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Code Issues Projects Releases Wiki Activity

Better next/previous support (m2)

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This commit is contained in:
Ian Gilman 2015-01-09 15:11:11 -08:00
parent a470d10f4d
commit c1d93acb27
2 changed files with 70 additions and 25 deletions
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6
test/demo/m2/README.md
View File

@ -1,7 +1,8 @@
# To Do
* Next/previous in scroll mode
* Detect which page you're on in scroll mode (when switching to other modes)
* Real book
* Make sure adjacent pages aren't visible
* Thumbs hover and active state (SVG overlay?)
* Constraints
* Thumbs: no zoom, no pan
* Scroll: can't zoom out much, can't pan up and down
@ -9,4 +10,3 @@
* Resize on window resize
* When going to thumbs, scroll to the proper part of the page
* Show/hide pages?
* Arrow keys

89
test/demo/m2/js/main.js
View File

@ -59,17 +59,20 @@
}
var pos = self.viewer.viewport.pointFromPixel(event.position);
var count = self.viewer.world.getItemCount();
var item, box;
var result = self.hitTest(pos);
if (result) {
self.setMode('page', result.index);
}
});
for (var i = 0; i < count; i++) {
item = self.viewer.world.getItemAt(i);
box = item.getBounds();
if (pos.x > box.x && pos.y > box.y && pos.x < box.x + box.width &&
pos.y < box.y + box.height) {
self.setMode('page', i);
break;
}
this.viewer.addHandler('pan', function(event) {
if (self.mode !== 'scroll') {
return;
}
var result = self.hitTest(event.center);
if (result) {
self.page = result.index;
}
});
@ -80,31 +83,73 @@
});
$('.next').click(function() {
var page = self.page + (self.mode === 'book' ? 2 : 1);
if (self.mode === 'book' && page % 2 === 0 && page !== 0) {
page --;
}
self.goToPage(page);
self.next();
});
$('.previous').click(function() {
var page = self.page - (self.mode === 'book' ? 2 : 1);
if (self.mode === 'book' && page % 2 === 0 && page !== 0) {
page --;
self.previous();
});
$(window).keyup(function(event) {
if (self.mode === 'thumbs') {
return;
}
self.goToPage(page);
if (event.which === 39) { // Right arrow
self.next();
} else if (event.which === 37) { // Left arrow
self.previous();
}
});
this.update();
},
// ----------
next: function() {
var page = this.page + (this.mode === 'book' ? 2 : 1);
if (this.mode === 'book' && page % 2 === 0 && page !== 0) {
page --;
}
this.goToPage(page);
},
// ----------
previous: function() {
var page = this.page - (this.mode === 'book' ? 2 : 1);
if (this.mode === 'book' && page % 2 === 0 && page !== 0) {
page --;
}
this.goToPage(page);
},
// ----------
hitTest: function(pos) {
var count = this.viewer.world.getItemCount();
var item, box;
for (var i = 0; i < count; i++) {
item = this.viewer.world.getItemAt(i);
box = item.getBounds();
if (pos.x > box.x && pos.y > box.y && pos.x < box.x + box.width &&
pos.y < box.y + box.height) {
return {
item: item,
index: i
};
}
}
return null;
},
// ----------
update: function() {
var self = this;
$('.nav').toggle(this.mode === 'book' || this.mode === 'page');
$('.nav').toggle(this.mode === 'scroll' || this.mode === 'book' || this.mode === 'page');
$('.previous').toggleClass('hidden', this.page <= 0);
$('.next').toggleClass('hidden', this.page >= this.viewer.world.getItemCount() - 1);
@ -227,7 +272,7 @@
if (this.mode === 'scroll') {
if (this.page === 0) {
x = -this.pageBuffer;
x = bounds.x - this.pageBuffer;
width = height * (viewerWidth / viewerHeight);
} else if (this.page === this.viewer.world.getItemCount() - 1) {
width = height * (viewerWidth / viewerHeight);