From a3cda92f4c76027caa1825ea7731d3c9517229cd Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sat, 12 Mar 2022 17:50:33 +0300
Subject: [PATCH] Add bold font support in ui::label

---
 libs/ui/include/psemek/ui/label.hpp | 10 ++++++++++
 libs/ui/source/label.cpp            | 25 ++++++++++++++++---------
 2 files changed, 26 insertions(+), 9 deletions(-)

diff --git a/libs/ui/include/psemek/ui/label.hpp b/libs/ui/include/psemek/ui/label.hpp
index 66ad7889..66c8bf52 100644
--- a/libs/ui/include/psemek/ui/label.hpp
+++ b/libs/ui/include/psemek/ui/label.hpp
@@ -12,6 +12,12 @@ namespace psemek::ui
 	struct label
 		: element
 	{
+		enum font_type
+		{
+			normal,
+			bold,
+		};
+
 		enum class halignment
 		{
 			left,
@@ -40,6 +46,9 @@ namespace psemek::ui
 		virtual void set_text(std::string text);
 		virtual std::string_view text() const { return text_; }
 
+		virtual void set_font(font_type f);
+		virtual font_type font() const { return font_; }
+
 		virtual void set_halign(halignment value);
 		virtual halignment halign() const { return halign_; }
 
@@ -70,6 +79,7 @@ namespace psemek::ui
 
 	private:
 		std::string text_;
+		font_type font_ = font_type::normal;
 		halignment halign_ = halignment::left;
 		valignment valign_ = valignment::top;
 		bool wrap_ = true;
diff --git a/libs/ui/source/label.cpp b/libs/ui/source/label.cpp
index ae3e1510..a0ff88c9 100644
--- a/libs/ui/source/label.cpp
+++ b/libs/ui/source/label.cpp
@@ -16,6 +16,12 @@ namespace psemek::ui
 		on_state_changed();
 	}
 
+	void label::set_font(font_type f)
+	{
+		font_ = f;
+		on_state_changed();
+	}
+
 	void label::set_halign(halignment value)
 	{
 		halign_ = value;
@@ -119,13 +125,14 @@ namespace psemek::ui
 
 		auto st = merged_own_style();
 		if (!st) return state;
-		if (!st->font) return state;
 
-		state.font = st->font.get();
+		state.font = (font_ == font_type::normal) ? st->font.get() : st->bold_font.get();
+
+		if (!state.font) return state;
 
 		shape_options opts;
 		opts.scale = *st->text_scale;
-		auto glyphs = st->font->shape(text_, opts);
+		auto glyphs = state.font->shape(text_, opts);
 
 		geom::box<float, 2> raw_bbox;
 		for (auto const & g : glyphs)
@@ -136,7 +143,7 @@ namespace psemek::ui
 		if (wrap_)
 		{
 			max_lines = std::isfinite(bbox[1].length())
-				? std::max<std::size_t>(1, std::floor(bbox[1].length() / st->font->size()[1] / (*st->text_scale)))
+				? std::max<std::size_t>(1, std::floor(bbox[1].length() / state.font->size()[1] / (*st->text_scale)))
 				: std::numeric_limits<std::size_t>::max();
 		}
 
@@ -201,7 +208,7 @@ namespace psemek::ui
 							x_offset = glyphs[el_start - 1].position[0].max;
 
 						char const el_str[] = "...";
-						auto els = st->font->shape(el_str, opts);
+						auto els = state.font->shape(el_str, opts);
 						for (std::size_t i = el_start; i < line_end; ++i)
 						{
 							glyphs[i] = els[i - el_start];
@@ -260,13 +267,13 @@ namespace psemek::ui
 			switch (valign_)
 			{
 			case valignment::top:
-				offset[1] = bbox[1].min + l * (*st->text_scale) * st->font->size()[1];
+				offset[1] = bbox[1].min + l * (*st->text_scale) * state.font->size()[1];
 				break;
 			case valignment::center:
-				offset[1] = bbox[1].center() + (l - lines.size() / 2.f) * (*st->text_scale) * st->font->size()[1];
+				offset[1] = bbox[1].center() + (l - lines.size() / 2.f) * (*st->text_scale) * state.font->size()[1];
 				break;
 			case valignment::bottom:
-				offset[1] = bbox[1].max + (l - lines.size() * 1.f) * (*st->text_scale) * st->font->size()[1];
+				offset[1] = bbox[1].max + (l - lines.size() * 1.f) * (*st->text_scale) * state.font->size()[1];
 				break;
 			}
 
@@ -280,7 +287,7 @@ namespace psemek::ui
 
 		state.glyphs = std::move(glyphs);
 		state.size[0] = max_line_size;
-		state.size[1] = lines.size() * (*st->text_scale) * st->font->size()[1];
+		state.size[1] = lines.size() * (*st->text_scale) * state.font->size()[1];
 
 		return state;
 	}