219 lines
5.2 KiB
C
219 lines
5.2 KiB
C
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/*
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u8g2_bitmap.c
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Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
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Copyright (c) 2016, 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 "u8g2.h"
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void u8g2_SetBitmapMode(u8g2_t *u8g2, uint8_t is_transparent) {
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u8g2->bitmap_transparency = is_transparent;
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}
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/*
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x,y Position on the display
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len Length of bitmap line in pixel. Note: This differs from u8glib which had a bytecount here.
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b Pointer to the bitmap line.
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Only draw pixels which are set.
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*/
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void u8g2_DrawHorizontalBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
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{
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uint8_t mask;
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uint8_t color = u8g2->draw_color;
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uint8_t ncolor = (color == 0 ? 1 : 0);
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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mask = 128;
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while(len > 0)
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{
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if ( *b & mask ) {
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u8g2->draw_color = color;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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} else if ( u8g2->bitmap_transparency == 0 ) {
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u8g2->draw_color = ncolor;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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}
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x++;
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mask >>= 1;
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if ( mask == 0 )
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{
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mask = 128;
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b++;
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}
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len--;
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}
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u8g2->draw_color = color;
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}
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/* u8glib compatible bitmap draw function */
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void u8g2_DrawBitmap(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t cnt, u8g2_uint_t h, const uint8_t *bitmap)
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{
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u8g2_uint_t w;
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w = cnt;
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w *= 8;
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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while( h > 0 )
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{
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u8g2_DrawHorizontalBitmap(u8g2, x, y, w, 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 u8g2_DrawHXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
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{
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uint8_t mask;
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uint8_t color = u8g2->draw_color;
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uint8_t ncolor = (color == 0 ? 1 : 0);
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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mask = 1;
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while(len > 0) {
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if ( *b & mask ) {
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u8g2->draw_color = color;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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} else if ( u8g2->bitmap_transparency == 0 ) {
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u8g2->draw_color = ncolor;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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}
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x++;
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mask <<= 1;
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if ( mask == 0 )
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{
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mask = 1;
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b++;
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}
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len--;
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}
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u8g2->draw_color = color;
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}
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void u8g2_DrawXBM(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
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{
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u8g2_uint_t blen;
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blen = w;
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blen += 7;
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blen >>= 3;
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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while( h > 0 )
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{
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u8g2_DrawHXBM(u8g2, x, y, w, bitmap);
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bitmap += blen;
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y++;
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h--;
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}
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}
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void u8g2_DrawHXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t len, const uint8_t *b)
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{
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uint8_t mask;
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uint8_t color = u8g2->draw_color;
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uint8_t ncolor = (color == 0 ? 1 : 0);
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+len, y+1) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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mask = 1;
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while(len > 0)
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{
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if( u8x8_pgm_read(b) & mask ) {
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u8g2->draw_color = color;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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} else if( u8g2->bitmap_transparency == 0 ) {
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u8g2->draw_color = ncolor;
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u8g2_DrawHVLine(u8g2, x, y, 1, 0);
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}
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x++;
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mask <<= 1;
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if ( mask == 0 )
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{
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mask = 1;
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b++;
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}
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len--;
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}
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u8g2->draw_color = color;
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}
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void u8g2_DrawXBMP(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, const uint8_t *bitmap)
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{
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u8g2_uint_t blen;
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blen = w;
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blen += 7;
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blen >>= 3;
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#ifdef U8G2_WITH_INTERSECTION
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if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
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return;
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#endif /* U8G2_WITH_INTERSECTION */
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while( h > 0 )
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{
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u8g2_DrawHXBMP(u8g2, x, y, w, bitmap);
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bitmap += blen;
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y++;
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h--;
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}
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}
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