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99 lines
2.3 KiB
99 lines
2.3 KiB
module ugui;
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import std::ascii;
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// FIXME: is this really the best solution?
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// "rect" is the bounding box of the element, which includes the border and the padding (so not just the content)
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fn void! Ctx.push_rect(&ctx, Rect rect, Color color, bool do_border = false, bool do_padding = false, bool do_radius = false)
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{
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// FIXME: this should be culled higher up, maybe
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if (rect.w <= 0 || rect.h <= 0) {
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return;
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}
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Rect border = ctx.style.border;
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Rect padding = ctx.style.padding;
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ushort radius = ctx.style.radius;
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Color border_color = ctx.style.brcolor;
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if (do_border) {
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Cmd cmd = {
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.type = CMD_RECT,
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.rect.rect = rect,
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.rect.color = border_color,
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.rect.radius = do_radius ? radius : 0,
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};
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ctx.cmd_queue.enqueue(&cmd)!;
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}
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Cmd cmd = {
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.type = CMD_RECT,
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.rect.rect = {
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.x = rect.x + (do_border ? border.x : 0) + (do_padding ? padding.x : 0),
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.y = rect.y + (do_border ? border.y : 0) + (do_padding ? padding.y : 0),
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.w = rect.w - (do_border ? border.x+border.w : 0) - (do_padding ? padding.x+padding.w : 0),
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.h = rect.h - (do_border ? border.y+border.h : 0) - (do_padding ? padding.y+padding.h : 0),
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},
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.rect.color = color,
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.rect.radius = do_radius ? radius : 0,
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};
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ctx.cmd_queue.enqueue(&cmd)!;
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}
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// TODO: add texture id
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fn void! Ctx.push_sprite(&ctx, Rect bounds, Rect texture)
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{
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Cmd cmd = {
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.type = CMD_SPRITE,
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.sprite.rect = bounds,
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.sprite.texture_rect = texture,
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};
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ctx.cmd_queue.enqueue(&cmd)!;
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}
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fn void! Ctx.push_string(&ctx, Rect bounds, String text)
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{
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if (text.len == 0) {
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return;
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}
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short baseline = (short)ctx.font.ascender;
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short line_height = (short)ctx.font.ascender - (short)ctx.font.descender;
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short line_gap = (short)ctx.font.linegap;
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Point orig = {
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.x = bounds.x,
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.y = bounds.y,
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};
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short line_len;
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Codepoint cp;
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usz off, x;
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while ((cp = str_to_codepoint(text[off..], &x)) != 0) {
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off += x;
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Glyph* gp;
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if (!ascii::is_cntrl((char)cp)) {
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gp = ctx.font.get_glyph(cp)!;
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Rect gb = {
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.x = orig.x + line_len + gp.ox,
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.y = orig.y + gp.oy + baseline,
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.w = gp.w,
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.h = gp.h,
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};
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Rect gt = {
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.x = gp.u,
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.y = gp.v,
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.w = gp.w,
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.h = gp.h,
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};
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if (rect_collision(gb, bounds)) {
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ctx.push_sprite(gb, gt)!;
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}
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line_len += gp.adv;
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} else if (cp == '\n'){
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orig.y += line_height + line_gap;
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line_len = 0;
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} else {
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continue;
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}
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}
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}
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