nuklear_font.c

#include "nuklear.h"
#include "nuklear_internal.h"
 
#ifdef NK_INCLUDE_FONT_BAKING
/* -------------------------------------------------------------
 *
 *                          RECT PACK
 *
 * --------------------------------------------------------------*/
 
#include "stb_rect_pack.h"
 
/*
 * ==============================================================
 *
 *                          TRUETYPE
 *
 * ===============================================================
 */
#define STBTT_MAX_OVERSAMPLE   8
#include "stb_truetype.h"
 
/* -------------------------------------------------------------
 *
 *                          FONT BAKING
 *
 * --------------------------------------------------------------*/
struct nk_font_bake_data {
    struct stbtt_fontinfo info;
    struct stbrp_rect *rects;
    stbtt_pack_range *ranges;
    nk_rune range_count;
};
 
struct nk_font_baker {
    struct nk_allocator alloc;
    struct stbtt_pack_context spc;
    struct nk_font_bake_data *build;
    stbtt_packedchar *packed_chars;
    struct stbrp_rect *rects;
    stbtt_pack_range *ranges;
};
 
NK_GLOBAL const nk_size nk_rect_align = NK_ALIGNOF(struct stbrp_rect);
NK_GLOBAL const nk_size nk_range_align = NK_ALIGNOF(stbtt_pack_range);
NK_GLOBAL const nk_size nk_char_align = NK_ALIGNOF(stbtt_packedchar);
NK_GLOBAL const nk_size nk_build_align = NK_ALIGNOF(struct nk_font_bake_data);
NK_GLOBAL const nk_size nk_baker_align = NK_ALIGNOF(struct nk_font_baker);
 
NK_INTERN int
nk_range_count(const nk_rune *range)
{
    const nk_rune *iter = range;
    NK_ASSERT(range);
    if (!range) return 0;
    while (*(iter++) != 0);
    return (iter == range) ? 0 : (int)((iter - range)/2);
}
NK_INTERN int
nk_range_glyph_count(const nk_rune *range, int count)
{
    int i = 0;
    int total_glyphs = 0;
    for (i = 0; i < count; ++i) {
        int diff;
        nk_rune f = range[(i*2)+0];
        nk_rune t = range[(i*2)+1];
        NK_ASSERT(t >= f);
        diff = (int)((t - f) + 1);
        total_glyphs += diff;
    }
    return total_glyphs;
}
NK_API const nk_rune*
nk_font_default_glyph_ranges(void)
{
    NK_STORAGE const nk_rune ranges[] = {0x0020, 0x00FF, 0};
    return ranges;
}
NK_API const nk_rune*
nk_font_chinese_glyph_ranges(void)
{
    NK_STORAGE const nk_rune ranges[] = {
        0x0020, 0x00FF,
        0x3000, 0x30FF,
        0x31F0, 0x31FF,
        0xFF00, 0xFFEF,
        0x4E00, 0x9FAF,
        0
    };
    return ranges;
}
NK_API const nk_rune*
nk_font_cyrillic_glyph_ranges(void)
{
    NK_STORAGE const nk_rune ranges[] = {
        0x0020, 0x00FF,
        0x0400, 0x052F,
        0x2DE0, 0x2DFF,
        0xA640, 0xA69F,
        0
    };
    return ranges;
}
NK_API const nk_rune*
nk_font_korean_glyph_ranges(void)
{
    NK_STORAGE const nk_rune ranges[] = {
        0x0020, 0x00FF,
        0x3131, 0x3163,
        0xAC00, 0xD79D,
        0
    };
    return ranges;
}
NK_INTERN void
nk_font_baker_memory(nk_size *temp, int *glyph_count,
    struct nk_font_config *config_list, int count)
{
    int range_count = 0;
    int total_range_count = 0;
    struct nk_font_config *iter, *i;
 
    NK_ASSERT(config_list);
    NK_ASSERT(glyph_count);
    if (!config_list) {
        *temp = 0;
        *glyph_count = 0;
        return;
    }
    *glyph_count = 0;
    for (iter = config_list; iter; iter = iter->next) {
        i = iter;
        do {if (!i->range) iter->range = nk_font_default_glyph_ranges();
            range_count = nk_range_count(i->range);
            total_range_count += range_count;
            *glyph_count += nk_range_glyph_count(i->range, range_count);
        } while ((i = i->n) != iter);
    }
    *temp = (nk_size)*glyph_count * sizeof(struct stbrp_rect);
    *temp += (nk_size)total_range_count * sizeof(stbtt_pack_range);
    *temp += (nk_size)*glyph_count * sizeof(stbtt_packedchar);
    *temp += (nk_size)count * sizeof(struct nk_font_bake_data);
    *temp += sizeof(struct nk_font_baker);
    *temp += nk_rect_align + nk_range_align + nk_char_align;
    *temp += nk_build_align + nk_baker_align;
}
NK_INTERN struct nk_font_baker*
nk_font_baker(void *memory, int glyph_count, int count, const struct nk_allocator *alloc)
{
    struct nk_font_baker *baker;
    if (!memory) return 0;
    /* setup baker inside a memory block  */
    baker = (struct nk_font_baker*)NK_ALIGN_PTR(memory, nk_baker_align);
    baker->build = (struct nk_font_bake_data*)NK_ALIGN_PTR((baker + 1), nk_build_align);
    baker->packed_chars = (stbtt_packedchar*)NK_ALIGN_PTR((baker->build + count), nk_char_align);
    baker->rects = (struct stbrp_rect*)NK_ALIGN_PTR((baker->packed_chars + glyph_count), nk_rect_align);
    baker->ranges = (stbtt_pack_range*)NK_ALIGN_PTR((baker->rects + glyph_count), nk_range_align);
    baker->alloc = *alloc;
    return baker;
}
NK_INTERN int
nk_font_bake_pack(struct nk_font_baker *baker,
    nk_size *image_memory, int *width, int *height, struct nk_recti *custom,
    const struct nk_font_config *config_list, int count,
    const struct nk_allocator *alloc)
{
    NK_STORAGE const nk_size max_height = 1024 * 32;
    const struct nk_font_config *config_iter, *it;
    int total_glyph_count = 0;
    int total_range_count = 0;
    int range_count = 0;
    int i = 0;
 
