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

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/*
 * Copyright (c) 2000 Greg Haerr <greg@censoft.com>
 * Copyright (c) 1991 David I. Bell
 * Permission is granted to use, distribute, or modify this source,
 * provided that this copyright notice remains intact.
 *
 * Graphics server utility routines for windows.
 */
#include <stdio.h>
#include <stdlib.h>
 
#ifndef __PACIFIC__
#include <fcntl.h>
#endif
 
#include "serv.h"
 
/*
 * Help prevent future bugs by defining this variable to an illegal value.
 * These routines should not be referencing this, but should be using
 * unmapcount instead.
 */
#define mapped  cannotusemapped
 
/*
 * Redraw the screen completely.
 */
void
GsRedrawScreen(void)
{
        /* Redraw all windows*/
        GsExposeArea(rootwp, 0, 0, rootwp->width, rootwp->height, NULL);
}
 
/*
 * Activate Screen Saver.
 */
void
GsActivateScreenSaver(void *arg)
{
        screensaver_active = GR_TRUE;
        GsDeliverScreenSaverEvent(GR_TRUE);
}
 
/*
 * Deactivate screen saver and reset timer if active.
 */
void
GsResetScreenSaver(void)
{
        MWTIMER *timer;
 
        if(screensaver_active == GR_TRUE) {
                screensaver_active = GR_FALSE;
                GsDeliverScreenSaverEvent(GR_FALSE);
        }
        if(screensaver_delay) {
                if((timer = GdFindTimer(GsActivateScreenSaver)))
                        GdDestroyTimer(timer);
                GdAddTimer(screensaver_delay, GsActivateScreenSaver,
                        GsActivateScreenSaver);
        }
}
 
void
GsTimerCB (void *arg)
{
    GR_TIMER *timer = (GR_TIMER*) arg;
 
    GsDeliverTimerEvent (timer->owner, timer->wid, timer->id);
}
 
 
/*
 * Unmap the window to make it and its children invisible on the screen.
 * This is a recursive routine which increments the unmapcount values for
 * this window and all of its children, and causes exposure events for
 * windows which are newly uncovered.
 * If temp_unmap set, don't reset focus or generate mouse/focus events,
 * as window will be mapped again momentarily (window move, resize, etc)
 */
void GsWpUnmapWindow(GR_WINDOW *wp, GR_BOOL temp_unmap)
{
        GR_WINDOW       *pwp;           /* parent window */
        GR_WINDOW       *sibwp;         /* sibling window */
        GR_WINDOW       *childwp;       /* child window */
        GR_SIZE         bs;             /* border size of this window */
 
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wp->id);
                return;
        }
 
        if (wp == clipwp)
                clipwp = NULL;
 
        ++wp->unmapcount;
 
        for (childwp = wp->children; childwp; childwp = childwp->siblings)
                GsWpUnmapWindow(childwp, temp_unmap);
 
        if (!temp_unmap && wp == mousewp) {
                GsCheckMouseWindow();
                GsCheckCursor();
        }
 
        if (!temp_unmap && wp == focuswp) {
                if (focusfixed)
                        /* don't revert to mouse enter/leave focus if fixed*/
                        focuswp = rootwp;
                else {
                        focusfixed = GR_FALSE;
                        GsCheckFocusWindow();
                }
        }
 
        /* Send update event if just unmapped*/
        if (wp->unmapcount == 1) {
                GsDeliverUpdateEvent(wp,
                        (temp_unmap? GR_UPDATE_UNMAPTEMP: GR_UPDATE_UNMAP),
                        0, 0, 0, 0);
        }
 
        /*
         * If this is an input-only window or the parent window is
         * still unmapped, then we are all done.
         */
        if (!wp->output || wp->parent->unmapcount)
                return;
 
        /*
         * Clear the area in the parent for this window, causing an
         * exposure event for it.  Take into account the border size.
         */
        bs = wp->bordersize;
        pwp = wp->parent;
        GsWpClearWindow(pwp, wp->x - pwp->x - bs, wp->y - pwp->y - bs,
                wp->width + bs * 2, wp->height + bs * 2, GR_TRUE);
 
        /*
         * Finally clear and redraw all parts of our lower sibling
         * windows that were covered by this window.
         */
        sibwp = wp;
        while (sibwp->siblings) {
                sibwp = sibwp->siblings;
                GsExposeArea(sibwp, wp->x - bs, wp->y - bs,
                        wp->width + bs * 2, wp->height + bs * 2, NULL);
        }
}
 
/*
 * Map the window to possibly make it and its children visible on the screen.
 * This is a recursive routine which decrements the unmapcount values for
 * this window and all of its children, and causes exposure events for
 * those windows which become visible.
 * If temp is set, then window is being mapped again after a temporary
 * unmap, so don't reset focus or generate mouse/focus events.
 */
void GsWpMapWindow(GR_WINDOW *wp, GR_BOOL temp)
{
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wp->id);
                return;
        }
 
        if (wp->unmapcount)
                --wp->unmapcount;
 
        if (!temp && wp->unmapcount == 0) {
                GsCheckMouseWindow();
                GsCheckFocusWindow();
                GsCheckCursor();
        }
 
