61 lines
1.4 KiB
Plaintext
61 lines
1.4 KiB
Plaintext
module ugui;
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import std::io;
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// button element
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struct ElemButton {
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Color color;
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bool active;
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}
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const Elem BUTTON_DEFAULTS = {
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.type = ETYPE_BUTTON,
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.button = {
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.color = uint_to_rgba(0x0000ffff),
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},
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};
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// draw a button, return the events on that button
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fn ElemEvents! Ctx.button(&ctx, String label, Rect size, bool state = false)
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{
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Id id = label.hash();
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Elem *parent = ctx.get_parent()!;
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Elem *c_elem = ctx.get_elem(id)!;
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// add it to the tree
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ctx.tree.add(id, ctx.active_div)!;
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bool needs_layout = c_elem.flags.is_new || parent.flags.updated;
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if (c_elem.flags.is_new) {
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*c_elem = BUTTON_DEFAULTS;
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} else if (c_elem.type != ETYPE_BUTTON) {
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return UgError.WRONG_ELEMENT_TYPE?;
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}
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c_elem.bounds = ctx.position_element(parent, size, true);
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// if the bounds are null the element is outside the div view,
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// no interaction should occur so just return
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if (c_elem.bounds.is_null()) { return ElemEvents{}; }
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c_elem.events = ctx.get_elem_events(c_elem);
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if (c_elem.events.mouse_hover) {
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if (parent.flags.has_focus) {
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c_elem.flags.has_focus = true;
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c_elem.button.color = uint_to_rgba(0x00ff00ff);
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}
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} else {
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c_elem.button.color = uint_to_rgba(0x0000ffff);
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}
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if (state) {
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c_elem.button.color = uint_to_rgba(0xff00ffff);
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}
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// Draw the button
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ctx.push_rect(c_elem.bounds, c_elem.button.color, do_border: true, do_radius: true)!;
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return c_elem.events;
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}
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