Differential D25645 Diff 71062 kstars/fitsviewer/fitstab.cpp

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kstars/fitsviewer/fitstab.cpp

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23#include "ksnotification.h" 23​#include "ksnotification.h"
24#include "kstars.h" 24​#include "kstars.h"
25#include "Options.h" 25​#include "Options.h"
26#include "ui_fitsheaderdialog.h" 26​#include "ui_fitsheaderdialog.h"
27#include "ui_statform.h" 27​#include "ui_statform.h"
28 28​
29#include <KMessageBox> 29​#include <KMessageBox>
30#include <QtConcurrent> 30​#include <QtConcurrent>
31​#include <QIcon>
32​
33​
34​namespace {
35​const char kAutoToolTip[] = "Automatically find stretch parameters";
36​const char kStretchOffToolTip[] = "Stretch the image";
37​const char kStretchOnToolTip[] = "Disable stretching of the image.";
38​} // namespace
31 39​
32FITSTab::FITSTab(FITSViewer *parent) : QWidget(parent) 40​FITSTab::FITSTab(FITSViewer *parent) : QWidget(parent)
33{ 41​{
34 viewer = parent; 42​ viewer = parent;
35 undoStack = new QUndoStack(this); 43​ undoStack = new QUndoStack(this);
36 undoStack->setUndoLimit(10); 44​ undoStack->setUndoLimit(10);
37 undoStack->clear(); 45​ undoStack->clear();
38 connect(undoStack, SIGNAL(cleanChanged(bool)), this, SLOT(modifyFITSState(bool))); 46​ connect(undoStack, SIGNAL(cleanChanged(bool)), this, SLOT(modifyFITSState(bool)));
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93 101​
94void FITSTab::clearRecentFITS() 102​void FITSTab::clearRecentFITS()
95{ 103​{
96 disconnect(recentImages, &QListWidget::currentRowChanged, this, &FITSTab::selectRecentFITS); 104​ disconnect(recentImages, &QListWidget::currentRowChanged, this, &FITSTab::selectRecentFITS);
97 recentImages->clear(); 105​ recentImages->clear();
98 connect(recentImages, &QListWidget::currentRowChanged, this, &FITSTab::selectRecentFITS); 106​ connect(recentImages, &QListWidget::currentRowChanged, this, &FITSTab::selectRecentFITS);
99} 107​}
100 108​
109​namespace {
110​
111​// Sets the text value in the slider's value display, and if adjustSlider is true,
112​// moves the slider to the correct position.
113​void setSlider(QSlider *slider, QLabel *label, float value, float maxValue, bool adjustSlider)
114​{
115​ if (adjustSlider)
116​ slider->setValue(static_cast<int>(value * 10000 / maxValue));
117​ QString valStr = QString("%1").arg(static_cast<double>(value), 5, 'f', 4);
118​ label->setText(valStr);
119​}
120​
121​// Adds the following to a horizontal layout (left to right): a vertical line,
122​// a label with the slider's name, a slider, and a text field to display the slider's value.
123​void setupStretchSlider(QSlider *slider, QLabel *label, QLabel *val, int fontSize,
124​ const QString& name, QHBoxLayout *layout)
125​{
126​ QFrame* line = new QFrame();
127​ line->setFrameShape(QFrame::VLine);
128​ line->setFrameShadow(QFrame::Sunken);
129​ layout->addWidget(line);
130​ QFont font = label->font();
131​ font.setPointSize(fontSize);
132​
133​ label->setText(name);
134​ label->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
135​ label->setFont(font);
136​ layout->addWidget(label);
137​ slider->setMinimum(0);
138​ slider->setMaximum(10000);
139​ slider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
140​ layout->addWidget(slider);
141​ val->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
142​ val->setFont(font);
143​ layout->addWidget(val);
144​}
145​
146​// Adds a button with the icon and tooltip to the layout.
147​void setupStretchButton(QPushButton *button, const QString &iconName, const QString &tip, QHBoxLayout *layout)
148​{
149​ button->setIcon(QIcon::fromTheme(iconName));
150​ button->setIconSize(QSize(22, 22));
151​ button->setToolTip(tip);
152​ button->setCheckable(true);
153​ button->setChecked(true);
154​ button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
155​ layout->addWidget(button);
156​}
157​
158​} // namespace
159​
160​// Updates all the widgets in the stretch area to display the view's stretch parameters.
161​void FITSTab::setStretchUIValues(bool adjustSliders)
162​{
163​ StretchParams1Channel params = view->getStretchParams().grey_red;
164​ setSlider(shadowsSlider.get(), shadowsVal.get(), params.shadows, maxShadows, adjustSliders);
165​ setSlider(midtonesSlider.get(), midtonesVal.get(), params.midtones, maxMidtones, adjustSliders);
166​ setSlider(highlightsSlider.get(), highlightsVal.get(), params.highlights, maxHighlights, adjustSliders);
167​
168​
169​ bool stretchActive = view->isImageStretched();
170​ if (stretchActive)
171​ {
172​ stretchButton->setChecked(true);
173​ stretchButton->setToolTip(kStretchOnToolTip);
174​ }
175​ else
176​ {
177​ stretchButton->setChecked(false);
178​ stretchButton->setToolTip(kStretchOffToolTip);
179​ }
180​
181​ // Only activeate the auto button if stretching is on and auto-stretching is not set.