    NK_ASSERT(image_memory);
    NK_ASSERT(width);
    NK_ASSERT(height);
    NK_ASSERT(config_list);
    NK_ASSERT(count);
    NK_ASSERT(alloc);
 
    if (!image_memory || !width || !height || !config_list || !count) return nk_false;
    for (config_iter = config_list; config_iter; config_iter = config_iter->next) {
        it = config_iter;
        do {range_count = nk_range_count(it->range);
            total_range_count += range_count;
            total_glyph_count += nk_range_glyph_count(it->range, range_count);
        } while ((it = it->n) != config_iter);
    }
    /* setup font baker from temporary memory */
    for (config_iter = config_list; config_iter; config_iter = config_iter->next) {
        it = config_iter;
        do {
            struct stbtt_fontinfo *font_info = &baker->build[i++].info;
            font_info->userdata = (void*)alloc;
 
            if (!stbtt_InitFont(font_info, (const unsigned char*)it->ttf_blob, stbtt_GetFontOffsetForIndex((const unsigned char*)it->ttf_blob, 0)))
                return nk_false;
        } while ((it = it->n) != config_iter);
    }
    *height = 0;
    *width = (total_glyph_count > 1000) ? 1024 : 512;
    stbtt_PackBegin(&baker->spc, 0, (int)*width, (int)max_height, 0, 1, (void*)alloc);
    {
        int input_i = 0;
        int range_n = 0;
        int rect_n = 0;
        int char_n = 0;
 
        if (custom) {
            /* pack custom user data first so it will be in the upper left corner*/
            struct stbrp_rect custom_space;
            nk_zero(&custom_space, sizeof(custom_space));
            custom_space.w = (stbrp_coord)(custom->w);
            custom_space.h = (stbrp_coord)(custom->h);
 
            stbtt_PackSetOversampling(&baker->spc, 1, 1);
            stbrp_pack_rects((struct stbrp_context*)baker->spc.pack_info, &custom_space, 1);
            *height = NK_MAX(*height, (int)(custom_space.y + custom_space.h));
 
            custom->x = (short)custom_space.x;
            custom->y = (short)custom_space.y;
            custom->w = (short)custom_space.w;
            custom->h = (short)custom_space.h;
        }
 
        /* first font pass: pack all glyphs */
        for (input_i = 0, config_iter = config_list; input_i < count && config_iter;
            config_iter = config_iter->next) {
            it = config_iter;
            do {int n = 0;
                int glyph_count;
                const nk_rune *in_range;
                const struct nk_font_config *cfg = it;
                struct nk_font_bake_data *tmp = &baker->build[input_i++];
 
                /* count glyphs + ranges in current font */
                glyph_count = 0; range_count = 0;
                for (in_range = cfg->range; in_range[0] && in_range[1]; in_range += 2) {
                    glyph_count += (int)(in_range[1] - in_range[0]) + 1;
                    range_count++;
                }
 
                /* setup ranges  */
                tmp->ranges = baker->ranges + range_n;
                tmp->range_count = (nk_rune)range_count;
                range_n += range_count;
                for (i = 0; i < range_count; ++i) {
                    in_range = &cfg->range[i * 2];
                    tmp->ranges[i].font_size = cfg->size;
                    tmp->ranges[i].first_unicode_codepoint_in_range = (int)in_range[0];
                    tmp->ranges[i].num_chars = (int)(in_range[1]- in_range[0]) + 1;
                    tmp->ranges[i].chardata_for_range = baker->packed_chars + char_n;
                    char_n += tmp->ranges[i].num_chars;
                }
 
                /* pack */
                tmp->rects = baker->rects + rect_n;
                rect_n += glyph_count;
                stbtt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v);
                n = stbtt_PackFontRangesGatherRects(&baker->spc, &tmp->info,
                    tmp->ranges, (int)tmp->range_count, tmp->rects);
                stbrp_pack_rects((struct stbrp_context*)baker->spc.pack_info, tmp->rects, (int)n);
 
                /* texture height */
                for (i = 0; i < n; ++i) {
                    if (tmp->rects[i].was_packed)
                        *height = NK_MAX(*height, tmp->rects[i].y + tmp->rects[i].h);
                }
            } while ((it = it->n) != config_iter);
        }
        NK_ASSERT(rect_n == total_glyph_count);
        NK_ASSERT(char_n == total_glyph_count);
        NK_ASSERT(range_n == total_range_count);
    }
    *height = (int)nk_round_up_pow2((nk_uint)*height);
    *image_memory = (nk_size)(*width) * (nk_size)(*height);
    return nk_true;
}
NK_INTERN void
nk_font_bake(struct nk_font_baker *baker, void *image_memory, int width, int height,
    struct nk_font_glyph *glyphs, int glyphs_count,
    const struct nk_font_config *config_list, int font_count)
{
    int input_i = 0;
    nk_rune glyph_n = 0;
    const struct nk_font_config *config_iter;
    const struct nk_font_config *it;
 
    NK_ASSERT(image_memory);
    NK_ASSERT(width);
    NK_ASSERT(height);
    NK_ASSERT(config_list);
    NK_ASSERT(baker);
    NK_ASSERT(font_count);
    NK_ASSERT(glyphs_count);
    if (!image_memory || !width || !height || !config_list ||
        !font_count || !glyphs || !glyphs_count)
        return;
 
    /* second font pass: render glyphs */
    nk_zero(image_memory, (nk_size)((nk_size)width * (nk_size)height));
    baker->spc.pixels = (unsigned char*)image_memory;
    baker->spc.height = (int)height;
    for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter;
        config_iter = config_iter->next) {
        it = config_iter;
        do {const struct nk_font_config *cfg = it;
            struct nk_font_bake_data *tmp = &baker->build[input_i++];
            stbtt_PackSetOversampling(&baker->spc, cfg->oversample_h, cfg->oversample_v);
            stbtt_PackFontRangesRenderIntoRects(&baker->spc, &tmp->info, tmp->ranges, (int)tmp->range_count, tmp->rects);
        } while ((it = it->n) != config_iter);
    } stbtt_PackEnd(&baker->spc);
 
    /* third pass: setup font and glyphs */
    for (input_i = 0, config_iter = config_list; input_i < font_count && config_iter;
        config_iter = config_iter->next) {
        it = config_iter;
        do {nk_size i = 0;
            int char_idx = 0;
            nk_rune glyph_count = 0;
            const struct nk_font_config *cfg = it;
            struct nk_font_bake_data *tmp = &baker->build[input_i++];
            struct nk_baked_font *dst_font = cfg->font;
 
            float font_scale = stbtt_ScaleForPixelHeight(&tmp->info, cfg->size);
            int unscaled_ascent, unscaled_descent, unscaled_line_gap;
            stbtt_GetFontVMetrics(&tmp->info, &unscaled_ascent, &unscaled_descent,
                                    &unscaled_line_gap);
 
            /* fill baked font */
            if (!cfg->merge_mode) {
                dst_font->ranges = cfg->range;
                dst_font->height = cfg->size;
                dst_font->ascent = ((float)unscaled_ascent * font_scale);
                dst_font->descent = ((float)unscaled_descent * font_scale);
                dst_font->glyph_offset = glyph_n;
                /*
                    Need to zero this, or it will carry over from a previous
                    bake, and cause a segfault when accessing glyphs[].
                */
                dst_font->glyph_count = 0;
            }
 
            /* fill own baked font glyph array */
            for (i = 0; i < tmp->range_count; ++i) {
                stbtt_pack_range *range = &tmp->ranges[i];
                for (char_idx = 0; char_idx < range->num_chars; char_idx++)
                {
                    nk_rune codepoint = 0;
                    float dummy_x = 0, dummy_y = 0;
                    stbtt_aligned_quad q;
                    struct nk_font_glyph *glyph;
 
