/
mythuiimage.cpp
1455 lines (1213 loc) · 37.3 KB
/
mythuiimage.cpp
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#include "mythuiimage.h"
// C
#include <cstdlib>
// POSIX
#include <stdint.h>
// QT
#include <QFile>
#include <QDir>
#include <QDomDocument>
#include <QImageReader>
#include <QReadWriteLock>
#include <QRunnable>
#include <QEvent>
#include <QCoreApplication>
// Libmythdb
#include "mythverbose.h"
// Mythui
#include "mythpainter.h"
#include "mythmainwindow.h"
#include "mythuihelper.h"
#include "mythscreentype.h"
class ImageLoadThread;
#define LOC QString("MythUIImage(0x%1): ").arg((uintptr_t)this,0,16)
#define LOC_ERR QString("MythUIImage(0x%1) Error: ").arg((uintptr_t)this,0,16)
#define LOC_WARN QString("MythUIImage(0x%1) Warning: ") \
.arg((uintptr_t)this,0,16)
/*!
* \class ImageLoadEvent
*/
class ImageLoadEvent : public QEvent
{
public:
ImageLoadEvent(MythUIImage *parent, MythImage *image,
const QString &basefile, const QString &filename,
int number)
: QEvent(kEventType),
m_parent(parent), m_image(image), m_basefile(basefile),
m_filename(filename), m_number(number) { }
MythUIImage *GetParent() const { return m_parent; }
MythImage *GetImage() const { return m_image; }
const QString GetBasefile() const { return m_basefile; }
const QString GetFilename() const { return m_filename; }
const int GetNumber() const { return m_number; }
static Type kEventType;
private:
MythUIImage *m_parent;
MythImage *m_image;
QString m_basefile;
QString m_filename;
int m_number;
};
QEvent::Type ImageLoadEvent::kEventType =
(QEvent::Type) QEvent::registerEventType();
/*!
* \class ImageLoadThread
*/
class ImageLoadThread : public QRunnable
{
public:
ImageLoadThread(MythUIImage *parent, const QString &basefile,
const QString &filename, int number,
QSize forceSize, ImageCacheMode mode) :
m_parent(parent), m_basefile(basefile),
m_filename(filename), m_number(number),
m_ForceSize(forceSize), m_cacheMode(mode)
{
m_basefile.detach();
m_filename.detach();
}
void run()
{
QString tmpFilename;
if ((m_filename.startsWith("/")) ||
(m_filename.startsWith("http://")) ||
(m_filename.startsWith("https://")) ||
(m_filename.startsWith("ftp://")))
tmpFilename = m_filename;
MythImageReader imageReader(tmpFilename);
if (imageReader.supportsAnimation())
{
m_parent->LoadAnimatedImage(
imageReader, m_filename, m_ForceSize, m_cacheMode);
}
else
{
MythImage *image = m_parent->LoadImage(
imageReader, m_filename, m_ForceSize, m_cacheMode);
ImageLoadEvent *le = new ImageLoadEvent(m_parent, image, m_basefile,
m_filename, m_number);
QCoreApplication::postEvent(m_parent, le);
}
}
private:
MythUIImage *m_parent;
QString m_basefile;
QString m_filename;
int m_number;
QSize m_ForceSize;
ImageCacheMode m_cacheMode;
};
/////////////////////////////////////////////////////////////////
class MythUIImagePrivate
{
public:
MythUIImagePrivate(MythUIImage *p)
: m_parent(p), m_UpdateLock(QReadWriteLock::Recursive)
{ };
~MythUIImagePrivate() {};
MythUIImage *m_parent;
QReadWriteLock m_UpdateLock;
};
/////////////////////////////////////////////////////////////////
QHash<QString, MythUIImage*> MythUIImage::m_loadingImages;
QMutex MythUIImage::m_loadingImagesLock;
QWaitCondition MythUIImage::m_loadingImagesCond;
MythUIImage::MythUIImage(const QString &filepattern,
int low, int high, int delayms,
MythUIType *parent, const QString &name)
: MythUIType(parent, name)
{
m_Filename = filepattern;
m_LowNum = low;
m_HighNum = high;
m_Delay = delayms;
d = new MythUIImagePrivate(this);
Init();
}
MythUIImage::MythUIImage(const QString &filename, MythUIType *parent,
const QString &name)
: MythUIType(parent, name)
{
m_Filename = filename;
m_OrigFilename = filename;
m_LowNum = 0;
m_HighNum = 0;
m_Delay = -1;
d = new MythUIImagePrivate(this);
Init();
}
MythUIImage::MythUIImage(MythUIType *parent, const QString &name)
: MythUIType(parent, name)
{
m_LowNum = 0;
m_HighNum = 0;
m_Delay = -1;
d = new MythUIImagePrivate(this);
Init();
}
MythUIImage::~MythUIImage()
{
// Wait until all image loading threads are complete or bad things
// may happen if this MythUIImage disappears when a queued thread
// needs it.