182​ if (stretchActive && !view->getAutoStretch())
183​ {
184​ autoButton->setEnabled(true);
185​ autoButton->setIcon(QIcon::fromTheme("tools-wizard"));
186​ autoButton->setIconSize(QSize(22, 22));
187​ autoButton->setToolTip(kAutoToolTip);
188​ }
189​ else
190​ {
191​ autoButton->setEnabled(false);
192​ autoButton->setIcon(QIcon());
193​ autoButton->setIconSize(QSize(22, 22));
194​ autoButton->setToolTip("");
195​ }
196​ autoButton->setChecked(view->getAutoStretch());
197​
198​ // Disable most of the UI if stretching is not active.
199​ shadowsSlider->setEnabled(stretchActive);
200​ shadowsVal->setEnabled(stretchActive);
201​ shadowsLabel->setEnabled(stretchActive);
202​ midtonesSlider->setEnabled(stretchActive);
203​ midtonesVal->setEnabled(stretchActive);
204​ midtonesLabel->setEnabled(stretchActive);
205​ highlightsSlider->setEnabled(stretchActive);
206​ highlightsVal->setEnabled(stretchActive);
207​ highlightsLabel->setEnabled(stretchActive);
208​}
209​
210​// Adjusts the maxShadows value so that we have room to adjust the slider.
211​void FITSTab::rescaleShadows()
212​{
213​ if (!view) return;
214​ StretchParams1Channel params = view->getStretchParams().grey_red;
215​ maxShadows = std::max(0.002f, std::min(1.0f, params.shadows * 2.0f));
216​ setStretchUIValues(true);
217​}
218​
219​// Adjusts the maxMidtones value so that we have room to adjust the slider.
220​void FITSTab::rescaleMidtones()
221​{
222​ if (!view) return;
223​ StretchParams1Channel params = view->getStretchParams().grey_red;
224​ maxMidtones = std::max(.002f, std::min(1.0f, params.midtones * 2.0f));
225​ setStretchUIValues(true);
226​}
227​
228​QHBoxLayout* FITSTab::setupStretchBar()
229​{
230​ constexpr int fontSize = 12;
231​
232​ QHBoxLayout *stretchBarLayout = new QHBoxLayout();
233​
234​ stretchButton.reset(new QPushButton());
235​ setupStretchButton(stretchButton.get(), "transform-move", kStretchOffToolTip, stretchBarLayout);
236​
237​ // Shadows
238​ shadowsLabel.reset(new QLabel());
239​ shadowsVal.reset(new QLabel());
240​ shadowsSlider.reset(new QSlider(Qt::Horizontal, this));
241​ setupStretchSlider(shadowsSlider.get(), shadowsLabel.get(), shadowsVal.get(), fontSize, "Shadows", stretchBarLayout);
242​
243​ // Midtones
244​ midtonesLabel.reset(new QLabel());
245​ midtonesVal.reset(new QLabel());
246​ midtonesSlider.reset(new QSlider(Qt::Horizontal, this));
247​ setupStretchSlider(midtonesSlider.get(), midtonesLabel.get(), midtonesVal.get(), fontSize, "Midtones", stretchBarLayout);
248​
249​ // Highlights
250​ highlightsLabel.reset(new QLabel());
251​ highlightsVal.reset(new QLabel());
252​ highlightsSlider.reset(new QSlider(Qt::Horizontal, this));
253​ setupStretchSlider(highlightsSlider.get(), highlightsLabel.get(), highlightsVal.get(), fontSize, "Hightlights", stretchBarLayout);
254​
255​ // Separator
256​ QFrame* line4 = new QFrame();
257​ line4->setFrameShape(QFrame::VLine);
258​ line4->setFrameShadow(QFrame::Sunken);
259​ stretchBarLayout->addWidget(line4);
260​
261​ autoButton.reset(new QPushButton());
262​ setupStretchButton(autoButton.get(), "tools-wizard", kAutoToolTip, stretchBarLayout);
263​
264​ connect(stretchButton.get(), &QPushButton::clicked, [=]() {
265​ // This will toggle whether we're currently stretching.
266​ view->setStretch(!view->isImageStretched());
267​ });
268​
269​ // Make rough displays for the slider movement.
