mod_statusbar/draw.c

   1 /*
   2  * ion/mod_statusbar/draw.c
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #include <string.h>
  10
  11 #include <ioncore/common.h>
  12 #include <ioncore/mplex.h>
  13 #include "statusbar.h"
  14 #include "draw.h"
  15
  16
  17 static void calc_elems_x(WRectangle *g, WSBElem *elems, int nelems)
  18 {
  19     int x=g->x;
  20
  21     while(nelems>0){
  22         elems->x=x;
  23         if(elems->type==WSBELEM_STRETCH)
  24             x+=elems->text_w+elems->stretch;
  25         else
  26             x+=elems->text_w;
  27
  28         nelems--;
  29         elems++;
  30     }
  31 }
  32
  33
  34 static void calc_elems_x_ra(WRectangle *g, WSBElem *elems, int nelems)
  35 {
  36     int x=g->x+g->w;
  37
  38     elems+=nelems-1;
  39
  40     while(nelems>0){
  41         if(elems->type==WSBELEM_STRETCH)
  42             x-=elems->text_w+elems->stretch;
  43         else
  44             x-=elems->text_w;
  45         elems->x=x;
  46
  47         elems--;
  48         nelems--;
  49     }
  50 }
  51
  52
  53 void statusbar_calculate_xs(WStatusBar *sb)
  54 {
  55     WRectangle g;
  56     GrBorderWidths bdw;
  57     WMPlex *mgr=NULL;
  58     bool right_align=FALSE;
  59     int nleft=0, nright=0;
  60
  61     if(sb->brush==NULL || sb->elems==NULL)
  62         return;
  63
  64     grbrush_get_border_widths(sb->brush, &bdw);
  65
  66     g.x=0;
  67     g.y=0;
  68     g.w=REGION_GEOM(sb).w;
  69     g.h=REGION_GEOM(sb).h;
  70
  71     mgr=OBJ_CAST(REGION_PARENT(sb), WMPlex);
  72     if(mgr!=NULL){
  73         WRegion *std=NULL;
  74         WMPlexSTDispInfo din;
  75         din.pos=MPLEX_STDISP_TL;
  76         mplex_get_stdisp(mgr, &std, &din);
  77         if(std==(WRegion*)sb)
  78             right_align=(din.pos==MPLEX_STDISP_TR || din.pos==MPLEX_STDISP_BR);
  79     }
  80
  81     g.x+=bdw.left;
  82     g.w-=bdw.left+bdw.right;
  83     g.y+=bdw.top;
  84     g.h-=bdw.top+bdw.bottom;
  85
  86     if(sb->filleridx>=0){
  87         nleft=sb->filleridx;
  88         nright=sb->nelems-(sb->filleridx+1);
  89     }else if(!right_align){
  90         nleft=sb->nelems;
  91         nright=0;
  92     }else{
  93         nleft=0;
  94         nright=sb->nelems;
  95     }
  96
  97     if(nleft>0)
  98         calc_elems_x(&g, sb->elems, nleft);
  99
 100     if(nright>0)
 101         calc_elems_x_ra(&g, sb->elems+sb->nelems-nright, nright);
 102 }
 103
 104
 105
 106 static void draw_elems(GrBrush *brush, WRectangle *g, int ty,
 107                        WSBElem *elems, int nelems, bool needfill)
 108 {
 109     int prevx=g->x;
 110     int maxx=g->x+g->w;
 111
 112     while(nelems>0){
 113         if(prevx<elems->x){
 114             g->x=prevx;
 115             g->w=elems->x-prevx;
 116             grbrush_clear_area(brush, g);
 117         }
 118
 119         if(elems->type==WSBELEM_TEXT || elems->type==WSBELEM_METER){
 120             const char *s=(elems->text!=NULL
 121                            ? elems->text
 122                            : STATUSBAR_NX_STR);
 123
 124             grbrush_set_attr(brush, elems->attr);
 125             grbrush_set_attr(brush, elems->meter);
 126
 127             grbrush_draw_string(brush, elems->x, ty, s, strlen(s), needfill);
 128
 129             grbrush_unset_attr(brush, elems->meter);
 130             grbrush_unset_attr(brush, elems->attr);
 131
 132             prevx=elems->x+elems->text_w;
 133         }
 134         elems++;
 135         nelems--;
 136     }
 137
 138     if(prevx<maxx){
 139         g->x=prevx;
 140         g->w=maxx-prevx;
 141         grbrush_clear_area(brush, g);
 142     }
 143 }
 144
 145
 146 void statusbar_draw(WStatusBar *sb, bool complete)
 147 {
 148     WRectangle g;
 149     GrBorderWidths bdw;
 150     GrFontExtents fnte;
 151     int ty;
 152
 153     if(sb->brush==NULL)
 154         return;
 155
 156     grbrush_get_border_widths(sb->brush, &bdw);
 157     grbrush_get_font_extents(sb->brush, &fnte);
 158
 159     g.x=0;
 160     g.y=0;
 161     g.w=REGION_GEOM(sb).w;
 162     g.h=REGION_GEOM(sb).h;
 163
 164     grbrush_begin(sb->brush, &g, (complete ? 0 : GRBRUSH_NO_CLEAR_OK));
 165
 166     grbrush_draw_border(sb->brush, &g);
 167
 168     if(sb->elems==NULL)
 169         return;
 170
 171     g.x+=bdw.left;
 172     g.w-=bdw.left+bdw.right;
 173     g.y+=bdw.top;
 174     g.h-=bdw.top+bdw.bottom;
 175
 176     ty=(g.y+fnte.baseline+(g.h-fnte.max_height)/2);
 177
 178     draw_elems(sb->brush, &g, ty, sb->elems, sb->nelems, TRUE);
 179
 180     grbrush_end(sb->brush);
 181 }
 182
 183