mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-09-07 05:31:22 +00:00
Reorganize interface code.
This commit is contained in:
Michael Jumper
@@ -12,7 +12,7 @@ GuacUI.Client = {
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/**
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* The normal default Guacamole client UI mode
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*/
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"INTERACTIVE" : 0,
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"INTERACTIVE" : 0,
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/**
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* Same as INTERACTIVE except with visible on-screen keyboard.
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@@ -46,388 +46,15 @@ GuacUI.Client = {
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"viewport" : document.getElementById("viewportClone"),
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"display" : document.getElementById("display"),
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"client" : null,
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/* Expected Input Rectangle */
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"expected_input_x" : 0,
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"expected_input_y" : 0,
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"expected_input_width" : 1,
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"expected_input_height" : 1
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"expected_input_x" : 0,
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"expected_input_y" : 0,
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"expected_input_width" : 1,
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"expected_input_height" : 1,
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};
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// Tie UI events / behavior to a specific Guacamole client
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GuacUI.Client.attach = function(guac) {
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GuacUI.client = guac;
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var title_prefix = null;
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var connection_name = "Guacamole";
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var guac_display = guac.getDisplay();
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// Set document title appropriately, based on prefix and connection name
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function updateTitle() {
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// Use title prefix if present
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if (title_prefix) {
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document.title = title_prefix;
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// Include connection name, if present
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if (connection_name)
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document.title += " " + connection_name;
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}
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// Otherwise, just set to connection name
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else if (connection_name)
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document.title = connection_name;
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}
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guac_display.onclick = function(e) {
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e.preventDefault();
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return false;
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};
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// Mouse
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var mouse = new Guacamole.Mouse(guac_display);
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var touch = new Guacamole.Mouse.Touchpad(guac_display);
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touch.onmousedown = touch.onmouseup = touch.onmousemove =
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mouse.onmousedown = mouse.onmouseup = mouse.onmousemove =
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function(mouseState) {
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// Determine mouse position within view
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var mouse_view_x = mouseState.x + guac_display.offsetLeft - window.pageXOffset;
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var mouse_view_y = mouseState.y + guac_display.offsetTop - window.pageYOffset;
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// Determine viewport dimensioins
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var view_width = GuacUI.Client.viewport.offsetWidth;
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var view_height = GuacUI.Client.viewport.offsetHeight;
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// Determine scroll amounts based on mouse position relative to document
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var scroll_amount_x;
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if (mouse_view_x > view_width)
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scroll_amount_x = mouse_view_x - view_width;
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else if (mouse_view_x < 0)
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scroll_amount_x = mouse_view_x;
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else
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scroll_amount_x = 0;
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var scroll_amount_y;
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if (mouse_view_y > view_height)
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scroll_amount_y = mouse_view_y - view_height;
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else if (mouse_view_y < 0)
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scroll_amount_y = mouse_view_y;
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else
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scroll_amount_y = 0;
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// Scroll (if necessary) to keep mouse on screen.
