/* Copyright (c) 2015 vurtun MIT licence */ #include "gui.h" #ifndef NDEBUG #include #else #define assert(expr) #endif #define NULL (void*)0 #define UTF_INVALID 0xFFFD #define MAX_NUMBER_BUFFER 64 #define PASTE(a,b) a##b #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) < (b) ? (b) : (a)) #define CLAMP(i,v,x) (MAX(MIN(v,x), i)) #define SATURATE(x) (MAX(0, MIN(1.0f, x))) #define LEN(a) (sizeof(a)/sizeof(a)[0]) #define ABS(a) (((a) < 0) ? -(a) : (a)) #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b)) #define INBOX(px, py, x, y, w, h) (BETWEEN(px, x, x+w) && BETWEEN(py, y, y+h)) #define ALIGNOF(t) ((char*)(&((struct {char c; t _h;}*)0)->_h) - (char*)0) #define ALIGN(x, mask) (void*)((gui_size)((gui_byte*)(x) + (mask-1)) & ~(mask-1)) #define col_load(c,j,k,l,m) (c).r = (j), (c).g = (k), (c).b = (l), (c).a = (m) #define vec2_load(v,a,b) (v).x = (a), (v).y = (b) #define vec2_mov(to,from) (to).x = (from).x, (to).y = (from).y #define vec2_len(v) ((float)fsqrt((v).x*(v).x+(v).y*(v).y)) #define vec2_sub(r,a,b) do {(r).x=(a).x-(b).x; (r).y=(a).y-(b).y;} while(0) #define vec2_muls(r, v, s) do {(r).x=(v).x*(s); (r).y=(v).y*(s);} while(0) struct gui_context_panel { struct gui_panel panel; gui_float x, y, w, h; struct gui_draw_call_list list; struct gui_context_panel *next; struct gui_context_panel *prev; }; struct gui_context { gui_float width, height; struct gui_draw_buffer global_buffer; struct gui_draw_buffer current_buffer; const struct gui_input *input; struct gui_context_panel *active; struct gui_context_panel *panel_pool; struct gui_context_panel *free_list; struct gui_context_panel *stack_begin; struct gui_context_panel *stack_end; struct gui_draw_call_list **output_list; gui_size panel_capacity; gui_size panel_size; }; static const gui_texture null_tex; static const struct gui_rect null_rect = {0.0f, 0.0f, 9999.0f, 9999.0f}; static const gui_char utfbyte[GUI_UTF_SIZE+1] = {0x80, 0, 0xC0, 0xE0, 0xF0}; static const gui_char utfmask[GUI_UTF_SIZE+1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; static const long utfmin[GUI_UTF_SIZE+1] = {0, 0, 0x80, 0x800, 0x100000}; static const long utfmax[GUI_UTF_SIZE+1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; static gui_float fsqrt(float x) { float xhalf = 0.5f*x; union {float f; long i;} val; val.i = 0; val.f = ABS(x); val.i = 0x5f375a86 - (val.i >> 1); val.f = val.f * (1.5f - xhalf * val.f * val.f); return 1.0f/val.f; } static void* memcopy(void *dst, const void *src, gui_size size) { gui_size i = 0; char *d = dst; const char *s = src; for (i = 0; i < size; ++i) d[i] = s[i]; return dst; } static gui_size strsiz(const char *str) { gui_size siz = 0; while (str && *str++ != '\0') siz++; return siz; } static gui_int strtoi(gui_int *number, const char *buffer, gui_size len) { gui_size i; if (!number || !buffer) return 0; *number = 0; for (i = 0; i < len; ++i) *number = *number * 10 + (buffer[i] - '0'); return 1; } static gui_size itos(char *buffer, gui_int num) { static const char digit[] = "0123456789"; gui_int shifter; gui_size len = 0; char *p = buffer; if (!buffer) return 0; if (num < 0) { num = ABS(num); *p++ = '-'; } shifter = num; do { ++p; shifter = shifter/10; } while (shifter); *p = '\0'; len = (gui_size)(p - buffer); do { *--p = digit[num % 10]; num = num / 10; } while (num); return len; } static struct gui_rect unify(const struct gui_rect *a, const struct gui_rect *b) { struct gui_rect clip; clip.x = MAX(a->x, b->x); clip.y = MAX(a->y, b->y); clip.w = MIN(a->x + a->w, b->x + b->w) - clip.x; clip.h = MIN(a->y + a->h, b->y + b->h) - clip.y; clip.w = MAX(0, clip.w); clip.h = MAX(0, clip.h); return clip; } static gui_size utf_validate(long *u, gui_size i) { if (!u) return 0; if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF)) *u = UTF_INVALID; for (i = 1; *u > utfmax[i]; ++i); return i; } static gui_long utf_decode_byte(gui_char c, gui_size *i) { if (!i) return 0; for(*i = 0; *i < LEN(utfmask); ++(*i)) { if ((c & utfmask[*i]) == utfbyte[*i]) return c & ~utfmask[*i]; } return 0; } static gui_size utf_decode(const gui_char *c, gui_long *u, gui_size clen) { gui_size i, j, len, type; gui_long udecoded; *u = UTF_INVALID; if (!c || !u) return 0; if (!clen) return 0; udecoded = utf_decode_byte(c[0], &len); if (!BETWEEN(len, 1, GUI_UTF_SIZE)) return 1; for (i = 1, j = 1; i < clen && j < len; ++i, ++j) { udecoded = (udecoded << 6) | utf_decode_byte(c[i], &type); if (type != 0) return j; } if (j < len) return 0; *u = udecoded; utf_validate(u, len); return len; } static gui_char utf_encode_byte(gui_long u, gui_size i) { return (gui_char)(utfbyte[i] | (u & ~utfmask[i])); } static gui_size utf_encode(gui_long u, gui_char *c, gui_size clen) { gui_size len, i; len = utf_validate(&u, 0); if (clen < len || !len) return 0; for (i = len - 1; i != 0; --i) { c[i] = utf_encode_byte(u, 0); u >>= 6; } c[0] = utf_encode_byte(u, len); return len; } static void gui_triangle_from_direction(struct gui_vec2 *result, gui_float x, gui_float y, gui_float w, gui_float h, gui_float pad_x, gui_float pad_y, enum gui_heading direction) { gui_float w_half, h_half; assert(result); w = MAX(4 * pad_x, w); h = MAX(4 * pad_y, h); w = w - 2 * pad_x; h = h - 2 * pad_y; w_half = w / 2.0f; h_half = h / 2.0f; x = x + pad_x; y = y + pad_y; if (direction == GUI_UP) { result[0].x = x + w_half; result[0].y = y; result[1].x = x; result[1].y = y + h; result[2].x = x + w; result[2].y = y + h; } else if (direction == GUI_RIGHT) { result[0].x = x; result[0].y = y; result[1].x = x; result[1].y = y + h; result[2].x = x + w; result[2].y = y + h_half; } else if (direction == GUI_DOWN) { result[0].x = x; result[0].y = y; result[1].x = x + w_half; result[1].y = y + h; result[2].x = x + w; result[2].y = y; } else { result[0].x = x; result[0].y = y + h_half; result[1].x = x + w; result[1].y = y + h; result[2].x = x + w; result[2].y = y; } } void gui_input_begin(struct gui_input *in) { gui_size i; assert(in); if (!in) return; in->mouse_clicked = 0; in->text_len = 0; vec2_mov(in->mouse_prev, in->mouse_pos); for (i = 0; i < GUI_KEY_MAX; i++) in->keys[i].clicked = 0; } void gui_input_motion(struct gui_input *in, gui_int x, gui_int y) { assert(in); in->mouse_pos.x = (gui_float)x; in->mouse_pos.y = (gui_float)y; } void gui_input_key(struct gui_input *in, enum gui_keys key, gui_bool down) { assert(in); if (!in) return; if (in->keys[key].down == down) return; in->keys[key].down = down; in->keys[key].clicked++; } void gui_input_button(struct gui_input *in, gui_int x, gui_int y, gui_bool down) { assert(in); if (!in) return; if (in->mouse_down == down) return; in->mouse_clicked_pos.x = (gui_float)x; in->mouse_clicked_pos.y = (gui_float)y; in->mouse_down = down; in->mouse_clicked++; } void gui_input_char(struct gui_input *in, const gui_glyph glyph) { gui_size len = 0; gui_long unicode; assert(in); if (!in) return; len = utf_decode(glyph, &unicode, GUI_UTF_SIZE); if (len && ((in->text_len + len) < GUI_INPUT_MAX)) { utf_encode(unicode, &in->text[in->text_len], GUI_INPUT_MAX - in->text_len); in->text_len += len; } } void gui_input_end(struct gui_input *in) { assert(in); if (!in) return; vec2_sub(in->mouse_delta, in->mouse_pos, in->mouse_prev); } static gui_size gui_font_text_width(const struct gui_font *font, const gui_char *t, gui_size l) { gui_long unicode; gui_size text_width = 0; const struct gui_font_glyph *glyph; gui_size text_len = 0; gui_size glyph_len; assert(font); if (!t || !l) return 0; glyph_len = utf_decode(t, &unicode, l); while (text_len <= l && glyph_len) { if (unicode == UTF_INVALID) return 0; glyph = (unicode < font->glyph_count) ? &font->glyphes[unicode] : font->fallback; glyph = (glyph->code == 0) ? font->fallback : glyph; text_width += (gui_size)(glyph->xadvance * font->scale); glyph_len = utf_decode(t + text_len, &unicode, l - text_len); text_len += glyph_len; } return text_width; } static gui_size gui_font_chars_in_space(const struct gui_font *font, const gui_char *text, gui_size len, gui_float space) { const struct gui_font_glyph *glyph; gui_size chars = 0; gui_long unicode; gui_size text_width = 0; gui_size text_len = 0; gui_size glyph_len; assert(font); assert(text); assert(len); if (!text || !len) return 0; glyph_len = utf_decode(text, &unicode, len); while (text_len <= len && glyph_len) { if (unicode == UTF_INVALID) return 0; glyph = (unicode < font->glyph_count) ? &font->glyphes[unicode] : font->fallback; glyph = (glyph->code == 0) ? font->fallback : glyph; text_width += (gui_size)(glyph->xadvance * font->scale); if (text_width >= space) break; glyph_len = utf_decode(text + text_len, &unicode, len - text_len); text_len += glyph_len; chars += glyph_len; } return chars; } void gui_output_begin(struct gui_draw_buffer *buffer, const struct gui_memory *memory) { void *cmds; void *clips; void *aligned; gui_size vertex_size; gui_size command_size; gui_size clip_size; gui_long alignment; static const gui_size align_cmd = ALIGNOF(struct gui_draw_command); static const gui_size align_clip = ALIGNOF(struct gui_rect); assert(buffer); assert(memory); assert((memory->vertex_percentage+memory->command_percentage+memory->clip_percentage) <= 1.0f); if (!buffer || !memory) return; if ((memory->vertex_percentage + memory->command_percentage + memory->clip_percentage) > 1.0f) return; vertex_size = (gui_size)((gui_float)memory->size * SATURATE(memory->vertex_percentage)); command_size = (gui_size)((gui_float)memory->size * SATURATE(memory->command_percentage)); clip_size = (gui_size)((gui_float)memory->size * SATURATE(memory->clip_percentage)); cmds = (gui_byte*)memory->memory + vertex_size; aligned = ALIGN(cmds, align_cmd); alignment = (gui_byte*)aligned - (gui_byte*)cmds; cmds = aligned; clips = (gui_byte*)memory->memory + vertex_size + command_size + alignment; clips = ALIGN(clips, align_clip); buffer->vertex_capacity = vertex_size / sizeof(struct gui_vertex); buffer->command_capacity = command_size / sizeof(struct gui_draw_command); buffer->clip_capacity = clip_size / sizeof(struct gui_rect); buffer->vertex_capacity = (gui_size)MAX(0, (gui_int)vertex_size - 1); buffer->command_capacity = (gui_size)MAX(0, (gui_int)command_size - 1); buffer->clip_capacity = (gui_size)MAX(0, (gui_int)clip_size - 1); buffer->vertexes = memory->memory; buffer->commands = cmds; buffer->clips = clips; buffer->command_size = 0; buffer->command_needed = 0; buffer->vertex_size = 0; buffer->vertex_needed = 0; buffer->clip_size = 0; buffer->clip_needed = 0; } void gui_output_end(struct gui_draw_buffer *buffer, struct gui_draw_call_list *list, struct gui_memory_status* status) { assert(buffer); if (!buffer) return; if (status) { static const gui_size vertsize = sizeof(struct gui_vertex); static const gui_size cmdsize = sizeof(struct gui_draw_command); static const gui_size recsize = sizeof(struct gui_rect); status->vertexes_allocated = buffer->vertex_size * vertsize; status->vertexes_needed = buffer->vertex_needed * vertsize; status->commands_allocated = buffer->command_size * cmdsize; status->commands_needed = buffer->command_needed *cmdsize; status->clips_allocated = buffer->clip_size * recsize; status->clips_needed = buffer->clip_needed * recsize; status->allocated = status->vertexes_allocated; status->allocated += status->commands_allocated; status->allocated += status->clips_allocated; status->needed = status->vertexes_needed; status->needed += status->commands_needed; status->needed += status->clips_needed; } if (list) { list->vertexes = buffer->vertexes; list->vertex_size = buffer->vertex_size; list->commands = buffer->commands; list->command_size = buffer->command_size; } buffer->vertex_size = 0; buffer->vertex_needed = 0; buffer->command_size = 0; buffer->command_needed = 0; buffer->clip_size = 0; buffer->clip_needed = 0; } static gui_int gui_push_clip(struct gui_draw_buffer *buffer, const struct gui_rect *rect) { struct gui_rect clip; assert(buffer); assert(rect); buffer->clip_needed += sizeof(struct gui_rect); if (!buffer || !rect || buffer->clip_size >= buffer->clip_capacity) return gui_false; clip = unify(rect, (!buffer->clip_size) ? &null_rect : &buffer->clips[buffer->clip_size-1]); buffer->clips[buffer->clip_size] = clip; buffer->clip_size++; return gui_true; } static void gui_pop_clip(struct gui_draw_buffer *buffer) { assert(buffer); if (!buffer || !buffer->clip_capacity) return; if (buffer->clip_size == 0) { buffer->clips[buffer->clip_size] = null_rect; buffer->clip_size = 1; } else { buffer->clip_size--; } } static gui_int gui_push_command(struct gui_draw_buffer *buffer, gui_size count, gui_texture tex) { struct gui_draw_command *cmd; const struct gui_rect *clip; assert(buffer); assert(count); if (!buffer || !count) return gui_false; buffer->vertex_needed += count * sizeof(struct gui_vertex); buffer->command_needed += sizeof(struct gui_draw_command); if (!buffer->commands || buffer->command_size >= buffer->command_capacity || !buffer->command_capacity) return gui_false; if (!buffer->vertexes || buffer->vertex_size >= buffer->vertex_capacity || !buffer->vertex_capacity) return gui_false; cmd = &buffer->commands[buffer->command_size++]; clip = (buffer->clip_size) ? &buffer->clips[buffer->clip_size-1] : &null_rect; cmd->vertex_count = count; cmd->clip_rect = *clip; cmd->texture = tex; return gui_true; } static void gui_push_vertex(struct gui_draw_buffer *buffer, gui_float x, gui_float y, struct gui_color col, gui_float u, gui_float v) { struct gui_vertex *vertex; assert(buffer); if (!buffer) return; if (!buffer->vertexes || !buffer->vertex_capacity || buffer->vertex_size >= buffer->vertex_capacity) return; vertex = &buffer->vertexes[buffer->vertex_size++]; vertex->color = col; vertex->pos.x = x; vertex->pos.y = y; vertex->uv.u = u; vertex->uv.v = v; } static void gui_vertex_line(struct gui_draw_buffer* buffer, gui_float x0, gui_float y0, gui_float x1, gui_float y1, struct gui_color col) { gui_float len; struct gui_vec2 a, b, d; struct gui_vec2 hn, hp0, hp1; assert(buffer); if (!buffer) return; vec2_load(a, x0, y0); vec2_load(b, x1, y1); vec2_sub(d, b, a); len = 0.5f / vec2_len(d); vec2_muls(hn, d, len); vec2_load(hp0, +hn.y, -hn.x); vec2_load(hp1, -hn.y, +hn.x); gui_push_vertex(buffer, a.x + hp0.x, a.y + hp0.y, col, 0.0f, 0.0f); gui_push_vertex(buffer, b.x + hp0.x, b.y + hp0.y, col, 0.0f, 0.0f); gui_push_vertex(buffer, a.x + hp1.x, a.y + hp1.y, col, 0.0f, 0.0f); gui_push_vertex(buffer, b.x + hp0.x, b.y + hp0.y, col, 0.0f, 0.0f); gui_push_vertex(buffer, b.x + hp1.x, b.y + hp1.y, col, 0.0f, 0.0f); gui_push_vertex(buffer, a.x + hp1.x, a.y + hp1.y, col, 0.0f, 0.0f); } static void gui_draw_line(struct gui_draw_buffer *buffer, gui_float x0, gui_float y0, gui_float x1, gui_float y1, struct gui_color col) { assert(buffer); if (!buffer) return; if (col.a == 0) return; if (!gui_push_command(buffer, 6, null_tex)) return; gui_vertex_line(buffer, x0, y0, x1, y1, col); } static void gui_draw_trianglef(struct gui_draw_buffer *buffer, gui_float x0, gui_float y0, gui_float x1, gui_float y1, gui_float x2, gui_float y2, struct gui_color c) { assert(buffer); if (!buffer) return; if (c.a == 0) return; if (!gui_push_command(buffer, 3, null_tex)) return; gui_push_vertex(buffer, x0, y0, c, 0.0f, 0.0f); gui_push_vertex(buffer, x1, y1, c, 0.0f, 0.0f); gui_push_vertex(buffer, x2, y2, c, 0.0f, 0.0f); } static void gui_draw_rect(struct gui_draw_buffer *buffer, gui_float x, gui_float y, gui_float w, gui_float h, struct gui_color col) { assert(buffer); if (!buffer) return; if (col.a == 0) return; if (!gui_push_command(buffer, 6 * 4, null_tex)) return; gui_vertex_line(buffer, x, y, x + w, y, col); gui_vertex_line(buffer, x + w, y, x + w, y + h, col); gui_vertex_line(buffer, x + w, y + h, x, y + h, col); gui_vertex_line(buffer, x, y + h, x, y, col); } static void gui_draw_rectf(struct gui_draw_buffer *buffer, gui_float x, gui_float y, gui_float w, gui_float h, struct gui_color col) { assert(buffer); if (!buffer) return; if (col.a == 0) return; if (!gui_push_command(buffer, 6, null_tex)) return; gui_push_vertex(buffer, x, y, col, 0.0f, 0.0f); gui_push_vertex(buffer, x + w, y, col, 0.0f, 0.0f); gui_push_vertex(buffer, x + w, y + h, col, 0.0f, 0.0f); gui_push_vertex(buffer, x, y, col, 0.0f, 0.0f); gui_push_vertex(buffer, x + w, y + h, col, 0.0f, 0.0f); gui_push_vertex(buffer, x, y + h, col, 0.0f, 0.0f); } static void gui_draw_diamondf(struct gui_draw_buffer *buffer, gui_float x, gui_float y, gui_float w, gui_float h, struct gui_color col) { gui_float wh; gui_float hh; assert(buffer); if (!buffer) return; if (col.a == 0) return; if (!gui_push_command(buffer, 6, null_tex)) return; wh = w * 0.5f; hh = h * 0.5f; gui_push_vertex(buffer, x+wh, y, col, 0.0f, 0.0f); gui_push_vertex(buffer, x+w, y+hh, col, 0.0f, 0.0f); gui_push_vertex(buffer, x+wh, y+h, col, 0.0f, 0.0f); gui_push_vertex(buffer, x+wh, y, col, 0.0f, 0.0f); gui_push_vertex(buffer, x+wh, y+h, col, 0.0f, 0.0f); gui_push_vertex(buffer, x, y + hh, col, 0.0f, 0.0f); } static void gui_draw_string(struct gui_draw_buffer *buffer, const struct gui_font *font, gui_float x, gui_float y, gui_float w, gui_float h, struct gui_color col, const gui_char *text, gui_size len) { struct gui_rect clip; gui_size text_len; gui_long unicode; const struct gui_font_glyph *g; assert(buffer); assert(text); assert(font); if (!buffer || !text || !font || !len) return; clip.x = x; clip.y = y; clip.w = w; clip.h = h; if (!gui_push_clip(buffer, &clip)) return; if (!gui_push_command(buffer, 6 * len, font->texture)) { gui_pop_clip(buffer); return; } text_len = utf_decode(text, &unicode, len); while (text_len <= len) { gui_float x1, y1, x2, y2, char_width = 0; if (unicode == UTF_INVALID) break; g = (unicode < font->glyph_count) ? &font->glyphes[unicode] : font->fallback; g = (g->code == 0) ? font->fallback : g; y1 = (gui_float)(y + (g->yoff * font->scale)); y2 = (gui_float)(y1 + (gui_float)g->height * font->scale); x1 = (gui_float)(x + g->xoff * font->scale); x2 = (gui_float)(x1 + (gui_float)g->width * font->scale); char_width = g->xadvance * font->scale; gui_push_vertex(buffer, x1, y1, col, g->uv[0].u, g->uv[0].v); gui_push_vertex(buffer, x2, y1, col, g->uv[1].u, g->uv[0].v); gui_push_vertex(buffer, x2, y2, col, g->uv[1].u, g->uv[1].v); gui_push_vertex(buffer, x1, y1, col, g->uv[0].u, g->uv[0].v); gui_push_vertex(buffer, x2, y2, col, g->uv[1].u, g->uv[1].v); gui_push_vertex(buffer, x1, y2, col, g->uv[0].u, g->uv[1].v); text_len += utf_decode(text + text_len, &unicode, len - text_len); x += char_width; } gui_pop_clip(buffer); } static void gui_draw_image(struct gui_draw_buffer *buffer, gui_float x, gui_float y, gui_float w, gui_float h, gui_texture texture, struct gui_texCoord from, struct gui_texCoord to, struct gui_color col) { assert(buffer); if (!gui_push_command(buffer, 6, texture)) return; gui_push_vertex(buffer, x, y, col, from.u, from.v); gui_push_vertex(buffer, x + w, y, col, to.u, from.v); gui_push_vertex(buffer, x + w, y + h, col, to.u, to.v); gui_push_vertex(buffer, x, y, col, from.u, from.v); gui_push_vertex(buffer, x + w, y + h, col, to.u, to.v); gui_push_vertex(buffer, x, y + h, col, from.u, to.v); } void gui_widget_text(struct gui_draw_buffer *buffer, const struct gui_text *text, const struct gui_font *font) { gui_float label_x; gui_float label_y; gui_float label_w; gui_float label_h; assert(buffer); assert(text); assert(font); if (!buffer || !text || !font) return; label_x = text->x + text->pad_x; label_y = text->y + text->pad_y; label_w = MAX(0, text->w - 2 * text->pad_x); label_h = MAX(0, text->h - 2 * text->pad_y); gui_draw_rectf(buffer, text->x, text->y, text->w, text->h, text->background); gui_draw_string(buffer, font, label_x, label_y, label_w, label_h, text->font, (const gui_char*)text->text, text->length); } gui_size gui_widget_text_wrap(struct gui_draw_buffer *buffer, const struct gui_text *text, const struct gui_font *font) { gui_size len = 0; gui_size lines = 0; gui_size chars = 0; gui_float label_x, label_y; gui_float label_w, label_h; gui_float space; if (!buffer || !text || !font) return 0; label_x = text->x + text->pad_x; label_y = text->y + text->pad_y; label_w = MAX(0, text->w - 2 * text->pad_x); label_h = MAX(0, text->h - 2 * text->pad_y); space = font->height + 2 * text->pad_y; chars = gui_font_chars_in_space(font, (const gui_char*)text->text, text->length, label_w); while (chars && label_h >= space) { lines++; gui_draw_string(buffer, font, label_x, label_y, label_w, space, text->font, (const gui_char*)text->text + len, chars); len += chars; label_h -= space; label_y += space; chars = gui_font_chars_in_space(font, (const gui_char*)text->text + chars, text->length - chars, label_w); } return lines; } void gui_widget_image(struct gui_draw_buffer *buffer, const struct gui_image *image) { gui_float image_x; gui_float image_y; gui_float image_w; gui_float image_h; assert(buffer); assert(image); if (!buffer || !image) return; image_x = image->x + image->pad_x; image_y = image->y + image->pad_y; image_w = MAX(0, image->w - 2 * image->pad_x); image_h = MAX(0, image->h - 2 * image->pad_y); gui_draw_rectf(buffer, image->x, image->y, image->w, image->h, image->background); gui_draw_image(buffer, image_x, image_y, image_w, image_h, image->texture, image->uv[0], image->uv[1], image->color); } static gui_bool gui_widget_button(struct gui_draw_buffer *buffer, const struct gui_button *button, const struct gui_input *in) { gui_bool ret = gui_false; struct gui_color background, highlight; assert(buffer); assert(button); if (!buffer || !button) return gui_false; background = button->background; if (in && INBOX(in->mouse_pos.x,in->mouse_pos.y,button->x,button->y,button->w,button->h)) { background = button->highlight; if (INBOX(in->mouse_clicked_pos.x, in->mouse_clicked_pos.y, button->x, button->y, button->w, button->h)) { if (button->behavior == GUI_BUTTON_SWITCH) ret = (in->mouse_down && in->mouse_clicked); else ret = in->mouse_down; } } gui_draw_rectf(buffer, button->x, button->y, button->w, button->h, background); gui_draw_rect(buffer, button->x+1, button->y+1, button->w-1, button->h-1, button->foreground); return ret; } gui_bool gui_widget_button_text(struct gui_draw_buffer *buffer, const struct gui_button *button, const char *text, gui_size length, const struct gui_font *font, const struct gui_input *in) { gui_bool ret = gui_false; gui_float label_x, label_y, label_w, label_h; struct gui_color font_color, background, highlight; gui_size text_width; gui_float button_w, button_h; assert(buffer); assert(button); assert(text); assert(font); if (!buffer || !button) return gui_false; font_color = button->content; button_w = MAX(button->w, font->height + 2 * button->pad_x); button_h = MAX(button->h, font->height + 2 * button->pad_y); if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, button->x, button->y, button_w, button_h)) font_color = button->highlight_content; ret = gui_widget_button(buffer, button, in); if (!font || !text || !length) return ret; text_width = gui_font_text_width(font, (const gui_char*)text, length); if (text_width > (button_w - 2.0f * button->pad_x)) { label_x = button->x + button->pad_x; label_y = button->y + button->pad_y; label_w = button_w - 2 * button->pad_x; label_h = button_h - 2 * button->pad_y; } else { label_w = button_w - 2 * button->pad_x; label_h = button_h - 2 * button->pad_y; label_x = button->x + (label_w - (gui_float)text_width) / 2; label_y = button->y + (label_h - font->height) / 2; } gui_draw_string(buffer, font, label_x, label_y, label_w, label_h, font_color, (const gui_char*)text, length); return ret; } gui_bool gui_widget_button_triangle(struct gui_draw_buffer *buffer, struct gui_button* button, enum gui_heading heading, const struct gui_input *in) { gui_bool pressed; struct gui_color col; struct gui_vec2 points[3]; pressed = gui_widget_button(buffer, button, in); gui_triangle_from_direction(points, button->x, button->y, button->w, button->h, button->pad_x, button->pad_y, heading); col = (in && INBOX(in->mouse_pos.x,in->mouse_pos.y,button->x,button->y,button->w,button->h)) ? button->highlight_content : button->foreground; gui_draw_trianglef(buffer, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y, col); return pressed; } gui_bool gui_widget_button_icon(struct gui_draw_buffer *buffer, struct gui_button* button, gui_texture tex, struct gui_texCoord from, struct gui_texCoord to, const struct gui_input *in) { gui_bool pressed; struct gui_image image; struct gui_color col; const struct gui_color color = {255,255,255,255}; assert(buffer); assert(button); if (!buffer || !button) return gui_false; pressed = gui_widget_button(buffer, button, in); image.x = button->x + button->pad_x; image.y = button->y + button->pad_y; image.w = button->w - 2 * button->pad_x; image.h = button->h - 2 * button->pad_y; image.pad_x = button->pad_x; image.pad_y = button->pad_y; image.texture = tex; image.uv[0] = from; image.uv[1] = to; col = (in && INBOX(in->mouse_pos.x,in->mouse_pos.y,button->x,button->y,button->w,button->h)) ? button->highlight: button->background; image.background = col; image.color = color; gui_widget_image(buffer, &image); return pressed; } gui_bool gui_widget_toggle(struct gui_draw_buffer *buffer, const struct gui_toggle *toggle, const struct gui_font *font, const struct gui_input *in) { typedef void(*draw_f)(struct gui_draw_buffer*,gui_float,gui_float, gui_float, gui_float, struct gui_color); static const draw_f gui_draw_function[] = {gui_draw_rectf, gui_draw_diamondf}; gui_bool toggle_active; gui_float select_size; gui_float toggle_w, toggle_h; gui_float select_x, select_y; gui_float cursor_x, cursor_y; gui_float cursor_pad, cursor_size; assert(buffer); assert(toggle); assert(font); if (!buffer || !toggle || !font) return 0; toggle_w = MAX(toggle->w, font->height + 2 * toggle->pad_x); toggle_h = MAX(toggle->h, font->height + 2 * toggle->pad_y); toggle_active = toggle->active; select_x = toggle->x + toggle->pad_x; select_y = toggle->y + toggle->pad_y; select_size = font->height; cursor_pad = select_size / 8; cursor_x = select_x + cursor_pad; cursor_y = select_y + cursor_pad; cursor_size = select_size - 2 * cursor_pad; if (in && !in->mouse_down && in->mouse_clicked) { if (INBOX(in->mouse_clicked_pos.x, in->mouse_clicked_pos.y, cursor_x, cursor_y, cursor_size, cursor_size)) toggle_active = !toggle_active; } gui_draw_function[toggle->type](buffer, select_x, select_y, select_size, select_size, toggle->background); if (toggle_active) gui_draw_function[toggle->type](buffer, cursor_x, cursor_y, cursor_size, cursor_size, toggle->foreground); if (font && toggle->text && toggle->length) { gui_float label_x, label_w; label_x = toggle->x + select_size + toggle->pad_x * 2; label_w = toggle_w - select_size + 3 * toggle->pad_x; gui_draw_string(buffer, font, label_x, toggle->y + toggle->pad_y, label_w, toggle_h - 2 * toggle->pad_y, toggle->font, toggle->text, toggle->length); } return toggle_active; } gui_float gui_widget_slider(struct gui_draw_buffer *buffer, const struct gui_slider *slider, const struct gui_input *in) { gui_float slider_min, slider_max; gui_float slider_value, slider_steps; gui_float slider_w, slider_h; gui_float cursor_x, cursor_y; gui_float cursor_w, cursor_h; assert(buffer); assert(slider); if (!buffer || !slider) return 0; slider_w = MAX(slider->w, 2 * slider->pad_x); slider_h = MAX(slider->h, 2 * slider->pad_y); slider_max = MAX(slider->min, slider->max); slider_min = MIN(slider->min, slider->max); slider_value = CLAMP(slider_min, slider->value, slider_max); slider_steps = (slider_max - slider_min) / slider->step; cursor_w = (slider_w - 2 * slider->pad_x); cursor_w = cursor_w / (((slider_max - slider_min) + slider->step) / slider->step); cursor_h = slider_h - 2 * slider->pad_y; cursor_x = slider->x + slider->pad_x + (cursor_w * (slider_value - slider_min)); cursor_y = slider->y + slider->pad_y; if (in && in->mouse_down && INBOX(in->mouse_pos.x, in->mouse_pos.y, slider->x, slider->y, slider_w, slider_h) && INBOX(in->mouse_clicked_pos.x,in->mouse_clicked_pos.y, slider->x, slider->y, slider_w, slider_h)) { const float d = in->mouse_pos.x - (cursor_x + cursor_w / 2.0f); const float pxstep = (slider_w - 2 * slider->pad_x) / slider_steps; if (ABS(d) >= pxstep) { slider_value += (d < 0) ? -slider->step : slider->step; slider_value = CLAMP(slider_min, slider_value, slider_max); cursor_x = slider->x + slider->pad_x + (cursor_w * (slider_value - slider_min)); } } gui_draw_rectf(buffer, slider->x, slider->y, slider_w, slider_h, slider->background); gui_draw_rectf(buffer, cursor_x, cursor_y, cursor_w, cursor_h, slider->foreground); return slider_value; } gui_float gui_widget_slider_vertical(struct gui_draw_buffer *buffer, const struct gui_slider *slider, const struct gui_input *in) { gui_float slider_min, slider_max; gui_float slider_value, slider_steps; gui_float slider_w, slider_h; gui_float cursor_x, cursor_y; gui_float cursor_w, cursor_h; assert(buffer); assert(slider); if (!buffer || !slider) return 0; slider_w = MAX(slider->w, 2 * slider->pad_x); slider_h = MAX(slider->h, 2 * slider->pad_y); slider_max = MAX(slider->min, slider->max); slider_min = MIN(slider->min, slider->max); slider_value = CLAMP(slider_min, slider->value, slider_max); slider_steps = (slider_max - slider_min) / slider->step; cursor_w = (slider_w - 2 * slider->pad_x); cursor_h = slider_h - 2 * slider->pad_y; cursor_h = cursor_h / (((slider_max - slider_min) + slider->step) / slider->step); cursor_y = slider->y + slider_h - slider->pad_y - (cursor_h * (slider_value - slider_min)); cursor_x = slider->x + slider->pad_x; if (in && in->mouse_down && INBOX(in->mouse_pos.x, in->mouse_pos.y, slider->x, slider->y, slider_w, slider_h) && INBOX(in->mouse_clicked_pos.x,in->mouse_clicked_pos.y, slider->x, slider->y, slider_w, slider_h)) { const float d = in->mouse_pos.y - (cursor_y + cursor_h / 2.0f); const float pxstep = (slider_h - 2 * slider->pad_y) / slider_steps; if (ABS(d) >= pxstep) { slider_value += (d > 0) ? -slider->step : slider->step; slider_value = CLAMP(slider_min, slider_value, slider_max); cursor_y = slider->y + slider_h - slider->pad_y; cursor_y -= (cursor_h * (slider_value - slider_min)); } } gui_draw_rectf(buffer, slider->x, slider->y, slider_w, slider_h, slider->background); gui_draw_rectf(buffer, cursor_x, cursor_y, cursor_w, cursor_h, slider->foreground); return slider_value; } gui_size gui_widget_progress(struct gui_draw_buffer *buffer, const struct gui_progress *prog, const struct gui_input *in) { gui_float prog_scale; gui_float cursor_x, cursor_y; gui_float cursor_w, cursor_h; gui_float prog_w, prog_h; gui_size prog_value; assert(buffer); assert(prog); if (!buffer || !prog) return 0; prog_w = MAX(prog->w, 2 * prog->pad_x + 1); prog_h = MAX(prog->h, 2 * prog->pad_y + 1); prog_value = MIN(prog->current, prog->max); if (in && prog->modifyable && in->mouse_down && INBOX(in->mouse_pos.x, in->mouse_pos.y, prog->x, prog->y, prog_w, prog_h)){ gui_float ratio = (gui_float)(in->mouse_pos.x - prog->x) / (gui_float)prog_w; prog_value = (gui_size)((gui_float)prog->max * ratio); } if (!prog->max) return prog_value; prog_value = MIN(prog_value, prog->max); prog_scale = (gui_float)prog_value / (gui_float)prog->max; cursor_h = prog_h - 2 * prog->pad_y; cursor_w = (prog_w - 2 * prog->pad_x) * prog_scale; cursor_x = prog->x + prog->pad_x; cursor_y = prog->y + prog->pad_y; gui_draw_rectf(buffer, prog->x, prog->y, prog_w, prog_h, prog->background); gui_draw_rectf(buffer, cursor_x, cursor_y, cursor_w, cursor_h, prog->foreground); return