a few win32 makefiles

[wxWidgets.git] / utils / framelayout / src / newbmpbtn.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        No names yet.
// Purpose:     Contrib. demo
// Author:      Aleksandras Gluchovas
// Modified by:
// Created:     ??/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Aleksandras Gluchovas
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "newbmpbtn.cpp"
#pragma interface "newbmpbtn.cpp"
#endif

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

/*
#ifdef __BORLANDC__
#pragma hdrstop
#endif
*/

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include "newbmpbtn.h"
#include "wx/utils.h"     // import wxMin,wxMax macros

///////////// button-label rendering helpers //////////////////

static int* create_array( int width, int height, int fill = 0 )
{
	int* array = new int[width*height];

	int len = width*height;
	for( int i = 0; i != len; ++i ) array[i] = fill;

	return array;
}

#define GET_ELEM(array,x,y) (array[width*(y)+(x)])

#define MIN_COLOR_DIFF 10

#define IS_IN_ARRAY(x,y) ( (x) < width && (y) < height && (x) >= 0 && (y) >= 0 )

#define GET_RED(col)    col        & 0xFF  
#define GET_GREEN(col) (col >> 8)  & 0xFF 	  
#define GET_BLUE(col)  (col >> 16) & 0xFF 

#define MAKE_INT_COLOR(red,green,blue) (     (red)                      | \
                                         ( ( (green) << 8 ) & 0xFF00  ) | \
										 ( ( (blue)  << 16) & 0xFF0000) \
                                       )   

#define IS_GREATER(col1,col2) ( ( (GET_RED(col1)  ) > (GET_RED(col2)  ) + MIN_COLOR_DIFF ) && \
                                ( (GET_GREEN(col1)) > (GET_GREEN(col2)) + MIN_COLOR_DIFF ) &&  \
								( (GET_BLUE(col1) ) > (GET_BLUE(col2) ) + MIN_COLOR_DIFF ) 	   \
							  )

#define MASK_BG	   0
#define MASK_DARK  1
#define MASK_LIGHT 2

// helper function, used internally

static void gray_out_pixmap( int* src, int* dest, int width, int height )
{
	// assuming the pixels along the edges are of the background color
	int bgCol = GET_ELEM(src,0,0);

	int x = 0;
	int y = 1;

	do
	{
		int cur       = GET_ELEM(src,x,y);

		int r = GET_RED(cur);
		int g = GET_GREEN(cur);
		int b = GET_BLUE(cur);

		if ( IS_IN_ARRAY(x-1,y-1) )
		{
			int upperElem = GET_ELEM(src,x-1,y-1);

			// if the upper element is lighter than current
			if ( IS_GREATER(upperElem,cur) )
			{
				GET_ELEM(dest,x,y) = MASK_DARK;
			}
			else
			// if the current element is ligher than the upper
			if ( IS_GREATER(cur,upperElem) )
			{
				GET_ELEM(dest,x,y) = MASK_LIGHT;
			}
			else
			{
				if ( GET_ELEM(dest,x-1,y-1) == MASK_LIGHT )
					
					GET_ELEM(dest,x,y) = MASK_BG;

				if ( GET_ELEM(dest,x-1,y-1 ) == MASK_DARK )

					GET_ELEM(dest,x,y) = MASK_DARK;
				else
					GET_ELEM(dest,x,y) = MASK_BG;
			}
		}

		// go zig-zag

		if ( IS_IN_ARRAY(x+1,y-1) ) 
		{
			++x;--y;
		}
		else
		{
			while( IS_IN_ARRAY(x-1,y+1) ) 
			{
				--x;++y;
			}

			if ( IS_IN_ARRAY(x,y+1) )
			{
					++y; continue;
			}
			else
			{
				if ( IS_IN_ARRAY(x+1,y) )
				{
					++x; continue;
				}
				else break;
			}
		}

	} while(1);
}

// alg. for making the image look "grayed" (e.g. disabled button)
// NOTE:: used GetPixel(), which is Windows-Only!

void greay_out_image_on_dc( wxDC& dc, int width, int height )
{
	// assuming the pixels along the edges are of the background color
	wxColour bgCol;
	dc.GetPixel( 0, 0, &bgCol );

	wxPen darkPen ( wxColour(128,128,128),1, wxSOLID );
	wxPen lightPen( wxColour(255,255,255),1, wxSOLID );
	wxPen bgPen   ( bgCol,                1, wxSOLID );

	int* src  = create_array( width, height, MASK_BG );
	int* dest = create_array( width, height, MASK_BG );

	int y = 0;
	for( y = 0; y != height; ++y )

		for( int x = 0; x != width; ++x )
		{
			wxColour col;
			dc.GetPixel( x,y, &col );

			int r = col.Red(), 
				g = col.Green(), 
				b = col.Blue();

			int o = MAKE_INT_COLOR( r,g,b );

