mod_statusbar/draw.c

   1 /*
   2  * ion/mod_statusbar/draw.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2006.
   5  *
   6  * Ion is free software; you can redistribute it and/or modify it under
   7  * the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <string.h>
  13
  14 #include <ioncore/common.h>
  15 #include <ioncore/mplex.h>
  16 #include "statusbar.h"
  17 #include "draw.h"
  18
  19
  20 static void calc_elems_x(WRectangle *g, WSBElem *elems, int nelems)
  21 {
  22     int x=g->x;
  23
  24     while(nelems>0){
  25         elems->x=x;
  26         if(elems->type==WSBELEM_STRETCH)
  27             x+=elems->text_w+elems->stretch;
  28         else
  29             x+=elems->text_w;
  30
  31         nelems--;
  32         elems++;
  33     }
  34 }
  35
  36
  37 static void calc_elems_x_ra(WRectangle *g, WSBElem *elems, int nelems)
  38 {
  39     int x=g->x+g->w;
  40
  41     elems+=nelems-1;
  42
  43     while(nelems>0){
  44         if(elems->type==WSBELEM_STRETCH)
  45             x-=elems->text_w+elems->stretch;
  46         else
  47             x-=elems->text_w;
  48         elems->x=x;
  49
  50         elems--;
  51         nelems--;
  52     }
  53 }
  54
  55
  56 void statusbar_calculate_xs(WStatusBar *sb)
  57 {
  58     WRectangle g;
  59     GrBorderWidths bdw;
  60     WMPlex *mgr=NULL;
  61     bool right_align=FALSE;
  62     int minx, maxx;
  63     int nleft=0, nright=0;
  64
  65     if(sb->brush==NULL || sb->elems==NULL)
  66         return;
  67
  68     grbrush_get_border_widths(sb->brush, &bdw);
  69
  70     g.x=0;
  71     g.y=0;
  72     g.w=REGION_GEOM(sb).w;
  73     g.h=REGION_GEOM(sb).h;
  74
  75     mgr=OBJ_CAST(REGION_PARENT(sb), WMPlex);
  76     if(mgr!=NULL){
  77         WRegion *std=NULL;
  78         WMPlexSTDispInfo din;
  79         din.pos=MPLEX_STDISP_TL;
  80         mplex_get_stdisp(mgr, &std, &din);
  81         if(std==(WRegion*)sb)
  82             right_align=(din.pos==MPLEX_STDISP_TR || din.pos==MPLEX_STDISP_BR);
  83     }
  84
  85     g.x+=bdw.left;
  86     g.w-=bdw.left+bdw.right;
  87     g.y+=bdw.top;
  88     g.h-=bdw.top+bdw.bottom;
  89
  90     if(sb->filleridx>=0){
  91         nleft=sb->filleridx;
  92         nright=sb->nelems-(sb->filleridx+1);
  93     }else if(!right_align){
  94         nleft=sb->nelems;
  95         nright=0;
  96     }else{
  97         nleft=0;
  98         nright=sb->nelems;
  99     }
 100
 101     if(nleft>0)
 102         calc_elems_x(&g, sb->elems, nleft);
 103
 104     if(nright>0)
 105         calc_elems_x_ra(&g, sb->elems+sb->nelems-nright, nright);
 106 }
 107
 108
 109
 110 static void draw_elems(GrBrush *brush, WRectangle *g, int ty,
 111                        WSBElem *elems, int nelems, bool needfill,
 112                        const char *dfltattr, bool complete)
 113 {
 114     int prevx=g->x;
 115     int maxx=g->x+g->w;
 116
 117     while(nelems>0){
 118         if(prevx<elems->x){
 119             g->x=prevx;
 120             g->w=elems->x-prevx;
 121             grbrush_clear_area(brush, g);
 122         }
 123
 124         if(elems->type==WSBELEM_TEXT || elems->type==WSBELEM_METER){
 125             const char *s=(elems->text!=NULL
 126                            ? elems->text
 127                            : STATUSBAR_NX_STR);
 128             grbrush_draw_string(brush, elems->x, ty, s, strlen(s), needfill,
 129                                 elems->attr ? elems->attr : dfltattr);
 130             prevx=elems->x+elems->text_w;
 131         }
 132         elems++;
 133         nelems--;
 134     }
 135
 136     if(prevx<maxx){
 137         g->x=prevx;
 138         g->w=maxx-prevx;
 139         grbrush_clear_area(brush, g);
 140     }
 141 }
 142
 143
 144 void statusbar_draw(WStatusBar *sb, bool complete)
 145 {
 146     WRectangle g;
 147     GrBorderWidths bdw;
 148     GrFontExtents fnte;
 149     Window win=sb->wwin.win;
 150     int ty;
 151
 152     if(sb->brush==NULL)
 153         return;
 154
 155     grbrush_get_border_widths(sb->brush, &bdw);
 156     grbrush_get_font_extents(sb->brush, &fnte);
 157
 158     g.x=0;
 159     g.y=0;
 160     g.w=REGION_GEOM(sb).w;
 161     g.h=REGION_GEOM(sb).h;
 162
 163     grbrush_begin(sb->brush, &g, (complete ? 0 : GRBRUSH_NO_CLEAR_OK));
 164
 165     grbrush_draw_border(sb->brush, &g, NULL);
 166
 167     if(sb->elems==NULL)
 168         return;
 169
 170     g.x+=bdw.left;
 171     g.w-=bdw.left+bdw.right;
 172     g.y+=bdw.top;
 173     g.h-=bdw.top+bdw.bottom;
 174
 175     ty=(g.y+fnte.baseline+(g.h-fnte.max_height)/2);
 176
 177     draw_elems(sb->brush, &g, ty, sb->elems, sb->nelems,
 178                TRUE, NULL, complete);
 179
 180     grbrush_end(sb->brush);
 181 }
 182
 183