apps/gui/buttonbar.c

   1 /***************************************************************************
   2  *             __________               __   ___.
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   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) Linus Nielsen Feltzing (2002)
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 /*
  20 2005 Kevin Ferrare :
  21  - Multi screen support
  22  - Rewrote a lot of code to avoid global vars and make it accept eventually
  23    more that 3 buttons on the bar (just the prototype of gui_buttonbar_set
  24    and the constant BUTTONBAR_MAX_BUTTONS to modify)
  25 */
  26 #include "config.h"
  27 #include "buttonbar.h"
  28
  29 #ifdef HAS_BUTTONBAR
  30
  31 #include "lcd.h"
  32 #include "font.h"
  33 #include "string.h"
  34 #include "settings.h"
  35
  36 void gui_buttonbar_init(struct gui_buttonbar * buttonbar)
  37 {
  38     gui_buttonbar_unset(buttonbar);
  39 }
  40
  41 void gui_buttonbar_set_display(struct gui_buttonbar * buttonbar,
  42                                struct screen * display)
  43 {
  44     buttonbar->display = display;
  45 }
  46
  47 static void gui_buttonbar_draw_button(struct gui_buttonbar * buttonbar, int num)
  48 {
  49     int xpos, ypos, button_width, text_width;
  50     int fh;
  51     struct screen * display = buttonbar->display;
  52     display->getstringsize("M", NULL, &fh);
  53
  54     button_width = display->width/BUTTONBAR_MAX_BUTTONS;
  55     xpos = num * button_width;
  56     ypos = display->height - fh;
  57
  58     if(buttonbar->caption[num][0] != 0)
  59     {
  60         /* center the text */
  61         text_width = display->getstringsize(buttonbar->caption[num], NULL, NULL);
  62         display->putsxy(xpos + (button_width - text_width)/2,
  63                         ypos, buttonbar->caption[num]);
  64     }
  65
  66     display->set_drawmode(DRMODE_COMPLEMENT);
  67     display->fillrect(xpos, ypos, button_width - 1, fh);
  68     display->set_drawmode(DRMODE_SOLID);
  69 }
  70
  71 void gui_buttonbar_set(struct gui_buttonbar * buttonbar,
  72                        const char *caption1,
  73                        const char *caption2,
  74                        const char *caption3)
  75 {
  76     gui_buttonbar_unset(buttonbar);
  77     if(caption1)
  78     {
  79         strncpy(buttonbar->caption[0], caption1, 7);
  80         buttonbar->caption[0][7] = 0;
  81     }
  82     if(caption2)
  83     {
  84         strncpy(buttonbar->caption[1], caption2, 7);
  85         buttonbar->caption[1][7] = 0;
  86     }
  87     if(caption3)
  88     {
  89         strncpy(buttonbar->caption[2], caption3, 7);
  90         buttonbar->caption[2][7] = 0;
  91     }
  92 }
  93
  94 void gui_buttonbar_unset(struct gui_buttonbar * buttonbar)
  95 {
  96     int i;
  97     for(i = 0;i < BUTTONBAR_MAX_BUTTONS;i++)
  98         buttonbar->caption[i][0] = 0;
  99 }
 100
 101 void gui_buttonbar_draw(struct gui_buttonbar * buttonbar)
 102 {
 103     struct screen * display = buttonbar->display;
 104     screen_has_buttonbar(display, gui_buttonbar_isset(buttonbar));
 105     if(!global_settings.buttonbar || !display->has_buttonbar)
 106         return;
 107     int i;
 108     display->setfont(FONT_SYSFIXED);
 109
 110     display->set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 111     display->fillrect(0, display->height - BUTTONBAR_HEIGHT,
 112                       display->width, BUTTONBAR_HEIGHT);
 113     display->set_drawmode(DRMODE_SOLID);
 114
 115     for(i = 0;i < BUTTONBAR_MAX_BUTTONS;i++)
 116         gui_buttonbar_draw_button(buttonbar, i);
 117     display->update_rect(0, display->height - BUTTONBAR_HEIGHT,
 118                          display->width, BUTTONBAR_HEIGHT);
 119     display->setfont(FONT_UI);
 120 }
 121
 122 bool gui_buttonbar_isset(struct gui_buttonbar * buttonbar)
 123 {
 124     /* If all buttons are unset, the button bar is considered disabled */
 125     int i;
 126     for(i = 0;i < BUTTONBAR_MAX_BUTTONS;i++)
 127         if(buttonbar->caption[i][0] != 0)
 128             return true;
 129     return false;
 130 }
 131
 132 #endif /* HAS_BUTTONBAR */