79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
#include "ui_list.h"
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#include "SDL_rect.h"
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#include "SDL_render.h"
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#include "aliases/aliases.h"
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#include <stdbool.h>
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#include <stdio.h>
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bool aabb(SDL_Rect *rect, i64 x, i64 y) {
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return x >= rect->x && y >= rect->y && x < rect->x + rect->w &&
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y < rect->y + rect->h;
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}
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bool draw_element(SDL_Texture *texture, SDL_Texture *selected_texture,
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bool selected, u64 x, u64 y, u64 item_w, u64 item_h,
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u64 padding, i64 mouse_x, i64 mouse_y, i64 clicked_x,
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i64 clicked_y, SDL_Renderer *renderer, colour_t bg_colour,
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colour_t hover_colour) {
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bool output = false;
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SDL_Rect bg_dest = {.x = x - padding,
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.y = y - padding,
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.w = item_w + padding * 2,
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.h = item_h + padding * 2 + 1};
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SDL_Rect texture_dest = {.x = x, .y = y, .w = 0, .h = 0};
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colour_t c = bg_colour;
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bool hovered = false;
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if (aabb(&bg_dest, mouse_x, mouse_y)) {
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hovered = true;
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c = hover_colour;
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}
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if (aabb(&bg_dest, clicked_x, clicked_y)) {
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output = true;
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}
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SDL_SetRenderDrawColor(renderer, c.rgba.r, c.rgba.g, c.rgba.b, c.rgba.a);
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SDL_Texture *render_texture =
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(selected || hovered) ? selected_texture : texture;
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i32 texture_w;
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i32 texture_h;
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SDL_QueryTexture(render_texture, NULL, NULL, &texture_w, &texture_h);
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i32 x_offset = (item_w - texture_w) / 2;
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texture_dest.x += x_offset;
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texture_dest.w = texture_w;
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texture_dest.h = texture_h;
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(selected || hovered) ? SDL_RenderFillRect(renderer, &bg_dest)
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: SDL_RenderDrawRect(renderer, &bg_dest);
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SDL_RenderCopy(renderer, render_texture, NULL, &texture_dest);
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return output;
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}
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u64 ui_list(const ui_list_t *list, u64 x, u64 y, u64 padding, i64 mouse_x,
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i64 mouse_y, i64 clicked_x, i64 clicked_y, SDL_Renderer *renderer,
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colour_t bg_colour, colour_t hover_colour) {
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u64 selected = list->selected;
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for (u64 i = 0; i < list->length; ++i) {
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if (draw_element(list->textures[i], list->selected_textures[i],
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i == list->selected, x,
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y + (list->item_h + padding * 2) * i, list->item_w,
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list->item_h, padding, mouse_x, mouse_y, clicked_x,
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clicked_y, renderer, bg_colour, hover_colour)) {
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selected = i;
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}
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}
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return selected;
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}
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