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ImageViewer.cpp
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/*
* Copyright (C) 2013-2014 Ofer Kashayov - oferkv@live.com
* This file is part of Phototonic Image Viewer.
*
* Phototonic is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Phototonic is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Phototonic. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
#include <QCheckBox>
#include <QClipboard>
#include <QDir>
#include <QFileDialog>
#include <QFileInfo>
#include <QImageReader>
#include <QLabel>
#include <QLoggingCategory>
#include <QMenu>
#include <QMouseEvent>
#include <QMovie>
#include <QPainter>
#include <QScrollBar>
#include <QThread>
#include <QTimer>
#include <QWheelEvent>
#include "CropDialog.h"
#include "CropRubberband.h"
#include "ImageWidget.h"
#include "ImageViewer.h"
#include "MessageBox.h"
#include "MetadataCache.h"
#include "Settings.h"
#define CLIPBOARD_IMAGE_NAME "clipboard.png"
#define ROUND(x) ((int) ((x) + 0.5))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
namespace { // anonymous, not visible outside of this file
Q_DECLARE_LOGGING_CATEGORY(PHOTOTONIC_EXIV2_LOG)
Q_LOGGING_CATEGORY(PHOTOTONIC_EXIV2_LOG, "phototonic.exif", QtCriticalMsg)
struct Exiv2LogHandler {
static void handleMessage(int level, const char *message) {
switch(level) {
case Exiv2::LogMsg::debug:
qCDebug(PHOTOTONIC_EXIV2_LOG) << message;
break;
case Exiv2::LogMsg::info:
qCInfo(PHOTOTONIC_EXIV2_LOG) << message;
break;
case Exiv2::LogMsg::warn:
case Exiv2::LogMsg::error:
case Exiv2::LogMsg::mute:
qCWarning(PHOTOTONIC_EXIV2_LOG) << message;
break;
default:
qCWarning(PHOTOTONIC_EXIV2_LOG) << "unhandled log level" << level << message;
break;
}
}
Exiv2LogHandler() {
Exiv2::LogMsg::setHandler(&Exiv2LogHandler::handleMessage);
}
};
class ClickToClose : public QObject {
public:
ClickToClose() : QObject() {}
protected:
bool eventFilter(QObject *o, QEvent *e) {
if (e->type() == QEvent::MouseButtonRelease)
static_cast<QWidget*>(o)->hide();
return false;
}
};
} // anonymous namespace
ClickToClose *gs_clickToClose = nullptr;
ImageViewer::ImageViewer(QWidget *parent) : QScrollArea(parent) {
// This is a threadsafe way to ensure that we only register it once
static Exiv2LogHandler handler;
if (!gs_clickToClose)
gs_clickToClose = new ClickToClose;
m_letterbox = QRect(QPoint(0,0), QPoint(100,100));
myContextMenu = nullptr;
cursorIsHidden = false;
moveImageLocked = false;
imageWidget = new ImageWidget;
imageWidget->setLetterbox(m_letterbox);
m_crossfade = false;
imageWidget->setCrossfade(m_crossfade);
animation = nullptr;
setContentsMargins(0, 0, 0, 0);
setAlignment(Qt::AlignCenter);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setFrameStyle(0);
setWidget(imageWidget);
setWidgetResizable(false);
setBackgroundColor();
myFilenameLabel = new QLabel(this);
myFilenameLabel->setVisible(Settings::showImageName);
myFilenameLabel->setMargin(3);
myFilenameLabel->move(10, 10);
myFilenameLabel->setAutoFillBackground(true);
myFilenameLabel->setFrameStyle(QFrame::Plain|QFrame::NoFrame);
QPalette pal = myFilenameLabel->palette();
pal.setColor(myFilenameLabel->backgroundRole(), QColor(0,0,0,128));
pal.setColor(myFilenameLabel->foregroundRole(), QColor(255,255,255,128));
myFilenameLabel->setPalette(pal);
