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UI Message

This commit is contained in:
olikraus 2016-05-23 22:35:04 +02:00
parent 5ed9b21d52
commit 44bf9f3a72
1 changed files with 90 additions and 10 deletions
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100
csrc/u8x8_message.c
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@ -35,17 +35,97 @@
#include "u8x8.h"
void u8x8_draw_button(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t is_highlight, const char *s)
{
if ( is_highlight )
u8x8_SetInverseFont(u8x8, 1);
else
u8x8_SetInverseFont(u8x8, 0);
u8x8_DrawUTF8(u8x8, x, y, s);
}
void u8x8_draw_button_line(u8x8_t *u8x8, uint8_t x, uint8_t y, uint8_t w, uint8_t cursor, const char *s)
uint8_t u8x8_draw_button_line(u8x8_t *u8x8, uint8_t y, uint8_t w, uint8_t cursor, const char *s)
{
uint8_t i;
uint8_t cnt;
uint8_t total;
uint8_t d;
uint8_t x;
cnt = u8x8_GetStringLineCnt(s);
/* calculate the width of the button */
total = 0;
for( i = 0; i < cnt; i++ )
{
total += u8x8_GetUTF8Len(u8x8, u8x8_GetStringLine(i, s));
}
total += (cnt-1); /* had one space between the buttons */
/* calculate the left offset */
d = 0;
if ( total < w )
{
d = w;
d -= total;
d /= 2;
}
/* draw the buttons */
x = d;
for( i = 0; i < cnt; i++ )
{
if ( i == cursor )
u8x8_SetInverseFont(u8x8, 1);
else
u8x8_SetInverseFont(u8x8, 0);
x+=u8x8_DrawUTF8(x, y, u8x8_GetStringLine(i, s));
x+=u8x8_DrawUTF8(x, y, " ");
}
/* return the number of buttons */
return cnt;
}
uint8_t u8x8_UserInterfaceMessage(u8x8_t *u8x8, const char *title1, const char *title2, const char *buttons, )
{
uint8_t height;
uint8_t y;
uint8_t cursor = 0;
uint8_t button_cnt;
/* calculate overall height of the message box */
height = 1; /* button line */
height += u8x8_GetStringLineCnt(title1);
height += u8x8_GetStringLineCnt(title2);
/* calculate offset from the top */
y = 0;
if ( u8x8_GetRows(u8x8) < height )
{
y = height;
y -= u8x8_GetRows(u8x8);
y /= 2;
}
y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title1);
y += u8x8_DrawUTF8Lines(u8x8, 0, y, u8x8_GetCols(u8x8), title2);
button_cnt = u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
for(;;)
{
event = u8x8_GetMenuEvent(u8x8);
if ( event == U8X8_MSG_GPIO_MENU_SELECT )
return cursor+1;
else if ( event == U8X8_MSG_GPIO_MENU_HOME )
break;
else if ( event == U8X8_MSG_GPIO_MENU_NEXT )
{
cursor++;
if ( cursor >= button_cnt )
cursor = 0;
u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
}
else if ( event == U8X8_MSG_GPIO_MENU_PREV )
{
if ( cursor == 0 )
cursor = button_cnt;
cursor--;
u8x8_draw_button_line(u8x8, y, u8x8_GetCols(u8x8), cursor, buttons);
}
}
return 0;
}