Rework of #39 (#40)

* Rework of #39 patch from @arykov (thanks)

* styled resize corner

* fixed squashing of resizaable window on moving

* keep window size and opsition after full screen

* not necessary

* attempt to fix desktop overflow

* improved

* ios fixes

* refactoring

9 files changed, 224 insertions, 80 deletions

diff --git a/web/share/css/kvm/stream.css b/web/share/css/kvm/stream.css
index 189867a7..cd202eea 100644
--- a/web/share/css/kvm/stream.css
+++ b/web/share/css/kvm/stream.css
@@ -20,11 +20,19 @@
 *****************************************************************************/
 
 
+div#stream-window {
+	min-width: 400px;
+	min-height: 200px;
+}
+
 div#stream-info {
 	display: none;
 }
 
 div#stream-box {
+	width: 100%;
+	height: 100%;
+	object-fit: contain;
 	position: relative;
 	display: inline-block;
 	border: var(--border-window-thin);
@@ -45,8 +53,9 @@ div.stream-box-mouse-enabled {
 }
 
 img#stream-image {
-	width: 640px;
-	height: 480px;
+	width: 100%;
+	height: 100%;
+	object-fit: contain;
 	display: block;
 	background-color: black;
 }
@@ -69,9 +78,12 @@ div#stream-mouse-buttons {
 	div#stream-window {
 		padding-top: 3px !important;
 		border-top: 0 !important;
-		border-radius: 0 0 8px 8px !important;
+		border-left: 0 !important;
+		border-right: 0 !important;
+		border-radius: 0 !important;
 		top: 50px !important;
 		left: 50% !important;
+		width: 100% !important;
 		-webkit-transform: translateX(-50%) !important;
 		transform: translateX(-50%) !important;
 	}
diff --git a/web/share/css/vars.css b/web/share/css/vars.css
index bec1f10e..f49f40cc 100644
--- a/web/share/css/vars.css
+++ b/web/share/css/vars.css
@@ -66,6 +66,8 @@
 	--cs-key-pressed-fg: #6c7481;
 	--cs-key-holded-bg: #436a8a;
 
+	--cs-corner-bg: #5b90bb;
+
 	--shadow-micro: 1px 2px 4px 0 rgba(0, 0, 0, 0.4);
 	--shadow-small: 0 2px 4px 0 rgba(0, 0, 0, 0.2);
 	--shadow-big: 0 8px 16px 0 rgba(0, 0, 0, 0.4);
diff --git a/web/share/css/window.css b/web/share/css/window.css
index 3af2eb0c..e50db8ba 100644
--- a/web/share/css/window.css
+++ b/web/share/css/window.css
@@ -34,9 +34,31 @@ div.window {
 	background-color: var(--cs-window-default-bg);
 	padding: 30px 9px 9px 9px;
 }
+div.window-resizable {
+	resize: both;
+}
 div.window-active {
 	border: var(--border-intensive-2px) !important;
 }
+div.window-resizable.window-active::-webkit-resizer {
+	width: 0;
+	height: 0;
+	border-style: solid;
+	border-width: 0 0 20px 20px;
+	border-color: transparent transparent var(--cs-corner-bg) transparent;
+	/* border-bottom-right-radius: 8px; */
+	/* Size does not work */
+	display:block;
+	width: 20px !important;
+	height: 20px !important;
+}
+div.window-full-screen {
+	position: absolute;
+	top: 0;
+	left: 0;
+	width: 100%;
+	height: 100%;
+}
 
 div.window div.window-header {
 	overflow: hidden;
@@ -68,17 +90,43 @@ div.window div.window-header-grabbed {
 	border-bottom: var(--border-intensive-thin);
 }
 
+div.window div.window-header button.window-button-full-screen,
+div.window div.window-header button.window-button-maximize,
 div.window div.window-header button.window-button-close {
 	border: none;
 	position: absolute;
 	top: -2px;
-	right: -6px;
 	width: 44px;
 	height: 24px;
 	padding-left: 0;
+	padding-right: 0;
 	color: var(--cs-window-closer-default-fg);
 	display: inline-block;
 }
+div.window div.window-header button.window-button-full-screen {
+	right: 90px;
+}
+div.window div.window-header button.window-button-close {
+	right: 0px;
+}
+div.window div.window-header button.window-button-maximize {
+	right: 45px;
+}
+
+div.window div.window-lock-alert {
+	white-space: normal;
+	text-align: justify;
+	border: var(--border-window-thin);
+	border-radius: 8px;
+	box-sizing: border-box;
+	padding: 5px 5px 5px 5px;
+	background-color: var(--cs-window-default-bg);
+	position: fixed;
+	top: 50%;
+	left: 50%;
+	transform: translate(-50%, -50%);
+	z-index: 10000;
+}
 
