wxWidgets/contrib/include/wx/fl/newbmpbtn.h

/////////////////////////////////////////////////////////////////////////////
// Name:        newbmpbtn.h
// Purpose:     wxNewBitmapButton header.
// Author:      Aleksandras Gluchovas
// Modified by:
// Created:     ??/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Aleksandras Gluchovas
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef __NEWBMPBTN_G__
#define __NEWBMPBTN_G__

#ifdef __GNUG__
    #pragma interface "newbmpbtn.h"
#endif

#include "wx/button.h"
#include "wx/string.h"

// button label-text alignment types

#define NB_ALIGN_TEXT_RIGHT  0
#define NB_ALIGN_TEXT_BOTTOM 1
#define NB_NO_TEXT           2
#define NB_NO_IMAGE          3

// classes declared in this header file

class wxNewBitmapButton;
class wxBorderLessBitmapButton;

/*
This is an alternative class to wxBitmapButton. It is used
in the implementation of dynamic toolbars.
*/

class wxNewBitmapButton: public wxPanel
{
    DECLARE_DYNAMIC_CLASS(wxNewBitmapButton)

protected:

    friend class wxNewBitmapButtonSerializer;

    int      mTextToLabelGap;
    int      mMarginX;
    int      mMarginY;
    int      mTextAlignment;
    bool     mIsSticky;
    bool     mIsFlat;

    wxString mLabelText;
    wxString mImageFileName;
    wxBitmapType mImageFileType;

    wxBitmap mDepressedBmp; // source image for rendering
                            // labels for particular state

    wxBitmap mFocusedBmp;   // may not be always present -
                            // only if mHasFocusedBmp is TRUE

    wxBitmap* mpDepressedImg;
    wxBitmap* mpPressedImg;
    wxBitmap* mpDisabledImg;
    wxBitmap* mpFocusedImg;

    // button state variables;
    bool      mDragStarted;
    bool      mIsPressed;
    bool      mIsInFocus;
    bool      mPrevPressedState;
    bool      mPrevInFocusState;

    bool      mHasFocusedBmp;

    // type of event which is fired upon depression of this button
    int       mFiredEventType;

    // pens for drawing decorations (borders)
    wxPen     mBlackPen;
    wxPen     mDarkPen;
    wxPen     mGrayPen;
    wxPen     mLightPen;

    bool      mIsCreated;
    int       mSizeIsSet;

protected:

        // Internal function for destroying labels.
    void DestroyLabels();

        // Returns the label that matches the current button state.
    virtual wxBitmap* GetStateLabel();

        // Draws shading on the button.
    virtual void DrawShade( int outerLevel,
                            wxDC&  dc,
                            wxPen& upperLeftSidePen,
                            wxPen& lowerRightSidePen );

        // Returns TRUE if the given point is in the window.
    bool IsInWindow( int x, int y );

public:

        // Constructor.
    wxNewBitmapButton( const wxBitmap& labelBitmap = wxNullBitmap,
                       const wxString& labelText   = "",
                       int   alignText             = NB_ALIGN_TEXT_BOTTOM,
                       bool  isFlat                = TRUE,
                       // this is the default type of fired events
                       int firedEventType = wxEVT_COMMAND_MENU_SELECTED,
                       int marginX        = 2,
                       int marginY        = 2,
                       int textToLabelGap = 2,
                       bool isSticky      = FALSE
                     );

        // Use this constructor if buttons have to be persistant
    wxNewBitmapButton( const wxString& bitmapFileName,
                           const wxBitmapType     bitmapFileType = wxBITMAP_TYPE_BMP,
                           const wxString& labelText      = "",
                           int alignText                  = NB_ALIGN_TEXT_BOTTOM,
                           bool  isFlat                   = TRUE,
                           // this is the default type of fired events
                           int firedEventType = wxEVT_COMMAND_MENU_SELECTED,
                           int marginX        = 2,
                           int marginY        = 2,
                           int textToLabelGap = 2,
                           bool isSticky      = FALSE
                             );

        // Destructor.
    ~wxNewBitmapButton();

        // This function should be called after Create. It renders the labels, having
        // reloaded the button image if necessary.
    virtual void Reshape();

        // Sets the label and optionally label text.
    virtual void SetLabel(const wxBitmap& labelBitmap, const wxString& labelText = "" );

        // Sets the text alignment and margins.
    virtual void SetAlignments( int alignText = NB_ALIGN_TEXT_BOTTOM,
                                int marginX        = 2,
                                int marginY        = 2,
                                int textToLabelGap = 2);

        // Draws the decorations.
    virtual void DrawDecorations( wxDC& dc );

        // Draws the label.
    virtual void DrawLabel( wxDC& dc );

        // Renders the label image.
    virtual void RenderLabelImage( wxBitmap*& destBmp, wxBitmap* srcBmp, 
                                   bool isEnabled = TRUE,
                                   bool isPressed = FALSE);

        // Renders label images.
    virtual void RenderLabelImages();

        // Renders label images.
    virtual void RenderAllLabelImages();

        // Responds to a left mouse button down event.
    void OnLButtonDown( wxMouseEvent& event );

        // Responds to a left mouse button up event.
    void OnLButtonUp( wxMouseEvent& event );

        // Responds to a mouse move event.
    void OnMouseMove( wxMouseEvent& event );

        // Responds to a size event.
    void OnSize( wxSizeEvent& event );

        // Responds to a paint event.
    void OnPaint( wxPaintEvent& event );

        // Responds to an erase background event.
    void OnEraseBackground( wxEraseEvent& event );

        // Responds to a kill focus event.
    void OnKillFocus( wxFocusEvent& event );

    DECLARE_EVENT_TABLE()
};

#endif /* __NEWBMPBTN_G__ */