This commit is contained in:
kraus 2018-08-31 00:12:22 +02:00
parent 7646ef3543
commit 8fdf3641f7
3 changed files with 213 additions and 0 deletions

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@ -395,6 +395,8 @@ void u8g2_ClearDisplay(u8g2_t *u8g2);
/*==========================================*/
/* u8g2_setup.c */
void u8g2_draw_l90_r0(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir);
extern const u8g2_cb_t u8g2_cb_r0;
extern const u8g2_cb_t u8g2_cb_r1;
extern const u8g2_cb_t u8g2_cb_r2;

12
sys/sdl/xbm2/Makefile Normal file
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@ -0,0 +1,12 @@
CFLAGS = -g -Wall -I../../../csrc/. `sdl2-config --cflags`
SRC = $(shell ls ../../../csrc/*.c) $(shell ls ../common/*.c ) main.c
OBJ = $(SRC:.c=.o)
helloworld: $(OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ) `sdl2-config --libs` -o u8g2_sdl
clean:
-rm $(OBJ) u8g2_sdl

199
sys/sdl/xbm2/main.c Normal file
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@ -0,0 +1,199 @@
#include "u8g2.h"
#include <stdio.h>
u8g2_t u8g2;
u8g2_t u8g2_bitmap;
/* width and height must be multipe of 8 */
#define BITMAP_WIDTH 16
#define BITMAP_HEIGHT 16
static unsigned char bitmap_data[BITMAP_WIDTH/8*BITMAP_HEIGHT];
static void u8g2_draw_pixel_horizontal_xbm(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y)
{
uint16_t offset;
uint8_t *ptr;
uint8_t bit_pos, mask;
bit_pos = x; /* overflow truncate is ok here... */
bit_pos &= 7; /* ... because only the lowest 3 bits are needed */
mask = 1;
mask <<= bit_pos;
x >>= 3;
offset = y; /* y might be 8 or 16 bit, but we need 16 bit, so use a 16 bit variable */
offset *= u8g2->pixel_buf_width/8;
offset += x;
ptr = u8g2->tile_buf_ptr;
ptr += offset;
if ( u8g2->draw_color <= 1 )
*ptr |= mask;
if ( u8g2->draw_color != 1 )
*ptr ^= mask;
}
/*
x,y Upper left position of the line within the local buffer (not the display!)
len length of the line in pixel, len must not be 0
dir 0: horizontal line (left to right)
1: vertical line (top to bottom)
asumption:
all clipping done
*/
void u8g2_ll_hvline_xbm(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, uint8_t dir)
{
if ( dir == 0 )
{
do
{
u8g2_draw_pixel_horizontal_xbm(u8g2, x, y);
x++;
len--;
} while( len != 0 );
}
else
{
do
{
u8g2_draw_pixel_horizontal_xbm(u8g2, x, y);
y++;
len--;
} while( len != 0 );
}
}
void u8g2_update_dimension_xbm(u8g2_t *u8g2)
{
/* do nothing */
}
const u8g2_cb_t u8g2_cb_xbm = { u8g2_update_dimension_xbm, u8g2_draw_l90_r0 };
int main(void)
{
int x, y;
int k;
int i;
/* setup bitmap */
u8x8_SetupDefaults(u8g2_GetU8x8(&u8g2_bitmap));
u8g2_SetupBuffer(&u8g2_bitmap, bitmap_data, BITMAP_HEIGHT/8, u8g2_ll_hvline_xbm, &u8g2_cb_xbm);
u8g2_bitmap.pixel_buf_height = BITMAP_HEIGHT;
u8g2_bitmap.pixel_buf_width= ((BITMAP_WIDTH+7)/8)*8;
u8g2_bitmap.pixel_curr_row=0;
u8g2_bitmap.buf_y0 = 0;
u8g2_bitmap.buf_y1 = u8g2_bitmap.pixel_buf_height;
u8g2_bitmap.width = u8g2_bitmap.pixel_buf_width;
u8g2_bitmap.height = u8g2_bitmap.pixel_buf_height;
u8g2_bitmap.user_x0 = 0;
u8g2_bitmap.user_x1 = u8g2_bitmap.pixel_buf_width;
u8g2_bitmap.user_y0 = u8g2_bitmap.buf_y0;
u8g2_bitmap.user_y1 = u8g2_bitmap.buf_y1;
/* draw something into the bitmap */
/* send buffer is not required, in fact it MUST NOT BE CALLED */
u8g2_DrawLine(&u8g2_bitmap, 0, 0, 15, 15 );
u8g2_SetFont(&u8g2_bitmap, u8g2_font_6x10_tr);
u8g2_DrawStr(&u8g2_bitmap, 0, 11, "ABC");
/* setup target display */
u8g2_SetupBuffer_SDL_128x64_4(&u8g2, &u8g2_cb_r0);
u8x8_InitDisplay(u8g2_GetU8x8(&u8g2));
u8x8_SetPowerSave(u8g2_GetU8x8(&u8g2), 0);
u8g2_SetFont(&u8g2, u8g2_font_6x10_tf);
x = 30;
y = 31-7;
for(;;)
{
#ifdef U8G2_WITH_HVLINE_COUNT
u8g2.hv_cnt = 0UL;
#endif /* U8G2_WITH_HVLINE_COUNT */
/*
u8g2_ClearBuffer(&u8g2);
u8g2_SetFontDirection(&u8g2, 0);
u8g2_DrawStr(&u8g2, x, y, "ABC");
u8g2_SetFontDirection(&u8g2, 1);
u8g2_DrawStr(&u8g2, x, y, "abc");
u8g2_SetFontDirection(&u8g2, 2);
u8g2_DrawStr(&u8g2, x, y, "abc");
u8g2_SetFontDirection(&u8g2, 3);
u8g2_DrawStr(&u8g2, x, y, "abc");
u8g2_SendBuffer(&u8g2);
*/
u8g2_FirstPage(&u8g2);
i = 0;
do
{
u8g2_DrawXBMP(&u8g2, x, y, BITMAP_WIDTH, BITMAP_HEIGHT, u8g2_bitmap.tile_buf_ptr);
if ( i == 1 )
{
u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y0, 1, 0);
u8g2_DrawHVLine(&u8g2, u8g2.user_x0, u8g2.user_y1-1, 1, 0);
u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y1-1, 1, 0);
u8g2_DrawHVLine(&u8g2, u8g2.user_x1-1, u8g2.user_y0, 1, 0);
}
i++;
} while( u8g2_NextPage(&u8g2) );
#ifdef U8G2_WITH_HVLINE_COUNT
printf("hv cnt: %ld\n", u8g2.hv_cnt);
#endif /* U8G2_WITH_HVLINE_COUNT */
do
{
k = u8g_sdl_get_key();
} while( k < 0 );
if ( k == 273 ) y -= 1;
if ( k == 274 ) y += 1;
if ( k == 276 ) x -= 1;
if ( k == 275 ) x += 1;
if ( k == 'e' ) y -= 1;
if ( k == 'x' ) y += 1;
if ( k == 's' ) x -= 1;
if ( k == 'd' ) x += 1;
if ( k == 'q' ) break;
}
//u8x8_Set8x8Font(u8g2_GetU8x8(&u8g2), bdf_font);
//u8x8_Draw8x8String(u8g2_GetU8x8(&u8g2), 0, 0, "Hello World!");
return 0;
}