GetMythUI()->GetImageThreadPool()->waitForDone();
Clear();
if (m_maskImage)
m_maskImage->DownRef();
delete d;
}
/**
* \brief Remove all images from the widget
*/
void MythUIImage::Clear(void)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
QMutexLocker locker(&m_ImagesLock);
while (!m_Images.isEmpty())
{
QHash<int, MythImage*>::iterator it = m_Images.begin();
if (*it)
(*it)->DownRef();
m_Images.remove(it.key());
}
m_Delays.clear();
if (m_animatedImage)
{
m_LowNum = 0;
m_HighNum = 0;
m_animatedImage = false;
}
}
/**
* \brief Reset the image back to the default defined in the theme
*/
void MythUIImage::Reset(void)
{
d->m_UpdateLock.lockForWrite();
if (m_Filename != m_OrigFilename)
{
m_Filename = m_OrigFilename;
if (m_animatedImage)
{
m_LowNum = 0;
m_HighNum = 0;
m_animatedImage = false;
}
d->m_UpdateLock.unlock();
Load();
}
else
d->m_UpdateLock.unlock();
MythUIType::Reset();
}
/**
* \brief Initialises the class
*/
void MythUIImage::Init(void)
{
m_cropRect = MythRect(0,0,0,0);
m_ForceSize = QSize(0,0);
m_CurPos = 0;
m_LastDisplay = QTime::currentTime();
m_NeedLoad = false;
m_isReflected = false;
m_reflectShear = 0;
m_reflectScale = m_reflectLength = 100;
m_reflectAxis = ReflectVertical;
m_reflectSpacing = 0;
m_gradient = false;
m_gradientStart = QColor("#505050");
m_gradientEnd = QColor("#000000");
m_gradientAlpha = 100;
m_gradientDirection = FillTopToBottom;
m_isMasked = false;
m_maskImage = NULL;
m_isGreyscale = false;
m_preserveAspect = false;
m_animationCycle = kCycleStart;
m_animationReverse = false;
m_animatedImage = false;
}
/**
* \brief Set the image filename, does not load the image. See Load()
*/
void MythUIImage::SetFilename(const QString &filename)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
m_Filename = filename;
}
/**
* \brief Set the image filename pattern and integer range for an animated
* image, does not load the image. See Load()
*/
void MythUIImage::SetFilepattern(const QString &filepattern, int low,
int high)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
m_Filename = filepattern;
m_LowNum = low;
m_HighNum = high;
}
/**
* \brief Set the integer range for an animated image pattern
*/
void MythUIImage::SetImageCount(int low, int high)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
m_LowNum = low;
m_HighNum = high;
}
/**
* \brief Set the delay between each image in an animation
*/
void MythUIImage::SetDelay(int delayms)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
m_Delay = delayms;
m_LastDisplay = QTime::currentTime();
m_CurPos = 0;
}
/**
* \brief Sets the delays between each image in an animation
*/
void MythUIImage::SetDelays(QVector<int> delays)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
QMutexLocker imageLocker(&m_ImagesLock);
QVector<int>::iterator it;
for (it = delays.begin(); it != delays.end(); ++it)
m_Delays[m_Delays.size()] = *it;
if (m_Delay == -1)
m_Delay = m_Delays[0];
m_LastDisplay = QTime::currentTime();
m_CurPos = 0;
}
/**
* \brief Assign a MythImage to the widget. Use is strongly discouraged, use
* SetFilename() instead.
