100 lines
3 KiB
C
100 lines
3 KiB
C
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u8g_cursor.c
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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_SetCursorFont(u8g_t *u8g, const u8g_pgm_uint8_t *cursor_font)
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{
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u8g->cursor_font = cursor_font;
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}
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void u8g_SetCursorStyle(u8g_t *u8g, uint8_t encoding)
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{
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u8g->cursor_encoding = encoding;
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}
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void u8g_SetCursorColor(u8g_t *u8g, uint8_t fg, uint8_t bg)
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{
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u8g->cursor_bg_color = bg;
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u8g->cursor_fg_color = fg;
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}
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void u8g_SetCursorPos(u8g_t *u8g, u8g_uint_t cursor_x, u8g_uint_t cursor_y)
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{
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u8g->cursor_x = cursor_x;
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u8g->cursor_y = cursor_y;
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}
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void u8g_EnableCursor(u8g_t *u8g)
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{
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u8g->cursor_fn = u8g_DrawCursor;
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}
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void u8g_DisableCursor(u8g_t *u8g)
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{
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u8g->cursor_fn = (u8g_draw_cursor_fn)0;
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}
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void u8g_DrawCursor(u8g_t *u8g)
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{
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const u8g_pgm_uint8_t *font;
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uint8_t color;
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uint8_t encoding = u8g->cursor_encoding;
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/* get current values */
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color = u8g_GetColorIndex(u8g);
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font = u8g->font;
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/* draw cursor */
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u8g->font = u8g->cursor_font;
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encoding++;
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u8g_SetColorIndex(u8g, u8g->cursor_bg_color);
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/* 27. Jan 2013: replaced call to u8g_DrawGlyph with call to u8g_draw_glyph */
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/* required, because y adjustment should not happen to the cursor fonts */
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u8g_draw_glyph(u8g, u8g->cursor_x, u8g->cursor_y, encoding);
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encoding--;
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u8g_SetColorIndex(u8g, u8g->cursor_fg_color);
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/* 27. Jan 2013: replaced call to u8g_DrawGlyph with call to u8g_draw_glyph */
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/* required, because y adjustment should not happen to the cursor fonts */
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/* u8g_DrawGlyph(u8g, u8g->cursor_x, u8g->cursor_y, encoding); */
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u8g_draw_glyph(u8g, u8g->cursor_x, u8g->cursor_y, encoding);
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/* restore previous values */
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u8g->font = font;
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u8g_SetColorIndex(u8g, color);
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}
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