117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
typedef struct ui_code_loc_t ui_code_loc_t;
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struct ui_code_loc_t {
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char *file;
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int line;
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int counter;
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};
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typedef struct ui_id_t ui_id_t;
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struct ui_id_t {
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u64 value;
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};
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typedef struct ui_box_flags_t ui_box_flags_t;
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struct ui_box_flags_t {
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b8 draw_rect: 1;
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b8 draw_border: 1;
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b8 draw_text: 1;
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b8 clip_rect : 1;
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};
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typedef enum {
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ui_text_align_left,
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ui_text_align_center,
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} ui_text_align_t;
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typedef enum {
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ui_op_cut_top,
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ui_op_cut_bottom,
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ui_op_cut_left,
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ui_op_cut_right,
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ui_op_idle,
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} ui_op_t;
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typedef struct ui_box_t ui_box_t;
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struct ui_box_t {
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ui_box_t *next;
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ui_box_t *prev;
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ui_box_t *first;
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ui_box_t *last;
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ui_box_t *parent;
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i32 node_count;
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ui_code_loc_t loc;
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s8_t string;
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ui_box_flags_t flags;
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b8 created_new;
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ui_text_align_t text_align;
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ui_op_t op;
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r2f32_t full_rect;
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r2f32_t rect;
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// state
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ui_id_t id;
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ui_box_t *hash_next;
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ui_box_t *hash_prev;
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u64 last_touched_event_id;
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r2f32_t final_rect;
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b32 expanded;
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};
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typedef struct ui_signal_t ui_signal_t;
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struct ui_signal_t {
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ui_box_t *box;
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b8 clicked;
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b8 dragging;
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};
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typedef struct ui_t ui_t;
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struct ui_t {
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// building
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ui_box_t root;
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ui_box_t *top;
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app_event_t *event;
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stack_t(ui_id_t, 32) id_stack;
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ui_text_align_t pref_text_align;
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// allocation
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ma_arena_t *box_arena;
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i32 allocated_boxes;
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ui_box_t *free_first;
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ui_box_t *hash_first;
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ui_box_t *hash_last;
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// interaction
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ui_id_t hot;
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ui_id_t active;
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// drawing
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r2f32_t clip_rect;
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};
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ui_t *ui;
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gb_read_only ui_id_t ui_null_id;
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gb_read_only ui_box_t ui_null_box;
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gb_read_only ui_box_flags_t ui_null_flags;
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fn b32 ui_is_null_id(ui_id_t id) { return id.value == 0; }
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fn b32 ui_is_null_box(ui_box_t *box) { return box->id.value == 0; }
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fn b32 ui_is_hot_box(ui_box_t *box) { return !ui_is_null_box(box) && box->id.value == ui->hot.value; }
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fn b32 ui_is_active_box(ui_box_t *box) { return !ui_is_null_box(box) && box->id.value == ui->active.value; }
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#define ev_left(ev) ((ev)->mouse_button == app_mouse_button_left)
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#define ev_left_up(ev) ((ev)->kind == app_event_kind_mouse_up && ev_left(ev))
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#define ev_left_down(ev) ((ev)->kind == app_event_kind_mouse_down && ev_left(ev))
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fn void ui_set_rect(ui_box_t *box, r2f32_t rect) { box->rect = box->full_rect = rect; }
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#define UILOC (ui_code_loc_t){.file = __FILE__, .line = __LINE__, .counter = __COUNTER__}
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#define ui_em(x) ((x) * rn_state.main_font->size)
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#define ui_max 200000000.f
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#define ui_box_flags(...) (ui_box_flag_t){__VA_ARGS__}
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