feedbackLabel = new QLabel(this);
feedbackLabel->setVisible(false);
feedbackLabel->setMargin(3);
feedbackLabel->setFrameStyle(QFrame::Plain|QFrame::NoFrame);
feedbackLabel->setAutoFillBackground(true);
feedbackLabel->setPalette(pal);
feedbackLabel->installEventFilter(gs_clickToClose);
mouseMovementTimer = new QTimer(this);
connect(mouseMovementTimer, SIGNAL(timeout()), this, SLOT(monitorCursorState()));
Settings::hueVal = 0;
Settings::saturationVal = 100;
Settings::lightnessVal = 100;
Settings::hueRedChannel = true;
Settings::hueGreenChannel = true;
Settings::hueBlueChannel = true;
Settings::contrastVal = 78;
Settings::brightVal = 100;
Settings::dialogLastX = Settings::dialogLastY = 0;
Settings::mouseRotateEnabled = false;
newImage = false;
cropRubberBand = 0;
}
static unsigned int getHeightByWidth(int imgWidth, int imgHeight, int newWidth) {
return qRound(imgHeight * newWidth / double(imgWidth));
}
static unsigned int getWidthByHeight(int imgHeight, int imgWidth, int newHeight) {
return qRound(imgWidth * newHeight / double(imgHeight));
}
static inline int calcZoom(int size) {
return qRound(size * Settings::imageZoomFactor);
}
void ImageViewer::resizeImage(QPoint focus) {
static bool busy = false;
if (busy)
return;
QSize imageSize = animation ? animation->currentPixmap().size() : imageWidget->image().size();
if (imageSize.isEmpty())
return;
busy = true;
QSize originalImageSize = imageSize;
imageSize *= Settings::imageZoomFactor;
if (tempDisableResize) { // calcZoom to identity
Settings::imageZoomFactor = 1.0;
}
switch (Settings::zoomInFlags) {
case Disable:
if (imageSize.width() <= width() && imageSize.height() <= height()) {
imageSize.scale(calcZoom(imageSize.width()), calcZoom(imageSize.height()), Qt::KeepAspectRatio);
}
break;
case WidthAndHeight:
if (imageSize.width() <= width() && imageSize.height() <= height()) {
imageSize.scale(calcZoom(width()), calcZoom(height()), Qt::KeepAspectRatio);
}
break;
case Width:
if (imageSize.width() <= width()) {
imageSize.scale(calcZoom(width()), calcZoom(getHeightByWidth(imageSize.width(), imageSize.height(), width())), Qt::KeepAspectRatio);
}
break;
case Height:
if (imageSize.height() <= height()) {
imageSize.scale(calcZoom(getWidthByHeight(imageSize.height(), imageSize.width(), height())), calcZoom(height()), Qt::KeepAspectRatio);
}
break;
case Disprop:
imageSize.scale(calcZoom(qMax(imageSize.width(), width())), calcZoom(qMax(imageSize.height(), height())), Qt::IgnoreAspectRatio);
break;
}
switch (Settings::zoomOutFlags) {
case Disable:
if (imageSize.width() >= width() || imageSize.height() >= height()) {
imageSize.scale(calcZoom(imageSize.width()), calcZoom(imageSize.height()), Qt::KeepAspectRatio);
}
break;
case WidthAndHeight:
if (imageSize.width() >= width() || imageSize.height() >= height()) {
imageSize.scale(calcZoom(width()), calcZoom(height()), Qt::KeepAspectRatio);
}
break;
case Width:
if (imageSize.width() >= width()) {
imageSize.scale(calcZoom(width()), calcZoom(getHeightByWidth(imageSize.width(), imageSize.height(), width())), Qt::KeepAspectRatio);
}
break;
case Height:
if (imageSize.height() >= height()) {
imageSize.scale(calcZoom(getWidthByHeight(imageSize.height(), imageSize.width(), height())), calcZoom(height()), Qt::KeepAspectRatio);
}
break;
case Disprop:
