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path: root/support/dktools/WxdkdrawControlEvents.cpt
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%%	options
copyright owner	=	Dirk Krause
copyright year	=	2019-xxxx
SPDX-License-Identifier:	BSD-3-Clause


# vim: set ai sw=4 ts=4 :

%%	module


#include "wxdkdraw.h"

#ifndef	WXDKDRAWAPPH_INCLUDED
#include "WxdkdrawApp.h"
#endif
#ifndef	WXDKDRAWFRAME_H_INCLUDED
#include "WxdkdrawFrame.h"
#endif



$!trace-include



#if	wxCHECK_VERSION(3,0,0)
wxBEGIN_EVENT_TABLE(WxdkdrawFrame::Control,wxControl)
#else
BEGIN_EVENT_TABLE(WxdkdrawFrame::Control,wxControl)
#endif
	EVT_ERASE_BACKGROUND(WxdkdrawFrame::Control::OnErase)
	EVT_PAINT(WxdkdrawFrame::Control::OnPaint)
	EVT_SIZE(WxdkdrawFrame::Control::OnSize)
	EVT_ENTER_WINDOW(WxdkdrawFrame::Control::OnMouseEnter)
	EVT_LEAVE_WINDOW(WxdkdrawFrame::Control::OnMouseLeave)
	EVT_MOTION(WxdkdrawFrame::Control::OnMouseMove)
	EVT_LEFT_DOWN(WxdkdrawFrame::Control::OnLeftMouseButtonDown)
	EVT_MIDDLE_DOWN(WxdkdrawFrame::Control::OnMiddleMouseButtonDown)
	EVT_RIGHT_DOWN(WxdkdrawFrame::Control::OnRightMouseButtonDown)
	EVT_MOUSEWHEEL(WxdkdrawFrame::Control::OnMouseWheel)
#if	wxCHECK_VERSION(3,0,0)
wxEND_EVENT_TABLE()
#else
END_EVENT_TABLE()
#endif


#if	wxCHECK_VERSION(3,0,0)
wxIMPLEMENT_DYNAMIC_CLASS(WxdkdrawFrame::Control,wxControl);
#else
IMPLEMENT_DYNAMIC_CLASS(WxdkdrawFrame::Control,wxControl)
#endif



wxChar const WxdkdrawFrame::Control::ms_controlname[] =
{ wxT("WxdkdrawControl") } ;



bool
WxdkdrawFrame::Control::CanHandleEvents(void)
{
	bool		back	= false;
	if (m_bCanAllocate && (NULL != m_pParent)) {
		if (NULL != m_pParent->m_pDrw) {
			back = m_pParent->m_bActive;
		}
	}
	return back;
}



void
WxdkdrawFrame::Control::OnErase(wxEraseEvent & WXUNUSED(event))
{
	$? "+ OnErase"
	/*
		Intentionally empty.
		We must overwrite the method to avoid background erasing,
		but we do nothing here as we do not want to erase something.
	*/
	$? "- OnErase"
}



void
WxdkdrawFrame::Control::OnPaint(wxPaintEvent & WXUNUSED(event))
{
	$? "+ OnPaint"
	m_szDrawco = GetClientSize();
	if (CanHandleEvents()) {
		/*
			Calculate coordinates conversion coefficients
		*/
		CalculateConversionCoefficients();
		/*
			Destroy old bitmaps if size does not match
		*/
		if (NULL != m_pB3) {
			wxSize bmsz = m_pB3->GetSize();
			if (m_szDrawco != bmsz) { delete m_pB3; m_pB3 = NULL; }
		}
		if (NULL != m_pB2) {
			wxSize bmsz = m_pB2->GetSize();
			if (m_szDrawco != bmsz) { delete m_pB2; m_pB2 = NULL; }
		}
		if (NULL != m_pB1) {
			wxSize bmsz = m_pB1->GetSize();
			if (m_szDrawco != bmsz) { delete m_pB1; m_pB1 = NULL; }
		}
		/*	Allocate new bitmaps
		*/
		if (NULL == m_pB1) {
			m_pB1 = new wxBitmap(m_szDrawco.GetWidth(), m_szDrawco.GetHeight());
			if (NULL != m_pB1) {
				wxdobj_drw_require_redraw(m_pParent->m_pDrw,WXD_REFRESH_GRID);
			}
		}
		if (NULL == m_pB2) {
			m_pB2 = new wxBitmap(m_szDrawco.GetWidth(), m_szDrawco.GetHeight());
			if (NULL != m_pB2) {
				wxdobj_drw_require_redraw(
					m_pParent->m_pDrw,WXD_REFRESH_DRAWING
				);
			}
		}
		if (NULL == m_pB3) {
			m_pB3 = new wxBitmap(m_szDrawco.GetWidth(), m_szDrawco.GetHeight());
			if (NULL != m_pB3) {
				wxdobj_drw_require_redraw(m_pParent->m_pDrw,WXD_REFRESH_MARKUP);
			}
		}
		/*	Draw either buffered or unbuffered
		*/
		if ((NULL != m_pB1) && (NULL != m_pB2) && (NULL != m_pB3)) {
			/*
				All bitmaps available, buffered drawing
			*/
			wxPaintDC	paintDC(this);
			int			rl;
			
