Jcrop » Tutorials » Hello World






jQuery(function($){

// How easy is this??
$('#target').Jcrop();

});

Jcrop » Tutorials » Event Handler





jQuery(function($){
$('#target').Jcrop({
onChange: showCoords,
onSelect: showCoords,
onRelease: clearCoords
});
});
// Simple event handler, called from onChange and onSelect
// event handlers, as per the Jcrop invocation above
function showCoords(c)
{
$('#x1').val(c.x);
$('#y1').val(c.y);
$('#x2').val(c.x2);
$('#y2').val(c.y2);
$('#w').val(c.w);
$('#h').val(c.h);
};
function clearCoords()
{
$('#coords input').val('');
};

Jcrop » Tutorials » Animations / Transitions







jQuery(function($){
var jcrop_api;
$('#target').Jcrop({
bgFade: true,
bgOpacity: .3,
setSelect: [ 60, 70, 540, 330 ]
},function(){
jcrop_api = this;
});
$('#fadetog').change(function(){
jcrop_api.setOptions({
bgFade: this.checked
});
}).attr('checked','checked');
$('#shadetog').change(function(){
if (this.checked) $('#shadetxt').slideDown();
else $('#shadetxt').slideUp();
jcrop_api.setOptions({
shade: this.checked
});
}).attr('checked',false);
// Define page sections
var sections = {
anim_buttons: 'Animate Selection',
bgo_buttons: 'Change bgOpacity',
bgc_buttons: 'Change bgColor'
};
// Define animation buttons
var ac = {
anim1: [217,122,382,284],
anim2: [20,20,580,380],
anim3: [24,24,176,376],
anim4: [347,165,550,355],
anim5: [136,55,472,183]
};
// Define bgOpacity buttons
var bgo = {
Low: .2,
Mid: .5,
High: .8,
Full: 1
};
// Define bgColor buttons
var bgc = {
Red: '#900',
Blue: '#4BB6F0',
Yellow: '#F0B207',
Green: '#46B81C',
White: 'white',
Black: 'black'
};
// Create fieldset targets for buttons
for(i in sections)
insertSection(i,sections[i]);
// Create animation buttons
for(i in ac) {
$('#anim_buttons').append(
$('').append(i).click(animHandler(ac[i])), ' '
);
}
// Create bgOpacity buttons
for(i in bgo) {
$('#bgo_buttons').append(
$('').append(i).click(setoptHandler('bgOpacity',bgo[i])), ' '
);
}
// Create bgColor buttons
for(i in bgc) {
$('#bgc_buttons').append(
$('').append(i).css({
backgroundColor: bgc[i],
color: ((i == 'Black') || (i == 'Red'))?'white':'black'
}).click(setoptHandler('bgColor',bgc[i])), ' '
);
}
// Function to insert named sections into interface
function insertSection(k,v) {
$('#interface').append(
$('').attr('id',k).append(
$('').append(v)
)
);
};
// Handler for option-setting buttons
function setoptHandler(k,v) {
return function() {
var opt = { };
opt[k] = v;
jcrop_api.setOptions(opt);
return false;
};
};
// Handler for animation buttons
function animHandler(v) {
return function() {
jcrop_api.animateTo(v);
return false;
};
};
$('#anim_buttons').append(
$('').append('Bye!').click(function(){
jcrop_api.animateTo(
[300,200,300,200],
function(){ this.release(); }
);
return false;
})
);
$('#interface').show();
});

Jcrop » Tutorials » API Demo





.optdual { position: relative; }
.optdual .offset { position: absolute; left: 18em; }
.optlist label { width: 16em; display: block; }
#dl_links { margin-top: .5em; }


