src/html/htmlcell.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        htmlcell.cpp
// Purpose:     wxHtmlCell - basic element of HTML output
// Author:      Vaclav Slavik
// RCS-ID:      $Id$
// Copyright:   (c) 1999 Vaclav Slavik
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#endif

#include "wx/wxprec.h"

#include "wx/defs.h"

#if wxUSE_HTML && wxUSE_STREAMS

#ifdef __BORDLANDC__
#pragma hdrstop
#endif

#ifndef WXPRECOMP
    #include "wx/brush.h"
    #include "wx/colour.h"
    #include "wx/dc.h"
#endif

#include "wx/html/htmlcell.h"
#include "wx/html/htmlwin.h"
#include <stdlib.h>


//-----------------------------------------------------------------------------
// wxHtmlCell
//-----------------------------------------------------------------------------

wxHtmlCell::wxHtmlCell() : wxObject()
{
    m_Next = NULL;
    m_Parent = NULL;
    m_Width = m_Height = m_Descent = 0;
    m_CanLiveOnPagebreak = TRUE;
    m_Link = NULL;
}

wxHtmlCell::~wxHtmlCell()
{
    delete m_Link;
}


void wxHtmlCell::OnMouseClick(wxWindow *parent, int x, int y,
                              const wxMouseEvent& event)
{
    wxHtmlLinkInfo *lnk = GetLink(x, y);
    if (lnk != NULL)
    {
        wxHtmlLinkInfo lnk2(*lnk);
        lnk2.SetEvent(&event);
        lnk2.SetHtmlCell(this);

        // note : this cast is legal because parent is *always* wxHtmlWindow
        wxStaticCast(parent, wxHtmlWindow)->OnLinkClicked(lnk2);
    }
}


bool wxHtmlCell::AdjustPagebreak(int *pagebreak) const
{
    if ((!m_CanLiveOnPagebreak) &&
                m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak)
    {
        *pagebreak = m_PosY;
        return TRUE;
    }

    return FALSE;
}


void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
{
    if (m_Link) delete m_Link;
    m_Link = NULL;
    if (link.GetHref() != wxEmptyString)
        m_Link = new wxHtmlLinkInfo(link);
}


void wxHtmlCell::Layout(int WXUNUSED(w))
{
    SetPos(0, 0);
}


void wxHtmlCell::GetHorizontalConstraints(int *left, int *right) const
{
    if (left)
        *left = m_PosX;
    if (right)
        *right = m_PosX + m_Width;
}


const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
{
    return NULL;
}


wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y) const
{
    if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
        return wxConstCast(this, wxHtmlCell);

    return NULL;
}


//-----------------------------------------------------------------------------
// wxHtmlWordCell
//-----------------------------------------------------------------------------

wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
{
    m_Word = word;
    dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
    SetCanLiveOnPagebreak(FALSE);
}


void wxHtmlWordCell::Draw(wxDC& dc, int x, int y, int WXUNUSED(view_y1), int WXUNUSED(view_y2))
{
    dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
}


//-----------------------------------------------------------------------------
// wxHtmlContainerCell
//-----------------------------------------------------------------------------


wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
{
    m_Cells = m_LastCell = NULL;
    m_Parent = parent;
    if (m_Parent) m_Parent->InsertCell(this);
    m_AlignHor = wxHTML_ALIGN_LEFT;
    m_AlignVer = wxHTML_ALIGN_BOTTOM;
    m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
    m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
    m_UseBkColour = FALSE;
    m_UseBorder = FALSE;
    m_MinHeight = 0;
    m_MinHeightAlign = wxHTML_ALIGN_TOP;
    m_LastLayout = -1;
}

wxHtmlContainerCell::~wxHtmlContainerCell()
{
    wxHtmlCell *cell = m_Cells;
    while ( cell )
    {
        wxHtmlCell *cellNext = cell->GetNext();
        delete cell;
        cell = cellNext;
    }
}


void wxHtmlContainerCell::SetIndent(int i, int what, int units)
{
    int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
    if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
    if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
    if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
    if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
    m_LastLayout = -1;
}


int wxHtmlContainerCell::GetIndent(int ind) const
{
    if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
    else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
    else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
    else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
    else return -1; /* BUG! Should not be called... */
}


int wxHtmlContainerCell::GetIndentUnits(int ind) const
{
    bool p = FALSE;
    if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
    else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
    else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
    else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
    if (p) return wxHTML_UNITS_PERCENT;
    else return wxHTML_UNITS_PIXELS;
}


bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak) const
{
    if (!m_CanLiveOnPagebreak)
        return wxHtmlCell::AdjustPagebreak(pagebreak);

    else
    {
        wxHtmlCell *c = GetFirstCell();
        bool rt = FALSE;
        int pbrk = *pagebreak - m_PosY;

        while (c)
        {
            if (c->AdjustPagebreak(&pbrk))
                rt = TRUE;
            c = c->GetNext();
        }
        if (rt)
            *pagebreak = pbrk + m_PosY;
        return rt;
    }
}


void wxHtmlContainerCell::Layout(int w)
{
    wxHtmlCell::Layout(w);

    if (m_LastLayout == w) return;