			rl = wxdobj_drw_get_required_redraw_level(m_pParent->m_pDrw);
			if (WXD_REFRESH_GRID <= rl) {			$? ". draw grid"
				wxMemoryDC	mdc;
				mdc.SelectObject(*m_pB1);
				PaintOperation0(mdc);
				wxGraphicsContext *gc = wxGraphicsContext::Create(mdc);
				if (NULL != gc) {
					PaintOperation1(gc);
					delete gc;
				}
				mdc.SelectObject(wxNullBitmap);
			}
			if (WXD_REFRESH_DRAWING <= rl) {		$? ". draw elements"
				wxMemoryDC	mdc;
				mdc.SelectObject(*m_pB2);
				mdc.DrawBitmap(*m_pB1, 0, 0, false);
				wxGraphicsContext *gc = wxGraphicsContext::Create(mdc);
				if (NULL != gc) {
					PaintOperation2(gc);
					delete gc;
				}
				mdc.SelectObject(wxNullBitmap);
			}
			if (WXD_REFRESH_MARKUP <= rl) {			$? ". draw markup"
				wxMemoryDC	mdc;
				mdc.SelectObject(*m_pB3);
				mdc.DrawBitmap(*m_pB2, 0, 0, false);
				wxGraphicsContext *gc = wxGraphicsContext::Create(mdc);
				if (NULL != gc) {
					PaintOperation3(gc);
					delete gc;
				}
				mdc.SelectObject(wxNullBitmap);
			}										$? ". use cached bitmap"
			paintDC.DrawBitmap(*m_pB3, 0, 0, false);
		}
		else {
			/*
				At least one bitmap not allocated, unbuffered drawing
			*/
			wxBufferedPaintDC	 paintDC(this);
			wxGraphicsContext	*gc = wxGraphicsContext::Create(paintDC);
			if (NULL != gc) {
				PaintOperation0(paintDC);
				PaintOperation1(gc);
				PaintOperation2(gc);
				PaintOperation3(gc);
				delete gc;
			}
		}
		/*	Reset the redraw level to mark that the produced
			bitmap 3 (if any) can be re-used without drawing operations.
		*/
		wxdobj_drw_reset_required_redraw_level(m_pParent->m_pDrw);
	}
	else {
		/*
			Draw control not yet or no longer ready for normal use.
			Simply draw placeholder for draw control.
		*/
		wxBufferedPaintDC	paintDC(this);
		PaintOperation0(paintDC);
	}
	$? "- OnPaint"
}



void
WxdkdrawFrame::Control::OnSize(wxSizeEvent & WXUNUSED(event))
{
	int		oldw;
	int		oldh;
	bool	bEnlarged	=	false;
	$? "+ OnSize"
	if (CanHandleEvents()) {
		oldw = m_szDrawco.GetWidth();
		oldh = m_szDrawco.GetHeight();
		m_szDrawco = GetClientSize();
		if (m_szDrawco.GetWidth() > oldw) {
			bEnlarged = true;
		}
		if (m_szDrawco.GetHeight() > oldh) {
			bEnlarged = true;
		}
		if (bEnlarged && (0 != m_pParent->m_iv[IVI_C_COR_POSITION])) {
			m_pParent->CorrectCenterPointIfNecessary();
		}
		m_pParent->AdjustScrollbars();
		wxdobj_drw_require_redraw(m_pParent->m_pDrw, WXD_REFRESH_GRID);
		Refresh();
		m_pParent->Update();
	}
	$? "- OnSize"
}



void
WxdkdrawFrame::Control::OnMouseEnter(wxMouseEvent & event)
{
	$? "+ OnMouseEnter"
	if (CanHandleEvents()) {
		m_pParent->ControlMouseEnter(event);
	}
#ifndef	__WXGTK__
	SetFocus();
#endif
	$? "- OnMouseEnter"
}



void
WxdkdrawFrame::Control::OnMouseLeave(wxMouseEvent & event)
{
	$? "+ OnMouseLeave"
	if (CanHandleEvents()) {
		m_pParent->ControlMouseLeave(event);
	}
	$? "- OnMouseLeave"
}



void
WxdkdrawFrame::Control::OnMouseMove(wxMouseEvent & event)
{
	$? "+ OnMouseMove"
	if (CanHandleEvents()) {
		m_pParent->ControlMouseMove(event);
	}
	$? "- OnMouseMove"
}



void
WxdkdrawFrame::Control::OnLeftMouseButtonDown(wxMouseEvent & event)
{
	$? "+ OnLeftMouseButtonDown"
	if (CanHandleEvents()) {
		m_pParent->ControlLeftMouseButton(event);
	}
#ifndef	__WXGTK__
	SetFocus();
#endif
#if	0
	event.Skip();
#endif
	$? "- OnLeftMouseButtonDown"
}



void
WxdkdrawFrame::Control::OnRightMouseButtonDown(wxMouseEvent & event)
{
	$? "+ OnRightMouseButtonDown"
	if (CanHandleEvents()) {
		m_pParent->ControlRightMouseButton(event);
	}
#ifndef	__WXGTK__
	SetFocus();
#endif
#if	0
	event.Skip();
#endif
	$? "- OnRightMouseButtonDown"
}



void
WxdkdrawFrame::Control::OnMiddleMouseButtonDown(wxMouseEvent & event)
{
	$? "+ OnMiddleMouseButtonDown"
	if (CanHandleEvents()) {
		m_pParent->ControlMiddleMouseButton(event);
	}
#ifndef	__WXGTK__
	SetFocus();
#endif
#if	0
	event.Skip();
#endif
	$? "- OnMiddleMouseButtonDown"
}



void
WxdkdrawFrame::Control::OnMouseWheel(wxMouseEvent & event)
{
	$? "+ OnMouseWheel"
	if (CanHandleEvents()) {
		m_pParent->ControlMouseWheel(event);
	}
	$? "- OnMouseWheel"
}





/* vim: set ai sw=4 ts=4 : */