 @media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
 	/* iPad */
@@ -91,6 +139,7 @@ div.window div.window-header button.window-button-close {
 	div.window div.window-header div.window-grab {
 		height: 35px !important;
 	}
+	div.window div.window-header button.window-button-full-screen,
 	div.window div.window-header button.window-button-close {
 		height: 40px !important;
 	}
diff --git a/web/share/js/keypad.js b/web/share/js/keypad.js
index 554e43cf..23ed0620 100644
--- a/web/share/js/keypad.js
+++ b/web/share/js/keypad.js
@@ -138,7 +138,7 @@ export function Keypad(keys_parent, key_callback) {
 	var __isPressed = function(el_key) {
 		let is_pressed = false;
 		let el_keys = __resolveKeys(el_key);
-		for (let el_key of el_keys) {
+		for (el_key of el_keys) {
 			is_pressed = (is_pressed || el_key.classList.contains("pressed"));
 		}
 		return is_pressed;
@@ -147,7 +147,7 @@ export function Keypad(keys_parent, key_callback) {
 	var __isHolded = function(el_key) {
 		let is_holded = false;
 		let el_keys = __resolveKeys(el_key);
-		for (let el_key of el_keys) {
+		for (el_key of el_keys) {
 			is_holded = (is_holded || el_key.classList.contains("holded"));
 		}
 		return is_holded;
@@ -156,7 +156,7 @@ export function Keypad(keys_parent, key_callback) {
 	var __isActive = function(el_key) {
 		let is_active = false;
 		let el_keys = __resolveKeys(el_key);
-		for (let el_key of el_keys) {
+		for (el_key of el_keys) {
 			is_active = (is_active || el_key.classList.contains("pressed") || el_key.classList.contains("holded"));
 		}
 		return is_active;
@@ -164,14 +164,14 @@ export function Keypad(keys_parent, key_callback) {
 
 	var __activate = function(el_key, cls) {
 		let el_keys = __resolveKeys(el_key);
-		for (let el_key of el_keys) {
+		for (el_key of el_keys) {
 			el_key.classList.add(cls);
 		}
 	};
 
 	var __deactivate = function(el_key) {
 		let el_keys = __resolveKeys(el_key);
-		for (let el_key of el_keys) {
+		for (el_key of el_keys) {
 			el_key.classList.remove("pressed");
 			el_key.classList.remove("holded");
 		}
diff --git a/web/share/js/kvm/mouse.js b/web/share/js/kvm/mouse.js
index 3ac7935e..2893a5ae 100644
--- a/web/share/js/kvm/mouse.js
+++ b/web/share/js/kvm/mouse.js
@@ -40,8 +40,8 @@ export function Mouse(record_callback) {
 
 	var __keypad = null;
 
-	var __current_pos = {x: 0, y:0};
-	var __sent_pos = {x: 0, y:0};
+	var __current_pos = {x: 0, y: 0};
+	var __sent_pos = {x: 0, y: 0};
 	var __wheel_delta = {x: 0, y: 0};
 	var __relative_deltas = [];
 
@@ -210,15 +210,16 @@ export function Mouse(record_callback) {
 		if (__absolute) {
 			let pos = __current_pos;
 			if (pos.x !== __sent_pos.x || pos.y !== __sent_pos.y) {
-				let el_stream_image = $("stream-image");
-				let to = {
-					x: __translate(pos.x, 0, el_stream_image.clientWidth, -32768, 32767),
-					y: __translate(pos.y, 0, el_stream_image.clientHeight, -32768, 32767),
-				};
-
-				tools.debug("Mouse: moved:", to);
-				__sendEvent("mouse_move", {"to": to});
-				__sent_pos = pos;
+				let geometry = $("stream-box").stream_geometry;
+				if (geometry) {
+					let to = {
+						x: __translate(pos.x, geometry.x, geometry.width, -32768, 32767),
+						y: __translate(pos.y, geometry.y, geometry.height, -32768, 32767),
+					};
+					tools.debug("Mouse: moved:", to);
+					__sendEvent("mouse_move", {"to": to});
+					__sent_pos = pos;
+				}
 			}
 		} else if (__relative_deltas.length) {
 			tools.debug("Mouse: relative:", __relative_deltas);
@@ -228,7 +229,13 @@ export function Mouse(record_callback) {
 	};
 