    // VS: Any attempt to layout with negative or zero width leads to hell,
    // but we can't ignore such attempts completely, since it sometimes
    // happen (e.g. when trying how small a table can be). The best thing we
    // can do is to set the width of child cells to zero
    if (w < 1)
    {
       m_Width = 0;
       for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
            cell->Layout(0);
            // this does two things: it recursively calls this code on all child
            // contrainers and resets children's position to (0,0)
       return;
    }

    wxHtmlCell *cell = m_Cells, *line = m_Cells;
    long xpos = 0, ypos = m_IndentTop;
    int xdelta = 0, ybasicpos = 0, ydiff;
    int s_width, s_indent;
    int ysizeup = 0, ysizedown = 0;
    int MaxLineWidth = 0;
    int xcnt = 0;


    /*

    WIDTH ADJUSTING :

    */

    if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
    {
        if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
        else m_Width = m_WidthFloat * w / 100;
    }
    else
    {
        if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
        else m_Width = m_WidthFloat;
    }

    if (m_Cells)
    {
        int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
        int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
            cell->Layout(m_Width - (l + r));
    }

    /*

    LAYOUTING :

    */

    // adjust indentation:
    s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
    s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);

    // my own layouting:
    while (cell != NULL)
    {
        switch (m_AlignVer)
        {
            case wxHTML_ALIGN_TOP :      ybasicpos = 0; break;
            case wxHTML_ALIGN_BOTTOM :   ybasicpos = - cell->GetHeight(); break;
            case wxHTML_ALIGN_CENTER :   ybasicpos = - cell->GetHeight() / 2; break;
        }
        ydiff = cell->GetHeight() + ybasicpos;

        if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
        if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());

        cell->SetPos(xpos, ybasicpos + cell->GetDescent());
        xpos += cell->GetWidth();
        cell = cell->GetNext();
        xcnt++;

        // force new line if occured:
        if ((cell == NULL) || (xpos + cell->GetWidth() > s_width))
        {
            if (xpos > MaxLineWidth) MaxLineWidth = xpos;
            if (ysizeup < 0) ysizeup = 0;
            if (ysizedown < 0) ysizedown = 0;
            switch (m_AlignHor) {
                case wxHTML_ALIGN_LEFT :
                case wxHTML_ALIGN_JUSTIFY :
                         xdelta = 0;
                         break;
                case wxHTML_ALIGN_RIGHT :
                         xdelta = 0 + (s_width - xpos);
                         break;
                case wxHTML_ALIGN_CENTER :
                         xdelta = 0 + (s_width - xpos) / 2;
                         break;
            }
            if (xdelta < 0) xdelta = 0;
            xdelta += s_indent;

            ypos += ysizeup;

            if (m_AlignHor != wxHTML_ALIGN_JUSTIFY || cell == NULL)
                while (line != cell)
                {
                    line->SetPos(line->GetPosX() + xdelta,
                                   ypos + line->GetPosY());
                    line = line->GetNext();
                }
            else
            {
                int counter = 0;
                int step = (s_width - xpos);
                if (step < 0) step = 0;
                xcnt--;
                if (xcnt > 0) while (line != cell)
                {
                    line->SetPos(line->GetPosX() + s_indent +
                                   (counter++ * step / xcnt),
                                   ypos + line->GetPosY());
                    line = line->GetNext();
                }
                xcnt++;
            }

            ypos += ysizedown;
            xpos = xcnt = 0;
            ysizeup = ysizedown = 0;
            line = cell;
        }
    }

    // setup height & width, depending on container layout:
    m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;

    if (m_Height < m_MinHeight)
    {
        if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
        {
            int diff = m_MinHeight - m_Height;
            if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
            cell = m_Cells;
            while (cell)
            {
                cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
                cell = cell->GetNext();
            }
        }
        m_Height = m_MinHeight;
    }

    MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
    if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;

    m_LastLayout = w;
}


#define mMin(a, b) (((a) < (b)) ? (a) : (b))
#define mMax(a, b) (((a) < (b)) ? (b) : (a))

void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
{
    // container visible, draw it:
    if ((y + m_PosY < view_y2) && (y + m_PosY + m_Height > view_y1))
    {

        if (m_UseBkColour)
        {
            wxBrush myb = wxBrush(m_BkColour, wxSOLID);

            int real_y1 = mMax(y + m_PosY, view_y1);
            int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);

            dc.SetBrush(myb);
            dc.SetPen(*wxTRANSPARENT_PEN);
            dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
        }

        if (m_UseBorder)
        {
            wxPen mypen1(m_BorderColour1, 1, wxSOLID);
            wxPen mypen2(m_BorderColour2, 1, wxSOLID);

