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Update users displayed per scrollbar position

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David Rowe 2015-03-26 11:21:56 -07:00
parent 14e92eecad
commit c7fe7aa157
1 changed files with 18 additions and 6 deletions
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24
examples/users.js
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@ -44,6 +44,7 @@ var usersWindow = (function () {
usersOnline, // Raw users data usersOnline, // Raw users data
linesOfUsers = [], // Array of indexes pointing into usersOnline linesOfUsers = [], // Array of indexes pointing into usersOnline
numUsersToDisplay = 0, numUsersToDisplay = 0,
firstUserToDisplay = 0,
API_URL = "https://metaverse.highfidelity.com/api/v1/users?status=online", API_URL = "https://metaverse.highfidelity.com/api/v1/users?status=online",
HTTP_GET_TIMEOUT = 60000, // ms = 1 minute HTTP_GET_TIMEOUT = 60000, // ms = 1 minute
@ -102,6 +103,12 @@ var usersWindow = (function () {
// Corresponding number of users to actually display // Corresponding number of users to actually display
numUsersToDisplay = Math.max(Math.round((windowHeight - nonUsersHeight) / windowLineHeight), 0); numUsersToDisplay = Math.max(Math.round((windowHeight - nonUsersHeight) / windowLineHeight), 0);
isUsingScrollbars = 0 < numUsersToDisplay && numUsersToDisplay < linesOfUsers.length; isUsingScrollbars = 0 < numUsersToDisplay && numUsersToDisplay < linesOfUsers.length;
if (isUsingScrollbars) {
firstUserToDisplay = Math.floor(scrollbarValue * (linesOfUsers.length - numUsersToDisplay));
} else {
firstUserToDisplay = 0;
scrollbarValue = 0.0;
}
} }
function updateOverlayPositions() { function updateOverlayPositions() {
@ -163,7 +170,7 @@ var usersWindow = (function () {
reducedTextWidth = maxTextWidth - ellipsisWidth; reducedTextWidth = maxTextWidth - ellipsisWidth;
for (i = 0; i < numUsersToDisplay; i += 1) { for (i = 0; i < numUsersToDisplay; i += 1) {
user = usersOnline[linesOfUsers[i]]; user = usersOnline[linesOfUsers[firstUserToDisplay + i]];
userText = user.text; userText = user.text;
textWidth = user.textWidth; textWidth = user.textWidth;
@ -320,6 +327,7 @@ var usersWindow = (function () {
minY, minY,
maxY, maxY,
lineClicked, lineClicked,
userClicked,
i, i,
visibilityChanged; visibilityChanged;
@ -334,7 +342,7 @@ var usersWindow = (function () {
overlayX = event.x - WINDOW_MARGIN_2D; overlayX = event.x - WINDOW_MARGIN_2D;
overlayY = event.y - viewportHeight + windowHeight - WINDOW_MARGIN_2D - windowLineHeight; overlayY = event.y - viewportHeight + windowHeight - WINDOW_MARGIN_2D - windowLineHeight;
numLinesBefore = Math.floor(overlayY / windowLineHeight); numLinesBefore = Math.round(overlayY / windowLineHeight);
minY = numLinesBefore * windowLineHeight; minY = numLinesBefore * windowLineHeight;
maxY = minY + windowTextHeight; maxY = minY + windowTextHeight;
@ -343,10 +351,12 @@ var usersWindow = (function () {
lineClicked = numLinesBefore; lineClicked = numLinesBefore;
} }
if (0 <= lineClicked && lineClicked < linesOfUsers.length userClicked = firstUserToDisplay + lineClicked;
&& 0 <= overlayX && overlayX <= usersOnline[linesOfUsers[lineClicked]].textWidth) {
//print("Go to " + usersOnline[linesOfUsers[lineClicked]].username); if (0 <= userClicked && userClicked < linesOfUsers.length
location.goToUser(usersOnline[linesOfUsers[lineClicked]].username); && 0 <= overlayX && overlayX <= usersOnline[linesOfUsers[userClicked]].textWidth) {
//print("Go to " + usersOnline[linesOfUsers[userClicked]].username);
location.goToUser(usersOnline[linesOfUsers[userClicked]].username);
} }
} }
@ -381,7 +391,9 @@ var usersWindow = (function () {
scrollbarValue = (event.y - scrollbarBarClickedAt * scrollbarBarHeight - scrollbarBackgroundPosition.y) scrollbarValue = (event.y - scrollbarBarClickedAt * scrollbarBarHeight - scrollbarBackgroundPosition.y)
/ (scrollbarBackgroundHeight - scrollbarBarHeight - 2); / (scrollbarBackgroundHeight - scrollbarBarHeight - 2);
scrollbarValue = Math.min(Math.max(scrollbarValue, 0.0), 1.0); scrollbarValue = Math.min(Math.max(scrollbarValue, 0.0), 1.0);
firstUserToDisplay = Math.floor(scrollbarValue * (linesOfUsers.length - numUsersToDisplay));
updateOverlayPositions(); updateOverlayPositions();
updateUsersDisplay();
} else { } else {
isMovingScrollbar = false; isMovingScrollbar = false;
} }