80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
#ifndef UI_H
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#define UI_H
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#include "SDL_events.h"
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#include "aliases.h"
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#include "window.h"
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#include <stdbool.h>
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#define MAX_UI_ELEMENTS 8192
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#define RESERVED_UI_SLOT 0
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#define UI_ELEM_START_INDEX 1
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#define BUTTON_WIDTH 100
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#define BUTTON_HEIGHT 40
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#define NODE_WIDTH 70
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#define NODE_HEIGHT 20
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#define DEFAULT_NOODLE_LENGTH 60
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typedef enum ui_elem_type ui_elem_type;
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typedef struct ui_elem ui_elem;
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typedef struct ui_ctx ui_ctx;
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typedef struct ui_elem_colours ui_elem_colours;
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typedef enum noodle_action noodle_action;
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enum ui_elem_type {
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UI_ELEM_NODE,
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UI_ELEM_NOODLE,
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UI_ELEM_BUTTON,
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COUNT_UI_ELEM,
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};
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struct ui_elem {
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u64 id;
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union {
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rect rec;
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line ln;
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};
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ui_elem_type type;
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};
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struct ui_elem_colours {
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colour fill;
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colour border;
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};
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enum noodle_action {
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NOODLE_ACTION_NONE,
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NOODLE_ACTION_DRAGGING,
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NOODLE_ACTION_RELEASED,
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};
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struct ui_ctx {
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u64 count;
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i64 hovered;
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i64 active;
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i32 mouse_x;
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i32 mouse_y;
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i32 rel_x;
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i32 rel_y;
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bool mouse_down;
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bool mouse_up;
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const window *wnd;
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ui_elem elements[MAX_UI_ELEMENTS];
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};
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void init_ui_ctx(ui_ctx *ctx);
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void reset_ui_ctx(ui_ctx *ctx);
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void handle_ui_events(const window *wnd, ui_ctx *ctx, const SDL_Event *event);
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bool ui_button(const window *wnd, ui_ctx *ctx, rect rect,
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ui_elem_colours colours);
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bool ui_node(const window *wnd, ui_ctx *ctx, rect rect,
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ui_elem_colours colours);
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noodle_action ui_noodle(const window *wnd, ui_ctx *ctx, line ln,
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ui_elem_colours colours, rect parent_node);
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#endif // !UI_H
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