            dc.SetPen(mypen1);
            dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
            dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width - 1, y + m_PosY);
            dc.SetPen(mypen2);
            dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX +  m_Width - 1, y + m_PosY + m_Height - 1);
            dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width - 1, y + m_PosY + m_Height - 1);
        }

        if (m_Cells)
        {
            for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
                cell->Draw(dc, x + m_PosX, y + m_PosY, view_y1, view_y2);
        }
    }
    // container invisible, just proceed font+color changing:
    else
    {
        if (m_Cells)
        {
            for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
                cell->DrawInvisible(dc, x + m_PosX, y + m_PosY);
        }
    }
}


void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y)
{
    if (m_Cells)
    {
        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
            cell->DrawInvisible(dc, x + m_PosX, y + m_PosY);
    }
}


wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
{
    wxHtmlCell *cell = FindCellByPos(x, y);

    // VZ: I don't know if we should pass absolute or relative coords to
    //     wxHtmlCell::GetLink()? As the base class version just ignores them
    //     anyhow, it hardly matters right now but should still be clarified
    return cell ? cell->GetLink(x, y) : NULL;
}


void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
{
    if (!m_Cells) m_Cells = m_LastCell = f;
    else
    {
        m_LastCell->SetNext(f);
        m_LastCell = f;
        if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
    }
    f->SetParent(this);
    m_LastLayout = -1;
}


void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
{
    if (tag.HasParam(wxT("ALIGN")))
    {
        wxString alg = tag.GetParam(wxT("ALIGN"));
        alg.MakeUpper();
        if (alg == wxT("CENTER"))
            SetAlignHor(wxHTML_ALIGN_CENTER);
        else if (alg == wxT("LEFT"))
            SetAlignHor(wxHTML_ALIGN_LEFT);
        else if (alg == wxT("JUSTIFY"))
            SetAlignHor(wxHTML_ALIGN_JUSTIFY);
        else if (alg == wxT("RIGHT"))
            SetAlignHor(wxHTML_ALIGN_RIGHT);
        m_LastLayout = -1;
    }
}


void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
{
    if (tag.HasParam(wxT("WIDTH")))
    {
        int wdi;
        wxString wd = tag.GetParam(wxT("WIDTH"));

        if (wd[wd.Length()-1] == wxT('%'))
        {
            wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
            SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
        }
        else
        {
            wxSscanf(wd.c_str(), wxT("%i"), &wdi);
            SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
        }
        m_LastLayout = -1;
    }
}


const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
{
    if (m_Cells)
    {
        const wxHtmlCell *r = NULL;

        for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
        {
            r = cell->Find(condition, param);
            if (r) return r;
        }
    }
    return NULL;
}


wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y) const
{
    for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
    {
        int cx = cell->GetPosX(),
            cy = cell->GetPosY();

        if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
             (cy <= y) && (cy + cell->GetHeight() > y) )
        {
            return cell->FindCellByPos(x - cx, y - cy);
        }
    }

    return NULL;
}


void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
{
    wxHtmlCell *cell = FindCellByPos(x, y);
    if ( cell )
        cell->OnMouseClick(parent, x, y, event);
}


void wxHtmlContainerCell::GetHorizontalConstraints(int *left, int *right) const
{
    int cleft = m_PosX + m_Width, cright = m_PosX; // worst case
    int l, r;

    for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
    {
        cell->GetHorizontalConstraints(&l, &r);
        if (l < cleft)
            cleft = l;
        if (r > cright)
            cright = r;
    }

    cleft -= (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
    cright += (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;

    if (left)
        *left = cleft;
    if (right)
        *right = cright;
}


//--------------------------------------------------------------------------------
// wxHtmlColourCell
//--------------------------------------------------------------------------------

void wxHtmlColourCell::Draw(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
{
    if (m_Flags & wxHTML_CLR_FOREGROUND)
        dc.SetTextForeground(m_Colour);
    if (m_Flags & wxHTML_CLR_BACKGROUND)
    {
        dc.SetBackground(wxBrush(m_Colour, wxSOLID));
        dc.SetTextBackground(m_Colour);
    }
}

void wxHtmlColourCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y))
{
    if (m_Flags & wxHTML_CLR_FOREGROUND)
        dc.SetTextForeground(m_Colour);
    if (m_Flags & wxHTML_CLR_BACKGROUND)
    {
        dc.SetBackground(wxBrush(m_Colour, wxSOLID));
        dc.SetTextBackground(m_Colour);
    }
}


//--------------------------------------------------------------------------------
// wxHtmlFontCell
//--------------------------------------------------------------------------------

void wxHtmlFontCell::Draw(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
{
    dc.SetFont(m_Font);
}

void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y))
{
    dc.SetFont(m_Font);
}


//--------------------------------------------------------------------------------
// wxHtmlWidgetCell
//--------------------------------------------------------------------------------

wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
{
    int sx, sy;
    m_Wnd = wnd;
    m_Wnd->GetSize(&sx, &sy);
    m_Width = sx, m_Height = sy;
    m_WidthFloat = w;
}


void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc), int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
{
    int absx = 0, absy = 0, stx, sty;
    wxHtmlCell *c = this;

    while (c)
    {
        absx += c->GetPosX();
        absy += c->GetPosY();
        c = c->GetParent();
    }

    ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
    m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
}


void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc), int WXUNUSED(x), int WXUNUSED(y))
{
    int absx = 0, absy = 0, stx, sty;
    wxHtmlCell *c = this;

    while (c)
    {
        absx += c->GetPosX();
        absy += c->GetPosY();
        c = c->GetParent();
    }

    ((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
    m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy  - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
}


void wxHtmlWidgetCell::Layout(int w)
{
    if (m_WidthFloat != 0)
    {
        m_Width = (w * m_WidthFloat) / 100;
        m_Wnd->SetSize(m_Width, m_Height);
    }

    wxHtmlCell::Layout(w);
}

#endif
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: htmlcell.cpp
	3	// Purpose: wxHtmlCell - basic element of HTML output
	4	// Author: Vaclav Slavik
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1999 Vaclav Slavik
	7	// Licence: wxWindows Licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
	16	#include "wx/defs.h"
	17
	18	#if wxUSE_HTML && wxUSE_STREAMS
	19
	20	#ifdef __BORDLANDC__
	21	#pragma hdrstop
	22	#endif
	23
	24	#ifndef WXPRECOMP
	25	#include "wx/brush.h"
	26	#include "wx/colour.h"
	27	#include "wx/dc.h"
	28	#endif
	29
	30	#include "wx/html/htmlcell.h"
	31	#include "wx/html/htmlwin.h"
	32	#include <stdlib.h>
	33
	34
	35	//-----------------------------------------------------------------------------
	36	// wxHtmlCell
	37	//-----------------------------------------------------------------------------
	38
	39	wxHtmlCell::wxHtmlCell() : wxObject()
	40	{
	41	m_Next = NULL;
	42	m_Parent = NULL;
	43	m_Width = m_Height = m_Descent = 0;
	44	m_CanLiveOnPagebreak = TRUE;
	45	m_Link = NULL;
	46	}
	47
	48	wxHtmlCell::~wxHtmlCell()
	49	{
	50	delete m_Link;
	51	}
	52
	53
	54	void wxHtmlCell::OnMouseClick(wxWindow *parent, int x, int y,
	55	const wxMouseEvent& event)
	56	{
	57	wxHtmlLinkInfo *lnk = GetLink(x, y);
	58	if (lnk != NULL)
	59	{
	60	wxHtmlLinkInfo lnk2(*lnk);
	61	lnk2.SetEvent(&event);
	62	lnk2.SetHtmlCell(this);
	63
	64	// note : this cast is legal because parent is always wxHtmlWindow
	65	wxStaticCast(parent, wxHtmlWindow)->OnLinkClicked(lnk2);
	66	}
	67	}
	68
	69
	70
	71	bool wxHtmlCell::AdjustPagebreak(int *pagebreak) const
	72	{
	73	if ((!m_CanLiveOnPagebreak) &&
	74	m_PosY < pagebreak && m_PosY + m_Height > pagebreak)
	75	{
	76	*pagebreak = m_PosY;
	77	return TRUE;
	78	}
	79
	80	return FALSE;
	81	}
	82
	83
	84
	85	void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
	86	{
	87	if (m_Link) delete m_Link;
	88	m_Link = NULL;
	89	if (link.GetHref() != wxEmptyString)
	90	m_Link = new wxHtmlLinkInfo(link);
	91	}
	92
	93
	94
	95	void wxHtmlCell::Layout(int WXUNUSED(w))
	96	{
	97	SetPos(0, 0);
	98	}
	99
	100
	101
	102	void wxHtmlCell::GetHorizontalConstraints(int left, int right) const
	103	{
	104	if (left)
	105	*left = m_PosX;
	106	if (right)
	107	*right = m_PosX + m_Width;
	108	}
	109
	110
	111
	112	const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
	113	{
	114	return NULL;
	115	}
	116
	117
	118	wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y) const
	119	{
	120	if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
	121	return wxConstCast(this, wxHtmlCell);
	122
	123	return NULL;
	124	}
	125
	126
	127	//-----------------------------------------------------------------------------
	128	// wxHtmlWordCell
	129	//-----------------------------------------------------------------------------
	130
	131	wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
	132	{
	133	m_Word = word;
	134	dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
	135	SetCanLiveOnPagebreak(FALSE);
	136	}
	137
	138
	139
	140	void wxHtmlWordCell::Draw(wxDC& dc, int x, int y, int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	141	{
