From a55ece023ade11aabadbb3fd8293aceb08ec4da0 Mon Sep 17 00:00:00 2001 From: Cheng-Han, Wu Date: Tue, 15 Mar 2016 11:12:45 +0800 Subject: Improved checkCursorMenu and checkCursorTag performance and fully rewrite its position method for UX and verified --- public/js/index.js | 130 +++++++++++++++++++++++++++++++++-------------------- 1 file changed, 82 insertions(+), 48 deletions(-) (limited to 'public/js/index.js') diff --git a/public/js/index.js b/public/js/index.js index e0213734..79c2af0b 100644 --- a/public/js/index.js +++ b/public/js/index.js @@ -54,7 +54,7 @@ var defaultExtraKeys = { var idleTime = 300000; //5 mins var updateViewDebounce = 200; -var cursorMenuThrottle = 100; +var cursorMenuThrottle = 50; var cursorActivityDebounce = 50; var cursorAnimatePeriod = 100; var supportContainers = ['success', 'info', 'warning', 'danger']; @@ -531,6 +531,8 @@ var ui = { view: $(".ui-view-area"), codemirror: $(".ui-edit-area .CodeMirror"), codemirrorScroll: $(".ui-edit-area .CodeMirror .CodeMirror-scroll"), + codemirrorSizer: $(".ui-edit-area .CodeMirror .CodeMirror-sizer"), + codemirrorSizerInner: $(".ui-edit-area .CodeMirror .CodeMirror-sizer > div"), markdown: $(".ui-view-area .markdown-body") } }; @@ -1897,33 +1899,41 @@ function emitUserStatus(force) { } function checkCursorTag(coord, ele) { - if (!ele) return; - var curosrtagMargin = 60; - var cursor = editor.getCursor(); - //var viewport = editor.getViewport(); - //var viewportHeight = (viewport.to - viewport.from) * editor.defaultTextHeight(); + if (!ele) return; // return if element not exists + // set margin + var tagRightMargin = 0; + var tagBottomMargin = 2; + // use sizer to get the real doc size (won't count status bar and gutters) + var docWidth = ui.area.codemirrorSizer.width(); + var docHeight = ui.area.codemirrorSizer.height(); + // get editor size (status bar not count in) var editorWidth = ui.area.codemirror.width(); var editorHeight = ui.area.codemirror.height(); - var width = ele.width(); - var height = ele.height(); - if (!lineHeightMap) - buildMapInner(); + // get element size + var width = ele.outerWidth(); + var height = ele.outerHeight(); + var padding = (ele.outerWidth() - ele.width()) / 2; + // get coord position var left = coord.left; - var top = lineHeightMap[cursor.line] * defaultTextHeight; //coord.top; - top -= ele.closest('.CodeMirror-sizer > *').position().top; + var top = coord.top; + // get doc top offset (to workaround with viewport) + var docTopOffset = ui.area.codemirrorSizerInner.position().top; + // set offset var offsetLeft = -3; var offsetTop = defaultTextHeight; - var statusBarHeight = 0; - if (statusBar) - statusBarHeight = statusBar.outerHeight(); + // only do when have width and height if (width > 0 && height > 0) { - if (left + width + offsetLeft > editorWidth - curosrtagMargin) { - offsetLeft = -(width + 10); + // flip x when element right bound larger than doc width + if (left + width + offsetLeft + tagRightMargin > docWidth) { + offsetLeft = -(width + tagRightMargin) + padding + offsetLeft; } - if (top + height + offsetTop > Math.max(editor.doc.height, editorHeight) + curosrtagMargin - statusBarHeight * 2 && top - height > curosrtagMargin) { - offsetTop = -(height + 4); + // flip y when element bottom bound larger than doc height + // and element top position is larger than element height + if (top + docTopOffset + height + offsetTop + tagBottomMargin > Math.max(editor.doc.height, editorHeight) && top + docTopOffset > height + tagBottomMargin) { + offsetTop = -(height); } } + // set position ele[0].style.left = offsetLeft + 'px'; ele[0].style.top = offsetTop + 'px'; } @@ -2464,56 +2474,80 @@ if ($('.cursor-menu').length <= 0) { $("
