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Allow users to enable terminal cursor blinking with termux.properties

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This `terminal-cursor-blink-rate` key can be used to enable terminal cursor blinking. The user can set an int value between `100` and `2000` which will be used as blink rate in millisecond. The default value is `0`, which disables cursor blinking. So adding an entry like `terminal-cursor-blink-rate=600` to `~/termux.properties` file will make the cursor attempt to blink every 600ms. Running `termux-reload-settings` command will also update the cursor blinking rate instantaneously if changed.

A background thread is used to control the blinking by toggling the cursor visibility and then invalidating the view every x milliseconds set. This will have a performance impact, so use wisely and at your own risk.

If the cursor itself is disabled, which is controlled by whether DECSET_BIT_CURSOR_ENABLED (DECSET 25, DECTCEM), then blinking will be automatically disabled. You can enable the cursor with `tput cnorm` or `echo -e '\e[?25h'` and disable it with `tput civis` or `echo -e '\e[?25l'`.

Note that you can also change the cursor color by adding `cursor` property to `~/colors.properties` file, like `cursor=#FFFFFF` for a white cursor.

The `TermuxPropertyConstants` class has been updated to `v0.9.0`. Check its Changelog sections for info on changes.

Closes #153
This commit is contained in:
agnostic-apollo
2021-05-15 16:35:54 +05:00
parent 11f5c0afd1
commit 31298b8857
11 changed files with 254 additions and 24 deletions
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24
terminal-emulator/src/test/java/com/termux/terminal/DecSetTest.java
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@@ -16,23 +16,23 @@ package com.termux.terminal;
public class DecSetTest extends TerminalTestCase {
/** DECSET 25, DECTCEM, controls visibility of the cursor. */
public void testShowHideCursor() {
public void testEnableDisableCursor() {
withTerminalSized(3, 3);
assertTrue("Initially the cursor should be visible", mTerminal.isShowingCursor());
enterString("\033[?25l"); // Hide Cursor (DECTCEM).
assertFalse(mTerminal.isShowingCursor());
enterString("\033[?25h"); // Show Cursor (DECTCEM).
assertTrue(mTerminal.isShowingCursor());
assertTrue("Initially the cursor should be enabled", mTerminal.isCursorEnabled());
enterString("\033[?25l"); // Disable Cursor (DECTCEM).
assertFalse(mTerminal.isCursorEnabled());
enterString("\033[?25h"); // Enable Cursor (DECTCEM).
assertTrue(mTerminal.isCursorEnabled());
enterString("\033[?25l"); // Hide Cursor (DECTCEM), again.
assertFalse(mTerminal.isShowingCursor());
enterString("\033[?25l"); // Disable Cursor (DECTCEM), again.
assertFalse(mTerminal.isCursorEnabled());
mTerminal.reset();
assertTrue("Resetting the terminal should show the cursor", mTerminal.isShowingCursor());
assertTrue("Resetting the terminal should enable the cursor", mTerminal.isCursorEnabled());
enterString("\033[?25l");
assertFalse(mTerminal.isShowingCursor());
enterString("\033c"); // RIS resetting should reveal cursor.
assertTrue(mTerminal.isShowingCursor());
assertFalse(mTerminal.isCursorEnabled());
enterString("\033c"); // RIS resetting should enabled cursor.
assertTrue(mTerminal.isCursorEnabled());
}
/** DECSET 2004, controls bracketed paste mode. */