	142	dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
	143	}
	144
	145
	146
	147	//-----------------------------------------------------------------------------
	148	// wxHtmlContainerCell
	149	//-----------------------------------------------------------------------------
	150
	151
	152	wxHtmlContainerCell::wxHtmlContainerCell(wxHtmlContainerCell *parent) : wxHtmlCell()
	153	{
	154	m_Cells = m_LastCell = NULL;
	155	m_Parent = parent;
	156	if (m_Parent) m_Parent->InsertCell(this);
	157	m_AlignHor = wxHTML_ALIGN_LEFT;
	158	m_AlignVer = wxHTML_ALIGN_BOTTOM;
	159	m_IndentLeft = m_IndentRight = m_IndentTop = m_IndentBottom = 0;
	160	m_WidthFloat = 100; m_WidthFloatUnits = wxHTML_UNITS_PERCENT;
	161	m_UseBkColour = FALSE;
	162	m_UseBorder = FALSE;
	163	m_MinHeight = 0;
	164	m_MinHeightAlign = wxHTML_ALIGN_TOP;
	165	m_LastLayout = -1;
	166	}
	167
	168	wxHtmlContainerCell::~wxHtmlContainerCell()
	169	{
	170	wxHtmlCell *cell = m_Cells;
	171	while ( cell )
	172	{
	173	wxHtmlCell *cellNext = cell->GetNext();
	174	delete cell;
	175	cell = cellNext;
	176	}
	177	}
	178
	179
	180
	181	void wxHtmlContainerCell::SetIndent(int i, int what, int units)
	182	{
	183	int val = (units == wxHTML_UNITS_PIXELS) ? i : -i;
	184	if (what & wxHTML_INDENT_LEFT) m_IndentLeft = val;
	185	if (what & wxHTML_INDENT_RIGHT) m_IndentRight = val;
	186	if (what & wxHTML_INDENT_TOP) m_IndentTop = val;
	187	if (what & wxHTML_INDENT_BOTTOM) m_IndentBottom = val;
	188	m_LastLayout = -1;
	189	}
	190
	191
	192
	193	int wxHtmlContainerCell::GetIndent(int ind) const
	194	{
	195	if (ind & wxHTML_INDENT_LEFT) return m_IndentLeft;
	196	else if (ind & wxHTML_INDENT_RIGHT) return m_IndentRight;
	197	else if (ind & wxHTML_INDENT_TOP) return m_IndentTop;
	198	else if (ind & wxHTML_INDENT_BOTTOM) return m_IndentBottom;
	199	else return -1; /* BUG! Should not be called... */
	200	}
	201
	202
	203
	204
	205	int wxHtmlContainerCell::GetIndentUnits(int ind) const
	206	{
	207	bool p = FALSE;
	208	if (ind & wxHTML_INDENT_LEFT) p = m_IndentLeft < 0;
	209	else if (ind & wxHTML_INDENT_RIGHT) p = m_IndentRight < 0;
	210	else if (ind & wxHTML_INDENT_TOP) p = m_IndentTop < 0;
	211	else if (ind & wxHTML_INDENT_BOTTOM) p = m_IndentBottom < 0;
	212	if (p) return wxHTML_UNITS_PERCENT;
	213	else return wxHTML_UNITS_PIXELS;
	214	}
	215
	216
	217
	218	bool wxHtmlContainerCell::AdjustPagebreak(int *pagebreak) const
	219	{
	220	if (!m_CanLiveOnPagebreak)
	221	return wxHtmlCell::AdjustPagebreak(pagebreak);
	222
	223	else
	224	{
	225	wxHtmlCell *c = GetFirstCell();
	226	bool rt = FALSE;
	227	int pbrk = *pagebreak - m_PosY;
	228
	229	while (c)
	230	{
	231	if (c->AdjustPagebreak(&pbrk))
	232	rt = TRUE;
	233	c = c->GetNext();
	234	}
	235	if (rt)
	236	*pagebreak = pbrk + m_PosY;
	237	return rt;
	238	}
	239	}
	240
	241
	242
	243	void wxHtmlContainerCell::Layout(int w)
	244	{
	245	wxHtmlCell::Layout(w);
	246
	247	if (m_LastLayout == w) return;
	248
	249	// VS: Any attempt to layout with negative or zero width leads to hell,
	250	// but we can't ignore such attempts completely, since it sometimes
	251	// happen (e.g. when trying how small a table can be). The best thing we
	252	// can do is to set the width of child cells to zero
	253	if (w < 1)
	254	{
	255	m_Width = 0;
	256	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	257	cell->Layout(0);
	258	// this does two things: it recursively calls this code on all child
	259	// contrainers and resets children's position to (0,0)
	260	return;
	261	}
	262
	263	wxHtmlCell cell = m_Cells, line = m_Cells;
	264	long xpos = 0, ypos = m_IndentTop;
	265	int xdelta = 0, ybasicpos = 0, ydiff;
	266	int s_width, s_indent;
	267	int ysizeup = 0, ysizedown = 0;
	268	int MaxLineWidth = 0;
	269	int xcnt = 0;
	270
	271
	272	/*
	273
	274	WIDTH ADJUSTING :
	275
	276	*/
	277
	278	if (m_WidthFloatUnits == wxHTML_UNITS_PERCENT)
	279	{