        /* send update event if just mapped*/
        if (wp->unmapcount == 0) {
                GsDeliverUpdateEvent(wp, GR_UPDATE_MAP, wp->x, wp->y,
                        wp->width, wp->height);
        }
 
        /*
         * If the window is an output window and just became visible,
         * then draw its border, clear it to the background color, and
         * generate an exposure event.
         */
        if (wp->output && (wp->unmapcount == 0)) {
                GsDrawBorder(wp);
                GsWpClearWindow(wp, 0, 0, wp->width, wp->height, GR_TRUE);
        }
 
        /*
         * Do the same thing for the children.
         */
        for (wp = wp->children; wp; wp = wp->siblings)
                GsWpMapWindow(wp, temp);
}
 
/*
 * Destroy the specified window, and all of its children.
 * This is a recursive routine.
 */
void GsWpDestroyWindow(GR_WINDOW *wp)
{
        GR_WINDOW       *prevwp;        /* previous window pointer */
        GR_EVENT_CLIENT *ecp;           /* selections for window */
        GR_WINDOW_ID    oldwid;         /* old selection owner */
 
        if (wp == rootwp) {
                GsError(GR_ERROR_ILLEGAL_ON_ROOT_WINDOW, wp->id);
                return;
        }
 
        /* Disable selection if this window is the owner */
        if(selection_owner.wid == wp->id) {
                oldwid = selection_owner.wid;
                selection_owner.wid = 0;
                if(selection_owner.typelist) free(selection_owner.typelist);
                GsDeliverSelectionChangedEvent(oldwid, 0);
        }
 
        /*
         * Unmap the window first.
         */
        if (wp->unmapcount == 0)
                GsWpUnmapWindow(wp, GR_FALSE);
 
        /* send update event*/
        GsDeliverUpdateEvent(wp, GR_UPDATE_DESTROY, wp->x, wp->y,
                wp->width, wp->height);
 
        /*
         * Destroy all children.
         */
        while (wp->children)
                GsWpDestroyWindow(wp->children);
 
        /*
         * Free all client selection structures.
         */
        while (wp->eventclients) {
                ecp = wp->eventclients;
                wp->eventclients = ecp->next;
                free(ecp);
        }
 
        /*
         * Remove this window from the child list of its parent.
         */
        prevwp = wp->parent->children;
        if (prevwp == wp)
                wp->parent->children = wp->siblings;
        else {
                while (prevwp->siblings != wp)
                        prevwp = prevwp->siblings;
                prevwp->siblings = wp->siblings;
        }
        wp->siblings = NULL;
 
        /*
         * Remove this window from the complete list of windows.
         */
        prevwp = listwp;
        if (prevwp == wp)
                listwp = wp->next;
        else {
                while (prevwp->next != wp)
                        prevwp = prevwp->next;
                prevwp->next = wp->next;
        }
        wp->next = NULL;
 
        /*
         * Forget various information if they related to this window.
         * Then finally free the structure.
         */
        if (wp == clipwp)
                clipwp = NULL;
        if (wp == grabbuttonwp)
                grabbuttonwp = NULL;
        if (wp == cachewp) {
                cachewindowid = 0;
                cachewp = NULL;
        }
        if (wp == focuswp) {
                /* don't revert to mouse enter/leave focus if fixed*/
                /*focusfixed = GR_FALSE;*/
                focuswp = rootwp;
        }
 
        GsCheckMouseWindow();
 
        if(wp->title)
                free(wp->title);
 
        free(wp);
}
 
/*
 * Draw a window's background pixmap.
 *
 * The flags mean:
 *   GR_BACKGROUND_TILE- tile the pixmap across the window (default).
 *   GR_BACKGROUND_TOPLEFT- draw the pixmap at (0,0) relative to the window.
 *   GR_BACKGROUND_CENTER- draw the pixmap in the middle of the window.
 *   GR_BACKGROUND_STRETCH- stretch the pixmap within the window.
 *   GR_BACKGROUND_TRANS- if the pixmap is smaller than the window and not
 *     using tile mode, there will be gaps around the pixmap. This flag causes
 *     to not fill in the spaces with the background colour.
 */
void GsWpDrawBackgroundPixmap(GR_WINDOW *wp, GR_PIXMAP *pm, GR_COORD x,
        GR_COORD y, GR_SIZE width, GR_SIZE height)
{
        GR_SIZE destwidth, destheight, fillwidth, fillheight, pmwidth, pmheight;
        GR_COORD fromx, fromy, destx, desty, pixmapx = 0, pixmapy = 0;
 
        if(wp->bgpixmapflags & (GR_BACKGROUND_TOPLEFT|GR_BACKGROUND_STRETCH)) {
                pixmapx = 0;
                pixmapy = 0;
        } else if(wp->bgpixmapflags & GR_BACKGROUND_CENTER) {
                if(pm->width >= wp->width) pixmapx = 0;
                else pixmapx = (wp->width - pm->width) / 2;
                if(pm->height >= wp->height) pixmapy = 0;
                else pixmapy = (wp->height - pm->height) / 2;
        } else {
                /* GR_BACKGROUND_TILE (default)*/
                GsWpTileBackgroundPixmap(wp, pm, x, y, width, height);
                return;
        }
 
