简易Gif生成工具源码(EasyGifTool 基于Qt开发)

【实例简介】

简易Gif生成工具。

【实例截图】

【核心代码】

#include "GifCreater.h"

GifCreater::GifCreater(QObject *parent)

 :QThread(parent)

{

}

GifCreater::~GifCreater()

{

}

GifCreater* GifCreater::getInstance(void)

{

 static GifCreater nGifCreater;

 return &nGifCreater;

}

// 设置gif图片的尺寸

void GifCreater::setGifPicSize(int w, int h)

{

 m_Width = w;

 m_Height = h;

}

// 添加图片列表

void GifCreater::addPicList(QPixmap pixmap)

{

 QMutexLocker locker(&m_Mutex);

 m_PixmapList.push_back(pixmap);

}

void GifCreater::startGifCreater(QString pathFileString)

{

 if (m_GifWriter)

 delete m_GifWriter;

 m_GifWriter = new Gif_H::GifWriter;

 if (!m_Gif.GifBegin(m_GifWriter, pathFileString.toLocal8Bit().data(), m_Width, m_Height, m_Fps))

 {

 delete m_GifWriter;

 m_GifWriter = nullptr;

 return;

 }

 m_StartThread = true;

}

void GifCreater::endGifCreater(void)

{

 // 外部线程调用

 while (1)

 {

 bool isBreak = false;

 m_Mutex.lock();

 isBreak = m_PixmapList.isEmpty() ? true : false;

 m_Mutex.unlock();

 if (!isBreak)

 QThread::msleep(100);

 else

 break;

 }

 m_Gif.GifEnd(m_GifWriter);

 delete m_GifWriter;

 m_GifWriter = nullptr;

}

void GifCreater::endGifCreater2(void)

{

 m_Gif.GifEnd(m_GifWriter);

 delete m_GifWriter;

 m_GifWriter = nullptr;

}

void GifCreater::setSpeed(int speed)

{

 QMutexLocker locker(&m_Mutex);

 m_Fps = speed;

}

void GifCreater::run(void)

{

 while (!this->isInterruptionRequested())

 {

 if (!m_PixmapList.isEmpty())

 {

 QMutexLocker locker(&m_Mutex);

 QPixmap pixmap = m_PixmapList.at(0);

 QImage image = pixmap.toImage();

 image = image.convertToFormat(QImage::Format_RGBA8888);

 m_PixmapList.pop_front();

 // 写入图片信息

 m_Gif.GifWriteFrame(m_GifWriter, image.bits(), image.width(), image.height(), m_Fps);

 emit signalCurrentSubPage(m_PixmapList.count());

 }

 else

 QThread::msleep(100);

 }

}

void GifCreater::testGif(void)

{

 QImage img1 = QImage("1_1_1.jpg");

 img1 = img1.convertToFormat(QImage::Format_RGBA8888);

 QImage img2 = QImage("2_2_2.jpg");

 img2 = img2.convertToFormat(QImage::Format_RGBA8888);

 QImage img3 = QImage("3_3_3.jpg");

 img3 = img3.convertToFormat(QImage::Format_RGBA8888);

 Gif_H gifH;

 Gif_H::GifWriter writer;

 if (!gifH.GifBegin(&writer, "123.gif", img1.size().width(), \

 img1.size().height(), 50))

 return;

 gifH.GifWriteFrame(&writer, img1.constBits(), img1.width(), img1.height(), 50);

 gifH.GifWriteFrame(&writer, img2.constBits(), img2.width(), img2.height(), 50);

 gifH.GifWriteFrame(&writer, img3.constBits(), img3.width(), img3.height(), 50);

 gifH.GifEnd(&writer);

 qDebug() << "Over!";

}