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window.scrollBy(scroll_amount_x, scroll_amount_y);
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// Scale event by current scale
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var scaledState = new Guacamole.Mouse.State(
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mouseState.x / guac.getScale(),
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mouseState.y / guac.getScale(),
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mouseState.left,
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mouseState.middle,
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mouseState.right,
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mouseState.up,
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mouseState.down);
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// Send mouse event
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guac.sendMouseState(scaledState);
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};
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// Keyboard
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var keyboard = new Guacamole.Keyboard(document);
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var show_keyboard_gesture_possible = true;
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keyboard.onkeydown = function (keysym) {
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guac.sendKeyEvent(1, keysym);
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// If key is NOT one of the expected keys, gesture not possible
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if (keysym != 0xFFE3 && keysym != 0xFFE9 && keysym != 0xFFE1)
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show_keyboard_gesture_possible = false;
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};
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keyboard.onkeyup = function (keysym) {
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guac.sendKeyEvent(0, keysym);
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// If lifting up on shift, toggle keyboard if rest of gesture
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// conditions satisfied
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if (show_keyboard_gesture_possible && keysym == 0xFFE1) {
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if (keyboard.pressed[0xFFE3] && keyboard.pressed[0xFFE9]) {
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// If in INTERACTIVE mode, switch to OSK
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if (GuacUI.StateManager.getState() == GuacUI.Client.states.INTERACTIVE)
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GuacUI.StateManager.setState(GuacUI.Client.states.OSK);
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// If in OSK mode, switch to INTERACTIVE
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else if (GuacUI.StateManager.getState() == GuacUI.Client.states.OSK)
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GuacUI.StateManager.setState(GuacUI.Client.states.INTERACTIVE);
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}
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}
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// Detect if no keys are pressed
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var reset_gesture = true;
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for (var pressed in keyboard.pressed) {
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reset_gesture = false;
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break;
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}
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// Reset gesture state if possible
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if (reset_gesture)
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show_keyboard_gesture_possible = true;
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};
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function isTypableCharacter(keysym) {
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return (keysym & 0xFFFF00) != 0xFF00;
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}
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function updateThumbnail() {
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// Get screenshot
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var canvas = guac.flatten();
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// Calculate scale of thumbnail (max 320x240, max zoom 100%)
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var scale = Math.min(
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320 / canvas.width,
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240 / canvas.height,
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1
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);
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// Create thumbnail canvas
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var thumbnail = document.createElement("canvas");
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thumbnail.width = canvas.width*scale;
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thumbnail.height = canvas.height*scale;
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// Scale screenshot to thumbnail
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var context = thumbnail.getContext("2d");
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context.drawImage(canvas,
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0, 0, canvas.width, canvas.height,
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0, 0, thumbnail.width, thumbnail.height
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);
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// Save thumbnail to history
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var id = decodeURIComponent(window.location.search.substring(4));
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GuacamoleHistory.update(id, thumbnail.toDataURL());
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}
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function updateDisplayScale() {
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// If auto-fit is enabled, scale display
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if (GuacUI.sessionState.getProperty("auto-fit")) {
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// Calculate scale to fit screen
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var fit_scale = Math.min(
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window.innerWidth / guac.getWidth(),
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window.innerHeight / guac.getHeight()
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);
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// Scale client
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if (fit_scale != guac.getScale())
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guac.scale(fit_scale);
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}
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// Otherwise, scale to 100%
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else if (guac.getScale() != 1.0)
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guac.scale(1.0);
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}
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// Handle resize
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guac.onresize = function(width, height) {
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updateDisplayScale();
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}
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var last_status_notification = null;
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function hideStatus() {
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if (last_status_notification)
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last_status_notification.hide();
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last_status_notification = null;
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}
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function showStatus(status) {
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hideStatus();
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last_status_notification = new GuacUI.Client.ModalStatus(status);
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last_status_notification.show();
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}
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function showError(status) {
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hideStatus();
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last_status_notification = new GuacUI.Client.ModalStatus(status);
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last_status_notification.show();
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}
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// Handle client state change
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guac.onstatechange = function(clientState) {
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switch (clientState) {
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// Idle
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case 0:
