123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172 |
- /****************************************************************************
- * graphics/nxterm/nxterm_putc.c
- *
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership. The
- * ASF licenses this file to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the
- * License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/ascii.h>
- #include "nxterm.h"
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxterm_putc
- *
- * Description:
- * Render the specified character at the current display position.
- *
- ****************************************************************************/
- void nxterm_putc(FAR struct nxterm_state_s *priv, uint8_t ch)
- {
- FAR const struct nxterm_bitmap_s *bm;
- int lineheight;
- /* Ignore carriage returns */
- if (ch == '\r')
- {
- return;
- }
- /* Handle backspace (treating both BS and DEL as backspace) */
- if (ch == ASCII_BS || ch == ASCII_DEL)
- {
- nxterm_backspace(priv);
- return;
- }
- /* Will another character fit on this line? */
- if (priv->fpos.x + priv->fwidth > priv->wndo.wsize.w)
- {
- #ifndef CONFIG_NXTERM_NOWRAP
- /* No.. move to the next line */
- nxterm_newline(priv);
- /* If we were about to output a newline character, then don't */
- if (ch == '\n')
- {
- return;
- }
- #else
- /* No.. Ignore all further characters until a newline is encountered */
- if (ch != '\n')
- {
- return;
- }
- #endif
- }
- /* If it is a newline character, then just perform the logical newline
- * operation.
- */
- if (ch == '\n')
- {
- nxterm_newline(priv);
- return;
- }
- /* Check if we need to scroll up */
- lineheight = (priv->fheight + CONFIG_NXTERM_LINESEPARATION);
- while (priv->fpos.y >= priv->wndo.wsize.h - lineheight)
- {
- nxterm_scroll(priv, lineheight);
- }
- /* Find the glyph associated with the character and render it onto the
- * display.
- */
- bm = nxterm_addchar(priv, ch);
- if (bm)
- {
- nxterm_fillchar(priv, NULL, bm);
- }
- }
- /****************************************************************************
- * Name: nxterm_showcursor
- *
- * Description:
- * Render the cursor character at the current display position.
- *
- ****************************************************************************/
- void nxterm_showcursor(FAR struct nxterm_state_s *priv)
- {
- int lineheight;
- /* Will another character fit on this line? */
- if (priv->fpos.x + priv->fwidth > priv->wndo.wsize.w)
- {
- #ifndef CONFIG_NXTERM_NOWRAP
- /* No.. move to the next line */
- nxterm_newline(priv);
- #else
- return;
- #endif
- }
- /* Check if we need to scroll up */
- lineheight = (priv->fheight + CONFIG_NXTERM_LINESEPARATION);
- while (priv->fpos.y >= priv->wndo.wsize.h - lineheight)
- {
- nxterm_scroll(priv, lineheight);
- }
- /* Render the cursor glyph onto the display. */
- priv->cursor.pos.x = priv->fpos.x;
- priv->cursor.pos.y = priv->fpos.y;
- nxterm_fillchar(priv, NULL, &priv->cursor);
- }
- /****************************************************************************
- * Name: nxterm_hidecursor
- *
- * Description:
- * Render the cursor cursor character from the display.
- *
- ****************************************************************************/
- void nxterm_hidecursor(FAR struct nxterm_state_s *priv)
- {
- nxterm_hidechar(priv, &priv->cursor);
- }
|