imageSize.scale(calcZoom(qMin(imageSize.width(), width())), calcZoom(qMin(imageSize.height(), height())), Qt::IgnoreAspectRatio);
break;
}
if (tempDisableResize) {
Settings::imageZoomFactor = (float(originalImageSize.width())/imageSize.width() +
float(originalImageSize.height())/imageSize.height())/2.0;
imageSize = originalImageSize;
imageSize.scale(imageSize.width(), imageSize.height(), Qt::KeepAspectRatio);
}
if (imageWidget) {
Qt::Orientations orient;
if (Settings::flipH) orient |= Qt::Horizontal;
if (Settings::flipV) orient |= Qt::Vertical;
imageWidget->setFlip(orient);
imageWidget->setRotation(Settings::rotation);
imageWidget->setFixedSize(size());
if (imageSize.width() < width() || imageSize.height() < height()) {
centerImage(imageSize);
} else {
const double fx = double(imageSize.width())/imageWidget->imageSize().width(),
fy = double(imageSize.height())/imageWidget->imageSize().height();
int x,y;
if (focus.x() > -1 && focus.y() > -1) {
x = qRound(fx*(imageWidget->imagePosition().x() - focus.x()) + focus.x());
y = qRound(fy*(imageWidget->imagePosition().y() - focus.y()) + focus.y());
} else {
x = qRound(imageWidget->imagePosition().x()*fx);
y = qRound(imageWidget->imagePosition().y()*fy);
}
if (imageSize.width() >= width())
x = qMax(qMin(x, 0), width() - imageSize.width());
if (imageSize.height() >= height())
y = qMax(qMin(y, 0), height() - imageSize.height());
imageWidget->setImagePosition(QPoint(x,y));
}
imageWidget->setImageSize(imageSize);
} else {
widget()->setFixedSize(imageSize);
// widget()->adjustSize();
if (imageSize.width() < width() + 100 || imageSize.height() < height() + 100) {
centerImage(imageSize);
} else {
float positionY = verticalScrollBar()->value() > 0 ? verticalScrollBar()->value() / float(verticalScrollBar()->maximum()) : 0;
float positionX = horizontalScrollBar()->value() > 0 ? horizontalScrollBar()->value() / float(horizontalScrollBar()->maximum()) : 0;
horizontalScrollBar()->setValue(horizontalScrollBar()->maximum() * positionX);
verticalScrollBar()->setValue(verticalScrollBar()->maximum() * positionY);
}
}
busy = false;
}
void ImageViewer::scaleImage(QSize newSize) {
origImage = origImage.scaled(newSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
refresh();
setFeedback(tr("New image size: %1x%2").arg(origImage.width()).arg(origImage.height()));
emit imageEdited(true);
}
void ImageViewer::resizeEvent(QResizeEvent *event) {
QWidget::resizeEvent(event);
const bool mapCrop = imageWidget && cropRubberBand && cropRubberBand->isVisibleTo(this);
QRect isoCropRect;
if (mapCrop) {
QTransform matrix = imageWidget->transformation().inverted();
isoCropRect = matrix.mapRect(cropRubberBand->geometry());
}
resizeImage();
if (mapCrop) {
QTransform matrix = imageWidget->transformation();
cropRubberBand->setGeometry(matrix.mapRect(isoCropRect));
}
}
void ImageViewer::showEvent(QShowEvent *event) {
QWidget::showEvent(event);
resizeImage();
}
void ImageViewer::centerImage(QSize imgSize) {
if (imageWidget) {
imageWidget->setImagePosition(QPoint((imageWidget->width() - imgSize.width())/2, (imageWidget->height() - imgSize.height())/2));
} else {
ensureVisible(imgSize.width()/2, imgSize.height()/2, width()/2, height()/2);
}
}
static inline int bound0To255(int val) {
return ((val > 255) ? 255 : (val < 0) ? 0 : val);
}
static inline int hslValue(float n1, float n2, int hue) {
double value;
