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ScreenShot Class Reference

#include <screenshot.h>

Collaboration diagram for ScreenShot:


Public Slots
void	shoot ()
void	save ()
void	target (int)
void	delaychanged (int)
void	fileSelect ()
void	fileChanged ()
void	timeout ()
void	areaSelected (const QRect &)
void	areaSelect ()
Public Member Functions
	ScreenShot (QWidget parent=0, const char name=0, WFlags fl=0)
Private Types
enum	Mode { screen, window, area }
Private Member Functions
void	getWindow ()
void	displayShot ()
Private Attributes
Mode	mode
int	delay
QTimer *	timer
QPixmap	shotPixmap
QImage	shotImage
bool	haveImage
QString	workDir
QString	fileName
QString	baseName
int	shotCount
QRect	areaRect
AreaGrab *	selectArea

Detailed Description

This is the main class, derived from a class created with QTs designer. Subclassing in this way is my preferred method to work with GUIs, as this keeps the GUI stuff neatly separated from the stuff that does the actual work.

Member Enumeration Documentation

enum ScreenShot::Mode [private]

Enumeration values:

screen

window

area

Constructor & Destructor Documentation

ScreenShot::ScreenShot ( QWidget * parent = 0,

const char * name = 0,

WFlags fl = 0

)

The c'tor hasn't got much to do except set up some class variables. All the layouting of widgets and the connection of signals and slots is already been done in ScreenShotUI.

Member Function Documentation

void ScreenShot::areaSelect ( ) [slot]

A necessary slot to make shure this widget is hidden when area selection starts.

void ScreenShot::areaSelected ( const QRect & r ) [slot]

This slot is called when area selection is completed. The selectArea widget is deleted to clean up, it has already hidden itself at this point.

void ScreenShot::delaychanged ( int n ) [slot]

This slot is used whenever a different delay is selected.

void ScreenShot::displayShot ( ) [private]

Like the name says, this is where the shot image is shown.

void ScreenShot::fileChanged ( ) [slot]

This slot is called when the user bothers to change the filename by typing on the keyboard, which is signified by a return pressed signal.

void ScreenShot::fileSelect ( ) [slot]

This slot receives the click on the fileToolButton. It is used to pop up a file dialog and let the user select a file ( and directory ) name. The default directory initially is the user's home directory, after this it will be the selected directory. The selected file name, if valid, will always be converted to have the extension ".png".

void ScreenShot::getWindow ( ) [private]

getWindow() grabs the currently focussed window, if it is completely visible. If the window is partially obscured, a region the size of the window is grabbed anyway. I see this as a feature, so don't ask me to do anything about it.
This is the only place generic X11 functions are used.

void ScreenShot::save ( ) [slot]

This slot is triggered by clicking the QPushButton labeled with the same name. It saves the generated image at the chosen location.