        if(pm->width > wp->width) pmwidth = wp->width;
        else pmwidth = pm->width;
        if(pm->height > wp->height) pmheight = wp->height;
        else pmheight = pm->height;
 
        if(x > pixmapx) {
                destx = x;
                fromx = x - pixmapx;
                destwidth = pixmapx + pmwidth - x;
        } else {
                destx = pixmapx;
                fromx = 0;
                destwidth = x + width - pixmapx;
        }
 
        if(y > pixmapy) {
                desty = y;
                fromy = y - pixmapy;
                destheight = pixmapy + pmheight - desty;
        } else {
                desty = pixmapy;
                fromy = 0;
                destheight = y + height - pixmapy;
        }
 
        if(destwidth > 0 && destheight > 0) {
                if (wp->bgpixmapflags & GR_BACKGROUND_STRETCH) {
                        GdStretchBlit(wp->psd, destx + wp->x, desty + wp->y,
                                destwidth, destheight, pm->psd, fromx, fromy,
                                pm->width, pm->height, MWROP_COPY);
                } else GdBlit(wp->psd, destx + wp->x, desty + wp->y, destwidth,
                        destheight, pm->psd, fromx, fromy, MWROP_COPY);
        }
 
        if(wp->bgpixmapflags & (GR_BACKGROUND_TRANS|GR_BACKGROUND_STRETCH))
                return;
 
        /* Fill in the gaps around the pixmap */
        if(x < pixmapx) {
                fillwidth = pixmapx - x;
                if(fillwidth > width) fillwidth = width;
                fillheight = height;
                GdFillRect(wp->psd, wp->x + x, wp->y + y, fillwidth,fillheight);
        }
        if((x + width) > (pixmapx + pmwidth)) {
                fillwidth = (x + width) - (pixmapx + pmwidth);
                if(fillwidth > width) fillwidth = width;
                fillheight = height;
                if(x < (pixmapx + pmwidth)) destx = pixmapx + pmwidth + wp->x;
                else destx = x + wp->x;
                GdFillRect(wp->psd, destx, wp->y + y, fillwidth, fillheight);
        }
        if(y < pixmapy) {
                fillheight = pixmapy - y;
                if(fillheight > height) fillheight = height;
                if(x < pixmapx) destx = pixmapx + wp->x;
                else destx = x + wp->x;
                if((x + width) > (pixmapx + pmwidth))
                        fillwidth = pixmapx + pmwidth - destx;
                else fillwidth = x + width - destx;
                if((fillwidth > 0) && (fillheight > 0)) {
                        GdFillRect(wp->psd, destx, wp->y + y, fillwidth,
                                                        fillheight);
                }
        }
        if((y + height) > (pixmapy + pmheight)) {
                fillheight = (y + height) - (pixmapy + pmheight);
                if(fillheight > height) fillheight = height;
                if(x < pixmapx) destx = pixmapx + wp->x;
                else destx = x + wp->x;
                if(y < (pixmapy + pmheight)) desty = pixmapy + pmheight + wp->y;
                else desty = y + wp->y;
 
                if((x + width) > (pixmapx + pmwidth))
                        fillwidth = pixmapx + pmwidth - destx;
                else fillwidth = x + width - destx;
                if((fillwidth > 0) && (fillheight > 0)) {
                        GdFillRect(wp->psd, destx, desty, fillwidth,fillheight);
                }
        }
}
 
/*
 * Draw a tiled pixmap window background.
 */
void
GsWpTileBackgroundPixmap(GR_WINDOW *wp, GR_PIXMAP *pm, GR_COORD x, GR_COORD y,
        GR_SIZE width, GR_SIZE height)
{
        GR_COORD tilex = 0, tiley = 0, fromx, fromy, cx, cy;
        GR_SIZE destwidth, destheight, pmwidth, pmheight, cwidth, cheight;
 
        if(pm->width > wp->width) pmwidth = wp->width;
        else pmwidth = pm->width;
        if(pm->height > wp->height) pmheight = wp->height;
        else pmheight = pm->height;
 
        for(;tiley < wp->height; tiley += pmheight, tilex = 0) {
                if(tiley > (y + height)) continue;
                if(y > (tiley + pmheight)) continue;
                if((tiley + pmheight) > wp->height)
                        destheight = wp->height - tiley;
                else destheight = pmheight;
                for(;tilex < wp->width; tilex += pmwidth) {
                        if(tilex > (x + width)) continue;
                        if(x > (tilex + pmwidth)) continue;
                        if((tilex + pmwidth) > wp->width)
                                destwidth = wp->width - tilex;
                        else destwidth = pmwidth;
 
                        if((tilex >= x) && ((tilex + destwidth)<=(x + width))) {
                                fromx = 0;
                                cx = tilex + wp->x;
                                cwidth = destwidth;
                        } else {
                                if(x > tilex) {
                                        fromx = x - tilex;
                                        cwidth = destwidth - fromx;
                                } else {
                                        fromx = 0;
                                        cwidth = x + width - tilex;
                                }
                                if(cwidth > width) cwidth = width;
                                if(cwidth > destwidth) cwidth = destwidth;
                                cx = wp->x + tilex + fromx;
                        }
 
