abdelrahman/compositor-test
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Finish implementing node element and add init_ui_ctx function

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Abdelrahman Said 2024-01-17 23:28:31 +00:00
parent fb1af03308
commit c5b263e948
2 changed files with 22 additions and 17 deletions
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9
include/ui.h
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@ -35,16 +35,17 @@ struct ui_ctx {
u64 count;
i64 hovered;
i64 active;
i64 mouse_x;
i64 mouse_y;
i64 rel_x;
i64 rel_y;
i32 mouse_x;
i32 mouse_y;
i32 rel_x;
i32 rel_y;
bool mouse_down;
bool mouse_up;
const window_t *wnd;
ui_elem_t elements[MAX_UI_ELEMENTS];
};
void init_ui_ctx(ui_ctx_t *ctx);
void reset_ui_ctx(ui_ctx_t *ctx);
void handle_ui_events(const window_t *wnd, ui_ctx_t *ctx,
const SDL_Event *event);

30
src/ui.c
View File

@ -2,7 +2,6 @@
#include "SDL_events.h"
#include "aliases/aliases.h"
#include "window.h"
#include <stdio.h>
typedef struct ui_elem_colours ui_elem_colours_t;
struct ui_elem_colours {
@ -28,21 +27,22 @@ bool aabb(const ui_elem_t *elem, i32 x, i32 y) {
y > elem->rect.topleft.y && y <= elem->rect.topleft.y + elem->rect.h;
}
void init_ui_ctx(ui_ctx_t *ctx) {
*ctx = (ui_ctx_t){0};
ctx->hovered = -1;
ctx->active = -1;
}
void reset_ui_ctx(ui_ctx_t *ctx) {
ctx->count = 0;
ctx->mouse_down = false;
ctx->mouse_up = false;
ctx->rel_x = 0;
ctx->rel_y = 0;
}
void handle_ui_events(const window_t *wnd, ui_ctx_t *ctx,
const SDL_Event *event) {
switch (event->type) {
case SDL_MOUSEMOTION:
ctx->rel_x = event->motion.xrel;
ctx->rel_y = event->motion.yrel;
if (wnd->id == event->motion.windowID) {
ctx->mouse_x = event->motion.x;
ctx->mouse_y = event->motion.y;
@ -85,7 +85,7 @@ bool button(const window_t *wnd, ui_ctx_t *ctx, rect_t rect) {
fill_rect(wnd, rect, colours[UI_ELEM_BUTTON].fill);
draw_rect(wnd, rect, colours[UI_ELEM_BUTTON].border);
if (wnd != ctx->wnd) {
if (wnd != ctx->wnd || (ctx->active >= 0 && ctx->active != elem.id)) {
return false;
}
@ -115,24 +115,26 @@ rect_t node(const window_t *wnd, ui_ctx_t *ctx, rect_t rect) {
ui_elem_t elem = (ui_elem_t){
.id = (ctx->count)++,
.rect = rect,
.type = UI_ELEM_BUTTON,
.type = UI_ELEM_NODE,
};
fill_rect(wnd, rect, colours[UI_ELEM_BUTTON].fill);
draw_rect(wnd, rect, colours[UI_ELEM_BUTTON].border);
fill_rect(wnd, rect, colours[UI_ELEM_NODE].fill);
draw_rect(wnd, rect, colours[UI_ELEM_NODE].border);
if (wnd != ctx->wnd) {
if (wnd != ctx->wnd || (ctx->active >= 0 && ctx->active != elem.id)) {
return rect;
}
if (ctx->mouse_up) {
ctx->hovered = ctx->active = -1;
ctx->rel_x = ctx->rel_y = 0;
return rect;
}
if (ctx->hovered == elem.id && ctx->active == elem.id) {
return (rect_t){
.topleft.x = rect.topleft.x + ctx->rel_x,
.topleft.y = rect.topleft.y + ctx->rel_y,
.topleft.x = ctx->mouse_x + ctx->rel_x,
.topleft.y = ctx->mouse_y + ctx->rel_y,
.w = rect.w,
.h = rect.h,
};
@ -146,6 +148,8 @@ rect_t node(const window_t *wnd, ui_ctx_t *ctx, rect_t rect) {
if (ctx->mouse_down) {
ctx->active = elem.id;
ctx->rel_x = rect.topleft.x - ctx->mouse_x;
ctx->rel_y = rect.topleft.y - ctx->mouse_y;
}
return rect;