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showStatus("Idle.");
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title_prefix = "[Idle]";
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break;
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// Connecting
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case 1:
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showStatus("Connecting...");
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title_prefix = "[Connecting...]";
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break;
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// Connected + waiting
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case 2:
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showStatus("Connected, waiting for first update...");
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title_prefix = "[Waiting...]";
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break;
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// Connected
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case 3:
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hideStatus();
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title_prefix = null;
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// Update clipboard with current data
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if (GuacUI.sessionState.getProperty("clipboard"))
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guac.setClipboard(GuacUI.sessionState.getProperty("clipboard"));
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// Regularly update screenshot
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window.setInterval(updateThumbnail, 1000);
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break;
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// Disconnecting
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case 4:
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showStatus("Disconnecting...");
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title_prefix = "[Disconnecting...]";
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break;
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// Disconnected
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case 5:
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showStatus("Disconnected.");
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title_prefix = "[Disconnected]";
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break;
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// Unknown status code
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default:
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showStatus("[UNKNOWN STATUS]");
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}
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updateTitle();
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};
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// Name instruction handler
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guac.onname = function(name) {
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connection_name = name;
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updateTitle();
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};
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// Error handler
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guac.onerror = function(error) {
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// Disconnect, if connected
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guac.disconnect();
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// Display error message
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showError(error);
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};
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// Disconnect and update thumbnail on close
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window.onunload = function() {
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updateThumbnail();
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guac.disconnect();
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};
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// Send size events on resize
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window.onresize = function() {
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guac.sendSize(window.innerWidth, window.innerHeight);
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updateDisplayScale();
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};
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// Server copy handler
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guac.onclipboard = function(data) {
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GuacUI.sessionState.setProperty("clipboard", data);
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};
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GuacUI.sessionState.onchange = function(old_state, new_state, name) {
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if (name == "clipboard")
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guac.setClipboard(new_state[name]);
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else if (name == "auto-fit")
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updateDisplayScale();
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};
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var long_press_start_x = 0;
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var long_press_start_y = 0;
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var longPressTimeout = null;
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GuacUI.Client.startLongPressDetect = function() {
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if (!longPressTimeout) {
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longPressTimeout = window.setTimeout(function() {
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longPressTimeout = null;
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if (GuacUI.Client.client.getScale() != 1.0)
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GuacUI.StateManager.setState(GuacUI.Client.states.MAGNIFIER);
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else
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GuacUI.StateManager.setState(GuacUI.Client.states.PAN);
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}, GuacUI.Client.LONG_PRESS_DETECT_TIMEOUT);
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}
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};
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GuacUI.Client.stopLongPressDetect = function() {
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window.clearTimeout(longPressTimeout);
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longPressTimeout = null;
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};
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// Detect long-press at bottom of screen
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GuacUI.Client.display.addEventListener('touchstart', function(e) {
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// Record touch location
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if (e.touches.length == 1) {
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var touch = e.touches[0];
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long_press_start_x = touch.screenX;
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long_press_start_y = touch.screenY;
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}
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// Start detection
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GuacUI.Client.startLongPressDetect();
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}, true);
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// Stop detection if touch moves significantly
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GuacUI.Client.display.addEventListener('touchmove', function(e) {
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// If touch distance from start exceeds threshold, cancel long press
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var touch = e.touches[0];
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if (Math.abs(touch.screenX - long_press_start_x) >= GuacUI.Client.LONG_PRESS_MOVEMENT_THRESHOLD
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|| Math.abs(touch.screenY - long_press_start_y) >= GuacUI.Client.LONG_PRESS_MOVEMENT_THRESHOLD)
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GuacUI.Client.stopLongPressDetect();
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}, true);
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// Stop detection if press stops
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GuacUI.Client.display.addEventListener('touchend', GuacUI.Client.stopLongPressDetect, true);
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"connectionName" : "Guacamole",
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"attachedClient" : null
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};
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@@ -497,9 +124,9 @@ GuacUI.Client.Magnifier = function() {
