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