prosperon/scripts/gui.js

295 lines
6.6 KiB
JavaScript

/*
GUI functions take screen space coordinates
*/
var GUI = {
text(str, pos, size, color, wrap, anchor, cursor) {
size ??= 1;
color ??= Color.white;
wrap ??= -1;
anchor ??= [0,1];
cursor ??= -1;
var bb = cmd(118, str, size, wrap);
var w = bb.r*2;
var h = bb.t*2;
//ui_text draws with an anchor on top left corner
var p = pos.slice();
p.x -= w * anchor.x;
bb.r += (w*anchor.x);
bb.l += (w*anchor.x);
p.y += h * (1 - anchor.y);
bb.t += h*(1-anchor.y);
bb.b += h*(1-anchor.y);
ui_text(str, p, size, color, wrap, cursor);
return bb;
},
scissor(x,y,w,h) {
cmd(140,x,y,w,h);
},
scissor_win() { cmd(140,0,0,Window.width,Window.height); },
image(path,pos,color) {
color ??= Color.black;
var wh = cmd(64,path);
gui_img(path,pos, [1.0,1.0], 0.0, 0.0, [0.0,0.0], 0.0, Color.black);
return bbox.fromcwh([0,0], wh);
},
input_lmouse_pressed() {
if (GUI.selected)
GUI.selected.action();
},
input_s_pressed() {
if (GUI.selected?.down) {
GUI.selected.selected = false;
GUI.selected = GUI.selected.down;
GUI.selected.selected = true;
}
},
input_w_pressed() {
if (GUI.selected?.up) {
GUI.selected.selected = false;
GUI.selected = GUI.selected.up;
GUI.selected.selected = true;
}
},
input_enter_pressed() {
if (GUI.selected) {
GUI.selected.action();
}
}
};
GUI.controls = {};
GUI.controls.toString = function() { return "GUI controls"; };
GUI.controls.update = function() { };
GUI.controls.set_mum = function(mum)
{
mum.selected = true;
if (this.selected && this.selected !== mum)
this.selected.selected = false;
this.selected = mum;
}
GUI.controls.check_bb = function(mum)
{
if (bbox.pointin(mum.bb, Mouse.pos))
GUI.controls.set_mum(mum);
}
GUI.controls.inputs = {};
GUI.controls.inputs.fallthru = false;
GUI.controls.inputs.mouse = {};
GUI.controls.inputs.mouse.move = function(pos,dpos)
{
}
GUI.controls.inputs.mouse.scroll = function(scroll)
{
}
GUI.controls.check_submit = function() {
if (this.selected && this.selected.action)
this.selected.action(this.selected);
}
var Mum = {
padding:[0,0], /* Each element inset with this padding on all sides */
offset:[0,0],
font: "fonts/LessPerfectDOSVGA.ttf",
selectable: false,
selected: false,
font_size: 1,
text_align: "left",
scale: 1,
angle: 0,
anchor: [0,1],
hovered: {},
text_shadow: {
pos: [0,0],
color: Color.white,
},
text_outline: 1, /* outline in pixels */
color: Color.white,
margin: [0,0], /* Distance between elements for things like columns */
width: 0,
height: 0,
max_width: Infinity,
max_height: Infinity,
image_repeat: false,
image_repeat_offset: [0,0],
debug: false, /* set to true to draw debug boxes */
make(def) {
var n = Object.create(this);
Object.assign(n, def);
return n;
},
prestart() {
this.hovered.__proto__ = this;
},
start() {},
extend(def) {
var n = Object.create(this);
Object.assign(n, def);
var fn = function(def) {
var p = n.make(def);
p.prestart();
p.start();
return p;
};
fn._int = n;
return fn;
},
}
Mum.text = Mum.extend({
draw(cursor, cnt) {
cnt ??= Mum;
if (this.hide) return;
if (this.selectable) GUI.controls.check_bb(this);
this.caret ??= -1;
/* if (!this.bb)
this.calc_bb(cursor);
else
this.update_bb(cursor);
*/
var params = this.selected ? this.hovered : this;
this.width = Math.min(params.max_width, cnt.max_width);
this.calc_bb(cursor);
this.height = this.wh.y;
var aa = [0,1].sub(params.anchor);
var pos = cursor.add(params.wh.scale(aa)).add(params.offset);
ui_text(params.str, pos, params.font_size, params.color, this.width, params.caret);
},
update_bb(cursor) {
this.bb = bbox.move(this.bb, cursor.sub(this.wh.scale(this.anchor)));
},
calc_bb(cursor) {
var bb = cmd(118,this.str, this.font_size, this.width);
this.wh = bbox.towh(bb);
var pos = cursor.add(this.wh.scale([0,1].sub(this.anchor))).add(this.offset);
this.bb = bbox.move(bb,pos.add([this.wh.x/2,0]));
},
start() {
this.calc_bb([0,0]);
},
});
Mum.button = Mum.text._int.extend({
selectable: true,
color: Color.blue,
hovered:{
color: Color.red
},
action() { console.warn("Button has no action."); },
});
Mum.window = Mum.extend({
start() {
this.wh = [this.width, this.height];
this.bb = bbox.fromcwh([0,0], this.wh);
},
draw(cursor, cnt) {
cnt ??= Mum;
var p = cursor.sub(this.wh.scale(this.anchor)).add(this.padding);
GUI.window(p,this.wh, this.color);
this.bb = bbox.blwh(p, this.wh);
GUI.flush();
GUI.scissor(p.x,p.y,this.wh.x,this.wh.y);
this.max_width = this.width;
if (this.selectable) GUI.controls.check_bb(this);
var pos = [this.bb.l, this.bb.t].add(this.padding);
this.items.forEach(function(item) {
if (item.hide) return;
item.draw(pos.slice(),this);
}, this);
GUI.flush();
GUI.scissor_win();
},
});
Mum.image = Mum.extend({
start() {
if (!this.path) {
console.warn("Mum image needs a path.");
this.draw = function(){};
return;
}
var tex_wh = cmd(64, this.path);
this.wh = tex_wh.slice();
if (this.width !== 0) this.wh.x = this.width;
if (this.height !== 0) this.wh.y = this.height;
this.wh = wh.scale(this.scale);
this.sendscale = [wh.x/tex_wh.x, wh.y/tex_wh.y];
},
draw(pos) {
this.calc_bb(pos);
gui_img(this.path, pos.sub(this.anchor.scale([this.width, this.height])), this.sendscale, this.angle, this.image_repeat, this.image_repeat_offset, this.color);
},
calc_bb(pos) {
this.bb = bbox.fromcwh(this.wh.scale([0.5,0.5]), wh);
this.bb = bbox.move(this.bb, pos.sub(this.wh.scale(this.anchor)));
}
});
Mum.column = Mum.extend({
draw(cursor, cnt) {
cnt ??= Mum;
if (this.hide) return;
cursor = cursor.add(this.offset);
this.max_width = cnt.width;
this.items.forEach(function(item) {
if (item.hide) return;
item.draw(cursor, this);
cursor.y -= item.height;
cursor.y -= this.padding.y;
}, this);
},
});
GUI.window = function(pos, wh, color)
{
var p = pos.slice();
p.x += wh.x/2;
p.y += wh.y/2;
render.box(p,wh,color);
}
GUI.flush = function() { cmd(141); };
Mum.debug_colors = {
bounds: Color.red.slice(),
margin: Color.blue.slice(),
padding: Color.green.slice()
};
Object.values(Mum.debug_colors).forEach(function(v) { v.a = 100; });
return {
GUI,
Mum
};