Merged nuklear_ui into default

1 files changed, 147 insertions, 0 deletions

diff --git a/nuklear_ui/font_win.c b/nuklear_ui/font_win.c
new file mode 100644
index 0000000..1235d9e
--- /dev/null
+++ b/nuklear_ui/font_win.c
@@ -0,0 +1,147 @@
+#include <windows.h>
+#include <shlobj.h>
+#include <string.h>
+#include "../paths.h"
+#include "../util.h"
+#include "sfnt.h"
+
+uint8_t *default_font(uint32_t *size_out)
+{
+	static const char *thin[] = {"Thin", NULL};
+	static const char *extra_light[] = {"ExtraLight", "UltraLight", NULL};
+	static const char *light[] = {"Light", NULL};
+	static const char *regular[] = {"Regular", "Normal", "Book", NULL};
+	static const char *medium[] = {"Medium", NULL};
+	static const char *semi_bold[] = {"SemiBold", "DemiBold", NULL};
+	static const char *bold[] = {"Bold", NULL};
+	static const char *extra_bold[] = {"ExtraBold", "UltraBold", NULL};
+	static const char *heavy[] = {"Heavy", "Black", NULL};
+	static const char **weight_to_subfamilies[] = {
+		NULL,
+		thin,
+		extra_light,
+		light,
+		regular,
+		medium,
+		semi_bold,
+		bold,
+		extra_bold,
+		heavy
+	};
+
+	NONCLIENTMETRICSA metrics = {
+		.cbSize = sizeof(metrics)
+	};
+	char *pref_name = NULL, *pref_prefix = NULL;
+	const char **pref_sub_families;
+	if (SystemParametersInfoA(SPI_GETNONCLIENTMETRICS, sizeof(metrics), &metrics, 0)) {
+		pref_name = metrics.lfMenuFont.lfFaceName;
+		int32_t weight = metrics.lfMenuFont.lfWeight / 100;
+		if (weight < 1 || weight > 9) {
+			weight = 4;
+		}
+		printf("Preferred family: %s, weight: %d\n", pref_name, weight);
+		pref_sub_families = weight_to_subfamilies[weight];
+	}
+	if (pref_name) {
+		uint32_t prefix_len = 0;
+		while (pref_name[prefix_len] && pref_name[prefix_len] != ' ')
+		{
+			prefix_len++;
+		}
+		pref_prefix = malloc(prefix_len + 1);
+		memcpy(pref_prefix, pref_name, prefix_len);
+		pref_prefix[prefix_len] = 0;
+	}
+	sfnt_table *selected = NULL;
+	char windows[MAX_PATH];
+	SHGetFolderPathA(NULL, CSIDL_WINDOWS, NULL, 0, windows);
+	char *fonts = path_append(windows, "Fonts");
+	size_t num_entries;
+	char *tahoma = NULL, *arial = NULL;
+	dir_entry *entries = get_dir_list(fonts, &num_entries);
+	char *path = NULL;
+	for (size_t i = 0; i < num_entries; i++)
+	{
+		if (entries[i].is_dir) {
+			continue;
+		}
+		char *ext = path_extension(entries[i].name);
+		if (!ext || (strcasecmp(ext, "ttf") && strcasecmp(ext, "ttc") && strcasecmp(ext, "dfont"))) {
+			//not a truetype font, ignore
+			free(ext);
+			continue;
+		}
+		free(ext);
+		char *base = basename_no_extension(entries[i].name);
+		printf("basename: %s\n", base);
+		if (pref_prefix && !strncasecmp(base, pref_prefix, 6)) {
+			path = path_append(fonts, entries[i].name);
+			FILE *f = fopen(path, "rb");
+			if (f)
+			{
+				long font_size = file_size(f);
+				uint8_t *blob = malloc(font_size);
+				if (font_size == fread(blob, 1, font_size, f))
+				{
+					sfnt_container *sfnt = load_sfnt(blob, font_size);
+					if (sfnt) {
+						selected = sfnt_subfamily_by_names(sfnt, pref_sub_families);
+						if (!selected) {
+							sfnt_free(sfnt);
+						}
+					} else {
+						free(blob);
+					}
+				} else {
+					free(blob);
+				}
+				fclose(f);
+			}
+			free(path);
+			free(base);
+			if (selected) {
+				printf("Found preferred font in %s\n", entries[i].name);
+				break;
+			}
+		} else if (!strcasecmp(base, "tahoma")) {
+			tahoma = entries[i].name;
+		} else if (!strcasecmp(base, "arial")) {
+			arial = entries[i].name;
+		}
+		free(base);
+	}
+	if (!selected) {
+		path = NULL;
+		if (tahoma) {
+			path = path_append(fonts, tahoma);
+		} else if (arial) {
+			path = path_append(fonts, arial);
+		}
+		if (path) {
+			FILE *f = fopen(path, "rb");
+			if (f)
+			{
+				long font_size = file_size(f);
+				uint8_t *blob = malloc(font_size);
+				if (font_size == fread(blob, 1, font_size, f))
+				{
+					sfnt_container *sfnt = load_sfnt(blob, font_size);
+					if (sfnt) {
+						selected = sfnt->tables;
+					} else {
+						free(blob);
+					}
+				}
+				fclose(f);
+			}
+			free(path);
+		}
+	}
+	free(fonts);
+	free_dir_list(entries, num_entries);
+	if (selected) {
+		return sfnt_flatten(selected, size_out);
+	}
+	return NULL;
+}