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Fix keyboard focus lock-out with HTML5 canvas in iframe

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(cherry picked from commit 9080e96bc8)
This commit is contained in:
Leon Krause 2018-05-09 15:57:10 +02:00 committed by Hein-Pieter van Braam
parent 10c12b37ec
commit 868c44b239
3 changed files with 10 additions and 6 deletions
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2
misc/dist/html/default.html vendored
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@ -195,7 +195,7 @@ $GODOT_HEAD_INCLUDE
</head>
<body>
<div id="container">
<canvas id="canvas" oncontextmenu="event.preventDefault();" width="640" height="480">
<canvas id="canvas" width="640" height="480">
HTML5 canvas appears to be unsupported in the current browser.<br />
Please try updating or use a different browser.
</canvas>

4
platform/javascript/engine.js
View file

@ -173,6 +173,10 @@
actualCanvas.style.padding = 0;
actualCanvas.style.borderWidth = 0;
actualCanvas.style.borderStyle = 'none';
// disable right-click context menu
actualCanvas.addEventListener('contextmenu', function(ev) {
ev.preventDefault();
}, false);
// until context restoration is implemented
actualCanvas.addEventListener('webglcontextlost', function(ev) {
alert("WebGL context lost, please reload the page");

10
platform/javascript/os_javascript.cpp
View file

@ -159,10 +159,9 @@ static EM_BOOL _mousebutton_callback(int event_type, const EmscriptenMouseEvent
int mask = _input->get_mouse_button_mask();
int button_flag = 1 << (ev->get_button_index() - 1);
if (ev->is_pressed()) {
// since the event is consumed, focus manually
if (!is_canvas_focused()) {
focus_canvas();
}
// Since the event is consumed, focus manually. The containing iframe,
// if used, may not have focus yet, so focus even if already focused.
focus_canvas();
mask |= button_flag;
} else if (mask & button_flag) {
mask &= ~button_flag;
@ -173,7 +172,8 @@ static EM_BOOL _mousebutton_callback(int event_type, const EmscriptenMouseEvent
ev->set_button_mask(mask);
_input->parse_input_event(ev);
// prevent selection dragging
// Prevent multi-click text selection and wheel-click scrolling anchor.
// Context menu is prevented through contextmenu event.
return true;
}