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 have 2 Pixmap (pix and pix_active).
   9 *
  10 * Area also manage the tree of visible 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
  44 typedef struct
  45 {
  46    Pixmap pmap;
  47    Color back;
  48    Border border;
  49 } Pmap;
  50
  51
  52 typedef struct {
  53    // absolute coordinate in panel
  54    int posx, posy;
  55    int width, height;
  56    Pmap pix;
  57    Pmap pix_active;
  58
  59    // list of child : Area object
  60    GSList *list;
  61
  62         // need compute position and width
  63         int resize;
  64    // need redraw Pixmap
  65    int redraw;
  66    int use_active, is_active;
  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, int active);
  77    void (*_resize)(void *obj);
  78    void (*_add_child)(void *obj);
  79    int (*_remove_child)(void *obj);
  80 } Area;
  81
  82
  83
  84 // draw background and foreground
  85 void refresh (Area *a);
  86
  87 // set 'redraw' on an area and childs
  88 void set_redraw (Area *a);
  89
  90 // draw pixmap and pixmap_active
  91 void draw (Area *a, int active);
  92 void draw_background (Area *a, cairo_t *c, int active);
  93
  94 void remove_area (Area *a);
  95 void add_area (Area *a);
  96 void free_area (Area *a);
  97
  98 // draw rounded rectangle
  99 void draw_rect(cairo_t *c, double x, double y, double w, double h, double r);
 100
 101 #endif
 102