draw.h

   1 /* See LICENSE file for copyright and license details. */
   2
   3 typedef struct _DDC DDC;
   4
   5 /* X11 types - begin */
   6 typedef struct _XDraw Draw;
   7 struct _XDraw {
   8         unsigned int w, h;
   9         Display *dpy;
  10         Drawable drawable;
  11         GC gc;
  12         DDC *dc;
  13 };
  14
  15 struct _XCol {
  16         unsigned long rgb;
  17 };
  18 typedef struct _XCol Col;
  19
  20 struct _XFont {
  21         int ascent;
  22         int descent;
  23         unsigned int h, w;
  24         XFontSet set;
  25         XFontStruct *xfont;
  26 };
  27 typedef struct _XFont Fnt;
  28 /* X11 types - end */
  29
  30 struct _DDC {
  31         Draw *draw;
  32         Col *fg;
  33         Col *bg;
  34         Fnt *font;
  35         Bool fill;
  36         DDC *next;
  37 };
  38
  39 typedef struct {
  40         unsigned int w;
  41         unsigned int h;
  42         int x;
  43         int y;
  44         int xOff;
  45         int yOff;
  46 } TextExtents;
  47
  48 /* Drawable abstraction */
  49 Draw *draw_create(Display *dpy, Window win, unsigned int w, unsigned int h);
  50 void draw_resize(Draw *draw, unsigned int w, unsigned int h);
  51 void draw_free(Draw *draw);
  52
  53 /* Drawing context abstraction */
  54 DDC *dc_create(Draw *draw);
  55 void dc_free(DDC *dc);
  56
  57 /* Fnt abstraction */
  58 Fnt *font_create(const char *fontname);
  59 void font_free(Fnt *font);
  60
  61 /* Colour abstraction */
  62 Col *col_create(const char *colname);
  63 void col_free(Col *col);
  64
  65 /* Drawing context manipulation */
  66 void dc_setfont(DDC *dc, Fnt *font);
  67 void dc_setfg(DDC *dc, Col *col);
  68 void dc_setbg(DDC *dc, Col *col);
  69 void dc_setfill(DDC *dc, Bool fill);
  70
  71 /* Drawing functions */
  72 void dc_drawrect(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  73 void dc_drawtext(DDC *dc, int x, int y, const char *text);
  74
  75 /* Map functions */
  76 void dc_map(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  77
  78 /* Text functions */
  79 void dc_getextents(DDC *dc, const char *text, TextExtents *extents);
  80