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  1. #ifndef KOLIBRI_GUI_H
  2. #define KOLIBRI_GUI_H
  3.  
  4. #include "stdlib.h" /* for malloc() */
  5. #include <kos32sys.h>
  6.  
  7. #include "kolibri_debug.h" /* work with debug board */
  8.  
  9. /* boxlib loader */
  10. #include "kolibri_boxlib.h"
  11.  
  12. /* All supported GUI elements included */
  13. #include "kolibri_gui_elements.h"
  14.  
  15. enum KOLIBRI_GUI_EVENTS {
  16.   KOLIBRI_EVENT_REDRAW = 1,   /* Window and window elements should be redrawn */
  17.   KOLIBRI_EVENT_KEY = 2,      /* A key on the keyboard was pressed */
  18.   KOLIBRI_EVENT_BUTTON = 3,   /* A button was clicked with the mouse */
  19.   KOLIBRI_EVENT_MOUSE = 6     /* Mouse activity (movement, button press) was detected */
  20. };
  21.  
  22. void kolibri_handle_event_redraw(struct kolibri_window* some_window)
  23. {
  24.   /*  Draw windows with system color table. */
  25.  
  26.   BeginDraw();
  27.  
  28.   DrawWindow(some_window->topleftx, some_window->toplefty,
  29.              some_window->sizex, some_window->sizey,
  30.              some_window->window_title,
  31.              kolibri_color_table.color_work_area, some_window->XY);
  32.  
  33.   /* Enumerate and draw all window elements here */
  34.   if(some_window->elements) /* Draw all elements added to window */
  35.     {
  36.       struct kolibri_window_element* current_element = some_window -> elements;
  37.      
  38.       do
  39.         {
  40.           /* The redraw_fn serves as draw_fn on initial draw */
  41.           if(kolibri_gui_op_table[current_element -> type].redraw_fn)
  42.             kolibri_gui_op_table[current_element -> type].redraw_fn(current_element -> element);
  43.          
  44.           switch(current_element -> type)
  45.             {
  46.             case KOLIBRI_EDIT_BOX:
  47.             case KOLIBRI_CHECK_BOX:
  48.               __asm__ volatile("push $0x13371337"::); /* Random value pushed to balance stack */
  49.                                                       /* otherwise edit_box_draw leaves stack unbalanced */
  50.                                                       /* and GCC jumps like a crazy motha' fucka' */
  51.               break;
  52.             }
  53.  
  54.           current_element = current_element -> next;
  55.          
  56.         } while(current_element != some_window->elements); /* Have we covered all elements? */
  57.     }
  58. }
  59.  
  60. void kolibri_handle_event_key(struct kolibri_window* some_window)
  61. {
  62.   /* Enumerate and trigger key handling functions of window elements here */
  63.   if(some_window->elements)
  64.     {
  65.       struct kolibri_window_element *current_element = some_window -> elements;
  66.  
  67.       do
  68.         {
  69.           /* Only execute if the function pointer isn't NULL */
  70.           if(kolibri_gui_op_table[current_element -> type].key_fn)
  71.             kolibri_gui_op_table[current_element -> type].key_fn(current_element -> element);
  72.          
  73.           current_element = current_element -> next;
  74.         } while(current_element != some_window->elements); /* Have we covered all elements? */
  75.     }
  76. }
  77.  
  78. void kolibri_handle_event_mouse(struct kolibri_window* some_window)
  79. {
  80.   /* Enumerate and trigger mouse handling functions of window elements here */
  81.   if(some_window->elements)
  82.     {
  83.       struct kolibri_window_element *current_element = some_window -> elements;
  84.  
  85.       do
  86.         {
  87.          
  88.           if(kolibri_gui_op_table[current_element -> type].mouse_fn)
  89.             kolibri_gui_op_table[current_element -> type].mouse_fn(current_element -> element);
  90.  
  91.           current_element = current_element -> next;
  92.         } while(current_element != some_window->elements); /* Have we covered all elements? */
  93.     }
  94. }
  95.  
  96. void kolibri_exit(void)
  97. {
  98.   __asm__ volatile ("int $0x40"::"a"(-1));
  99. }
  100.  
  101. int kolibri_gui_init(void)
  102. {
  103.   int boxlib_init_status = kolibri_boxlib_init();
  104.  
  105.   if(boxlib_init_status == 0)
  106.     debug_board_write_str("ashmew2 is happy: Kolibri GUI Successfully Initialized.\n");
  107.   else
  108.     {
  109.       debug_board_write_str("ashmew2 is sad: Kolibri GUI Failed to initialize.\n");
  110.       kolibri_exit();
  111.     }
  112.  
  113.   /* Initialize the global operation table which handles event functions of */
  114.   /* each individual element type */
  115.   kolibri_init_gui_op_table();
  116.  
  117.   /* Get the current color table for Kolibri and store in global table*/
  118.   kolibri_get_system_colors(&kolibri_color_table);
  119.  
  120.   /* Set up system events for buttons, mouse and keyboard and redraw */
  121.   /* Also set filters so that window receives mouse events only when active
  122.      and mouse inside window */
  123.   __asm__ volatile("int $0x40"::"a"(40), "b"(0xC0000027));
  124. }
  125.  
  126. /* Note: The current implementation tries to automatically colors
  127.    GUI elements with system theme */
  128.  
  129. #endif /* KOLIBRI_GUI_H */
  130.