SOL9 Sample: ContrastAndBrightnessAdjuster
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1 Screenshot
2 Source code
/*
* ContrastAndBrightnessAdjuster.cpp
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*/
//2017/03/30
// Please see "http://docs.opencv.org/2.4/doc/tutorials/core/basic_linear_transform/basic_linear_transform.html#basic-linear-transform"
// Changing the contrast and brightness of an image!
//2017/12/01 Added save, saveAs methods to MainView.
#define _CONSOLE_
#include <sol/ModuleFileName.h>
#include <sol/DropFiles.h>
#include <sol/LabeledTrackBar.h>
#include <sol/FileDialog.h>
#include <sol/Profile.h>
#include <sol/StringT.h>
#include <sol/opencv/OpenCVApplicationView.h>
#include <sol/opencv/OpenCVNamedWindow.h>
#include <sol/opencv/OpenCVNamedWindow.h>
namespace SOL {
class MainView :public OpenCVApplicationView {
private:
////////////////////////////////////////////////////////////////////////////////////////
//Inner classes start.
class OriginalImageView :public OpenCVNamedWindow {
private:
cv::Mat originalImage;
void display()
{
show(originalImage);
}
public:
OriginalImageView(View* parent, const char* name, Args& args)
:OpenCVNamedWindow(parent, name, args)
{
try {
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
originalImage = readImage(filename, imageLoadingFlag);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~OriginalImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag=CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
refresh();
} catch (Exception& ex) {
caught(ex);
}
}
};
class ConvertedImageView :public OpenCVNamedWindow {
private:
cv::Mat originalImage;
cv::Mat convertedImage;
void display()
{
show(convertedImage);
}
public:
ConvertedImageView(View* parent, const char* name, Args& args)
:OpenCVNamedWindow(parent, name, args)
{
try {
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
loadImage(filename, imageLoadingFlag);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~ConvertedImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag=CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
convertedImage = originalImage;
refresh();
} catch(Exception& ex) {
caught(ex);
}
}
void convertImage(int alpha, int beta)
{
cv::Mat newImage = cv::Mat::zeros(originalImage.size(), originalImage.type() );
originalImage.convertTo( newImage, -1, (float)alpha, beta );
convertedImage = newImage;
refresh();
}
void writeImage(const char* filename)
{
OpenCVNamedWindow::writeImage(filename, convertedImage);
}
};
//Inner classes end.
////////////////////////////////////////////////////////////////////////////////////////
StringT<char> imageFile;
StringT<char> savedImageFile;
SmartPtr<OriginalImageView> originalImage;
SmartPtr<ConvertedImageView> convertedImage;
int contrast;
SmartPtr<LabeledTrackBar> contrastTrackBar;
int brightness;
SmartPtr<LabeledTrackBar> brightnessTrackBar;
FileDialog filedlg;
void updateCaption()
{
char caption[MAX_PATH];
sprintf_s(caption, CountOf(caption), "%s - %s",
(const char*)imageFile,
getAppName());
setText(caption);
}
//Horizontal Scroll event by TrackBars
void trackBarScrolled(Action& action)
{
contrast = contrastTrackBar ->getPosition();
brightness = brightnessTrackBar->getPosition();
convertedImage -> convertImage(contrast, brightness);
}
void resize(int w, int h)
{
if (originalImage && convertedImage &&
contrastTrackBar && brightnessTrackBar) {
originalImage -> reshape(2, 2, (w-160)/2-1, h-4);
convertedImage -> reshape((w-160)/2+1, 2, (w-160)/2-1, h-4);
contrastTrackBar -> reshape(w-155 + 10, 40, 140, 60);
brightnessTrackBar -> reshape(w-155 + 10, 140, 140, 60);
}
}
void openFile(const char* filename)
{
try {
