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67158ef673197ddc1a6ef977ccefc397a3798d84
wxWidgets/src/html/htmlcell.cpp
Václav Slavík 67158ef673 removed GetHorizontalConstraints -- no longer needed 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22016 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-07-16 13:04:37 +00:00

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/////////////////////////////////////////////////////////////////////////////
// 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 "htmlcell.h"
#endif
#include "wx/wxprec.h"
#include "wx/defs.h"
#if wxUSE_HTML && wxUSE_STREAMS
#ifdef __BORLANDC__
#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 "wx/settings.h"
#include "wx/module.h"
#include <stdlib.h>
//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
static wxCursor *gs_cursorLink = NULL;
static wxCursor *gs_cursorText = NULL;
//-----------------------------------------------------------------------------
// Helper classes
//-----------------------------------------------------------------------------
void wxHtmlSelection::Set(const wxPoint& fromPos, const wxHtmlCell *fromCell,
const wxPoint& toPos, const wxHtmlCell *toCell)
{
m_fromCell = fromCell;
m_toCell = toCell;
m_fromPos = fromPos;
m_toPos = toPos;
}
void wxHtmlSelection::Set(const wxHtmlCell *fromCell, const wxHtmlCell *toCell)
{
wxPoint p1 = fromCell ? fromCell->GetAbsPos() : wxDefaultPosition;
wxPoint p2 = toCell ? toCell->GetAbsPos() : wxDefaultPosition;
if ( toCell )
{
p2.x += toCell->GetWidth()-1;
p2.y += toCell->GetHeight()-1;
}
Set(p1, fromCell, p2, toCell);
}
wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextColour(
const wxColour& clr)
{
return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
}
wxColour wxDefaultHtmlRenderingStyle::GetSelectedTextBgColour(
const wxColour& WXUNUSED(clr))
{
return wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
}
//-----------------------------------------------------------------------------
// 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);
}
}
wxCursor wxHtmlCell::GetCursor() const
{
if ( GetLink() )
{
if ( !gs_cursorLink )
gs_cursorLink = new wxCursor(wxCURSOR_HAND);
return *gs_cursorLink;
}
else
return *wxSTANDARD_CURSOR;
}
bool wxHtmlCell::AdjustPagebreak(int *pagebreak, int* WXUNUSED(known_pagebreaks), int WXUNUSED(number_of_pages)) 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);
}
const wxHtmlCell* wxHtmlCell::Find(int WXUNUSED(condition), const void* WXUNUSED(param)) const
{
return NULL;
}
wxHtmlCell *wxHtmlCell::FindCellByPos(wxCoord x, wxCoord y,
unsigned flags) const
{
if ( x >= 0 && x < m_Width && y >= 0 && y < m_Height )
{
return wxConstCast(this, wxHtmlCell);
}
else
{
if ((flags & wxHTML_FIND_NEAREST_AFTER) &&
(y < 0 || (y < 0+m_Height && x < 0+m_Width)))
return wxConstCast(this, wxHtmlCell);
else if ((flags & wxHTML_FIND_NEAREST_BEFORE) &&
(y >= 0+m_Height || (y >= 0 && x >= 0)))
return wxConstCast(this, wxHtmlCell);
else
return NULL;
}
}
wxPoint wxHtmlCell::GetAbsPos() const
{
wxPoint p(m_PosX, m_PosY);
for (wxHtmlCell *parent = m_Parent; parent; parent = parent->m_Parent)
{
p.x += parent->m_PosX;
p.y += parent->m_PosY;
}
return p;
}
unsigned wxHtmlCell::GetDepth() const
{
unsigned d = 0;
for (wxHtmlCell *p = m_Parent; p; p = p->m_Parent)
d++;
return d;
}
bool wxHtmlCell::IsBefore(wxHtmlCell *cell) const
{
const wxHtmlCell *c1 = this;
const wxHtmlCell *c2 = cell;
unsigned d1 = GetDepth();
unsigned d2 = cell->GetDepth();
if ( d1 > d2 )
for (; d1 != d2; d1-- )
c1 = c1->m_Parent;
else if ( d1 < d2 )
