);
        if (srcregionp2 == NULL)
                return;
 
        GdIntersectRegion(regionp->rgn, srcregionp1->rgn, srcregionp2->rgn);
}
 
/*
 * Sets the clip-mask in the GC to the specified region.
 */
void
GrSetGCRegion(GR_GC_ID gc, GR_REGION_ID region)
{
        GR_GC           *gcp;
 
        gcp = GsFindGC(gc);
        if(gcp == NULL)
                return;
 
        gcp->regionid = region;
        gcp->changed = GR_TRUE;
}
 
/*
 * Set the x,y origin of user clip region in GC.
 */
void
GrSetGCClipOrigin(GR_GC_ID gc, int xoff, int yoff)
{
        GR_GC           *gcp;
 
        gcp = GsFindGC(gc);
        if(gcp == NULL)
                return;
 
        gcp->xoff = xoff;
        gcp->yoff = yoff;
        gcp->changed = GR_TRUE;
}
 
/*
 * Determines whether a specified point resides in a region.
 */
GR_BOOL
GrPointInRegion(GR_REGION_ID region, GR_COORD x, GR_COORD y)
{
        GR_REGION       *regionp;
 
        regionp =  GsFindRegion(region);
        if (regionp == NULL)
                return GR_FALSE;
 
        return GdPtInRegion(regionp->rgn, x, y);
}
 
/*
 * Determines whether a specified rectangle at least partly resides
 * in a region.
 */
int
GrRectInRegion(GR_REGION_ID region, GR_COORD x, GR_COORD y, GR_COORD w,
        GR_COORD h)
{
        GR_REGION       *regionp;
        MWRECT          rect;
 
        regionp =  GsFindRegion(region);
        if (regionp == NULL)
                return MWRECT_OUT;
 
        rect.left = x;
        rect.top = y;
        rect.right = x + w;
        rect.bottom = y + h;
        return GdRectInRegion(regionp->rgn, &rect);
}
 
/*
 * Return GR_TRUE if a region is empty.
 */
GR_BOOL
GrEmptyRegion(GR_REGION_ID region)
{
        GR_REGION       *regionp;
 
        regionp =  GsFindRegion(region);
        if (regionp == NULL)
                return GR_TRUE;
 
        return GdEmptyRegion(regionp->rgn);
}
 
/*
 * Return GR_TRUE if two regions are identical.
 */
GR_BOOL
GrEqualRegion(GR_REGION_ID rgn1, GR_REGION_ID rgn2)
{
        GR_REGION       *prgn1;
        GR_REGION       *prgn2;
 
        prgn1 = GsFindRegion(rgn1);
        prgn2 = GsFindRegion(rgn2);
 
        if (!prgn1 && !prgn2)
                return GR_TRUE;
        if (!prgn1 || !prgn2)
                return GR_FALSE;
 
        return GdEqualRegion(prgn1->rgn, prgn2->rgn);
}
 
/*
 * Offset a region by dx, dy.
 */
void
GrOffsetRegion(GR_REGION_ID region, GR_SIZE dx, GR_SIZE dy)
{
        GR_REGION       *regionp;
 
        regionp =  GsFindRegion(region);
        if (regionp)
                GdOffsetRegion(regionp->rgn, dx, dy);
}
 
/*
 * Return the bounding box for the specified region.
 */
int
GrGetRegionBox(GR_REGION_ID region, GR_RECT *rect)
{
        GR_REGION       *regionp;
        MWRECT          rc;
        int             ret_val;
 
        regionp =  GsFindRegion(region);
        if (regionp == NULL) {
                memset(rect, 0, sizeof(GR_RECT));
                return MWREGION_ERROR;
        }
 
        ret_val = GdGetRegionBox(regionp->rgn, &rc);
        /* convert MW rect to Nano-X rect*/
        rect->x = rc.left;
        rect->y = rc.top;
        rect->width = rc.right - rc.left;
        rect->height = rc.bottom - rc.top;
        return ret_val;
}
 
static int nextfontid = 1000;
/*
 * Allocate a new GC with default parameters.
 * The GC is owned by the current client.
 */
GR_FONT_ID
GrCreateFont(GR_CHAR *name, GR_COORD height, GR_LOGFONT *plogfont)
{
        GR_FONT *fontp;
 
        fontp = (GR_FONT *) malloc(sizeof(GR_FONT));
        if (fontp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        if (plogfont)
                fontp->pfont = GdCreateFont(&scrdev, NULL, 0, plogfont);
        else
                fontp->pfont = GdCreateFont(&scrdev, name, height, NULL);
        fontp->id = nextfontid++;
        fontp->owner = curclient;
        fontp->next = listfontp;
 
        listfontp = fontp;
 
        return fontp->id;
}
 
/* Set the font size for the passed font*/
void
GrSetFontSize(GR_FONT_ID fontid, GR_COORD size)
{
        GR_FONT         *fontp;
 
        fontp = GsFindFont(fontid);
        if (fontp)
                GdSetFontSize(fontp->pfont, size);
}
 
/* Set the font rotation in tenths of degrees for the passed font*/
void
GrSetFontRotation(GR_FONT_ID fontid, int tenthdegrees)
{
        GR_FONT         *fontp;
 
        fontp = GsFindFont(fontid);
        if (fontp)
                GdSetFontRotation(fontp->pfont, tenthdegrees);
}
 
/* Set the font size for the passed font*/
void
GrSetFontAttr(GR_FONT_ID fontid, int setflags, int clrflags)
{
        GR_FONT         *fontp;
 
        fontp = GsFindFont(fontid);
        if (fontp)
                GdSetFontAttr(fontp->pfont, setflags, clrflags);
}
 
/*
 * Unload and deallocate an existing font.
 */
void
GrDestroyFont(GR_FONT_ID fontid)
{
        GR_FONT         *fontp;
        GR_FONT         *prevfontp;
 
        fontp = GsFindFont(fontid);
        if (fontp == NULL)
                return;
 
        if (listfontp == fontp)
                listfontp = fontp->next;
        else {
                prevfontp = listfontp;
                while (prevfontp->next != fontp)
                        prevfontp = prevfontp->next;
 
                prevfontp->next = fontp->next;
        }
        GdDestroyFont(fontp->pfont);
        free(fontp);
}
 
/*
 * Return useful information about the specified font.
 * Font #0 returns info about the standard font.
 */
void
GrGetFontInfo(GR_FONT_ID font, GR_FONT_INFO *fip)
{
        GR_FONT *fontp;
        PMWFONT pf;
 
        if (font == 0)
                pf = stdfont;
        else {
                fontp = GsFindFont(font);
                if (!fontp) {
                        memset(fip, 0, sizeof(GR_FONT_INFO));
                        return;
                }
                pf = fontp->pfont;
        }
        GdGetFontInfo(pf, fip);
}
 
/*
 * Select events for a window for this client.
 * The events are a bitmask for the events desired.
 */
void
GrSelectEvents(GR_WINDOW_ID wid, GR_EVENT_MASK eventmask)
{
        GR_WINDOW       *wp;            /* window structure */
        GR_EVENT_CLIENT *evp;           /* event-client structure */
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return;
 
