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js: Cancel UI events when the mid end says they've been handled

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This means that if a key doesn't do anything in a puzzle, it can operate
the browser instead.
This commit is contained in:
Ben Harris
2022-11-05 17:15:52 +00:00
parent 4a37f7cf78
commit c5a2446fae
2 changed files with 27 additions and 14 deletions
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15
emccpre.js
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@ -254,7 +254,7 @@ function initPuzzle() {
// Set up mouse handlers. We do a bit of tracking of the currently
// pressed mouse buttons, to avoid sending mousemoves with no
// button down (our puzzles don't want those events).
mousedown = Module.cwrap('mousedown', 'void',
mousedown = Module.cwrap('mousedown', 'boolean',
['number', 'number', 'number']);
button_phys2log = [null, null, null];
@ -277,21 +277,23 @@ function initPuzzle() {
else if (event.ctrlKey)
logbutton = 2; // Ctrl-click overrides to right button
mousedown(xy.x, xy.y, logbutton);
if (mousedown(xy.x, xy.y, logbutton))
event.preventDefault();
button_phys2log[event.button] = logbutton;
onscreen_canvas.setCapture(true);
};
mousemove = Module.cwrap('mousemove', 'void',
mousemove = Module.cwrap('mousemove', 'boolean',
['number', 'number', 'number']);
onscreen_canvas.onmousemove = function(event) {
var down = buttons_down();
if (down) {
var xy = canvas_mouse_coords(event, onscreen_canvas);
mousemove(xy.x, xy.y, down);
if (mousemove(xy.x, xy.y, down))
event.preventDefault();
}
};
mouseup = Module.cwrap('mouseup', 'void',
mouseup = Module.cwrap('mouseup', 'boolean',
['number', 'number', 'number']);
onscreen_canvas.onmouseup = function(event) {
if (event.button >= 3)
@ -299,7 +301,8 @@ function initPuzzle() {
if (button_phys2log[event.button] !== null) {
var xy = canvas_mouse_coords(event, onscreen_canvas);
mouseup(xy.x, xy.y, button_phys2log[event.button]);
if (mouseup(xy.x, xy.y, button_phys2log[event.button]))
event.preventDefault();
button_phys2log[event.button] = null;
}
};