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Diffstat (limited to 'microui.h')
| -rw-r--r-- | microui.h | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/microui.h b/microui.h new file mode 100644 index 000000000000..78a1a341fe93 --- /dev/null +++ b/microui.h @@ -0,0 +1,296 @@ +/* +** Copyright (c) 2020 rxi +** +** This library is free software; you can redistribute it and/or modify it +** under the terms of the MIT license. See `microui.c` for details. +*/ + +#ifndef MICROUI_H +#define MICROUI_H + +#define MU_VERSION "2.01" + +#define MU_COMMANDLIST_SIZE (256 * 1024) +#define MU_ROOTLIST_SIZE 32 +#define MU_CONTAINERSTACK_SIZE 32 +#define MU_CLIPSTACK_SIZE 32 +#define MU_IDSTACK_SIZE 32 +#define MU_LAYOUTSTACK_SIZE 16 +#define MU_CONTAINERPOOL_SIZE 48 +#define MU_TREENODEPOOL_SIZE 48 +#define MU_MAX_WIDTHS 16 +#define MU_REAL float +#define MU_REAL_FMT "%.3g" +#define MU_SLIDER_FMT "%.2f" +#define MU_MAX_FMT 127 + +#define mu_stack(T, n) struct { int idx; T items[n]; } +#define mu_min(a, b) ((a) < (b) ? (a) : (b)) +#define mu_max(a, b) ((a) > (b) ? (a) : (b)) +#define mu_clamp(x, a, b) mu_min(b, mu_max(a, x)) + +enum { + MU_CLIP_PART = 1, + MU_CLIP_ALL +}; + +enum { + MU_COMMAND_JUMP = 1, + MU_COMMAND_CLIP, + MU_COMMAND_RECT, + MU_COMMAND_TEXT, + MU_COMMAND_ICON, + MU_COMMAND_MAX +}; + +enum { + MU_COLOR_TEXT, + MU_COLOR_BORDER, + MU_COLOR_WINDOWBG, + MU_COLOR_TITLEBG, + MU_COLOR_TITLETEXT, + MU_COLOR_PANELBG, + MU_COLOR_BUTTON, + MU_COLOR_BUTTONHOVER, + MU_COLOR_BUTTONFOCUS, + MU_COLOR_BASE, + MU_COLOR_BASEHOVER, + MU_COLOR_BASEFOCUS, + MU_COLOR_SCROLLBASE, + MU_COLOR_SCROLLTHUMB, + MU_COLOR_MAX +}; + +enum { + MU_ICON_CLOSE = 1, + MU_ICON_CHECK, + MU_ICON_COLLAPSED, + MU_ICON_EXPANDED, + MU_ICON_MAX +}; + +enum { + MU_RES_ACTIVE = (1 << 0), + MU_RES_SUBMIT = (1 << 1), + MU_RES_CHANGE = (1 << 2) +}; + +enum { + MU_OPT_ALIGNCENTER = (1 << 0), + MU_OPT_ALIGNRIGHT = (1 << 1), + MU_OPT_NOINTERACT = (1 << 2), + MU_OPT_NOFRAME = (1 << 3), + MU_OPT_NORESIZE = (1 << 4), + MU_OPT_NOSCROLL = (1 << 5), + MU_OPT_NOCLOSE = (1 << 6), + MU_OPT_NOTITLE = (1 << 7), + MU_OPT_HOLDFOCUS = (1 << 8), + MU_OPT_AUTOSIZE = (1 << 9), + MU_OPT_POPUP = (1 << 10), + MU_OPT_CLOSED = (1 << 11), + MU_OPT_EXPANDED = (1 << 12) +}; + +enum { + MU_MOUSE_LEFT = (1 << 0), + MU_MOUSE_RIGHT = (1 << 1), + MU_MOUSE_MIDDLE = (1 << 2) +}; + +enum { + MU_KEY_SHIFT = (1 << 0), + MU_KEY_CTRL = (1 << 1), + MU_KEY_ALT = (1 << 2), + MU_KEY_BACKSPACE = (1 << 3), + MU_KEY_RETURN = (1 << 4) +}; + + +typedef struct mu_Context mu_Context; +typedef unsigned mu_Id; +typedef MU_REAL mu_Real; +typedef void* mu_Font; + +typedef struct { int x, y; } mu_Vec2; +typedef struct { int x, y, w, h; } mu_Rect; +typedef struct { unsigned char r, g, b, a; } mu_Color; +typedef struct { mu_Id id; int last_update; } mu_PoolItem; + +typedef struct { int type, size; } mu_BaseCommand; +typedef struct { mu_BaseCommand base; void *dst; } mu_JumpCommand; +typedef struct { mu_BaseCommand base; mu_Rect rect; } mu_ClipCommand; +typedef struct { mu_BaseCommand base; mu_Rect rect; mu_Color color; } mu_RectCommand; +typedef struct { mu_BaseCommand base; mu_Font font; mu_Vec2 pos; mu_Color color; char str[1]; } mu_TextCommand; +typedef struct { mu_BaseCommand base; mu_Rect rect; int