 	var __translate = function(x, a, b, c, d) {
-		return Math.round((x - a) / (b - a) * (d - c) + c);
+		let translated = Math.round((x - a) / b * (d - c) + c);
+		if (translated < c) {
+			return c;
+		} else if (translated > d) {
+			return d;
+		}
+		return translated;
 	};
 
 	var __streamWheelHandler = function(event) {
diff --git a/web/share/js/kvm/session.js b/web/share/js/kvm/session.js
index 2e4c4f6d..5aa0a6a0 100644
--- a/web/share/js/kvm/session.js
+++ b/web/share/js/kvm/session.js
@@ -47,7 +47,7 @@ export function Session() {
 	var __hid = new Hid();
 	var __atx = new Atx();
 	var __msd = new Msd();
-	var __streamer = new Streamer();
+	var __streamer = new Streamer(__hid);
 	var __wol = new WakeOnLan();
 	var __gpio = new Gpio();
 
diff --git a/web/share/js/kvm/stream.js b/web/share/js/kvm/stream.js
index 83e3c4d4..2db37608 100644
--- a/web/share/js/kvm/stream.js
+++ b/web/share/js/kvm/stream.js
@@ -34,8 +34,6 @@ export function Streamer() {
 
 	var __resolution = {width: 640, height: 480};
 
-	var __size_factor = 1;
-
 	var __mjpeg_key = tools.makeId();
 	var __mjpeg_id = "";
 	var __mjpeg_fps = -1;
@@ -53,10 +51,6 @@ export function Streamer() {
 
 		$("stream-resolution-selector").onchange = (() => __sendParam("resolution", $("stream-resolution-selector").value));
 
-		tools.sliderSetParams($("stream-size-slider"), 20, 200, 5, 100);
-		$("stream-size-slider").oninput = () => __resize();
-		$("stream-size-slider").onchange = () => __resize();
-
 		tools.setOnClick($("stream-screenshot-button"), __clickScreenshotButton);
 		tools.setOnClick($("stream-reset-button"), __clickResetButton);
 
@@ -65,6 +59,7 @@ export function Streamer() {
 				self.setState(__state_for_invisible);
 			}
 		};
+		$("stream-window").resize_hook = __resizeHook;
 	};
 
 	/************************************************************************/
@@ -88,6 +83,11 @@ export function Streamer() {
 		}
 
 		if (state && state.streamer) {
+			if (!window.ResizeObserver) {
+				// Browsers that don't support this API(on lower versions of iOS for example)
+				__resizeHook();
+			}
+
 			if (!$("stream-quality-slider").activated) {
 				wm.setElementEnabled($("stream-quality-slider"), true);
 				if ($("stream-quality-slider").value !== state.streamer.encoder.quality) {
@@ -107,13 +107,8 @@ export function Streamer() {
 			}
 
 			let resolution_str = __makeStringResolution(state.streamer.source.resolution);
-			if (__makeStringResolution(__resolution) != resolution_str) {
+			if (__makeStringResolution(__resolution) !== resolution_str) {
 				__resolution = state.streamer.source.resolution;
-				if ($("stream-auto-resize-switch").checked) {
-					__adjustSizeFactor();
-				} else {
-					__applySizeFactor();
-				}
 			}
 
 			if (state.features.resolution) {
@@ -260,40 +255,17 @@ export function Streamer() {
 		});
 	};
 
-	var __resize = function() {
-		let size = $("stream-size-slider").value;
-		$("stream-size-value").innerHTML = `${size}%`;
-		__size_factor = size / 100;
-		__applySizeFactor();
-	};
-
-	var __adjustSizeFactor = function() {
-		let el_window = $("stream-window");
-		let el_slider = $("stream-size-slider");
-		let view = wm.getViewGeometry();
-
-		for (let size = 100; size >= el_slider.min; size -= el_slider.step) {
-			tools.info("Stream: adjusting size:", size);
-			$("stream-size-slider").value = size;
-			__resize();
-
-			let rect = el_window.getBoundingClientRect();
-			if (
-				rect.bottom <= view.bottom
-				&& rect.top >= view.top
-				&& rect.left >= view.left
-				&& rect.right <= view.right
-			) {
-				break;
-			}
-		}
-	};
-
-	var __applySizeFactor = function() {
-		let el = $("stream-image");
-		el.style.width = __resolution.width * __size_factor + "px";
-		el.style.height = __resolution.height * __size_factor + "px";
-		wm.showWindow($("stream-window"), false);
+	var __resizeHook = function() {
+		let rect = $("stream-image").getBoundingClientRect();
+		let width = $("stream-image").naturalWidth;
+		let height = $("stream-image").naturalHeight;
+		let ratio = Math.min(rect.width / width, rect.height / height);
+		$("stream-box").stream_geometry = {
+			"x": Math.round((rect.width - ratio * width) / 2),
+			"y": Math.round((rect.height - ratio * height) / 2),
+			"width": Math.round(ratio * width),
+			"height": Math.round(ratio * height),
+		};
 	};
 