270​ connect(shadowsSlider.get(), &QSlider::sliderMoved, [=](int value) {
271​ StretchParams params = view->getStretchParams();
272​ params.grey_red.shadows = this->maxShadows * value / 10000.0f;
273​ view->setSampling(4);
274​ view->setStretchParams(params);
275​ view->setSampling(1);
276​ });
277​ connect(midtonesSlider.get(), &QSlider::sliderMoved, [=](int value) {
278​ StretchParams params = view->getStretchParams();
279​ params.grey_red.midtones = this->maxMidtones * value / 10000.0f;
280​ view->setSampling(4);
281​ view->setStretchParams(params);
282​ view->setSampling(1);
283​ });
284​ connect(highlightsSlider.get(), &QSlider::sliderMoved, [=](int value) {
285​ StretchParams params = view->getStretchParams();
286​ params.grey_red.highlights = this->maxHighlights * value / 10000.0f;
287​ view->setSampling(4);
288​ view->setStretchParams(params);
289​ view->setSampling(1);
290​ });
291​
292​ // Make a final full-res display when the slider is released.
293​ connect(shadowsSlider.get(), &QSlider::sliderReleased, [=]() {
294​ if (!view) return;
295​ rescaleShadows();
296​ StretchParams params = view->getStretchParams();
297​ view->setStretchParams(params);
298​ });
299​ connect(midtonesSlider.get(), &QSlider::sliderReleased, [=]() {
300​ if (!view) return;
301​ rescaleMidtones();
302​ StretchParams params = view->getStretchParams();
303​ view->setStretchParams(params);
304​ });
305​ connect(highlightsSlider.get(), &QSlider::sliderReleased, [=]() {
306​ if (!view) return;
307​ StretchParams params = view->getStretchParams();
308​ view->setStretchParams(params);
309​ });
310​
311​ connect(autoButton.get(), &QPushButton::clicked, [=]() {
312​ // If we're not currently using automatic stretch parameters, turn that on.
313​ // If we're already using automatic parameters, don't do anything.
314​ // User can just move the sliders to take manual control.
315​ if (!view->getAutoStretch())
316​ view->setAutoStretchParams();
317​ else
318​ KMessageBox::information(this, "You are already using automatic stretching. To manually stretch, drag a slider.");
319​ setStretchUIValues(false);
320​ });
321​
322​ // This is mostly useful right at the start, when the image is displayed without any user interaction.
323​ // Check for slider-in-use, as we don't wont to rescale while the user is active.
324​ connect(view.get(), &FITSView::newStatus, [=](const QString &ignored) {
325​ Q_UNUSED(ignored)
326​ bool slidersInUse = shadowsSlider->isSliderDown() || midtonesSlider->isSliderDown() ||
327​ highlightsSlider->isSliderDown();
328​ if (!slidersInUse)
329​ {
330​ rescaleShadows();
331​ rescaleMidtones();
332​ }
333​ setStretchUIValues(!slidersInUse);
334​ });
335​
336​ return stretchBarLayout;
337​}
338​
101bool FITSTab::setupView(FITSMode mode, FITSScale filter) 339​bool FITSTab::setupView(FITSMode mode, FITSScale filter)
102{ 340​{
103 if (view.get() == nullptr) 341​ if (view.get() == nullptr)
104 { 342​ {
105 view.reset(new FITSView(this, mode, filter)); 343​ view.reset(new FITSView(this, mode, filter));
106 view->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); 344​ view->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
107 QVBoxLayout *vlayout = new QVBoxLayout(); 345​ QVBoxLayout *vlayout = new QVBoxLayout();
108 346​
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149 fitsSplitter->addWidget(scrollFitsPanel); 387​ fitsSplitter->addWidget(scrollFitsPanel);
150 fitsSplitter->addWidget(view.get()); 388​ fitsSplitter->addWidget(view.get());
151 389​
152 390​
153 //This code allows the fitsTools to start in a closed state 391​ //This code allows the fitsTools to start in a closed state
154 fitsSplitter->setSizes(QList<int>() << 0 << view->width() ); 392​ fitsSplitter->setSizes(QList<int>() << 0 << view->width() );
155 393​
156 vlayout->addWidget(fitsSplitter); 394​ vlayout->addWidget(fitsSplitter);
395​ vlayout->addLayout(setupStretchBar());
157 396​
158 connect(fitsSplitter, &QSplitter::splitterMoved, histogram, &FITSHistogram::resizePlot); 397​ connect(fitsSplitter, &QSplitter::splitterMoved, histogram, &FITSHistogram::resizePlot);
159 398​
160 ​
161 setLayout(vlayout); 399​ setLayout(vlayout);
162 connect(view.get(), &FITSView::newStatus, this, &FITSTab::newStatus); 400​ connect(view.get(), &FITSView::newStatus, this, &FITSTab::newStatus);
163 connect(view.get(), &FITSView::debayerToggled, this, &FITSTab::debayerToggled); 401​ connect(view.get(), &FITSView::debayerToggled, this, &FITSTab::debayerToggled);
164 402​
165 // On Failure to load 403​ // On Failure to load
166 connect(view.get(), &FITSView::failed, this, &FITSTab::failed); 404​ connect(view.get(), &FITSView::failed, this, &FITSTab::failed);
167 405​
168 return true; 406​ return true;
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