1 /*global View render_template panels */
2 var ImageGalleryView = View.extend({
3 _className: 'ImageGalleryView',
8 template: 'image-gallery-view-template',
10 init: function(element, model, parent, template)
12 console.log("init for gallery");
13 var submodel = model.contentModels['gallery'];
14 this._super(element, submodel, template);
17 console.log("gallery model", this.model);
20 .addObserver(this, 'data', this.modelDataChanged.bind(this))
21 .addObserver(this, 'state', this.modelStateChanged.bind(this));
23 //$('.image-gallery-view', this.element).html(this.model.get('data'));
24 this.modelStateChanged('state', this.model.get('state'));
28 modelDataChanged: function(property, value)
30 console.log(this.model.get('state'), value, value.length);
31 if ((this.model.get('state') == 'synced') && (value.length == 0)) {
33 this.render('image-gallery-empty-template');
36 this.gotoPage(this.currentPage);
40 gotoPage: function(index)
45 var n = this.$pages.length;
46 if (index >= n) index = n-1;
48 if( (this.currentPage == index) )
51 var cpage = this.$currentPage();
54 var offset = this.pageViewOffset(cpage);
55 this.cleanPage(cpage);
58 this.currentPage = index;
60 cpage = this.$currentPage()
61 this.renderImage(cpage);
64 cpage.css({top: offset.y, left: offset.x});
68 $('img', cpage).bind('load', function() {
70 self.setPageViewOffset(cpage, offset);
75 if(this.currentPage == n-1)
76 this.$nextButton.attr('disabled', 'disabled');
78 this.$nextButton.removeAttr('disabled');
80 if(this.currentPage == 0)
81 this.$prevButton.attr('disabled', 'disabled');
83 this.$prevButton.removeAttr('disabled');
85 this.$pageInput.val( (this.currentPage+1) );
88 reload: function() {},
90 modelStateChanged: function(property, value) {
91 if (value == 'loading') {
92 this.freeze('Ładowanie...');
94 if ((value == 'synced') && (this.model.get('data').length == 0)) {
95 this.render('image-gallery-empty-template');
101 $currentPage: function() {
102 if(this.currentPage >= 0 && this.currentPage < this.$pages.length)
103 return $(this.$pages[this.currentPage]);
108 cleanPage: function($page) {
110 $('img', $page).unbind();
113 this.setPageViewOffset($page, {x:0, y:0});
116 pageDragStart: function(event)
118 this.dragStart = {x: event.clientX, y: event.clientY};
119 $(window).bind('mousemove.imagedrag', this.pageDrag.bind(this));
120 $(window).bind('mouseup.imagedrag', this.pageDragStop.bind(this));
122 this.$currentPage().css('cursor', 'move');
127 pageDrag: function(event)
129 if(!this.dragStart) return;
132 x: this.dragStart.x - event.clientX,
133 y: this.dragStart.y - event.clientY };
135 var offset = this.pageViewOffset( $(this.$pages[this.currentPage]) );
138 this.setPageViewOffset( $(this.$pages[this.currentPage]), offset);
140 this.dragStart = {x: event.clientX, y: event.clientY };
144 pageDragStop: function(event) {
145 this.$currentPage().css('cursor', 'auto');
147 this.dragStart = undefined;
148 $(window).unbind('mousemove.imagedrag');
149 $(window).unbind('mouseup.imagedrag');
154 pageViewOffset: function($page) {
155 var left = parseInt($page.css('left'));
156 var top = parseInt($page.css('top'));
158 return {x: left, y: top};
161 setPageViewOffset: function($page, offset) {
162 // check if the image will be actually visible
167 var vp_width = this.$pageListRoot.width();
168 var vp_height = this.$pageListRoot.height();
170 var width = $page.outerWidth();
171 var height = $page.outerHeight();
173 // console.log(offset, vp_width, vp_height, width, height);
174 if( offset.x+width-MARGIN < 0 ) {
175 // console.log('too much on the left', offset.x, -width)
176 offset.x = -width+MARGIN;
179 // too much on the right
180 if( offset.x > vp_width-MARGIN) {
181 offset.x = vp_width-MARGIN;
182 // console.log('too much on the right', offset.x, vp_width, width)
185 if( offset.y+height-MARGIN < 0)
186 offset.y = -height+MARGIN;
188 if( offset.y > vp_height-MARGIN)
189 offset.y = vp_height-MARGIN;
191 $page.css({left: offset.x, top: offset.y});
195 this.model.load(true);
198 renderImage: function(target)
200 var source = target.attr('ui:model');
201 var orig_width = parseInt(target.attr('ui:width'));
202 var orig_height = parseInt(target.attr('ui:height'));
204 target.html('<img src="' + source
205 + '" width="' + Math.floor(orig_width * this.pageZoom)
206 + '" height="' + Math.floor(orig_height * this.pageZoom)
211 'user-select': 'none',
212 '-webkit-user-select': 'none',
213 '-khtml-user-select': 'none',
214 '-moz-user-select': 'none'
216 attr('unselectable', 'on').