*/
void MythUIImage::SetImage(MythImage *img)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
if (!img)
{
Reset();
return;
}
m_Filename = img->GetFileName();
Clear();
m_Delay = -1;
img->UpRef();
if (!m_ForceSize.isNull())
{
int w = (m_ForceSize.width() <= 0) ? img->width() : m_ForceSize.width();
int h = (m_ForceSize.height() <= 0) ? img->height() : m_ForceSize.height();
img->Resize(QSize(w, h), m_preserveAspect);
}
if (m_isReflected && !img->IsReflected())
img->Reflect(m_reflectAxis, m_reflectShear, m_reflectScale,
m_reflectLength, m_reflectSpacing);
if (m_isGreyscale && !img->isGrayscale())
img->ToGreyscale();
if (m_ForceSize.isNull())
SetSize(img->size());
m_ImagesLock.lock();
m_Images[0] = img;
m_Delays.clear();
m_ImagesLock.unlock();
m_CurPos = 0;
SetRedraw();
}
/**
* \brief Assign a set of MythImages to the widget for animation.
* Use is strongly discouraged, use SetFilepattern() instead.
*
*/
void MythUIImage::SetImages(QVector<MythImage *> &images)
{
Clear();
// HACK: This is just a workaround for the buttonlist inheritance problem
// until the image cache is completed.
d->m_UpdateLock.lockForRead();
if (m_gradient)
{
d->m_UpdateLock.unlock();
Load();
return;
}
d->m_UpdateLock.unlock();
QWriteLocker updateLocker(&d->m_UpdateLock);
QSize aSize = GetArea().size();
QVector<MythImage *>::iterator it;
for (it = images.begin(); it != images.end(); ++it)
{
MythImage *im = (*it);
if (!im)
{
QMutexLocker locker(&m_ImagesLock);
m_Images[m_Images.size()] = im;
continue;
}
im->UpRef();
if (!m_ForceSize.isNull())
{
int w = (m_ForceSize.width() <= 0) ? im->width() : m_ForceSize.width();
int h = (m_ForceSize.height() <= 0) ? im->height() : m_ForceSize.height();
im->Resize(QSize(w, h), m_preserveAspect);
}
if (m_isReflected && !im->IsReflected())
im->Reflect(m_reflectAxis, m_reflectShear, m_reflectScale,
m_reflectLength, m_reflectSpacing);
if (m_isGreyscale && !im->isGrayscale())
im->ToGreyscale();
m_ImagesLock.lock();
m_Images[m_Images.size()] = im;
m_ImagesLock.unlock();
aSize = aSize.expandedTo(im->size());
}
SetImageCount(1, m_Images.size());
if (m_ForceSize.isNull())
SetSize(aSize);
m_CurPos = 0;
SetRedraw();
}
/**
* \brief Force the dimensions of the widget and image to the given size.
*/
void MythUIImage::ForceSize(const QSize &size)
{
if (m_ForceSize == size)
return;
d->m_UpdateLock.lockForWrite();
m_ForceSize = size;
d->m_UpdateLock.unlock();
if (size.isEmpty())
return;
SetSize(m_ForceSize);
Load();
return;
}
/**
* \brief Set the size of the widget
*/
void MythUIImage::SetSize(int width, int height)
{
SetSize(QSize(width,height));
}
/**
* \brief Set the size of the widget
*/
void MythUIImage::SetSize(const QSize &size)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
MythUIType::SetSize(size);
m_NeedLoad = true;
}
/**
* \brief Crop the image using the given rectangle, useful for removing
* unsightly edges from imported images or zoom effects
*/
void MythUIImage::SetCropRect(int x, int y, int width, int height)
{
SetCropRect(MythRect(x, y, width, height));
}
/**
* \brief Crop the image using the given rectangle, useful for removing
* unsightly edges from imported images or zoom effects
*/
void MythUIImage::SetCropRect(const MythRect &rect)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
m_cropRect = rect;
SetRedraw();
}
/**
* \brief Generates a unique identifying string for this image which is used
* as a key in the image cache.
