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Javascript frontend: make Shift- and Ctrl-click work.

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In other front ends, Shift-click is an alternative to the middle
button, and Ctrl-click the right button. Apparently I completely
forgot to implement this in the JS front end. Better late than never.
This commit is contained in:
Simon Tatham
2019-04-12 23:38:42 +01:00
parent 7ac48f9fe3
commit 866354ef62
1 changed files with 31 additions and 8 deletions
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39
emccpre.js
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@ -212,28 +212,51 @@ function initPuzzle() {
// button down (our puzzles don't want those events).
mousedown = Module.cwrap('mousedown', 'void',
['number', 'number', 'number']);
buttons_down = 0;
button_phys2log = [null, null, null];
buttons_down = function() {
var i, toret = 0;
for (i = 0; i < 3; i++)
if (button_phys2log[i] !== null)
toret |= 1 << button_phys2log[i];
return toret;
};
onscreen_canvas.onmousedown = function(event) {
if (event.button >= 3)
return;
var xy = relative_mouse_coords(event, onscreen_canvas);
mousedown(xy.x, xy.y, event.button);
buttons_down |= 1 << event.button;
var logbutton = event.button;
if (event.shiftKey)
logbutton = 1; // Shift-click overrides to middle button
else if (event.ctrlKey)
logbutton = 2; // Ctrl-click overrides to right button
mousedown(xy.x, xy.y, logbutton);
button_phys2log[event.button] = logbutton;
onscreen_canvas.setCapture(true);
};
mousemove = Module.cwrap('mousemove', 'void',
['number', 'number', 'number']);
onscreen_canvas.onmousemove = function(event) {
if (buttons_down) {
var down = buttons_down();
if (down) {
var xy = relative_mouse_coords(event, onscreen_canvas);
mousemove(xy.x, xy.y, buttons_down);
mousemove(xy.x, xy.y, down);
}
};
mouseup = Module.cwrap('mouseup', 'void',
['number', 'number', 'number']);
onscreen_canvas.onmouseup = function(event) {
if (buttons_down & (1 << event.button)) {
buttons_down ^= 1 << event.button;
if (event.button >= 3)
return;
if (button_phys2log[event.button] !== null) {
var xy = relative_mouse_coords(event, onscreen_canvas);
mouseup(xy.x, xy.y, event.button);
mouseup(xy.x, xy.y, button_phys2log[event.button]);
button_phys2log[event.button] = null;
}
};