                    /* query glyph bounds from stb_truetype */
                    const stbtt_packedchar *pc = &range->chardata_for_range[char_idx];
                    codepoint = (nk_rune)(range->first_unicode_codepoint_in_range + char_idx);
                    stbtt_GetPackedQuad(range->chardata_for_range, (int)width,
                        (int)height, char_idx, &dummy_x, &dummy_y, &q, 0);
 
                    /* fill own glyph type with data */
                    glyph = &glyphs[dst_font->glyph_offset + dst_font->glyph_count + (unsigned int)glyph_count];
                    glyph->codepoint = codepoint;
                    glyph->x0 = q.x0; glyph->y0 = q.y0;
                    glyph->x1 = q.x1; glyph->y1 = q.y1;
                    glyph->y0 += (dst_font->ascent + 0.5f);
                    glyph->y1 += (dst_font->ascent + 0.5f);
                    glyph->w = glyph->x1 - glyph->x0 + 0.5f;
                    glyph->h = glyph->y1 - glyph->y0;
 
                    if (cfg->coord_type == NK_COORD_PIXEL) {
                        glyph->u0 = q.s0 * (float)width;
                        glyph->v0 = q.t0 * (float)height;
                        glyph->u1 = q.s1 * (float)width;
                        glyph->v1 = q.t1 * (float)height;
                    } else {
                        glyph->u0 = q.s0;
                        glyph->v0 = q.t0;
                        glyph->u1 = q.s1;
                        glyph->v1 = q.t1;
                    }
                    glyph->xadvance = (pc->xadvance + cfg->spacing.x);
                    if (cfg->pixel_snap)
                        glyph->xadvance = (float)(int)(glyph->xadvance + 0.5f);
                    glyph_count++;
                }
            }
            dst_font->glyph_count += glyph_count;
            glyph_n += glyph_count;
        } while ((it = it->n) != config_iter);
    }
}
NK_INTERN void
nk_font_bake_custom_data(void *img_memory, int img_width, int img_height,
    struct nk_recti img_dst, const char *texture_data_mask, int tex_width,
    int tex_height, char white, char black)
{
    nk_byte *pixels;
    int y = 0;
    int x = 0;
    int n = 0;
 
    NK_ASSERT(img_memory);
    NK_ASSERT(img_width);
    NK_ASSERT(img_height);
    NK_ASSERT(texture_data_mask);
    NK_UNUSED(tex_height);
    if (!img_memory || !img_width || !img_height || !texture_data_mask)
        return;
 
    pixels = (nk_byte*)img_memory;
    for (y = 0, n = 0; y < tex_height; ++y) {
        for (x = 0; x < tex_width; ++x, ++n) {
            const int off0 = ((img_dst.x + x) + (img_dst.y + y) * img_width);
            const int off1 = off0 + 1 + tex_width;
            pixels[off0] = (texture_data_mask[n] == white) ? 0xFF : 0x00;
            pixels[off1] = (texture_data_mask[n] == black) ? 0xFF : 0x00;
        }
    }
}
NK_INTERN void
nk_font_bake_convert(void *out_memory, int img_width, int img_height,
    const void *in_memory)
{
    int n = 0;
    nk_rune *dst;
    const nk_byte *src;
 
    NK_ASSERT(out_memory);
    NK_ASSERT(in_memory);
    NK_ASSERT(img_width);
    NK_ASSERT(img_height);
    if (!out_memory || !in_memory || !img_height || !img_width) return;
 
    dst = (nk_rune*)out_memory;
    src = (const nk_byte*)in_memory;
    for (n = (int)(img_width * img_height); n > 0; n--)
        *dst++ = ((nk_rune)(*src++) << 24) | 0x00FFFFFF;
}
 
/* -------------------------------------------------------------
 *
 *                          FONT
 *
 * --------------------------------------------------------------*/
NK_INTERN float
nk_font_text_width(nk_handle handle, float height, const char *text, int len)
{
    nk_rune unicode;
    int text_len  = 0;
    float text_width = 0;
    int glyph_len = 0;
    float scale = 0;
 
    struct nk_font *font = (struct nk_font*)handle.ptr;
    NK_ASSERT(font);
    NK_ASSERT(font->glyphs);
    if (!font || !text || !len)
        return 0;
 
    scale = height/font->info.height;
    glyph_len = text_len = nk_utf_decode(text, &unicode, (int)len);
    if (!glyph_len) return 0;
    while (text_len <= (int)len && glyph_len) {
        const struct nk_font_glyph *g;
        if (unicode == NK_UTF_INVALID) break;
 
        /* query currently drawn glyph information */
        g = nk_font_find_glyph(font, unicode);
        text_width += g->xadvance * scale;
 
        /* offset next glyph */
        glyph_len = nk_utf_decode(text + text_len, &unicode, (int)len - text_len);
        text_len += glyph_len;
    }
    return text_width;
}
#ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT
NK_INTERN void
nk_font_query_font_glyph(nk_handle handle, float height,
    struct nk_user_font_glyph *glyph, nk_rune codepoint, nk_rune next_codepoint)
{
    float scale;
    const struct nk_font_glyph *g;
    struct nk_font *font;
 
    NK_ASSERT(glyph);
    NK_UNUSED(next_codepoint);
 
    font = (struct nk_font*)handle.ptr;
    NK_ASSERT(font);
    NK_ASSERT(font->glyphs);
    if (!font || !glyph)
        return;
 
    scale = height/font->info.height;
    g = nk_font_find_glyph(font, codepoint);
    glyph->width = (g->x1 - g->x0) * scale;
    glyph->height = (g->y1 - g->y0) * scale;
    glyph->offset = nk_vec2(g->x0 * scale, g->y0 * scale);
    glyph->xadvance = (g->xadvance * scale);
    glyph->uv[0] = nk_vec2(g->u0, g->v0);
    glyph->uv[1] = nk_vec2(g->u1, g->v1);
}
#endif
NK_API const struct nk_font_glyph*
nk_font_find_glyph(const struct nk_font *font, nk_rune unicode)
{
    int i = 0;
    int count;
    int total_glyphs = 0;
    const struct nk_font_glyph *glyph = 0;
    const struct nk_font_config *iter = 0;
 
