- $.widget('wl.pictureviewer', {
-
- options: {
- steps: 6, // steps of zoom
- max: -1, // max zoom in percent
- plus_button: undefined,
- minus_button: undefined,
- height: 500, // height to scale to initially
- },
-
-
- _create: function() {
- var self = this;
- /* Calibrate */
- self._zoom = 0;
-
- // the initial thumbnailed picture
-
-
- var img = self.element.find('img.initial').get(0);
-
- self.initial_size = [
- img.naturalWidth,
- img.naturalHeight
- ];
-
- self.element.width(self.initial_size[0]);
- self.element.height(self.initial_size[1]);
-
- self.initial_position = self.element.offset();
-
- var original = self.element.find('img.original').get(0);
- self._original = false;
-
- if (self.options.max <= 0) {
- self.options.max = original.naturalWidth
- * 100 / self.initial_size[0];
- }
-
- self.element.css({
- 'margin': 0,
- });
-
- self.element.offset(self.initial_position);
- self.element.draggable({containment:"parent"});
-
- if (self.options.plus_button)
- self.options.plus_button.click(
- function(ev) { self.zoom(1); });
- if (self.options.minus_button)
- self.options.minus_button.click(
- function(ev) { self.zoom(-1); });
-
- self.options.areas_links.hover(function() {
- $this = $(this);
- var coords = $this.data("coords");
- this._picture_mark = self.createMark({
- label: $this.text(),
- coords: coords,
- });
- }, function() {
- $(this._picture_mark).remove();
- this._picture_mark = undefined;
- });
- return self;
- },
-
- natural_size: function() {
- var img = this.element.find('img').get(0);
- return [ img.naturalWidth, img.naturalHeight ]
- },
-
- currentZoom: function() { return this._zoom; },
-
- initOriginal: function() {
- if (!this._original) {
- this.element.find("img.initial").remove();
- this.element.find("img.loading").removeClass("loading");
- this._original = true;
- }
-
- },
-
- zoom: function(steps) {
- this.initOriginal();
- var t = this._zoom + steps;
- return this.zoomTo(t);
- },
-
- zoomForStep: function(step) {
- // 0 => initial
- // max_step-1 => max %
- return 100 + (this.options.max - 100) / this.options.steps * step
- },
-
- zoomTo: function(level) {
- if (level < 0 || level > this.options.steps)
- return;
- var ratio = this.zoomForStep(level) / 100;
- var new_width = ratio * this.initial_size[0];
- var new_height = ratio * this.initial_size[1];
- var target = {
- 'width': new_width,
- 'left': Math.max(0,
- this.initial_position.left
- - (new_width - this.initial_size[0])/2),
- 'top': Math.max(0,
- this.initial_position.top
- - (new_height - this.initial_size[1])/2),
- };
-
- this._zoom = level;
- this.element.animate(target, 200); // default duration=400
- },
-
- allowedPosition: function(off) {
- var x = undefined, fix_x = undefined;
- var y = undefined, fix_y = undefined;
- var w = this.element.width();
- var h = this.element.height();
- var cw = $(window).width();
- var ch = $(window).height();
- var off = off || this.element.offset();
-
- if (w <= cw) {
- var x = off.left;
- if (x < 0)
- fix_x = 0;
- if (x + w > cw)
- fix_x = cw - w;
- } else {
- if (x > 0)
- fix_x = 0;
- if (x + w < cw)
- fix_x = cw - w;
- }
-
- if (h <= ch) {
- var y = off.top;
- if (y < 0)
- fix_y = 0;
- if (y + h > ch)
- fix_y = ch - h;
- } else {
- if (y > 0)
- fix_y = 0;
- if (y + h < ch)
- fix_y = ch - h;
- }
- if (fix_x !== undefined || fix_y !== undefined)
- return { top: fix_y, left: fix_x };
- return undefined;
-
- },
-
