mirror of
https://github.com/flynx/ImageGrid.git
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594 lines
14 KiB
JavaScript
Executable File
594 lines
14 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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define(function(require){ var module = {}
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console.log('>>> viewer')
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//var DEBUG = DEBUG != null ? DEBUG : true
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var actions = require('lib/actions')
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var data = require('data')
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var ribbons = require('ribbons')
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/*********************************************************************/
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//
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// XXX Tasks to accomplish here:
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// - life-cycle actions/events
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// - setup
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// - reset
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// - "features" and the mechanism to turn them on or off (action-sets)
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//
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//
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var Client =
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module.Client =
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actions.Actions({
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// XXX should this be here???
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config: {
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'steps-to-change-direction': 3,
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},
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// basic state...
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// NOTE: the setters in the following use the appropriate actions
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// so to avoid recursion do not use these in the specific
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// actions...
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// Base ribbon...
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get base(){
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return this.data == null ? null : this.data.base
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},
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set base(value){
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this.setBaseRibbon(value)
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},
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// Current image...
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get current(){
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return this.data == null ? null : this.data.current
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},
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set current(value){
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this.focusImage(value)
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},
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// Current ribbon...
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get currentRibbon(){
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return this.data == null ? null : this.data.getRibbon()
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},
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set currentRibbon(value){
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this.focusRibbon(value)
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},
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// Default direction...
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//
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// This can be 'left' or 'right', other values are ignored.
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//
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// The system has inertial direction change, after >N steps of
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// movement in one direction it takes N steps to reverse the default
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// direction.
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// The number of steps (N) is set in:
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// .config['steps-to-change-direction']
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//
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// NOTE: to force direction change append a '!' to the direction.
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// e.g. X.direction = 'left!'
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get direction(){
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return this._direction >= 0 ? 'right'
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: this._direction < 0 ? 'left'
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: 'right'
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},
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set direction(value){
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// force direction change...
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if(value.slice(-1) == '!'){
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this._direction = value == 'left!' ? -1
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: value == 'right!' ? 0
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: this._direction
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// 'update' direction...
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} else {
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value = value == 'left' ? -1
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: value == 'right' ? 1
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: 0
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var d = (this._direction || 0) + value
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var s = this.config['steps-to-change-direction']
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s = s < 1 ? 1 : s
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// cap the direction value between -s and s-1...
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// NOTE: we use s-1 instead of s as 0/null is a positive
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// direction...
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d = d >= s ? s-1 : d
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d = d < -s ? -s : d
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this._direction = d
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}
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},
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// basic life-cycle actions...
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//
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ready: [
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function(){
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// XXX setup empty state...
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}],
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load: [
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function(d){
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this.data = data.Data(d.data)
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}],
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clear: [
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function(){
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delete this.data
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}],
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// basic navigation...
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//
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focusImage: ['Focus image',
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function(img){
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this.data.focusImage(img)
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}],
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focusRibbon: ['Focus Ribbon',
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function(target){
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var data = this.data
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var r = data.getRibbon(target)
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if(r == null){
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return
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}
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var c = data.getRibbonOrder()
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var i = data.getRibbonOrder(r)
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// NOTE: we are not changing the direction here based on
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// this.direction as swap will confuse the user...
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var direction = c < i ? 'before' : 'after'
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var t = data.getImage(r, direction)
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// if there are no images in the requied direction, try the
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// other way...
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t = t == null ? data.getImage(r, direction == 'before' ? 'after' : 'before') : t
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this.focusImage(t, r)
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}],
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setBaseRibbon: ['',
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function(target){ this.data.setBase(target) }],
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// shorthands for .focusImage(..) and .focusRibbon(..)...
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firstImage: ['Focus first image in current ribbon',
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function(){ this.focusImage('first') }],
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lastImage: ['Focus last image in current ribbon',
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function(){ this.focusImage('last') }],
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prevImage: ['Focus previous image',
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function(){
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// keep track of traverse direction...
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this.direction = 'left'
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this.focusImage('prev')
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}],
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nextImage: ['Focus next image',
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function(){
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// keep track of traverse direction...
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this.direction = 'right'
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this.focusImage('next')
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}],
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firstRibbon: ['Focus previous ribbon',
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function(){ this.focusRibbon('fisrt') }],
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lastRibbon: ['Focus next ribbon',
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function(){ this.focusRibbon('last') }],
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// XXX check that going up/down must be stable and not drift to
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// adjacent images...
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prevRibbon: ['Focus previous ribbon',
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function(){ this.focusRibbon('before') }],
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nextRibbon: ['Focus next ribbon',
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function(){ this.focusRibbon('after') }],
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// basic ribbon editing...
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//
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// NOTE: for all of these, current/ribbon image is a default...
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//
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// XXX move this out to a mixin...
