--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/u8g2/csrc/u8x8_selection_list.c Tue Oct 08 12:00:31 2019 +0200
@@ -0,0 +1,173 @@
+/*
+
+ u8x8_selection_list.c
+
+ selection list with scroll option
+
+ Universal 8bit Graphics Library (https://github.com/olikraus/u8g2/)
+
+ Copyright (c) 2016, olikraus@gmail.com
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this list
+ of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice, this
+ list of conditions and the following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#include "u8x8.h"
+
+/*
+ increase the cursor position
+*/
+void u8sl_Next(u8sl_t *u8sl)
+{
+ u8sl->current_pos++;
+ if ( u8sl->current_pos >= u8sl->total )
+ {
+ u8sl->current_pos = 0;
+ u8sl->first_pos = 0;
+ }
+ else
+ {
+ if ( u8sl->first_pos + u8sl->visible <= u8sl->current_pos + 1 )
+ {
+ u8sl->first_pos = u8sl->current_pos - u8sl->visible + 1;
+ }
+ }
+}
+
+void u8sl_Prev(u8sl_t *u8sl)
+{
+ if ( u8sl->current_pos == 0 )
+ {
+ u8sl->current_pos = u8sl->total - 1;
+ u8sl->first_pos = 0;
+ if ( u8sl->total > u8sl->visible )
+ u8sl->first_pos = u8sl->total - u8sl->visible;
+ }
+ else
+ {
+ u8sl->current_pos--;
+ if ( u8sl->first_pos > u8sl->current_pos )
+ u8sl->first_pos = u8sl->current_pos;
+ }
+}
+
+void u8x8_DrawSelectionList(u8x8_t *u8x8, u8sl_t *u8sl, u8x8_sl_cb sl_cb, const void *aux)
+{
+ uint8_t i;
+ for( i = 0; i < u8sl->visible; i++ )
+ {
+ sl_cb(u8x8, u8sl, i+u8sl->first_pos, aux);
+ }
+}
+
+/* selection list with string line */
+void u8x8_sl_string_line_cb(u8x8_t *u8x8, u8sl_t *u8sl, uint8_t idx, const void *aux)
+{
+ const char *s;
+ uint8_t row;
+ /* calculate offset from display upper border */
+ row = u8sl->y;
+
+ /* calculate target pos */
+ row += idx;
+ row -= u8sl->first_pos;
+
+ /* check whether this is the current cursor line */
+ if ( idx == u8sl->current_pos )
+ u8x8_SetInverseFont(u8x8, 1);
+ else
+ u8x8_SetInverseFont(u8x8, 0);
+
+ /* get the line from the array */
+ s = u8x8_GetStringLineStart(idx, (const char *)aux);
+
+ /* draw the line */
+ if ( s == NULL )
+ s = "";
+ u8x8_DrawUTF8Line(u8x8, u8sl->x, row, u8x8_GetCols(u8x8), s);
+ u8x8_SetInverseFont(u8x8, 0);
+}
+
+/*
+ title: NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
+ start_pos: default position for the cursor (starts with 1)
+ sl: string list (list of strings separated by \n)
+ returns 0 if user has pressed the home key
+ returns the selected line+1 if user has pressed the select key (e.g. 1 for the first line)
+*/
+uint8_t u8x8_UserInterfaceSelectionList(u8x8_t *u8x8, const char *title, uint8_t start_pos, const char *sl)
+{
+ u8sl_t u8sl;
+ uint8_t event;
+ uint8_t title_lines;
+
+ if ( start_pos > 0 )
+ start_pos--;
+
+ u8sl.visible = u8x8_GetRows(u8x8);
+ u8sl.total = u8x8_GetStringLineCnt(sl);
+ u8sl.first_pos = 0;
+ u8sl.current_pos = start_pos;
+ u8sl.x = 0;
+ u8sl.y = 0;
+
+
+ //u8x8_ClearDisplay(u8x8); /* not required because all is 100% filled */
+ u8x8_SetInverseFont(u8x8, 0);
+
+ if ( title != NULL )
+ {
+ title_lines = u8x8_DrawUTF8Lines(u8x8, u8sl.x, u8sl.y, u8x8_GetCols(u8x8), title);
+ u8sl.y+=title_lines;
+ u8sl.visible-=title_lines;
+ }
+
+ if ( u8sl.current_pos >= u8sl.total )
+ u8sl.current_pos = u8sl.total-1;
+
+
+ u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);
+
+ for(;;)
+ {
+ event = u8x8_GetMenuEvent(u8x8);
+ if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+ return u8sl.current_pos+1;
+ else if ( event == U8X8_MSG_GPIO_MENU_HOME )
+ return 0;
+ else if ( event == U8X8_MSG_GPIO_MENU_NEXT || event == U8X8_MSG_GPIO_MENU_DOWN )
+ {
+ u8sl_Next(&u8sl);
+ u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);
+ }
+ else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
+ {
+ u8sl_Prev(&u8sl);
+ u8x8_DrawSelectionList(u8x8, &u8sl, u8x8_sl_string_line_cb, sl);
+ }
+ }
+}
+