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use ui;
use core:geometry;
use graphics;
class TextWindow extends Frame {
TextPainter p;
init() {
init("Text", Size(300, 400)) {}
painter = p;
create();
}
Bool onClick(Bool pressed, Point at, MouseButton button) {
if (pressed) {
if (button == MouseButton:right) {
var iter = p.text.text.begin;
p.text.color(iter, iter + 1, blue);
repaint();
} else {
p.setFont(Font("Courier", 20));
}
}
return true;
}
}
class TextPainter extends Painter {
Text text;
Brush color;
Brush hl;
Brush[] bg;
Text[] lines;
Float[] baseline;
Rect[] rects;
init() {
Font f("Arial", 25);
Font f2("Arial", 20);
f2.italic = true;
f2.underline = true;
// f2.weight = 700;
init() {
text = Text("ABÅÄあお☃😀!\n\tà̖\n👩💻\nLast line", f);
color = SolidBrush(black);
hl = SolidBrush(red);
}
{
var iter = text.text.begin();
text.color(iter + 3, iter + 6, green);
text.color(iter + 2, iter + 4, red);
text.underline(iter + 1, iter + 4);
text.underline(iter, iter + 2);
text.italic(iter, iter + 3);
}
bg << SolidBrush(green + white * 0.6);
bg << SolidBrush(red + white * 0.6);
bg << SolidBrush(blue + white * 0.6);
bg << SolidBrush(yellow);
for (l in text.lineInfo) {
lines << Text(l.text, f2);
baseline << l.baseline;
}
updateBoxes();
}
void setFont(Font f) {
text = Text(text.text, f);
updateBoxes();
repaint();
}
void updateBoxes() {
baseline.clear();
for (l in text.lineInfo) {
baseline << l.baseline;
}
var iter = text.text.begin();
var end = text.text.end();
rects.clear();
while (iter != end) {
var next = iter;
next++;
if (iter.v != Char(10)) {
var bounds = text.boundsOf(iter, next);
if (bounds.any)
rects << bounds[0];
else
print("Empty bounds for ${iter.v}");
}
iter = next;
}
}
Bool render(Size size, Graphics g) {
Point offset(8, 8);
Nat colorId = 0;
for (r in rects) {
g.fill(r + offset, bg[colorId]);
if (++colorId == bg.count)
colorId = 0;
}
for (b in baseline) {
g.line(Point(0, offset.y + b), Point(size.w, offset.y + b), hl);
}
g.draw(text, color, offset);
offset.y += text.size.h + 8;
for (l in lines) {
g.draw(l, color, offset);
offset.y += l.size.h;
}
false;
}
}
void text() {
TextWindow window;
window.waitForClose();
}
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