if (hue > 255) {
hue -= 255;
} else if (hue < 0) {
hue += 255;
}
if (hue < 42.5f) {
value = n1 + (n2 - n1) * (hue / 42.5f);
} else if (hue < 127.5f) {
value = n2;
} else if (hue < 170) {
value = n1 + (n2 - n1) * ((170 - hue) / 42.5f);
} else {
value = n1;
}
return ROUND(value * 255.0f);
}
void rgbToHsl(int r, int g, int b, unsigned char *hue, unsigned char *sat, unsigned char *light) {
float h, s, l;
int min, max;
int delta;
if (r > g) {
max = MAX(r, b);
min = MIN(g, b);
} else {
max = MAX(g, b);
min = MIN(r, b);
}
l = (max + min) / 2.0f;
if (max == min) {
s = 0.0;
h = 0.0;
} else {
delta = (max - min);
if (l < 128) {
s = 255 * delta / float(max + min);
} else {
s = 255 * delta / float(511 - max - min);
}
if (r == max) {
h = (g - b) / float(delta);
} else if (g == max) {
h = 2 + (b - r) / float(delta);
} else {
h = 4 + (r - g) / float(delta);
}
h = h * 42.5f;
if (h < 0) {
h += 255;
} else if (h > 255) {
h -= 255;
}
}
*hue = ROUND(h);
*sat = ROUND(s);
*light = ROUND(l);
}
void hslToRgb(int h, int s, int l,
unsigned char *red, unsigned char *green, unsigned char *blue) {
if (s == 0) {
/* achromatic case */
*red = l;
*green = l;
*blue = l;
} else {
float m1, m2;
if (l < 128)
m2 = (l * (255 + s)) / 65025.0f;
else
m2 = (l + s - (l * s) / 255.0f) / 255.0f;
m1 = (l / 127.5f) - m2;
/* chromatic case */
*red = hslValue(m1, m2, h + 85);
*green = hslValue(m1, m2, h);
*blue = hslValue(m1, m2, h - 85);
}
}
static int linesDone = 0;
void ImageViewer::colorize(uchar *bits, int bytesPerLine, int startLine, int endLine, const unsigned char (*contrastTransform)[256], const unsigned char (*brightTransform)[256]) {
unsigned char hr, hg, hb;
unsigned char h, s, l;
int r, g, b;
QRgb *line;
bool hasAlpha = viewerImage.hasAlphaChannel();
// int ciddqd = 0;
QRgb iddqd[2] = {qRgba(0,0,0,0), qRgba(0,0,0,0)};
for (int y = startLine; y < endLine; ++y) {
line = reinterpret_cast<QRgb*>(bits + (y * bytesPerLine));
for (int x = 0; x < viewerImage.width(); ++x) {
// Cheat, maybe the pixel is the same as the previous
QRgb rgb = qRgb(qRed(line[x]), qGreen(line[x]), qBlue(line[x]));
if (iddqd[0] == rgb) {
// ++ciddqd;
rgb = iddqd[1];
line[x] = hasAlpha ? qRgba(qRed(rgb), qGreen(rgb), qBlue(rgb), qAlpha(line[x])) : rgb;
continue;
}
r = qRed(rgb);
if (Settings::hueRedChannel) {
if (Settings::rNegateEnabled)
r = 255 - r;
r = bound0To255((r * (Settings::redVal + 100)) / 100);
r = (*brightTransform)[r];
r = (*contrastTransform)[r];
}
g = qGreen(rgb);
if (Settings::hueGreenChannel) {
if (Settings::gNegateEnabled)
g = 255 - g;
g = bound0To255((g * (Settings::greenVal + 100)) / 100);
g = (*brightTransform)[g];
g = (*contrastTransform)[g];
}
b = qBlue(rgb);
if (Settings::hueBlueChannel) {
if (Settings::bNegateEnabled)
b = 255 - b;
b = bound0To255((b * (Settings::blueVal + 100)) / 100);
b = (*brightTransform)[b];
b = (*contrastTransform)[b];
}
if (Settings::hueVal != 0 || Settings::saturationVal != 100 || Settings::lightnessVal != 100) {
rgbToHsl(r, g, b, &h, &s, &l);
h = Settings::colorizeEnabled ? Settings::hueVal : h + Settings::hueVal;
s = bound0To255(((s * Settings::saturationVal) / 100));
l = bound0To255(((l * Settings::lightnessVal) / 100));
hslToRgb(h, s, l, &hr, &hg, &hb);
if (Settings::hueRedChannel)
r = hr;
if (Settings::hueGreenChannel)
g = hg;
if (Settings::hueBlueChannel)
b = hb;
}
iddqd[0] = rgb;
