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// Copyright (c) 2016, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
"use strict";
var _ = require('underscore');
var $ = require('jquery');
var EventEmitter = require('events');
var options = require('./options');
function makeFontSizeDropdown(elem, obj, buttonDropdown) {
var onWheelEvent = function (e) {
e.preventDefault();
var selectedId = elem.find('.active').index();
if (e.originalEvent.deltaY >= 0 && selectedId < elem.children().length - 1) {
selectedId++;
} else if (e.originalEvent.deltaY < 0 && selectedId > 0) {
selectedId--;
}
elem.children().eq(selectedId).trigger('click');
};
var onClickEvent = function () {
// Toggle off the selection of the others
$(this)
.addClass('active')
.siblings().removeClass('active');
// Send the data
obj.scale = $(this).data('value');
obj.apply();
obj.emit('change');
};
for (var i = 8; i <= 30; i++) {
var item = $('<button></button>');
item.attr('data-value', i)
.addClass('dropdown-item btn btn-sm btn-light')
.text(i)
.appendTo(elem)
.click(onClickEvent);
if (obj.scale === i) {
item.addClass('active');
}
}
if (buttonDropdown) {
buttonDropdown.on('wheel', onWheelEvent);
}
}
function convertOldScale(oldScale) {
// New low + ((new max - new low) * (oldScale - old low) / (old max - old low))
return Math.floor(8 + (22 * (oldScale - 0.3) / 2.7));
}
function FontScale(domRoot, state, fontSelectorOrEditor) {
EventEmitter.call(this);
this.domRoot = domRoot;
// Old scale went from 0.3 to 3. New one uses 8 up to 30, so we can convert the old ones to the new format
this.scale = state.fontScale || options.defaultFontScale;
if (this.scale < 8) {
this.scale = convertOldScale(this.scale);
}
this.setTarget(fontSelectorOrEditor);
this.apply();
makeFontSizeDropdown(this.domRoot.find('.font-size-list'), this, this.domRoot.find('.fs-button'));
}
_.extend(FontScale.prototype, EventEmitter.prototype);
FontScale.prototype.apply = function () {
if (this.isFontOfStr) {
this.domRoot.find(this.fontSelectorOrEditor).css('font-size', this.scale + "pt");
} else {
this.fontSelectorOrEditor.updateOptions({
fontSize: this.scale
});
}
};
FontScale.prototype.addState = function (state) {
state.fontScale = this.scale;
};
FontScale.prototype.setScale = function (scale) {
this.scale = scale;
this.apply();
};
FontScale.prototype.setTarget = function (target) {
this.fontSelectorOrEditor = target;
this.isFontOfStr = typeof (this.fontSelectorOrEditor) === "string";
};
module.exports = FontScale;