originalImage -> loadImage(filename);
convertedImage -> loadImage(filename);
const char* fname = strrchr(filename, '\\');
if (fname) {
fname++;
}
imageFile = fname;
convertedImage -> convertImage(contrast, brightness);
updateCaption();
} catch (Exception& ex) {
caught(ex);
}
}
void dropFiles(Action& action)
{
char fileName[MAX_PATH] = { 0 };
DropFiles drop((HDROP)action.getWParam());
//fileName[0] = ZERO;
int num = drop.queryFile(0, fileName, CountOf(fileName));
if(num > 0) {
if (filedlg.isImageFileName(fileName)) {
openFile(fileName);
bringUp();
} else {
bringUp(); //Activate and raise this view
showErrorDialog("Invalid image filename", fileName, MB_OK);
}
}
}
void confirm(Action& action)
{
int rc = MessageBox(NULL, "Are you sure to close this window?", "Confirmation",
MB_OKCANCEL|MB_ICONEXCLAMATION);
if (rc == IDOK) {
exit(action);
}
}
public:
MainView(OpenCVApplication& applet, const char* name, Args& args)
:OpenCVApplicationView(applet, name, args)
{
imageFile = "..\\images\\flower6.jpg";
int imageLoadingFlag = CV_LOAD_IMAGE_COLOR;
try {
Args ar;
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
originalImage = new OriginalImageView(this, "cvwindow1", ar);
originalImage -> addCallback(XmNdropCallback, this,
(Callback)&MainView::dropFiles, NULL);
ar.reset();
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
convertedImage = new ConvertedImageView(this, "cvwindow2", ar);
contrast = 1;
brightness = 10;
ar.reset();
ar.set(XmNminimum, 1);
ar.set(XmNmaximum, 3);
ar.set(XmNposition, contrast);
ar.set(XmNdisplayOddValue, false);
contrastTrackBar = new LabeledTrackBar(this, "Contrast", ar);
contrastTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::trackBarScrolled, NULL);
ar.reset();
ar.set(XmNminimum, 0);
ar.set(XmNmaximum, 100);
ar.set(XmNposition, brightness);
ar.set(XmNdisplayOddValue, false);
brightnessTrackBar = new LabeledTrackBar(this, "Brightness", ar);
brightnessTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::trackBarScrolled, NULL);
addCallback(XmNmenuCallback, IDM_EXIT, this,
(Callback)&MainView::confirm, NULL);
convertedImage->convertImage(contrast, brightness);
ar.reset();
ar.set(XmNfilter, FileDialog::getImageFilesFilter());
filedlg.create(this, "OpenFile", ar);
updateCaption();
} catch (Exception& ex) {
caught(ex);
}
}
~MainView()
{
}
void open(Action& action)
{
Args ar;
char dir[MAX_PATH] = { 0 };
if (restoreFileFolder(dir, CountOf(dir))) {
ar.set(XmNdirectory, dir);
filedlg.setValues(ar);
}
try {
if(filedlg.open()) {
const char* filename = filedlg.getFileName();
saveFileFolder(filename);
openFile(filename);
}
} catch (Exception& ex) {
caught(ex);
}
}
//2017/12/01
void save(Action& action)
{
try {
if (!savedImageFile.isEmpty()) {
//Write converted image into the filename.
convertedImage->writeImage(savedImageFile);
} else {
saveAs(action);
}
} catch (Exception& ex) {
caught(ex);
}
}
void saveAs(Action& action)
{
Args ar;
char dir[MAX_PATH] = { 0 };
if (restoreFileFolder(dir, CountOf(dir))) {
ar.set(XmNdirectory, dir);
filedlg.setValues(ar);
}
try {
if(filedlg.save()) {
const char* filename = filedlg.getFileName();
saveFileFolder(filename);
//Write converted image into the filename.
convertedImage->writeImage(filename);
savedImageFile = filename;
}
} catch (Exception& ex) {
caught(ex);
}
}
};
}
//
void main(int argc, char** argv)
{
try {
ModuleFileName module(argv[0]);
const char* name = module.getAppName();
OpenCVApplication applet(name, argc, argv);
Args args;
args.set(XmNwidth, 860);
args.set(XmNheight, 360);
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (SOL::Exception& ex) {
caught(ex);
}
}
Last modified: 2 Dec. 2017
Copyright (c) 2017 Antillia.com ALL RIGHTS RESERVED.