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https://git.planet-casio.com/Lephenixnoir/fxsdk.git
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9d30377d90
This commit rewrites the entire device management layer of fxlink on the libusb side, providing new abstractions that support live/async device management, including communication. This system is put to use in a new TUI interactive mode (fxlink -t) which can run in the background, connects to calculators automatically without interfering with file transfer tools, and is much more detailed in its interface than the previous interactive mode (fxlink -i). The TUI mode will also soon be extended to support sending data.
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
//---------------------------------------------------------------------------//
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// ==>/[_]\ fxlink: A community communication tool for CASIO calculators. //
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// |:::| Made by Lephe' as part of the fxSDK. //
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// \___/ License: MIT <https://opensource.org/licenses/MIT> //
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//---------------------------------------------------------------------------//
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// fxlink.tui.input: Asynchronous readline-style console input
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//
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// This header provides a basic asynchronous line edition mechanic attached to
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// an ncurses window. It might be possible to use readline directly, but this
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// is also a good exercise.
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//---
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#pragma once
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#include <fxlink/defs.h>
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#include <ncurses.h>
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/* Input field attached to a window. This object only needs to be instantiated
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once for multiple inputs. */
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struct fxlink_TUI_input {
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/* Line contents, NUL-terminated. The buffer might be larger. */
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char *data;
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/* Size of contents (not counting the NUL) */
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int size;
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/* Allocated size (always ≥ size+1) */
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int alloc_size;
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/* Cursor position within string */
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int cursor;
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/* Attached ncurses window */
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WINDOW *win;
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/* Original cursor position within window at start of input */
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uint16_t wx, wy;
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};
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//---
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// Text manipulation functions
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//---
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/* Initialize the input at least init_chars characters of content available.
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Returns false on error. Previous contents are not freed! */
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bool fxlink_TUI_input_init(struct fxlink_TUI_input *in, WINDOW *win,
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int init_chars);
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/* Clean up a line and free its contents. */
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void fxlink_TUI_input_free(struct fxlink_TUI_input *in);
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/* Realloc the line to ensure n characters plus a NUL can be written. */
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bool fxlink_TUI_input_alloc(struct fxlink_TUI_input *in, int n);
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/* Insert n characters at position p. */
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bool fxlink_TUI_input_insert(struct fxlink_TUI_input *in, int p,
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char const *str, int n);
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/* Remove n characters at position p. Returns the number of characters
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actually removed after bounds checking. */
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int fxlink_TUI_input_delete(struct fxlink_TUI_input *in, int p, int n);
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//--
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// Rendering functions
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//---
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/* Clear the input up to the original cursor position */
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void fxlink_TUI_input_clear(struct fxlink_TUI_input *in);
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/* Redraw the input (needed after non-appending edits) */
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void fxlink_TUI_input_redraw(struct fxlink_TUI_input *in);
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/* Clear the screen as with C-l */
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void fxlink_TUI_input_clearscreen(struct fxlink_TUI_input *in);
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/* getch() for an input (usually called when there *is* input */
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bool fxlink_TUI_input_getch(struct fxlink_TUI_input *in, WINDOW *logWindow);
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