                        if((tiley >= y)&&((tiley + destheight)<=(y + height))) {
                                fromy = 0;
                                cy = tiley + wp->y;
                                cheight = destheight;
                        } else {
                                if(y > tiley) {
                                        fromy = y - tiley;
                                        cheight = destheight - fromy;
                                } else {
                                        fromy = 0;
                                        cheight = y + height - tiley;
                                }
                                if(cwidth > width) cwidth = width;
                                if(cheight > destheight) cheight = destheight;
                                cy = wp->y + tiley + fromy;
                        }
 
                        if((cwidth > 0) && (cheight > 0)) {
                                GdBlit(wp->psd, cx, cy, cwidth, cheight,
                                        pm->psd, fromx, fromy, MWROP_COPY);
                        }
                }
        }
}
 
/*
 * Clear the specified area of a window and possibly make an exposure event.
 * This sets the area window to its background color or pixmap.  If the
 * exposeflag is nonzero, then this also creates an exposure event for the
 * window.
 */
void
GsWpClearWindow(GR_WINDOW *wp, GR_COORD x, GR_COORD y, GR_SIZE width,
        GR_SIZE  height, GR_BOOL exposeflag)
{
        if (wp->unmapcount || !wp->output)
                return;
        /*
         * Reduce the arguments so that they actually lie within the window.
         */
        if (x < 0) {
                width += x;
                x = 0;
        }
        if (y < 0) {
                height += y;
                y = 0;
        }
        if (x + width > wp->width)
                width = wp->width - x;
        if (y + height > wp->height)
                height = wp->height - y;
 
        /*
         * Now see if the region is really in the window.  If not, then
         * do nothing.
         */
        if ((x >= wp->width) || (y >= wp->height) || (width <= 0) ||
                (height <= 0))
                        return;
 
        /*
         * Draw the background of the window.
         * Invalidate the current graphics context since
         * we are changing the foreground color and mode.
         */
        GsSetClipWindow(wp, NULL, 0);
        curgcp = NULL;
        if (!(wp->props & GR_WM_PROPS_NOBACKGROUND)) {
                GdSetMode(GR_MODE_COPY);
                GdSetForeground(GdFindColor(wp->background));
                if (wp->bgpixmap) {
                        GsWpDrawBackgroundPixmap(wp, wp->bgpixmap, x, y,
                                width, height);
                } else {
                        GdFillRect(wp->psd, wp->x + x, wp->y + y, width,height);
                }
        }
 
        /*
         * Now do the exposure if required.
         */
        if (exposeflag)
                GsDeliverExposureEvent(wp, x, y, width, height);
}
 
/*
 * Handle the exposing of the specified absolute region of the screen,
 * starting with the specified window.  That window and all of its
 * children will be redrawn and/or exposure events generated if they
 * overlap the specified area.  This is a recursive routine.
 */
void
GsExposeArea(GR_WINDOW *wp, GR_COORD rootx, GR_COORD rooty, GR_SIZE width,
        GR_SIZE height, GR_WINDOW *stopwp)
{
        if (!wp->output || wp->unmapcount || wp == stopwp)
                return;
 
        /*
         * First see if the area overlaps the window including the border.
         * If not, then there is nothing more to do.
         */
        if ((rootx >= wp->x + wp->width + wp->bordersize) ||
                (rooty >= wp->y + wp->height + wp->bordersize) ||
                (rootx + width <= wp->x - wp->bordersize) ||
                (rooty + height <= wp->y - wp->bordersize))
                        return;
 
        /*
         * The area does overlap the window.  See if the area overlaps
         * the border, and if so, then redraw it.
         */
        if ((rootx < wp->x) || (rooty < wp->y) ||
                (rootx + width > wp->x + wp->width) ||
                (rooty + height > wp->y + wp->height))
                        GsDrawBorder(wp);
 
        /*
         * Now clear the window itself in the specified area,
         * which might cause an exposure event.
         */
        GsWpClearWindow(wp, rootx - wp->x, rooty - wp->y,
                width, height, GR_TRUE);
 
        /*
         * Now do the same for all the children.
         */
        for (wp = wp->children; wp; wp = wp->siblings)
                GsExposeArea(wp, rootx, rooty, width, height, stopwp);
}
 
/*
 * Draw the border of a window if there is one.
 * Note: To allow the border to be drawn with the correct clipping,
 * we temporarily grow the size of the window to include the border.
 */
void GsDrawBorder(GR_WINDOW *wp)
{
        GR_COORD        lminx;          /* left edge minimum x */
        GR_COORD        rminx;          /* right edge minimum x */
        GR_COORD        tminy;          /* top edge minimum y */
        GR_COORD        bminy;          /* bottom edge minimum y */
        GR_COORD        topy;           /* top y value of window */
        GR_COORD        boty;           /* bottom y value of window */
        GR_SIZE         width;          /* original width of window */
        GR_SIZE         height;         /* original height of window */
        GR_SIZE         bs;             /* border size */
 
        bs = wp->bordersize;
        if (bs <= 0)
                return;
 