    NK_ASSERT(font);
    NK_ASSERT(font->glyphs);
    NK_ASSERT(font->info.ranges);
    if (!font || !font->glyphs) return 0;
 
    glyph = font->fallback;
    iter = font->config;
    do {count = nk_range_count(iter->range);
        for (i = 0; i < count; ++i) {
            nk_rune f = iter->range[(i*2)+0];
            nk_rune t = iter->range[(i*2)+1];
            int diff = (int)((t - f) + 1);
            if (unicode >= f && unicode <= t)
                return &font->glyphs[((nk_rune)total_glyphs + (unicode - f))];
            total_glyphs += diff;
        }
    } while ((iter = iter->n) != font->config);
    return glyph;
}
NK_INTERN void
nk_font_init(struct nk_font *font, float pixel_height,
    nk_rune fallback_codepoint, struct nk_font_glyph *glyphs,
    const struct nk_baked_font *baked_font, nk_handle atlas)
{
    struct nk_baked_font baked;
    NK_ASSERT(font);
    NK_ASSERT(glyphs);
    NK_ASSERT(baked_font);
    if (!font || !glyphs || !baked_font)
        return;
 
    baked = *baked_font;
    font->fallback = 0;
    font->info = baked;
    font->scale = (float)pixel_height / (float)font->info.height;
    font->glyphs = &glyphs[baked_font->glyph_offset];
    font->texture = atlas;
    font->fallback_codepoint = fallback_codepoint;
    font->fallback = nk_font_find_glyph(font, fallback_codepoint);
 
    font->handle.height = font->info.height * font->scale;
    font->handle.width = nk_font_text_width;
    font->handle.userdata.ptr = font;
#ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT
    font->handle.query = nk_font_query_font_glyph;
    font->handle.texture = font->texture;
#endif
}
 
/* ---------------------------------------------------------------------------
 *
 *                          DEFAULT FONT
 *
 * ProggyClean.ttf
 * Copyright (c) 2004, 2005 Tristan Grimmer
 * MIT license https://github.com/bluescan/proggyfonts/blob/master/LICENSE
 * Download and more information at https://github.com/bluescan/proggyfonts
 *-----------------------------------------------------------------------------*/
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Woverlength-strings"
#elif defined(__GNUC__) || defined(__GNUG__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverlength-strings"
#endif
 
#ifdef NK_INCLUDE_DEFAULT_FONT
 
NK_GLOBAL const char nk_proggy_clean_ttf_compressed_data_base85[11980+1] =
    "7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/"
    "2*>]b(MC;$jPfY.;h^`IWM9<Lh2TlS+f-s$o6Q<BWH`YiU.xfLq$N;$0iR/GX:U(jcW2p/W*q?-qmnUCI;jHSAiFWM.R*kU@C=GH?a9wp8f$e.-4^Qg1)Q-GL(lf(r/7GrRgwV%MS=C#"
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    "Y(,p'H9rIVY-b,'%bCPF7.J<Up^,(dU1VY*5#WkTU>h19w,WQhLI)3S#f$2(eb,jr*b;3Vw]*7NH%$c4Vs,eD9>XW8?N]o+(*pgC%/72LV-u<Hp,3@e^9UB1J+ak9-TN/mhKPg+AJYd$"
    "MlvAF_jCK*.O-^(63adMT->W%iewS8W6m2rtCpo'RS1R84=@paTKt)>=%&1[)*vp'u+x,VrwN;&]kuO9JDbg=pO$J*.jVe;u'm0dr9l,<*wMK*Oe=g8lV_KEBFkO'oU]^=[-792#ok,)"
    "i]lR8qQ2oA8wcRCZ^7w/Njh;?.stX?Q1>S1q4Bn$)K1<-rGdO'$Wr.Lc.CG)$/*JL4tNR/,SVO3,aUw'DJN:)Ss;wGn9A32ijw%FL+Z0Fn.U9;reSq)bmI32U==5ALuG&#Vf1398/pVo"
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    "iDDG)g,r%+?,$@?uou5tSe2aN_AQU*<h`e-GI7)?OK2A.d7_c)?wQ5AS@DL3r#7fSkgl6-++D:'A,uq7SvlB$pcpH'q3n0#_%dY#xCpr-l<F0NR@-##FEV6NTF6##$l84N1w?AO>'IAO"
    "URQ##V^Fv-XFbGM7Fl(N<3DhLGF%q.1rC$#:T__&Pi68%0xi_&[qFJ(77j_&JWoF.V735&T,[R*:xFR*K5>>#`bW-?4Ne_&6Ne_&6Ne_&n`kr-#GJcM6X;uM6X;uM(.a..^2TkL%oR(#"
    ";u.T%fAr%4tJ8&><1=GHZ_+m9/#H1F^R#SC#*N=BA9(D?v[UiFY>>^8p,KKF.W]L29uLkLlu/+4T<XoIB&hx=T1PcDaB&;HH+-AFr?(m9HZV)FKS8JCw;SD=6[^/DZUL`EUDf]GGlG&>"
    "w$)F./^n3+rlo+DB;5sIYGNk+i1t-69Jg--0pao7Sm#K)pdHW&;LuDNH@H>#/X-TI(;P>#,Gc>#0Su>#4`1?#8lC?#<xU?#@.i?#D:%@#HF7@#LRI@#P_[@#Tkn@#Xw*A#]-=A#a9OA#"
    "d<F&#*;G##.GY##2Sl##6`($#:l:$#>xL$#B.`$#F:r$#JF.%#NR@%#R_R%#Vke%#Zww%#_-4&#3^Rh%Sflr-k'MS.o?.5/sWel/wpEM0%3'/1)K^f1-d>G21&v(35>V`39V7A4=onx4"
    "A1OY5EI0;6Ibgr6M$HS7Q<)58C5w,;WoA*#[%T*#`1g*#d=#+#hI5+#lUG+#pbY+#tnl+#x$),#&1;,#*=M,#.I`,#2Ur,#6b.-#;w[H#iQtA#m^0B#qjBB#uvTB##-hB#'9$C#+E6C#"
    "/QHC#3^ZC#7jmC#;v)D#?,<D#C8ND#GDaD#KPsD#O]/E#g1A5#KA*1#gC17#MGd;#8(02#L-d3#rWM4#Hga1#,<w0#T.j<#O#'2#CYN1#qa^:#_4m3#o@/=#eG8=#t8J5#`+78#4uI-#"
    "m3B2#SB[8#Q0@8#i[*9#iOn8#1Nm;#^sN9#qh<9#:=x-#P;K2#$%X9#bC+.#Rg;<#mN=.#MTF.#RZO.#2?)4#Y#(/#[)1/#b;L/#dAU/#0Sv;#lY$0#n`-0#sf60#(F24#wrH0#%/e0#"
    "TmD<#%JSMFove:CTBEXI:<eh2g)B,3h2^G3i;#d3jD>)4kMYD4lVu`4m`:&5niUA5@(A5BA1]PBB:xlBCC=2CDLXMCEUtiCf&0g2'tN?PGT4CPGT4CPGT4CPGT4CPGT4CPGT4CPGT4CP"
    "GT4CPGT4CPGT4CPGT4CPGT4CPGT4CP-qekC`.9kEg^+F$kwViFJTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5o,^<-28ZI'O?;xp"
    "O?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xp;7q-#lLYI:xvD=#";
 
