Dogcows Code - chaz/tint2/blob - src/util/area.h

   1 /**************************************************************************
   2 * Copyright (C) 2008 thierry lorthiois (lorthiois@bbsoft.fr)
   3 *
   4 * base class for all graphical objects (panel, taskbar, task, systray, clock, ...).
   5 * Area is at the begining of each object (&object == &area).
   6 *
   7 * Area manage the background and border drawing, size and padding.
   8 * Each Area has one Pixmap (pix).
   9 *
  10 * Area manage the tree of all objects. Parent object drawn before child object.
  11 *   panel -> taskbars -> tasks
  12 *         -> systray -> icons
  13 *         -> clock
  14 *
  15 * draw_foreground(obj) and resize(obj) are virtual function.
  16 *
  17 **************************************************************************/
  18
  19 #ifndef AREA_H
  20 #define AREA_H
  21
  22 #include <glib.h>
  23 #include <X11/Xlib.h>
  24 #include <cairo.h>
  25 #include <cairo-xlib.h>
  26
  27
  28 typedef struct
  29 {
  30         double color[3];
  31         double alpha;
  32         int width;
  33         int rounded;
  34 } Border;
  35
  36
  37 typedef struct
  38 {
  39         double color[3];
  40         double alpha;
  41 } Color;
  42
  43 typedef struct
  44 {
  45         Color back;
  46         Border border;
  47 } Background;
  48
  49
  50
  51 typedef struct {
  52         // coordinate relative to panel window
  53         int posx, posy;
  54         // width and height including border
  55         int width, height;
  56         Pixmap pix;
  57         Background *bg;
  58
  59         // list of child : Area object
  60         GSList *list;
  61
  62         int on_screen;
  63         // need compute position and width
  64         int resize;
  65         // need redraw Pixmap
  66         int redraw;
  67         // paddingxlr = horizontal padding left/right
  68         // paddingx = horizontal padding between childs
  69         int paddingxlr, paddingx, paddingy;
  70         // parent Area
  71         void *parent;
  72         // panel
  73         void *panel;
  74
  75         // each object can overwrite following function
  76         void (*_draw_foreground)(void *obj, cairo_t *c);
  77         void (*_resize)(void *obj);
  78         void (*_add_child)(void *obj);
  79         int (*_remove_child)(void *obj);
  80         const char* (*_get_tooltip_text)(void *obj);
  81 } Area;
  82
  83
  84
  85 // draw background and foreground
  86 void refresh (Area *a);
  87
  88 void size (Area *a);
  89
  90 // set 'redraw' on an area and childs
  91 void set_redraw (Area *a);
  92
  93 // draw pixmap
  94 void draw (Area *a);
  95 void draw_background (Area *a, cairo_t *c);
  96
  97 void remove_area (Area *a);
  98 void add_area (Area *a);
  99 void free_area (Area *a);
 100
 101 // draw rounded rectangle
 102 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r);
 103
 104 // clear pixmap with transparent color
 105 void clear_pixmap(Pixmap p, int x, int y, int w, int h);
 106 #endif
 107