        width = wp->width;
        height = wp->height;
        lminx = wp->x - bs;
        rminx = wp->x + width;
        tminy = wp->y - bs;
        bminy = wp->y + height;
        topy = wp->y;
        boty = bminy - 1;
 
        wp->x -= bs;
        wp->y -= bs;
        wp->width += (bs * 2);
        wp->height += (bs * 2);
        wp->bordersize = 0;
 
        clipwp = NULL;
        GsSetClipWindow(wp, NULL, 0);
        curgcp = NULL;
        GdSetMode(GR_MODE_COPY);
        GdSetForeground(GdFindColor(wp->bordercolor));
 
        if (bs == 1) {
                GdLine(wp->psd, lminx, tminy, rminx, tminy, TRUE);
                GdLine(wp->psd, lminx, bminy, rminx, bminy, TRUE);
                GdLine(wp->psd, lminx, topy, lminx, boty, TRUE);
                GdLine(wp->psd, rminx, topy, rminx, boty, TRUE);
        } else {
                GdFillRect(wp->psd, lminx, tminy, width + bs * 2, bs);
                GdFillRect(wp->psd, lminx, bminy, width + bs * 2, bs);
                GdFillRect(wp->psd, lminx, topy, bs, height);
                GdFillRect(wp->psd, rminx, topy, bs, height);
        }
 
        /*
         * Restore the true window size.
         * Forget the currently clipped window since we messed it up.
         */
        wp->x += bs;
        wp->y += bs;
        wp->width -= (bs * 2);
        wp->height -= (bs * 2);
        wp->bordersize = bs;
        clipwp = NULL;
}
 
/*
 * Check to see if the first window overlaps the second window.
 */
GR_BOOL GsCheckOverlap(GR_WINDOW *topwp, GR_WINDOW *botwp)
{
        GR_COORD        minx1;
        GR_COORD        miny1;
        GR_COORD        maxx1;
        GR_COORD        maxy1;
        GR_COORD        minx2;
        GR_COORD        miny2;
        GR_COORD        maxx2;
        GR_COORD        maxy2;
        GR_SIZE         bs;
 
        if (!topwp->output || topwp->unmapcount || botwp->unmapcount)
                return GR_FALSE;
 
        bs = topwp->bordersize;
        minx1 = topwp->x - bs;
        miny1 = topwp->y - bs;
        maxx1 = topwp->x + topwp->width + bs - 1;
        maxy1 = topwp->y + topwp->height + bs - 1;
 
        bs = botwp->bordersize;
        minx2 = botwp->x - bs;
        miny2 = botwp->y - bs;
        maxx2 = botwp->x + botwp->width + bs - 1;
        maxy2 = botwp->y + botwp->height + bs - 1;
 
        if ((minx1 > maxx2) || (minx2 > maxx1) || (miny1 > maxy2)
                || (miny2 > maxy1))
                        return GR_FALSE;
 
        return GR_TRUE;
}
 
/*
 * Return a pointer to the window structure with the specified window id.
 * Returns NULL if the window does not exist.
 */
GR_WINDOW *
GsFindWindow(GR_WINDOW_ID id)
{
        GR_WINDOW       *wp;            /* current window pointer */
 
        /*
         * See if this is the root window or the same window as last time.
         */
        if (id == GR_ROOT_WINDOW_ID)
                return rootwp;
 
        if ((id == cachewindowid) && id)
                return cachewp;
 
        /*
         * No, search for it and cache it for future calls.
         */
        for (wp = listwp; wp; wp = wp->next) {
                if (wp->id == id) {
                        cachewindowid = id;
                        cachewp = wp;
                        return wp;
                }
        }
 
        return NULL;
}
 
 
 
/*
 * Return a pointer to the pixmap structure with the specified window id.
 * Returns NULL if the pixmap does not exist.
 */
GR_PIXMAP *
GsFindPixmap(GR_WINDOW_ID id)
{
        GR_PIXMAP       *pp;            /* current pixmap pointer */
 
        if ((id == cachepixmapid) && id)
                return cachepp;
 
        /*
         * No, search for it and cache it for future calls.
         */
        for (pp = listpp; pp; pp = pp->next) {
                if (pp->id == id) {
                        cachepixmapid = id;
                        cachepp = pp;
                        return pp;
                }
        }
 
        return NULL;
}
 
 
/*
 * Return a pointer to the graphics context with the specified id.
 * Returns NULL if the graphics context does not exist, with an
 * error saved.
 */
GR_GC *
GsFindGC(GR_GC_ID gcid)
{
        GR_GC           *gcp;           /* current graphics context pointer */
 
        /*
         * See if this is the same graphics context as last time.
         */
        if ((gcid == cachegcid) && gcid)
                return cachegcp;
 
        /*
         * No, search for it and cache it for future calls.
         */
        for (gcp = listgcp; gcp; gcp = gcp->next) {
                if (gcp->id == gcid) {
                        cachegcid = gcid;
                        cachegcp = gcp;
                        return gcp;
                }
        }
 
