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233 lines
5.0 KiB
C
233 lines
5.0 KiB
C
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/*
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u8g_rect.c
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U8G high level interface for horizontal and vertical things
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Universal 8bit Graphics Library
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Copyright (c) 2011, 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 "u8g.h"
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void u8g_draw_hline(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w)
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{
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uint8_t pixel = 0x0ff;
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while( w >= 8 )
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{
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u8g_Draw8Pixel(u8g, x, y, 0, pixel);
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w-=8;
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x+=8;
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}
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if ( w != 0 )
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{
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w ^=7;
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w++;
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pixel <<= w&7;
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u8g_Draw8Pixel(u8g, x, y, 0, pixel);
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}
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}
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void u8g_draw_vline(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t h)
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{
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uint8_t pixel = 0x0ff;
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while( h >= 8 )
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{
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u8g_Draw8Pixel(u8g, x, y, 1, pixel);
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h-=8;
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y+=8;
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}
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if ( h != 0 )
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{
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h ^=7;
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h++;
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pixel <<= h&7;
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u8g_Draw8Pixel(u8g, x, y, 1, pixel);
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}
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}
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void u8g_DrawHLine(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w)
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{
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if ( u8g_IsBBXIntersection(u8g, x, y, w, 1) == 0 )
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return;
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u8g_draw_hline(u8g, x, y, w);
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}
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void u8g_DrawVLine(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w)
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{
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if ( u8g_IsBBXIntersection(u8g, x, y, 1, w) == 0 )
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return;
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u8g_draw_vline(u8g, x, y, w);
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}
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/* restrictions: w > 0 && h > 0 */
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void u8g_DrawFrame(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
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{
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u8g_uint_t xtmp = x;
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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u8g_draw_hline(u8g, x, y, w);
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u8g_draw_vline(u8g, x, y, h);
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x+=w;
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x--;
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u8g_draw_vline(u8g, x, y, h);
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y+=h;
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y--;
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u8g_draw_hline(u8g, xtmp, y, w);
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}
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void u8g_draw_box(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
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{
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do
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{
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u8g_draw_hline(u8g, x, y, w);
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y++;
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h--;
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} while( h != 0 );
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}
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/* restrictions: h > 0 */
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void u8g_DrawBox(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h)
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{
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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u8g_draw_box(u8g, x, y, w, h);
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}
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void u8g_DrawRFrame(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, u8g_uint_t r)
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{
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u8g_uint_t xl, yu;
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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xl = x;
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xl += r;
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yu = y;
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yu += r;
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{
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u8g_uint_t yl, xr;
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xr = x;
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xr += w;
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xr -= r;
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xr -= 1;
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yl = y;
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yl += h;
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yl -= r;
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yl -= 1;
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u8g_draw_circle(u8g, xl, yu, r, U8G_DRAW_UPPER_LEFT);
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u8g_draw_circle(u8g, xr, yu, r, U8G_DRAW_UPPER_RIGHT);
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u8g_draw_circle(u8g, xl, yl, r, U8G_DRAW_LOWER_LEFT);
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u8g_draw_circle(u8g, xr, yl, r, U8G_DRAW_LOWER_RIGHT);
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}
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{
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u8g_uint_t ww, hh;
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ww = w;
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ww -= r;
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ww -= r;
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ww -= 2;
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hh = h;
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hh -= r;
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hh -= r;
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hh -= 2;
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xl++;
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yu++;
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h--;
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w--;
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u8g_draw_hline(u8g, xl, y, ww);
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u8g_draw_hline(u8g, xl, y+h, ww);
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u8g_draw_vline(u8g, x, yu, hh);
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u8g_draw_vline(u8g, x+w, yu, hh);
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}
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}
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void u8g_DrawRBox(u8g_t *u8g, u8g_uint_t x, u8g_uint_t y, u8g_uint_t w, u8g_uint_t h, u8g_uint_t r)
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{
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u8g_uint_t xl, yu;
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u8g_uint_t yl, xr;
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if ( u8g_IsBBXIntersection(u8g, x, y, w, h) == 0 )
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return;
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xl = x;
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xl += r;
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yu = y;
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yu += r;
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xr = x;
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xr += w;
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xr -= r;
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xr -= 1;
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yl = y;
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yl += h;
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yl -= r;
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yl -= 1;
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u8g_draw_disc(u8g, xl, yu, r, U8G_DRAW_UPPER_LEFT);
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u8g_draw_disc(u8g, xr, yu, r, U8G_DRAW_UPPER_RIGHT);
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u8g_draw_disc(u8g, xl, yl, r, U8G_DRAW_LOWER_LEFT);
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u8g_draw_disc(u8g, xr, yl, r, U8G_DRAW_LOWER_RIGHT);
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{
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u8g_uint_t ww, hh;
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ww = w;
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ww -= r;
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ww -= r;
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ww -= 2;
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hh = h;
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hh -= r;
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hh -= r;
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hh -= 2;
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xl++;
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yu++;
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h--;
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u8g_draw_box(u8g, xl, y, ww, r+1);
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u8g_draw_box(u8g, xl, yl, ww, r+1);
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//u8g_draw_hline(u8g, xl, y+h, ww);
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u8g_draw_box(u8g, x, yu, w, hh);
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//u8g_draw_vline(u8g, x+w, yu, hh);
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}
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}
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