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// Update contents relative to new position
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var clip_x = x
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/ (window.innerWidth - width) * (GuacUI.Client.client.getWidth() - width);
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/ (window.innerWidth - width) * (GuacUI.Client.attachedClient.getWidth() - width);
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var clip_y = y
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/ (window.innerHeight - height) * (GuacUI.Client.client.getHeight() - height);
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/ (window.innerHeight - height) * (GuacUI.Client.attachedClient.getHeight() - height);
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magnifier_display.style.WebkitTransform =
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magnifier_display.style.MozTransform =
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@@ -523,9 +150,9 @@ GuacUI.Client.Magnifier = function() {
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this.show = function() {
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// Copy displayed image
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magnifier_display.width = GuacUI.Client.client.getWidth();
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magnifier_display.height = GuacUI.Client.client.getHeight();
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magnifier_context.drawImage(GuacUI.Client.client.flatten(), 0, 0);
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magnifier_display.width = GuacUI.Client.attachedClient.getWidth();
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magnifier_display.height = GuacUI.Client.attachedClient.getHeight();
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magnifier_context.drawImage(GuacUI.Client.attachedClient.flatten(), 0, 0);
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// Show magnifier container
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document.body.appendChild(magnifier_background);
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@@ -583,12 +210,12 @@ GuacUI.Client.ZoomedDisplay = function() {
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var old_scale = null;
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this.show = function() {
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old_scale = GuacUI.Client.client.getScale();
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GuacUI.Client.client.scale(1.0);
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old_scale = GuacUI.Client.attachedClient.getScale();
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GuacUI.Client.attachedClient.scale(1.0);
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};
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this.hide = function() {
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GuacUI.Client.client.scale(old_scale);
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GuacUI.Client.attachedClient.scale(old_scale);
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};
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};
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@@ -756,11 +383,11 @@ GuacUI.Client.OnScreenKeyboard = function() {
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}
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keyboard.onkeydown = function(keysym) {
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GuacUI.Client.client.sendKeyEvent(1, keysym);
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GuacUI.Client.attachedClient.sendKeyEvent(1, keysym);
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};
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keyboard.onkeyup = function(keysym) {
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GuacUI.Client.client.sendKeyEvent(0, keysym);
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GuacUI.Client.attachedClient.sendKeyEvent(0, keysym);
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};
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@@ -844,3 +471,416 @@ GuacUI.Client.ModalStatus = function(text) {
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GuacUI.Client.ModalStatus.prototype = new GuacUI.Component();
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/**
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* Flattens the attached Guacamole.Client, storing the result within the
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* connection history.
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*/
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GuacUI.Client.updateThumbnail = function() {
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// Get screenshot
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var canvas = GuacUI.Client.attachedClient.flatten();
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// Calculate scale of thumbnail (max 320x240, max zoom 100%)
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var scale = Math.min(
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320 / canvas.width,
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240 / canvas.height,
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1
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);
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// Create thumbnail canvas
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var thumbnail = document.createElement("canvas");
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thumbnail.width = canvas.width*scale;
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thumbnail.height = canvas.height*scale;
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// Scale screenshot to thumbnail
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var context = thumbnail.getContext("2d");
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context.drawImage(canvas,
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0, 0, canvas.width, canvas.height,
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0, 0, thumbnail.width, thumbnail.height
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);
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// Save thumbnail to history
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var id = decodeURIComponent(window.location.search.substring(4));
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GuacamoleHistory.update(id, thumbnail.toDataURL());
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};
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/**
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* Updates the scale of the attached Guacamole.Client based on current window
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* size and "auto-fit" setting.
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*/
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GuacUI.Client.updateDisplayScale = function() {
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// Currently attacched client
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var guac = GuacUI.Client.attachedClient;
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// If auto-fit is enabled, scale display
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if (GuacUI.sessionState.getProperty("auto-fit")) {
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|
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// Calculate scale to fit screen
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||||
var fit_scale = Math.min(
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window.innerWidth / guac.getWidth(),
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||||
window.innerHeight / guac.getHeight()
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);
|
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// Scale client
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||||
if (fit_scale != guac.getScale())
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||||
guac.scale(fit_scale);
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||||
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||||
}
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||||
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||||
// Otherwise, scale to 100%
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||||
else if (guac.getScale() != 1.0)
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||||
guac.scale(1.0);
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||||
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||||
};
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||||
|
||||
/**
|
||||
* Hides the currently-visible status overlay, if any.
|
||||
*/
|
||||
GuacUI.Client.hideStatus = function() {
|
||||
if (GuacUI.Client.visibleStatus)
|
||||
GuacUI.Client.visibleStatus.hide();
|
||||
GuacUI.Client.visibleStatus = null;
|
||||
};
|
||||
|
||||
/**
|
||||
* Displays a status overlay with the given text.
|
||||
*/
|
||||
GuacUI.Client.showStatus = function(status) {
|
||||
GuacUI.Client.hideStatus();
|
||||
|
||||
GuacUI.Client.visibleStatus = new GuacUI.Client.ModalStatus(status);
|
||||
GuacUI.Client.visibleStatus.show();
|
||||
};
|
||||
|
||||
/**
|
||||
* Displays an error status overlay with the given text.
