Bluejie
Gebruiker
- Lid geworden
- 10 sep 2007
- Berichten
- 86
Ik heb een shuifschakelaar. Daaronder kun je de value zien die je schakelt.
de value wordt met deze codes in html weergegeven:
en de javascript:
NU wil ik dat aan de hand van de value de volume aangepast wordt, weet iemand hoe dit moet?
de value wordt met deze codes in html weergegeven:
HTML:
<div class="carpe_slider_display_holder" >
<input class="carpe_slider_display"
id="your_display_id"
name="your_var_name"
type="text"
from="0"
to="100"
valuecount="101"
value="0"
typelock="off" /></div>
en de javascript:
PHP:
var carpemouseover = false;
var carpeDefaultSliderLength = 100;
var carpeSliderDefaultOrientation = 'horizontal';
var carpeSliderClassName = 'carpe_slider';
var carpeSliderDisplayClassName = 'carpe_slider_display';
var carpesliders = [];
var carpedisplays = [];
var carpeslider = {};
var carpedisplay = {};
// carpeAddLoadEvent
function carpeAddLoadEvent(func)
{
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
}
else {
window.onload = function() {
oldonload();
func();
};
}
}
// carpeGetElementsByClass: Cross-browser function that returns
// an array with all elements that have a class attribute that
// contains className
function carpeGetElementsByClass(className)
{
var classElements = new Array();
var els = document.getElementsByTagName("*");
var elsLen = els.length;
var pattern = new RegExp("\\b" + className + "\\b");
for (var i = 0, j = 0; i < elsLen; i++) {
if ( pattern.test(els[i].className) ) {
classElements[j] = els[i];
j++;
}
}
return classElements;
}
// carpeLeft: Cross-browser version of "element.style.left"
// Returns or sets the horizontal position of an element.
function carpeLeft(elmnt, pos)
{
if (!(elmnt = document.getElementById(elmnt))) return 0;
if (elmnt.style && (typeof(elmnt.style.left) == 'string')) {
if (typeof(pos) == 'number') elmnt.style.left = pos + 'px';
else {
pos = parseInt(elmnt.style.left);
if (isNaN(pos)) pos = 0;
}
}
else if (elmnt.style && elmnt.style.pixelLeft) {
if (typeof(pos) == 'number') elmnt.style.pixelLeft = pos;
else pos = elmnt.style.pixelLeft;
}
return pos;
}
// carpeTop: Cross-browser version of "element.style.top"
// Returns or sets the vertical position of an element.
function carpeTop(elmnt, pos)
{
if (!(elmnt = document.getElementById(elmnt))) return 0;
if (elmnt.style && (typeof(elmnt.style.top) == 'string')) {
if (typeof(pos) == 'number') elmnt.style.top = pos + 'px';
else {
pos = parseInt(elmnt.style.top);
if (isNaN(pos)) pos = 0;
}
}
else if (elmnt.style && elmnt.style.pixelTop) {
if (typeof(pos) == 'number') elmnt.style.pixelTop = pos;
else pos = elmnt.style.pixelTop;
}
return pos;
}
// moveSlider: Handles slider and display while dragging
function moveSlider(evnt)
{
var evnt = (!evnt) ? window.event : evnt; // The mousemove event
if (carpemouseover) { // Only if slider is dragged
carpeslider.x = carpeslider.startOffsetX + evnt.screenX; // Horizontal mouse position relative to allowed slider positions
carpeslider.y = carpeslider.startOffsetY + evnt.screenY; // Horizontal mouse position relative to allowed slider positions
if (carpeslider.x > carpeslider.xMax) carpeslider.x = carpeslider.xMax; // Limit horizontal movement
if (carpeslider.x < 0) carpeslider.x = 0; // Limit horizontal movement
if (carpeslider.y > carpeslider.yMax) carpeslider.y = carpeslider.yMax; // Limit vertical movement
if (carpeslider.y < 0) carpeslider.y = 0; // Limit vertical movement
carpeLeft(carpeslider.id, carpeslider.x); // move slider to new horizontal position
carpeTop(carpeslider.id, carpeslider.y); // move slider to new vertical position
var sliderVal = carpeslider.x + carpeslider.y; // pixel value of slider regardless of orientation
var sliderPos = (carpeslider.distance / carpedisplay.valuecount) *
Math.round(carpedisplay.valuecount * sliderVal / carpeslider.distance);
var v = Math.round((sliderPos * carpeslider.scale + carpeslider.from) * // calculate display value
Math.pow(10, carpedisplay.decimals)) / Math.pow(10, carpedisplay.decimals);
carpedisplay.value = v; // put the new value in the slider display element
return false;
}
return
}
// slide: Handles the start of a slider move.
function slide(evnt)
{
if (!evnt) evnt = window.event; // Get the mouse event causing the slider activation.
carpeslider = (evnt.target) ? evnt.target : evnt.srcElement; // Get the activated slider element.
var dist = parseInt(carpeslider.getAttribute('distance')); // The allowed slider movement in pixels.