for (; d1 != d2; d2-- )
c2 = c2->m_Parent;
if ( cell == this )
return true;
while ( c1 && c2 )
{
if ( c1->m_Parent == c2->m_Parent )
{
while ( c1 )
{
if ( c1 == c2 )
return true;
c1 = c1->GetNext();
}
return false;
}
else
{
c1 = c1->m_Parent;
c2 = c2->m_Parent;
}
}
wxFAIL_MSG(_T("Cells are in different trees"));
return false;
}
//-----------------------------------------------------------------------------
// wxHtmlWordCell
//-----------------------------------------------------------------------------
wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
{
m_Word = word;
dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
SetCanLiveOnPagebreak(FALSE);
m_allowLinebreak = true;
}
void wxHtmlWordCell::SetPreviousWord(wxHtmlWordCell *cell)
{
if ( cell && m_Parent == cell->m_Parent &&
!wxIsspace(cell->m_Word.Last()) && !wxIsspace(m_Word[0u]) )
{
m_allowLinebreak = false;
}
}
// Splits m_Word into up to three parts according to selection, returns
// substring before, in and after selection and the points (in relative coords)
// where s2 and s3 start:
void wxHtmlWordCell::Split(wxDC& dc,
const wxPoint& selFrom, const wxPoint& selTo,
unsigned& pos1, unsigned& pos2) const
{
wxPoint pt1 = (selFrom == wxDefaultPosition) ?
wxDefaultPosition : selFrom - GetAbsPos();
wxPoint pt2 = (selTo == wxDefaultPosition) ?
wxPoint(m_Width, -1) : selTo - GetAbsPos();
wxCoord charW, charH;
unsigned len = m_Word.length();
unsigned i = 0;
pos1 = 0;
// adjust for cases when the start/end position is completely
// outside the cell:
if ( pt1.y < 0 )
pt1.x = 0;
if ( pt2.y >= m_Height )
pt2.x = m_Width;
// before selection:
while ( pt1.x > 0 && i < len )
{
dc.GetTextExtent(m_Word[i], &charW, &charH);
pt1.x -= charW;
if ( pt1.x >= 0 )
{
pos1 += charW;
i++;
}
}
// in selection:
unsigned j = i;
pos2 = pos1;
pt2.x -= pos2;
while ( pt2.x > 0 && j < len )
{
dc.GetTextExtent(m_Word[j], &charW, &charH);
pt2.x -= charW;
if ( pt2.x >= 0 )
{
pos2 += charW;
j++;
}
}
pos1 = i;
pos2 = j;
}
void wxHtmlWordCell::SetSelectionPrivPos(wxDC& dc, wxHtmlSelection *s) const
{
unsigned p1, p2;
Split(dc,
this == s->GetFromCell() ? s->GetFromPos() : wxDefaultPosition,
this == s->GetToCell() ? s->GetToPos() : wxDefaultPosition,
p1, p2);
wxPoint p(0, m_Word.length());
if ( this == s->GetFromCell() )
p.x = p1; // selection starts here
if ( this == s->GetToCell() )
p.y = p2; // selection ends here
if ( this == s->GetFromCell() )
s->SetFromPrivPos(p);
if ( this == s->GetToCell() )
s->SetToPrivPos(p);
}
static void SwitchSelState(wxDC& dc, wxHtmlRenderingInfo& info,
bool toSelection)
{
wxColour fg = info.GetState().GetFgColour();
wxColour bg = info.GetState().GetBgColour();
if ( toSelection )
{
dc.SetBackgroundMode(wxSOLID);
dc.SetTextForeground(info.GetStyle().GetSelectedTextColour(fg));
dc.SetTextBackground(info.GetStyle().GetSelectedTextBgColour(bg));
dc.SetBackground(wxBrush(info.GetStyle().GetSelectedTextBgColour(bg),
wxSOLID));
}
else
{
dc.SetBackgroundMode(wxTRANSPARENT);
dc.SetTextForeground(fg);
dc.SetTextBackground(bg);
dc.SetBackground(wxBrush(bg, wxSOLID));
}
}
void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
int WXUNUSED(view_y1), int WXUNUSED(view_y2),
wxHtmlRenderingInfo& info)
{
#if 0 // useful for debugging
dc.DrawRectangle(x+m_PosX,y+m_PosY,m_Width,m_Height);
#endif
bool drawSelectionAfterCell = false;
if ( info.GetState().GetSelectionState() == wxHTML_SEL_CHANGING )
{
// Selection changing, we must draw the word piecewise:
wxHtmlSelection *s = info.GetSelection();
wxString txt;
int w, h;
int ofs = 0;
wxPoint priv = (this == s->GetFromCell()) ?