	280	if (m_WidthFloat < 0) m_Width = (100 + m_WidthFloat) * w / 100;
	281	else m_Width = m_WidthFloat * w / 100;
	282	}
	283	else
	284	{
	285	if (m_WidthFloat < 0) m_Width = w + m_WidthFloat;
	286	else m_Width = m_WidthFloat;
	287	}
	288
	289	if (m_Cells)
	290	{
	291	int l = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
	292	int r = (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
	293	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	294	cell->Layout(m_Width - (l + r));
	295	}
	296
	297	/*
	298
	299	LAYOUTING :
	300
	301	*/
	302
	303	// adjust indentation:
	304	s_indent = (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
	305	s_width = m_Width - s_indent - ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
	306
	307	// my own layouting:
	308	while (cell != NULL)
	309	{
	310	switch (m_AlignVer)
	311	{
	312	case wxHTML_ALIGN_TOP : ybasicpos = 0; break;
	313	case wxHTML_ALIGN_BOTTOM : ybasicpos = - cell->GetHeight(); break;
	314	case wxHTML_ALIGN_CENTER : ybasicpos = - cell->GetHeight() / 2; break;
	315	}
	316	ydiff = cell->GetHeight() + ybasicpos;
	317
	318	if (cell->GetDescent() + ydiff > ysizedown) ysizedown = cell->GetDescent() + ydiff;
	319	if (ybasicpos + cell->GetDescent() < -ysizeup) ysizeup = - (ybasicpos + cell->GetDescent());
	320
	321	cell->SetPos(xpos, ybasicpos + cell->GetDescent());
	322	xpos += cell->GetWidth();
	323	cell = cell->GetNext();
	324	xcnt++;
	325
	326	// force new line if occured:
	327	if ((cell == NULL) \|\| (xpos + cell->GetWidth() > s_width))
	328	{
	329	if (xpos > MaxLineWidth) MaxLineWidth = xpos;
	330	if (ysizeup < 0) ysizeup = 0;
	331	if (ysizedown < 0) ysizedown = 0;
	332	switch (m_AlignHor) {
	333	case wxHTML_ALIGN_LEFT :
	334	case wxHTML_ALIGN_JUSTIFY :
	335	xdelta = 0;
	336	break;
	337	case wxHTML_ALIGN_RIGHT :
	338	xdelta = 0 + (s_width - xpos);
	339	break;
	340	case wxHTML_ALIGN_CENTER :
	341	xdelta = 0 + (s_width - xpos) / 2;
	342	break;
	343	}
	344	if (xdelta < 0) xdelta = 0;
	345	xdelta += s_indent;
	346
	347	ypos += ysizeup;
	348
	349	if (m_AlignHor != wxHTML_ALIGN_JUSTIFY \|\| cell == NULL)
	350	while (line != cell)
	351	{
	352	line->SetPos(line->GetPosX() + xdelta,
	353	ypos + line->GetPosY());
	354	line = line->GetNext();
	355	}
	356	else
	357	{
	358	int counter = 0;
	359	int step = (s_width - xpos);
	360	if (step < 0) step = 0;
	361	xcnt--;
	362	if (xcnt > 0) while (line != cell)
	363	{
	364	line->SetPos(line->GetPosX() + s_indent +
	365	(counter++ * step / xcnt),
	366	ypos + line->GetPosY());
	367	line = line->GetNext();
	368	}
	369	xcnt++;
	370	}
	371
	372	ypos += ysizedown;
	373	xpos = xcnt = 0;
	374	ysizeup = ysizedown = 0;
	375	line = cell;
	376	}
	377	}
	378
	379	// setup height & width, depending on container layout:
	380	m_Height = ypos + (ysizedown + ysizeup) + m_IndentBottom;
	381
	382	if (m_Height < m_MinHeight)
	383	{
	384	if (m_MinHeightAlign != wxHTML_ALIGN_TOP)
	385	{
	386	int diff = m_MinHeight - m_Height;
	387	if (m_MinHeightAlign == wxHTML_ALIGN_CENTER) diff /= 2;
	388	cell = m_Cells;
	389	while (cell)
	390	{
	391	cell->SetPos(cell->GetPosX(), cell->GetPosY() + diff);
	392	cell = cell->GetNext();
	393	}
	394	}
	395	m_Height = m_MinHeight;
	396	}
	397
	398	MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
	399	if (m_Width < MaxLineWidth) m_Width = MaxLineWidth;
	400
	401	m_LastLayout = w;
	402	}
	403
	404
	405	#define mMin(a, b) (((a) < (b)) ? (a) : (b))
	406	#define mMax(a, b) (((a) < (b)) ? (b) : (a))
	407
	408	void wxHtmlContainerCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
	409	{
	410	// container visible, draw it:
	411	if ((y + m_PosY < view_y2) && (y + m_PosY + m_Height > view_y1))
	412	{
	413
	414	if (m_UseBkColour)
	415	{
	416	wxBrush myb = wxBrush(m_BkColour, wxSOLID);
	417
	418	int real_y1 = mMax(y + m_PosY, view_y1);
	419	int real_y2 = mMin(y + m_PosY + m_Height - 1, view_y2);
	420