carpeslider.distance = dist ? dist : carpeDefaultSliderLength; // Deafault distance from global var.
var ori = carpeslider.getAttribute('orientation'); // Slider orientation: 'horizontal' or 'vertical'.
var orientation = ((ori == 'horizontal') || (ori == 'vertical')) ? ori : carpeSliderDefaultOrientation;
// Default orientation from global variable.
var displayId = carpeslider.getAttribute('display'); // ID of associated display element.
carpedisplay = document.getElementById(displayId); // Get the associated display element.
carpedisplay.sliderId = carpeslider.id; // Associate the display with the correct slider.
var dec = parseInt(carpedisplay.getAttribute('decimals')); // Number of decimals to be displayed.
carpedisplay.decimals = dec ? dec : 0; // Default number of decimals: 0.
var val = parseInt(carpedisplay.getAttribute('valuecount')) // Allowed number of values in the interval.
carpedisplay.valuecount = val ? val : carpeslider.distance + 1 // Default number of values: the sliding distance.
var from = parseFloat(carpedisplay.getAttribute('from')) // Min/start value for the display.
from = from ? from : 0 // Default min/start value: 0.
var to = parseFloat(carpedisplay.getAttribute('to')) // Max value for the display.
to = to ? to : carpeslider.distance // Default number of values: the sliding distance.
carpeslider.scale = (to - from) / carpeslider.distance // Slider-display scale [value-change per pixel of movement].
if (orientation == 'vertical') { // Set limits and scale for vertical sliders.
carpeslider.from = to // Invert for vertical sliders. "Higher is more."
carpeslider.xMax = 0
carpeslider.yMax = carpeslider.distance
carpeslider.scale = -carpeslider.scale // Invert scale for vertical sliders. "Higher is more."
}
else { // Set limits for horizontal sliders.
carpeslider.from = from;
carpeslider.xMax = carpeslider.distance;
carpeslider.yMax = 0;
}
carpeslider.startOffsetX = carpeLeft(carpeslider.id) - evnt.screenX; // Slider-mouse horizontal offset at start of slide.
carpeslider.startOffsetY = carpeTop(carpeslider.id) - evnt.screenY; // Slider-mouse vertical offset at start of slide.
carpemouseover = true;
document.onmousemove = moveSlider; // Start the action if the mouse is dragged.
document.onmouseup = sliderMouseUp; // Stop sliding.
return false;
}
// sliderMouseUp: Handles the mouseup event after moving a slider.
// Snaps the slider position to allowed/displayed value.
function sliderMouseUp()
{
if (carpemouseover) {
var v = (carpedisplay.value) ? carpedisplay.value : 0 // Find last display value.
var pos = (v - carpeslider.from)/(carpeslider.scale) // Calculate slider position (regardless of orientation).
if (carpeslider.yMax == 0) {
pos = (pos > carpeslider.xMax) ? carpeslider.xMax : pos;
pos = (pos < 0) ? 0 : pos;
carpeLeft(carpeslider.id, pos); // Snap horizontal slider to corresponding display position.
}
if (carpeslider.xMax == 0) {
pos = (pos > carpeslider.yMax) ? carpeslider.yMax : pos;
pos = (pos < 0) ? 0 : pos;
carpeTop(carpeslider.id, pos); // Snap vertical slider to corresponding display position.
}
if (document.removeEventListener) { // Remove event listeners from 'document' (W3C).
document.removeEventListener('mousemove', moveSlider, false);
document.removeEventListener('mouseup', sliderMouseUp, false);
}
else if (document.detachEvent) { // Remove event listeners from 'document' (IE).
document.detachEvent('onmousemove', moveSlider);
document.detachEvent('onmouseup', sliderMouseUp);
document.releaseCapture();
}
}
carpemouseover = false; // Stop the sliding.
}
function focusDisplay(evnt)
{
if (!evnt) evnt = window.event; // Get the mouse event causing the display activation.
var carpedisplay = (evnt.target) ? evnt.target : evnt.srcElement; // Get the activated display element.
var lock = carpedisplay.getAttribute('typelock'); // Is the user allowed to type into the display?
if (lock == 'on') {
carpedisplay.blur();
}
return;
}
function carpeInit() // Set up the sliders and the displays.
{
carpesliders = carpeGetElementsByClass(carpeSliderClassName) // Find the horizontal sliders.
for (var i = 0; i < carpesliders.length; i++) {
carpesliders[i].onmousedown = slide; // Attach event listener.
}
carpedisplays = carpeGetElementsByClass(carpeSliderDisplayClassName) // Find the displays.
for (var i = 0; i < carpedisplays.length; i++) {
carpedisplays[i].value = carpedisplays[i].defaultValue; // Resets display on page reload.
carpedisplays[i].onfocus = focusDisplay; // Attach event listener.
}
}
carpeAddLoadEvent(carpeInit);
NU wil ik dat aan de hand van de value de volume aangepast wordt, weet iemand hoe dit moet?