prog_value; } gui_size gui_widget_progress_vertical(struct gui_draw_buffer *buffer, const struct gui_progress *prog, const struct gui_input *in) { gui_float prog_scale; gui_float cursor_x, cursor_y; gui_float cursor_w, cursor_h; gui_float prog_w, prog_h; gui_size prog_value; assert(buffer); assert(prog); if (!buffer || !prog) return 0; prog_w = MAX(prog->w, 2 * prog->pad_x + 1); prog_h = MAX(prog->h, 2 * prog->pad_y + 1); prog_value = MIN(prog->current, prog->max); if (in && prog->modifyable && in->mouse_down && INBOX(in->mouse_pos.x, in->mouse_pos.y, prog->x, prog->y, prog_w, prog_h)){ gui_float ratio = (gui_float)(prog->y + prog->h - in->mouse_pos.y) / (gui_float)prog_h; prog_value = (gui_size)((gui_float)prog->max * ratio); } if (!prog->max) return prog_value; prog_value = MIN(prog_value, prog->max); prog_scale = (gui_float)prog_value / (gui_float)prog->max; cursor_w = prog_w - 2 * prog->pad_x; cursor_h = (prog_h - 2 * prog->pad_y) * prog_scale; cursor_x = prog->x + prog->pad_x; cursor_y = prog->y + prog->h - prog->pad_y - cursor_h; gui_draw_rectf(buffer, prog->x, prog->y, prog_w, prog_h, prog->background); gui_draw_rectf(buffer, cursor_x, cursor_y, cursor_w, cursor_h, prog->foreground); return prog_value; } static gui_bool gui_filter_input(gui_long unicode, gui_size len, enum gui_input_filter filter) { if (filter == GUI_INPUT_DEFAULT) { return gui_true; } else if (filter == GUI_INPUT_FLOAT) { if (len > 1) return gui_false; if ((unicode < '0' || unicode > '9') && unicode != '.' && unicode != '-') return gui_false; return gui_true; } else if (filter == GUI_INPUT_DEC) { if (len > 1) return gui_false; if (unicode < '0' || unicode > '9') return gui_false; return gui_true; } else if (filter == GUI_INPUT_HEX) { if (len > 1) return gui_false; if ((unicode < '0' || unicode > '9') && (unicode < 'a' || unicode > 'f') && (unicode < 'A' || unicode > 'B')) return gui_false; return gui_true; } else if (filter == GUI_INPUT_OCT) { if (len > 1) return gui_false; if (unicode < '0' || unicode > '7') return gui_false; return gui_true; } else if (filter == GUI_INPUT_BIN) { if (len > 1) return gui_false; if (unicode < '0' || unicode > '1') return gui_false; return gui_true; } return gui_false; } static gui_size gui_buffer_input(gui_char *buffer, gui_size length, gui_size max, enum gui_input_filter filter, const struct gui_input *in) { gui_long unicode; gui_size text_len = 0, glyph_len = 0; assert(buffer); assert(in); glyph_len = utf_decode(in->text, &unicode, in->text_len); while (glyph_len && (text_len + glyph_len) <= in->text_len && (length + text_len) < max) { if (gui_filter_input(unicode, glyph_len, filter)) { gui_size i = 0; for (i = 0; i < glyph_len; i++) buffer[length++] = in->text[text_len + i]; } text_len = text_len + glyph_len; glyph_len = utf_decode(in->text + text_len, &unicode, in->text_len - text_len); } return text_len; } gui_bool gui_widget_input(struct gui_draw_buffer *buf, gui_char *buffer, gui_size *length, const struct gui_input_field *input, const struct gui_font *font, const struct gui_input *in) { gui_float input_w, input_h; gui_bool input_active; assert(buf); assert(font); assert(input); assert(length); if (!buffer || !font || !input) return 0; input_w = MAX(input->w, 2 * input->pad_x); input_h = MAX(input->h, font->height); input_active = input->active; gui_draw_rectf(buf, input->x, input->y, input_w, input_h, input->background); gui_draw_rect(buf, input->x + 1, input->y, input_w - 1, input_h, input->foreground); if (in && in->mouse_clicked && in->mouse_down) { input_active = INBOX(in->mouse_pos.x, in->mouse_pos.y, input->x, input->y, input_w, input_h); } if (input_active && in) { const struct gui_key *del = &in->keys[GUI_KEY_DEL]; const struct gui_key *bs = &in->keys[GUI_KEY_BACKSPACE]; const struct gui_key *enter = &in->keys[GUI_KEY_ENTER]; const struct gui_key *esc = &in->keys[GUI_KEY_ESCAPE]; const struct gui_key *space = &in->keys[GUI_KEY_SPACE]; if ((del->down && del->clicked) || (bs->down && bs->clicked)) if (*length > 0) *length = *length - 1; if ((enter->down && enter->clicked) || (esc->down && esc->clicked)) input_active = gui_false; if ((space->down && space->clicked) && (*length < input->max)) buffer[(*length)++] = ' '; if (in->text_len && *length < input->max) *length += gui_buffer_input(buffer, *length, input->max, input->filter, in); } if (font && buffer && length) { gui_size offset = 0; gui_float label_x, label_y, label_h; gui_float label_w = input_w - 2 * input->pad_x; gui_size cursor_width = (gui_size)font->glyphes['x'].width; gui_size text_len = *length; gui_size text_width = gui_font_text_width(font, buffer, text_len); while (text_len && (text_width + cursor_width) > (gui_size)label_w) { gui_long unicode; offset += utf_decode(&buffer[offset], &unicode, text_len); text_len -= offset; text_width = gui_font_text_width(font, &buffer[offset], text_len); } label_x = input->x + input->pad_x; label_y = input->y + input->pad_y; label_h = input_h - 2 * input->pad_y; gui_draw_string(buf, font, label_x, label_y, label_w, label_h, input->font, &buffer[offset], text_len); if (input_active && input->show_cursor) { gui_draw_rectf(buf, label_x + (gui_float)text_width, label_y, (gui_float)cursor_width, label_h, input->foreground); } } return input_active; } gui_int gui_widget_plot(struct gui_draw_buffer *buffer, const struct gui_plot *plot, const struct gui_input *in) { gui_size i; gui_size plot_step; gui_float plot_w, plot_h; gui_int plot_selected = -1; gui_float plot_max_value, plot_min_value; gui_float plot_value_range, plot_value_ratio; gui_float canvas_x, canvas_y; gui_float canvas_w, canvas_h; gui_float plot_last_x; gui_float plot_last_y; struct gui_color col; assert(buffer); assert(plot); if (!buffer || !plot) return plot_selected; col = plot->foreground; plot_w = MAX(plot->w, 2 * plot->pad_x); plot_h = MAX(plot->h, 2 * plot->pad_y); gui_draw_rectf(buffer, plot->x, plot->y, plot_w, plot_h, plot->background); if (!plot->value_count) return plot_selected; plot_max_value = plot->values[0]; plot_min_value = plot->values[0]; for (i = 0; i < plot->value_count; ++i) { if (plot->values[i] > plot_max_value) plot_max_value = plot->values[i]; if (plot->values[i] < plot_min_value) plot_min_value = plot->values[i]; } canvas_x = plot->x + plot->pad_x; canvas_y = plot->y + plot->pad_y; canvas_w = MAX(1 + 2 * plot->pad_x, plot_w - 2 * plot->pad_x); canvas_h = MAX(1 + 2 * plot->pad_y, plot_h - 2 * plot->pad_y); plot_step = (gui_size)canvas_w / plot->value_count; plot_value_range = plot_max_value - plot_min_value; plot_value_ratio = (plot->values[0] - plot_min_value) / plot_value_range; plot_last_x = canvas_x; plot_last_y = (canvas_y + canvas_h) - plot_value_ratio * (gui_float)canvas_h; if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, plot_last_x-3, plot_last_y-3, 6, 6)) { plot_selected = (in->mouse_down && in->mouse_clicked) ? (gui_int)i : -1; col = plot->highlight; } gui_draw_rectf(buffer, plot_last_x - 3, plot_last_y - 3, 6, 6, col); for (i = 1; i < plot->value_count; i++) { gui_float plot_cur_x, plot_cur_y; plot_value_ratio = (plot->values[i] - plot_min_value) / plot_value_range; plot_cur_x = canvas_x + (gui_float)(plot_step * i); plot_cur_y = (canvas_y + canvas_h) - (plot_value_ratio * (gui_float)canvas_h); gui_draw_line(buffer, plot_last_x, plot_last_y, plot_cur_x, plot_cur_y, plot->foreground); if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, plot_cur_x-3, plot_cur_y-3, 6, 6)) { plot_selected = (in->mouse_down && in->mouse_clicked) ? (gui_int)i : plot_selected; col = plot->highlight; } else col = plot->foreground; gui_draw_rectf(buffer, plot_cur_x - 3, plot_cur_y - 3, 6, 6, col); plot_last_x = plot_cur_x, plot_last_y = plot_cur_y; } return plot_selected; } gui_int gui_widget_histo(struct gui_draw_buffer *buffer, const struct gui_histo *histo, const struct gui_input *in) { gui_size i; gui_int selected = -1; gui_float canvas_x, canvas_y; gui_float canvas_w, canvas_h; gui_float histo_max_value; gui_float histo_w, histo_h; gui_float item_w = 0.0f; assert(buffer); assert(histo); if (!buffer || !histo) return selected; histo_w = MAX(histo->w, 2 * histo->pad_x); histo_h = MAX(histo->h, 2 * histo->pad_y); gui_draw_rectf(buffer, histo->x, histo->y, histo_w, histo_h, histo->background); histo_max_value = histo->values[0]; for (i = 0; i < histo->value_count; ++i) { if (ABS(histo->values[i]) > histo_max_value) histo_max_value = histo->values[i]; } canvas_x = histo->x + histo->pad_x; canvas_y = histo->y + histo->pad_y; canvas_w = histo_w - 2 * histo->pad_x; canvas_h = histo_h - 2 * histo->pad_y; if (histo->value_count) { gui_float padding = (gui_float)(histo->value_count-1) * histo->pad_x; item_w = (canvas_w - padding) / (gui_float)(histo->value_count); } for (i = 0; i < histo->value_count; i++) { const gui_float histo_ratio = ABS(histo->values[i]) / histo_max_value; struct gui_color item_color = (histo->values[i] < 0) ? histo->negative: histo->foreground; const gui_float item_h = canvas_h * histo_ratio; const gui_float item_y = (canvas_y + canvas_h) - item_h; gui_float item_x = canvas_x + ((gui_float)i * item_w); item_x = item_x + ((gui_float)i * histo->pad_y); if (in && INBOX(in->mouse_pos.x, in->mouse_pos.y, item_x, item_y, item_w, item_h)) { selected = (in->mouse_down && in->mouse_clicked) ? (gui_int)i: selected; item_color = histo->highlight; } gui_draw_rectf(buffer, item_x, item_y, item_w, item_h, item_color); } return selected; } gui_float gui_widget_scroll(struct gui_draw_buffer *buffer, const struct gui_scroll *scroll, const struct gui_input *in) { gui_bool button_up_pressed; gui_bool button_down_pressed; struct gui_button button; gui_float scroll_step; gui_float scroll_offset; gui_float scroll_off, scroll_ratio; gui_float scroll_y, scroll_w, scroll_h; gui_float cursor_x, cursor_y; gui_float cursor_w, cursor_h; gui_bool inscroll, incursor; assert(buffer); assert(scroll); if (!buffer || !scroll) return 0; scroll_w = MAX(scroll->w, 0); scroll_h = MAX(scroll->h, 2 * scroll_w); gui_draw_rectf(buffer, scroll->x, scroll->y, scroll_w, scroll_h, scroll->background); gui_draw_rect(buffer, scroll->x, scroll->y, scroll_w, scroll_h, scroll->border); if (scroll->target <= scroll_h) return 0; button.x = scroll->x; button.y = scroll->y; button.w = scroll_w; button.h = scroll_w; button.pad_x = scroll_w / 4; button.pad_y = scroll_w / 4; button.background = scroll->foreground; button.foreground = scroll->background; button.highlight = scroll->foreground; button.behavior = GUI_BUTTON_SWITCH; button_up_pressed = gui_widget_button_triangle(buffer, &button, GUI_UP, in); button.y = scroll->y + scroll_h - button.h; button_down_pressed = gui_widget_button_triangle(buffer, &button, GUI_DOWN, in); scroll_h = scroll_h - 2 * button.h; scroll_y = scroll->y + button.h; scroll_step = MIN(scroll->step, scroll_h); scroll_offset = MIN(scroll->offset, scroll->target - scroll_h); scroll_ratio = scroll_h / scroll->target; scroll_off = scroll_offset / scroll->target; cursor_h = scroll_ratio * scroll_h; cursor_y = scroll_y + (scroll_off * scroll_h); cursor_w = scroll_w; cursor_x = scroll->x; if (in) { inscroll = INBOX(in->mouse_pos.x,in->mouse_pos.y,scroll->x,scroll->y,scroll_w,scroll_h); incursor = INBOX(in->mouse_prev.x,in->mouse_prev.y,cursor_x,cursor_y,cursor_w, cursor_h); if (in->mouse_down && inscroll && incursor) { const gui_float pixel = in->mouse_delta.y; const gui_float delta = (pixel / scroll_h) * scroll->target; scroll_offset = CLAMP(0, scroll_offset + delta, scroll->target - scroll_h); cursor_y += pixel; } else if (button_up_pressed || button_down_pressed) { scroll_offset = (button_down_pressed) ? MIN(scroll_offset + scroll_step, scroll->target - scroll_h): MAX(0, scroll_offset - scroll_step); scroll_off = scroll_offset / scroll->target; cursor_y = scroll_y + (scroll_off * scroll_h); } } gui_draw_rectf(buffer, cursor_x, cursor_y, cursor_w, cursor_h, scroll->foreground); gui_draw_rect(buffer, cursor_x+1, cursor_y, cursor_w-1, cursor_h, scroll->background); return scroll_offset; } void gui_default_config(struct gui_config *config) { if (!config) return; config->scrollbar_width = 16; vec2_load(config->panel_padding, 15.0f, 10.0f); vec2_load(config->panel_min_size, 64.0f, 64.0f); vec2_load(config->item_spacing, 8.0f, 8.0f); vec2_load(config->item_padding, 4.0f, 4.0f); vec2_load(config->scaler_size, 16.0f, 16.0f); col_load(config->colors[GUI_COLOR_TEXT], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_PANEL], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_BORDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_TITLEBAR], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_BUTTON], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_BUTTON_HOVER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_BUTTON_HOVER_FONT], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_BUTTON_BORDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_CHECK], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_CHECK_ACTIVE], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_OPTION], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_OPTION_ACTIVE], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_SCROLL], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_SLIDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_SLIDER_CURSOR], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_PROGRESS], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_PROGRESS_CURSOR], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_INPUT], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_INPUT_BORDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_SPINNER], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_SPINNER_BORDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_SELECTOR], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_SELECTOR_BORDER], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_HISTO], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_HISTO_BARS], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_HISTO_NEGATIVE], 255, 255, 255, 255); col_load(config->colors[GUI_COLOR_HISTO_HIGHLIGHT], 255, 0, 0, 255); col_load(config->colors[GUI_COLOR_PLOT], 100, 100, 100, 255); col_load(config->colors[GUI_COLOR_PLOT_LINES], 45, 45, 45, 255); col_load(config->colors[GUI_COLOR_PLOT_HIGHLIGHT], 255, 0, 0, 255); col_load(config->colors[GUI_COLOR_SCROLLBAR], 41, 41, 41, 255); col_load(config->colors[GUI_COLOR_SCROLLBAR_CURSOR], 70, 70, 70, 255); col_load(config->colors[GUI_COLOR_SCROLLBAR_BORDER], 45, 45, 45, 255); } void gui_panel_init(struct gui_panel *panel, const struct gui_config *config, const struct gui_font *font) { panel->flags = 0; panel->x = 0; panel->y = 0; panel->at_y = 0; panel->width = 0; panel->height = 0; panel->index = 0; panel->header_height = 0; panel->row_height = 0; panel->row_columns = 0; panel->offset = 0; panel->minimized = gui_false; panel->out = NULL; panel->in = NULL; panel->font = font; panel->config = config; } gui_bool gui_panel_begin(struct gui_panel *panel, struct gui_draw_buffer *out, const struct gui_input *in, const char *text, gui_float x, gui_float y, gui_float w, gui_float h, gui_flags f) { const struct gui_config *config; const struct gui_color *header; struct gui_rect clip; gui_float mouse_x, mouse_y; gui_float clicked_x, clicked_y; gui_float header_x, header_w; gui_bool ret = gui_true; assert(panel); assert(out); if (!panel || !out) return gui_false; if (panel->flags & GUI_PANEL_HIDDEN) return gui_false; panel->out = out; panel->in = in; panel->x = x; panel->y = y; panel->width = w; panel->at_y = y; panel->flags = f; panel->index = 0; panel->row_columns = 0; config = panel->config; header = &config->colors[GUI_COLOR_TITLEBAR]; mouse_x = (panel->in) ? panel->in->mouse_pos.x : -1; mouse_y = (panel->in) ? panel->in->mouse_pos.y: -1; clicked_x = (panel->in) ? panel->in->mouse_clicked_pos.x: - 1; clicked_y = (panel->in) ? panel->in->mouse_clicked_pos.y: - 1; header_x = x + config->panel_padding.x; header_w = w - 2 * config->panel_padding.x; if (!(panel->flags & GUI_PANEL_TAB)) panel->flags |= GUI_PANEL_SCROLLBAR; if (panel->flags & GUI_PANEL_HEADER) { panel->header_height = panel->font->height + 3 * config->item_padding.y; panel->header_height += config->panel_padding.y; gui_draw_rectf(out, x, y, w, panel->header_height, *header); clip.x = x; clip.w = w; clip.y = y + panel->header_height; clip.h = h - panel->header_height; if (panel->flags & GUI_PANEL_SCROLLBAR) clip.h -= (config->panel_padding.y + config->item_padding.y); else clip.h = null_rect.h; } else { panel->header_height = config->panel_padding.y + config->item_padding.y; clip.x = x; clip.y = y; clip.w = w; clip.h = h; if (panel->flags & GUI_PANEL_SCROLLBAR) clip.h -= panel->header_height; else clip.h = null_rect.h; } if (panel->flags & GUI_PANEL_CLOSEABLE && panel->flags & GUI_PANEL_HEADER) { const gui_char *X = (const gui_char*)"x"; const gui_size text_width = gui_font_text_width(panel->font, X, 1); const gui_float close_x = header_x + config->item_padding.x; const gui_float close_y = y + config->panel_padding.y; const gui_float close_w = (gui_float)text_width + config->item_padding.x; const gui_float close_h = panel->font->height + 2 * config->item_padding.y; gui_draw_string(panel->out, panel->font, close_x, close_y, close_w, close_h, config->colors[GUI_COLOR_TEXT], X, 1); header_w -= close_w; header_x += close_h - config->item_padding.x; if (INBOX(mouse_x, mouse_y, close_x, close_y, close_w, close_h)) { if (INBOX(clicked_x, clicked_y, close_x, close_y, close_w, close_h)) { ret = !(panel->in->mouse_down && panel->in->mouse_clicked); if (ret) panel->flags |= GUI_PANEL_HIDDEN; } } } if (panel->flags & GUI_PANEL_MINIMIZABLE && panel->flags & GUI_PANEL_HEADER) { gui_size text_width; gui_float min_x, min_y, min_w, min_h; const gui_char *score = (panel->minimized) ? (const gui_char*)"+": (const gui_char*)"-"; text_width = gui_font_text_width(panel->font, score, 1); min_x = header_x + config->item_padding.x; min_y = y + config->panel_padding.y; min_w = (gui_float)text_width + 2 * config->item_padding.x; min_h = panel->font->height + 2 * config->item_padding.y; gui_draw_string(panel->out, panel->font, min_x, min_y, min_w, min_h, config->colors[GUI_COLOR_TEXT], score, 1); header_w -= min_w; header_x += min_w - config->item_padding.x; if (INBOX(mouse_x, mouse_y, min_x, min_y, min_w, min_h)) { if (INBOX(clicked_x, clicked_y, min_x, min_y, min_w, min_h)) if (panel->in->mouse_down && panel->in->mouse_clicked) panel->minimized = !panel->minimized; } } if (panel->flags & GUI_PANEL_HEADER && text) { const gui_size text_len = strsiz(text); const gui_float label_x = header_x + config->item_padding.x; const gui_float label_y = y + config->panel_padding.y; const gui_float label_w = header_w - (2 * config->item_padding.x); const gui_float label_h = panel->font->height + 2 * config->item_padding.y; gui_draw_string(panel->out, panel->font, label_x, label_y, label_w, label_h, config->colors[GUI_COLOR_TEXT], (const gui_char*)text, text_len); } panel->row_height = panel->header_height; if (panel->flags & GUI_PANEL_SCROLLBAR) { const struct gui_color *color = &config->colors[GUI_COLOR_PANEL]; panel->width -= config->scrollbar_width; panel->height = (panel->flags & GUI_PANEL_HEADER) ? (h - panel->header_height) : h; if (!(panel->flags & GUI_PANEL_HEADER)) panel->height -= (config->panel_padding.y + config->item_padding.y); if (!panel->minimized) gui_draw_rectf(panel->out, x, y + panel->header_height, w, h - panel->header_height, *color); } if (panel->flags & GUI_PANEL_BORDER) { const struct gui_color *color; color = &config->colors[GUI_COLOR_BORDER]; gui_draw_line(panel->out, x, y, x + w, y, *color); } gui_push_clip(out, &clip); return ret; } void gui_panel_layout(struct gui_panel *panel, gui_float height, gui_size cols) { const struct gui_config *config; const struct gui_color *color; assert(panel); if (!panel) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; assert(panel->config); assert(panel->out); config = panel->config; color = &config->colors[GUI_COLOR_PANEL]; panel->index = 0; panel->at_y += panel->row_height; panel->row_columns = cols; panel->row_height = height + config->item_spacing.y; gui_draw_rectf(panel->out, panel->x, panel->at_y, panel->width, height + config->panel_padding.y, *color); } void gui_panel_seperator(struct gui_panel *panel, gui_size cols) { const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; config = panel->config; cols = MIN(cols, panel->row_columns - panel->index); panel->index += cols; if (panel->index >= panel->row_columns) { const gui_float row_height = panel->row_height - config->item_spacing.y; gui_panel_layout(panel, row_height, panel->row_columns); } } static void gui_panel_alloc_space(struct gui_rect *bounds, struct gui_panel *panel) { const struct gui_config *config; gui_float panel_padding, panel_spacing, panel_space; gui_float item_offset, item_width, item_spacing; assert(panel); assert(panel->config); assert(bounds); config = panel->config; if (panel->index >= panel->row_columns) { const gui_float row_height = panel->row_height - config->item_spacing.y; gui_panel_layout(panel, row_height, panel->row_columns); } panel_padding = 2 * config->panel_padding.x; panel_spacing = (gui_float)(panel->row_columns - 1) * config->item_spacing.x; panel_space = panel->width - panel_padding - panel_spacing; item_width = panel_space / (gui_float)panel->row_columns; item_offset = (gui_float)panel->index * item_width; item_spacing = (gui_float)panel->index * config->item_spacing.x; bounds->x = panel->x + item_offset + item_spacing + config->panel_padding.x; bounds->y = panel->at_y - panel->offset; bounds->w = item_width; bounds->h = panel->row_height - config->item_spacing.y; panel->index++; } void gui_panel_text(struct gui_panel *panel, const char *str, gui_size len) { struct gui_rect bounds; struct gui_text text; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); assert(str && len); if (!panel || !panel->config || !panel->out || !panel->font) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; gui_panel_alloc_space(&bounds, panel); config = panel->config; text.x = bounds.x; text.y = bounds.y; text.w = bounds.w; text.h = bounds.h; text.pad_x = config->item_padding.x; text.pad_y = config->item_padding.y; text.text = str; text.length = len; text.font = config->colors[GUI_COLOR_TEXT]; text.background = config->colors[GUI_COLOR_PANEL]; gui_widget_text(panel->out, &text, panel->font); } gui_bool gui_panel_button_text(struct gui_panel *panel, const char *str, enum gui_button_behavior behavior) { struct gui_rect bounds; struct gui_button button; const struct gui_config *config; gui_size len; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); if (!panel || !panel->config || !panel->out || !panel->font) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; len = strsiz(str); button.x = bounds.x; button.y = bounds.y; button.w = bounds.w; button.h = bounds.h; button.behavior = behavior; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER]; button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT]; return gui_widget_button_text(panel->out, &button, str, len, panel->font, panel->in); } gui_bool gui_panel_button_color(struct gui_panel *panel, const struct gui_color color, enum gui_button_behavior behavior) { struct gui_rect bounds; struct gui_button button; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel || !panel->config || !panel->out) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; button.x = bounds.x; button.y = bounds.y; button.w = bounds.w; button.h = bounds.h; button.behavior = behavior; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; button.background = color; button.foreground = color; button.highlight = color; button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT]; return gui_widget_button(panel->out, &button, panel->in); } gui_bool gui_panel_button_triangle(struct gui_panel *panel, enum gui_heading heading, enum gui_button_behavior behavior) { struct gui_rect bounds; struct gui_button button; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel || !panel->config || !panel->out) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; button.x = bounds.x; button.y = bounds.y; button.w = bounds.w; button.h = bounds.h; button.behavior = behavior; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER]; button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT]; return gui_widget_button_triangle(panel->out, &button, heading, panel->in); } gui_bool gui_panel_button_icon(struct gui_panel *panel, gui_texture tex, struct gui_texCoord from, struct gui_texCoord to, enum gui_button_behavior behavior) { struct gui_rect bounds; struct gui_button button; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel || !panel->config || !panel->out) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; button.x = bounds.x; button.y = bounds.y; button.w = bounds.w; button.h = bounds.h; button.behavior = behavior; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER]; button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER]; return gui_widget_button_icon(panel->out, &button, tex, from, to, panel->in); } gui_bool gui_panel_button_toggle(struct gui_panel *panel, const char *str, gui_bool value) { struct gui_rect bounds; struct gui_button button; const struct gui_config *config; gui_size len; assert(panel); assert(panel->config); assert(panel->out); assert(str); if (!panel || !panel->config || !panel->out) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; len = strsiz(str); button.x = bounds.x; button.y = bounds.y; button.w = bounds.w; button.h = bounds.h; button.behavior = GUI_BUTTON_SWITCH; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; if (!value) { button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON]; button.highlight_content = config->colors[GUI_COLOR_TEXT]; } else { button.background = config->colors[GUI_COLOR_BUTTON_HOVER]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_BUTTON]; button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER]; button.highlight_content = config->colors[GUI_COLOR_BUTTON]; } if (gui_widget_button_text(panel->out, &button, str, len, panel->font, panel->in)) value = !value; return value; } gui_bool gui_panel_check(struct gui_panel *panel, const char *text, gui_bool is_active) { struct gui_rect bounds; struct gui_toggle toggle; const struct gui_config *config; gui_size length; assert(panel); assert(panel->config); assert(panel->out); assert(text); if (!panel || !panel->config || !panel->out) return is_active; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return is_active; gui_panel_alloc_space(&bounds, panel); config = panel->config; length = strsiz(text); toggle.x = bounds.x; toggle.y = bounds.y; toggle.w = bounds.w; toggle.h = bounds.h; toggle.pad_x = config->item_padding.x; toggle.pad_y = config->item_padding.y; toggle.active = is_active; toggle.text = (const gui_char*)text; toggle.length = length; toggle.type = GUI_TOGGLE_CHECK; toggle.font = config->colors[GUI_COLOR_TEXT]; toggle.background = config->colors[GUI_COLOR_CHECK]; toggle.foreground = config->colors[GUI_COLOR_CHECK_ACTIVE]; return gui_widget_toggle(panel->out, &toggle, panel->font, panel->in); } gui_bool gui_panel_option(struct gui_panel *panel, const char *text, gui_bool is_active) { struct gui_rect bounds; struct gui_toggle toggle; const struct gui_config *config; gui_size length; assert(panel); assert(panel->config); assert(panel->out); assert(text); if (!panel || !panel->config || !panel->out) return is_active; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return is_active; gui_panel_alloc_space(&bounds, panel); config = panel->config; length = strsiz(text); toggle.x = bounds.x; toggle.y = bounds.y; toggle.w = bounds.w; toggle.h = bounds.h; toggle.pad_x = config->item_padding.x; toggle.pad_y = config->item_padding.y; toggle.active = is_active; toggle.text = (const gui_char*)text; toggle.length = length; toggle.type = GUI_TOGGLE_OPTION; toggle.font = config->colors[GUI_COLOR_TEXT]; toggle.background = config->colors[GUI_COLOR_CHECK]; toggle.foreground = config->colors[GUI_COLOR_CHECK_ACTIVE]; return gui_widget_toggle(panel->out, &toggle, panel->font, panel->in); } gui_float gui_panel_slider(struct gui_panel *panel, gui_float min_value, gui_float value, gui_float max_value, gui_float value_step, enum gui_direction direction) { struct gui_rect bounds; struct gui_slider slider; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel || !panel->config || !panel->out) return value; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return value; gui_panel_alloc_space(&bounds, panel); config = panel->config; slider.x = bounds.x; slider.y = bounds.y; slider.w = bounds.w; slider.h = bounds.h; slider.pad_x = config->item_padding.x; slider.pad_y = config->item_padding.y; slider.value = value; slider.min = min_value; slider.max = max_value; slider.step = value_step; slider.background = config->colors[GUI_COLOR_SLIDER]; slider.foreground = config->colors[GUI_COLOR_SLIDER_CURSOR]; if (direction == GUI_HORIZONTAL) return gui_widget_slider(panel->out, &slider, panel->in); return gui_widget_slider_vertical(panel->out, &slider, panel->in); } gui_size gui_panel_progress(struct gui_panel *panel, gui_size cur_value, gui_size max_value, gui_bool is_modifyable, enum gui_direction direction) { struct gui_rect bounds; struct gui_progress prog; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); if (!panel || !panel->config || !panel->out) return cur_value; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return cur_value; gui_panel_alloc_space(&bounds, panel); config = panel->config; prog.x = bounds.x; prog.y = bounds.y; prog.w = bounds.w; prog.h = bounds.h; prog.pad_x = config->item_padding.x; prog.pad_y = config->item_padding.y; prog.current = cur_value; prog.max = max_value; prog.modifyable = is_modifyable; prog.background = config->colors[GUI_COLOR_PROGRESS]; prog.foreground = config->colors[GUI_COLOR_PROGRESS_CURSOR]; if (direction == GUI_HORIZONTAL) return gui_widget_progress(panel->out, &prog, panel->in); return gui_widget_progress_vertical(panel->out, &prog, panel->in); } gui_bool gui_panel_input(struct gui_panel *panel, gui_char *buffer, gui_size *length, gui_size max_length, enum gui_input_filter filter, gui_bool is_active) { struct gui_rect bounds; struct gui_input_field field; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); assert(buffer); assert(length); if (!panel || !panel->config || !panel->out || !panel->font) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; field.x = bounds.x; field.y = bounds.y; field.w = bounds.w; field.h = bounds.h; field.pad_x = config->item_padding.x; field.pad_y = config->item_padding.y; field.max = max_length; field.filter = filter; field.active = is_active; field.show_cursor = gui_true; field.font = config->colors[GUI_COLOR_TEXT]; field.background = config->colors[GUI_COLOR_INPUT]; field.foreground = config->colors[GUI_COLOR_INPUT_BORDER]; return gui_widget_input(panel->out, buffer, length, &field, panel->font, panel->in); } gui_size gui_panel_shell(struct gui_panel *panel, gui_char *buffer, gui_size *length, gui_size max, gui_bool *active) { struct gui_rect bounds; gui_size submit = 0; gui_size space = 0; struct gui_button button; struct gui_input_field field; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); assert(buffer); assert(length); assert(active); if (!panel || !panel->config || !panel->out || !panel->font) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; field.x = bounds.x; field.y = bounds.y; field.w = bounds.w; field.h = bounds.h; field.pad_x = config->item_padding.x; field.pad_y = config->item_padding.y; field.max = max; field.filter = GUI_INPUT_DEFAULT; field.active = *active; field.font = config->colors[GUI_COLOR_TEXT]; field.background = config->colors[GUI_COLOR_INPUT]; field.foreground = config->colors[GUI_COLOR_INPUT_BORDER]; space = gui_font_text_width(panel->font, (const gui_char*)"Submit", 6); button.y = field.y; button.h = field.h; button.w = (gui_float)space + 2 * field.pad_x - 1; button.x = field.x + field.w - button.w + 1; button.pad_x = field.pad_x; button.pad_y = field.pad_y; button.behavior = GUI_BUTTON_SWITCH; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON_HOVER]; button.highlight_content = config->colors[GUI_COLOR_BUTTON_HOVER_FONT]; if (gui_widget_button_text(panel->out, &button, "Submit", 6, panel->font, panel->in )) { submit = *length; *length = 0; } field.w = field.w - button.w; *active = gui_widget_input(panel->out, (gui_char*)buffer, length, &field, panel->font, panel->in); if (!submit && active && panel->in) { const struct gui_key *enter = &panel->in->keys[GUI_KEY_ENTER]; if ((enter->down && enter->clicked)) { submit = *length; *length = 0; } } return submit; } gui_bool gui_panel_spinner(struct gui_panel *panel, gui_int min, gui_int *value, gui_int max, gui_int step, gui_bool active) { struct gui_rect bounds; const struct gui_config *config; struct gui_input_field field; char string[MAX_NUMBER_BUFFER]; gui_size len, old_len; struct gui_button button; gui_bool is_active, updated = gui_false; gui_bool button_up_clicked, button_down_clicked; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); assert(value); if (!panel || !panel->config || !panel->out || !panel->font) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; *value = CLAMP(min, *value, max); len = itos(string, *value); is_active = active; old_len = len; button.y = bounds.y; button.h = bounds.h / 2; button.w = bounds.h - config->item_padding.x + 1; button.x = bounds.x + bounds.w - button.w - 1; button.pad_x = MAX(3, button.h - panel->font->height); button.pad_y = MAX(3, button.h - panel->font->height); button.behavior = GUI_BUTTON_SWITCH; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON]; button.highlight_content = config->colors[GUI_COLOR_TEXT]; button_up_clicked = gui_widget_button_triangle(panel->out, &button, GUI_UP, panel->in); button.y = bounds.y + button.h; button_down_clicked = gui_widget_button_triangle(panel->out, &button, GUI_DOWN, panel->in); if (button_up_clicked || button_down_clicked) { *value += (button_up_clicked) ? step : -step; *value = CLAMP(min, *value, max); } field.x = bounds.x; field.y = bounds.y; field.w = bounds.w - button.w; field.h = bounds.h; field.pad_x = config->item_padding.x; field.pad_y = config->item_padding.y; field.max = MAX_NUMBER_BUFFER; field.filter = GUI_INPUT_FLOAT; field.active = is_active; field.show_cursor = gui_false; field.font = config->colors[GUI_COLOR_TEXT]; field.background = config->colors[GUI_COLOR_SPINNER]; field.foreground = config->colors[GUI_COLOR_SPINNER_BORDER]; is_active = gui_widget_input(panel->out, (gui_char*)string, &len, &field, panel->font, panel->in); if (old_len != len) strtoi(value, string, len); return is_active; } gui_size gui_panel_selector(struct gui_panel *panel, const char *items[], gui_size item_count, gui_size item_current) { gui_size text_len; gui_float label_x, label_y; gui_float label_w, label_h; struct gui_color color; struct gui_rect bounds; struct gui_button button; const struct gui_config *config; gui_bool button_up_clicked, button_down_clicked; assert(panel); assert(panel->config); assert(panel->out); assert(panel->font); assert(items); assert(item_count); assert(item_current < item_count); if (!panel || !panel->config || !panel->out || !panel->font) return 0; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return 0; gui_panel_alloc_space(&bounds, panel); config = panel->config; gui_draw_rectf(panel->out, bounds.x, bounds.y, bounds.w, bounds.h, config->colors[GUI_COLOR_SELECTOR]); gui_draw_rect(panel->out, bounds.x, bounds.y, bounds.w, bounds.h, config->colors[GUI_COLOR_SELECTOR_BORDER]); button.y = bounds.y; button.h = bounds.h / 2; button.w = bounds.h - config->item_padding.x + 1; button.x = bounds.x + bounds.w - button.w - 1; button.pad_x = MAX(3, button.h - panel->font->height); button.pad_y = MAX(3, button.h - panel->font->height); button.behavior = GUI_BUTTON_SWITCH; button.behavior = GUI_BUTTON_SWITCH; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON]; button.highlight_content = config->colors[GUI_COLOR_TEXT]; button_up_clicked = gui_widget_button_triangle(panel->out, &button, GUI_UP, panel->in); button.y = bounds.y + button.h; button_down_clicked = gui_widget_button_triangle(panel->out, &button, GUI_DOWN, panel->in); item_current = (button_down_clicked && item_current < item_count-1) ? item_current+1: (button_up_clicked && item_current > 0) ? item_current-1 : item_current; label_x = bounds.x + config->item_padding.x; label_y = bounds.y + config->item_padding.y; label_w = bounds.w - (button.w + 2 * config->item_padding.x); label_h = bounds.h - 2 * config->item_padding.y; text_len = strsiz(items[item_current]); color = config->colors[GUI_COLOR_TEXT]; gui_draw_string(panel->out, panel->font, label_x, label_y, label_w, label_h, color, (const gui_char*)items[item_current], text_len); return item_current; } gui_int gui_panel_plot(struct gui_panel *panel, const gui_float *values, gui_size count) { struct gui_rect bounds; struct gui_plot plot; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); assert(values); assert(count); if (!panel || !panel->config || !panel->out) return -1; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return -1; gui_panel_alloc_space(&bounds, panel); config = panel->config; plot.x = bounds.x; plot.y = bounds.y; plot.w = bounds.w; plot.h = bounds.h; plot.pad_x = config->item_padding.x; plot.pad_y = config->item_padding.y; plot.value_count = count; plot.values = values; plot.background = config->colors[GUI_COLOR_PLOT]; plot.foreground = config->colors[GUI_COLOR_PLOT_LINES]; plot.highlight = config->colors[GUI_COLOR_PLOT_HIGHLIGHT]; return gui_widget_plot(panel->out, &plot, panel->in); } gui_int gui_panel_histo(struct gui_panel *panel, const gui_float *values, gui_size count) { struct gui_rect bounds; struct gui_histo histo; const struct gui_config *config; assert(panel); assert(panel->config); assert(panel->out); assert(values); assert(count); if (!panel || !panel->config || !panel->out) return -1; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return -1; gui_panel_alloc_space(&bounds, panel); config = panel->config; histo.x = bounds.x; histo.y = bounds.y; histo.w = bounds.w; histo.h = bounds.h; histo.pad_x = config->item_padding.x; histo.pad_y = config->item_padding.y; histo.values = values; histo.value_count = count; histo.background = config->colors[GUI_COLOR_HISTO]; histo.foreground = config->colors[GUI_COLOR_HISTO_BARS]; histo.negative = config->colors[GUI_COLOR_HISTO_NEGATIVE]; histo.highlight = config->colors[GUI_COLOR_HISTO_HIGHLIGHT]; return gui_widget_histo(panel->out, &histo, panel->in); } gui_bool gui_panel_tab_begin(struct gui_panel *panel, gui_tab *tab, const char *title) { struct gui_rect bounds; gui_float old_height; gui_size old_cols; gui_flags flags; gui_bool min; assert(panel); assert(tab); if (!panel || !tab) return gui_true; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return gui_false; old_height = panel->row_height; old_cols = panel->row_columns; panel->index = 0; panel->row_columns = 1; panel->row_height = 0; gui_panel_alloc_space(&bounds, panel); panel->row_columns = old_cols; panel->row_height = old_height; min = tab->minimized; gui_panel_init(tab, panel->config, panel->font); tab->minimized = min; flags = GUI_PANEL_BORDER|GUI_PANEL_MINIMIZABLE|GUI_PANEL_HEADER|GUI_PANEL_TAB; gui_panel_begin(tab, panel->out, panel->in, title, bounds.x, bounds.y + 1, bounds.w, null_rect.h, flags); return tab->minimized; } void gui_panel_tab_end(struct gui_panel *panel, struct gui_panel *tab) { assert(panel); assert(tab); if (!panel || !tab) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; gui_panel_end(tab); panel->at_y -= panel->row_height; panel->at_y += tab->height + tab->config->item_spacing.y; } void gui_panel_group_begin(struct gui_panel *panel, gui_group *group, const char *title) { gui_flags flags; struct gui_rect bounds; gui_float offset; assert(panel); assert(group); if (!panel || !group) return; if ((panel->flags & GUI_PANEL_HIDDEN) || panel->minimized) return; offset = group->offset; gui_panel_alloc_space(&bounds, panel); gui_panel_init(group, panel->config, panel->font); flags = GUI_PANEL_BORDER|GUI_PANEL_HEADER|GUI_PANEL_SCROLLBAR|GUI_PANEL_TAB; group->offset = offset; gui_panel_begin(group, panel->out, panel->in, title, bounds.x, bounds.y, bounds.w, bounds.h, flags); } void gui_panel_group_end(struct gui_panel *panel, gui_group* group) { assert(panel); assert(group); if (!panel || !group) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; gui_panel_end(group); } gui_size gui_panel_shelf_begin(struct gui_panel *panel, gui_shelf *shelf, const char *tabs[], gui_size size, gui_size active) { gui_size i; gui_flags flags; struct gui_rect bounds; const struct gui_config *config; gui_float header_x, header_y; gui_float header_w, header_h; gui_float item_width; gui_float offset; assert(panel); assert(tabs); assert(shelf); assert(active < size); if (!panel || !shelf || !tabs || active >= size) return active; if ((panel->flags & GUI_PANEL_HIDDEN) || panel->minimized) return active; config = panel->config; gui_panel_alloc_space(&bounds, panel); header_x = bounds.x; header_y = bounds.y; header_w = bounds.w; header_h = config->panel_padding.y + 3 * config->item_padding.y + panel->font->height; item_width = (header_w - (gui_float)size) / (gui_float)size; for (i = 0; i < size; i++) { struct gui_button button; button.y = header_y; button.h = header_h; button.x = header_x + ((gui_float)i * (item_width + 1)); button.w = item_width; button.pad_x = config->item_padding.x; button.pad_y = config->item_padding.y; button.behavior = GUI_BUTTON_SWITCH; if (active == i) { button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON]; button.highlight_content = config->colors[GUI_COLOR_TEXT]; } else { button.y += config->item_padding.y; button.h -= config->item_padding.y; button.background = config->colors[GUI_COLOR_BUTTON]; button.foreground = config->colors[GUI_COLOR_BUTTON_BORDER]; button.content = config->colors[GUI_COLOR_TEXT]; button.highlight = config->colors[GUI_COLOR_BUTTON]; button.highlight_content = config->colors[GUI_COLOR_TEXT]; } if (gui_widget_button_text(panel->out, &button, tabs[i], strsiz(tabs[i]), panel->font, panel->in)) active = i; } bounds.y += header_h; bounds.h -= header_h; offset = shelf->offset; gui_panel_init(shelf, panel->config, panel->font); shelf->offset = offset; flags = GUI_PANEL_BORDER|GUI_PANEL_SCROLLBAR|GUI_PANEL_TAB; gui_panel_begin(shelf, panel->out, panel->in, NULL, bounds.x, bounds.y, bounds.w, bounds.h, flags); return active; } void gui_panel_shelf_end(struct gui_panel *panel, gui_shelf *shelf) { assert(panel); assert(shelf); if (!panel || !shelf) return; if (panel->minimized || (panel->flags & GUI_PANEL_HIDDEN)) return; gui_panel_end(shelf); } void gui_panel_end(struct gui_panel *panel) { const struct gui_config *config; assert(panel); if (!panel) return; if (panel->flags & GUI_PANEL_HIDDEN) return; gui_pop_clip(panel->out); panel->at_y += panel->row_height; config = panel->config; if (panel->flags & GUI_PANEL_SCROLLBAR && !panel->minimized) { gui_float panel_y; struct gui_scroll scroll; scroll.x = panel->x + panel->width; scroll.y = (panel->flags & GUI_PANEL_BORDER) ? panel->y + 1 : panel->y; scroll.w = config->scrollbar_width; scroll.offset = panel->offset; scroll.step = panel->height * 0.25f; scroll.background = config->colors[GUI_COLOR_SCROLLBAR]; scroll.foreground = config->colors[GUI_COLOR_SCROLLBAR_CURSOR]; scroll.border = config->colors[GUI_COLOR_SCROLLBAR_BORDER]; scroll.h = panel->height; if (panel->flags & GUI_PANEL_HEADER) scroll.y += panel->header_height; else scroll.h += panel->header_height; if (panel->flags & GUI_PANEL_BORDER) scroll.h -= 1; scroll.target = panel->at_y - panel->y; if (panel->flags & GUI_PANEL_HEADER) scroll.target -= panel->header_height; panel->offset = (gui_float)gui_widget_scroll(panel->out, &scroll, panel->in); panel_y = panel->y + panel->height + panel->header_height - config->panel_padding.y; gui_draw_rectf(panel->out, panel->x, panel_y, panel->width, config->panel_padding.y, config->colors[GUI_COLOR_PANEL]); } else panel->height = panel->at_y - panel->y; if (panel->flags & GUI_PANEL_BORDER) { const gui_float width = (panel->flags & GUI_PANEL_SCROLLBAR) ? panel->width + config->scrollbar_width : panel->width; const gui_float padding_y = (panel->minimized) ? panel->y + panel->header_height: (panel->flags & GUI_PANEL_SCROLLBAR) ? panel->y + panel->height + panel->header_height: panel->y + panel->height + config->item_padding.y; gui_draw_line(panel->out, panel->x, padding_y, panel->x + width, padding_y, config->colors[GUI_COLOR_BORDER]); gui_draw_line(panel->out, panel->x, panel->y, panel->x, padding_y, config->colors[GUI_COLOR_BORDER]); gui_draw_line(panel->out, panel->x + width, panel->y, panel->x + width, padding_y, config->colors[GUI_COLOR_BORDER]); } } struct gui_context* gui_new(const struct gui_memory *memory, const struct gui_input *input) { void *ptr; gui_size size; struct gui_memory buffer; struct gui_context *ctx; static const gui_size align_panels = ALIGNOF(struct gui_context_panel); static const gui_size align_list = ALIGNOF(struct gui_draw_call_list**); assert(memory); assert(input); if (!memory || !input) return NULL; ctx = memory->memory; ctx->width = 0; ctx->height = 0; ctx->input = input; ctx->active = NULL; ctx->free_list = NULL; ctx->stack_begin = NULL; ctx->stack_end = NULL; ptr = (gui_byte*)memory->memory + sizeof(struct gui_context); ctx->panel_pool = ALIGN(ptr, align_panels); ctx->panel_capacity = memory->max_panels; ctx->panel_size = 0; size = sizeof(struct gui_context_panel) * memory->max_panels; ptr = (gui_byte*)ctx->panel_pool + size; ctx->output_list = ALIGN(ptr, align_list); size = sizeof(struct gui_draw_call_list*) * memory->max_panels; buffer.memory = (gui_byte*)ctx->output_list + size; buffer.size = memory->size - (gui_size)((gui_byte*)buffer.memory - (gui_byte*)memory->memory); buffer.vertex_percentage = memory->vertex_percentage; buffer.command_percentage = memory->command_percentage; buffer.clip_percentage = memory->clip_percentage; gui_output_begin(&ctx->global_buffer, &buffer); return ctx; } static struct gui_context_panel* gui_alloc_panel(struct gui_context *ctx) { assert(ctx); if (ctx->free_list) { struct gui_context_panel *panel; panel = ctx->free_list; ctx->free_list = panel->next; panel->next = NULL; panel->prev = NULL; return panel; } else if (ctx->panel_capacity) { ctx->panel_capacity--; return &ctx->panel_pool[ctx->panel_capacity]; } return NULL; } static void gui_free_panel(struct gui_context *ctx, struct gui_context_panel *panel) { assert(ctx); assert(panel); panel->next = ctx->free_list; ctx->free_list = panel; } static void gui_stack_push(struct gui_context *ctx, struct gui_context_panel *panel) { if (!ctx->stack_begin) { ctx->stack_begin = panel; ctx->stack_end = panel; return; } ctx->stack_end->next = panel; panel->prev = ctx->stack_end; panel->next = NULL; ctx->stack_end = panel; } static void gui_stack_remove(struct gui_context *ctx, struct gui_context_panel *panel) { if (panel->prev) panel->prev->next = panel->next; if (panel->next) panel->next->prev = panel->prev; if (ctx->stack_begin == panel) ctx->stack_begin = panel->next; if (ctx->stack_end == panel) ctx->stack_end = panel->prev; panel->next = NULL; panel->prev = NULL; } struct gui_panel* gui_panel_new(struct gui_context *ctx, gui_float x, gui_float y, gui_float w, gui_float h, const struct gui_config *config, const struct gui_font *font) { struct gui_context_panel *cpanel; assert(ctx); assert(config); assert(font); if (!ctx || !config || !font) return NULL; cpanel = gui_alloc_panel(ctx); if (!cpanel) return NULL; cpanel->x = x, cpanel->y = y; cpanel->w = w, cpanel->h = h; cpanel->next = NULL; cpanel->prev = NULL; gui_panel_init(&cpanel->panel, config, font); gui_stack_push(ctx, cpanel); ctx->panel_size++; return &cpanel->panel; } void gui_panel_del(struct gui_context *ctx, struct gui_panel *panel) { struct gui_context_panel *cpanel; assert(ctx); assert(panel); if (!ctx || !panel) return; cpanel = (struct gui_context_panel*)panel; gui_stack_remove(ctx, cpanel); gui_free_panel(ctx, cpanel); ctx->panel_size--; } void gui_begin(struct gui_context *ctx, gui_float w, gui_float h) { struct gui_context_panel *iter; assert(ctx); if (!ctx) return; ctx->width = w; ctx->height = h; } gui_bool gui_begin_panel(struct gui_context *ctx, struct gui_panel *panel, const char *title, gui_flags flags) { gui_bool active, inpanel; const struct gui_input *in; struct gui_context_panel *cpanel; struct gui_draw_buffer *out; struct gui_draw_buffer *global; assert(ctx); assert(panel); assert(title); if (!ctx || !panel || !title) return gui_false; if (panel->flags & GUI_PANEL_HIDDEN) return gui_false; in = ctx->input; cpanel = (struct gui_context_panel*)panel; inpanel = INBOX(in->mouse_prev.x,in->mouse_prev.y, cpanel->x, cpanel->y, cpanel->w, cpanel->h); if (in->mouse_down && in->mouse_clicked && inpanel && cpanel != ctx->active) { struct gui_context_panel *iter = cpanel->next; while (iter) { if (INBOX(in->mouse_prev.x, in->mouse_prev.y, iter->x, iter->y, iter->w, iter->h)) break; iter = iter->next; } if (!iter) { gui_stack_remove(ctx, cpanel); gui_stack_push(ctx, cpanel); ctx->active = cpanel; } } if (!(flags & GUI_PANEL_TAB)) flags |= GUI_PANEL_SCROLLBAR; if (ctx->active == cpanel && (flags & GUI_PANEL_MOVEABLE) && (flags & GUI_PANEL_HEADER)) { gui_bool incursor; const gui_float header_x = cpanel->x; const gui_float header_y = cpanel->y; const gui_float header_w = cpanel->w; const gui_float header_h = cpanel->panel.header_height; incursor = INBOX(in->mouse_prev.x,in->mouse_prev.y,header_x, header_y, header_w, header_h); if (in->mouse_down && incursor) { cpanel->x = CLAMP(0, cpanel->x + in->mouse_delta.x, ctx->width - cpanel->w); cpanel->y = CLAMP(0, cpanel->y + in->mouse_delta.y, ctx->height - cpanel->h); } } if (ctx->active == cpanel && (flags & GUI_PANEL_SCALEABLE) && (flags & GUI_PANEL_SCROLLBAR)) { const struct gui_config *config = cpanel->panel.config; gui_bool incursor; const gui_float scaler_x = cpanel->x; const gui_float scaler_y = (cpanel->y + cpanel->h) - config->scaler_size.y; const gui_float scaler_w = config->scaler_size.x; const gui_float scaler_h = config->scaler_size.y; incursor = INBOX(in->mouse_prev.x,in->mouse_prev.y,scaler_x, scaler_y, scaler_w, scaler_h); if (in->mouse_down && incursor) { cpanel->x = CLAMP(0, cpanel->x + in->mouse_delta.x, ctx->width - cpanel->w); cpanel->w = CLAMP(0, cpanel->w - in->mouse_delta.x, ctx->width - cpanel->x); cpanel->h = CLAMP(0, cpanel->h + in->mouse_delta.y, ctx->height - cpanel->y); } } global = &ctx->global_buffer; out = &ctx->current_buffer; out->vertex_size = 0; out->vertex_needed = 0; out->command_size = 0; out->command_needed = 0; out->clip_size = 0; out->clip_needed = 0; out->vertexes = &global->vertexes[global->vertex_size]; out->vertex_capacity = global->vertex_capacity - global->vertex_size; out->commands = &global->commands[global->command_size]; out->command_capacity = global->command_capacity - global->command_size; out->clips = global->clips; out->clip_capacity = global->clip_capacity; in = (ctx->active == cpanel) ? ctx->input : NULL; return gui_panel_begin(panel, out, in, title, cpanel->x, cpanel->y, cpanel->w, cpanel->h, flags); } void gui_end_panel(struct gui_context *ctx, struct gui_panel *panel, struct gui_memory_status *status) { struct gui_context_panel *cpanel; struct gui_draw_buffer *global; assert(ctx); assert(panel); if (!ctx || !panel) return; cpanel = (struct gui_context_panel*)panel; gui_panel_end(panel); global = &ctx->global_buffer; global->vertex_size += ctx->current_buffer.vertex_size; global->command_size += ctx->current_buffer.command_size; gui_output_end(&ctx->current_buffer, &cpanel->list, status); } void gui_end(struct gui_context *ctx, struct gui_output *output, struct gui_memory_status *status) { assert(ctx); if (!ctx) return; if (output) { gui_size n = 0; struct gui_context_panel *iter = ctx->stack_begin; while (iter) { if (!(iter->panel.flags & GUI_PANEL_HIDDEN)) ctx->output_list[n++] = &iter->list; iter = iter->next; } output->list_size = n; output->list = ctx->output_list; } gui_output_end(&ctx->global_buffer, NULL, status); }