        /*
         * See if this client is already in the event client list.
         * If so, then just replace the events he is selecting for.
         */
        for (evp = wp->eventclients; evp; evp = evp->next) {
                if (evp->client == curclient) {
                        evp->eventmask = eventmask;
                        return;
                }
        }
 
        /*
         * A new client for this window, so allocate a new event client
         * structure and insert it into the front of the list in the window.
         */
        evp = (GR_EVENT_CLIENT *) malloc(sizeof(GR_EVENT_CLIENT));
        if (evp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, wid);
                return;
        }
 
        evp->client = curclient;
        evp->eventmask = eventmask;
        evp->next = wp->eventclients;
        wp->eventclients = evp;
 
        /*
         * If it's a request for child updates to the root window,
         * then search entire list and send map events for
         * mapped windows now.  This allows a window manager
         * to get the mapped window list without another API call.
         */
        if (wid==GR_ROOT_WINDOW_ID && (eventmask & GR_EVENT_MASK_CHLD_UPDATE)) {
                for (wp = listwp; wp; wp = wp->next) {
                        if (wp->unmapcount == 0)
                                GsDeliverUpdateEvent(wp, GR_UPDATE_MAP,
                                        wp->x, wp->y, wp->width, wp->height);
                }
        }
}
 
static GR_WINDOW *
NewWindow(GR_WINDOW *pwp, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height, GR_SIZE bordersize, GR_COLOR background,
        GR_COLOR bordercolor)
{
        GR_WINDOW       *wp;    /* new window*/
 
        if (width <= 0 || height <= 0 || bordersize < 0) {
                GsError(GR_ERROR_BAD_WINDOW_SIZE, 0);
                return NULL;
        }
 
        wp = (GR_WINDOW *) malloc(sizeof(GR_WINDOW));
        if (wp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return NULL;
        }
 
        wp->id = nextid++;
        wp->psd = rootwp->psd;
        wp->parent = pwp;
        wp->children = NULL;
        wp->siblings = pwp->children;
        wp->next = listwp;
        wp->x = pwp->x + x;
        wp->y = pwp->y + y;
        wp->width = width;
        wp->height = height;
        wp->bordersize = bordersize;
        wp->background = background;
        wp->bgpixmap = NULL;
        wp->bgpixmapflags = GR_BACKGROUND_TILE;
        wp->bordercolor = bordercolor;
        wp->nopropmask = 0;
        wp->eventclients = NULL;
        wp->owner = curclient;
        wp->cursorid = pwp->cursorid;
        wp->mapped = GR_FALSE;
        wp->unmapcount = pwp->unmapcount + 1;
        wp->output = GR_TRUE;
        wp->props = 0;
        wp->title = NULL;
 
        pwp->children = wp;
        listwp = wp;
 
        return wp;
}
 
/*
 * Allocate a new window which is a child of the specified window.
 * The window inherits the cursor of the parent window.
 * The window is owned by the current client.
 */
GR_WINDOW_ID
GrNewWindow(GR_WINDOW_ID parent, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height, GR_SIZE bordersize, GR_COLOR background,
        GR_COLOR bordercolor)
{
        GR_WINDOW       *pwp;           /* parent window */
        GR_WINDOW       *wp;            /* new window */
 
        pwp = GsFindWindow(parent);
        if (pwp == NULL)
                return 0;
 
        if (!pwp->output) {
                GsError(GR_ERROR_INPUT_ONLY_WINDOW, pwp->id);
                return 0;
        }
 
        wp = NewWindow(pwp, x, y, width, height, bordersize, background,
                bordercolor);
        return wp? wp->id: 0;
}
 
/*
 * Allocate a new input-only window which is a child of the specified window.
 * Such a window is invisible, cannot be drawn into, and is only used to
 * return events.  The window inherits the cursor of the parent window.
 * The window is owned by the current client.
 */
GR_WINDOW_ID
GrNewInputWindow(GR_WINDOW_ID parent, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height)
{
        GR_WINDOW       *pwp;           /* parent window */
        GR_WINDOW       *wp;            /* new window */
 
        pwp = GsFindWindow(parent);
        if (pwp == NULL)
                return 0;
 
        wp = NewWindow(pwp, x, y, width, height, 0, BLACK, BLACK);
        if (wp) {
                /* convert to input-only window*/
                wp->output = GR_FALSE;
                return wp->id;
        }
        return 0;
}
 
/*
 * Allocate a pixmap, can be used with any drawing functions
 * for offscreen drawing
 */
GR_WINDOW_ID
GrNewPixmap(GR_SIZE width, GR_SIZE height, void * pixels)
{
        GR_PIXMAP       *pp;
        PSD             psd;
        int             size, linelen, bpp, planes;
 
        if (width <= 0 || height <= 0) {
                /* no error for now, server will desynchronize w/app*/
                /*GsError(GR_ERROR_BAD_WINDOW_SIZE, 0);*/
                return 0;
        }
 
        /*
         * allocate offscreen psd.  If screen driver doesn't
         * support blitting, this will fail.  Use root window screen
         * device for compatibility for now.
         */
        planes = rootwp->psd->planes;
        bpp = rootwp->psd->bpp;
        psd = rootwp->psd->AllocateMemGC(rootwp->psd);
        if (!psd)
                return 0;
 
        pp = (GR_PIXMAP *) malloc(sizeof(GR_PIXMAP));
        if (pp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                psd->FreeMemGC(psd);
                return 0;
        }
 
        GdCalcMemGCAlloc(psd, width, height, 0, 0, &size, &linelen);
 
        /* Allocate space for pixel values */
        if (!pixels) {
                pixels = calloc(size, 1);
                psd->flags |= PSF_ADDRMALLOC;
        }
        if (!pixels) {
                free(pp);
                psd->FreeMemGC(psd);
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        pp->id = nextid++;
        pp->next = listpp;
        pp->psd = psd;
        pp->x = 0;
        pp->y = 0;
        pp->width = width;
        pp->height = height;
        pp->owner = curclient;
 
        psd->MapMemGC(psd, width, height, planes, bpp, linelen, size,
                pixels);
 
        listpp = pp;
        return pp->id;
}
 
/*
 * Map the window to make it (and possibly its children) visible on the screen.
 */
void
GrMapWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
 
        wp = GsFindWindow(wid);
        if (!wp || wp->mapped)
                return;
 
        wp->mapped = GR_TRUE;
 
        GsWpMapWindow(wp, GR_FALSE);
}
 
/*
 * Unmap the window to make it and its children invisible on the screen.
 */
void
GrUnmapWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
 
        wp = GsFindWindow(wid);
        if (!wp || !wp->mapped)
                return;
 
        GsWpUnmapWindow(wp, GR_FALSE);
 
        wp->mapped = GR_FALSE;
}
 
/*
 * Clear the associated area of a window to its background color
 * or pixmap.  Generate expose event for window if exposeflag set.
 */
void
GrClearArea(GR_WINDOW_ID wid, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height, GR_BOOL exposeflag)
{
        GR_WINDOW               *wp;    /* window structure */
 
        wp = GsPrepareWindow(wid);
        if (wp) {
                if (width == 0)
                        width = wp->width;
                if (height == 0)
                        height = wp->height;
                GsWpClearWindow(wp, x, y, width, height, exposeflag);
        }
}
 