*/
QString MythUIImage::GenImageLabel(const QString &filename, int w, int h) const
{
QReadLocker updateLocker(&d->m_UpdateLock);
QString imagelabel;
QString s_Attrib;
if (m_isMasked)
s_Attrib = "masked";
if (m_isReflected)
s_Attrib += "reflected";
if (m_isGreyscale)
s_Attrib += "greyscale";
imagelabel = QString("%1-%2-%3x%4.png")
.arg(filename)
.arg(s_Attrib)
.arg(w)
.arg(h);
imagelabel.replace('/','-');
return imagelabel;
}
/**
* \brief Generates a unique identifying string for this image which is used
* as a key in the image cache.
*/
QString MythUIImage::GenImageLabel(int w, int h) const
{
QReadLocker updateLocker(&d->m_UpdateLock);
return GenImageLabel(m_Filename, w, h);
}
/**
* \brief Load the image(s), wraps LoadImage()
*/
bool MythUIImage::Load(bool allowLoadInBackground, bool forceStat)
{
d->m_UpdateLock.lockForRead();
QSize bForceSize = m_ForceSize;
QString bFilename = m_Filename;
bFilename.detach();
d->m_UpdateLock.unlock();
QString filename = bFilename;
if (bFilename.isEmpty() && (!m_gradient))
{
Clear();
SetRedraw();
return false;
}
Clear();
// SetRedraw();
// if (!IsVisible(true))
// return false;
int w = -1;
int h = -1;
if (!bForceSize.isNull())
{
if (bForceSize.width() != -1)
w = bForceSize.width();
if (bForceSize.height() != -1)
h = bForceSize.height();
}
if (m_gradient)
{
int gradWidth = 10;
int gradHeight = 10;
if (!m_Area.isEmpty())
{
gradWidth = GetArea().size().width();
gradHeight = GetArea().size().height();
}
else if ((w > 0) && (h > 0))
{
gradWidth = w;
gradHeight = h;
}
int sr, sg, sb;
m_gradientStart.getRgb(&sr, &sg, &sb);
int er, eg, eb;
m_gradientEnd.getRgb(&er, &eg, &eb);
d->m_UpdateLock.lockForWrite();
m_Filename =
QString("gradient-%1x%2-%3-%4-%5-%6-%7-%8-%9-%10")
.arg(gradWidth).arg(gradHeight)
.arg(sr).arg(sg).arg(sb).arg(er).arg(eg).arg(eb)
.arg(m_gradientAlpha).arg(m_gradientDirection);
bFilename = m_Filename;
bFilename.detach();
d->m_UpdateLock.unlock();
filename = bFilename;
VERBOSE(VB_GUI|VB_FILE|VB_EXTRA, LOC +
QString("Auto-generated gradient filename of '%1'")
.arg(bFilename));
}
QString imagelabel;
int j = 0;
for (int i = m_LowNum; i <= m_HighNum && !m_animatedImage; i++)
{
if (!m_animatedImage && m_HighNum != m_LowNum &&
bFilename.contains("%1"))
filename = bFilename.arg(i);
imagelabel = GenImageLabel(filename, w, h);
// Only load in the background if allowed and the image is
// not already in our mem cache
ImageCacheMode cacheMode = kCacheCheckMemoryOnly;
if (m_gradient)
cacheMode = kCacheIgnoreDisk;
else if (forceStat)
cacheMode = (ImageCacheMode)
((int)kCacheCheckMemoryOnly | (int)kCacheForceStat);
ImageCacheMode cacheMode2 = (!forceStat) ? kCacheNormal :
(ImageCacheMode) ((int)kCacheNormal | (int)kCacheForceStat);
if ((allowLoadInBackground) &&
(!GetMythUI()->LoadCacheImage(filename, imagelabel,
GetPainter(), cacheMode)) &&
(!getenv("DISABLETHREADEDMYTHUIIMAGE")))
{
VERBOSE(VB_GUI|VB_FILE|VB_EXTRA, LOC + QString(
"Load(), spawning thread to load '%1'").arg(filename));
ImageLoadThread *bImgThread = new ImageLoadThread(
this, bFilename, filename, i, bForceSize, cacheMode2);
GetMythUI()->GetImageThreadPool()->start(bImgThread);
}
else
{
// Perform a blocking load
VERBOSE(VB_GUI|VB_FILE|VB_EXTRA, LOC + QString(
"Load(), loading '%1' in foreground").arg(filename));