#endif /* NK_INCLUDE_DEFAULT_FONT */
 
#define NK_CURSOR_DATA_W 90
#define NK_CURSOR_DATA_H 27
NK_GLOBAL const char nk_custom_cursor_data[NK_CURSOR_DATA_W * NK_CURSOR_DATA_H + 1] =
{
    "..-         -XXXXXXX-    X    -           X           -XXXXXXX          -          XXXXXXX"
    "..-         -X.....X-   X.X   -          X.X          -X.....X          -          X.....X"
    "---         -XXX.XXX-  X...X  -         X...X         -X....X           -           X....X"
    "X           -  X.X  - X.....X -        X.....X        -X...X            -            X...X"
    "XX          -  X.X  -X.......X-       X.......X       -X..X.X           -           X.X..X"
    "X.X         -  X.X  -XXXX.XXXX-       XXXX.XXXX       -X.X X.X          -          X.X X.X"
    "X..X        -  X.X  -   X.X   -          X.X          -XX   X.X         -         X.X   XX"
    "X...X       -  X.X  -   X.X   -    XX    X.X    XX    -      X.X        -        X.X      "
    "X....X      -  X.X  -   X.X   -   X.X    X.X    X.X   -       X.X       -       X.X       "
    "X.....X     -  X.X  -   X.X   -  X..X    X.X    X..X  -        X.X      -      X.X        "
    "X......X    -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -         X.X   XX-XX   X.X         "
    "X.......X   -  X.X  -   X.X   -X.....................X-          X.X X.X-X.X X.X          "
    "X........X  -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -           X.X..X-X..X.X           "
    "X.........X -XXX.XXX-   X.X   -  X..X    X.X    X..X  -            X...X-X...X            "
    "X..........X-X.....X-   X.X   -   X.X    X.X    X.X   -           X....X-X....X           "
    "X......XXXXX-XXXXXXX-   X.X   -    XX    X.X    XX    -          X.....X-X.....X          "
    "X...X..X    ---------   X.X   -          X.X          -          XXXXXXX-XXXXXXX          "
    "X..X X..X   -       -XXXX.XXXX-       XXXX.XXXX       ------------------------------------"
    "X.X  X..X   -       -X.......X-       X.......X       -    XX           XX    -           "
    "XX    X..X  -       - X.....X -        X.....X        -   X.X           X.X   -           "
    "      X..X          -  X...X  -         X...X         -  X..X           X..X  -           "
    "       XX           -   X.X   -          X.X          - X...XXXXXXXXXXXXX...X -           "
    "------------        -    X    -           X           -X.....................X-           "
    "                    ----------------------------------- X...XXXXXXXXXXXXX...X -           "
    "                                                      -  X..X           X..X  -           "
    "                                                      -   X.X           X.X   -           "
    "                                                      -    XX           XX    -           "
};
 
#ifdef __clang__
#pragma clang diagnostic pop
#elif defined(__GNUC__) || defined(__GNUG__)
#pragma GCC diagnostic pop
#endif
 
NK_GLOBAL unsigned char *nk__barrier;
NK_GLOBAL unsigned char *nk__barrier2;
NK_GLOBAL unsigned char *nk__barrier3;
NK_GLOBAL unsigned char *nk__barrier4;
NK_GLOBAL unsigned char *nk__dout;
 
NK_INTERN unsigned int
nk_decompress_length(unsigned char *input)
{
    return (unsigned int)((input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11]);
}
NK_INTERN void
nk__match(unsigned char *data, unsigned int length)
{
    /* INVERSE of memmove... write each byte before copying the next...*/
    NK_ASSERT (nk__dout + length <= nk__barrier);
    if (nk__dout + length > nk__barrier) { nk__dout += length; return; }
    if (data < nk__barrier4) { nk__dout = nk__barrier+1; return; }
    while (length--) *nk__dout++ = *data++;
}
NK_INTERN void
nk__lit(unsigned char *data, unsigned int length)
{
    NK_ASSERT (nk__dout + length <= nk__barrier);
    if (nk__dout + length > nk__barrier) { nk__dout += length; return; }
    if (data < nk__barrier2) { nk__dout = nk__barrier+1; return; }
    NK_MEMCPY(nk__dout, data, length);
    nk__dout += length;
}
NK_INTERN unsigned char*
nk_decompress_token(unsigned char *i)
{
    #define nk__in2(x)   ((i[x] << 8) + i[(x)+1])
    #define nk__in3(x)   ((i[x] << 16) + nk__in2((x)+1))
    #define nk__in4(x)   ((i[x] << 24) + nk__in3((x)+1))
 
    if (*i >= 0x20) { /* use fewer if's for cases that expand small */
        if (*i >= 0x80)       nk__match(nk__dout-i[1]-1, (unsigned int)i[0] - 0x80 + 1), i += 2;
        else if (*i >= 0x40)  nk__match(nk__dout-(nk__in2(0) - 0x4000 + 1), (unsigned int)i[2]+1), i += 3;
        else /* *i >= 0x20 */ nk__lit(i+1, (unsigned int)i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
    } else { /* more ifs for cases that expand large, since overhead is amortized */
        if (*i >= 0x18)       nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x180000 + 1), (unsigned int)i[3]+1), i += 4;
        else if (*i >= 0x10)  nk__match(nk__dout-(unsigned int)(nk__in3(0) - 0x100000 + 1), (unsigned int)nk__in2(3)+1), i += 5;
        else if (*i >= 0x08)  nk__lit(i+2, (unsigned int)nk__in2(0) - 0x0800 + 1), i += 2 + (nk__in2(0) - 0x0800 + 1);
        else if (*i == 0x07)  nk__lit(i+3, (unsigned int)nk__in2(1) + 1), i += 3 + (nk__in2(1) + 1);
        else if (*i == 0x06)  nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), i[4]+1u), i += 5;
        else if (*i == 0x04)  nk__match(nk__dout-(unsigned int)(nk__in3(1)+1), (unsigned int)nk__in2(4)+1u), i += 6;
    }
    return i;
}
NK_INTERN unsigned int
nk_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)
{
    const unsigned long ADLER_MOD = 65521;
    unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
    unsigned long blocklen, i;
 
    blocklen = buflen % 5552;
    while (buflen) {
        for (i=0; i + 7 < blocklen; i += 8) {
            s1 += buffer[0]; s2 += s1;
            s1 += buffer[1]; s2 += s1;
            s1 += buffer[2]; s2 += s1;
            s1 += buffer[3]; s2 += s1;
            s1 += buffer[4]; s2 += s1;
            s1 += buffer[5]; s2 += s1;
            s1 += buffer[6]; s2 += s1;
            s1 += buffer[7]; s2 += s1;
            buffer += 8;
        }
        for (; i < blocklen; ++i) {
            s1 += *buffer++; s2 += s1;
        }
 