			GET_ELEM(src,x,y) = MAKE_INT_COLOR( col.Red(), col.Green(), col.Blue() );
		}

	gray_out_pixmap( src, dest, width, height );

	for( y = 0; y != height; ++y )

		for( int x = 0; x != width; ++x )
		{
			int mask = GET_ELEM(dest,x,y);

			switch (mask)
			{
				case MASK_BG    : { dc.SetPen( bgPen ); 
					                dc.DrawPoint( x,y ); break;
							      }
				case MASK_DARK  : { dc.SetPen( darkPen ); 
					                dc.DrawPoint( x,y ); break;
							      }
				case MASK_LIGHT : { dc.SetPen( lightPen ); 
					                dc.DrawPoint( x,y ); break;
							      }
				default : break;
			}
		}

	delete [] src;
	delete [] dest;
}

///////////////////////////////

/***** Impelementation for class wxNewBitmapButton *****/

IMPLEMENT_DYNAMIC_CLASS(wxNewBitmapButton, wxPanel)

BEGIN_EVENT_TABLE( wxNewBitmapButton, wxPanel )

	EVT_LEFT_DOWN( wxNewBitmapButton::OnLButtonDown )
	EVT_LEFT_UP  ( wxNewBitmapButton::OnLButtonUp   )
	EVT_MOTION   ( wxNewBitmapButton::OnMouseMove   )

	EVT_SIZE ( wxNewBitmapButton::OnSize  )
	EVT_PAINT( wxNewBitmapButton::OnPaint )

	//EVT_KILL_FOCUS( wxNewBitmapButton::OnKillFocus )

	EVT_ERASE_BACKGROUND( wxNewBitmapButton::OnEraseBackground )

END_EVENT_TABLE()

wxNewBitmapButton::wxNewBitmapButton( const wxBitmap& labelBitmap, 
									  const wxString& labelText,
									  int  alignText,
									  bool isFlat,
									  int  firedEventType, 
									  int  marginX,
									  int  marginY,
									  int  textToLabelGap,
									  bool isSticky)
	: 	mpDepressedImg( NULL ),
		mpPressedImg  ( NULL ),
		mpDisabledImg ( NULL ),
		mpFocusedImg  ( NULL ),

		mMarginX( marginX ),
		mMarginY( marginY ),
		mTextAlignment( alignText ),
		mIsFlat( isFlat ),

		mIsPressed       ( FALSE ),
		mDragStarted     ( FALSE ),
		mPrevPressedState( FALSE ),
		mTextToLabelGap  ( textToLabelGap ),

		mBlackPen( wxColour(  0,  0,  0), 1, wxSOLID ),
		mDarkPen ( wxColour(128,128,128), 1, wxSOLID ),
		mGrayPen ( wxColour(192,192,192),
		           1, wxSOLID ),
		mLightPen( wxColour(255,255,255), 1, wxSOLID ),

		mFiredEventType( firedEventType ),
		mIsSticky( isSticky ),
		mIsCreated( FALSE ),
		mSizeIsSet( FALSE ),

		mHasFocusedBmp( FALSE ),
		mIsInFocus( FALSE ),

		mDepressedBmp( labelBitmap ),
		mLabelText( labelText ),
		mImageFileType( -1 )
{
}

wxNewBitmapButton::wxNewBitmapButton( const wxString& bitmapFileName,
									  const int       bitmapFileType,
									  const wxString& labelText,
									  int  alignText,
									  bool isFlat,
									  int  firedEventType, 
									  int  marginX,
									  int  marginY,
									  int  textToLabelGap,
									  bool isSticky)