|
||||
*/
|
||||
GuacUI.Client.showError = function(status) {
|
||||
GuacUI.Client.hideStatus();
|
||||
|
||||
GuacUI.Client.visibleStatus = new GuacUI.Client.ModalStatus(status);
|
||||
GuacUI.Client.visibleStatus.show();
|
||||
}
|
||||
|
||||
/**
|
||||
* Attaches a Guacamole.Client to the client UI, such that Guacamole events
|
||||
* affect the UI, and local events affect the Guacamole.Client.
|
||||
*
|
||||
* @param {Guacamole.Client} guac The Guacamole.Client to attach to the UI.
|
||||
*/
|
||||
GuacUI.Client.attach = function(guac) {
|
||||
|
||||
// Store attached client
|
||||
GuacUI.Client.attachedClient = guac;
|
||||
|
||||
// Get display element
|
||||
var guac_display = guac.getDisplay();
|
||||
|
||||
/*
|
||||
* Update the scale of the display when the client display size changes.
|
||||
*/
|
||||
|
||||
guac.onresize = function(width, height) {
|
||||
updateDisplayScale();
|
||||
}
|
||||
|
||||
/*
|
||||
* Update UI when the state of the Guacamole.Client changes.
|
||||
*/
|
||||
|
||||
guac.onstatechange = function(clientState) {
|
||||
|
||||
var title_prefix;
|
||||
|
||||
switch (clientState) {
|
||||
|
||||
// Idle
|
||||
case 0:
|
||||
showStatus("Idle.");
|
||||
title_prefix = "[Idle]";
|
||||
break;
|
||||
|
||||
// Connecting
|
||||
case 1:
|
||||
showStatus("Connecting...");
|
||||
title_prefix = "[Connecting...]";
|
||||
break;
|
||||
|
||||
// Connected + waiting
|
||||
case 2:
|
||||
showStatus("Connected, waiting for first update...");
|
||||
title_prefix = "[Waiting...]";
|
||||
break;
|
||||
|
||||
// Connected
|
||||
case 3:
|
||||
|
||||
hideStatus();
|
||||
title_prefix = null;
|
||||
|
||||
// Update clipboard with current data
|
||||
if (GuacUI.sessionState.getProperty("clipboard"))
|
||||
guac.setClipboard(GuacUI.sessionState.getProperty("clipboard"));
|
||||
|
||||
break;
|
||||
|
||||
// Disconnecting
|
||||
case 4:
|
||||
showStatus("Disconnecting...");
|
||||
title_prefix = "[Disconnecting...]";
|
||||
break;
|
||||
|
||||
// Disconnected
|
||||
case 5:
|
||||
showStatus("Disconnected.");
|
||||
title_prefix = "[Disconnected]";
|
||||
break;
|
||||
|
||||
// Unknown status code
|
||||
default:
|
||||
showStatus("[UNKNOWN STATUS]");
|
||||
|
||||
}
|
||||
|
||||
document.title = title_prefix + " " + GuacUI.Client.connectionName;
|
||||
|
||||
};
|
||||
|
||||
/*
|
||||
* Change UI to reflect the connection name
|
||||
*/
|
||||
|
||||
guac.onname = function(name) {
|
||||
GuacUI.Client.connectionName = name;
|
||||
};
|
||||
|
||||
/*
|
||||
* Disconnect and display an error message when the Guacamole.Client
|
||||
* receives an error.
|
||||
*/
|
||||
|
||||
guac.onerror = function(error) {
|
||||
|
||||
// Disconnect, if connected
|
||||
guac.disconnect();
|
||||
|
||||
// Display error message
|
||||
showError(error);
|
||||
|
||||
};
|
||||
|
||||
// Server copy handler
|
||||
guac.onclipboard = function(data) {
|
||||
GuacUI.sessionState.setProperty("clipboard", data);
|
||||
};
|
||||
|
||||
/*
|
||||
* Do nothing when the display element is clicked on.
|
||||
*/
|
||||
|
||||
guac_display.onclick = function(e) {
|
||||
e.preventDefault();
|
||||
return false;
|
||||
};
|
||||
|
||||
/*
|
||||
* Handle mouse and touch events relative to the display element.