        s1 %= ADLER_MOD; s2 %= ADLER_MOD;
        buflen -= (unsigned int)blocklen;
        blocklen = 5552;
    }
    return (unsigned int)(s2 << 16) + (unsigned int)s1;
}
NK_INTERN unsigned int
nk_decompress(unsigned char *output, unsigned char *i, unsigned int length)
{
    unsigned int olen;
    if (nk__in4(0) != 0x57bC0000) return 0;
    if (nk__in4(4) != 0)          return 0; /* error! stream is > 4GB */
    olen = nk_decompress_length(i);
    nk__barrier2 = i;
    nk__barrier3 = i+length;
    nk__barrier = output + olen;
    nk__barrier4 = output;
    i += 16;
 
    nk__dout = output;
    for (;;) {
        unsigned char *old_i = i;
        i = nk_decompress_token(i);
        if (i == old_i) {
            if (*i == 0x05 && i[1] == 0xfa) {
                NK_ASSERT(nk__dout == output + olen);
                if (nk__dout != output + olen) return 0;
                if (nk_adler32(1, output, olen) != (unsigned int) nk__in4(2))
                    return 0;
                return olen;
            } else {
                NK_ASSERT(0); /* NOTREACHED */
                return 0;
            }
        }
        NK_ASSERT(nk__dout <= output + olen);
        if (nk__dout > output + olen)
            return 0;
    }
}
NK_INTERN unsigned int
nk_decode_85_byte(char c)
{
    return (unsigned int)((c >= '\\') ? c-36 : c-35);
}
NK_INTERN void
nk_decode_85(unsigned char* dst, const unsigned char* src)
{
    while (*src)
    {
        unsigned int tmp =
            nk_decode_85_byte((char)src[0]) +
            85 * (nk_decode_85_byte((char)src[1]) +
            85 * (nk_decode_85_byte((char)src[2]) +
            85 * (nk_decode_85_byte((char)src[3]) +
            85 * nk_decode_85_byte((char)src[4]))));
 
        /* we can't assume little-endianess. */
        dst[0] = (unsigned char)((tmp >> 0) & 0xFF);
        dst[1] = (unsigned char)((tmp >> 8) & 0xFF);
        dst[2] = (unsigned char)((tmp >> 16) & 0xFF);
        dst[3] = (unsigned char)((tmp >> 24) & 0xFF);
 
        src += 5;
        dst += 4;
    }
}
 
/* -------------------------------------------------------------
 *
 *                          FONT ATLAS
 *
 * --------------------------------------------------------------*/
NK_API struct nk_font_config
nk_font_config(float pixel_height)
{
    struct nk_font_config cfg;
    nk_zero_struct(cfg);
    cfg.ttf_blob = 0;
    cfg.ttf_size = 0;
    cfg.ttf_data_owned_by_atlas = 0;
    cfg.size = pixel_height;
    cfg.oversample_h = 3;
    cfg.oversample_v = 1;
    cfg.pixel_snap = 0;
    cfg.coord_type = NK_COORD_UV;
    cfg.spacing = nk_vec2(0,0);
    cfg.range = nk_font_default_glyph_ranges();
    cfg.merge_mode = 0;
    cfg.fallback_glyph = '?';
    cfg.font = 0;
    cfg.n = 0;
    return cfg;
}
#ifdef NK_INCLUDE_DEFAULT_ALLOCATOR
NK_API void
nk_font_atlas_init_default(struct nk_font_atlas *atlas)
{
    NK_ASSERT(atlas);
    if (!atlas) return;
    nk_zero_struct(*atlas);
    atlas->temporary.userdata.ptr = 0;
    atlas->temporary.alloc = nk_malloc;
    atlas->temporary.free = nk_mfree;
    atlas->permanent.userdata.ptr = 0;
    atlas->permanent.alloc = nk_malloc;
    atlas->permanent.free = nk_mfree;
}
#endif
NK_API void
nk_font_atlas_init(struct nk_font_atlas *atlas, const struct nk_allocator *alloc)
{
    NK_ASSERT(atlas);
    NK_ASSERT(alloc);
    if (!atlas || !alloc) return;
    nk_zero_struct(*atlas);
    atlas->permanent = *alloc;
    atlas->temporary = *alloc;
}
NK_API void
nk_font_atlas_init_custom(struct nk_font_atlas *atlas,
    const struct nk_allocator *permanent, const struct nk_allocator *temporary)
{
    NK_ASSERT(atlas);
    NK_ASSERT(permanent);
    NK_ASSERT(temporary);
    if (!atlas || !permanent || !temporary) return;
    nk_zero_struct(*atlas);
    atlas->permanent = *permanent;
    atlas->temporary = *temporary;
}
NK_API void
nk_font_atlas_begin(struct nk_font_atlas *atlas)
{
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc && atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc && atlas->permanent.free);
    if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free ||
        !atlas->temporary.alloc || !atlas->temporary.free) return;
    if (atlas->glyphs) {
        atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs);
        atlas->glyphs = 0;
    }
    if (atlas->pixel) {
        atlas->permanent.free(atlas->permanent.userdata, atlas->pixel);
        atlas->pixel = 0;
    }
}
NK_API struct nk_font*
nk_font_atlas_add(struct nk_font_atlas *atlas, const struct nk_font_config *config)
{
    struct nk_font *font = 0;
    struct nk_font_config *cfg;
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
 
    NK_ASSERT(config);
    NK_ASSERT(config->ttf_blob);
    NK_ASSERT(config->ttf_size);
    NK_ASSERT(config->size > 0.0f);
 
    if (!atlas || !config || !config->ttf_blob || !config->ttf_size || config->size <= 0.0f||
        !atlas->permanent.alloc || !atlas->permanent.free ||
        !atlas->temporary.alloc || !atlas->temporary.free)
        return 0;
 
    /* allocate font config  */
    cfg = (struct nk_font_config*)
        atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font_config));
    NK_MEMCPY(cfg, config, sizeof(*config));
    cfg->n = cfg;
    cfg->p = cfg;
 
    if (!config->merge_mode) {
        /* insert font config into list */
        if (!atlas->config) {
            atlas->config = cfg;
            cfg->next = 0;
        } else {
            struct nk_font_config *i = atlas->config;
            while (i->next) i = i->next;
            i->next = cfg;
            cfg->next = 0;
        }
        /* allocate new font */
        font = (struct nk_font*)
            atlas->permanent.alloc(atlas->permanent.userdata,0, sizeof(struct nk_font));
        NK_ASSERT(font);
        nk_zero(font, sizeof(*font));
        if (!font) return 0;
        font->config = cfg;
 
