ioncore/gr.h

   1 /*
   2  * ion/ioncore/gr.h
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2009.
   5  *
   6  * See the included file LICENSE for details.
   7  */
   8
   9 #ifndef ION_IONCORE_GR_H
  10 #define ION_IONCORE_GR_H
  11
  12 #include <libtu/stringstore.h>
  13
  14 #include "common.h"
  15 #include "rectangle.h"
  16
  17
  18 INTRCLASS(GrBrush);
  19 DECLCLASS(GrBrush){
  20     Obj obj;
  21 };
  22
  23
  24 #include "rootwin.h"
  25
  26 /* Types */
  27
  28 #define GR_FONT_EXTENTS_INIT {0, 0, 0}
  29
  30 typedef struct{
  31     uint max_height;
  32     uint max_width;
  33     uint baseline;
  34 } GrFontExtents;
  35
  36 #define GR_BORDER_WIDTHS_INIT {0, 0, 0, 0, 0, 0, 0}
  37
  38 typedef struct{
  39     uint top, bottom, left, right;
  40     uint tb_ileft, tb_iright;
  41     uint spacing;
  42 } GrBorderWidths;
  43
  44 typedef StringId GrAttr;
  45
  46 #define GRATTR_NONE STRINGID_NONE
  47
  48 #define GR_STYLESPEC_INIT {0, NULL}
  49
  50 typedef struct{
  51     GrAttr attr;
  52     uint score;
  53 } GrAttrScore;
  54
  55 typedef struct{
  56     uint n;
  57     GrAttrScore *attrs;
  58 } GrStyleSpec;
  59
  60 #define GR_TEXTELEM_INIT {NULL, 0, GR_STYLESPEC_INIT}
  61
  62 typedef struct{
  63     char *text;
  64     int iw;
  65     GrStyleSpec attr;
  66 } GrTextElem;
  67
  68 typedef enum{
  69     GR_TRANSPARENCY_NO,
  70     GR_TRANSPARENCY_YES,
  71     GR_TRANSPARENCY_DEFAULT
  72 } GrTransparency;
  73
  74 typedef enum{
  75     GR_BORDERLINE_NONE,
  76     GR_BORDERLINE_LEFT,
  77     GR_BORDERLINE_RIGHT,
  78     GR_BORDERLINE_TOP,
  79     GR_BORDERLINE_BOTTOM
  80 } GrBorderLine;
  81
  82 /* Flags to grbrush_begin */
  83 #define GRBRUSH_AMEND       0x0001
  84 #define GRBRUSH_NEED_CLIP   0x0004
  85 #define GRBRUSH_NO_CLEAR_OK 0x0008 /* implied by GRBRUSH_AMEND */
  86 #define GRBRUSH_KEEP_ATTR   0x0010
  87
  88 /* Engines etc. */
  89
  90 typedef GrBrush *GrGetBrushFn(Window win, WRootWin *rootwin,
  91                               const char *style);
  92
  93 extern bool gr_register_engine(const char *engine,  GrGetBrushFn *fn);
  94 extern void gr_unregister_engine(const char *engine);
  95 extern bool gr_select_engine(const char *engine);
  96 extern void gr_refresh();
  97 extern void gr_read_config();
  98
  99  /* Every star ('*') element of 'spec' increases score by one.
 100   * Every other element of 'spec' found in 'attr' increases the score by the
 101   * number set in attr times two. Any element of 'spec' (other than star),
 102   *  not found in 'attr', forces score to zero.