jQuery(function($){
// The variable jcrop_api will hold a reference to the
// Jcrop API once Jcrop is instantiated.
var jcrop_api;
// In this example, since Jcrop may be attached or detached
// at the whim of the user, I've wrapped the call into a function
initJcrop();
// The function is pretty simple
function initJcrop()//{{{
{
// Hide any interface elements that require Jcrop
// (This is for the local user interface portion.)
$('.requiresjcrop').hide();
// Invoke Jcrop in typical fashion
$('#target').Jcrop({
onRelease: releaseCheck
},function(){
jcrop_api = this;
jcrop_api.animateTo([100,100,400,300]);
// Setup and dipslay the interface for "enabled"
$('#can_click,#can_move,#can_size').attr('checked','checked');
$('#ar_lock,#size_lock,#bg_swap').attr('checked',false);
$('.requiresjcrop').show();
});
};
//}}}
// Use the API to find cropping dimensions
// Then generate a random selection
// This function is used by setSelect and animateTo buttons
// Mainly for demonstration purposes
function getRandom() {
var dim = jcrop_api.getBounds();
return [
Math.round(Math.random() * dim[0]),
Math.round(Math.random() * dim[1]),
Math.round(Math.random() * dim[0]),
Math.round(Math.random() * dim[1])
];
};
// This function is bound to the onRelease handler...
// In certain circumstances (such as if you set minSize
// and aspectRatio together), you can inadvertently lose
// the selection. This callback re-enables creating selections
// in such a case. Although the need to do this is based on a
// buggy behavior, it's recommended that you in some way trap
// the onRelease callback if you use allowSelect: false
function releaseCheck()
{
jcrop_api.setOptions({ allowSelect: true });
$('#can_click').attr('checked',false);
};
// Attach interface buttons
// This may appear to be a lot of code but it's simple stuff
$('#setSelect').click(function(e) {
// Sets a random selection
jcrop_api.setSelect(getRandom());
});
$('#animateTo').click(function(e) {
// Animates to a random selection
jcrop_api.animateTo(getRandom());
});
$('#release').click(function(e) {
// Release method clears the selection
jcrop_api.release();
});
$('#disable').click(function(e) {
// Disable Jcrop instance
jcrop_api.disable();
// Update the interface to reflect disabled state
$('#enable').show();
$('.requiresjcrop').hide();
});
$('#enable').click(function(e) {
// Re-enable Jcrop instance
jcrop_api.enable();
// Update the interface to reflect enabled state
$('#enable').hide();
$('.requiresjcrop').show();
});
$('#rehook').click(function(e) {
// This button is visible when Jcrop has been destroyed
// It performs the re-attachment and updates the UI
$('#rehook,#enable').hide();
initJcrop();
$('#unhook,.requiresjcrop').show();
return false;
});
$('#unhook').click(function(e) {
// Destroy Jcrop widget, restore original state
jcrop_api.destroy();
// Update the interface to reflect un-attached state
$('#unhook,#enable,.requiresjcrop').hide();
$('#rehook').show();
return false;
});
// Hook up the three image-swapping buttons
$('#img1').click(function(e) {
jcrop_api.setImage('demo_files/sago.jpg');
jcrop_api.setOptions({ bgOpacity: .6 });
return false;
});
$('#img2').click(function(e) {
jcrop_api.setImage('demo_files/pool.jpg');
jcrop_api.setOptions({ bgOpacity: .6 });
return false;
});
$('#img3').click(function(e) {
jcrop_api.setImage('demo_files/sago.jpg',function(){
this.setOptions({
bgOpacity: 1,
outerImage: 'demo_files/sagomod.jpg'
});
this.animateTo(getRandom());
});
return false;
});
// The checkboxes simply set options based on it's checked value
// Options are changed by passing a new options object
// Also, to prevent strange behavior, they are initially checked
// This matches the default initial state of Jcrop
$('#can_click').change(function(e) {
jcrop_api.setOptions({ allowSelect: !!this.checked });
jcrop_api.focus();
});
$('#can_move').change(function(e) {
jcrop_api.setOptions({ allowMove: !!this.checked });
jcrop_api.focus();
});
$('#can_size').change(function(e) {
jcrop_api.setOptions({ allowResize: !!this.checked });
jcrop_api.focus();
});
$('#ar_lock').change(function(e) {
jcrop_api.setOptions(this.checked?
{ aspectRatio: 4/3 }: { aspectRatio: 0 });
jcrop_api.focus();
});
$('#size_lock').change(function(e) {
jcrop_api.setOptions(this.checked? {
minSize: [ 80, 80 ],
maxSize: [ 350, 350 ]
}: {
minSize: [ 0, 0 ],
maxSize: [ 0, 0 ]
});
jcrop_api.focus();
});
});