        GsError(GR_ERROR_BAD_GC_ID, gcid);
 
        return NULL;
}
 
/* Return a pointer to the region with the specified id.*/
GR_REGION *
GsFindRegion(GR_REGION_ID regionid)
{
        GR_REGION       *regionp;       /* current region pointer */
 
        for (regionp = listregionp; regionp; regionp = regionp->next) {
                if (regionp->id == regionid) {
                        return regionp;
                }
        }
 
        return NULL;
}
 
/* find a font with specified id*/
GR_FONT *
GsFindFont(GR_FONT_ID fontid)
{
        GR_FONT         *fontp;
 
        for (fontp = listfontp; fontp; fontp = fontp->next) {
                if (fontp->id == fontid)
                        return fontp;
        }
        return NULL;
}
 
/* find a cursor with specified id*/
GR_CURSOR *
GsFindCursor(GR_CURSOR_ID cursorid)
{
        GR_CURSOR       *cursorp;
 
        for (cursorp = listcursorp; cursorp; cursorp = cursorp->next) {
                if (cursorp->id == cursorid)
                        return cursorp;
        }
        return NULL;
}
 
GR_TIMER *
GsFindTimer (GR_TIMER_ID timer_id)
{
    GR_TIMER   *timer;
 
    /*
     * See if this is the same graphics context as last time.
     */
    if ((timer_id == cache_timer_id) && timer_id)
        return cache_timer;
 
    /*
     * No, search for it and cache it for future calls.
     */
    for (timer = list_timer; timer != NULL; timer = timer->next)
    {
        if (timer->id == timer_id)
        {
            cache_timer_id = timer_id;
            cache_timer = timer;
            return timer;
        }
    }
    return NULL;
}
 
 
/*
 * Prepare to do drawing in a window or pixmap using the specified
 * graphics context.  Returns the drawable pointer if successful,
 * and the type of drawing id that was supplied.  Returns the special value
 * GR_DRAW_TYPE_NONE if an error is generated, or if drawing is useless.
 */
GR_DRAW_TYPE GsPrepareDrawing(GR_DRAW_ID id, GR_GC_ID gcid, GR_DRAWABLE **retdp)
{
        GR_WINDOW       *wp;            /* found window */
        GR_PIXMAP       *pp;            /* found pixmap */
        GR_GC           *gcp;           /* found graphics context */
        GR_FONT         *fontp;
        GR_REGION       *regionp;       /* user clipping region */
        MWCLIPREGION    *reg;
        PMWFONT         pf;
 
        *retdp = NULL;
 
        gcp = GsFindGC(gcid);
        if (gcp == NULL)
                return GR_DRAW_TYPE_NONE;
 
        /*
         * If the graphics context is not the current one, then
         * make it the current one and remember to update it.
         */
        if (gcp != curgcp) {
                curgcp = gcp;
                gcp->changed = GR_TRUE;
        }
 
        /*
         * Look for window or pixmap id
         */
        pp = NULL;
        wp = GsFindWindow(id);
        if (wp == NULL) {
                pp = GsFindPixmap(id);
                if (pp == NULL)
                          return GR_DRAW_TYPE_NONE;
 
#if DYNAMICREGIONS
                reg = GdAllocRectRegion(0, 0, pp->psd->xvirtres,
                        pp->psd->yvirtres);
                /* intersect with user region if any*/
                if (gcp->regionid) {
                        regionp = GsFindRegion(gcp->regionid);
                        if (regionp)
                                GdIntersectRegion(reg, reg, regionp->rgn);
                }
                GdSetClipRegion(pp->psd, reg);
#else
                {
                MWCLIPRECT      cliprect;
                /* FIXME: setup pixmap clipping, different from windows*/
                cliprect.x = 0;
                cliprect.y = 0;
                cliprect.width = pp->psd->xvirtres;
                cliprect.height = pp->psd->yvirtres;
                GdSetClipRects(pp->psd, 1, &cliprect);
                }
#endif
                /* reset clip cache for next window draw*/
                clipwp = NULL;
        } else {
 
                if (!wp->output) {
                          GsError(GR_ERROR_INPUT_ONLY_WINDOW, id);
                          return GR_DRAW_TYPE_NONE;
                }
 
                if (wp->unmapcount)
                          return GR_DRAW_TYPE_NONE;
 
                /*
                 * If the window is not the currently clipped one,
                 * then make it the current one and define its clip rectangles.
                 */
                if (wp != clipwp || gcp->changed) {
                        /* find user region for intersect*/
                        if (gcp->regionid)
                                regionp = GsFindRegion(gcp->regionid);
                        else regionp = NULL;
 
                        /*
                         * Special handling if user region is not at offset 0,0
                         */
                        if (regionp && (gcp->xoff || gcp->yoff)) {
                                MWCLIPREGION *local = GdAllocRegion();
 
                                GdCopyRegion(local, regionp->rgn);
                                GdOffsetRegion(local, gcp->xoff, gcp->yoff);
 
                                GsSetClipWindow(wp, local,
                                        gcp->mode & ~GR_MODE_DRAWMASK);
 
                                GdDestroyRegion(local);
                          } else {
                                GsSetClipWindow(wp, regionp? regionp->rgn: NULL,
                                        gcp->mode & ~GR_MODE_DRAWMASK);
                          }
                }
        }
 