iddqd[1] = rgb = qRgb(r, g, b);
line[x] = hasAlpha ? qRgba(r, g, b, qAlpha(line[x])) : rgb;
linesDone = y;
}
}
}
void ImageViewer::colorize() {
switch(viewerImage.format()) {
case QImage::Format_RGB32:
case QImage::Format_ARGB32:
case QImage::Format_ARGB32_Premultiplied:
break;
default:
viewerImage = viewerImage.convertToFormat(QImage::Format_RGB32);
}
float contrast = ((float) Settings::contrastVal / 100.0);
float brightness = ((float) Settings::brightVal / 100.0);
static unsigned char contrastTransform[256];
static unsigned char brightTransform[256];
for (int i = 0; i < 256; ++i) {
if (i < (int) (128.0f + 128.0f * tan(contrast)) && i > (int) (128.0f - 128.0f * tan(contrast))) {
contrastTransform[i] = bound0To255((i - 128) / tan(contrast) + 128);
} else if (i >= (int) (128.0f + 128.0f * tan(contrast))) {
contrastTransform[i] = 255;
} else {
contrastTransform[i] = 0;
}
}
for (int i = 0; i < 256; ++i) {
brightTransform[i] = bound0To255(int((255.0 * pow(i / 255.0, 1.0 / brightness)) + 0.5));
}
// QElapsedTimer profiler;
// profiler.start();
const int threadCount = qMin(QThread::idealThreadCount(), viewerImage.height()/512);
uchar *bits;
if (viewerImage.constBits() == origImage.constBits()) {
bits = viewerImage.bits(); // detach to preserve origImage
} else {
bits = const_cast<uchar*>(viewerImage.constBits());
}
const int bpl = viewerImage.bytesPerLine();
if (!threadCount) {
colorize(bits, bpl, 0, viewerImage.height(), &contrastTransform, &brightTransform);
} else {
QThread **threads = new QThread*[threadCount];
int batch = viewerImage.height()/threadCount;
if (threadCount > 1) {
for (int i = 0; i < threadCount-1; ++i) {
threads[i] = QThread::create([=](){colorize(bits, bpl, i*batch, (i+1)*batch, &contrastTransform, &brightTransform);});
threads[i]->start();
}
}
threads[threadCount-1] = QThread::create([=](){colorize(bits, bpl, (threadCount-1)*batch, viewerImage.height(), &contrastTransform, &brightTransform);});
threads[threadCount-1]->start();
#if 1
// live updates make things slower but give the user the comfort that sth's going on
bool done = false;
int cycle = 1;
while (!done) {
done = true;
for (int i = 0; i < threadCount; ++i) {
if (!threads[i]->wait(250)) {
done = false;
// the threads update linesDone independently and we just guess that they run at
// the same speed, then predict how long this is gonna take and avoid "late" previews
// that would cause overall slowdown
if (float(threadCount*linesDone)/viewerImage.height() < 1.0f-1.0f/++cycle) {
// we need to wrap the altered bits in a new image to make Qt/QGLWidget
// understand/believe that there's sth. to update here
// the final update in ::refresh is fine because viewerImage got detached
imageWidget->setImage(QImage(viewerImage.constBits(), viewerImage.width(),
viewerImage.height(), viewerImage.bytesPerLine(),
viewerImage.format()), m_exifTransformation);
resizeImage();
imageWidget->repaint();
}
break;
}
}
}
#else
for (int i = 0; i < threadCount; ++i)
threads[i]->wait();
#endif
for (int i = 0; i < threadCount; ++i)
delete threads[i];
delete [] threads;
}
// qDebug() << profiler.elapsed() << threadCount; // << "IDDQD:" << ciddqd;
emit imageEdited(true);
}
void ImageViewer::refresh() {
if (!imageWidget) {
return;
}
viewerImage = origImage;
if (Settings::colorsActive) {
colorize();
}