|
||||
*/
|
||||
|
||||
// Mouse
|
||||
var mouse = new Guacamole.Mouse(guac_display);
|
||||
var touch = new Guacamole.Mouse.Touchpad(document);
|
||||
touch.onmousedown = touch.onmouseup = touch.onmousemove =
|
||||
mouse.onmousedown = mouse.onmouseup = mouse.onmousemove =
|
||||
function(mouseState) {
|
||||
|
||||
// Determine mouse position within view
|
||||
var mouse_view_x = mouseState.x + guac_display.offsetLeft - window.pageXOffset;
|
||||
var mouse_view_y = mouseState.y + guac_display.offsetTop - window.pageYOffset;
|
||||
|
||||
// Determine viewport dimensioins
|
||||
var view_width = GuacUI.Client.viewport.offsetWidth;
|
||||
var view_height = GuacUI.Client.viewport.offsetHeight;
|
||||
|
||||
// Determine scroll amounts based on mouse position relative to document
|
||||
|
||||
var scroll_amount_x;
|
||||
if (mouse_view_x > view_width)
|
||||
scroll_amount_x = mouse_view_x - view_width;
|
||||
else if (mouse_view_x < 0)
|
||||
scroll_amount_x = mouse_view_x;
|
||||
else
|
||||
scroll_amount_x = 0;
|
||||
|
||||
var scroll_amount_y;
|
||||
if (mouse_view_y > view_height)
|
||||
scroll_amount_y = mouse_view_y - view_height;
|
||||
else if (mouse_view_y < 0)
|
||||
scroll_amount_y = mouse_view_y;
|
||||
else
|
||||
scroll_amount_y = 0;
|
||||
|
||||
// Scroll (if necessary) to keep mouse on screen.
|
||||
window.scrollBy(scroll_amount_x, scroll_amount_y);
|
||||
|
||||
// Scale event by current scale
|
||||
var scaledState = new Guacamole.Mouse.State(
|
||||
mouseState.x / guac.getScale(),
|
||||
mouseState.y / guac.getScale(),
|
||||
mouseState.left,
|
||||
mouseState.middle,
|
||||
mouseState.right,
|
||||
mouseState.up,
|
||||
mouseState.down);
|
||||
|
||||
// Send mouse event
|
||||
guac.sendMouseState(scaledState);
|
||||
|
||||
};
|
||||
|
||||
/*
|
||||
* Route document-level keyboard events to the client.
|
||||
*/
|
||||
|
||||
|
||||
var keyboard = new Guacamole.Keyboard(document);
|
||||
var show_keyboard_gesture_possible = true;
|
||||
|
||||
keyboard.onkeydown = function (keysym) {
|
||||
guac.sendKeyEvent(1, keysym);
|
||||
|
||||
// If key is NOT one of the expected keys, gesture not possible
|
||||
if (keysym != 0xFFE3 && keysym != 0xFFE9 && keysym != 0xFFE1)
|
||||
show_keyboard_gesture_possible = false;
|
||||
|
||||
};
|
||||
|
||||
keyboard.onkeyup = function (keysym) {
|
||||
guac.sendKeyEvent(0, keysym);
|
||||
|
||||
// If lifting up on shift, toggle keyboard if rest of gesture
|
||||
// conditions satisfied
|
||||
if (show_keyboard_gesture_possible && keysym == 0xFFE1) {
|
||||
if (keyboard.pressed[0xFFE3] && keyboard.pressed[0xFFE9]) {
|
||||
|
||||
// If in INTERACTIVE mode, switch to OSK
|
||||
if (GuacUI.StateManager.getState() == GuacUI.Client.states.INTERACTIVE)
|
||||
GuacUI.StateManager.setState(GuacUI.Client.states.OSK);
|
||||
|
||||
// If in OSK mode, switch to INTERACTIVE
|
||||
else if (GuacUI.StateManager.getState() == GuacUI.Client.states.OSK)
|
||||
GuacUI.StateManager.setState(GuacUI.Client.states.INTERACTIVE);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
// Detect if no keys are pressed
|
||||
var reset_gesture = true;
|
||||