/* Return window with keyboard focus.*/
GR_WINDOW_ID
GrGetFocus(void)
{
        return focuswp->id;
}
 
/*
 * Set the focus to a particular window.
 * This makes keyboard events only visible to that window or children of it,
 * depending on the pointer location.
 */
void
GrSetFocus(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* window structure */
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return;
 
        if (wp->unmapcount) {
                GsError(GR_ERROR_UNMAPPED_FOCUS_WINDOW, wid);
                return;
        }
 
        /* Check if window wants focus, if not, ignore call*/
        if (wp->props & GR_WM_PROPS_NOFOCUS)
                return;
 
        focusfixed = (wp != rootwp);
        GsWpSetFocus(wp);
}
 
/*
 * Create a new server-based cursor resource.
 */
static int nextcursorid = 1000;
GR_CURSOR_ID
GrNewCursor(GR_SIZE width, GR_SIZE height, GR_COORD hotx, GR_COORD hoty,
        GR_COLOR foreground, GR_COLOR background, GR_BITMAP *fgbitmap,
        GR_BITMAP *bgbitmap)
{
        GR_CURSOR       *cp;
        int             bytes;
 
        /*
         * Make sure the size of the bitmap is reasonable.
         */
        if (width <= 0 || width > MWMAX_CURSOR_SIZE ||
            height <= 0 || height > MWMAX_CURSOR_SIZE) {
                GsError(GR_ERROR_BAD_CURSOR_SIZE, 0);
                return 0;
        }
 
        cp = (GR_CURSOR *)malloc(sizeof(GR_CURSOR));
        if (cp == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                return 0;
        }
 
        /* fill in cursor structure*/
        cp->cursor.width = width;
        cp->cursor.height = height;
        cp->cursor.hotx = hotx;
        cp->cursor.hoty = hoty;
        cp->cursor.fgcolor = foreground;
        cp->cursor.bgcolor = background;
        bytes = GR_BITMAP_SIZE(width, height) * sizeof(GR_BITMAP);
        memcpy(&cp->cursor.image, fgbitmap, bytes);
        memcpy(&cp->cursor.mask, bgbitmap, bytes);
 
        cp->id = nextcursorid++;
        cp->owner = curclient;
        cp->next = listcursorp;
        listcursorp = cp;
 
        return cp->id;
}
 
/*
 * Destroy a server-based cursor.
 */
void
GrDestroyCursor(GR_CURSOR_ID cid)
{
        GR_CURSOR       *cursorp;
        GR_CURSOR       *prevcursorp;
 
        cursorp = GsFindCursor(cid);
        if (cursorp == NULL)
                return;
 
        if (listcursorp == cursorp)
                listcursorp = cursorp->next;
        else {
                prevcursorp = listcursorp;
                while (prevcursorp->next != cursorp)
                        prevcursorp = prevcursorp->next;
 
                prevcursorp->next = cursorp->next;
        }
 
        if (curcursor == cursorp)
                curcursor = NULL;
 
        free(cursorp);
        GsCheckCursor();
}
 
/*
 * Specify a cursor for a window.
 * This cursor will only be used within that window, and by default
 * for its new children.  If the cursor is currently within this
 * window, it will be changed to the new one immediately.
 * If the new cursor id is 0, revert to the root window cursor.
 */
void
GrSetWindowCursor(GR_WINDOW_ID wid, GR_CURSOR_ID cid)
{
        GR_WINDOW       *wp;
        GR_CURSOR       *cp;            /* cursor structure */
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return;
 
        if (cid == 0)
                cp = stdcursor;
        else {
                cp = GsFindCursor(cid);
                if (!cp)
                        return;         /* FIXME add server errmsg*/
        }
        wp->cursorid = cid;
 
        /*
         * If this was the current cursor, then draw the new one.
         */
        if (cp == curcursor || curcursor == NULL) {
                GdMoveCursor(cursorx - cp->cursor.hotx,
                        cursory - cp->cursor.hoty);
                GdSetCursor(&cp->cursor);
        }
 
        GsCheckCursor();
}
 
/*
 * Move the cursor to the specified absolute screen coordinates.
 * The coordinates are that of the defined hot spot of the cursor.
 * The cursor's appearance is changed to that defined for the window
 * in which the cursor is moved to.  In addition, mouse enter, mouse
 * exit, focus in, and focus out events are generated if necessary.
 * The current mouse location is also changed.
 */
void
GrMoveCursor(GR_COORD x, GR_COORD y)
{
        /*
         * Move the cursor only if necessary, offsetting it to
         * place the hot spot at the specified coordinates.
         */
        if ((x != cursorx) || (y != cursory)) {
                if(curcursor) {
                        GdMoveCursor(x - curcursor->cursor.hotx,
                                y - curcursor->cursor.hoty);
                        GdMoveMouse(x, y);
                }
                cursorx = x;
                cursory = y;
        }
 
        /*
         * Now check to see which window the mouse is in, whether or
         * not the cursor shape should be changed, and whether or not
         * the input focus window should be changed.
         */
        GsCheckMouseWindow();
        GsCheckFocusWindow();
        GsCheckCursor();
}
 
/*
 * Set the foreground color in a graphics context.
 */
void
GrSetGCForeground(GR_GC_ID gc, GR_COLOR foreground)
{
        GR_GC           *gcp;           /* graphics context */
 
        gcp = GsFindGC(gc);
        if (!gcp || gcp->foreground == foreground)
                return;
 
        gcp->foreground = foreground;
        gcp->changed = GR_TRUE;
}
 
/*
 * Set the background color in a graphics context.
 */
void
GrSetGCBackground(GR_GC_ID gc, GR_COLOR background)
{
        GR_GC           *gcp;           /* graphics context */
 
        gcp = GsFindGC(gc);
        if (!gcp || gcp->background == background)
                return;
 
        gcp->background = background;
        gcp->changed = GR_TRUE;
}
 
/*
 * Set whether or not the background color is drawn in bitmaps and text.
 */
void
GrSetGCUseBackground(GR_GC_ID gc, GR_BOOL flag)
{
        GR_GC           *gcp;           /* graphics context */
 
        flag = (flag != 0);
        gcp = GsFindGC(gc);
        if (!gcp || gcp->usebackground == flag)
                return;
 
        gcp->usebackground = flag;
        gcp->changed = GR_TRUE;
}
 
/*
 * Set the drawing mode in a graphics context.
 */
void
GrSetGCMode(GR_GC_ID gc, int mode)
{
        GR_GC           *gcp;           /* graphics context */
 
        gcp = GsFindGC(gc);
        if (!gcp || gcp->mode == mode)
                return;
        if ((mode & GR_MODE_DRAWMASK) > GR_MAX_MODE) {
                GsError(GR_ERROR_BAD_DRAWING_MODE, gc);
                return;
        }
 
        gcp->mode = mode;
        gcp->changed = GR_TRUE;
}
 
/*
 * Set the text font in a graphics context.
 */
void
GrSetGCFont(GR_GC_ID gc, GR_FONT_ID font)
{
        GR_GC           *gcp;           /* graphics context */
        GR_FONT         *fontp;
 
        gcp = GsFindGC(gc);
        if (!gcp || gcp->fontid == font)
                return;
 
        fontp = GsFindFont(font);
        gcp->fontid = font;
        gcp->changed = GR_TRUE;
}
 
