86 lines
2.2 KiB
Plaintext
86 lines
2.2 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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int filler;
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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 = ctx.gen_id(label)!;
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Elem *parent = ctx.get_parent()!;
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Elem *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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if (elem.flags.is_new) {
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elem.type = ETYPE_BUTTON;
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} else if (elem.type != ETYPE_BUTTON) {
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return UgError.WRONG_ELEMENT_TYPE?;
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}
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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 (elem.bounds.is_null()) { return ElemEvents{}; }
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Color col = 0x0000ffffu.to_rgba();
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elem.events = ctx.get_elem_events(elem);
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if (state) {
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col = 0xff0000ffu.to_rgba();
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} else if (ctx.elem_focus(elem) || elem.events.mouse_hover) {
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col = 0xff00ffffu.to_rgba();
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}
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// Draw the button
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ctx.push_rect(elem.bounds, col, do_border: true, do_radius: true)!;
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return elem.events;
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}
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fn ElemEvents! Ctx.button_label(&ctx, String label, Rect size = Rect{0,0,short.max,short.max}, bool state = false)
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{
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Id id = ctx.gen_id(label)!;
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Elem *parent = ctx.get_parent()!;
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Elem *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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// 1. Fill the element fields
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// this resets the flags
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elem.type = ETYPE_BUTTON;
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short line_height = (short)ctx.font.ascender - (short)ctx.font.descender;
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Rect text_size = ctx.get_text_bounds(label)!;
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Rect btn_size = text_size.add(Rect{0,0,10,10});
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// 2. Layout
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elem.bounds = ctx.position_element(parent, btn_size, true);
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if (elem.bounds.is_null()) { return ElemEvents{}; }
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Color col = 0x0000ffffu.to_rgba();
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elem.events = ctx.get_elem_events(elem);
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if (state) {
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col = 0xff0000ffu.to_rgba();
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} else if (ctx.elem_focus(elem) || elem.events.mouse_hover) {
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col = 0xff00ffffu.to_rgba();
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}
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// Draw the button
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text_size.x = elem.bounds.x;
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text_size.y = elem.bounds.y;
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Point off = ctx.center_text(text_size, elem.bounds);
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text_size.x += off.x;
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text_size.y += off.y;
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ctx.push_rect(elem.bounds, col, do_border: true, do_radius: true)!;
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ctx.push_string(text_size, label)!;
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return elem.events;
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}
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