	: 	mpDepressedImg( NULL ),
		mpPressedImg  ( NULL ),
		mpDisabledImg ( NULL ),
		mpFocusedImg  ( NULL ),

		mMarginX( 2 ),
		mMarginY( 2 ),
		mTextAlignment( alignText ),
		mIsFlat( isFlat ),

		mIsPressed       ( FALSE ),
		mDragStarted     ( FALSE ),
		mPrevPressedState( FALSE ),
		mTextToLabelGap  ( 2 ),

		mBlackPen( wxColour(  0,  0,  0), 1, wxSOLID ),
		mDarkPen ( wxColour(128,128,128), 1, wxSOLID ),
		mGrayPen ( wxColour(192,192,192),
		           1, wxSOLID ),
		mLightPen( wxColour(255,255,255), 1, wxSOLID ),

		mFiredEventType( wxEVT_COMMAND_MENU_SELECTED ),
		mIsSticky( FALSE ),
		mIsCreated( FALSE ),
		mSizeIsSet( FALSE ),

		mHasFocusedBmp( FALSE ),
		mIsInFocus( FALSE ),

		mLabelText( labelText ),
		mImageFileName( bitmapFileName ),
		mImageFileType( bitmapFileType )
{
	//mDepressedBmp.LoadFile( bitmapFileName, bitmapFileType );
}

wxNewBitmapButton::~wxNewBitmapButton(void) 
{
	DestroyLabels();
}

void wxNewBitmapButton::DrawShade( int outerLevel,
								   wxDC&  dc,
							       wxPen& upperLeftSidePen,
								   wxPen& lowerRightSidePen )
{
	wxBitmap* pBmp = GetStateLabel();

	int x = mMarginX - (outerLevel + 1);
	int y = mMarginY - (outerLevel + 1);

	int height = pBmp->GetHeight() + (outerLevel + 1)*2 - 1;
	int width  = pBmp->GetWidth()  + (outerLevel + 1)*2 - 1;

	dc.SetPen( upperLeftSidePen );
	dc.DrawLine( x,y, x + width, y  );
	dc.DrawLine( x,y, x, y + height );

	dc.SetPen( lowerRightSidePen );
	dc.DrawLine( x + width, y, x + width, y + height + 1  );
	dc.DrawLine( x, y + height, x + width, y + height );
}

void wxNewBitmapButton::DestroyLabels()
{
	if ( mpDepressedImg ) delete mpDepressedImg;
	if ( mpPressedImg   ) delete mpPressedImg;
	if ( mpDisabledImg  ) delete mpDisabledImg;
	if ( mpFocusedImg   ) delete mpFocusedImg;

	mpDepressedImg = NULL;
	mpPressedImg   = NULL;
	mpDisabledImg  = NULL;
	mpFocusedImg   = NULL;
}

wxBitmap* wxNewBitmapButton::GetStateLabel()
{
	if ( IsEnabled() )
	{
		if ( mIsPressed )
		{
			return mpPressedImg;
		}
		else
		{
			if ( mIsInFocus )
			{
				if ( mHasFocusedBmp )

					return mpFocusedImg;
				else
					return mpDepressedImg;
			}
			else
				return mpDepressedImg;
		}
	}
	else
		return mpDisabledImg;
}

void wxNewBitmapButton::RenderLabelImage( wxBitmap*& destBmp, wxBitmap* srcBmp,
										  bool isEnabled, bool isPressed )
{
	if ( destBmp != 0 ) return;

	// render lables on-demand

	wxMemoryDC srcDc;
	srcDc.SelectObject( *srcBmp );
	wxFont fnt( 9, wxDECORATIVE , wxNORMAL, wxNORMAL );

	bool hasText = ( mTextAlignment != NB_NO_TEXT ) &&
		           ( mLabelText.length() != 0 );

	bool hasImage = (mTextAlignment != NB_NO_IMAGE);

	wxSize destDim;
	wxPoint txtPos;
	wxPoint imgPos;

	if ( hasText )
	{
		long txtWidth, txtHeight;

		srcDc.SetFont( fnt );
		srcDc.GetTextExtent( mLabelText, &txtWidth, &txtHeight );

		if ( mTextAlignment == NB_ALIGN_TEXT_RIGHT )
		{
			destDim.x = srcBmp->GetWidth() + 2*mTextToLabelGap + txtWidth;

			destDim.y = 
				wxMax( srcBmp->GetHeight(), txtHeight );

			txtPos.x = srcBmp->GetWidth() + mTextToLabelGap;
			txtPos.y = (destDim.y - txtHeight)/2;
			imgPos.x = 0;
			imgPos.y = (destDim.y - srcBmp->GetHeight())/2;
		}
		else
		if ( mTextAlignment == NB_ALIGN_TEXT_BOTTOM )
		{
			destDim.x = 
				wxMax( srcBmp->GetWidth(), txtWidth );