        /*
         * If the graphics context has been changed, then tell the
         * device driver about it.
         */
        if (gcp->changed) {
                GdSetForeground(GdFindColor(gcp->foreground));
                GdSetBackground(GdFindColor(gcp->background));
                GdSetMode(gcp->mode & GR_MODE_DRAWMASK);
                GdSetUseBackground(gcp->usebackground);
                fontp = GsFindFont(gcp->fontid);
                pf = fontp? fontp->pfont: stdfont;
                GdSetFont(pf);
                gcp->changed = GR_FALSE;
        }
 
        *retdp = wp? (GR_DRAWABLE *)wp: (GR_DRAWABLE *)pp;
        return wp? GR_DRAW_TYPE_WINDOW: GR_DRAW_TYPE_PIXMAP;
}
 
/*
 * Prepare the specified window for drawing into it.
 * This sets up the clipping regions to just allow drawing into it.
 * Returns NULL if the drawing is illegal (with an error generated),
 * or if the window is not mapped.
 */
GR_WINDOW *GsPrepareWindow(GR_WINDOW_ID wid)
{
        GR_WINDOW       *wp;            /* found window */
 
        wp = GsFindWindow(wid);
        if (wp == NULL)
                return NULL;
 
        if (!wp->output) {
                GsError(GR_ERROR_INPUT_ONLY_WINDOW, wid);
                return NULL;
        }
 
        if (wp->unmapcount)
                return NULL;
 
        if (wp != clipwp) {
                /* FIXME: no user region clipping here*/
                GsSetClipWindow(wp, NULL, 0);
        }
 
        return wp;
}
 
/*
 * Find the window which is currently visible for the specified coordinates.
 * This just walks down the window tree looking for the deepest mapped
 * window which contains the specified point.  If the coordinates are
 * off the screen, the root window is returned.
 */
GR_WINDOW *GsFindVisibleWindow(GR_COORD x, GR_COORD y)
{
        GR_WINDOW       *wp;            /* current window */
        GR_WINDOW       *retwp;         /* returned window */
 
        wp = rootwp;
        retwp = wp;
        while (wp) {
                if ((wp->unmapcount == 0) && (wp->x <= x) && (wp->y <= y) &&
                        (wp->x + wp->width > x) && (wp->y + wp->height > y))
                {
                        retwp = wp;
                        wp = wp->children;
                        continue;
                }
                wp = wp->siblings;
        }
        return retwp;
}
 
/*
 * Check to see if the cursor shape is the correct shape for its current
 * location.  If not, its shape is changed.
 */
void GsCheckCursor(void)
{
        GR_WINDOW       *wp;            /* window cursor is in */
        GR_CURSOR       *cp;            /* cursor definition */
 
        /*
         * Get the cursor at its current position, and if it is not the
         * currently defined one, then set the new cursor.  However,
         * if the pointer is currently grabbed, then leave it alone.
         */
        wp = grabbuttonwp;
        if (wp == NULL)
                wp = mousewp;
 
        cp = GsFindCursor(wp->cursorid);
        if (!cp)
                cp = stdcursor;
        if (cp == curcursor)
                return;
 
        /*
         * It needs redefining, so do it.
         */
        curcursor = cp;
        GdMoveCursor(cursorx - cp->cursor.hotx, cursory - cp->cursor.hoty);
        GdSetCursor(&cp->cursor);
}
 
/*
 * Check to see if the window the mouse is currently in has changed.
 * If so, generate enter and leave events as required.  The newest
 * mouse window is remembered in mousewp.  However, do not change the
 * window while it is grabbed.
 */
void GsCheckMouseWindow(void)
{
        GR_WINDOW       *wp;            /* newest window for mouse */
 
        wp = grabbuttonwp;
        if (wp == NULL)
                wp = GsFindVisibleWindow(cursorx, cursory);
        if (wp == mousewp)
                return;
 
        GsDeliverGeneralEvent(mousewp, GR_EVENT_TYPE_MOUSE_EXIT, NULL);
 
        mousewp = wp;
 
        GsDeliverGeneralEvent(wp, GR_EVENT_TYPE_MOUSE_ENTER, NULL);
}
 
/*
 * Determine the current focus window for the current mouse coordinates.
 * The mouse coordinates only matter if the focus is not fixed.  Otherwise,
 * the selected window is dependant on the window which wants keyboard
 * events.  This also sets the current focus for that found window.
 * The window with focus is remembered in focuswp.
 */
void GsCheckFocusWindow(void)
{
        GR_WINDOW               *wp;            /* current window */
        GR_EVENT_CLIENT         *ecp;           /* current event client */
        GR_EVENT_MASK           eventmask;      /* event mask */
 
        if (focusfixed)
                return;
 
        eventmask = GR_EVENT_MASK_KEY_DOWN;
 
        /*
         * Walk upwards from the current window containing the mouse
         * looking for the first window which would accept a keyboard event.
         */
        for (wp = mousewp; ;wp = wp->parent) {
                if (wp->props & GR_WM_PROPS_NOFOCUS)
                        continue;
                for (ecp = wp->eventclients; ecp; ecp = ecp->next) {
                        if (ecp->eventmask & eventmask) {
                                GsWpSetFocus(wp);
                                return;
                        }
                }
                if ((wp == rootwp) || (wp->nopropmask & eventmask)) {
                        GsWpSetFocus(rootwp);
                        return;
                }
        }
}
 
