mirror of
https://github.com/tumic0/QtPBFImagePlugin.git
synced 2024-11-24 03:35:54 +01:00
105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
#include <QJsonDocument>
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#include <QJsonObject>
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#include <QFile>
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#include <QDebug>
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#include "sprites.h"
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/*
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Loading the sprites atlas image must be deferred until all image plugins
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are loaded, otherwise reading the image will cause a deadlock!
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*/
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static const QImage *atlas(const QString &fileName)
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{
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static QImage *img = new QImage(fileName);
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return img;
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}
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Sprites::Sprite::Sprite(const QJsonObject &json)
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{
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int x, y, width, height;
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if (json.contains("x") && json["x"].isDouble())
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x = json["x"].toInt();
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else
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return;
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if (json.contains("y") && json["y"].isDouble())
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y = json["y"].toInt();
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else
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return;
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if (json.contains("width") && json["width"].isDouble())
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width = json["width"].toInt();
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else
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return;
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if (json.contains("height") && json["height"].isDouble())
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height = json["height"].toInt();
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else
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return;
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_rect = QRect(x, y, width, height);
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if (json.contains("pixelRatio") && json["pixelRatio"].isDouble())
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_pixelRatio = json["pixelRatio"].toDouble();
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else
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_pixelRatio = 1.0;
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}
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bool Sprites::load(const QString &jsonFile, const QString &imageFile)
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{
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_imageFile = imageFile;
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QFile file(jsonFile);
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if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
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qCritical() << jsonFile << ": error opening file";
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return false;
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}
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QByteArray ba(file.readAll());
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QJsonParseError error;
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QJsonDocument doc(QJsonDocument::fromJson(ba, &error));
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if (doc.isNull()) {
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qCritical() << jsonFile << ":" << error.errorString();
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return false;
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}
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QJsonObject json(doc.object());
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for (QJsonObject::const_iterator it = json.constBegin();
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it != json.constEnd(); it++) {
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QJsonValue val(*it);
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if (val.isObject()) {
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Sprite s(val.toObject());
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if (s.rect().isValid())
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_sprites.insert(it.key(), s);
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else
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qWarning() << it.key() << ": invalid sprite definition";
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} else
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qWarning() << it.key() << ": invalid sprite definition";
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}
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return true;
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}
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QImage Sprites::icon(const QString &name) const
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{
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if (_imageFile.isEmpty())
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return QImage();
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const QImage *img = atlas(_imageFile);
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if (img->isNull())
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return QImage();
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QMap<QString, Sprite>::const_iterator it = _sprites.find(name);
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if (it == _sprites.constEnd())
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return QImage();
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if (!img->rect().contains(it->rect()))
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return QImage();
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QImage ret(img->copy(it->rect()));
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ret.setDevicePixelRatio(it->pixelRatio());
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return ret;
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}
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