imageWidget->setImage(viewerImage, m_exifTransformation);
resizeImage();
}
void ImageViewer::setImage(const QImage &image) {
if (movieWidget) {
delete movieWidget;
movieWidget = nullptr;
imageWidget = new ImageWidget;
imageWidget->setLetterbox(m_letterbox);
imageWidget->setCrossfade(m_crossfade);
setWidget(imageWidget);
}
imageWidget->setImage(image, m_exifTransformation);
}
void ImageViewer::reload() {
emit imageEdited(false);
static bool s_busy = false;
static bool s_abort = false;
if (s_busy) {
s_abort = true;
QMetaObject::invokeMethod(this, "reload", Qt::QueuedConnection);
return;
}
// setFeedback("",false);
if (Settings::showImageName) {
if (fullImagePath.left(1) == ":") {
setInfo("No Image");
} else if (fullImagePath.isEmpty()) {
setInfo("Clipboard");
} else {
setInfo(QFileInfo(fullImagePath).fileName());
}
}
if (!Settings::keepTransform) {
Settings::rotation = 0;
Settings::flipH = Settings::flipV = false;
}
if (!batchMode) {
Settings::mouseRotateEnabled = false;
emit toolsUpdated();
if (newImage || fullImagePath.isEmpty()) {
newImage = true;
fullImagePath = CLIPBOARD_IMAGE_NAME;
origImage.load(":/images/no_image.png");
viewerImage = origImage;
setImage(viewerImage);
pasteImage();
return;
}
}
QImageReader imageReader(fullImagePath);
if (batchMode && imageReader.supportsAnimation()) {
//: this is a warning on the console
qWarning() << tr("skipping animation in batch mode:") << fullImagePath;
return;
}
if (Settings::enableAnimations && imageReader.supportsAnimation()) {
if (animation) {
delete animation;
animation = nullptr;
}
animation = new QMovie(fullImagePath);
if (animation->frameCount() > 1) {
if (!movieWidget) {
movieWidget = new QLabel();
movieWidget->setScaledContents(true);
setWidget(movieWidget); // deletes imageWidget
imageWidget = nullptr;
}
movieWidget->setMovie(animation);
animation->setParent(movieWidget);
animation->start();
resizeImage();
return;
}
}
// clean up - don't waste memory and bogus 1-frame gifs will otherwise kill resizeImage()
delete animation;
animation = nullptr;
// It's not a movie
if (fullImagePath == m_preloadedPath) {
viewerImage = origImage = m_preloadedImage;
m_preloadedImage = QImage();
m_preloadedPath.clear();
} else if (imageReader.size().isValid()) {
QSize sz = imageReader.size();
if (sz.width() * sz.height() > 8192*8192) { // allocation limit
/// @todo this and the correct sqrt(double…) of the below still runs into the size limts?
// perhaps because qimagereader overreads and needs some extra memory
// sz.scale(8192,8192, Qt::KeepAspectRatio);
double factor = double(8192*8192)/(sz.width() * sz.height());
// the sqrt is correct, but too large - the square of the true factor will over"punish" large images
// so we draw an average - this is by "shows the most annoying supersize image I have"
factor = (2*factor + sqrt(factor))/3.0;
sz *= factor;
imageReader.setScaledSize(sz);
setFeedback(tr( "<h1>Warning</h1>Original image size %1x%2 exceeds limits<br>"
"Downscaled to %3x%4<br><h3>Saving edits will save the smaller image!</h3>")
.arg(imageReader.size().width()).arg(imageReader.size().height())
.arg(sz.width()).arg(sz.height()), 10000);
}
bool imageOk = false;
if (batchMode || Settings::slideShowActive) {
imageOk = imageReader.read(&origImage);
} else {
QThread *thread = QThread::create([&](){imageOk = imageReader.read(&origImage);});