			destDim.y = srcBmp->GetHeight() + mTextToLabelGap + txtHeight;

			txtPos.x = (destDim.x - txtWidth)/2;
			txtPos.y = srcBmp->GetHeight() + mTextToLabelGap;
			imgPos.x = (destDim.x - srcBmp->GetWidth())/2;
			imgPos.y = 0;
		}
		else wxASSERT(0);// unsupported alignment type
	}
	else
	{
		imgPos.x = 0;
		imgPos.y = 0;
		destDim.x = srcBmp->GetWidth();
		destDim.y = srcBmp->GetHeight();
	}

	destBmp = new wxBitmap( int(destDim.x), int(destDim.y) );

	wxMemoryDC destDc;
	destDc.SelectObject( *destBmp );

	// FOR NOW:: hard-coded label background
	wxBrush grayBrush( wxColour(192,192,192), wxSOLID );
	wxPen   nullPen( wxColour(0,0,0), 1, wxTRANSPARENT );

	destDc.SetBrush( grayBrush );
	destDc.SetPen( nullPen );

	destDc.DrawRectangle( 0,0, destDim.x+1, destDim.y+1 );

	if ( isPressed )
	{
		++imgPos.x; ++imgPos.y;
		++txtPos.x; ++txtPos.y;
	}

	if ( hasImage )
	{
		destDc.Blit( imgPos.x, imgPos.y, 
					 srcBmp->GetWidth()+1,
					 srcBmp->GetHeight()+1,
					 &srcDc, 0,0, wxCOPY );
	}

	if ( hasText )
	{
		wxWindow* pTopWnd = this;

		do
		{
			wxWindow* pParent = pTopWnd->GetParent();

			if ( pParent == 0 ) break;

			pTopWnd = pParent;
		} while(1);

		destDc.SetFont( fnt );

		// FOR NOW:: hard-coded text colors
		destDc.SetTextForeground( wxColour(  0,  0,  0) );
		destDc.SetTextBackground( wxColour(192,192,192) );

		destDc.DrawText( mLabelText, txtPos.x, txtPos.y );
	}

	if ( !isEnabled )
	
		greay_out_image_on_dc( destDc, destDim.x, destDim.y );

	// adjust button size to fit the new dimensions of the label
	if ( !mSizeIsSet && 0 )
	{
		mSizeIsSet = TRUE; 
		SetSize( -1,-1, 
				 destBmp->GetWidth()  + mMarginX*2,
				 destBmp->GetHeight() + mMarginY*2, 0 
			);
	}
}

void wxNewBitmapButton::RenderLabelImages()
{
	if ( !mIsCreated ) return;

	if ( !IsEnabled() )
	{
		RenderLabelImage( mpDisabledImg, &mDepressedBmp, FALSE );
	}
	else

	if ( mIsPressed ) 

		RenderLabelImage( mpPressedImg,   &mDepressedBmp, TRUE, TRUE );
	else
	{
		if ( mIsInFocus )
		{
			if ( mHasFocusedBmp )
			
				RenderLabelImage( mpFocusedImg, &mFocusedBmp, TRUE, FALSE );
			else
				RenderLabelImage( mpDepressedImg, &mDepressedBmp, TRUE, FALSE );
		}
		else
			RenderLabelImage( mpDepressedImg, &mDepressedBmp, TRUE, FALSE );
	}
}

void wxNewBitmapButton::DrawDecorations( wxDC& dc )
{
	if ( mIsFlat )
	{
		DrawShade( 1, dc, mGrayPen,  mGrayPen  );
		
		if ( mIsInFocus )
		{
			if ( mIsPressed )
		
				DrawShade( 0, dc, mDarkPen,  mLightPen  );
			else
				DrawShade( 0, dc, mLightPen,  mDarkPen  );
		}
		else
			DrawShade( 0, dc, mGrayPen,  mGrayPen  );
	}
	else
	{
		if ( mIsPressed )
		{
			DrawShade( 0, dc, mDarkPen,  mGrayPen  );
			DrawShade( 1, dc, mBlackPen, mLightPen );
		}
		else
		{
			DrawShade( 0, dc, mGrayPen,  mDarkPen  );
			DrawShade( 1, dc, mLightPen, mBlackPen );
		}
	}
}

void wxNewBitmapButton::SetLabel(const wxBitmap& labelBitmap, 
								 const wxString& labelText )
{
	DestroyLabels();

	mLabelText    = labelText;
	mDepressedBmp = labelBitmap;

