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u8g2-copy
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draw frame

This commit is contained in:
olikraus 2016-04-23 08:42:28 +02:00
parent 9fca49da84
commit c2e377e573
3 changed files with 29 additions and 0 deletions
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1
csrc/u8g2.h
View File

@ -416,6 +416,7 @@ uint8_t u8g2_IsIntersection(u8g2_t *u8g2, u8g2_uint_t x0, u8g2_uint_t y0, u8g2_u
/*==========================================*/
/* u8g2_box.c */
void u8g2_DrawBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h);
void u8g2_DrawFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h);
/*==========================================*/

25
csrc/u8g2_box.c
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@ -20,3 +20,28 @@ void u8g2_DrawBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g
} while( h != 0 );
}
/*
draw a frame (empty box)
restriction: does not work for w = 0 or h = 0
ToDo:
pixel in the corners are drawn twice. This could be optimized.
*/
void u8g2_DrawFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h)
{
u8g2_uint_t xtmp = x;
#ifdef U8G2_WITH_INTERSECTION
if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
return;
#endif /* U8G2_WITH_INTERSECTION */
u8g2_DrawHVLine(u8g2, x, y, w, 0);
u8g2_DrawHVLine(u8g2, x, y, h, 1);
x+=w;
x--;
u8g2_DrawHVLine(u8g2, x, y, h, 1);
y+=h;
y--;
u8g2_DrawHVLine(u8g2, xtmp, y, w, 0);
}

3
sys/utf8/box_picture_loop/main.c
View File

@ -24,7 +24,10 @@ int main(void)
u8g2_DrawBox(&u8g2, 2, 3, 7, 9);
u8g2_DrawBox(&u8g2, 12, 3, 2, 13);
u8g2_DrawBox(&u8g2, 12,17, 13, 2);
u8g2_DrawFrame(&u8g2, 2,21, 11, 7);
u8g2_DrawFrame(&u8g2, 25,24, 27, 5);
u8g2_DrawStr(&u8g2, 30, 10, "DrawBox");
u8g2_DrawStr(&u8g2, 30, 20, "DrawFrame");
} while( u8g2_NextPage(&u8g2) );
utf8_show();