s->GetFromPrivPos() : s->GetToPrivPos();
// NB: this is quite a hack: in order to compute selection boundaries
// (in word's characters) we must know current font, which is only
// possible inside rendering code. Therefore we update the
// information here and store it in wxHtmlSelection so that
// ConvertToText can use it later:
if ( priv == wxDefaultPosition )
{
SetSelectionPrivPos(dc, s);
priv = (this == s->GetFromCell()) ?
s->GetFromPrivPos() : s->GetToPrivPos();
}
int part1 = priv.x;
int part2 = priv.y;
if ( part1 > 0 )
{
txt = m_Word.Mid(0, part1);
dc.DrawText(txt, x + m_PosX, y + m_PosY);
dc.GetTextExtent(txt, &w, &h);
ofs += w;
}
SwitchSelState(dc, info, true);
txt = m_Word.Mid(part1, part2-part1);
dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
if ( (size_t)part2 < m_Word.length() )
{
dc.GetTextExtent(txt, &w, &h);
ofs += w;
SwitchSelState(dc, info, false);
txt = m_Word.Mid(part2);
dc.DrawText(txt, ofs + x + m_PosX, y + m_PosY);
}
else
drawSelectionAfterCell = true;
}
else
{
wxHtmlSelectionState selstate = info.GetState().GetSelectionState();
// Not changing selection state, draw the word in single mode:
if ( selstate != wxHTML_SEL_OUT &&
dc.GetBackgroundMode() != wxSOLID )
{
SwitchSelState(dc, info, true);
}
else if ( selstate == wxHTML_SEL_OUT &&
dc.GetBackgroundMode() == wxSOLID )
{
SwitchSelState(dc, info, false);
}
dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
drawSelectionAfterCell = (selstate != wxHTML_SEL_OUT);
}
// NB: If the text is justified then there is usually some free space
// between adjacent cells and drawing the selection only onto cells
// would result in ugly unselected spaces. The code below detects
// this special case and renders the selection *outside* the sell,
// too.
if ( m_Parent->GetAlignHor() == wxHTML_ALIGN_JUSTIFY &&
drawSelectionAfterCell )
{
wxHtmlCell *nextCell = m_Next;
while ( nextCell && nextCell->IsFormattingCell() )
nextCell = nextCell->GetNext();
if ( nextCell )
{
int nextX = nextCell->GetPosX();
if ( m_PosX + m_Width < nextX )
{
dc.SetBrush(dc.GetBackground());
dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(x + m_PosX + m_Width, y + m_PosY,
nextX - m_PosX - m_Width, m_Height);
}
}
}
}
wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
{
if ( s && (this == s->GetFromCell() || this == s->GetToCell()) )
{
wxPoint priv = this == s->GetFromCell() ? s->GetFromPrivPos()
: s->GetToPrivPos();
// VZ: we may be called before we had a chance to re-render ourselves
// and in this case GetFrom/ToPrivPos() is not set yet -- assume
// that this only happens in case of a double/triple click (which
// seems to be the case now) and so it makes sense to select the
// entire contents of the cell in this case
//
// TODO: but this really needs to be fixed in some better way later...
