--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/u8g2/csrc/u8g2_message.c Tue Oct 08 12:00:31 2019 +0200
@@ -0,0 +1,197 @@
+/*
+
+ u8g2_message.c
+
+ 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 "u8g2.h"
+
+#define SPACE_BETWEEN_BUTTONS_IN_PIXEL 6
+#define SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL 3
+
+uint8_t u8g2_draw_button_line(u8g2_t *u8g2, u8g2_uint_t y, u8g2_uint_t w, uint8_t cursor, const char *s)
+{
+ u8g2_uint_t button_line_width;
+
+ uint8_t i;
+ uint8_t cnt;
+ uint8_t is_invert;
+
+ u8g2_uint_t d;
+ u8g2_uint_t x;
+
+ cnt = u8x8_GetStringLineCnt(s);
+
+
+ /* calculate the width of the button line */
+ button_line_width = 0;
+ for( i = 0; i < cnt; i++ )
+ {
+ button_line_width += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+ }
+ button_line_width += (cnt-1)*SPACE_BETWEEN_BUTTONS_IN_PIXEL; /* add some space between the buttons */
+
+ /* calculate the left offset */
+ d = 0;
+ if ( button_line_width < w )
+ {
+ d = w;
+ d -= button_line_width;
+ d /= 2;
+ }
+
+ /* draw the buttons */
+ x = d;
+ for( i = 0; i < cnt; i++ )
+ {
+ is_invert = 0;
+ if ( i == cursor )
+ is_invert = 1;
+
+ u8g2_DrawUTF8Line(u8g2, x, y, 0, u8x8_GetStringLineStart(i, s), 1, is_invert);
+ x += u8g2_GetUTF8Width(u8g2, u8x8_GetStringLineStart(i, s));
+ x += SPACE_BETWEEN_BUTTONS_IN_PIXEL;
+ }
+
+ /* return the number of buttons */
+ return cnt;
+}
+
+/*
+ title1: Multiple lines,separated by '\n'
+ title2: A single line/string which is terminated by '\0' or '\n' . "title2" accepts the return value from u8x8_GetStringLineStart()
+ title3: Multiple lines,separated by '\n'
+ buttons: one more more buttons separated by '\n' and terminated with '\0'
+ side effects:
+ u8g2_SetFontDirection(u8g2, 0);
+ u8g2_SetFontPosBaseline(u8g2);
+*/
+
+uint8_t u8g2_UserInterfaceMessage(u8g2_t *u8g2, const char *title1, const char *title2, const char *title3, const char *buttons)
+{
+ uint8_t height;
+ uint8_t line_height;
+ u8g2_uint_t pixel_height;
+ u8g2_uint_t y, yy;
+
+ uint8_t cursor = 0;
+ uint8_t button_cnt;
+ uint8_t event;
+
+ /* only horizontal strings are supported, so force this here */
+ u8g2_SetFontDirection(u8g2, 0);
+
+ /* force baseline position */
+ u8g2_SetFontPosBaseline(u8g2);
+
+
+ /* calculate line height */
+ line_height = u8g2_GetAscent(u8g2);
+ line_height -= u8g2_GetDescent(u8g2);
+
+ /* calculate overall height of the message box in lines*/
+ height = 1; /* button line */
+ height += u8x8_GetStringLineCnt(title1);
+ if ( title2 != NULL )
+ height++;
+ height += u8x8_GetStringLineCnt(title3);
+
+ /* calculate the height in pixel */
+ pixel_height = height;
+ pixel_height *= line_height;
+
+ /* ... and add the space between the text and the buttons */
+ pixel_height +=SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+
+ /* calculate offset from top */
+ y = 0;
+ if ( pixel_height < u8g2_GetDisplayHeight(u8g2) )
+ {
+ y = u8g2_GetDisplayHeight(u8g2);
+ y -= pixel_height;
+ y /= 2;
+ }
+ y += u8g2_GetAscent(u8g2);
+
+
+ for(;;)
+ {
+ u8g2_FirstPage(u8g2);
+ do
+ {
+ yy = y;
+ /* draw message box */
+
+ yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title1);
+ if ( title2 != NULL )
+ {
+ u8g2_DrawUTF8Line(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), title2, 0, 0);
+ yy+=line_height;
+ }
+ yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title3);
+ yy += SPACE_BETWEEN_TEXT_AND_BUTTONS_IN_PIXEL;
+
+ button_cnt = u8g2_draw_button_line(u8g2, yy, u8g2_GetDisplayWidth(u8g2), cursor, buttons);
+
+ } while( u8g2_NextPage(u8g2) );
+
+#ifdef U8G2_REF_MAN_PIC
+ return 0;
+#endif
+
+ for(;;)
+ {
+ event = u8x8_GetMenuEvent(u8g2_GetU8x8(u8g2));
+ if ( event == U8X8_MSG_GPIO_MENU_SELECT )
+ return cursor+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 )
+ {
+ cursor++;
+ if ( cursor >= button_cnt )
+ cursor = 0;
+ break;
+ }
+ else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
+ {
+ if ( cursor == 0 )
+ cursor = button_cnt;
+ cursor--;
+ break;
+ }
+ }
+ }
+ /* never reached */
+ //return 0;
+}
+