217 mousedown(this.pageDragStart.bind(this));
220 render: function(template)
222 if(!this.model) return;
224 $('.choose-gallery-button', this.element).unbind();
226 /* first unbind all */
227 if(this.$nextButton) this.$nextButton.unbind();
228 if(this.$prevButton) this.$prevButton.unbind();
229 if(this.$jumpButton) this.$jumpButton.unbind();
230 if(this.$pageInput) this.$pageInput.unbind();
232 if(this.$zoomInButton) this.$zoomInButton.unbind();
233 if(this.$zoomOutButton) this.$zoomOutButton.unbind();
234 if(this.$zoomResetButton) this.$zoomResetButton.unbind();
240 /* fetch important parts */
241 this.$pageListRoot = $('.image-gallery-page-list', this.element);
242 this.$pages = $('.image-gallery-page-container', this.$pageListRoot);
244 this.$nextButton = $('.image-gallery-next-button', this.element);
245 this.$prevButton = $('.image-gallery-prev-button', this.element);
246 this.$pageInput = $('.image-gallery-current-page', this.element);
248 // this.$zoomSelect = $('.image-gallery-current-zoom', this.element);
249 this.$zoomInButton = $('.image-gallery-zoom-in', this.element);
250 this.$zoomOutButton = $('.image-gallery-zoom-out', this.element);
251 this.$zoomResetButton = $('.image-gallery-zoom-reset', this.element);
254 this.$nextButton.click( this.nextPage.bind(this) );
255 this.$prevButton.click( this.prevPage.bind(this) );
256 this.$pageInput.change( this.jumpToPage.bind(this) );
258 // this.$zoomSelect.change( this.zoomChanged.bind(this) );
259 this.$zoomInButton.click( this.zoomInOneStep.bind(this) );
260 this.$zoomOutButton.click( this.zoomOutOneStep.bind(this) );
261 this.$zoomResetButton.click( this.zoomReset.bind(this) );
263 this.gotoPage(this.currentPage);
264 this.changePageZoom(this.pageZoom);
266 this._super(template);
269 $('.choose-gallery-button', self.element).click(function() {
270 console.log('CLICK CLICK')
271 self.model.setGallery($('#id_subpath', self.element).val());
276 jumpToPage: function() {
277 this.gotoPage(parseInt(this.$pageInput.val())-1);
280 nextPage: function() {
281 this.gotoPage(this.currentPage + 1);
284 prevPage: function() {
285 this.gotoPage(this.currentPage - 1);
288 zoomReset: function() {
289 this.changePageZoom(1.0);
292 zoomInOneStep: function() {
293 var zoom = this.pageZoom + 0.1;
294 if(zoom > 3.0) zoom = 3.0;
295 this.changePageZoom(zoom);
298 zoomOutOneStep: function() {
299 var zoom = this.pageZoom - 0.1;
300 if(zoom < 0.3) zoom = 0.3;
301 this.changePageZoom(zoom);
304 changePageZoom: function(value) {
305 var current = this.$currentPage();
309 var alpha = value/this.pageZoom;
310 this.pageZoom = value;
312 var nwidth = current.attr('ui:width') * this.pageZoom;
313 var nheight = current.attr('ui:height') * this.pageZoom;
314 var off_top = parseInt(current.css('top'));
315 var off_left = parseInt(current.css('left'));
317 var vpx = this.$pageListRoot.width() * 0.5;
318 var vpy = this.$pageListRoot.height() * 0.5;
320 var new_off_left = vpx - alpha*(vpx-off_left);
321 var new_off_top = vpy - alpha*(vpy-off_top);
323 $('img', current).attr('width', nwidth);
324 $('img', current).attr('height', nheight);
326 this.setPageViewOffset(current, {
327 y: new_off_top, x: new_off_left
330 // this.$zoomSelect.val(this.pageZoom);
331 // console.log('Zoom is now', this.pageZoom);
336 console.log("Disposing gallery.");
337 this.model.removeObserver(this);
343 panels['gallery'] = ImageGalleryView;