Return to upfront.c CVS log

Up to [Research Unix] / researchv9 / jerq / src / lib / layer

Annotation of researchv9/jerq/src/lib/layer/upfront.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Move a layer to the front of the screen
        !             3:  */
        !             4: #include <jerq.h>
        !             5: #include "layer.h"
        !             6: 
        !             7: Layer *lfront, *lback;
        !             8: 
        !             9: static void
        !            10: Lupfront(l, r, b, f, o)
        !            11: Layer *l, *o;
        !            12: Rectangle r;
        !            13: Bitmap *b;
        !            14: char *f;
        !            15: {
        !            16:        if (o != l) {
        !            17:                o->someobs = 1;
        !            18:                bitblt(o, r, o->obs, r.origin, F_STORE);
        !            19:                bitblt(l->obs, r, l, r.origin, F_STORE);
        !            20:        }
        !            21: }
        !            22: 
        !            23: upfront(lp)
        !            24:        register Layer *lp;
        !            25: {
        !            26:        if (!lp)
        !            27:                return;
        !            28:        if (!lp->front) {
        !            29:                lp->someobs = lp->nonevis = 0;
        !            30:                return;
        !            31:        }
        !            32:        cursinhibit();
        !            33:        /*
        !            34:         * Move bits of lp to front
        !            35:         */
        !            36:        lp->nonevis = 0;        /* can't shortcut to whole obscured */
        !            37:        if (lp->someobs)
        !            38:                layerop(lp, Lupfront, lp->rect);
        !            39:        /*
        !            40:         * Put lp at front
        !            41:         */
        !            42:        if(lfront!=lp){
        !            43:                if(lback==lp)
        !            44:                        lback=lp->front;
        !            45:                if(lp->back)
        !            46:                        lp->back->front=lp->front;
        !            47:                lp->front->back=lp->back;
        !            48:                lfront->front=lp;
        !            49:                lp->back=lfront;
        !            50:                lp->front=0;
        !            51:                lfront=lp;
        !            52:        }
        !            53:        /*
        !            54:         * lp is now at the front, so update nonevis for all layers.
        !            55:         * if lp was fully visible before, we can't have changed it, so
        !            56:         * don't bother.
        !            57:         */
        !            58:        if (lp->someobs)
        !            59:                setvis();
        !            60:        lp->someobs = 0;
        !            61:        cursallow();
        !            62: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.