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Update screen when terminal window will be changed #2

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This commit is contained in:
Aaron Fischer 2018-10-18 13:27:51 +02:00
parent 6b2c3a00a5
commit 45c0f51cb3
4 changed files with 22 additions and 4 deletions
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BIN
fn
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21
fn.c
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@ -16,6 +16,7 @@
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <signal.h>
#include "fn.h"
#include "terminal.h"
@ -847,6 +848,18 @@ void editorProcessKeypress() {
/*** init ***/
void windowResizeCallback(int signum) {
if (signum != SIGWINCH) {
return;
}
if (setWindowSize(&E.screenrows, &E.screencols) == -1) {
die("setWindowSize");
}
E.screenrows -= 2;
editorRefreshScreen();
}
void initEditor() {
E.cx = 0;
E.cy = 0;
@ -861,12 +874,14 @@ void initEditor() {
E.statusmsg_time = 0;
E.syntax = NULL;
if (getWindowSize(&E.screenrows, &E.screencols) == -1)
die("getWindowSize");
if (setWindowSize(&E.screenrows, &E.screencols) == -1) {
die("setWindowSize");
}
E.screenrows -= 2;
}
int main(int argc, char *argv[]) {
enableRawMode();
initEditor();
if (argc >= 2) {
@ -875,6 +890,8 @@ int main(int argc, char *argv[]) {
editorSetStatusMessage("HELP: Ctrl-S = save | Ctrl-Q = Quit | Ctrl-F = find");
signal(SIGWINCH, windowResizeCallback);
while (1) {
editorRefreshScreen();
editorProcessKeypress();

3
terminal.c
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@ -107,7 +107,7 @@ int getCursorPosition(int *rows, int *cols) {
return 0;
}
int getWindowSize(int *rows, int *cols) {
int setWindowSize(int *rows, int *cols) {
struct winsize ws;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
@ -123,3 +123,4 @@ int getWindowSize(int *rows, int *cols) {
return 0;
}
}

2
terminal.h
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@ -8,6 +8,6 @@ void enableRawMode();
int editorReadKey();
int getCursorPosition(int *rows, int *cols);
int getWindowSize(int *rows, int *cols);
int setWindowSize(int *rows, int *cols);
#endif