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shiftImageUp: ['Shift image up',
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'If implicitly shifting current image (i.e. no arguments), focus '
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+'will shift to the next or previous image in the current '
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+'ribbon depending on current direction.',
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function(target){
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// stop transitions...
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this.ribbons.preventTransitions()
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// by default we need to update the current position...
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if(target == null){
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var direction = this.direction == 'right' ? 'next' : 'prev'
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var cur = this.data.getImage()
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var next = this.data.getImage(direction)
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next = next == null
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? this.data.getImage(direction == 'next' ? 'prev' : 'next')
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: next
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this.data.shiftImageUp(cur)
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this.focusImage(next)
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// if a specific target is given, just shift it...
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} else {
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this.data.shiftImageUp(target)
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}
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// restore transitions...
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return function(){
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this.ribbons.restoreTransitions()
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}
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}],
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shiftImageDown: ['Shift image down',
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'If implicitly shifting current image (i.e. no arguments), focus '
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+'will shift to the next or previous image in the current '
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+'ribbon depending on current direction.',
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function(target){
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// stop transitions...
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this.ribbons.preventTransitions()
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// by default we need to update the current position...
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if(target == null){
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var direction = this.direction == 'right' ? 'next' : 'prev'
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var cur = this.data.getImage()
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var next = this.data.getImage(direction)
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next = next == null
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? this.data.getImage(direction == 'next' ? 'prev' : 'next')
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: next
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this.data.shiftImageDown(cur)
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this.focusImage(next)
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// if a specific target is given, just shift it...
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} else {
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this.data.shiftImageDown(target)
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}
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// restore transitions...
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return function(){
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this.ribbons.restoreTransitions()
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}
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}],
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shiftImageUpNewRibbon: ['Shift image up to a new empty ribbon',
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function(target){
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this.data.newRibbon(target)
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this.shiftImageUp(target)
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}],
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shiftImageDownNewRibbon: ['Shift image down to a new empty ribbon',
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function(target){
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this.data.newRibbon(target, 'below')
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this.shiftImageDown(target)
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}],
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shiftImageLeft: ['Shift image left',
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function(target){
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if(target == null){
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this.direction = 'left'
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}
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this.data.shiftImageLeft(target)
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this.focusImage()
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}],
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shiftImageRight: ['Shift image right',
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function(target){
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if(target == null){
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this.direction = 'right'
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}
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this.data.shiftImageRight(target)
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this.focusImage()
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}],
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shiftRibbonUp: ['Shift ribbon up',
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function(target){
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this.data.shiftRibbonUp(target)
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// XXX is this the right way to go/???
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this.focusImage()
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}],
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shiftRibbonDown: ['Shift ribbon down',
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function(target){
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this.data.shiftRibbonDown(target)
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// XXX is this the right way to go/???
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this.focusImage()
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}],
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// XXX
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sortImages: [
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function(){ }],
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reverseImages: [
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function(){ this.data.reverseImages() }],
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// basic image editing...
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//
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// XXX
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rotateCW: [
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function(){ }],
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rotateCCW: [
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function(){ }],
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flipVertical: [
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function(){ }],
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flipHorizontal: [
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function(){ }],
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// crop...
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//
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// XXX
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})
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// XXX do partial loading...
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var Viewer =
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module.Viewer =
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actions.Actions(Client, {
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ready: [
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function(){
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// XXX setup empty state...
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}],
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load: [
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function(data){
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// recycle the viewer if one is not given specifically...
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var viewer = data.viewer
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viewer = viewer == null && this.ribbons != null
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? this.ribbons.viewer
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: viewer
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// XXX do we need to recycle the images???
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this.ribbons = ribbons.Ribbons(viewer, data.images)
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return function(){
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// XXX do a partial load...
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// XXX
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this.ribbons.updateData(this.data)
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this.focusImage()
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}
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}],
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reload: [
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function(){
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this.ribbons.updateData(this.data)
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this.focusImage()
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}],
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clear: [
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// XXX do we need to delete the ribbons???
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function(){
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this.ribbons.clear()
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delete this.ribbons
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}],
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focusImage: [
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// XXX skip invisible ribbons (???)
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// XXX load data chunks...
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function(target){
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var ribbons = this.ribbons
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var data = this.data
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if(data != null){
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var gid = data.getImage(target)
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gid = gid == null ? data.getImage('current') : gid
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// XXX see if we need to load a new data set...
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// XXX
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target = ribbons.focusImage(gid)
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} else {
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target = ribbons.focusImage(target)
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var gid = ribbons.getElemGID(target)
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}
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// align current ribbon...
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ribbons
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.centerRibbon(target)
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.centerImage(target)
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// align other ribbons...
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if(data != null){
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var ribbon = data.getRibbon(gid)
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for(var r in data.ribbons){
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// skip the current ribbon...
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if(r == ribbon){
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continue
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}
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// XXX skip off-screen ribbons...
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// XXX
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// center...
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// XXX is there a 'last' special case here???