/*
 * Draw a line in the specified drawable using the specified graphics context.
 */
 
void
GrLine(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x1, GR_COORD y1, GR_COORD x2,
        GR_COORD y2)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdLine(dp->psd, dp->x + x1, dp->y + y1,
                                dp->x + x2, dp->y + y2, TRUE);
                        break;
        }
}
 
/*
 * Draw the boundary of a rectangle in the specified drawable using the
 * specified graphics context.
 * NOTE: this function draws a rectangle 1 pixel wider and higher
 * than Xlib's XDrawRectangle().
 */
void
GrRect(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdRect(dp->psd, dp->x + x, dp->y + y, width, height);
                        break;
        }
}
 
/*
 * Fill a rectangle in the specified drawable using the specified
 * graphics context.
 */
void
GrFillRect(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdFillRect(dp->psd, dp->x + x, dp->y + y, width,height);
                        break;
        }
}
 
/*
 * Draw the boundary of an ellipse in the specified drawable with
 * the specified graphics context.  Integer only.
 */
void
GrEllipse(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE rx,
        GR_SIZE ry)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdEllipse(dp->psd, dp->x + x, dp->y + y, rx, ry, FALSE);
                        break;
        }
}
 
/*
 * Fill an ellipse in the specified drawable using the specified
 * graphics context.  Integer only.
 */
void
GrFillEllipse(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE rx,
        GR_SIZE ry)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdEllipse(dp->psd, dp->x + x, dp->y + y, rx, ry, TRUE);
                        break;
        }
}
 
/*
 * Draw an arc, pie or ellipse in the specified drawable using
 * the specified graphics context.  Integer only.
 */
void
GrArc(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE rx, GR_SIZE ry, GR_COORD ax, GR_COORD ay,
        GR_COORD bx, GR_COORD by, int type)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdArc(dp->psd, dp->x + x, dp->y + y, rx, ry,
                                dp->x+ax, dp->y+ay, dp->x+bx, dp->y+by, type);
                        break;
        }
}
 
/*
 * Draw an arc or pie in the specified drawable using
 * the specified graphics context.  Requires floating point.
 */
void
GrArcAngle(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE rx, GR_SIZE ry, GR_COORD angle1, GR_COORD angle2, int type)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdArcAngle(dp->psd, dp->x + x, dp->y + y, rx, ry,
                                angle1, angle2, type);
                        break;
        }
}
 
/*
 * Draw a rectangular area in the specified drawable using the specified
 * graphics, as determined by the specified bit map.  This differs from
 * rectangle drawing in that the rectangle is drawn using the foreground
 * color and possibly the background color as determined by the bit map.
 * Each row of bits is aligned to the next bitmap word boundary (so there
 * is padding at the end of the row).  The background bit values are only
 * written if the usebackground flag is set in the GC.
 */
void
GrBitmap(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height, GR_BITMAP *imagebits)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdBitmap(dp->psd, dp->x + x, dp->y + y, width, height,
                                imagebits);
                        break;
        }
}
 
/* draw a multicolor image at x, y*/
void
GrDrawImageBits(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_IMAGE_HDR *pimage)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdDrawImage(dp->psd, dp->x + x, dp->y + y, pimage);
                        break;
        }
}
 
#if !((DOS_DJGPP) || (__PACIFIC__) || (DOS_TURBOC))
/* Load an image file from disk and display it at the specified coordinates*/
void
GrDrawImageFromFile(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height, char* path, int flags)
{
#if defined(HAVE_FILEIO)
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdDrawImageFromFile(dp->psd, dp->x + x, dp->y + y,
                                width, height, path, flags);
                        break;
        }
#endif
}
 
/* load image from file and cache it*/
GR_IMAGE_ID
GrLoadImageFromFile(char *path, int flags)
{
#if defined(HAVE_FILEIO)
        GR_IMAGE_ID     id;
        GR_IMAGE *      imagep;
 
        id = GdLoadImageFromFile(&scrdev, path, flags);
        if (!id)
                return 0;
 
        imagep = (GR_IMAGE *) malloc(sizeof(GR_IMAGE));
        if (imagep == NULL) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                GdFreeImage(id);
                return 0;
        }
 
        imagep->id = id;
        imagep->owner = curclient;
        imagep->next = listimagep;
 
        listimagep = imagep;
        return id;
#else
        return 0;
#endif 
}
 
/* Draw an image from a buffer */
 
void
GrDrawImageFromBuffer(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
                      GR_SIZE width, GR_SIZE height,
                      void *buffer, int size, int flags)
{
  GR_DRAWABLE   *dp;
 
  switch (GsPrepareDrawing(id, gc, &dp)) {
  case GR_DRAW_TYPE_WINDOW:
  case GR_DRAW_TYPE_PIXMAP:
    GdDrawImageFromBuffer(dp->psd, dp->x + x, dp->y + y,
                        width, height, buffer, size, flags);
    break;
  }
}
 
/* load image from the given buffer and cache it*/
 
GR_IMAGE_ID
GrLoadImageFromBuffer(void *buffer, int size, int flags)
{
  GR_IMAGE_ID   id;
  GR_IMAGE *    imagep;
 
  id = GdLoadImageFromBuffer(&scrdev, buffer, size, flags);
  if (!id) return(0);
 
  imagep = (GR_IMAGE *) malloc(sizeof(GR_IMAGE));
  if (imagep == NULL) {
    GsError(GR_ERROR_MALLOC_FAILED, 0);
    GdFreeImage(id);
    return 0;
  }
 
  imagep->id = id;
  imagep->owner = curclient;
  imagep->next = listimagep;
 
  listimagep = imagep;
  return id;
}
 
 
/* draw cached image*/
void
GrDrawImageToFit(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height, GR_IMAGE_ID imageid)
{
#if defined(HAVE_FILEIO)
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdDrawImageToFit(dp->psd, dp->x + x, dp->y + y,
                                width, height, imageid);
                        break;
 
        }
#endif
}
 
/* free cached image*/
void
GrFreeImage(GR_IMAGE_ID id)
{
#if defined(HAVE_FILEIO)
        GR_IMAGE        *imagep;
        GR_IMAGE        *previmagep;
 
        for (imagep = listimagep; imagep; imagep = imagep->next) {
                if (imagep->id == id) {
 
                        if (listimagep == imagep)
                                listimagep = imagep->next;
                        else {
                                previmagep = listimagep;
                                while (previmagep->next != imagep)
                                        previmagep = previmagep->next;
 
                                previmagep->next = imagep->next;
                        }
 
                        GdFreeImage(imagep->id);
                        free(imagep);
                        return;
                }
        }
#endif
}
 