	RenderLabelImages();
}

void wxNewBitmapButton::SetAlignments( int alignText,
								       int marginX,
									   int marginY,
									   int textToLabelGap)
{
	DestroyLabels();

	mMarginX        = marginX;
	mMarginY        = marginY;
	mTextAlignment  = alignText;
	mTextToLabelGap = textToLabelGap;

	RenderLabelImages();
}

// event handlers

void wxNewBitmapButton::OnLButtonDown( wxMouseEvent& event )
{
	mPrevPressedState = FALSE;   
	mDragStarted      = TRUE;
	mIsPressed        = TRUE;
	Refresh();

	if ( !mIsInFocus )
	
			CaptureMouse();
}

void wxNewBitmapButton::OnLButtonUp( wxMouseEvent& event )
{
	if ( !mDragStarted ) return;

	mDragStarted = FALSE;
	mIsPressed   = FALSE;
	mIsInFocus   = FALSE;
	Refresh();

	ReleaseMouse();

	if ( IsInWindow( event.m_x, event.m_y ) ) 
	{
		// fire event, if mouse was released
		// within the bounds of button
		wxCommandEvent cmd( mFiredEventType, GetId() );
		GetParent()->ProcessEvent( cmd );
	}
}

bool wxNewBitmapButton::IsInWindow( int x, int y )
{
	int width, height;
	GetSize( &width, &height );

	return ( x >= 0 && y >= 0 &&
			 x < width &&
			 y < height );
}

void wxNewBitmapButton::OnMouseMove( wxMouseEvent& event )
{
	if ( !mIsInFocus && IsInWindow( event.m_x, event.m_y ) )
	{
		if ( !mDragStarted )
			CaptureMouse();

		mIsInFocus = TRUE;
	}
	else
	if ( mIsInFocus && !IsInWindow( event.m_x, event.m_y ) )
	{
		mIsInFocus = FALSE;

		if ( !mDragStarted )
			ReleaseMouse();
	}

	if ( mDragStarted )
	{
		if ( IsInWindow( event.m_x, event.m_y ) )

			mIsPressed = TRUE;
		else
			mIsPressed = FALSE;

		if ( mIsPressed != mPrevPressedState )
			
			Refresh();

		mPrevPressedState = mIsPressed;
	}

	// FOR NOW::
	Refresh();
}

void wxNewBitmapButton::OnSize( wxSizeEvent& event )
{
		//Reshape();
}

void wxNewBitmapButton::Reshape( )
{
	bool wasCreated = mIsCreated;
	mIsCreated = TRUE;

	if ( !wasCreated )
	{
		// in the case of loading button from stream, check if we
		// have non-empty image-file name, load if possible 

		if ( mImageFileName != "" )
		{
			mDepressedBmp.LoadFile( mImageFileName, mImageFileType );

			//wxMessageBox("Image Loaded!!!");
		}

		RenderLabelImages();

		wxBitmap* pCurImg = GetStateLabel();

		int w = pCurImg->GetWidth(),
			h = pCurImg->GetHeight();

		SetSize( 0,0, w + mMarginX*2, h + mMarginY*2 , 0 );
	}
}

void wxNewBitmapButton::DrawLabel( wxDC& dc )
{
	wxBitmap* pCurBmp = GetStateLabel();

	if ( pCurBmp == NULL )
	{
		wxSizeEvent evt;
		OnSize( evt ); // fake it up!

		RenderLabelImages();
		pCurBmp = GetStateLabel();
	}

	wxMemoryDC mdc;
	mdc.SelectObject( *pCurBmp );

	dc.Blit( mMarginX, mMarginY, 
			 pCurBmp->GetWidth(),
			 pCurBmp->GetHeight(),
			 &mdc, 0,0, wxCOPY 
		   );

	mdc.SelectObject( wxNullBitmap );
}

void wxNewBitmapButton::OnPaint( wxPaintEvent& event )
{
	wxPaintDC dc(this);

	// first, make sure images for current state are prepared
	RenderLabelImages();

	DrawLabel( dc );

	DrawDecorations( dc );
}

void wxNewBitmapButton::OnEraseBackground( wxEraseEvent& event )
{
	// do nothing
}

void wxNewBitmapButton::OnKillFocus( wxFocusEvent& event )
{
	// useless

	wxMessageBox("kill-focus for button!");
}