gui.c

   1 #include <stdbool.h>
   2 #include <Eina.h>
   3 #include <Evas.h>
   4 #include <Ecore.h>
   5 #include <Ecore_Evas.h>
   6 #include "config.h"
   7 #include "kexec.h"
   8 #include "util.h"
   9
  10 /* XXX: replace hardcoded values with runtime information */
  11 #define SCREEN_WIDTH 480
  12 #define SCREEN_HEIGHT 640
  13
  14 /* drawing related stuff */
  15 static Ecore_Evas *ee;
  16 static Evas *evas;
  17
  18 void poweroff(void *data, Evas *evas, Evas_Object *obj, void *event);
  19 static void draw_item_border(Evas_Object *item);
  20
  21 typedef struct {
  22         const char *text;
  23         const char *logo;
  24         void(*callback)(void*, Evas*, Evas_Object*, void *);
  25 } MenuItem;
  26
  27 MenuItem menu[] = {
  28         { "Power Off", POWEROFF_LOGO, poweroff },
  29 };
  30
  31 void poweroff(void *data, Evas *evas, Evas_Object *item, void *event) {
  32         draw_item_border(item);
  33         system("poweroff");
  34 }
  35
  36 static void bootitem_clicked(void *data, Evas *evas, Evas_Object *item, void *event) {
  37         draw_item_border(item);
  38         boot_kernel((BootItem*)data);
  39         /* XXX: shouldn't be reached, display an error message? */
  40 }
  41
  42 static bool canvas_init(){
  43         if (!ecore_init() || !ecore_evas_init())
  44                 return false;
  45
  46         /* XXX: fixed dimensions */
  47         if (getenv("DISPLAY"))
  48                 ee = ecore_evas_software_x11_new(NULL, 0, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
  49         else
  50                 ee = ecore_evas_fb_new(NULL, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
  51
  52         if (!ee)
  53                 return false;
  54
  55         ecore_evas_title_set(ee, APPNAME);
  56         ecore_evas_borderless_set(ee, 0);
  57         ecore_evas_show(ee);
  58
  59         evas = ecore_evas_get(ee);
  60         evas_font_path_append(evas, FONT_PATH);
  61
  62         return true;
  63 }
  64
  65 static void draw_item(const char *text, const char *logo, void(*callback)(void*, Evas*, Evas_Object*, void *),
  66                       void *data, int x, int y) {
  67
  68         Evas_Object *ebox, *elogo, *etext;
  69
  70         elogo = evas_object_image_add(evas);
  71         evas_object_image_file_set(elogo, logo, NULL);
  72         evas_object_image_fill_set(elogo, 0, 0, LOGO_WIDTH, LOGO_HEIGHT);
  73         evas_object_resize(elogo, LOGO_WIDTH, LOGO_HEIGHT);
  74         evas_object_show(elogo);
  75
  76         etext = evas_object_text_add(evas);
  77         evas_object_text_font_set(etext, FONT, FONT_SIZE);
  78         evas_object_text_text_set(etext, text);
  79         evas_object_show(etext);
  80
  81         ebox = evas_object_box_add(evas);
  82         evas_object_box_align_set(ebox, 0, 0.5);
  83         evas_object_box_padding_set(ebox, 10, 10);
  84         evas_object_move(ebox, x, y);
  85         evas_object_resize(ebox, SCREEN_WIDTH, LOGO_HEIGHT);
  86         evas_object_box_append(ebox, elogo);
  87         evas_object_box_append(ebox, etext);
  88         evas_object_event_callback_add(ebox, EVAS_CALLBACK_MOUSE_UP, callback, data);
  89
  90         evas_object_show(ebox);
  91 }
  92
  93 static void draw_item_border(Evas_Object *item) {
  94         Evas_Object *eline;
  95         Evas_Coord x, y, w, h;
  96         evas_object_geometry_get(item, &x, &y, &w, &h);
  97         eline = evas_object_line_add(evas);
  98         evas_object_line_xy_set(eline, x, y, x+w, y);
  99         evas_object_show(eline);
 100         eline = evas_object_line_add(evas);
 101         evas_object_line_xy_set(eline, x, y, x, y+h);
 102         evas_object_show(eline);
 103         eline = evas_object_line_add(evas);
 104         evas_object_line_xy_set(eline, x+w, y, x+w, y+h);
 105         evas_object_show(eline);
 106         eline = evas_object_line_add(evas);
 107         evas_object_line_xy_set(eline, x, y+h, x+w, y+h);
 108         evas_object_show(eline);
 109 }
 110
 111 int gui(int argc, char **argv) {
 112
 113         if (!canvas_init()) {
 114                 eprint("Couldn't init GUI\n");
 115                 return 1;
 116         }
 117
 118         /* search for system images to boot and display them in a list */
 119         Eina_List *l, *systems = scan_system();
 120         int i, y = 0;
 121         BootItem *s;
 122
 123         EINA_LIST_FOREACH(systems, l, s) {
 124                 draw_item(s->dev, s->logo, bootitem_clicked, s,  0, y);
 125                 y += LOGO_HEIGHT;
 126         }
 127
 128         /* add pre defined menu entries */
 129         for (i = 0; i < countof(menu); i++) {
 130                 draw_item(menu[i].text, menu[i].logo, menu[i].callback, NULL,  0, y);
 131                 y += LOGO_HEIGHT;
 132         }
 133
 134         ecore_main_loop_begin();
 135
 136         return 0;
 137 }