/* return cached image information*/
void
GrGetImageInfo(GR_IMAGE_ID id, GR_IMAGE_INFO *iip)
{
#if defined(HAVE_FILEIO)
        GdGetImageInfo(id, iip);
#else
        memset(iip, 0, sizeof(GR_IMAGE_INFO));
#endif
}
#endif /* !defined (DOS_DJGPP)|| (__PACIFIC__) || (DOS_TURBOC)) */
 
/*
 * Draw a rectangular area in the specified drawable using the specified
 * graphics context.  This differs from rectangle drawing in that the
 * color values for each pixel in the rectangle are specified.
 * The color table is indexed row by row.
 */
void
GrArea(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE height, void *pixels, int pixtype)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdArea(dp->psd, dp->x + x, dp->y + y, width, height,
                                pixels, pixtype);
                        break;
        }
}
 
/*
 * Copy a rectangle from one drawable to another or the same
 */
void
GrCopyArea(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height, GR_DRAW_ID source,
        GR_COORD srcx, GR_COORD srcy, int op)
{
        GR_DRAWABLE     *dp;
        GR_WINDOW       *swp;
        GR_PIXMAP       *spp = NULL;
        GR_DRAW_TYPE    type;
        PSD             srcpsd;
 
        srcpsd = NULL;
 
        swp = GsFindWindow(source);
        type = GsPrepareDrawing(id, gc, &dp);
        if (type == GR_DRAW_TYPE_NONE)
                return;
 
        if (swp) {
                srcpsd = swp->psd;
                srcx += swp->x;
                srcy += swp->y;
        } else {
               spp = GsFindPixmap(source);
               if (spp)
                     srcpsd = spp->psd;
        }
        if (!srcpsd)
                return;
 
#if DYNAMICREGIONS
        /*
         * Skip blit and send expose event if window is partly
         * obscured and source and destination are onscreen.
         * Also check that receiving window's first client has
         * selected for expose events.  This keeps brain-dead
         * programs that don't process exposure events somewhat working.
         */
        if (swp && (srcpsd == dp->psd) && swp->eventclients &&
            (swp->eventclients->eventmask & GR_EVENT_MASK_EXPOSURE)) {
                MWRECT          rc;
                extern MWCLIPREGION *clipregion;
 
                /* clip blit rectangle to source screen/bitmap size*/
                if(srcx+width > srcpsd->xvirtres)
                        width = srcpsd->xvirtres - srcx;
                if(srcy+height > srcpsd->yvirtres)
                        height = srcpsd->yvirtres - srcy;
 
                rc.left = srcx;
                rc.top = srcy;
                rc.right = srcx + width;
                rc.bottom = srcy + height;
 
                /*
                 * if source isn't entirely within clip region, then
                 * the blit is partly obscured and will copy some garbage.
                 * In this case, skip the blit, punt, and deliver an
                 * exposure event instead for proper display.
                 */
                if (GdRectInRegion(clipregion, &rc) != MWRECT_ALLIN) {
                        GsDeliverExposureEvent(swp, dp->x+x, dp->y+y,
                                width, height);
                        return;
                }
        }
#endif
        /* perform blit*/
        GdCheckCursor(srcpsd, srcx, srcy, srcx+width, srcy+height); /* FIXME*/
        GdBlit(dp->psd, dp->x+x, dp->y+y, width, height, srcpsd, srcx, srcy,op);
        GdFixCursor(srcpsd); /* FIXME*/
}
 
 
/*
 * Read the color values from the specified rectangular area of the
 * specified drawable into a supplied buffer.  If the drawable is a
 * window which is obscured by other windows, then the returned values
 * will include the values from the covering windows.  Regions outside
 * of the screen boundaries, or unmapped windows will return black.
 */
void
GrReadArea(GR_DRAW_ID id,GR_COORD x,GR_COORD y,GR_SIZE width,GR_SIZE height,
        GR_PIXELVAL *pixels)
{
        GR_WINDOW       *wp;
        GR_PIXMAP       *pp = NULL;
 
        if ((wp = GsFindWindow(id)) == NULL && (pp = GsFindPixmap(id)) == NULL){
                GsError(GR_ERROR_BAD_WINDOW_ID, id);
                return;
        }
 
        if (wp != NULL) {
                if (wp->unmapcount || (x >= wp->width) || (y >= wp->height) ||
                   (x + width <= 0) || (y + height <= 0)) {
                        /* long         count;
                        * GR_PIXELVAL   black;
                        *
                        * black = GdFindColor(BLACK);
                        * count = width * height;
                        * while (count-- > 0)
                        *       *pixels++ = black;
                        */
                        return;
                }
                GdReadArea(wp->psd, wp->x+x, wp->y+y, width, height, pixels);
        }
        if (pp != NULL) {
                if ((x >= pp->width) || (y >= pp->height) ||
                    (x + width <= 0) || (y + height <= 0)) {
                        return;
                }
                GdReadArea(pp->psd, x, y, width, height, pixels);
        }
}
 
/*
 * Draw a point in the specified drawable using the specified
 * graphics context.
 */
void
GrPoint(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y)
{
        GR_DRAWABLE     *dp;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdPoint(dp->psd, dp->x + x, dp->y + y);
                        break;
        }
}
 
/*
 * Draw points in the specified drawable using the specified
 * graphics context.
 */
void
GrPoints(GR_DRAW_ID id, GR_GC_ID gc, GR_COUNT count, GR_POINT *pointtable)
{
        GR_DRAWABLE     *dp;
        GR_POINT        *pp;
        GR_COUNT        i;
        PSD             psd;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        psd = dp->psd;
                        break;
                default:
                        return;
        }
 
        pp = pointtable;
        for (i = count; i-- > 0; pp++) {
                GdPoint(psd, pp->x + dp->x, pp->y + dp->y);
        }
}
 
/*
 * Draw a polygon in the specified drawable using the specified
 * graphics context.  The polygon is only complete if the first
 * point is repeated at the end.
 */
void
GrPoly(GR_DRAW_ID id, GR_GC_ID gc, GR_COUNT count, GR_POINT *pointtable)
{
        GR_DRAWABLE     *dp;
        GR_POINT        *pp;
        GR_COUNT        i;
        PSD             psd;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        psd = dp->psd;
                        break;
                default:
                        return;
        }
 
        /*
         * Here for drawing to a window.
         * Relocate all the points relative to the window.
         */
        pp = pointtable;
        for (i = count; i-- > 0; pp++) {
                pp->x += dp->x;
                pp->y += dp->y;
        }
 
        GdPoly(psd, count, pointtable);
 
#ifdef NONETWORK   
        /*
         * The following is only necessary when the server
         * isn't a separate process.  We don't want to change the
         * user's arguments!
         */
        pp = pointtable;
        for (i = count; i-- > 0; pp++) {
                pp->x -= dp->x;
                pp->y -= dp->y;
        }
#endif
}
 
