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         int screen;
  11         Window win;
  12         Drawable drawable;
  13         GC gc;
  14         DDC *dc;
  15 };
  16
  17 struct _XCol {
  18         unsigned long rgb;
  19 };
  20 typedef struct _XCol Col;
  21
  22 struct _XFont {
  23         int ascent;
  24         int descent;
  25         unsigned int h, w;
  26         XFontSet set;
  27         XFontStruct *xfont;
  28 };
  29 typedef struct _XFont Fnt;
  30 /* X11 types - end */
  31
  32 struct _DDC {
  33         Draw *draw;
  34         Col *fg;
  35         Col *bg;
  36         Fnt *font;
  37         Bool fill;
  38         DDC *next;
  39 };
  40
  41 typedef struct {
  42         unsigned int w;
  43         unsigned int h;
  44         int x;
  45         int y;
  46         int xOff;
  47         int yOff;
  48 } TextExtents;
  49
  50 /* Drawable abstraction */
  51 Draw *draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
  52 void draw_resize(Draw *draw, unsigned int w, unsigned int h);
  53 void draw_free(Draw *draw);
  54
  55 /* Drawing context abstraction */
  56 DDC *dc_create(Draw *draw);
  57 void dc_free(DDC *dc);
  58
  59 /* Fnt abstraction */
  60 Fnt *font_create(const char *fontname);
  61 void font_free(Fnt *font);
  62
  63 /* Colour abstraction */
  64 Col *col_create(const char *colname);
  65 void col_free(Col *col);
  66
  67 /* Drawing context manipulation */
  68 void dc_setfont(DDC *dc, Fnt *font);
  69 void dc_setfg(DDC *dc, Col *col);
  70 void dc_setbg(DDC *dc, Col *col);
  71 void dc_setfill(DDC *dc, Bool fill);
  72
  73 /* Drawing functions */
  74 void dc_drawrect(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  75 void dc_drawtext(DDC *dc, int x, int y, const char *text);
  76
  77 /* Map functions */
  78 void dc_map(DDC *dc, int x, int y, unsigned int w, unsigned int h);
  79
  80 /* Text functions */
  81 void dc_getextents(DDC *dc, const char *text, TextExtents *extents);
  82