 	var __makeStringResolution = function(resolution) {
diff --git a/web/share/js/tools.js b/web/share/js/tools.js
index d6965803..521cb1a0 100644
--- a/web/share/js/tools.js
+++ b/web/share/js/tools.js
@@ -243,5 +243,5 @@ export var tools = new function() {
 };
 
 export var $ = (id) => document.getElementById(id);
-export var $$ = (cls) => document.getElementsByClassName(cls);
+export var $$ = (cls) => [].slice.call(document.getElementsByClassName(cls));
 export var $$$ = (selector) => document.querySelectorAll(selector);
diff --git a/web/share/js/wm.js b/web/share/js/wm.js
index f879e3e8..49e79ecb 100644
--- a/web/share/js/wm.js
+++ b/web/share/js/wm.js
@@ -54,14 +54,37 @@ function __WindowManager() {
 			__menu_buttons.push(el_button);
 		}
 
+		if (!window.ResizeObserver) {
+			tools.error("ResizeObserver not supported");
+		}
+
 		for (let el_window of $$("window")) {
 			el_window.setAttribute("tabindex", "-1");
 			__makeWindowMovable(el_window);
 			__windows.push(el_window);
 
-			let el_button = el_window.querySelector(".window-header .window-button-close");
-			if (el_button) {
-				tools.setOnClick(el_button, function() {
+			if (el_window.classList.contains("window-resizable") && window.ResizeObserver) {
+				new ResizeObserver(function() {
+					// При переполнении рабочей области сократить размер окна по высоте.
+					// По ширине оно настраивается само в CSS.
+					let view = self.getViewGeometry();
+					let rect = el_window.getBoundingClientRect();
+					if ((rect.bottom - rect.top) > (view.bottom - view.top)) {
+						el_window.style.height = view.bottom - view.top + "px";
+					}
+
+					if (el_window.hasAttribute("data-centered")) {
+						__centerWindow(el_window);
+					}
+					if (el_window.resize_hook) {
+						el_window.resize_hook();
+					}
+				}).observe(el_window);
+			}
+
+			let el_close_button = el_window.querySelector(".window-header .window-button-close");
+			if (el_close_button) {
+				tools.setOnClick(el_close_button, function() {
 					let close_window = function() {
 						__closeWindow(el_window);
 						__activateLastWindow(el_window);
@@ -78,6 +101,22 @@ function __WindowManager() {
 					}
 				});
 			}
+
+			let el_maximize_button = el_window.querySelector(".window-header .window-button-maximize");
+			if (el_maximize_button) {
+				tools.setOnClick(el_maximize_button, function() {
+					__maximizeWindow(el_window);
+					__activateLastWindow(el_window);
+				});
+			}
+
+			let el_full_screen_button = el_window.querySelector(".window-header .window-button-full-screen");
+			if (el_full_screen_button) {
+				tools.setOnClick(el_full_screen_button, function() {
+					__fullScreenWindow(el_window);
+					__activateLastWindow(el_window);
+				});
+			}
 		}
 
 		window.onmouseup = __globalMouseButtonHandler;
@@ -86,8 +125,10 @@ function __WindowManager() {
 		window.addEventListener("focusin", __focusIn);
 		window.addEventListener("focusout", __focusOut);
 
-		window.addEventListener("resize", __organizeWindowsOnResize);
-		window.addEventListener("orientationchange", __organizeWindowsOnResize);
+		window.addEventListener("resize", __organizeWindowsOnBrowserResize);
+		window.addEventListener("orientationchange", __organizeWindowsOnBrowserResize);
+
+		document.onfullscreenchange = __onFullScreenChange;
 	};
 