	421	dc.SetBrush(myb);
	422	dc.SetPen(*wxTRANSPARENT_PEN);
	423	dc.DrawRectangle(x + m_PosX, real_y1, m_Width, real_y2 - real_y1 + 1);
	424	}
	425
	426	if (m_UseBorder)
	427	{
	428	wxPen mypen1(m_BorderColour1, 1, wxSOLID);
	429	wxPen mypen2(m_BorderColour2, 1, wxSOLID);
	430
	431	dc.SetPen(mypen1);
	432	dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX, y + m_PosY + m_Height - 1);
	433	dc.DrawLine(x + m_PosX, y + m_PosY, x + m_PosX + m_Width - 1, y + m_PosY);
	434	dc.SetPen(mypen2);
	435	dc.DrawLine(x + m_PosX + m_Width - 1, y + m_PosY, x + m_PosX + m_Width - 1, y + m_PosY + m_Height - 1);
	436	dc.DrawLine(x + m_PosX, y + m_PosY + m_Height - 1, x + m_PosX + m_Width - 1, y + m_PosY + m_Height - 1);
	437	}
	438
	439	if (m_Cells)
	440	{
	441	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	442	cell->Draw(dc, x + m_PosX, y + m_PosY, view_y1, view_y2);
	443	}
	444	}
	445	// container invisible, just proceed font+color changing:
	446	else
	447	{
	448	if (m_Cells)
	449	{
	450	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	451	cell->DrawInvisible(dc, x + m_PosX, y + m_PosY);
	452	}
	453	}
	454	}
	455
	456
	457
	458	void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y)
	459	{
	460	if (m_Cells)
	461	{
	462	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	463	cell->DrawInvisible(dc, x + m_PosX, y + m_PosY);
	464	}
	465	}
	466
	467
	468
	469	wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
	470	{
	471	wxHtmlCell *cell = FindCellByPos(x, y);
	472
	473	// VZ: I don't know if we should pass absolute or relative coords to
	474	// wxHtmlCell::GetLink()? As the base class version just ignores them
	475	// anyhow, it hardly matters right now but should still be clarified
	476	return cell ? cell->GetLink(x, y) : NULL;
	477	}
	478
	479
	480
	481	void wxHtmlContainerCell::InsertCell(wxHtmlCell *f)
	482	{
	483	if (!m_Cells) m_Cells = m_LastCell = f;
	484	else
	485	{
	486	m_LastCell->SetNext(f);
	487	m_LastCell = f;
	488	if (m_LastCell) while (m_LastCell->GetNext()) m_LastCell = m_LastCell->GetNext();
	489	}
	490	f->SetParent(this);
	491	m_LastLayout = -1;
	492	}
	493
	494
	495
	496	void wxHtmlContainerCell::SetAlign(const wxHtmlTag& tag)
	497	{
	498	if (tag.HasParam(wxT("ALIGN")))
	499	{
	500	wxString alg = tag.GetParam(wxT("ALIGN"));
	501	alg.MakeUpper();
	502	if (alg == wxT("CENTER"))
	503	SetAlignHor(wxHTML_ALIGN_CENTER);
	504	else if (alg == wxT("LEFT"))
	505	SetAlignHor(wxHTML_ALIGN_LEFT);
	506	else if (alg == wxT("JUSTIFY"))
	507	SetAlignHor(wxHTML_ALIGN_JUSTIFY);
	508	else if (alg == wxT("RIGHT"))
	509	SetAlignHor(wxHTML_ALIGN_RIGHT);
	510	m_LastLayout = -1;
	511	}
	512	}
	513
	514
	515
	516	void wxHtmlContainerCell::SetWidthFloat(const wxHtmlTag& tag, double pixel_scale)
	517	{
	518	if (tag.HasParam(wxT("WIDTH")))
	519	{
	520	int wdi;
	521	wxString wd = tag.GetParam(wxT("WIDTH"));
	522
	523	if (wd[wd.Length()-1] == wxT('%'))
	524	{
	525	wxSscanf(wd.c_str(), wxT("%i%%"), &wdi);
	526	SetWidthFloat(wdi, wxHTML_UNITS_PERCENT);
	527	}
	528	else
	529	{
	530	wxSscanf(wd.c_str(), wxT("%i"), &wdi);
	531	SetWidthFloat((int)(pixel_scale * (double)wdi), wxHTML_UNITS_PIXELS);
	532	}
	533	m_LastLayout = -1;
	534	}
	535	}
	536
	537
	538
	539	const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
	540	{
	541	if (m_Cells)
	542	{
	543	const wxHtmlCell *r = NULL;
	544
	545	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	546	{
	547	r = cell->Find(condition, param);
	548	if (r) return r;
	549	}
	550	}
	551	return NULL;
	552	}
	553
	554
	555	wxHtmlCell *wxHtmlContainerCell::FindCellByPos(wxCoord x, wxCoord y) const
	556	{
	557	for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
	558	{
	559	int cx = cell->GetPosX(),
	560	cy = cell->GetPosY();
	561
	562	if ( (cx <= x) && (cx + cell->GetWidth() > x) &&
	563	(cy <= y) && (cy + cell->GetHeight() > y) )
	564	{
	565	return cell->FindCellByPos(x - cx, y - cy);