/*
 * Draw a filled polygon in the specified drawable using the specified
 * graphics context.  The last point may be a duplicate of the first
 * point, but this is not required.
 */
void
GrFillPoly(GR_DRAW_ID id, GR_GC_ID gc, GR_COUNT count, GR_POINT *pointtable)
{
        GR_DRAWABLE     *dp;
        GR_POINT        *pp;
        GR_COUNT        i;
        PSD             psd;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        psd = dp->psd;
                        break;
                default:
                        return;
        }
 
        /*
         * Here for drawing to a window.
         * Relocate all the points relative to the window.
         */
        pp = pointtable;
        for (i = count; i-- > 0; pp++) {
                pp->x += dp->x;
                pp->y += dp->y;
        }
 
        GdFillPoly(psd, count, pointtable);
 
#ifdef NONETWORK
        /*
         * The following is only necessary when the server
         * isn't a separate process.  We don't want to change the
         * user's arguments!
         */
        pp = pointtable;
        for (i = count; i-- > 0; pp++) {
                pp->x -= dp->x;
                pp->y -= dp->y;
        }
#endif   
}
 
/*
 * Draw a text string in the specified drawable using the
 * specified graphics context.
 */
void
GrText(GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, void *str,
        GR_COUNT count, int flags)
{
        GR_DRAWABLE     *dp;
 
        /* default to baseline alignment if none specified*/
        if((flags&(MWTF_TOP|MWTF_BASELINE|MWTF_BOTTOM)) == 0)
                flags |= MWTF_BASELINE;
 
        switch (GsPrepareDrawing(id, gc, &dp)) {
                case GR_DRAW_TYPE_WINDOW:
                case GR_DRAW_TYPE_PIXMAP:
                        GdText(dp->psd, dp->x + x, dp->y + y, str, count,flags);
                        break;
        }
}
 
/* Return the system palette entries*/
void
GrGetSystemPalette(GR_PALETTE *pal)
{
        /* return 0 count if not in palettized mode*/
        memset(pal, 0, sizeof(GR_PALETTE *));
 
        if(rootwp->psd->pixtype == MWPF_PALETTE) {
                pal->count = (int)rootwp->psd->ncolors;
                GdGetPalette(rootwp->psd, 0, pal->count, pal->palette);
        }
}
 
/* Set the system palette entries from first for count*/
void
GrSetSystemPalette(GR_COUNT first, GR_PALETTE *pal)
{
        GdSetPalette(rootwp->psd, first, pal->count, pal->palette);
        if (first == 0)
                GsRedrawScreen();
}
 
/* Convert passed color value to pixel value, depending on system mode*/
void
GrFindColor(GR_COLOR c, GR_PIXELVAL *retpixel)
{
        *retpixel = GdFindColor(c);
}
 
/* visible =0, no cursor change; =1, show; else hide*/
void
GrInjectPointerEvent(GR_COORD x, GR_COORD y, int button, int visible)
{
        if (visible != 0) {
                if (visible == 1)
                        GdShowCursor(&scrdev);
                else
                        GdHideCursor(&scrdev);
        }
 
        GdMoveMouse(x, y);
        GsHandleMouseStatus(x, y, button);
}
 
void
GrInjectKeyboardEvent(GR_WINDOW_ID wid, GR_KEY keyvalue, GR_KEYMOD modifiers,
        GR_SCANCODE scancode, GR_BOOL pressed)
{
        /* create a keyboard event */
        GsDeliverKeyboardEvent(wid,
                pressed? GR_EVENT_TYPE_KEY_DOWN: GR_EVENT_TYPE_KEY_UP,
                keyvalue, modifiers, scancode);
}
 
/*
 * Set certain window properties, according to flags value
 * passed in props.
 */
void
GrSetWMProperties(GR_WINDOW_ID wid, GR_WM_PROPERTIES *props)
{
        GR_WINDOW *wp;
        int tl = 0;    /* Initialized to avoid warning */
 
        /* Find the window structure (generate an error if it doesn't exist) */
        wp = GsFindWindow(wid);
        if(!wp) {
                GsError(GR_ERROR_BAD_WINDOW_ID, wid);
                return;
        }
 
        /* Set window properties*/
        if (props->flags & GR_WM_FLAGS_PROPS)
                wp->props = props->props;
 
        /* Set window title*/
        if (props->flags & GR_WM_FLAGS_TITLE) {
                /* Remove the old title if it exists */
                if(wp->title)
                        free(wp->title);
 
                /* Calculate the space needed to store the new title */
                if(props->title)
                        tl = strlen(props->title) + 1;
 
                /* Check for empty title*/
                if(!props->title || tl == 1) {
                        wp->title = NULL;
                } else {
                        /* Otherwise, allocate some space for the new title */
                        if(!(wp->title = malloc(tl)))
                                GsError(GR_ERROR_MALLOC_FAILED, wid);
                        else
                                memcpy(wp->title, props->title, tl);
                }
        }
 
        /* Set window background*/
        if (props->flags & GR_WM_FLAGS_BACKGROUND) {
                if (wp->background != props->background) {
                        wp->background = props->background;
                        GsExposeArea(wp, wp->x, wp->y, wp->width, wp->height,
                                NULL);
                }
        }
 
        /* Set window border size*/
        if (props->flags & GR_WM_FLAGS_BORDERSIZE) {
                if (wp->bordersize != props->bordersize) {
                        GsWpUnmapWindow(wp, GR_TRUE);
                        wp->bordersize = props->bordersize;
                        GsWpMapWindow(wp, GR_TRUE);
                }
        }
 
        /* Set window border color*/
        if (props->flags & GR_WM_FLAGS_BORDERCOLOR) {
                if (wp->bordercolor != props->bordercolor) {
                        wp->bordercolor = props->bordercolor;
                        if (wp->bordersize)
                                GsDrawBorder(wp);
                }
        }
}
 
/*
 * Return all window properties
 */
void
GrGetWMProperties(GR_WINDOW_ID wid, GR_WM_PROPERTIES *props)
{
        GR_WINDOW *wp;
 
        /* Find the window structure, no error on invalid window id*/
        wp = GsFindWindow(wid);
        if(!wp) {
                /* set flags to 0 on bad window id*/
                memset(props, 0, sizeof(GR_WM_PROPERTIES));
                return;
        }
 
        /* Return everything, regardless of props->flags*/
        props->flags = GR_WM_FLAGS_PROPS | GR_WM_FLAGS_TITLE |
                GR_WM_FLAGS_BACKGROUND | GR_WM_FLAGS_BORDERSIZE |
                GR_WM_FLAGS_BORDERCOLOR;
        props->props = wp->props;
        props->title = wp->title;
        props->background = wp->background;
        props->bordersize = wp->bordersize;
        props->bordercolor = wp->bordercolor;
}
 
void
GrCloseWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW *wp;
 
        /* Find the window structure (generate an error if it doesn't exist) */
        wp = GsFindWindow(wid);
        if(!wp) {
                /*
                 * no error for now, client/server problems
                 * with nxwm when sent
                 */
                /*GsError(GR_ERROR_BAD_WINDOW_ID, wid);*/
                return;
        }
 
