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terminal much better

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Peter Cottle 2013-01-08 12:00:58 -08:00
parent eed87168ed
commit 8bd5fb3196
7 changed files with 78 additions and 58 deletions
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32
src/js/views/commandViews.js
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@ -37,7 +37,7 @@ var CommandPromptView = Backbone.View.extend({
});
this.index = -1;
this.commandSpan = this.$('#prompt span.command')[0];
this.commandParagraph = this.$('#prompt p.command')[0];
this.commandCursor = this.$('#prompt span.cursor')[0];
this.focus();
@ -74,16 +74,11 @@ var CommandPromptView = Backbone.View.extend({
},
onKeyDown: function(e) {
console.log('on keydown');
console.log(e);
var el = e.srcElement;
this.updatePrompt(el);
},
onKeyUp: function(e) {
console.log('on key up');
console.log(e);
this.onKeyDown(e);
// we need to capture some of these events.
@ -126,7 +121,7 @@ var CommandPromptView = Backbone.View.extend({
// well...
var text = $('#commandTextField').val();
var val = this.badHtmlEncode(text);
this.commandSpan.innerHTML = val;
this.commandParagraph.innerHTML = val;
// now mutate the cursor...
this.cursorUpdate(text.length, el.selectionStart, el.selectionEnd);
@ -136,24 +131,31 @@ var CommandPromptView = Backbone.View.extend({
cursorUpdate: function(commandLength, selectionStart, selectionEnd) {
if (selectionStart === undefined || selectionEnd === undefined) {
selectionStart = 0;
selectionEnd = 1;
selectionStart = commandLength - 1;
selectionEnd = commandLength;
}
// 10px for monospaced font at "1" zoom
var zoom = require('../util/zoomLevel').detectZoom();
var widthPerChar = 10 * zoom;
var heightPerRow = 22 * zoom;
var numCharsSelected = Math.max(1, selectionEnd - selectionStart);
var width = String(numCharsSelected * widthPerChar) + 'px';
var widthOfParagraph = $(this.commandParagraph).width();
var numCharsPerLine = widthOfParagraph / widthPerChar;
var numCharsSelected = Math.min(Math.max(1, selectionEnd - selectionStart), numCharsPerLine);
var widthOfSelection = String(numCharsSelected * widthPerChar) + 'px';
// now for positioning
var numLeft = (selectionStart !== undefined) ? Math.max(commandLength - selectionStart, 0) : 0;
var left = String(-numLeft * widthPerChar) + 'px';
var leftOffset = String(widthPerChar * (selectionStart % numCharsPerLine)) + 'px';
var topOffset = String(Math.floor(selectionStart / numCharsPerLine) * heightPerRow) + 'px';
console.log('height per row', heightPerRow, 'selection start', selectionStart, 'num chars perline', numCharsPerLine);
// one reflow? :D
$(this.commandCursor).css({
width: width,
left: left
width: widthOfSelection,
left: leftOffset,
top: topOffset
});
},