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Fixed chooser so that it works when the screen is scrolled

Or indeed zoomed.
This commit is contained in:
Jeremy Ruston 2012-03-14 13:49:05 +00:00
parent 06627cc587
commit 4354c7dbe2
3 changed files with 21 additions and 18 deletions

View File

@ -30,9 +30,12 @@ function showChooser(macroNode) {
}
}
/*
Select the appropriate chooser item given a touch/mouse position in screen coordinates
*/
function select(macroNode,y) {
if(macroNode.content.length > 0) {
var targetIndex = Math.floor(macroNode.content[0].domNode.childNodes.length * (y/macroNode.domNode.offsetHeight)),
var targetIndex = Math.floor(macroNode.content[0].domNode.childNodes.length * (y/window.innerHeight)),
target = macroNode.content[0].domNode.childNodes[targetIndex];
if(target) {
deselect(macroNode);
@ -58,28 +61,27 @@ function action(macroNode) {
}
}
/*
Set the position of the chooser panel within its wrapper given a touch/mouse position in screen coordinates
*/
function hoverChooser(macroNode,x,y) {
if(macroNode.chooserDisplayed) {
// Get the target element that the touch/mouse is over
select(macroNode,y);
// Things we need for sizing and positioning the chooser
var domWrapper = macroNode.domNode,
heightWrapper = domWrapper.offsetHeight,
rectWrapper = domWrapper.getBoundingClientRect(),
domPanel = macroNode.content[0].domNode,
var domPanel = macroNode.content[0].domNode,
heightPanel = domPanel.offsetHeight,
widthPanel = domPanel.offsetWidth;
// Make the coordinates relative to the wrapper
x = x - rectWrapper.left;
y = y - rectWrapper.top;
// Position the chooser div to account for scrolling
macroNode.content[0].domNode.style.top = window.pageYOffset + "px";
// Scale the panel to fit
var scaleFactor = heightWrapper/heightPanel;
var scaleFactor = window.innerHeight/heightPanel;
// Scale up as we move right
var expandFactor = x > 50 ? (x/50) : 1;
// Set up the transform
var scale = scaleFactor * expandFactor,
translateX = 0, //x > 50 ? 0 : -(((50-x)/50) * widthPanel) / scale,
translateY = (y / scale) - ((y/heightWrapper) * heightPanel);
translateY = (y / scale) - ((y/window.innerHeight) * heightPanel);
domPanel.style.webkitTransformOrigin = "0 0";
domPanel.style.webkitTransform = "scale(" + scale + ") translateX(" + translateX + "px) translateY(" + translateY + "px)";
}

View File

@ -1,3 +1,7 @@
body {
position: relative;
}
.title {
font-weight: bold;
font-size: 40px;
@ -110,20 +114,17 @@ a.tw-tiddlylink-missing {
font-family: Helvetica, Arial, sans-serif;
}
.navigation-panel {
.navigation-panel div {
position: absolute;
top: 0;
left: 0;
top: 0;
min-width: 16px;
height: 100%;
}
.navigation-panel div {
width: 100%;
height: 100%;
}
.navigation-panel div ul {
position: absolute;
left: 0;
margin: 0 0 0 0;
padding: 0px 4px 0px 4px;
list-style: none;

View File

@ -3,6 +3,6 @@ title: PageTemplate
{{navigation-panel{
<<chooser>>
}}}
{{container{
{{container-fluid{
<<story story:StoryTiddlers template:SimpleTemplate>>
}}}