        /* insert font into list */
        if (!atlas->fonts) {
            atlas->fonts = font;
            font->next = 0;
        } else {
            struct nk_font *i = atlas->fonts;
            while (i->next) i = i->next;
            i->next = font;
            font->next = 0;
        }
        cfg->font = &font->info;
    } else {
        /* extend previously added font */
        struct nk_font *f = 0;
        struct nk_font_config *c = 0;
        NK_ASSERT(atlas->font_num);
        f = atlas->fonts;
        c = f->config;
        cfg->font = &f->info;
 
        cfg->n = c;
        cfg->p = c->p;
        c->p->n = cfg;
        c->p = cfg;
    }
    /* create own copy of .TTF font blob */
    if (!config->ttf_data_owned_by_atlas) {
        cfg->ttf_blob = atlas->permanent.alloc(atlas->permanent.userdata,0, cfg->ttf_size);
        NK_ASSERT(cfg->ttf_blob);
        if (!cfg->ttf_blob) {
            atlas->font_num++;
            return 0;
        }
        NK_MEMCPY(cfg->ttf_blob, config->ttf_blob, cfg->ttf_size);
        cfg->ttf_data_owned_by_atlas = 1;
    }
    atlas->font_num++;
    return font;
}
NK_API struct nk_font*
nk_font_atlas_add_from_memory(struct nk_font_atlas *atlas, void *memory,
    nk_size size, float height, const struct nk_font_config *config)
{
    struct nk_font_config cfg;
    NK_ASSERT(memory);
    NK_ASSERT(size);
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
    if (!atlas || !atlas->temporary.alloc || !atlas->temporary.free || !memory || !size ||
        !atlas->permanent.alloc || !atlas->permanent.free)
        return 0;
 
    cfg = (config) ? *config: nk_font_config(height);
    cfg.ttf_blob = memory;
    cfg.ttf_size = size;
    cfg.size = height;
    cfg.ttf_data_owned_by_atlas = 0;
    return nk_font_atlas_add(atlas, &cfg);
}
#ifdef NK_INCLUDE_STANDARD_IO
NK_API struct nk_font*
nk_font_atlas_add_from_file(struct nk_font_atlas *atlas, const char *file_path,
    float height, const struct nk_font_config *config)
{
    nk_size size;
    char *memory;
    struct nk_font_config cfg;
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
 
    if (!atlas || !file_path) return 0;
    memory = nk_file_load(file_path, &size, &atlas->permanent);
    if (!memory) return 0;
 
    cfg = (config) ? *config: nk_font_config(height);
    cfg.ttf_blob = memory;
    cfg.ttf_size = size;
    cfg.size = height;
    cfg.ttf_data_owned_by_atlas = 1;
    return nk_font_atlas_add(atlas, &cfg);
}
#endif
NK_API struct nk_font*
nk_font_atlas_add_compressed(struct nk_font_atlas *atlas,
    void *compressed_data, nk_size compressed_size, float height,
    const struct nk_font_config *config)
{
    unsigned int decompressed_size;
    void *decompressed_data;
    struct nk_font_config cfg;
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
 
    NK_ASSERT(compressed_data);
    NK_ASSERT(compressed_size);
    if (!atlas || !compressed_data || !atlas->temporary.alloc || !atlas->temporary.free ||
        !atlas->permanent.alloc || !atlas->permanent.free)
        return 0;
 
    decompressed_size = nk_decompress_length((unsigned char*)compressed_data);
    decompressed_data = atlas->permanent.alloc(atlas->permanent.userdata,0,decompressed_size);
    NK_ASSERT(decompressed_data);
    if (!decompressed_data) return 0;
    nk_decompress((unsigned char*)decompressed_data, (unsigned char*)compressed_data,
        (unsigned int)compressed_size);
 
    cfg = (config) ? *config: nk_font_config(height);
    cfg.ttf_blob = decompressed_data;
    cfg.ttf_size = decompressed_size;
    cfg.size = height;
    cfg.ttf_data_owned_by_atlas = 1;
    return nk_font_atlas_add(atlas, &cfg);
}
NK_API struct nk_font*
nk_font_atlas_add_compressed_base85(struct nk_font_atlas *atlas,
    const char *data_base85, float height, const struct nk_font_config *config)
{
    int compressed_size;
    void *compressed_data;
    struct nk_font *font;
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
 
    NK_ASSERT(data_base85);
    if (!atlas || !data_base85 || !atlas->temporary.alloc || !atlas->temporary.free ||
        !atlas->permanent.alloc || !atlas->permanent.free)
        return 0;
 
    compressed_size = (((int)nk_strlen(data_base85) + 4) / 5) * 4;
    compressed_data = atlas->temporary.alloc(atlas->temporary.userdata,0, (nk_size)compressed_size);
    NK_ASSERT(compressed_data);
    if (!compressed_data) return 0;
    nk_decode_85((unsigned char*)compressed_data, (const unsigned char*)data_base85);
    font = nk_font_atlas_add_compressed(atlas, compressed_data,
                    (nk_size)compressed_size, height, config);
    atlas->temporary.free(atlas->temporary.userdata, compressed_data);
    return font;
}
 
#ifdef NK_INCLUDE_DEFAULT_FONT
NK_API struct nk_font*
nk_font_atlas_add_default(struct nk_font_atlas *atlas,
    float pixel_height, const struct nk_font_config *config)
{
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
    return nk_font_atlas_add_compressed_base85(atlas,
        nk_proggy_clean_ttf_compressed_data_base85, pixel_height, config);
}
#endif
NK_API const void*
nk_font_atlas_bake(struct nk_font_atlas *atlas, int *width, int *height,
    enum nk_font_atlas_format fmt)
{
    int i = 0;
    void *tmp = 0;
    nk_size tmp_size, img_size;
    struct nk_font *font_iter;
    struct nk_font_baker *baker;
 
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
 
    NK_ASSERT(width);
    NK_ASSERT(height);
    if (!atlas || !width || !height ||
        !atlas->temporary.alloc || !atlas->temporary.free ||
        !atlas->permanent.alloc || !atlas->permanent.free)
        return 0;
 
#ifdef NK_INCLUDE_DEFAULT_FONT
    /* no font added so just use default font */
    if (!atlas->font_num)
        atlas->default_font = nk_font_atlas_add_default(atlas, 13.0f, 0);
#endif
    NK_ASSERT(atlas->font_num);
    if (!atlas->font_num) return 0;
 
    /* allocate temporary baker memory required for the baking process */
    nk_font_baker_memory(&tmp_size, &atlas->glyph_count, atlas->config, atlas->font_num);
    tmp = atlas->temporary.alloc(atlas->temporary.userdata,0, tmp_size);
    NK_ASSERT(tmp);
    if (!tmp) goto failed;
    NK_MEMSET(tmp,0,tmp_size);
 
    /* allocate glyph memory for all fonts */
    baker = nk_font_baker(tmp, atlas->glyph_count, atlas->font_num, &atlas->temporary);
    atlas->glyphs = (struct nk_font_glyph*)atlas->permanent.alloc(
        atlas->permanent.userdata,0, sizeof(struct nk_font_glyph)*(nk_size)atlas->glyph_count);
    NK_ASSERT(atlas->glyphs);
    if (!atlas->glyphs)
        goto failed;
 
    /* pack all glyphs into a tight fit space */
    atlas->custom.w = (NK_CURSOR_DATA_W*2)+1;
    atlas->custom.h = NK_CURSOR_DATA_H + 1;
    if (!nk_font_bake_pack(baker, &img_size, width, height, &atlas->custom,
        atlas->config, atlas->font_num, &atlas->temporary))
        goto failed;
 
