--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/u8g2/csrc/u8g2_box.c Tue Oct 08 12:00:31 2019 +0200
@@ -0,0 +1,207 @@
+/*
+
+ u8g2_box.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"
+
+/*
+ draw a filled box
+ restriction: does not work for w = 0 or h = 0
+*/
+void u8g2_DrawBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h)
+{
+#ifdef U8G2_WITH_INTERSECTION
+ if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
+ return;
+#endif /* U8G2_WITH_INTERSECTION */
+ while( h != 0 )
+ {
+ u8g2_DrawHVLine(u8g2, x, y, w, 0);
+ y++;
+ h--;
+ }
+}
+
+
+/*
+ draw a frame (empty box)
+ restriction: does not work for w = 0 or h = 0
+ ToDo:
+ pixel in the corners are drawn twice. This could be optimized.
+*/
+void u8g2_DrawFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h)
+{
+ u8g2_uint_t xtmp = x;
+
+#ifdef U8G2_WITH_INTERSECTION
+ if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
+ return;
+#endif /* U8G2_WITH_INTERSECTION */
+
+ u8g2_DrawHVLine(u8g2, x, y, w, 0);
+ u8g2_DrawHVLine(u8g2, x, y, h, 1);
+ x+=w;
+ x--;
+ u8g2_DrawHVLine(u8g2, x, y, h, 1);
+ y+=h;
+ y--;
+ u8g2_DrawHVLine(u8g2, xtmp, y, w, 0);
+}
+
+
+
+
+void u8g2_DrawRBox(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, u8g2_uint_t r)
+{
+ u8g2_uint_t xl, yu;
+ u8g2_uint_t yl, xr;
+
+#ifdef U8G2_WITH_INTERSECTION
+ if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
+ return;
+#endif /* U8G2_WITH_INTERSECTION */
+
+ xl = x;
+ xl += r;
+ yu = y;
+ yu += r;
+
+ xr = x;
+ xr += w;
+ xr -= r;
+ xr -= 1;
+
+ yl = y;
+ yl += h;
+ yl -= r;
+ yl -= 1;
+
+ u8g2_DrawDisc(u8g2, xl, yu, r, U8G2_DRAW_UPPER_LEFT);
+ u8g2_DrawDisc(u8g2, xr, yu, r, U8G2_DRAW_UPPER_RIGHT);
+ u8g2_DrawDisc(u8g2, xl, yl, r, U8G2_DRAW_LOWER_LEFT);
+ u8g2_DrawDisc(u8g2, xr, yl, r, U8G2_DRAW_LOWER_RIGHT);
+
+ {
+ u8g2_uint_t ww, hh;
+
+ ww = w;
+ ww -= r;
+ ww -= r;
+ xl++;
+ yu++;
+
+ if ( ww >= 3 )
+ {
+ ww -= 2;
+ u8g2_DrawBox(u8g2, xl, y, ww, r+1);
+ u8g2_DrawBox(u8g2, xl, yl, ww, r+1);
+ }
+
+ hh = h;
+ hh -= r;
+ hh -= r;
+ //h--;
+ if ( hh >= 3 )
+ {
+ hh -= 2;
+ u8g2_DrawBox(u8g2, x, yu, w, hh);
+ }
+ }
+}
+
+
+void u8g2_DrawRFrame(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, u8g2_uint_t w, u8g2_uint_t h, u8g2_uint_t r)
+{
+ u8g2_uint_t xl, yu;
+
+#ifdef U8G2_WITH_INTERSECTION
+ if ( u8g2_IsIntersection(u8g2, x, y, x+w, y+h) == 0 )
+ return;
+#endif /* U8G2_WITH_INTERSECTION */
+
+ xl = x;
+ xl += r;
+ yu = y;
+ yu += r;
+
+ {
+ u8g2_uint_t yl, xr;
+
+ xr = x;
+ xr += w;
+ xr -= r;
+ xr -= 1;
+
+ yl = y;
+ yl += h;
+ yl -= r;
+ yl -= 1;
+
+ u8g2_DrawCircle(u8g2, xl, yu, r, U8G2_DRAW_UPPER_LEFT);
+ u8g2_DrawCircle(u8g2, xr, yu, r, U8G2_DRAW_UPPER_RIGHT);
+ u8g2_DrawCircle(u8g2, xl, yl, r, U8G2_DRAW_LOWER_LEFT);
+ u8g2_DrawCircle(u8g2, xr, yl, r, U8G2_DRAW_LOWER_RIGHT);
+ }
+
+ {
+ u8g2_uint_t ww, hh;
+
+ ww = w;
+ ww -= r;
+ ww -= r;
+ hh = h;
+ hh -= r;
+ hh -= r;
+
+ xl++;
+ yu++;
+
+ if ( ww >= 3 )
+ {
+ ww -= 2;
+ h--;
+ u8g2_DrawHLine(u8g2, xl, y, ww);
+ u8g2_DrawHLine(u8g2, xl, y+h, ww);
+ }
+
+ if ( hh >= 3 )
+ {
+ hh -= 2;
+ w--;
+ u8g2_DrawVLine(u8g2, x, yu, hh);
+ u8g2_DrawVLine(u8g2, x+w, yu, hh);
+ }
+ }
+}
+