QString tmpFilename;
if ((filename.startsWith("/")) ||
(filename.startsWith("http://")) ||
(filename.startsWith("https://")) ||
(filename.startsWith("ftp://")))
tmpFilename = filename;
MythImageReader imageReader(tmpFilename);
if (imageReader.supportsAnimation())
{
LoadAnimatedImage(
imageReader, filename, bForceSize, cacheMode2);
}
else
{
MythImage *image = LoadImage(
imageReader, filename, bForceSize, cacheMode2);
if (image)
{
if (bForceSize.isNull())
SetSize(image->size());
m_ImagesLock.lock();
m_Images[j] = image;
m_ImagesLock.unlock();
SetRedraw();
d->m_UpdateLock.lockForWrite();
m_LastDisplay = QTime::currentTime();
d->m_UpdateLock.unlock();
}
else
{
m_ImagesLock.lock();
m_Images[j] = NULL;
m_ImagesLock.unlock();
}
}
}
++j;
}
return true;
}
/**
* \brief Load an image
*/
MythImage *MythUIImage::LoadImage(
MythImageReader &imageReader, const QString &imFile,
QSize bForceSize, int cacheMode)
{
QString filename = imFile;
m_loadingImagesLock.lock();
// Check to see if the image is being loaded by us in another thread
if ((m_loadingImages.contains(filename)) &&
(m_loadingImages[filename] == this))
{
VERBOSE(VB_GUI|VB_FILE|VB_EXTRA, LOC + QString(
"MythUIImage::LoadImage(%1), this "
"file is already being loaded by this same MythUIImage in "
"another thread.").arg(filename));
m_loadingImagesLock.unlock();
return NULL;
}
// Check to see if the exact same image is being loaded anywhere else
while (m_loadingImages.contains(filename))
m_loadingImagesCond.wait(&m_loadingImagesLock);
m_loadingImages[filename] = this;
m_loadingImagesLock.unlock();
VERBOSE(VB_GUI|VB_FILE, LOC + QString("LoadImage(%2) Object %3")
.arg(filename).arg(objectName()));
MythImage *image = NULL;
bool bForceResize = false;
bool bFoundInCache = false;
QString imagelabel;
int w = -1;
int h = -1;
if (!bForceSize.isNull())
{
if (bForceSize.width() != -1)
w = bForceSize.width();
if (bForceSize.height() != -1)
h = bForceSize.height();
bForceResize = true;
}
imagelabel = GenImageLabel(filename, w, h);
if (!imageReader.supportsAnimation())
{
image = GetMythUI()->LoadCacheImage(
filename, imagelabel, GetPainter(), (ImageCacheMode) cacheMode);
}
if (image)
{
image->UpRef();
VERBOSE(VB_GUI|VB_FILE, LOC +
QString("LoadImage found in cache :%1: RefCount = %2")
.arg(imagelabel).arg(image->RefCount()));
if (m_isReflected)
image->setIsReflected(true);
bFoundInCache = true;
}
else
{
if (m_gradient)
{
VERBOSE(VB_GUI|VB_FILE, LOC +
QString("LoadImage Not Found in cache. "
"Creating Gradient :%1:").arg(filename));
QSize gradsize;
if (!m_Area.isEmpty())
gradsize = GetArea().size();
else
gradsize = QSize(10, 10);
image = MythImage::Gradient(GetPainter(), gradsize, m_gradientStart,
m_gradientEnd, m_gradientAlpha,
m_gradientDirection);
image->UpRef();
}
else
{
VERBOSE(VB_GUI|VB_FILE, LOC +
QString("LoadImage Not Found in cache. "
"Loading Directly :%1:").arg(filename));
image = GetPainter()->GetFormatImage();
image->UpRef();
bool ok = false;
if (imageReader.supportsAnimation())
ok = image->Load(imageReader);
else
ok = image->Load(filename);
if (!ok)
{
image->DownRef();
m_loadingImagesLock.lock();
m_loadingImages.remove(filename);
m_loadingImagesCond.wakeAll();
m_loadingImagesLock.unlock();
return NULL;
}
}
}
