178 lines
4.0 KiB
C
Executable File
178 lines
4.0 KiB
C
Executable File
/*
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u8g_bitmap.c
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Universal 8bit Graphics Library
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Copyright (c) 2011, olikraus@gmail.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or other
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materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "u8g.h"
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void u8g_DrawHBitmap(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, const uint8_t *bitmap)
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{
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while( cnt > 0 )
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{
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u8g_Draw8Pixel(u8g, x, y, 0, *bitmap);
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bitmap++;
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cnt--;
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x+=8;
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}
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}
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void u8g_DrawBitmap(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, u8g_uint_t h, const uint8_t *bitmap)
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{
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if ( u8g_IsBBXIntersection(u8g, x, y, cnt*8, h) == 0 )
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return;
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while( h > 0 )
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{
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u8g_DrawHBitmap(u8g, x, y, cnt, bitmap);
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bitmap += cnt;
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y++;
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h--;
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}
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}
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void u8g_DrawHBitmapP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, const u8g_pgm_uint8_t *bitmap)
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{
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while( cnt > 0 )
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{
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u8g_Draw8Pixel(u8g, x, y, 0, u8g_pgm_read(bitmap));
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bitmap++;
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cnt--;
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x+=8;
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}
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}
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void u8g_DrawBitmapP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t cnt, u8g_uint_t h, const u8g_pgm_uint8_t *bitmap)
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{
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if ( u8g_IsBBXIntersection(u8g, x, y, cnt*8, h) == 0 )
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return;
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while( h > 0 )
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{
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u8g_DrawHBitmapP(u8g, x, y, cnt, bitmap);
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bitmap += cnt;
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y++;
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h--;
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}
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}
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/*=========================================================================*/
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static void u8g_DrawHXBM(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, const uint8_t *bitmap)
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{
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uint8_t d;
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x+=7;
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while( w >= 8 )
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{
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u8g_Draw8Pixel(u8g, x, y, 2, *bitmap);
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bitmap++;
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w-= 8;
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x+=8;
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}
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if ( w > 0 )
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{
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d = *bitmap;
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x -= 7;
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do
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{
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if ( d & 1 )
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u8g_DrawPixel(u8g, x, y);
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x++;
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w--;
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d >>= 1;
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} while ( w > 0 );
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}
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}
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void u8g_DrawXBM(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, const uint8_t *bitmap)
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{
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u8g_uint_t b;
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b = w;
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b += 7;
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b >>= 3;
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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while( h > 0 )
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{
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u8g_DrawHXBM(u8g, x, y, w, bitmap);
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bitmap += b;
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y++;
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h--;
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}
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}
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static void u8g_DrawHXBMP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, const u8g_pgm_uint8_t *bitmap)
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{
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uint8_t d;
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x+=7;
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while( w >= 8 )
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{
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u8g_Draw8Pixel(u8g, x, y, 2, u8g_pgm_read(bitmap));
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bitmap++;
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w-= 8;
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x+=8;
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}
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if ( w > 0 )
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{
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d = u8g_pgm_read(bitmap);
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x -= 7;
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do
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{
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if ( d & 1 )
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u8g_DrawPixel(u8g, x, y);
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x++;
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w--;
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d >>= 1;
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} while ( w > 0 );
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}
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}
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void u8g_DrawXBMP(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, const u8g_pgm_uint8_t *bitmap)
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{
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u8g_uint_t b;
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b = w;
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b += 7;
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b >>= 3;
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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while( h > 0 )
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{
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u8g_DrawHXBMP(u8g, x, y, w, bitmap);
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bitmap += b;
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y++;
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h--;
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}
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}
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