        /* Send a CLOSE_REQ event to the client */
        GsDeliverGeneralEvent(wp, GR_EVENT_TYPE_CLOSE_REQ, NULL);
}
 
void
GrKillWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW *wp;
 
        /* Find the window structure (generate an error if it doesn't exist) */
        wp = GsFindWindow(wid);
        if(!wp) {
                GsError(GR_ERROR_BAD_WINDOW_ID, wid);
                return;
        }
 
        /* Forcibly kill the connection to the client */
        GsClose(wp->owner->id);
}
 
/*
 * GrGetSystemColor color scheme definitions
 */
/* define color scheme: A (tan), B (winstd) or C (old)*/
#define A
 
#define A_RGB(r,g,b)
#define B_RGB(r,g,b)
#define C_RGB(r,g,b)
 
#ifdef A
#undef  A_RGB
#define A_RGB(r,g,b)    GR_RGB(r,g,b),
#endif
#ifdef B
#undef  B_RGB
#define B_RGB(r,g,b)    GR_RGB(r,g,b),
#endif
#ifdef C
#undef  C_RGB
#define C_RGB(r,g,b)    GR_RGB(r,g,b),
#endif
 
#define MAXSYSCOLORS    20      /* # of GR_COLOR_* system colors*/
 
static GR_COLOR sysColors[MAXSYSCOLORS] = {
        /* desktop background*/
        GR_RGB(  0, 128, 128),  /* GR_COLOR_DESKTOP             */
 
        /* caption colors*/
        A_RGB(128,   0,   0)      /* GR_COLOR_ACTIVECAPTION       */
        B_RGB(128,   0, 128)     /* GR_COLOR_ACTIVECAPTION       */
        C_RGB(128,   0, 128)     /* GR_COLOR_ACTIVECAPTION       */
        GR_RGB(255, 255, 255),  /* GR_COLOR_ACTIVECAPTIONTEXT   */
        A_RGB(162, 141, 104)    /* GR_COLOR_INACTIVECAPTION     */
        B_RGB(128, 128, 128)    /* GR_COLOR_INACTIVECAPTION     */
        C_RGB(  0,  64, 128)     /* GR_COLOR_INACTIVECAPTION     */
        GR_RGB(192, 192, 192),  /* GR_COLOR_INACTIVECAPTIONTEXT */
 
        /* 3d border shades*/
        GR_RGB(  0,   0,   0),  /* GR_COLOR_WINDOWFRAME         */
        A_RGB(162, 141, 104)    /* GR_COLOR_BTNSHADOW           */
        B_RGB(128, 128, 128)    /* GR_COLOR_BTNSHADOW           */
        C_RGB(128, 128, 128)    /* GR_COLOR_BTNSHADOW           */
        A_RGB(213, 204, 187)    /* GR_COLOR_3DLIGHT             */
        B_RGB(223, 223, 223)    /* GR_COLOR_3DLIGHT             */
        C_RGB(192, 192, 192)    /* GR_COLOR_3DLIGHT             */
        A_RGB(234, 230, 221)    /* GR_COLOR_BTNHIGHLIGHT        */
        B_RGB(255, 255, 255)    /* GR_COLOR_BTNHIGHLIGHT        */
        C_RGB(223, 223, 223)    /* GR_COLOR_BTNHIGHLIGHT        */
 
        /* top level application window backgrounds/text*/
        A_RGB(213, 204, 187)    /* GR_COLOR_APPWINDOW           */
        B_RGB(192, 192, 192)    /* GR_COLOR_APPWINDOW           */
        C_RGB(160, 160, 160)    /* GR_COLOR_APPWINDOW           */
        GR_RGB(  0,   0,   0),  /* GR_COLOR_APPTEXT             */
 
        /* button control backgrounds/text (usually same as app window colors)*/
        A_RGB(213, 204, 187)    /* GR_COLOR_BTNFACE             */
        B_RGB(192, 192, 192)    /* GR_COLOR_BTNFACE             */
        C_RGB(160, 160, 160)    /* GR_COLOR_BTNFACE             */
        GR_RGB(  0,   0,   0),  /* GR_COLOR_BTNTEXT             */
 
        /* edit/listbox control backgrounds/text, selected highlights*/
        GR_RGB(255, 255, 255),  /* GR_COLOR_WINDOW              */
        GR_RGB(  0,   0,   0),  /* GR_COLOR_WINDOWTEXT          */
        GR_RGB(128,   0,   0),  /* GR_COLOR_HIGHLIGHT           */
        GR_RGB(255, 255, 255),  /* GR_COLOR_HIGHLIGHTTEXT       */
        GR_RGB( 64,  64,  64),  /* GR_COLOR_GRAYTEXT            */
 
        /* menu backgrounds/text*/
        A_RGB(213, 204, 187)    /* GR_COLOR_MENU                */
        B_RGB(192, 192, 192)    /* GR_COLOR_MENU                */
        C_RGB(160, 160, 160)    /* GR_COLOR_MENU                */
        GR_RGB(  0,   0,   0),  /* GR_COLOR_MENUTEXT            */
};
 
/* Return system-defined color*/
GR_COLOR
GrGetSysColor(int index)
{
        if(index >= 0 && index < MAXSYSCOLORS)
                return sysColors[index];
        return 0;
}
 
void
GrSetScreenSaverTimeout(GR_TIMEOUT timeout)
{
        MWTIMER *timer;
 
        screensaver_delay = timeout * 1000;
 
        if((timer = GdFindTimer(GsActivateScreenSaver)))
                GdDestroyTimer(timer);
 
        /* 0 timeout cancels timer*/
        if (timeout == 0)
                return;
 
        GdAddTimer(screensaver_delay, GsActivateScreenSaver,
                                        GsActivateScreenSaver);
}
 
void
GrSetSelectionOwner(GR_WINDOW_ID wid, GR_CHAR *typelist)
{
        GR_WINDOW_ID oldwid = selection_owner.wid;
 
        if(selection_owner.typelist) free(selection_owner.typelist);
 
        selection_owner.wid = wid;
 
        if(wid) {
                if(!(selection_owner.typelist = strdup(typelist))) {
                        GsError(GR_ERROR_MALLOC_FAILED, wid);
                        selection_owner.wid = 0;
                }
        } else selection_owner.typelist = NULL;
 
        GsDeliverSelectionChangedEvent(oldwid, wid);
}
 
GR_WINDOW_ID
GrGetSelectionOwner(GR_CHAR **typelist)
{
        *typelist = selection_owner.typelist;
        return selection_owner.wid;
}
 
void
GrRequestClientData(GR_WINDOW_ID wid, GR_WINDOW_ID rid, GR_SERIALNO serial,
                                                        GR_MIMETYPE mimetype)
{
        GsDeliverClientDataReqEvent(rid, wid, serial, mimetype);
}
 
void
GrSendClientData(GR_WINDOW_ID wid, GR_WINDOW_ID did, GR_SERIALNO serial,
                                GR_LENGTH len, GR_LENGTH thislen, void *data)
{
        void *p;
 
        if(!(p = malloc(len))) {
                GsError(GR_ERROR_MALLOC_FAILED, wid);
                return;         /* FIXME note no error to application*/
        }
        memcpy(p, data, thislen);
 