if (!bFoundInCache)
{
if (bForceResize)
image->Resize(QSize(w, h), m_preserveAspect);
if (m_isMasked)
{
QRect imageArea = image->rect();
QRect maskArea = m_maskImage->rect();
// Crop the mask to the image
int x = 0;
int y = 0;
if (maskArea.width() > imageArea.width())
x = (maskArea.width() - imageArea.width()) / 2;
if (maskArea.height() > imageArea.height())
y = (maskArea.height() - imageArea.height()) / 2;
if (x > 0 || y > 0)
imageArea.translate(x,y);
d->m_UpdateLock.lockForWrite();
QImage mask = m_maskImage->copy(imageArea);
d->m_UpdateLock.unlock();
image->setAlphaChannel(mask.alphaChannel());
}
if (m_isReflected)
image->Reflect(m_reflectAxis, m_reflectShear, m_reflectScale,
m_reflectLength, m_reflectSpacing);
if (m_isGreyscale)
image->ToGreyscale();
if (!imageReader.supportsAnimation())
GetMythUI()->CacheImage(imagelabel, image);
}
if (image->isNull())
{
VERBOSE(VB_GUI|VB_FILE, LOC + QString("LoadImage Image is NULL :%1:")
.arg(filename));
image->DownRef();
Reset();
m_loadingImagesLock.lock();
m_loadingImages.remove(filename);
m_loadingImagesCond.wakeAll();
m_loadingImagesLock.unlock();
return NULL;
}
image->SetChanged();
m_loadingImagesLock.lock();
m_loadingImages.remove(filename);
m_loadingImagesCond.wakeAll();
m_loadingImagesLock.unlock();
return image;
}
/**
* \brief Load an animated image
*/
bool MythUIImage::LoadAnimatedImage(
MythImageReader &imageReader, const QString &imFile,
QSize bForceSize, int cacheMode)
{
bool result = false;
m_loadingImagesLock.lock();
// Check to see if the image is being loaded by us in another thread
if ((m_loadingImages.contains(imFile)) &&
(m_loadingImages[imFile] == this))
{
VERBOSE(VB_GUI|VB_FILE|VB_EXTRA, LOC + QString(
"MythUIImage::LoadAnimatedImage(%1), this "
"file is already being loaded by this same MythUIImage in "
"another thread.").arg(imFile));
m_loadingImagesLock.unlock();
return result;
}
// Check to see if the exact same image is being loaded anywhere else
while (m_loadingImages.contains(imFile))
m_loadingImagesCond.wait(&m_loadingImagesLock);
m_loadingImages[imFile] = this;
m_loadingImagesLock.unlock();
QString filename = QString("frame-%1-") + imFile;
QString frameFilename;
QVector<MythImage *> images;
QVector<int> delays;
int imageCount = 1;
QString imageLabel;
int w = -1;
int h = -1;
if (!bForceSize.isNull())
{
if (bForceSize.width() != -1)
w = bForceSize.width();
if (bForceSize.height() != -1)
h = bForceSize.height();
}
while (imageReader.canRead())
{
frameFilename = filename.arg(imageCount);
imageLabel = GenImageLabel(frameFilename, w, h);
MythImage *im = LoadImage(
imageReader, frameFilename,
bForceSize, (ImageCacheMode) cacheMode);
if (!im)
break;
images.append(im);
delays.append(imageReader.nextImageDelay());
imageCount++;
}
if (images.size())
{
m_animatedImage = true;
SetImages(images);
if ((m_Delay == -1) &&
(imageReader.supportsAnimation()) &&
(delays.size()))
{
SetDelays(delays);
}
result = true;
}
m_loadingImagesLock.lock();
m_loadingImages.remove(imFile);
m_loadingImagesCond.wakeAll();
m_loadingImagesLock.unlock();
return result;
}
/**
* \copydoc MythUIType::Pulse()
*/
void MythUIImage::Pulse(void)
{
QWriteLocker updateLocker(&d->m_UpdateLock);
int delay = -1;
if (m_Delays.contains(m_CurPos))
delay = m_Delays[m_CurPos];