#include "bordermetatilespixmapitem.h"
#include "imageproviders.h"
#include "metatile.h"
#include "editcommands.h"
#include <QPainter>

void BorderMetatilesPixmapItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
    QList<uint16_t> *selectedMetatiles = this->metatileSelector->getSelectedMetatiles();
    QPoint selectionDimensions = this->metatileSelector->getSelectionDimensions();
    QPoint pos = Metatile::coordFromPixmapCoord(event->pos());
    int width = map->getBorderWidth();
    int height = map->getBorderHeight();

    Blockdata oldBorder = map->layout->border;

    for (int i = 0; i < selectionDimensions.x() && (i + pos.x()) < width; i++) {
        for (int j = 0; j < selectionDimensions.y() && (j + pos.y()) < height; j++) {
            int blockIndex = (j + pos.y()) * width + (i + pos.x());
            uint16_t tile = selectedMetatiles->at(j * selectionDimensions.x() + i);
            map->layout->border[blockIndex].tile = tile;
        }
    }

    if (map->layout->border != oldBorder) {
        map->editHistory.push(new PaintBorder(map, oldBorder, map->layout->border, 0));
    }

    emit borderMetatilesChanged();
}

void BorderMetatilesPixmapItem::draw() {
    map->setBorderItem(this);

    int width = map->getBorderWidth();
    int height = map->getBorderHeight();
    QImage image(16 * width, 16 * height, QImage::Format_RGBA8888);
    QPainter painter(&image);

    for (int i = 0; i < width; i++) {
        for (int j = 0; j < height; j++) {
            int x = i * 16;
            int y = j * 16;
            int index = j * width + i;
            QImage metatile_image = getMetatileImage(
                        map->layout->border.value(index).tile,
                        map->layout->tileset_primary,
                        map->layout->tileset_secondary,
                        map->metatileLayerOrder,
                        map->metatileLayerOpacity);
            QPoint metatile_origin = QPoint(x, y);
            painter.drawImage(metatile_origin, metatile_image);
        }
    }

    painter.end();
    this->setPixmap(QPixmap::fromImage(image));

    emit borderMetatilesChanged();
}