id; mu_Color color; } mu_IconCommand; + +typedef union { + int type; + mu_BaseCommand base; + mu_JumpCommand jump; + mu_ClipCommand clip; + mu_RectCommand rect; + mu_TextCommand text; + mu_IconCommand icon; +} mu_Command; + +typedef struct { + mu_Rect body; + mu_Rect next; + mu_Vec2 position; + mu_Vec2 size; + mu_Vec2 max; + int widths[MU_MAX_WIDTHS]; + int items; + int item_index; + int next_row; + int next_type; + int indent; +} mu_Layout; + +typedef struct { + mu_Command *head, *tail; + mu_Rect rect; + mu_Rect body; + mu_Vec2 content_size; + mu_Vec2 scroll; + int zindex; + int open; +} mu_Container; + +typedef struct { + mu_Font font; + mu_Vec2 size; + int padding; + int spacing; + int indent; + int title_height; + int scrollbar_size; + int thumb_size; + mu_Color colors[MU_COLOR_MAX]; +} mu_Style; + +struct mu_Context { + /* callbacks */ + int (*text_width)(mu_Font font, const char *str, int len); + int (*text_height)(mu_Font font); + void (*draw_frame)(mu_Context *ctx, mu_Rect rect, int colorid); + /* core state */ + mu_Style _style; + mu_Style *style; + mu_Id hover; + mu_Id focus; + mu_Id last_id; + mu_Rect last_rect; + int last_zindex; + int updated_focus; + int frame; + mu_Container *hover_root; + mu_Container *next_hover_root; + mu_Container *scroll_target; + char number_edit_buf[MU_MAX_FMT]; + mu_Id number_edit; + /* stacks */ + mu_stack(char, MU_COMMANDLIST_SIZE) command_list; + mu_stack(mu_Container*, MU_ROOTLIST_SIZE) root_list; + mu_stack(mu_Container*, MU_CONTAINERSTACK_SIZE) container_stack; + mu_stack(mu_Rect, MU_CLIPSTACK_SIZE) clip_stack; + mu_stack(mu_Id, MU_IDSTACK_SIZE) id_stack; + mu_stack(mu_Layout, MU_LAYOUTSTACK_SIZE) layout_stack; + /* retained state pools */ + mu_PoolItem container_pool[MU_CONTAINERPOOL_SIZE]; + mu_Container containers[MU_CONTAINERPOOL_SIZE]; + mu_PoolItem treenode_pool[MU_TREENODEPOOL_SIZE]; + /* input state */ + mu_Vec2 mouse_pos; + mu_Vec2 last_mouse_pos; + mu_Vec2 mouse_delta; + mu_Vec2 scroll_delta; + int mouse_down; + int mouse_pressed; + int key_down; + int key_pressed; + char input_text[32]; +}; + + +mu_Vec2 mu_vec2(int x, int y); +mu_Rect mu_rect(int x, int y, int w, int h); +mu_Color mu_color(int r, int g, int b, int a); + +void mu_init(mu_Context *ctx); +void mu_begin(mu_Context *ctx); +void mu_end(mu_Context *ctx); +void mu_set_focus(mu_Context *ctx, mu_Id id); +mu_Id mu_get_id(mu_Context *ctx, const void *data, int size); +void mu_push_id(mu_Context *ctx, const void *data, int size); +void mu_pop_id(mu_Context *ctx); +void mu_push_clip_rect(mu_Context *ctx, mu_Rect rect); +void mu_pop_clip_rect(mu_Context *ctx); +mu_Rect mu_get_clip_rect(mu_Context *ctx); +int mu_check_clip(mu_Context *ctx, mu_Rect r); +mu_Container* mu_get_current_container(mu_Context *ctx); +mu_Container* mu_get_container(mu_Context *ctx, const char *name); +void mu_bring_to_front(mu_Context *ctx, mu_Container *cnt); + +int mu_pool_init(mu_Context *ctx, mu_PoolItem *items, int len, mu_Id id); +int mu_pool_get(mu_Context *ctx, mu_PoolItem *items, int len, mu_Id id); +void mu_pool_update(mu_Context *ctx, mu_PoolItem *items, int idx); + +void mu_input_mousemove(mu_Context *ctx, int x, int y); +void mu_input_mousedown(mu_Context *ctx, int x, int y, int btn); +void mu_input_mouseup(mu_Context *ctx, int x, int y, int btn); +void mu_input_scroll(mu_Context *ctx, int x, int y); +void mu_input_keydown(mu_Context *ctx, int key); +void mu_input_keyup(mu_Context *ctx, int key); +void mu_input_text(mu_Context *ctx, const char *text); + +mu_Command* mu_push_command(mu_Context *ctx, int type, int size); +int mu_next_command(mu_Context *ctx, mu_Command **cmd); +void mu_set_clip(mu_Context *ctx, mu_Rect rect); +void mu_draw_rect(mu_Context *ctx, mu_Rect rect, mu_Color color); +void mu_draw_box(mu_Context *ctx, mu_Rect rect, mu_Color color); +void mu_draw_text(mu_Context *ctx, mu_Font font, const char *str, int len, mu_Vec2 pos, mu_Color color); +void mu_draw_icon(mu_Context *ctx, int id, mu_Rect rect, mu_Color color); + +void mu_layout_row(mu_Context *ctx, int items, const int *widths, int height); +void mu_layout_width(mu_Context *ctx, int width); +void mu_layout_height(mu_Context *ctx, int height); +void mu_layout_begin_column(mu_Context *ctx); +void mu_layout_end_column(mu_Context *ctx); +void mu_layout_set_next(mu_Context *ctx, mu_Rect r, int relative); +mu_Rect mu_layout_next(mu_Context *ctx); + +void mu_draw_control_frame(mu_Context *ctx, mu_Id id, mu_Rect rect, int colorid, int opt); +void mu_draw_control_text(mu_Context *ctx, const char *str, mu_Rect rect, int colorid, int opt); +int mu_mouse_over(mu_Context *ctx, mu_Rect rect); +void mu_update_control(mu_Context *ctx, mu_Id id, mu_Rect rect, int opt); + +#define mu_button(ctx, label) mu_button_ex(ctx, label, 0, MU_OPT_ALIGNCENTER) +#define mu_textbox(ctx, buf, bufsz) mu_textbox_ex(ctx, buf, bufsz, 0) +#define mu_slider(ctx, value, lo, hi) mu_slider_ex(ctx, value, lo, hi, 0, MU_SLIDER_FMT, MU_OPT_ALIGNCENTER) +#define mu_number(ctx, value, step) mu_number_ex(ctx, value, step, MU_SLIDER_FMT, MU_OPT_ALIGNCENTER) +#define mu_header(ctx, label) mu_header_ex(ctx, label, 0) +#define mu_begin_treenode(ctx, label) mu_begin_treenode_ex(ctx, label, 0) +#define mu_begin_window(ctx, title, rect) mu_begin_window_ex(ctx, title, rect, 0) +#define mu_begin_panel(ctx, name) mu_begin_panel_ex(ctx, name, 0) + +void mu_text(mu_Context *ctx, const char *text); +void mu_label(mu_Context *ctx, const char *text); +int mu_button_ex(mu_Context *ctx, const char *label, int icon, int opt); +int mu_checkbox(mu_Context *ctx, const char *label, int *state); +int mu_textbox_raw(mu_Context *ctx, char *buf, int bufsz, mu_Id id, mu_Rect r, int opt); +int mu_textbox_ex(mu_Context *ctx, char *buf, int bufsz, int opt); +int mu_slider_ex(mu_Context *ctx, mu_Real *value, mu_Real low, mu_Real high, mu_Real step, const char *fmt, int opt); +int mu_number_ex(mu_Context *ctx, mu_Real *value, mu_Real step, const char *fmt, int opt); +int mu_header_ex(mu_Context *ctx, const char *label, int opt); +int mu_begin_treenode_ex(mu_Context *ctx, const char *label, int opt); +void mu_end_treenode(mu_Context *ctx); +int mu_begin_window_ex(mu_Context *ctx, const char *title, mu_Rect rect, int opt); +void mu_end_window(mu_Context *ctx); +void mu_open_popup(mu_Context *ctx, const char *name); +int mu_begin_popup(mu_Context *ctx, const char *name); +void mu_end_popup(mu_Context *ctx); +void mu_begin_panel_ex(mu_Context *ctx, const char *name, int opt); +void mu_end_panel(mu_Context *ctx); + +#endif |