	566	}
	567	}
	568
	569	return NULL;
	570	}
	571
	572
	573	void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
	574	{
	575	wxHtmlCell *cell = FindCellByPos(x, y);
	576	if ( cell )
	577	cell->OnMouseClick(parent, x, y, event);
	578	}
	579
	580
	581
	582	void wxHtmlContainerCell::GetHorizontalConstraints(int left, int right) const
	583	{
	584	int cleft = m_PosX + m_Width, cright = m_PosX; // worst case
	585	int l, r;
	586
	587	for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
	588	{
	589	cell->GetHorizontalConstraints(&l, &r);
	590	if (l < cleft)
	591	cleft = l;
	592	if (r > cright)
	593	cright = r;
	594	}
	595
	596	cleft -= (m_IndentLeft < 0) ? (-m_IndentLeft * m_Width / 100) : m_IndentLeft;
	597	cright += (m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight;
	598
	599	if (left)
	600	*left = cleft;
	601	if (right)
	602	*right = cright;
	603	}
	604
	605
	606
	607
	608
	609	//--------------------------------------------------------------------------------
	610	// wxHtmlColourCell
	611	//--------------------------------------------------------------------------------
	612
	613	void wxHtmlColourCell::Draw(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	614	{
	615	if (m_Flags & wxHTML_CLR_FOREGROUND)
	616	dc.SetTextForeground(m_Colour);
	617	if (m_Flags & wxHTML_CLR_BACKGROUND)
	618	{
	619	dc.SetBackground(wxBrush(m_Colour, wxSOLID));
	620	dc.SetTextBackground(m_Colour);
	621	}
	622	}
	623
	624	void wxHtmlColourCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y))
	625	{
	626	if (m_Flags & wxHTML_CLR_FOREGROUND)
	627	dc.SetTextForeground(m_Colour);
	628	if (m_Flags & wxHTML_CLR_BACKGROUND)
	629	{
	630	dc.SetBackground(wxBrush(m_Colour, wxSOLID));
	631	dc.SetTextBackground(m_Colour);
	632	}
	633	}
	634
	635
	636
	637
	638	//--------------------------------------------------------------------------------
	639	// wxHtmlFontCell
	640	//--------------------------------------------------------------------------------
	641
	642	void wxHtmlFontCell::Draw(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	643	{
	644	dc.SetFont(m_Font);
	645	}
	646
	647	void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y))
	648	{
	649	dc.SetFont(m_Font);
	650	}
	651
	652
	653
	654
	655
	656
	657
	658
	659	//--------------------------------------------------------------------------------
	660	// wxHtmlWidgetCell
	661	//--------------------------------------------------------------------------------
	662
	663	wxHtmlWidgetCell::wxHtmlWidgetCell(wxWindow *wnd, int w)
	664	{
	665	int sx, sy;
	666	m_Wnd = wnd;
	667	m_Wnd->GetSize(&sx, &sy);
	668	m_Width = sx, m_Height = sy;
	669	m_WidthFloat = w;
	670	}
	671
	672
	673	void wxHtmlWidgetCell::Draw(wxDC& WXUNUSED(dc), int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(view_y1), int WXUNUSED(view_y2))
	674	{
	675	int absx = 0, absy = 0, stx, sty;
	676	wxHtmlCell *c = this;
	677
	678	while (c)
	679	{
	680	absx += c->GetPosX();
	681	absy += c->GetPosY();
	682	c = c->GetParent();
	683	}
	684
	685	((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
	686	m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
	687	}
	688
	689
	690
	691	void wxHtmlWidgetCell::DrawInvisible(wxDC& WXUNUSED(dc), int WXUNUSED(x), int WXUNUSED(y))
	692	{
	693	int absx = 0, absy = 0, stx, sty;
	694	wxHtmlCell *c = this;
	695
	696	while (c)
	697	{
	698	absx += c->GetPosX();
	699	absy += c->GetPosY();
	700	c = c->GetParent();
	701	}
	702
	703	((wxScrolledWindow*)(m_Wnd->GetParent()))->GetViewStart(&stx, &sty);
	704	m_Wnd->SetSize(absx - wxHTML_SCROLL_STEP * stx, absy - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
	705	}
	706
	707
	708
	709	void wxHtmlWidgetCell::Layout(int w)
	710	{
	711	if (m_WidthFloat != 0)
	712	{
	713	m_Width = (w * m_WidthFloat) / 100;
	714	m_Wnd->SetSize(m_Width, m_Height);
	715	}
	716
	717	wxHtmlCell::Layout(w);
	718	}
	719
	720	#endif