        GsDeliverClientDataEvent(did, wid, serial, len, thislen, p);
}
 
/*
 * Set a window's background pixmap.  Note that this doesn't
 * cause a screen refresh, use GrClearWindow if required.
 */
void
GrSetBackgroundPixmap(GR_WINDOW_ID wid, GR_WINDOW_ID pixmap, int flags)
{
        GR_WINDOW *wp;
        GR_PIXMAP *pp = NULL;
 
        if (!(wp = GsFindWindow(wid))) {
                GsError(GR_ERROR_BAD_WINDOW_ID, wid);
                return;
        }
 
        if (pixmap && !(pp = GsFindPixmap(pixmap))) {
                GsError(GR_ERROR_BAD_WINDOW_ID, pixmap);
                return;
        }
        wp->bgpixmap = pp;
        wp->bgpixmapflags = flags;
}
 
void
GrGetFontList(GR_FONTLIST ***fonts, int *numfonts)
{
        GdGetFontList(fonts,numfonts);
}
 
void
GrFreeFontList(GR_FONTLIST ***fonts, int num)
{
        GdFreeFontList(fonts, num);
}
 
/*
 * Return window parent and list of children.
 * Caller must free() children list after use.
 */
void
GrQueryTree(GR_WINDOW_ID wid, GR_WINDOW_ID *parentid, GR_WINDOW_ID **children,
        GR_COUNT *nchildren)
{
        GR_WINDOW       *wp;
        GR_WINDOW       *cp;
        GR_WINDOW_ID    *retarray;
        GR_COUNT        n = 0;
 
        wp = GsFindWindow(wid);
        if (!wp) {
                *parentid = 0;
nochildren:
                *children = NULL;
                *nchildren = 0;
                return;
        }
        *parentid = wp->parent? wp->parent->id: 0;
 
        /* count children for alloc*/
        for(cp=wp->children; cp; cp=cp->siblings)
                ++n;
        if (n == 0)
                goto nochildren;
 
        /* alloc return child array*/
        retarray = (GR_WINDOW_ID *)malloc(n * sizeof(GR_WINDOW_ID));
        if (!retarray) {
                GsError(GR_ERROR_MALLOC_FAILED, 0);
                goto nochildren;
        }
 
        /* fill in return array*/
        n = 0;
        for(cp=wp->children; cp; cp=cp->siblings) {
                retarray[n++] = cp->id;
        }
        *children = retarray;
        *nchildren = n;
}
 
 
static int next_timer_id = 1000;
 
/**
 * GrCreateTimer:
 * @wid: the ID of the window to use as a destination for GR_TIMER_EVENT
 *      events that result from this timer.
 * @period: the timer period in milliseconds
 * @Returns: the ID of the newly created timer, or 0 if failure.
 *
 * Creates a Nano-X timer with the specified period.
 * NOTE: There is a potential for more GR_TIMER_EVENTS to be queued
 * in the connection between the Nano-X server and client.  The client
 * should be able to handle late arriving GR_TIMER_EVENTs.
 */
GR_TIMER_ID
GrCreateTimer (GR_WINDOW_ID wid, GR_TIMEOUT period)
{
    GR_TIMER  *timer;
 
    /* Create a nano-X layer timr */
    timer = (GR_TIMER*) malloc (sizeof (GR_TIMER));
    if (timer == NULL)
    {
        GsError (GR_ERROR_MALLOC_FAILED, 0);
        return 0;
    }
 
    /* Create a device independent layer timer */
    timer->timer = GdAddPeriodicTimer (period, GsTimerCB, timer);
    if (timer->timer == NULL)
    {
        free (timer);
        GsError (GR_ERROR_MALLOC_FAILED, 0);
        return 0;
    }
 
    /*
     * Fill in the rest of the timer structure, and
     * link the new timer into the servers list of timers.
     */
    timer->id    = next_timer_id++;
    timer->owner = curclient;
    timer->wid   = wid;
    timer->next  = list_timer;
    list_timer   = timer;
 
    return timer->id;
}
 
/**
 * GrDestroyTimer:
 * @tid: the ID of the timer to destroy
 *
 * Destroys a timer previously created with GrCreateTimer().
 */
void
GrDestroyTimer (GR_TIMER_ID tid)
{
    GR_TIMER  *timer;
    GR_TIMER  *prev_timer;
 
    /* Find the timer structure that corresponds to "tid" */
    timer = GsFindTimer (tid);
    if (timer == NULL)
        return;
 
    if (tid == cache_timer_id)
    {
        cache_timer_id = 0;
        cache_timer = NULL;
    }
 
    /* Delete the timer from the device independent engine layer */
    GdDestroyTimer (timer->timer);
 
    /* Pull the timer out of the servers list */
    if (list_timer == timer)
    {
        list_timer = timer->next;
    }
    else
    {
        prev_timer = list_timer;
        while (prev_timer->next != timer)
        {
            prev_timer = prev_timer->next;
        }
        prev_timer->next = timer->next;
    }
    free (timer);
}
 
/**
 * GrSetPortraitMode
 * @newmode: new portrait mode
 *
 * Sets new server portrait mode and redraws all windows.
 */
void
GrSetPortraitMode(int portraitmode)
{
        GsSetPortraitMode(portraitmode);
}
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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [nanox/] [srvfunc.c] - Blame information for rev 174

Line No.	Rev	Author	Line
1	27	unneback	`/*`
2			`* Copyright (c) 1999, 2000, 2001 Greg Haerr <greg@censoft.com>`
3			`* Copyright (c) 2000 Alex Holden <alex@linuxhacker.org>`
4			`* Copyright (c) 1991 David I. Bell`
5			`* Permission is granted to use, distribute, or modify this source,`
6			`* provided that this copyright notice remains intact.`
7			`*/`
8			`#include <stdio.h>`
9			`#include <stdlib.h>`
10			`#include <string.h>`
11			`#define MWINCLUDECOLORS`
12			`#include "serv.h"`
13
14			`static int nextid = GR_ROOT_WINDOW_ID + 1;`
15
16			`static void CheckNextEvent(GR_EVENT *ep, GR_BOOL doSelect);`
17
18			`/*`
19			`* Return information about the screen for clients to use.`
20			`*/`
21			`void`
22			`GrGetScreenInfo(GR_SCREEN_INFO *sip)`
23			`{`
24			`GdGetScreenInfo(rootwp->psd, sip);`
25
26			`/* virtual/workspace screen sizing*/`
27			`#if 0`
28			`/* force small screen for emulation purposes*/`
29			`sip->vs_width = 240; /* PDA*/`
30			`sip->vs_height = 320;`
31			`sip->ws_width = 240;`
32			`sip->ws_height = 298;`
33			`#else`
34			`/* set workspace equal to screen area minus 22 pixel taskbar*/`
35			`sip->vs_width = sip->cols;`
36			`sip->vs_height = sip->rows;`
37			`sip->ws_width = sip->cols;`
38			`sip->ws_height = sip->rows - 22;`
39			`#endif`
40			`}`