for (var pressed in keyboard.pressed) {
|
||||
reset_gesture = false;
|
||||
break;
|
||||
}
|
||||
|
||||
// Reset gesture state if possible
|
||||
if (reset_gesture)
|
||||
show_keyboard_gesture_possible = true;
|
||||
|
||||
};
|
||||
|
||||
var thumbnail_update_interval;
|
||||
|
||||
window.onblur = function() {
|
||||
|
||||
// Regularly update screenshot if window not visible
|
||||
thumbnail_update_interval = window.setInterval(updateThumbnail, 1000);
|
||||
|
||||
};
|
||||
|
||||
window.onfocus = function() {
|
||||
window.clearInterval(thumbnail_update_interval);
|
||||
};
|
||||
|
||||
/*
|
||||
* Disconnect and update thumbnail on close
|
||||
*/
|
||||
window.onunload = function() {
|
||||
|
||||
updateThumbnail();
|
||||
guac.disconnect();
|
||||
|
||||
};
|
||||
|
||||
/*
|
||||
* Send size events on resize
|
||||
*/
|
||||
window.onresize = function() {
|
||||
|
||||
guac.sendSize(window.innerWidth, window.innerHeight);
|
||||
updateDisplayScale();
|
||||
|
||||
};
|
||||
|
||||
GuacUI.sessionState.onchange = function(old_state, new_state, name) {
|
||||
if (name == "clipboard")
|
||||
guac.setClipboard(new_state[name]);
|
||||
else if (name == "auto-fit")
|
||||
updateDisplayScale();
|
||||
};
|
||||
|
||||
var long_press_start_x = 0;
|
||||
var long_press_start_y = 0;
|
||||
var longPressTimeout = null;
|
||||
|
||||
GuacUI.Client.startLongPressDetect = function() {
|
||||
|
||||
if (!longPressTimeout) {
|
||||
|
||||
longPressTimeout = window.setTimeout(function() {
|
||||
longPressTimeout = null;
|
||||
if (GuacUI.Client.attachedClient.getScale() != 1.0)
|
||||
GuacUI.StateManager.setState(GuacUI.Client.states.MAGNIFIER);
|
||||
else
|
||||
GuacUI.StateManager.setState(GuacUI.Client.states.PAN);
|
||||
}, GuacUI.Client.LONG_PRESS_DETECT_TIMEOUT);
|
||||
|
||||
}
|
||||
};
|
||||
|
||||
GuacUI.Client.stopLongPressDetect = function() {
|
||||
window.clearTimeout(longPressTimeout);
|
||||
longPressTimeout = null;
|
||||
};
|
||||
|
||||
// Detect long-press at bottom of screen
|
||||
GuacUI.Client.display.addEventListener('touchstart', function(e) {
|
||||
|
||||
// Record touch location
|
||||
if (e.touches.length == 1) {
|
||||
var touch = e.touches[0];
|
||||
long_press_start_x = touch.screenX;
|
||||
long_press_start_y = touch.screenY;
|
||||
}
|
||||
|
||||
// Start detection
|
||||
GuacUI.Client.startLongPressDetect();
|
||||
|
||||
}, true);
|
||||
|
||||
// Stop detection if touch moves significantly
|
||||
GuacUI.Client.display.addEventListener('touchmove', function(e) {
|
||||
|
||||
// If touch distance from start exceeds threshold, cancel long press
|
||||
var touch = e.touches[0];
|
||||
if (Math.abs(touch.screenX - long_press_start_x) >= GuacUI.Client.LONG_PRESS_MOVEMENT_THRESHOLD
|
||||
|| Math.abs(touch.screenY - long_press_start_y) >= GuacUI.Client.LONG_PRESS_MOVEMENT_THRESHOLD)
|
||||
GuacUI.Client.stopLongPressDetect();
|
||||
|
||||
}, true);
|
||||
|
||||
// Stop detection if press stops
|
||||
GuacUI.Client.display.addEventListener('touchend', GuacUI.Client.stopLongPressDetect, true);
|
||||
|
||||
};
|
||||
|
||||
|
||||
Reference in New Issue
Block a user