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251 lines
7.1 KiB
251 lines
7.1 KiB
/***************************************************************************
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kmagview.h - description
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-------------------
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begin : Mon Feb 12 23:45:41 EST 2001
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copyright : (C) 2001-2003 by Sarang Lakare
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email : sarang#users.sf.net
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copyright : (C) 2003-2005 by Olaf Schmidt
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email : ojschmidt@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; version 2 of the License *
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* *
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***************************************************************************/
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#ifndef KMagZoomView_h_
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#define KMagZoomView_h_
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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// include files for TQt
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#include <tqwidget.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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#include <tqtimer.h>
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#include <tqscrollview.h>
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#include <tqstringlist.h>
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#include <tqrect.h>
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#include <tqcursor.h>
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//class KMagSelRect;
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#include "kmagselrect.h"
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/**
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* The KMagZoomView class provides the view widget for the KmagApp instance.
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*
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* @author Olaf Schmikt <ojschmidt@kde.org>
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* @author Sarang Lakare <sarang#users.sourceforge.net>
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*/
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class KMagZoomView : public TQScrollView
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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/// Constructor for the main view
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KMagZoomView(TQWidget *parent = 0, const char *name=0);
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/// Destructor for the main view
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~KMagZoomView();
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/// Toggles the refreshing of the window
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void toggleRefresh();
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/// Returns the currently displayed zoomed view
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TQPixmap getPixmap();
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/// Returns the state of the refresh switch
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bool getRefreshStatus() const { return m_refreshSwitch; };
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/// Returns teh status of followMouse
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bool getFollowMouse() const { return m_followMouse; };
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/// Get the status of "show rect. always"
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bool getShowSelRect() const { return (m_selRect.getAlwaysVisible()); };
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/// Get the coordinates of the selection rectangle
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TQRect getSelRectPos() const { return (TQRect&)(m_selRect); };
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/// Returns the current state of show mouse
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unsigned int getShowMouseType() const;
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/// Returns the different ways of showing mouse cursor
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TQStringList getShowMouseStringList() const;
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/// Returns the status of "fit to window" option
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bool getFitToWindow() const { return (m_fitToWindow); };
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public slots:
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/// Sets zoom to the given value
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void setZoom(float zoom = 0.0);
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/// Sets the rotation to the given value
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void setRotation(int rotation = 0);
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/// Sets whether the magnified image is shown inverted
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void setInvertation(bool invert);
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/// Grabs a frame from the given portion of the display
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void grabFrame();
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/// Update the mouse cursor in the zoom view
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void updateMouseView();
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/// Set grab-window-follows-mouse mode
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void followMouse(bool follow = true);
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/// Shows/Hides the selection marker
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void showSelRect(bool show=true);
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/// Set the position of the selection region to the given pos
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void setSelRectPos(const TQRect & rect);
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/// Set the refresh rate in fps (frames per second)
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void setRefreshRate(float fps);
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/// Shows/Hides mouse cursor in the zoomed view
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bool showMouse(unsigned int type);
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/// Set the status of "fit to window" option
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void setFitToWindow (bool fit=true);
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/// Fits the zoom view to the zoom view window
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void fitToWindow();
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signals:
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void contextMenu(TQPoint pos);
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protected:
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/// Called when the widget is hidden
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void hideEvent( TQHideEvent * e);
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/// Called when the widget is shown
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void showEvent( TQShowEvent * e);
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/// Called when the widget has been resized
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void resizeEvent(TQResizeEvent *e);
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/// Called when the widget is to be repainted
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void drawContents ( TQPainter * p, int clipx, int clipy, int clipw, int cliph );
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/// This function calculates the mouse position relative to the image
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TQPoint calcMousePos(bool updateMousePos=true);
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/// This function draws the mouse cursor
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void paintMouseCursor(TQPaintDevice *dev, TQPoint mousePos);
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/// Called when mouse click is detected
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void mousePressEvent (TQMouseEvent *e);
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/// Called when mouse is moved
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void mouseMoveEvent(TQMouseEvent *e);
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/// Mouse button release event handler
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void mouseReleaseEvent(TQMouseEvent *e);
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/// Mouse button release event handler
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void keyPressEvent(TQKeyEvent *e);
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/// Mouse button release event handler
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void keyReleaseEvent(TQKeyEvent *e);
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/// Catch context menu events
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void contextMenuEvent (TQContextMenuEvent *e);
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/// Mouse button release event handler
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void focusOutEvent(TQFocusEvent *e);
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/// Returns the rectangle where the pixmap will be drawn
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TQRect pixmapRect();
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private:
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/// Stores the pixmap grabbed from the screen - to be zoomed
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TQPixmap m_grabbedPixmap;
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/// The selected rectangle which is to be grabbed
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KMagSelRect m_selRect;
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/// Grabs a window when the timer goes off
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TQTimer m_grabTimer;
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/// Updates the mouse view
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TQTimer m_mouseViewTimer;
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/// Zoom matrix
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TQWMatrix m_zoomMatrix;
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/// Inverted zoom matrix
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TQWMatrix m_invertedMatrix;
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/// Saves the mouse position when a button is clicked and b4 the cursor is moved to new position
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TQPoint m_oldMousePos;
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/// Saves the center of the grab window
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TQPoint m_oldCenter;
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/// Possible modes for the mouse to be in
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enum KMagMouseMode {
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Normal,
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StartSelect,
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ResizeSelection,
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MoveSelection,
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GrabSelection
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};
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/// The current mode which the mouse is
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KMagMouseMode m_mouseMode;
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/// stores the state of the Ctrl key
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bool m_ctrlKeyPressed;
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/// stores the state of the Shift key
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bool m_shiftKeyPressed;
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/// Store the more recent updated cursor position
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TQPoint m_latestCursorPos;
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/// Various ways of showing mouse cursor
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TQStringList m_showMouseTypes;
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// configuration options:
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/// To follow mouse motion or not when no key is pressed
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bool m_followMouse;
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/// State of refreshing - on or off
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bool m_refreshSwitch;
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/// Stores the state of the refresh switch on hide event
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bool m_refreshSwitchStateOnHide;
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/// Show mouse cursor type - 0 : do not show, non zero: show
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unsigned int m_showMouse;
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/// Frames per second for refresh
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unsigned int m_fps;
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/// Stores the amount to zoom the pixmap
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float m_zoom;
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/// Stores the degrees to rotate the pixmap
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int m_rotation;
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/// Whether the magnified image is to be shown inverted
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int m_invert;
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/// Fit the zoom view to the zoom window
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bool m_fitToWindow;
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/// Update the magnification matrix
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void updateMatrix();
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};
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#endif // KMagZoomView_h_
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