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var t = data.getImage(gid, r)
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if(t == null){
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var f = data.getImage('first', r)
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// nothing found -- empty ribbon?
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if(f == null){
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continue
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}
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ribbons.centerImage(data.getImage('first', r), 'before')
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} else {
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ribbons.centerImage(t, 'after')
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}
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}
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}
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}],
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setBaseRibbon: ['',
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function(target){
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var r = this.data.getRibbon(target)
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r = r == null ? this.ribbons.getRibbon(target) : r
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this.ribbons.setBaseRibbon(r)
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}],
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// XXX test...
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prevScreen: ['Focus previous image one screen width away',
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function(){
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var s = Math.floor(this.ribbons.getScreenWidthImages())
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this.focusImage(this.data.getImage('current', -s))
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}],
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// XXX test...
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nextScreen: ['Focus next image one screen width away',
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function(){
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var s = Math.floor(this.ribbons.getScreenWidthImages())
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this.focusImage(this.data.getImage('current', s))
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}],
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// zooming...
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// XXX
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zoomIn: ['Zoom in',
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function(){ }],
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zoomOut: ['Zoom out',
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function(){ }],
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fitOrig: ['Fit to original scale',
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function(){
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//this.ribbons.preventTransitions()
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this.ribbons.setScale(1)
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this.ribbons.updateImage('*')
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//this.focusImage()
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//this.ribbons.restoreTransitions()
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}],
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// NOTE: if this gets a count argument it will fit count images,
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// default is one.
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// XXX animation broken for this...
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fitImage: ['Fit image',
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function(count){
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//this.ribbons.preventTransitions()
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this.ribbons.fitImage(count)
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this.ribbons.updateImage('*')
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//this.focusImage()
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//this.ribbons.restoreTransitions()
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}],
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// XXX should these be relative to screen rather than actual image counts?
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fitTwo: ['Fit two images', function(){ this.fitImage(2) }],
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fitThree: ['Fit three images', function(){ this.fitImage(3) }],
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fitFour: ['Fit four images', function(){ this.fitImage(4) }],
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fitFive: ['Fit five images', function(){ this.fitImage(5) }],
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fitSix: ['Fit six images', function(){ this.fitImage(6) }],
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fitSeven: ['Fit seven images', function(){ this.fitImage(7) }],
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fitEight: ['Fit eight images', function(){ this.fitImage(8) }],
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fitNine: ['Fit nine images', function(){ this.fitImage(9) }],
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// XXX
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fitMax: ['Fit the maximum number of images',
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function(){ }],
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// XXX
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fitSmall: ['Show small image',
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function(){ }],
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// XXX
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fitNormal: ['Show normal image',
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function(){ }],
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// XXX
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fitScreen: ['Fit image to screen',
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function(){ }],
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// XXX
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shiftImageUp: [
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function(target){
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return function(){
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// XXX this is cheating...
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this.reload()
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}
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}],
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shiftImageDown: [
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function(target){
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return function(){
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// XXX this is cheating...
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this.reload()
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}
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}],
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// NOTE: .shiftImageDownNewRibbon(..) and .shiftImageUpNewRibbon(..)
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// are not needed here when doing a reload on vertical
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// shifting...
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shiftImageLeft: [
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function(target){
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this.ribbons.placeImage(target, -1)
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}],
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shiftImageRight: [
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function(target){
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this.ribbons.placeImage(target, 1)
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}],
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shiftRibbonUp: [
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function(target){
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// XXX
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}],
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shiftRibbonDown: [
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function(target){
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// XXX
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}],
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reverseImages: [
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function(){
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this.ribbons.preventTransitions()
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return function(){
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this.reload()
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this.ribbons.restoreTransitions()
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}
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}],
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// basic image editing...
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//
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// XXX
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rotateCW: [
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function(){ }],
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rotateCCW: [
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function(){ }],
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flipVertical: [
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function(){ }],
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flipHorizontal: [
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function(){ }],
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})
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/*********************************************************************/
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// XXX do a simple feature framework...
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// ...need something like:
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// Features(['feature_a', 'feature_b'], action).setup()
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|
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var Animation =
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module.Animation = {
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tag: 'animation_handler',
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setup: function(actions){
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var animate = function(target){
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var s = this.ribbons.makeShadow(target, true)
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return function(){ s() }
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}
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var noanimate = function(target){
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var s = this.ribbons.makeShadow(target)
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return function(){ s() }
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}
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var tag = this.tag
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return actions
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.on('shiftImageUp.pre', tag, animate)
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.on('shiftImageDown.pre', tag, animate)
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.on('shiftImageLeft.pre', tag, noanimate)
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.on('shiftImageRight.pre', tag, noanimate)
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},
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remove: function(actions){
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return actions.off('*', this.tag)
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}
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}
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/**********************************************************************
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* vim:set ts=4 sw=4 : */
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return module })
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