90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
module ugui;
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import std::io;
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struct ElemText {
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Id hash;
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TextSize size;
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TextEdit* te;
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}
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/* Layout some text without bounds.
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* There is a limitation where the current frame bounds are based on the last frame, this is usually
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* not a problem but it is in the situation where the text changes almost all frames.
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*/
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macro Ctx.text(&ctx, String text, ...)
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=> ctx.text_id(@compute_id($vasplat), text);
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fn void? Ctx.text_id(&ctx, Id id, String text)
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{
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id = ctx.gen_id(id)!;
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Elem *parent = ctx.get_parent()!;
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Elem *elem = ctx.get_elem(id, ETYPE_TEXT)!;
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Style* style = ctx.styles.get_style(@str_hash("text"));
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Id text_hash = text.hash();
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if (elem.flags.is_new || elem.text.hash != text_hash) {
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elem.text.size = ctx.measure_string(text)!;
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}
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elem.text.hash = text_hash;
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elem.layout.w = @fit(style.size);
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elem.layout.h = @fit(style.size);
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elem.layout.text = elem.text.size;
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elem.layout.content_offset = style.margin + style.border + style.padding;
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update_parent_size(elem, parent);
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ctx.layout_string(text, elem.bounds.pad(elem.layout.content_offset), TOP_LEFT, parent.div.z_index, style.fg)!;
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}
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macro Ctx.text_box(&ctx, Size w, Size h, TextEdit* te, ...)
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=> ctx.text_box_id(@compute_id($vasplat), w, h, te);
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fn ElemEvents? Ctx.text_box_id(&ctx, Id id, Size w, Size h, TextEdit* te)
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{
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id = ctx.gen_id(id)!;
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Elem *parent = ctx.get_parent()!;
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Elem *elem = ctx.get_elem(id, ETYPE_TEXT)!;
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Style* style = ctx.styles.get_style(@str_hash("text-box"));
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elem.text.te = te;
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Id text_hash = te.to_string().hash();
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if (elem.flags.is_new || elem.text.hash != text_hash) {
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elem.text.size = ctx.measure_string(te.to_string())!;
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}
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elem.text.hash = text_hash;
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elem.layout.w = w;
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elem.layout.h = h;
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elem.layout.text = elem.text.size;
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elem.layout.content_offset = style.margin + style.border + style.padding;
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update_parent_size(elem, parent);
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// check input and update the text
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elem.events = ctx.get_elem_events(elem);
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if (elem.events.text_input || elem.events.key_press) {
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ctx.text_edit(elem.text.te);
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}
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// draw the box
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Rect bg_bounds = elem.bounds.pad(style.margin);
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Rect text_bounds = elem.bounds.pad(elem.layout.content_offset);
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ctx.push_rect(bg_bounds, parent.div.z_index, style)!;
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Rect cur;
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cur = ctx.layout_string(elem.text.te.to_string(), text_bounds, TOP_LEFT, parent.div.z_index, style.fg, elem.text.te.cursor)!;
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// draw the cursor if the element has focus
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cur.w = 2;
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if (elem.events.has_focus) {
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ctx.push_scissor(text_bounds, parent.div.z_index)!;
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ctx.push_rect(cur, parent.div.z_index, &&(Style){.bg = style.fg})!;
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ctx.reset_scissor(parent.div.z_index)!;
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}
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return elem.events;
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} |