usveticic@3012: // widget_slider.ysl2
usveticic@3012: 
usveticic@3012: template "widget[@type='Slider']", mode="widget_class"
usveticic@3012:     ||
usveticic@3012:     class SliderWidget extends Widget{
usveticic@3012:         frequency = 5;
usveticic@3012:         range = undefined;
usveticic@3012:         fi = undefined;
usveticic@3012:         drag = false;
usveticic@3012:         enTimer = false;
usveticic@3012: 
usveticic@3012:         dispatch(value) {
usveticic@3012:             if(!this.drag){
usveticic@3012:                 if(this.value_elt)
usveticic@3012:                     this.value_elt.textContent = String(value);
usveticic@3012: 
usveticic@3012:                 this.handle_position(value);
usveticic@3012:             }
usveticic@3012:         }
usveticic@3012: 
usveticic@3012:         handle_position(value){
usveticic@3012:             let [min,max,start,totallength] = this.range;
usveticic@3012:             let length = Math.max(0,Math.min(totallength,(Number(value)-min)*totallength/(max-min)));
usveticic@3012:             let tip = this.range_elt.getPointAtLength(length);
usveticic@3012:             this.handle_elt.setAttribute('transform',"translate("+(tip.x-start.x)+","+(tip.y-start.y)+")");
usveticic@3012:         }
usveticic@3012: 
usveticic@3012:         on_release(evt) {
usveticic@3012:             if(this.drag){
usveticic@3012:                 this.drag = false;
usveticic@3012:             }
usveticic@3012:         }
usveticic@3012: 
usveticic@3012:         update_position(evt){
usveticic@3012:             if(this.drag && this.enTimer){
usveticic@3012:                 var html_dist = 0;
usveticic@3012:                 var svg_dist = 0;
usveticic@3012: 
usveticic@3012:                 //calculate size of widget in html
usveticic@3012:                 var range_borders = this.range_elt.getBoundingClientRect();
usveticic@3012:                 var range_length = Math.sqrt( range_borders.height*range_borders.height + range_borders.width*range_borders.width );
usveticic@3012:                 var [minX,minY,maxX,maxY] = [range_borders.left,range_borders.bottom,range_borders.right,range_borders.top];
usveticic@3012: 
usveticic@3012:                 //get range and mouse coordinates
usveticic@3012:                 var mouseX = undefined;
usveticic@3012:                 var mouseY = undefined;
usveticic@3012:                 if (evt.type.startsWith("touch")){
usveticic@3012:                     mouseX = Math.ceil(evt.touches[0].clientX);
usveticic@3012:                     mouseY = Math.ceil(evt.touches[0].clientY);
usveticic@3012:                 }
usveticic@3012:                 else{
usveticic@3012:                     mouseX = evt.pageX;
usveticic@3012:                     mouseY = evt.pageY;
usveticic@3012:                 }
usveticic@3012: 
usveticic@3012:                 //get handle distance from mouse position
usveticic@3012:                 if (minX > mouseX && minY < mouseY){
usveticic@3012:                     html_dist = 0;
usveticic@3012:                 }
usveticic@3012:                 else if (maxX < mouseX && maxY > mouseY){
usveticic@3012:                     html_dist = range_length;
usveticic@3012:                 }
usveticic@3012:                 else{
usveticic@3012:                     // calculate distace
usveticic@3012:                     if(this.fi > 0.7){
usveticic@3012:                         html_dist = (minY - mouseY)/Math.sin(this.fi);
usveticic@3012:                     }
usveticic@3012:                     else{
usveticic@3012:                         html_dist = (mouseX - minX)/Math.cos(this.fi);
usveticic@3012:                     }
usveticic@3012: 
usveticic@3012:                     //check if in range
usveticic@3012:                     if (html_dist > range_length){
usveticic@3012:                         html_dist = range_length;
usveticic@3012:                     }
usveticic@3012:                     else if (html_dist < 0){
usveticic@3012:                         html_dist = 0;
usveticic@3012:                     }
usveticic@3012:                 }
usveticic@3012:                 //redraw handle
usveticic@3012:                 this.handle_position(svg_dist=(html_dist/range_length)*this.range[1]);
usveticic@3012:                 this.value_elt.textContent = String(Math.ceil(svg_dist));
Edouard@3018:                 this.apply_hmi_value(0, Math.ceil(svg_dist));
usveticic@3012:                 //reset timer
usveticic@3012:                 this.enTimer = false;
usveticic@3012:                 setTimeout("{hmi_widgets['"+this.element_id+"'].enTimer = true;}", 100);
usveticic@3012:             }
usveticic@3012: 
usveticic@3012:         }
usveticic@3012: 
usveticic@3012:         on_select(evt){
usveticic@3012:             this.drag = true;
usveticic@3012:             this.enTimer = true;
usveticic@3012:             this.update_position(evt);
usveticic@3012:         }
usveticic@3012: 
usveticic@3012:         init() {
usveticic@3012:             let min = this.min_elt ?
usveticic@3012:                         Number(this.min_elt.textContent) :
usveticic@3012:                         this.args.length >= 1 ? this.args[0] : 0;
usveticic@3012:             let max = this.max_elt ?
usveticic@3012:                         Number(this.max_elt.textContent) :
usveticic@3012:                         this.args.length >= 2 ? this.args[1] : 100;
usveticic@3012: 
usveticic@3012:             this.range = [min, max, this.range_elt.getPointAtLength(0),this.range_elt.getTotalLength()];
usveticic@3012:             let start = this.range_elt.getPointAtLength(0);
usveticic@3012:             let end = this.range_elt.getPointAtLength(this.range_elt.getTotalLength());
usveticic@3012:             this.fi = Math.atan2(start.y-end.y, end.x-start.x);
usveticic@3012: 
usveticic@3012: 
usveticic@3012:             this.handle_elt.addEventListener("touchstart", hmi_widgets[this.element_id].on_select.bind(this));
usveticic@3012:             this.handle_elt.addEventListener("mousedown", hmi_widgets[this.element_id].on_select.bind(this));
usveticic@3012:             this.element.addEventListener("mousedown", hmi_widgets[this.element_id].on_select.bind(this));
usveticic@3012: 
usveticic@3012:             window.addEventListener("touchmove", hmi_widgets[this.element_id].update_position.bind(this));
usveticic@3012:             window.addEventListener("mousemove", hmi_widgets[this.element_id].update_position.bind(this));
usveticic@3012: 
usveticic@3012:             window.addEventListener("mouseup", hmi_widgets[this.element_id].on_release.bind(this))
usveticic@3012:             window.addEventListener("touchend", hmi_widgets[this.element_id].on_release.bind(this));
usveticic@3012:             window.addEventListener("touchcancel", hmi_widgets[this.element_id].on_release.bind(this));
usveticic@3012: 
usveticic@3012:         }
usveticic@3012:     }
usveticic@3012:     ||
usveticic@3012: 
usveticic@3012: template "widget[@type='Slider']", mode="widget_defs" {
usveticic@3012:     param "hmi_element";
usveticic@3012:     labels("handle range");
usveticic@3012:     optional_labels("value min max");
usveticic@3012:     |,
Edouard@3018: }