nesemu/gui/pattern_window.c

//
// Created by william on 6/14/24.
//

#include <assert.h>
#include "pattern_window.h"

#define PW_SCALE 2

void pattern_window_init(NesPatternWindow *window, byte *pattern_memory) {
    int win_width = pattern_display_get_size(PW_ROW_TILE_COUNT);
    window->sdl_context = window_init("Pattern Table", win_width, win_width * 2, PW_SCALE);
    window->pattern_memory = pattern_memory;

    pattern_display_init(&window->pattern_display, window->sdl_context.renderer, PW_ROW_TILE_COUNT,
                         PW_ROW_TILE_COUNT * 2, PATTERN_DISPLAY_STATIC);
}

void pattern_window_uninit(NesPatternWindow *window) {
    pattern_display_uninit(&window->pattern_display);
    window_uninit(window->sdl_context);
}

static byte *pattern_window_read_byte(address addr, void *data) {
    assert(data != NULL);
    assert(addr < 0x2000);

    NesPatternWindow *window = (NesPatternWindow *) data;

    return &window->pattern_memory[addr];
}

void pattern_window_build_table(NesPatternWindow *window) {
    pattern_display_build(&window->pattern_display, &pattern_window_read_byte, window);
}

void pattern_window_render(NesPatternWindow *window) {
    SDL_RenderClear(window->sdl_context.renderer);
    pattern_display_render(&window->pattern_display, window->sdl_context.renderer);
}

void pattern_window_present(NesPatternWindow *window) {
    SDL_RenderPresent(window->sdl_context.renderer);
}