MainWindow Class Reference

Inheritance diagram for MainWindow:

Public Member Functions
	MainWindow (QWidget *parent=0)
	Constructor. More...
void	GrayScale (QImage &)
	Function that applies a greyscale filter in the edited image. It works by turning each pixel into the color grey. More...
void	VerticalFlip (QImage &)
	Function that applies a vertical flip to the edited image. It works by putting the pixel from the original image in the heigth-1-j position of the edited image. More...
void	HorizontalFlip (QImage &)
	Function that applies a horizontal flip to the edited image. It works by putting the pixel from the original image in the width-1-i position of the edited image. More...
void	ThresholdFilter (QImage &, QImage &, unsigned int, bool)
	Function that applies a theshold filter to the edited image. It works by creating a black and white image where the color of the new pixel is white or black depending on a threshold value and the average of the colors of the pixel of the original image. More...
	MainWindow (QWidget *parent=0)
void	GrayScale (QImage &)
void	VerticalFlip (QImage &)
void	HorizontalFlip (QImage &)
void	ThresholdFilter (QImage &, QImage &, unsigned int, bool)

Private Slots
void	on_actionLoad_Image_triggered ()
	Invokes function on_btnLoadImage_clicked() More...
void	on_actionSave_Image_triggered ()
	Invokes function on_btnSaveImage_clicked()
void	on_actionClose_Window_triggered ()
void	on_actionInvert_Threshold_Colors_triggered ()
	Invokes function on_btnInvertThreshold_clicked()
void	on_actionFlip_Image_Horizontally_triggered ()
	Invokes function on_btnFlipImageHorizontally_clicked()
void	on_actionFlip_Image_Vertically_triggered ()
	Invokes function on_btnFlipImageVertically_clicked()
void	on_actionApply_Grey_Scale_Filter_triggered ()
	Invokes function on_btnGreyScaleFilter_clicked()
void	on_actionRevert_Edited_Image_to_Original_triggered ()
	Invokes function on_btnRevertImage_clicked()
void	on_actionInstructions_triggered ()
	To display the instructions.
void	applyThresholdFilter ()
	To apply the threshold filter.
void	instructions ()
	To display the instructions.
void	on_thresholdSlider_sliderReleased ()
	To apply the threshold filter and load the edited image to the GUI when the GUI slider is moved.
void	on_btnLoadImage_clicked ()
	To load an image to the GUI when the load image option is selected.
void	on_btnSaveImage_clicked ()
	To save an image to the file system when the save image option is selected.
void	on_chboxThreshold_clicked ()
	To apply the threshold filter and load the edited image to the GUI.
void	on_btnInvertThreshold_clicked ()
	To apply the threshold filter and load the edited image to the GUI when the threshold color is inverted.
void	on_btnFlipImageHorizontally_clicked ()
	To call the horizontal flip image filter.
void	on_btnFlipImageVertically_clicked ()
	To call the vertical flip image filter.
void	on_btnGreyScaleFilter_clicked ()
	To call the Gray Scale image filter.
void	on_btnRevertImage_clicked ()
	To reset the edited image to the original image.
void	on_actionLoad_Image_triggered ()
void	on_actionSave_Image_triggered ()
void	on_actionClose_Window_triggered ()
void	on_actionInvert_Threshold_Colors_triggered ()
void	on_actionFlip_Image_Horizontally_triggered ()
void	on_actionFlip_Image_Vertically_triggered ()
void	on_actionApply_Grey_Scale_Filter_triggered ()
void	on_actionRevert_Edited_Image_to_Original_triggered ()
void	on_actionInstructions_triggered ()
void	applyThresholdFilter ()
void	instructions ()
void	on_thresholdSlider_sliderReleased ()
void	on_btnLoadImage_clicked ()
void	on_btnSaveImage_clicked ()
void	on_chboxThreshold_clicked ()
void	on_btnInvertThreshold_clicked ()
void	on_btnFlipImageHorizontally_clicked ()
void	on_btnFlipImageVertically_clicked ()
void	on_btnGreyScaleFilter_clicked ()
void	on_btnRevertImage_clicked ()

Private Attributes
Ui::MainWindow *	ui
QImage	originalImage
QImage	editedImage
bool	invertColor

Constructor & Destructor Documentation

MainWindow::MainWindow ( QWidget *  parent = 0 )

explicit

Constructor.

Destructor.

KEYBOARD SHORTCUTS Loads a image with cmd + o Carga una imagen con cmd + o

Saves a image with cmd + s Guarda una imagen con cmd + s

Closes window with cmd + w Cierra la ventana con cmd + w

Inverts threshold color with cmd + t Invierte el color umbral con cmd + t

Flips horizontally a image with cmd + f Rota horizontalmente una imagen con cmd + f

Flips vertically a image with cmd + v Rota verticalmente una imagen con cmd + v

Applies greyscale filter to a image with cmd + g Aplica el filtro de tonos grises a una imagen con cmd + g

Resets an edited image to the orignal one to a image with cmd + r Devuelve la imagen editada a su estado original con cmd + r

Display the instructions with cmd + i Despliega las instrucciones con cmd + i

Member Function Documentation

void MainWindow::GrayScale

(

QImage &

editedImage

)

Function that applies a greyscale filter in the edited image. It works by turning each pixel into the color grey.

Function that applies a greyscale filter to the edited image. It works by turning each pixel into the color grey. For this we use two for loops to access the pixels of the edited image.

Parameters

originalImage	Reference to the original image (no filter)
editedImage	Reference to the destination image with the filter applied.

void MainWindow::HorizontalFlip

(

QImage &

editedImage

)

Function that applies a horizontal flip to the edited image. It works by putting the pixel from the original image in the width-1-i position of the edited image.

Function that applies a horizontal flip to the edited image For this we use two for loops to access the pixels of the images. In the first loop we go through the x axis and in the second we go through the y axis and inside of it we put the pixel from the original image in the width-1-i position of the edited image.

Parameters

originalImage	Reference to the original image (no filter)
editedImage	Reference to the destination image with the filter applied.

void MainWindow::on_actionLoad_Image_triggered ( )

privateslot

Invokes function on_btnLoadImage_clicked()

ACTION FUNCTIONS

void MainWindow::ThresholdFilter	(	QImage &	originalImage,
		QImage &	editedImage,
		unsigned int	threshold,
		bool	color
	)

Function that applies a theshold filter to the edited image. It works by creating a black and white image where the color of the new pixel is white or black depending on a threshold value and the average of the colors of the pixel of the original image.

Parameters

originalImage	Reference to the original image (no filter)
editedImage	Reference to the destination image with the filter applied.
threshold	Integer value that serves as a black or white color threshold
color	boolean value to select which color white or black if the color average is under or over the threshold.

Function that applies a threshold filter to the edited image. For this we use two for loops to access the pixels of the images. In the first loop we go through the x axis and in the second we go through the y axis.

void MainWindow::VerticalFlip

(

QImage &

editedImage

)

Function that applies a vertical flip to the edited image. It works by putting the pixel from the original image in the heigth-1-j position of the edited image.

Function that applies a vertical flip to the edited image. For this we use two for loops to access the pixels of the images. In the first loop we go through the x axis and in the second we go through the y axis and inside of it we put the pixel from the original image in the heigth-1-j position of the edited image.

Parameters

originalImage	Reference to the original image (no filter)
editedImage	Reference to the destination image with the filter applied.

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The documentation for this class was generated from the following files:

• bk/mainwindow.h
• bk/mainwindow.cpp
• filter.cpp