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openwebrx-clone
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Adding touch support for panning waterfall, etc.

This commit is contained in:
Marat Fayzullin 2022-12-11 20:12:19 -05:00
parent ac14ab6b61
commit 834cdbc75f
1 changed files with 28 additions and 0 deletions
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28
htdocs/openwebrx.js
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@ -270,6 +270,9 @@ function scale_setup() {
scale_canvas.addEventListener("mousedown", scale_canvas_mousedown, false);
scale_canvas.addEventListener("mousemove", scale_canvas_mousemove, false);
scale_canvas.addEventListener("mouseup", scale_canvas_mouseup, false);
scale_canvas.addEventListener("touchmove", process_touch, false);
scale_canvas.addEventListener("touchend", process_touch, false);
scale_canvas.addEventListener("touchstart", process_touch, false);
resize_scale();
var frequency_container = $("#openwebrx-frequency-container");
frequency_container.on("mousemove", frequency_container_mousemove, false);
@ -578,6 +581,28 @@ var canvas_drag_last_y;
var canvas_drag_start_x;
var canvas_drag_start_y;
function process_touch(evt) {
var t0 = evt.changedTouches[0];
var mouseEvt = document.createEvent("MouseEvent");
var type = "";
switch(evt.type)
{
case "touchstart": type = "mousedown"; break;
case "touchmove": type = "mousemove"; break;
case "touchend": type = "mouseup"; break;
default: return;
}
mouseEvt.initMouseEvent(type,
true, true, window, 1, t0.screenX, t0.screenY,
t0.clientX, t0.clientY, false, false, false,
false, 0/*left*/, null);
t0.target.dispatchEvent(mouseEvt);
evt.preventDefault();
}
function canvas_mousedown(evt) {
if (evt.button > 0) {
if (canvas_mouse2_down == 0)
@ -1179,6 +1204,9 @@ function init_canvas_container() {
canvas_container.addEventListener("mouseup", canvas_mouseup, false);
canvas_container.addEventListener("mousedown", canvas_mousedown, false);
canvas_container.addEventListener("wheel", canvas_mousewheel, false);
canvas_container.addEventListener("touchmove", process_touch, false);
canvas_container.addEventListener("touchend", process_touch, false);
canvas_container.addEventListener("touchstart", process_touch, false);
var frequency_container = $("#openwebrx-frequency-container");
frequency_container.on("wheel", canvas_mousewheel, false);
}