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* Makefile, Scripts: new linter * About: remove ID from IC * Firmware: remove double define for DIVC/DIVR * Scripts: check folder names too. Docker: replace syntax check with make lint. * Reformat Sources and Migrate to new file naming convention * Docker: symlink clang-format-12 to clang-format * Add coding style guide
210 lines
6.9 KiB
C
210 lines
6.9 KiB
C
/*
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u8g2_buffer.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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#include <string.h>
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/*============================================*/
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void u8g2_ClearBuffer(u8g2_t* u8g2) {
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size_t cnt;
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cnt = u8g2_GetU8x8(u8g2)->display_info->tile_width;
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cnt *= u8g2->tile_buf_height;
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cnt *= 8;
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memset(u8g2->tile_buf_ptr, 0, cnt);
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}
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/*============================================*/
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static void u8g2_send_tile_row(u8g2_t* u8g2, uint8_t src_tile_row, uint8_t dest_tile_row) {
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uint8_t* ptr;
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uint16_t offset;
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uint8_t w;
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w = u8g2_GetU8x8(u8g2)->display_info->tile_width;
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offset = src_tile_row;
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ptr = u8g2->tile_buf_ptr;
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offset *= w;
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offset *= 8;
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ptr += offset;
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u8x8_DrawTile(u8g2_GetU8x8(u8g2), 0, dest_tile_row, w, ptr);
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}
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/*
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write the buffer to the display RAM.
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For most displays, this will make the content visible to the user.
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Some displays (like the SSD1606) require a u8x8_RefreshDisplay()
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*/
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static void u8g2_send_buffer(u8g2_t* u8g2) U8X8_NOINLINE;
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static void u8g2_send_buffer(u8g2_t* u8g2) {
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uint8_t src_row;
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uint8_t src_max;
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uint8_t dest_row;
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uint8_t dest_max;
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src_row = 0;
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src_max = u8g2->tile_buf_height;
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dest_row = u8g2->tile_curr_row;
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dest_max = u8g2_GetU8x8(u8g2)->display_info->tile_height;
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do {
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u8g2_send_tile_row(u8g2, src_row, dest_row);
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src_row++;
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dest_row++;
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} while(src_row < src_max && dest_row < dest_max);
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}
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/* same as u8g2_send_buffer but also send the DISPLAY_REFRESH message (used by SSD1606) */
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void u8g2_SendBuffer(u8g2_t* u8g2) {
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u8g2_send_buffer(u8g2);
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u8x8_RefreshDisplay(u8g2_GetU8x8(u8g2));
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}
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/*============================================*/
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void u8g2_SetBufferCurrTileRow(u8g2_t* u8g2, uint8_t row) {
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u8g2->tile_curr_row = row;
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u8g2->cb->update_dimension(u8g2);
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u8g2->cb->update_page_win(u8g2);
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}
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void u8g2_FirstPage(u8g2_t* u8g2) {
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if(u8g2->is_auto_page_clear) {
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u8g2_ClearBuffer(u8g2);
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}
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u8g2_SetBufferCurrTileRow(u8g2, 0);
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}
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uint8_t u8g2_NextPage(u8g2_t* u8g2) {
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uint8_t row;
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u8g2_send_buffer(u8g2);
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row = u8g2->tile_curr_row;
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row += u8g2->tile_buf_height;
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if(row >= u8g2_GetU8x8(u8g2)->display_info->tile_height) {
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u8x8_RefreshDisplay(u8g2_GetU8x8(u8g2));
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return 0;
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}
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if(u8g2->is_auto_page_clear) {
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u8g2_ClearBuffer(u8g2);
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}
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u8g2_SetBufferCurrTileRow(u8g2, row);
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return 1;
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}
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/*============================================*/
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/*
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Description:
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Update a sub area of the display, given by tile position, width and height.
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The arguments are "tile" coordinates. Any u8g2 rotation is ignored.
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This procedure only checks whether full buffer mode is active.
