common/draw.h

   1 /*
   2  * draw.h - draw functions header
   3  *
   4  * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #ifndef AWESOME_COMMON_DRAW_H
  23 #define AWESOME_COMMON_DRAW_H
  24
  25 #include <cairo.h>
  26
  27 #include <confuse.h>
  28
  29 #include <X11/Xlib.h>
  30 #include <pango/pangocairo.h>
  31
  32 #include "common/util.h"
  33 #include "common/list.h"
  34
  35 typedef enum
  36 {
  37     AlignLeft,
  38     AlignRight,
  39     AlignCenter,
  40     AlignFlex,
  41     AlignAuto
  42 } Alignment;
  43
  44 typedef struct area_t area_t;
  45 struct area_t
  46 {
  47     /** Co-ords of upper left corner */
  48     int x;
  49     int y;
  50     int width;
  51     int height;
  52     area_t *prev, *next;
  53 };
  54
  55 DO_SLIST(area_t, area, p_delete)
  56
  57 #define AREA_LEFT(a)    ((a).x)
  58 #define AREA_TOP(a)     ((a).y)
  59 #define AREA_RIGHT(a)   ((a).x + (a).width)
  60 #define AREA_BOTTOM(a)    ((a).y + (a).height)
  61
  62 static inline Bool
  63 area_intersect_area(area_t a, area_t b)
  64 {
  65     return (b.x < a.x + a.width
  66             && b.x + b.width > a.x
  67             && b.y < a.y + a.height
  68             && b.y + b.height > a.y);
  69 }
  70
  71 static inline area_t
  72 area_get_intersect_area(area_t a, area_t b)
  73 {
  74     area_t g;
  75
  76     g.x = MAX(a.x, b.x);
  77     g.y = MAX(a.y, b.y);
  78     g.width = MIN(a.x + a.width, b.x + b.width) - g.x;
  79     g.height = MIN(a.y + a.height, b.y + b.height) - g.y;
  80
  81     return g;
  82 }
  83
  84 typedef struct
  85 {
  86     PangoFontDescription *desc;
  87     int height;
  88 } font_t;
  89
  90 typedef struct
  91 {
  92     /** Foreground color */
  93     XColor fg;
  94     /** Background color */
  95     XColor bg;
  96     /** Shadow color */
  97     XColor shadow;
  98     /** Border color */
  99     XColor border;
 100     /** Shadow offset */
 101     int shadow_offset;
 102     /** Font */
 103     font_t *font;
 104 } style_t;
 105
 106 typedef struct
 107 {
 108     Display *display;
 109     Drawable drawable;
 110     Visual *visual;
 111     int width;
 112     int height;
 113     int phys_screen;
 114     int depth;
 115     cairo_t *cr;
 116     cairo_surface_t *surface;
 117     PangoLayout *layout;
 118 } DrawCtx;
 119
 120 DrawCtx *draw_context_new(Display *, int, int, int, Drawable);
 121 void draw_context_delete(DrawCtx **);
 122
 123 font_t *draw_font_new(Display *disp, char *fontname);
 124 void draw_font_delete(font_t **);
 125
 126 void draw_text(DrawCtx *, area_t, Alignment, int, char *, style_t);
 127 void draw_rectangle(DrawCtx *, area_t, float, Bool, XColor);
 128 void draw_rectangle_gradient(DrawCtx *, area_t, float, Bool, area_t, XColor *, XColor *, XColor *);
 129
 130 void draw_graph_setup(DrawCtx *);
 131 void draw_graph(DrawCtx *, area_t, int *, int *, int, Position, area_t, XColor *, XColor *, XColor *);
 132 void draw_graph_line(DrawCtx *, area_t, int *, int, Position, area_t, XColor *, XColor *, XColor *);
 133 void draw_circle(DrawCtx *, int, int, int, Bool, XColor);
 134 void draw_image(DrawCtx *, int, int, int, const char *);
 135 void draw_image_from_argb_data(DrawCtx *, int, int, int, int, int, unsigned char *);
 136 area_t draw_get_image_size(const char *filename);
 137 void draw_rotate(DrawCtx *, Drawable, int, int, double, int, int);
 138 unsigned short draw_textwidth(Display *, font_t *, const char *);
 139 Alignment draw_align_get_from_str(const char *);
 140 Bool draw_color_new(Display *, int, const char *, XColor *);
 141 void draw_style_init(Display *, int, cfg_t *, style_t *, style_t *);
 142
 143 void area_list_remove(area_t **, area_t *);
 144
 145 #endif
 146 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80