thread->start();
s_busy = true;
while (!thread->wait(30)) {
QApplication::processEvents();
if (s_abort) {
thread->terminate();
thread->wait();
break;
}
}
s_busy = false;
thread->deleteLater();
if (s_abort) {
s_abort = false;
return;
}
}
if (imageOk) {
if (Settings::exifRotationEnabled) {
m_exifTransformation = Metadata::transformation(fullImagePath);
origImage = origImage.transformed(Metadata::transformation(fullImagePath), Qt::SmoothTransformation);
}
viewerImage = origImage;
if (Settings::colorsActive) {
colorize();
}
} else {
viewerImage = QImage(":/images/error_image.png");
setFeedback(QFileInfo(imageReader.fileName()).fileName() + ": " + imageReader.errorString());
}
}
setImage(viewerImage);
resizeImage();
centerImage(imageWidget->imageSize());
if (Settings::keepTransform) {
Qt::Orientations orient;
if (Settings::flipH) orient |= Qt::Horizontal;
if (Settings::flipV) orient |= Qt::Vertical;
imageWidget->setFlip(orient);
imageWidget->setRotation(Settings::rotation);
}
if (Settings::setWindowIcon) {
window()->setWindowIcon(QPixmap::fromImage(viewerImage.scaled(WINDOW_ICON_SIZE, WINDOW_ICON_SIZE,
Qt::KeepAspectRatio, Qt::SmoothTransformation)));
}
}
void ImageViewer::setInfo(QString infoString) {
myFilenameLabel->setText(infoString);
myFilenameLabel->adjustSize();
}
void ImageViewer::unsetFeedback() {
if (m_permanentFeedback.isEmpty()) {
feedbackLabel->clear();
feedbackLabel->setVisible(false);
} else {
setFeedback(m_permanentFeedback, false);
}
}
void ImageViewer::setFeedback(QString feedbackString, int timeLimited) {
if (!timeLimited)
m_permanentFeedback = feedbackString;
if (feedbackString.isEmpty()) {
unsetFeedback();
return;
}
feedbackLabel->setText(feedbackString);
feedbackLabel->setVisible(true/* Settings::layoutMode == Phototonic::ImageViewWidget */);
int margin = myFilenameLabel->isVisible() ? (myFilenameLabel->height() + 15) : 10;
feedbackLabel->move(10, margin);
feedbackLabel->adjustSize();
if (timeLimited) {
static QTimer *unsetFeedbackTimer = nullptr;
if (!unsetFeedbackTimer) {
unsetFeedbackTimer = new QTimer(this);
unsetFeedbackTimer->setSingleShot(true);
connect (unsetFeedbackTimer, &QTimer::timeout, this, &ImageViewer::unsetFeedback);
}
unsetFeedbackTimer->setInterval(timeLimited);
unsetFeedbackTimer->start();
}
}
void ImageViewer::loadImage(QString imageFileName, const QImage &preview) {
if (fullImagePath == imageFileName)
return;
unsetFeedback();
newImage = false;
fullImagePath = imageFileName;
if (!Settings::keepZoomFactor) {
tempDisableResize = false;
Settings::imageZoomFactor = 1.0;
}
if (!preview.isNull()) {
QSize fullSize = QImageReader(fullImagePath).size();
// don't preview small images w/ a huge thumbnail upscale
// it's pointless and causes ugly flicker
if (!fullSize.isValid() || (fullSize.width() > 4*width()/5 && fullSize.height() > 4*height()/5)) {
setImage(preview);
const int zif = Settings::zoomInFlags;
const bool disRes = tempDisableResize;
tempDisableResize = false;
Settings::zoomInFlags = WidthAndHeight;
resizeImage();
Settings::zoomInFlags = zif;
tempDisableResize = disRes;
}
}
QApplication::processEvents();
reload();
}
void ImageViewer::preload(QString imageFileName) {
if (m_preloadedPath == imageFileName)
return;
m_preloadedPath = imageFileName;
// reload current one - maybe the file has changed on disk?