    /* allocate memory for the baked image font atlas */
    atlas->pixel = atlas->temporary.alloc(atlas->temporary.userdata,0, img_size);
    NK_ASSERT(atlas->pixel);
    if (!atlas->pixel)
        goto failed;
 
    /* bake glyphs and custom white pixel into image */
    nk_font_bake(baker, atlas->pixel, *width, *height,
        atlas->glyphs, atlas->glyph_count, atlas->config, atlas->font_num);
    nk_font_bake_custom_data(atlas->pixel, *width, *height, atlas->custom,
            nk_custom_cursor_data, NK_CURSOR_DATA_W, NK_CURSOR_DATA_H, '.', 'X');
 
    if (fmt == NK_FONT_ATLAS_RGBA32) {
        /* convert alpha8 image into rgba32 image */
        void *img_rgba = atlas->temporary.alloc(atlas->temporary.userdata,0,
                            (nk_size)(*width * *height * 4));
        NK_ASSERT(img_rgba);
        if (!img_rgba) goto failed;
        nk_font_bake_convert(img_rgba, *width, *height, atlas->pixel);
        atlas->temporary.free(atlas->temporary.userdata, atlas->pixel);
        atlas->pixel = img_rgba;
    }
    atlas->tex_width = *width;
    atlas->tex_height = *height;
 
    /* initialize each font */
    for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) {
        struct nk_font *font = font_iter;
        struct nk_font_config *config = font->config;
        nk_font_init(font, config->size, config->fallback_glyph, atlas->glyphs,
            config->font, nk_handle_ptr(0));
    }
 
    /* initialize each cursor */
    {NK_STORAGE const struct nk_vec2 nk_cursor_data[NK_CURSOR_COUNT][3] = {
        /* Pos      Size        Offset */
        {{ 0, 3},   {12,19},    { 0, 0}},
        {{13, 0},   { 7,16},    { 4, 8}},
        {{31, 0},   {23,23},    {11,11}},
        {{21, 0},   { 9, 23},   { 5,11}},
        {{55,18},   {23, 9},    {11, 5}},
        {{73, 0},   {17,17},    { 9, 9}},
        {{55, 0},   {17,17},    { 9, 9}}
    };
    for (i = 0; i < NK_CURSOR_COUNT; ++i) {
        struct nk_cursor *cursor = &atlas->cursors[i];
        cursor->img.w = (unsigned short)*width;
        cursor->img.h = (unsigned short)*height;
        cursor->img.region[0] = (unsigned short)(atlas->custom.x + nk_cursor_data[i][0].x);
        cursor->img.region[1] = (unsigned short)(atlas->custom.y + nk_cursor_data[i][0].y);
        cursor->img.region[2] = (unsigned short)nk_cursor_data[i][1].x;
        cursor->img.region[3] = (unsigned short)nk_cursor_data[i][1].y;
        cursor->size = nk_cursor_data[i][1];
        cursor->offset = nk_cursor_data[i][2];
    }}
    /* free temporary memory */
    atlas->temporary.free(atlas->temporary.userdata, tmp);
    return atlas->pixel;
 
failed:
    /* error so cleanup all memory */
    if (tmp) atlas->temporary.free(atlas->temporary.userdata, tmp);
    if (atlas->glyphs) {
        atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs);
        atlas->glyphs = 0;
    }
    if (atlas->pixel) {
        atlas->temporary.free(atlas->temporary.userdata, atlas->pixel);
        atlas->pixel = 0;
    }
    return 0;
}
NK_API void
nk_font_atlas_end(struct nk_font_atlas *atlas, nk_handle texture,
    struct nk_draw_null_texture *tex_null)
{
    int i = 0;
    struct nk_font *font_iter;
    NK_ASSERT(atlas);
    if (!atlas) {
        if (!tex_null) return;
        tex_null->texture = texture;
        tex_null->uv = nk_vec2(0.5f,0.5f);
    }
    if (tex_null) {
        tex_null->texture = texture;
        tex_null->uv.x = (atlas->custom.x + 0.5f)/(float)atlas->tex_width;
        tex_null->uv.y = (atlas->custom.y + 0.5f)/(float)atlas->tex_height;
    }
    for (font_iter = atlas->fonts; font_iter; font_iter = font_iter->next) {
        font_iter->texture = texture;
#ifdef NK_INCLUDE_VERTEX_BUFFER_OUTPUT
        font_iter->handle.texture = texture;
#endif
    }
    for (i = 0; i < NK_CURSOR_COUNT; ++i)
        atlas->cursors[i].img.handle = texture;
 
    atlas->temporary.free(atlas->temporary.userdata, atlas->pixel);
    atlas->pixel = 0;
    atlas->tex_width = 0;
    atlas->tex_height = 0;
    atlas->custom.x = 0;
    atlas->custom.y = 0;
    atlas->custom.w = 0;
    atlas->custom.h = 0;
}
NK_API void
nk_font_atlas_cleanup(struct nk_font_atlas *atlas)
{
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
    if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return;
    if (atlas->config) {
        struct nk_font_config *iter;
        for (iter = atlas->config; iter; iter = iter->next) {
            struct nk_font_config *i;
            for (i = iter->n; i != iter; i = i->n) {
                atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob);
                i->ttf_blob = 0;
            }
            atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob);
            iter->ttf_blob = 0;
        }
    }
}
NK_API void
nk_font_atlas_clear(struct nk_font_atlas *atlas)
{
    NK_ASSERT(atlas);
    NK_ASSERT(atlas->temporary.alloc);
    NK_ASSERT(atlas->temporary.free);
    NK_ASSERT(atlas->permanent.alloc);
    NK_ASSERT(atlas->permanent.free);
    if (!atlas || !atlas->permanent.alloc || !atlas->permanent.free) return;
 
    if (atlas->config) {
        struct nk_font_config *iter, *next;
        for (iter = atlas->config; iter; iter = next) {
            struct nk_font_config *i, *n;
            for (i = iter->n; i != iter; i = n) {
                n = i->n;
                if (i->ttf_blob)
                    atlas->permanent.free(atlas->permanent.userdata, i->ttf_blob);
                atlas->permanent.free(atlas->permanent.userdata, i);
            }
            next = iter->next;
            if (i->ttf_blob)
                atlas->permanent.free(atlas->permanent.userdata, iter->ttf_blob);
            atlas->permanent.free(atlas->permanent.userdata, iter);
        }
        atlas->config = 0;
    }
    if (atlas->fonts) {
        struct nk_font *iter, *next;
        for (iter = atlas->fonts; iter; iter = next) {
            next = iter->next;
            atlas->permanent.free(atlas->permanent.userdata, iter);
        }
        atlas->fonts = 0;
    }
    if (atlas->glyphs)
        atlas->permanent.free(atlas->permanent.userdata, atlas->glyphs);
    nk_zero_struct(*atlas);
}
#endif