- // mark
- // {
- // label: "...",
- // coords: [x, y, w, h]
- // }
- createMark: function(mark) {
- var $mark = $('<div class="mark"><div class="label">' +
- mark.label + '</div></div>');
- var ratio = this.zoomForStep(this.currentZoom()) *
- this.initial_size[0] / (100 * this.natural_size()[0]);
- var scale = function (v) {
- return v * ratio;
- }
- if (mark.coords[1][0] < 0 || mark.coords[1][1] < 0) { // whole
- var s = self.natural_size();
- if (mark.coords[1][0] < 0) mark.coords[1][0] = s[0];
- if (mark.coords[1][1] < 0) mark.coords[1][1] = s[1];
- }
-
- var coords = [[scale(mark.coords[0][0]), scale(mark.coords[0][1])],
- [scale(mark.coords[1][0]), scale(mark.coords[1][1])]];
- this.element.append($mark);
- $mark.width(coords[1][0] - coords[0][0]);
- $mark.height(coords[1][1] - coords[0][1]);
- $mark.css({left: coords[0][0], top: coords[0][1]});
- return $mark.get(0);
- },
- });
+ $.widget('wl.pictureviewer', {
+
+ options: {
+ step: 20, // step in % of initial image
+ plus_button: undefined,
+ minus_button: undefined,
+ },
+ ORIGINAL_LOADING: 0,
+ ORIGINAL_AVAILABLE: 1,
+ ORIGINAL_SHOWN: 2,
+
+ _create: function() {
+ var self = this;
+ self.initial_size = [
+ self.element.data('width'),
+ self.element.data('height')
+ ];
+ self.original_size = [
+ self.element.data('original-width'),
+ self.element.data('original-height')
+ ];
+ self._zoom = 0;
+ self._ratio = 1.0;
+
+ self.original = $('<img src="'+ self.element.attr('data-original-url') +'">');
+
+ self._original_avaialble = self.ORIGINAL_LOADING;
+ function original_loaded() {
+ self._original_avaialble = self.ORIGINAL_AVAILABLE;
+ self.options.plus_button.removeClass('inactive');
+ self.options.minus_button.removeClass('inactive');
+ console.log("Original image available, sizes initial: " + self.initial_size + ", original: " + self.original_size);
+ };
+ self.original.load(original_loaded);
+
+ self.element.width(self.initial_size[0]);
+ self.element.height(self.initial_size[1]);
+
+ if (self.options.plus_button)
+ self.options.plus_button.click(
+ function(ev) { self.zoom(1); });
+ if (self.options.minus_button)
+ self.options.minus_button.click(
+ function(ev) { self.zoom(-1); });
+
+ self._initial_mark = null;
+ function clean_initial_mark() {
+ if (self._initial_mark) {
+ self._initial_mark.remove();
+ self._initial_mark = null;
+ }
+ }
+ var initial_hash = window.location.hash;
+ if (initial_hash) {
+ var mk = null;
+ if (initial_hash.startsWith('#object-')) {
+ $("[href=#picture-objects]").trigger('click');
+ } else if (initial_hash.startsWith('#theme-')) {
+ $("[href=#picutre-themes]").trigger('click');
+ }
+ mk = $("[href=" + initial_hash + "]").eq(0);
+ self._initial_mark = self.createMark({
+ label: mk.text(),
+ coords: mk.data('coords')
+ });
+ }
+
+
+ self.options.areas_links.hover(function() {
+ clean_initial_mark();
+ $this = $(this);
+ var coords = $this.data("coords");
+ this._picture_mark = self.createMark({
+// label: $this.text(),
+ coords: coords,
+ });
+ }, function() {
+ $(this._picture_mark).remove();
+ this._picture_mark = undefined;
+ }).click(function(ev) {
+ ev.preventDefault();
+ var $mark = self.element.find('.mark').eq(0);
+ var markPos = $mark.offset();
+ markPos = [markPos.left, markPos.top];
+ var markSize = [ $mark.width(), $mark.height() ]
+ var wSize = [ window.innerWidth, window.innerHeight ];
+ window.scrollTo(
+ markPos[0] + markSize[0]/2 - wSize[0]/2,