/*if (m_preloadedPath == fullImagePath) {
m_preloadedImage = origImage;
return;
}*/
QImageReader imageReader(m_preloadedPath);
if (imageReader.supportsAnimation()) {
m_preloadedImage = QImage();
m_preloadedPath.clear();
return; // no preloading animations
}
if (imageReader.size().isValid() && imageReader.read(&m_preloadedImage)) {
if (Settings::exifRotationEnabled) {
m_preloadedImage = m_preloadedImage.transformed(Metadata::transformation(fullImagePath), Qt::SmoothTransformation);
}
} else {
m_preloadedImage = QImage();
m_preloadedPath.clear();
}
}
void ImageViewer::clearImage() {
fullImagePath.clear();
origImage.load(":/images/no_image.png");
viewerImage = origImage;
setImage(viewerImage);
}
void ImageViewer::setContextMenu(QMenu *menu) {
delete myContextMenu;
myContextMenu = menu;
myContextMenu->setParent(this);
}
void ImageViewer::setCrossfade(bool yesno) {
m_crossfade = yesno;
if (imageWidget)
imageWidget->setCrossfade(m_crossfade);
}
void ImageViewer::monitorCursorState() {
static QPoint lastPos;
if (QCursor::pos() != lastPos) {
lastPos = QCursor::pos();
if (cursorIsHidden) {
QApplication::restoreOverrideCursor();
cursorIsHidden = false;
}
} else {
if (!cursorIsHidden) {
QApplication::setOverrideCursor(Qt::BlankCursor);
cursorIsHidden = true;
}
}
}
void ImageViewer::setCursorHiding(bool hide) {
if (hide) {
mouseMovementTimer->start(500);
} else {
mouseMovementTimer->stop();
if (cursorIsHidden) {
QApplication::restoreOverrideCursor();
cursorIsHidden = false;
}
}
}
void ImageViewer::mouseDoubleClickEvent(QMouseEvent *event) {
QWidget::mouseDoubleClickEvent(event);
while (QApplication::overrideCursor()) {
QApplication::restoreOverrideCursor();
}
}
void ImageViewer::mousePressEvent(QMouseEvent *event) {
if (!imageWidget) {
return;
}
if (event->button() == Qt::LeftButton) {
if (event->modifiers() == Qt::ControlModifier) {
cropOrigin = event->pos();
if (!cropRubberBand) {
cropRubberBand = new CropRubberBand(this);
connect(cropRubberBand, &CropRubberBand::selectionChanged,
this, &ImageViewer::updateRubberBandFeedback);
connect(cropRubberBand, &CropRubberBand::cropConfirmed,
this, &ImageViewer::applyCropAndRotation);
}
cropRubberBand->show();
cropRubberBand->setGeometry(QRect(cropOrigin, event->pos()).normalized());
} else if (!(Settings::mouseRotateEnabled || event->modifiers() == Qt::ShiftModifier)) {
if (cropRubberBand && cropRubberBand->isVisible()) {
cropRubberBand->hide();
setFeedback("", false);
}
}
QPointF fulcrum(QPointF(imageWidget->width() / 2.0, imageWidget->height() / 2.0));
QLineF vector(fulcrum, event->position());
initialRotation = imageWidget->rotation() + vector.angle();
setMouseMoveData(true, event->position().x(), event->position().y());
QApplication::setOverrideCursor(Qt::ClosedHandCursor);
event->accept();
}
QWidget::mousePressEvent(event);
}
void ImageViewer::mouseReleaseEvent(QMouseEvent *event) {
if (event->button() == Qt::LeftButton) {
setMouseMoveData(false, 0, 0);
while (QApplication::overrideCursor()) {
QApplication::restoreOverrideCursor();
}
}
QWidget::mouseReleaseEvent(event);
}
void ImageViewer::updateRubberBandFeedback(QRect geom) {
if (!imageWidget) {
return;
}
bool ok;
QTransform matrix = imageWidget->transformation().inverted(&ok);
if (!ok)
qDebug() << "something's fucked up about the transformation matrix!";
m_isoCropRect = geom = matrix.mapRect(geom);
setFeedback(tr("Selection: ") + QString("%1x%2").arg(geom.width()).arg(geom.height())
+ QString(geom.x() < 0 ? "%1" : "+%1").arg(geom.x())
+ QString(geom.y() < 0 ? "%1" : "+%1").arg(geom.y()), false);
static QTimer *doubleclickhint = nullptr;
if (!doubleclickhint) {
doubleclickhint = new QTimer(this);
doubleclickhint->setInterval(2000);
doubleclickhint->setSingleShot(true);
connect(doubleclickhint, &QTimer::timeout, [=]() {
if (cropRubberBand && cropRubberBand->isVisible())
setFeedback(tr("Doubleclick to crop, right click to abort"), 10000);
});
}
doubleclickhint->start();
}