draw.h

   1 /* See LICENSE file for copyright and license details. */
   2
   3 /* X11 types - begin */
   4 struct _XDraw {
   5         unsigned int w, h;
   6         Display *dpy;
   7         Drawable drawable;
   8         GC gc;
   9 };
  10 typedef struct _XDraw Draw;
  11
  12 struct _XCol {
  13         unsigned long rgb;
  14 };
  15 typedef struct _XCol Col;
  16
  17 struct _XFont {
  18         int ascent;
  19         int descent;
  20         unsigned int h, w;
  21         XFontSet set;
  22         XFontStruct *xfont;
  23 };
  24 typedef struct _XFont Fnt;
  25 /* X11 types - end */
  26
  27 typedef struct {
  28         Draw *draw;
  29         Col *fg;
  30         Col *bg;
  31         Fnt *font;
  32         Bool fill;
  33 } DDC;
  34
  35 typedef struct {
  36         unsigned int w;
  37         unsigned int h;
  38         int x;
  39         int y;
  40         int xOff;
  41         int yOff;
  42 } TextExtents;
  43
  44 /* Drawable abstraction */
  45 Draw *draw_create(Display *dpy, Window win, unsigned int w, unsigned int h);
  46 void draw_resize(Draw *draw, unsigned int w, unsigned int h);
  47 void draw_free(Draw *draw);
  48
  49 /* Drawing context abstraction */
  50 DDC *dc_create(Draw *draw);
  51 void dc_free(DDC *dc);
  52
  53 /* Fnt abstraction */
  54 Fnt *font_create(const char *fontname);
  55 void font_free(Fnt *font);
  56
  57 /* Colour abstraction */
  58 Col *col_create(const char *colname);
  59 void col_free(Col *col);
  60
  61 /* Drawing context manipulation */
  62 void dc_setfont(DDC *dc, Fnt *font);
  63 void dc_setfg(DDC *dc, Col col);
  64 void dc_setbg(DDC *dc, Col col);
  65 void dc_setfill(DDC *dc, Bool fill);
  66
  67 /* Drawing functions */
  68 void dc_drawrect(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  69 void dc_drawtext(DDC *dc, int x, int y, const char *text);
  70
  71 /* Map functions */
  72 void dc_map(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  73
  74 /* Text functions */
  75 void dc_getextents(DDC *dc, const char *text, TextExtents *extents);
  76