 103   */
 104 extern uint gr_stylespec_score(const GrStyleSpec *spec, const GrStyleSpec *attr);
 105 extern uint gr_stylespec_score2(const GrStyleSpec *spec, const GrStyleSpec *attr,
 106                                 const GrStyleSpec *attr2);
 107
 108 extern void gr_stylespec_init(GrStyleSpec *spec);
 109 extern bool gr_stylespec_set(GrStyleSpec *spec, GrAttr a);
 110 extern bool gr_stylespec_isset(const GrStyleSpec *spec, GrAttr a);
 111 extern void gr_stylespec_unset(GrStyleSpec *spec, GrAttr a);
 112 extern bool gr_stylespec_add(GrStyleSpec *spec, GrAttr a, uint score);
 113 extern bool gr_stylespec_append(GrStyleSpec *dst, const GrStyleSpec *src);
 114 extern void gr_stylespec_unalloc(GrStyleSpec *spec);
 115 extern bool gr_stylespec_equals(const GrStyleSpec *s1, const GrStyleSpec *s2);
 116 extern bool gr_stylespec_load(GrStyleSpec *spec, const char *str);
 117 extern bool gr_stylespec_load_(GrStyleSpec *spec, const char *str,
 118                                bool no_order_score);
 119
 120 /* GrBrush */
 121
 122 extern GrBrush *gr_get_brush(Window win, WRootWin *rootwin,
 123                              const char *style);
 124
 125 DYNFUN GrBrush *grbrush_get_slave(GrBrush *brush, WRootWin *rootwin,
 126                                   const char *style);
 127
 128 extern void grbrush_release(GrBrush *brush);
 129
 130 extern bool grbrush_init(GrBrush *brush);
 131 extern void grbrush_deinit(GrBrush *brush);
 132
 133 DYNFUN void grbrush_begin(GrBrush *brush, const WRectangle *geom,
 134                           int flags);
 135 DYNFUN void grbrush_end(GrBrush *brush);
 136
 137 /* Attributes */
 138
 139 DYNFUN void grbrush_init_attr(GrBrush *brush, const GrStyleSpec *spec);
 140 DYNFUN void grbrush_set_attr(GrBrush *brush, GrAttr attr);
 141 DYNFUN void grbrush_unset_attr(GrBrush *brush, GrAttr attr);
 142
 143 /* Border drawing */
 144
 145 DYNFUN void grbrush_get_border_widths(GrBrush *brush, GrBorderWidths *bdi);
 146
 147 DYNFUN void grbrush_draw_border(GrBrush *brush, const WRectangle *geom);
 148 DYNFUN void grbrush_draw_borderline(GrBrush *brush, const WRectangle *geom,
 149                                     GrBorderLine line);
 150
 151 /* String drawing */
 152
 153 DYNFUN void grbrush_get_font_extents(GrBrush *brush, GrFontExtents *fnti);
 154
 155 DYNFUN uint grbrush_get_text_width(GrBrush *brush, const char *text, uint len);
 156
 157 DYNFUN void grbrush_draw_string(GrBrush *brush, int x, int y,
 158                                 const char *str, int len, bool needfill);
 159
 160 /* Textbox drawing */
 161
 162 DYNFUN void grbrush_draw_textbox(GrBrush *brush, const WRectangle *geom,
 163                                  const char *text, bool needfill);
 164
 165 DYNFUN void grbrush_draw_textboxes(GrBrush *brush, const WRectangle *geom,
 166                                    int n, const GrTextElem *elem,
 167                                    bool needfill);
 168
 169 /* Misc */
 170
 171 /* Behaviour of the following two functions for "slave brushes" is undefined.
 172  * If the parameter rough to grbrush_set_window_shape is set, the actual
 173  * shape may be changed for corner smoothing and other superfluous effects.
 174  * (This feature is only used by floatframes.)
 175  */
 176 DYNFUN void grbrush_set_window_shape(GrBrush *brush, bool rough,
 177                                      int n, const WRectangle *rects);
 178
 179 DYNFUN void grbrush_enable_transparency(GrBrush *brush, GrTransparency mode);
 180
 181 DYNFUN void grbrush_fill_area(GrBrush *brush, const WRectangle *geom);
 182 DYNFUN void grbrush_clear_area(GrBrush *brush, const WRectangle *geom);
 183
 184 DYNFUN bool grbrush_get_extra(GrBrush *brush, const char *key,
 185                               char type, void *data);
 186
 187 #endif /* ION_IONCORE_GR_H */