pxt-ev3/libs/ev3/console.ts
Michał Moskal c5cec3a6ba update to pxt 5 and pxt-common-packages 6 (#934)
* bump pxt

* fix build issues

* Auto-gen of projects/summary

* removing feild editors moved to pxt

* various typing fixes

* more typing fixes

* fixing various typing issues

* Start on integration of new pxt

* serial number fixes

* gc-ify MMap object

* Re-build generated files

* fix console listeners

* clear lf() warnings

* More generated files

* also auto-generated

* Compilation fixes

* fix merge

* mostly fixing blocks

* fix sim

* fix field motors

* enable a few features

* moving to tsx

* try to fix edtiro compilation

* more defs

* removing commands

* removing extra $

* fix blockly warning

* hiding images

* enabling more pxt features

* hide images

* setup autorun

* add lock on target_reset

* update deps

* return trylock result

* updated pxt

* rename video section

* add alpha channel

* upgraded pxt

* bump pxt/version

* removed alpha ref

* var ceanup

* don't do major bump
2019-10-08 21:57:55 -07:00

61 lines
1.8 KiB
TypeScript

namespace console {
/**
* Sends the log messages to the brick screen and uses the brick up and down buttons to scroll.
*/
//% blockId=logsendtostreen block="send console to screen"
//% weight=1
//% help=console/send-to-screen
export function sendToScreen(): void {
console._screen.attach();
}
}
namespace console._screen {
const maxLines = 100;
let lines: string[];
let scrollPosition = 0;
export function attach() {
if (!lines) {
lines = [];
console.addListener(log);
brick.buttonUp.onEvent(ButtonEvent.Bumped, () => scroll(-3))
brick.buttonDown.onEvent(ButtonEvent.Bumped, () => scroll(3))
}
}
function printLog() {
brick.clearScreen()
if (!lines) return;
const screenLines = brick.lineCount();
for (let i = 0; i < screenLines; ++i) {
const line = lines[i + scrollPosition];
if (line)
screen.print(line, 0, 4 + i * brick.lineHeight(), 1, brick.font)
}
}
function scroll(pos: number) {
if (!pos) return;
scrollPosition += pos >> 0;
if (scrollPosition >= lines.length) scrollPosition = lines.length - 1;
if (scrollPosition < 0) scrollPosition = 0;
printLog();
}
function log(priority: ConsolePriority, msg: string): void {
lines.push(msg);
if (lines.length + 5 > maxLines) {
lines.splice(0, maxLines - lines.length);
scrollPosition = Math.min(scrollPosition, lines.length - 1)
}
// move down scroll once it gets large than the screen
const screenLines = brick.lineCount();
if (lines.length > screenLines
&& lines.length >= scrollPosition + screenLines) {
scrollPosition++;
}
printLog();
}
}