bricks/bricks/svg.js
2025-10-05 19:15:51 +08:00

155 lines
3.2 KiB
JavaScript

var bricks = window.bricks || {};
bricks.Svg = class extends bricks.VBox {
/*
options:{
rate:
url:
color:*
blinktime:*
}
*/
constructor(opts){
opts.rate = opts.rate || 1;
opts.cwidth = opts.rate;
opts.cheight = opts.rate;
opts.blinktime = opts.blinktime? opts.blinktime : 0;
opts.dynsize = true;
super(opts);
if (! this.color) {
this.color = bricks.app.get_color();
}
if (opts.url){
this.set_url(opts.url);
}
}
set_url(url){
if (!url){
this.dom_element.innerHTML = '';
return;
}
this.url = url;
fetch(url)
.then(response => response.text())
.then(svgText => {
if (svgText.startsWith("<svg ")){
this.svgText = svgText;
this.set_colored_svg(this.color);
if (this.blinktime) this.start_blink();
}
});
}
set_ancent_color(e){
var pstyle = getComputedStyle(this.parent);
this.set_color(pstyle.color);
}
set_color(color){
this.color = color;
this.set_colored_svg(color);
}
set_colored_svg(color){
this.cur_color = color;
this.svg_text = bricks.obj_fmtstr({color: color}, this.svgText);
this.dom_element.innerHTML = this.svg_text;
}
_blink(){
if (this.blinktime) {
if (this.dom_element.innerHTML == '')
this.dom_element.innerHTML = this.svg_text;
else
this.dom_element.innerHTML = ''
this.blink_task = schedule_once(this._blink.bind(this),
this.blinktime);
}
}
start_blink(){
if (!this.blink_task){
this._blink();
}
}
end_blink(){
if (this.blink_task)
this.blink_task.cancel();
this.blink_task = null;
}
}
bricks.StatedSvg = class extends bricks.Svg {
/* {
states:[{state:aaa,url:} ,,],
state:
} */
constructor(opts){
super(opts);
this.curstate = null;
if (this.states){
if (! this.state){
this.state = this.states[0].state;
}
this.set_state(this.state);
}
this.bind('click', this.trigger.bind(this));
}
trigger(event){
event.stopPropagation();
event.preventDefault();
for (var i=0;i<this.states.length;i++){
var g = this.states[i];
if (this.curstate == g.state) {
var k = 0;
if (i < this.states.length - 1){
k = i + 1;
}
this.set_state(this.states[k].state);
return;
}
}
}
set_state(state){
if (state == this.curstate){
return;
}
this.curstate = state;
var done = false;
this.states.forEach(s => {
if (s.state == state){
this.set_url(s.url);
this.dispatch('state_changed', state);
done = true;
return;
}
});
if (! done) this.set_url(null);
}
}
bricks.MultipleStateIcon = class extends bricks.Svg {
constructor(opts){
opts.url = opts.urls[opts.state];
super(opts);
this.state = opts.state;
this.urls = opts.urls;
this.bind('click', this.change_state.bind(this));
}
change_state(event){
event.stopPropagation();
var states = Object.keys(this.urls);
for (var i=0;i<states.length;i++){
if (states[i] == this.state){
var k = i + 1;
if (k >= states.length) k = 0;
this.set_state(states[k]);
this.dispatch('state_changed', this.state);
break;
}
}
}
set_state(state){
this.state = state;
this.set_url(this.urls[state]);
}
}
bricks.Factory.register('Svg', bricks.Svg);
bricks.Factory.register('StatedSvg', bricks.StatedSvg);
bricks.Factory.register('MultipleStateIcon', bricks.MultipleStateIcon);