/* Send an update activate event to top level window of passed window*/
static void
GsWpNotifyActivate(GR_WINDOW *wp)
{
        GR_WINDOW       *pwp;
 
        for (pwp=wp; pwp->parent; pwp=pwp->parent)
                if (pwp->parent->id == GR_ROOT_WINDOW_ID)
                        break;
        if (pwp->id != GR_ROOT_WINDOW_ID)
                GsDeliverUpdateEvent(pwp, GR_UPDATE_ACTIVATE, 0, 0, 0, 0);
}
 
/*
 * Set the input focus to the specified window.
 * This generates focus out and focus in events as necessary.
 */
void GsWpSetFocus(GR_WINDOW *wp)
{
        GR_WINDOW       *oldfocus;
 
        if (wp == focuswp)
                return;
 
        GsDeliverGeneralEvent(focuswp, GR_EVENT_TYPE_FOCUS_OUT, wp);
        GsWpNotifyActivate(focuswp);
 
        oldfocus = focuswp;
        focuswp = wp;
 
        GsDeliverGeneralEvent(wp, GR_EVENT_TYPE_FOCUS_IN, oldfocus);
        GsWpNotifyActivate(focuswp);
}
 
/*
 * Set dynamic portrait mode and redraw screen.
 */
void
GsSetPortraitMode(int mode)
{
        GdSetPortraitMode(&scrdev, mode);
        GdRestrictMouse(0, 0, scrdev.xvirtres - 1, scrdev.yvirtres - 1);
 
        /* reset clip and root window size*/
        clipwp = NULL;
        rootwp->width = scrdev.xvirtres;
        rootwp->height = scrdev.yvirtres;
 
        /* deliver portrait changed event to all windows selecting it*/
        GsDeliverPortraitChangedEvent();
 
        /* redraw screen - apps may redraw/resize again causing flicker*/
        GsRedrawScreen();
}
 
/*
 * Check mouse coordinates and possibly set indicated portrait
 * mode from mouse position.
 */
void
GsSetPortraitModeFromXY(GR_COORD rootx, GR_COORD rooty)
{
        int newmode;
 
        if (rootx == 0) {
                /* rotate left*/
                switch (scrdev.portrait) {
                case MWPORTRAIT_NONE:
                default:
                        newmode = MWPORTRAIT_LEFT;
                        break;
                case MWPORTRAIT_LEFT:
                        newmode = MWPORTRAIT_DOWN;
                        break;
                case MWPORTRAIT_DOWN:
                        newmode = MWPORTRAIT_RIGHT;
                        break;
                case MWPORTRAIT_RIGHT:
                        newmode = MWPORTRAIT_NONE;
                        break;
                }
                GsSetPortraitMode(newmode);
                GrMoveCursor(5, rooty);
                GdMoveMouse(5, rooty);
        } else if (rootx == scrdev.xvirtres-1) {
                /* rotate right*/
                switch (scrdev.portrait) {
                case MWPORTRAIT_NONE:
                default:
                        newmode = MWPORTRAIT_RIGHT;
                        break;
                case MWPORTRAIT_LEFT:
                        newmode = MWPORTRAIT_NONE;
                        break;
                case MWPORTRAIT_DOWN:
                        newmode = MWPORTRAIT_LEFT;
                        break;
                case MWPORTRAIT_RIGHT:
                        newmode = MWPORTRAIT_DOWN;
                        break;
                }
                GsSetPortraitMode(newmode);
                GrMoveCursor(scrdev.xvirtres-5, rooty);
                GdMoveMouse(scrdev.xvirtres-5, rooty);
        }
}
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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [services/] [gfx/] [mw/] [v2_0/] [src/] [nanox/] [srvutil.c] - Blame information for rev 174

Line No.	Rev	Author	Line
1	27	unneback	`/*`
2			`* Copyright (c) 2000 Greg Haerr <greg@censoft.com>`
3			`* Copyright (c) 1991 David I. Bell`
4			`* Permission is granted to use, distribute, or modify this source,`
5			`* provided that this copyright notice remains intact.`
6			`*`
7			`* Graphics server utility routines for windows.`
8			`*/`
9			`#include <stdio.h>`
10			`#include <stdlib.h>`
11
12			`#ifndef __PACIFIC__`
13			`#include <fcntl.h>`
14			`#endif`
15
16			`#include "serv.h"`
17
18			`/*`
19			`* Help prevent future bugs by defining this variable to an illegal value.`
20			`* These routines should not be referencing this, but should be using`
21			`* unmapcount instead.`
22			`*/`
23			`#define mapped cannotusemapped`
24
25			`/*`
26			`* Redraw the screen completely.`
27			`*/`
28			`void`
29			`GsRedrawScreen(void)`
30			`{`
31			`/* Redraw all windows*/`
32			`GsExposeArea(rootwp, 0, 0, rootwp->width, rootwp->height, NULL);`
33			`}`
34
35			`/*`
36			`* Activate Screen Saver.`
37			`*/`
38			`void`
39			`GsActivateScreenSaver(void *arg)`
40			`{`