").insertAfter('.CodeMirror-cursors'); } +function reverseSortCursorMenu(dropdown) { + var items = dropdown.find('.textcomplete-item'); + items.sort(function (a, b) { + return $(b).attr('data-index') - $(a).attr('data-index'); + }); + return items; +} + +var lastUpSideDown = false; var upSideDown = false; var checkCursorMenu = _.throttle(checkCursorMenuInner, cursorMenuThrottle); function checkCursorMenuInner() { - var menuMargin = 60; - var dropdown = $('.cursor-menu .dropdown-menu'); + // get element + var dropdown = $('.cursor-menu > .dropdown-menu'); + // return if not exists if (dropdown.length <= 0) return; + // set margin + var menuRightMargin = 10; + var menuBottomMargin = 4; + // use sizer to get the real doc size (won't count status bar and gutters) + var docWidth = ui.area.codemirrorSizer.width(); + var docHeight = ui.area.codemirrorSizer.height(); + // get editor size (status bar not count in) + var editorWidth = ui.area.codemirror.width(); + var editorHeight = ui.area.codemirror.height(); + // get element size + var width = dropdown.outerWidth(); + var height = dropdown.outerHeight(); + // get cursor var cursor = editor.getCursor(); - var scrollInfo = editor.getScrollInfo(); + // set element cursor data if (!dropdown.hasClass('other-cursor')) dropdown.addClass('other-cursor'); dropdown.attr('data-line', cursor.line); dropdown.attr('data-ch', cursor.ch); + // get coord position var coord = editor.charCoords({ line: cursor.line, ch: cursor.ch }, 'windows'); - //var viewport = editor.getViewport(); - //var viewportHeight = (viewport.to - viewport.from) * editor.defaultTextHeight(); - var editorWidth = ui.area.codemirror.width(); - var editorHeight = ui.area.codemirror.height(); - var width = dropdown.outerWidth(); - var height = dropdown.outerHeight(); - if (!lineHeightMap) - buildMapInner(); var left = coord.left; - var top = lineHeightMap[cursor.line] * defaultTextHeight; //coord.top; - top -= dropdown.closest('.CodeMirror-sizer > *').position().top; + var top = coord.top; + // get doc top offset (to workaround with viewport) + var docTopOffset = ui.area.codemirrorSizerInner.position().top; + // set offset var offsetLeft = 0; var offsetTop = defaultTextHeight; - var statusBarHeight = 0; - if (statusBar) - statusBarHeight = statusBar.outerHeight(); - if (left + width + offsetLeft > editorWidth - menuMargin) - offsetLeft = -(left + width - editorWidth + menuMargin); - if (top + height + offsetTop > Math.max(editor.doc.height, editorHeight) + menuMargin - statusBarHeight * 2 && top - height > menuMargin) { - offsetTop = -(height + 4); - upSideDown = true; - var items = dropdown.find('.textcomplete-item'); - items.sort(function (a, b) { - return $(b).attr('data-index') - $(a).attr('data-index'); - }); - dropdown.html(items); - dropdown.scrollTop(dropdown[0].scrollHeight); - } else { - upSideDown = false; + // only do when have width and height + if (width > 0 && height > 0) { + // make element right bound not larger than doc width + if (left + width + offsetLeft + menuRightMargin > docWidth) + offsetLeft = -(left + width - docWidth + menuRightMargin); + // flip y when element bottom bound larger than doc height + // and element top position is larger than element height + if (top + docTopOffset + height + offsetTop + menuBottomMargin > Math.max(editor.doc.height, editorHeight) && top + docTopOffset > height + menuBottomMargin) { + offsetTop = -(height + menuBottomMargin); + // reverse sort menu because upSideDown + dropdown.html(reverseSortCursorMenu(dropdown)); + lastUpSideDown = upSideDown; + upSideDown = true; + } else { + lastUpSideDown = upSideDown; + upSideDown = false; + } } + // make menu scroll top only if upSideDown changed + if (upSideDown !== lastUpSideDown) + dropdown.scrollTop(dropdown[0].scrollHeight); + // set element offset data dropdown.attr('data-offset-left', offsetLeft); dropdown.attr('data-offset-top', offsetTop); + // set position dropdown[0].style.left = left + offsetLeft + 'px'; dropdown[0].style.top = top + offsetTop + 'px'; } -- cgit v1.2.3