tilesetprovider.cpp

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/*
  * Copyright 2020 Twilight
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
*/

 
#include <QImage>
 
#include "./tilesetprovider.h"
#include "./tilesetengine.h"
 
TilesetProvider::TilesetProvider()
  : QQuickImageProvider(QQuickImageProvider::Pixmap)
{}
 
 
QPixmap TilesetProvider::requestPixmap(const QString& id, QSize* size, const QSize& requestedSize)
{
  // Check to make sure it's a properly formed request
  auto idParts = id.split("/", Qt::SkipEmptyParts);
 
  // Has to have all 7 parts unconditionally
  if(idParts.size() < 7)
    return blankImage(size, requestedSize);
 
  // Whole tileset or a specific tile
  // Never whole tileset unless it's for debug purposes
  bool wholeTileset = idParts.at(4) == "whole";
 
  int widthSize = idParts.at(5).toInt();
  int heightSize = idParts.at(6).toInt();
 
  // Actual size
  QSize actualSize = QSize(widthSize, heightSize);
 
  // Set actual size if asked
  if(size != nullptr)
    *size = actualSize;
 
  // Prepare return
  QPixmap ret;
 
  // Get full tileset if "whole" otherwise requested tile
  if(wholeTileset)
    ret = TilesetEngine::buildTilesetFullDebug(id);
  else
    ret = TilesetEngine::buildTileset(id).at(idParts.at(4).toInt());
 
  // Scale if asked to
  ret = ret.scaled((requestedSize.width() > 0) ? requestedSize.width() : actualSize.width(),
             (requestedSize.height() > 0) ? requestedSize.height() : actualSize.height());
 
  // Return said tile or tileset
  return ret;
}
 
QPixmap TilesetProvider::blankImage(QSize* size, const QSize& requestedSize)
{
  // Create an error "red" blank tile to indicate issue
  QSize actualSize = QSize(TilesetEngine::width, TilesetEngine::height);
 
  if(size != nullptr)
    *size = actualSize;
 
  auto img = QImage(TilesetEngine::width, TilesetEngine::height, QImage::Format::Format_ARGB32);
  img.fill(QColor(255, 0, 0, 255)); // Fill with error "red" color
 
  auto ret = QPixmap::fromImage(img);
 
  ret = ret.scaled((requestedSize.width() > 0) ? requestedSize.width() : actualSize.width(),
             (requestedSize.height() > 0) ? requestedSize.height() : actualSize.height());
 
  return ret;
}