 	/************************************************************************/
@@ -205,7 +246,7 @@ function __WindowManager() {
 		if (activate) {
 			__activateWindow(el_window);
 		}
-		if (Object.prototype.hasOwnProperty.call(el_window, "show_hook")) {
+		if (el_window.show_hook) {
 			if (showed) {
 				el_window.show_hook();
 			}
@@ -239,7 +280,7 @@ function __WindowManager() {
 			let el_menu = el_button.parentElement.querySelector(".menu");
 			if (el_button === el_a && window.getComputedStyle(el_menu, null).visibility === "hidden") {
 				let rect = el_menu.getBoundingClientRect();
-				let offset = self.getViewGeometry().right - (rect.x + el_menu.clientWidth + 2); // + 2 is ugly hack
+				let offset = self.getViewGeometry().right - (rect.left + el_menu.clientWidth + 2); // + 2 is ugly hack
 				if (offset < 0) {
 					el_menu.style.right = "0px";
 				} else {
@@ -319,7 +360,7 @@ function __WindowManager() {
 		}
 	};
 
-	var __organizeWindowsOnResize = function() {
+	var __organizeWindowsOnBrowserResize = function() {
 		for (let el_window of $$("window")) {
 			if (el_window.style.visibility === "visible") {
 				__organizeWindow(el_window);
@@ -331,10 +372,19 @@ function __WindowManager() {
 		let view = self.getViewGeometry();
 		let rect = el_window.getBoundingClientRect();
 
+		if (el_window.classList.contains("window-resizable")) {
+			// При переполнении рабочей области сократить размер окна
+			if ((rect.bottom - rect.top) > (view.bottom - view.top)) {
+				el_window.style.height = view.bottom - view.top + "px";
+			}
+			if ((rect.right - rect.left) > (view.right - view.left)) {
+				el_window.style.width = view.right - view.left + "px";
+			}
+			rect = el_window.getBoundingClientRect();
+		}
+
 		if (el_window.hasAttribute("data-centered") || center) {
-			el_window.style.top = Math.max(view.top, Math.round((view.bottom - rect.height) / 2)) + "px";
-			el_window.style.left = Math.round((view.right - rect.width) / 2) + "px";
-			el_window.setAttribute("data-centered", "");
+			__centerWindow(el_window);
 		} else {
 			if (rect.top <= view.top) {
 				el_window.style.top = view.top + "px";
@@ -350,6 +400,14 @@ function __WindowManager() {
 		}
 	};
 
+	var __centerWindow = function(el_window) {
+		let view = self.getViewGeometry();
+		let rect = el_window.getBoundingClientRect();
+		el_window.style.top = Math.max(view.top, Math.round((view.bottom - rect.height) / 2)) + "px";
+		el_window.style.left = Math.round((view.right - rect.width) / 2) + "px";
+		el_window.setAttribute("data-centered", "");
+	};
+
 	var __activateLastWindow = function(el_except_window=null) {
 		let el_last_window = null;
 
@@ -415,6 +473,10 @@ function __WindowManager() {
 		let prev_pos = {x: 0, y: 0};
 
 		function startMoving(event) {
+			// При перетаскивании resizable-окна за правый кран экрана оно ужимается.
+			// Этот костыль фиксит это.
+			el_window.style.width = el_window.offsetWidth + "px";
+
 			__closeAllMenues();
 			__activateWindow(el_window);
 			event = (event || window.event);
@@ -474,5 +536,45 @@ function __WindowManager() {
 		el_grab.ontouchstart = startMoving;
 	};
 
+	var __onFullScreenChange = function(event) {
+		let el_window = event.target;
+		if (!document.fullscreenElement) {
+			el_window.style.padding = "";
+			let rect = el_window.before_full_screen;
+			if (rect) {
+				el_window.style.width = rect.width + "px";
+				el_window.style.height = rect.height + "px";
+				el_window.style.top = rect.top + "px";
+				el_window.style.left = rect.left + "px";
+			}
+		} else {
+			el_window.style.padding = "0px 0px 0px 0px";
+		}
+	};
+
+	var __fullScreenWindow = function(el_window) {
+		el_window.before_full_screen = el_window.getBoundingClientRect();
+		el_window.requestFullscreen();
+		if ("keyboard" in navigator && "lock" in navigator.keyboard) {
+			navigator.keyboard.lock();
+		} else {
+			let el_lock_alert = el_window.querySelector(".window-lock-alert");
+			if (el_lock_alert) {
+				tools.hiddenSetVisible(el_lock_alert, true);
+				setTimeout(function() {
+					tools.hiddenSetVisible(el_lock_alert, false);
+				}, 7000);
+			}
+		}
+	};
+
+	var __maximizeWindow = function(el_window) {
+		let vertical_offset = $("navbar").offsetHeight;
+		el_window.style.left = "0px";
+		el_window.style.top = vertical_offset + "px";
+		el_window.style.width = window.innerWidth + "px";
+		el_window.style.height = window.innerHeight - vertical_offset + "px";
+	};
+
 	__init__();
 }