From 26f5f1ccd0681797e49cf932dd417b7221adaa06 Mon Sep 17 00:00:00 2001
From: Jonathan Bradley <jcb@pikum.xyz>
Date: Fri, 7 Feb 2025 16:08:09 -0500
Subject: pke: chkpt: store font and glyph geometry

---
 src/font.hpp | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

(limited to 'src/font.hpp')

diff --git a/src/font.hpp b/src/font.hpp
index 5b3646c..4d0d0a7 100644
--- a/src/font.hpp
+++ b/src/font.hpp
@@ -6,19 +6,53 @@
 #include "pk.h"
 
 #include <glm/vec2.hpp>
+#include <glm/vec4.hpp>
 
 TypeSafeInt_H(FontTypeIndex, uint16_t, 0xFFFF);
 TypeSafeInt_H(FontRenderIndex, uint16_t, 0xFFFF);
 
+enum FONT_RENDER_SURFACE_AREA_TYPE_FLAGS : uint8_t {
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS_NONE = 0,
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS_GROW_VERTICAL   = (1 << 0),
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS_GROW_HORIZONTAL = (1 << 1),
+
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS_STATIC = 0,
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS_FLUID = (1 << 0) | (1 << 1),
+};
+
 struct FontGlyphChar {
-	uint32_t unicode;
+	double advance;
 	glm::vec2 sprite_region_min;
 	glm::vec2 sprite_region_max;
+	glm::dvec4 baseline_bounding_box;
+	uint32_t unicode;
+	bool is_whitespace;
+};
+struct FontRenderSettings {
+	float char_scale;
+	float line_height_scale;
+	float char_spacing_scale;
+	glm::ivec2 surface_area_size;
+	FONT_RENDER_SURFACE_AREA_TYPE_FLAGS surface_area_type_flags;
 };
 struct FontRender {
 	uint32_t len;
 	FontTypeIndex index_ft;
 	FontRenderIndex index_fr;
+	FontRenderSettings settings;
+};
+struct FontTypeMSDFSettings {
+	float minimum_scale;
+	float px_range;
+};
+struct FontTypeSpacing {
+	double geometryScale;
+	double em_size;
+	double ascender_y;
+	double descender_y;
+	double line_height;
+	double underline_y;
+	double underline_thickness;
 };
 struct FontType : public Entity_Base {
 	pk_cstr title;
@@ -31,6 +65,8 @@ struct FontType : public Entity_Base {
 	FontRenderIndex n_render = FontRenderIndex{0};
 	FontRenderIndex h_render = FontRenderIndex{0};
 	FontTypeIndex index_ft = FontTypeIndex{0};
+	struct FontTypeMSDFSettings msdf_settings;
+	struct FontTypeSpacing spacing;
 	struct FontTypeGraphics {
 		VkDeviceMemory deviceMemoryVert = VK_NULL_HANDLE;
 		VkDeviceMemory deviceMemoryTexture = VK_NULL_HANDLE;
-- 
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