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There is no error checking for the arguments: It is the responsibility of the
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user to ensure, that the provided arguments are correct.
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Limitations:
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- Only available in full buffer mode (will not do anything in page mode)
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- Tile positions and sizes (pixel position divided by 8)
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- Any display rotation/mirror is ignored
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- Only works with displays, which support U8x8 API
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- Will not send the e-paper refresh message (will probably not work with e-paper devices)
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*/
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void u8g2_UpdateDisplayArea(u8g2_t* u8g2, uint8_t tx, uint8_t ty, uint8_t tw, uint8_t th) {
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uint16_t page_size;
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uint8_t* ptr;
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/* check, whether we are in full buffer mode */
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if(u8g2->tile_buf_height != u8g2_GetU8x8(u8g2)->display_info->tile_height)
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return; /* not in full buffer mode, do nothing */
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page_size = u8g2->pixel_buf_width; /* 8*u8g2->u8g2_GetU8x8(u8g2)->display_info->tile_width */
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ptr = u8g2_GetBufferPtr(u8g2);
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ptr += tx * 8;
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ptr += page_size * ty;
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while(th > 0) {
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u8x8_DrawTile(u8g2_GetU8x8(u8g2), tx, ty, tw, ptr);
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ptr += page_size;
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ty++;
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th--;
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}
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}
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/* same as sendBuffer, but does not send the ePaper refresh message */
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void u8g2_UpdateDisplay(u8g2_t* u8g2) {
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u8g2_send_buffer(u8g2);
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}
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/*============================================*/
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/* vertical_top memory architecture */
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void u8g2_WriteBufferPBM(u8g2_t* u8g2, void (*out)(const char* s)) {
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u8x8_capture_write_pbm_pre(u8g2_GetBufferTileWidth(u8g2), u8g2_GetBufferTileHeight(u8g2), out);
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u8x8_capture_write_pbm_buffer(
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u8g2_GetBufferPtr(u8g2),
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u8g2_GetBufferTileWidth(u8g2),
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u8g2_GetBufferTileHeight(u8g2),
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u8x8_capture_get_pixel_1,
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out);
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}
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void u8g2_WriteBufferXBM(u8g2_t* u8g2, void (*out)(const char* s)) {
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u8x8_capture_write_xbm_pre(u8g2_GetBufferTileWidth(u8g2), u8g2_GetBufferTileHeight(u8g2), out);
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u8x8_capture_write_xbm_buffer(
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u8g2_GetBufferPtr(u8g2),
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u8g2_GetBufferTileWidth(u8g2),
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u8g2_GetBufferTileHeight(u8g2),
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u8x8_capture_get_pixel_1,
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out);
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}
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/* horizontal right memory architecture */
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/* SH1122, LD7032, ST7920, ST7986, LC7981, T6963, SED1330, RA8835, MAX7219, LS0 */
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void u8g2_WriteBufferPBM2(u8g2_t* u8g2, void (*out)(const char* s)) {
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u8x8_capture_write_pbm_pre(u8g2_GetBufferTileWidth(u8g2), u8g2_GetBufferTileHeight(u8g2), out);
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u8x8_capture_write_pbm_buffer(
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u8g2_GetBufferPtr(u8g2),
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u8g2_GetBufferTileWidth(u8g2),
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u8g2_GetBufferTileHeight(u8g2),
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u8x8_capture_get_pixel_2,
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out);
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}
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void u8g2_WriteBufferXBM2(u8g2_t* u8g2, void (*out)(const char* s)) {
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u8x8_capture_write_xbm_pre(u8g2_GetBufferTileWidth(u8g2), u8g2_GetBufferTileHeight(u8g2), out);
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u8x8_capture_write_xbm_buffer(
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u8g2_GetBufferPtr(u8g2),
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u8g2_GetBufferTileWidth(u8g2),
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u8g2_GetBufferTileHeight(u8g2),
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u8x8_capture_get_pixel_2,
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out);
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}
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