99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
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/*
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u8log_u8g2.c
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Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
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Copyright (c) 2018, 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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/*
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Draw the u8log text at the specified x/y position.
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x/y position is the reference position of the first char of the first line.
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the line height is
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u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2) + line_height_offset;
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line_height_offset can be set with u8log_SetLineHeightOffset()
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Use
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u8g2_SetFontRefHeightText(u8g2_t *u8g2);
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u8g2_SetFontRefHeightExtendedText(u8g2_t *u8g2);
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u8g2_SetFontRefHeightAll(u8g2_t *u8g2);
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to change the return values for u8g2_GetAscent and u8g2_GetDescent
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*/
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void u8g2_DrawLog(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8log_t *u8log)
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{
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u8g2_uint_t disp_x, disp_y;
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uint8_t buf_x, buf_y;
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uint8_t c;
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disp_y = y;
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u8g2_SetFontDirection(u8g2, 0);
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for( buf_y = 0; buf_y < u8log->height; buf_y++ )
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{
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disp_x = x;
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for( buf_x = 0; buf_x < u8log->width; buf_x++ )
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{
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c = u8log->screen_buffer[buf_y * u8log->width + buf_x];
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disp_x += u8g2_DrawGlyph(u8g2, disp_x, disp_y, c);
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}
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disp_y += u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2);
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disp_y += u8log->line_height_offset;
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}
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}
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/*
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u8lib callback for u8g2
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Only font direction 0 is supported: u8g2_SetFontDirection(u8g2, 0)
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Use
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u8g2_SetFontRefHeightText(u8g2_t *u8g2);
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u8g2_SetFontRefHeightExtendedText(u8g2_t *u8g2);
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u8g2_SetFontRefHeightAll(u8g2_t *u8g2);
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to change the top offset and the line height and
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u8log_SetLineHeightOffset(u8log_t *u8log, int8_t line_height_offset)
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to change the line height.
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*/
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void u8log_u8g2_cb(u8log_t * u8log)
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{
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u8g2_t *u8g2 = (u8g2_t *)(u8log->aux_data);
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if ( u8log->is_redraw_line || u8log->is_redraw_all )
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{
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u8g2_FirstPage(u8g2);
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do
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{
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u8g2_DrawLog( u8g2, 0, u8g2_GetAscent(u8g2), u8log);
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}
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while( u8g2_NextPage(u8g2) );
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}
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}
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