draw.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdlib.h>
   3 #include <X11/Xlib.h>
   4
   5 #include "draw.h"
   6
   7 Draw *
   8 draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) {
   9         Draw *draw = (Draw *)calloc(1, sizeof(Draw));
  10         draw->dpy = dpy;
  11         draw->screen = screen;
  12         draw->win = win;
  13         draw->w = w;
  14         draw->h = h;
  15         draw->drawable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen));
  16         draw->gc = XCreateGC(dpy, win, 0, NULL);
  17         XSetLineAttributes(dpy, draw->gc, 1, LineSolid, CapButt, JoinMiter);
  18         return draw;
  19 }
  20
  21 void
  22 draw_resize(Draw *draw, unsigned int w, unsigned int h) {
  23         if(!draw)
  24                 return;
  25         draw->w = w;
  26         draw->h = h;
  27         XFreePixmap(draw->dpy, draw->drawable);
  28         draw->drawable = XCreatePixmap(draw->dpy, draw->win, w, h, DefaultDepth(draw->dpy, draw->screen));
  29 }
  30
  31 void
  32 draw_free(Draw *draw) {
  33         XFreePixmap(draw->dpy, draw->drawable);
  34         XFreeGC(draw->dpy, draw->gc);
  35         free(draw);
  36 }
  37
  38 DDC *
  39 dc_create(Draw *draw) {
  40         DDC *dc = (DDC *)calloc(1, sizeof(DDC));
  41         dc->draw = draw;
  42         dc->next = draw->dc;
  43         draw->dc = dc;
  44         return dc;
  45 }
  46
  47 void
  48 dc_free(DDC *dc) {
  49         DDC **tdc;
  50
  51         if(!dc)
  52                 return;
  53         /* remove from dc list */
  54         for(tdc = &dc->draw->dc; *tdc && *tdc != dc; tdc = &(*tdc)->next);
  55         *tdc = dc->next;
  56         /* TODO: deallocate any resources of this dc, if needed */
  57         free(dc);
  58 }
  59
  60 Fnt *
  61 font_create(const char *fontname) {
  62         Fnt *font = (Fnt *)calloc(1, sizeof(Fnt));
  63         /* TODO: allocate actual font */
  64         return font;
  65 }
  66
  67 void
  68 font_free(Fnt *font) {
  69         if(!font)
  70                 return;
  71         /* TODO: deallocate any font resources */
  72         free(font);
  73 }
  74
  75 Col *
  76 col_create(const char *colname) {
  77         Col *col = (Col *)calloc(1, sizeof(Col));
  78         /* TODO: allocate color */
  79         return col;
  80 }
  81
  82 void
  83 col_free(Col *col) {
  84         if(!col)
  85                 return;
  86         /* TODO: deallocate any color resource */
  87         free(col);
  88 }
  89
  90 void
  91 dc_setfont(DDC *dc, Fnt *font) {
  92         if(!dc || !font)
  93                 return;
  94         dc->font = font;
  95 }
  96
  97 void
  98 dc_setfg(DDC *dc, Col *col) {
  99         if(!dc || !col)
 100                 return;
 101         dc->fg = col;
 102 }
 103
 104 void
 105 dc_setbg(DDC *dc, Col *col) {
 106         if(!dc || !col)
 107                 return;
 108         dc->bg = col;
 109 }
 110
 111 void
 112 dc_setfill(DDC *dc, Bool fill) {
 113         if(!dc)
 114                 return;
 115         dc->fill = fill;
 116 }
 117
 118 void
 119 dc_drawrect(DDC *dc, int x, int y, unsigned int w, unsigned int h) {
 120         if(!dc)
 121                 return;
 122         /* TODO: draw the rectangle */
 123 }
 124
 125 void
 126 dc_drawtext(DDC *dc, int x, int y, const char *text) {
 127         if(!dc)
 128                 return;
 129         /* TODO: draw the text */
 130 }
 131
 132 void
 133 dc_map(DDC *dc, int x, int y, unsigned int w, unsigned int h) {
 134         if(!dc)
 135                 return;
 136         /* TODO: map the dc contents in the region */
 137 }
 138
 139 void
 140 dc_getextents(DDC *dc, const char *text, TextExtents *extents) {
 141         if(!dc || !extents)
 142                 return;
 143         /* TODO: get extents */
 144 }