+ markPos[1] + markSize[1]/2 - wSize[1]/2
+ );
+
+ });
+
+
+
+ return self;
+ },
+
+ currentSize: function() {
+ return [this.element.width(), this.element.height() ];
+ },
+
+ currentZoom: function() { return this._zoom; },
+
+ initOriginal: function() {
+ if (this._original_avaialble > this.ORIGINAL_LOADING &&
+ this._original_avaialble < this.ORIGINAL_SHOWN) {
+ this.element.css({'background-image': 'url('+ this.original.attr('src')+')', 'background-size': this.initial_size[0]+'px'});
+ this._original_avaialble = this.ORIGINAL_SHOWN;
+ };
+ },
+
+ zoom: function(steps) {
+ this.initOriginal();
+ var t = this._zoom + steps;
+ return this.zoomTo(t);
+ },
+
+ zoomForStep: function(step) {
+ // 0 => initial
+ // max_step-1 => max %
+ if (step < 0) step = 0;
+ var zoomperc = 100 + step * this.options.step;
+ if (zoomperc * this.initial_size[0] > this.original_size[0] * 100) {
+ zoomperc = this.original_size[0] * 100 / this.initial_size[0];
+ };
+ return zoomperc;
+ },
+
+ zoomTo: function(level) {
+ var ratio = this.zoomForStep(level) / 100;
+ var new_width = ratio * this.initial_size[0];
+ var new_height = ratio * this.initial_size[1];
+ var cs = this.currentSize();
+ if (new_width == cs[0])
+ return;
+
+ var target = {
+ 'width': new_width + 'px',
+ 'height': new_height + 'px',
+ 'background-size': new_width + 'px',
+ };
+
+ this._zoom = level;
+ this._ratio = ratio;
+
+ this.element.css(target);
+ if (this._initial_mark) {
+ this._initial_mark = this.redrawMark(this._initial_mark);
+ }
+
+ },
+
+ allowedPosition: function(off) {
+ var x = undefined, fix_x = undefined;
+ var y = undefined, fix_y = undefined;
+ var w = this.element.width();
+ var h = this.element.height();
+ var cw = $(window).width();
+ var ch = $(window).height();
+ var off = off || this.element.offset();
+
+ if (w <= cw) {
+ var x = off.left;
+ if (x < 0)
+ fix_x = 0;
+ if (x + w > cw)
+ fix_x = cw - w;
+ } else {
+ if (x > 0)
+ fix_x = 0;
+ if (x + w < cw)
+ fix_x = cw - w;
+ }
+
+ if (h <= ch) {
+ var y = off.top;
+ if (y < 0)
+ fix_y = 0;
+ if (y + h > ch)
+ fix_y = ch - h;
+ } else {
+ if (y > 0)
+ fix_y = 0;
+ if (y + h < ch)
+ fix_y = ch - h;
+ }
+ if (fix_x !== undefined || fix_y !== undefined)
+ return { top: fix_y, left: fix_x };
+ return undefined;
+
+ },
+ redrawMark: function(mark) {
+ var $mark = $(mark);
+ var $newmark = this.createMark($mark.data('mark'));
+ $mark.remove();
+ return $newmark;
+ },
+ // mark
+ // {
+ // label: "...",
+ // coords: [x, y, w, h]
+ // }
+ createMark: function(mark) {
+ if (mark.label === undefined)
+ mark.label = '';
+ var $mark = $('<div class="mark"><div class="label">' +
+ mark.label + '</div></div>');
+ var cs = this.currentSize()
+ var ratio = cs[0] / this.original_size[0];
+ var scale = function (v) {
+ return v * ratio;
+ }
+ if (mark.coords[1][0] < 0 || mark.coords[1][1] < 0) { // whole
+ var s = this.original_size;
+ if (mark.coords[1][0] < 0) mark.coords[1][0] = s[0];
+ if (mark.coords[1][1] < 0) mark.coords[1][1] = s[1];
+ }
+
+ var coords = [[scale(mark.coords[0][0]), scale(mark.coords[0][1])],
+ [scale(mark.coords[1][0]), scale(mark.coords[1][1])]];
+ this.element.append($mark);
+ $mark.width(coords[1][0] - coords[0][0]);
+ $mark.height(coords[1][1] - coords[0][1]);
+ $mark.css({left: coords[0][0], top: coords[0][1]});
+
+ $mark.data('mark', mark);
+ return $mark.get(0);
+ },
+ });
fnp / wolnelektury.git / blobdiff