if ( priv != wxDefaultPosition )
{
int part1 = priv.x;
int part2 = priv.y;
return m_Word.Mid(part1, part2-part1);
}
//else: return the whole word below
}
return m_Word;
}
wxCursor wxHtmlWordCell::GetCursor() const
{
if ( !GetLink() )
{
if ( !gs_cursorText )
gs_cursorText = new wxCursor(wxCURSOR_IBEAM);
return *gs_cursorText;
}
else
return wxHtmlCell::GetCursor();
}
//-----------------------------------------------------------------------------
// 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, int* known_pagebreaks, int number_of_pages) const
{
if (!m_CanLiveOnPagebreak)
return wxHtmlCell::AdjustPagebreak(pagebreak, known_pagebreaks, number_of_pages);
else
{
wxHtmlCell *c = GetFirstChild();
bool rt = FALSE;
int pbrk = *pagebreak - m_PosY;
while (c)
{
if (c->AdjustPagebreak(&pbrk, known_pagebreaks, number_of_pages))
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;
wxHtmlCell *nextCell;
long xpos = 0, ypos = m_IndentTop;
int xdelta = 0, ybasicpos = 0, ydiff;
int s_width, nextWordWidth, 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());
// layout nonbreakable run of cells:
cell->SetPos(xpos, ybasicpos + cell->GetDescent());
xpos += cell->GetWidth();
cell = cell->GetNext();
xcnt++;
// compute length of the next word that would be added:
nextWordWidth = 0;
if (cell)
{
nextCell = cell;
do
{
nextWordWidth += nextCell->GetWidth();
nextCell = nextCell->GetNext();
} while (nextCell && !nextCell->IsLinebreakAllowed());
}
// force new line if occured:
if ((cell == NULL) ||
(xpos + nextWordWidth > s_width && cell->IsLinebreakAllowed()))
{
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;
}
void wxHtmlContainerCell::UpdateRenderingStatePre(wxHtmlRenderingInfo& info,
wxHtmlCell *cell) const
{
wxHtmlSelection *s = info.GetSelection();
if (!s) return;
if (s->GetFromCell() == cell || s->GetToCell() == cell)
{
info.GetState().SetSelectionState(wxHTML_SEL_CHANGING);
}
}
void wxHtmlContainerCell::UpdateRenderingStatePost(wxHtmlRenderingInfo& info,
wxHtmlCell *cell) const
{
wxHtmlSelection *s = info.GetSelection();
if (!s) return;
if (s->GetToCell() == cell)
info.GetState().SetSelectionState(wxHTML_SEL_OUT);
else if (s->GetFromCell() == cell)
info.GetState().SetSelectionState(wxHTML_SEL_IN);
}
#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,
wxHtmlRenderingInfo& info)
{
// 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, 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, y + m_PosY + m_Height - 1);
}
if (m_Cells)
{
// draw container's contents:
for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
{
UpdateRenderingStatePre(info, cell);
cell->Draw(dc,
x + m_PosX, y + m_PosY, view_y1, view_y2,
info);
UpdateRenderingStatePost(info, cell);
}
}
}
// container invisible, just proceed font+color changing:
else
{
DrawInvisible(dc, x, y, info);
}
}
void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y,
wxHtmlRenderingInfo& info)
{
if (m_Cells)
{
for (wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext())
{
UpdateRenderingStatePre(info, cell);
cell->DrawInvisible(dc, x + m_PosX, y + m_PosY, info);
UpdateRenderingStatePost(info, cell);
}
}
}
wxColour wxHtmlContainerCell::GetBackgroundColour()
{
if (m_UseBkColour)
return m_BkColour;
else
return wxNullColour;
}
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,
unsigned flags) const
{
if ( flags & wxHTML_FIND_EXACT )
{
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, flags);
}
}
}
else if ( flags & wxHTML_FIND_NEAREST_AFTER )
{
wxHtmlCell *c;
for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
{
if ( cell->IsFormattingCell() )
continue;
int cellY = cell->GetPosY();
if (!( y < cellY || (y < cellY + cell->GetHeight() &&
x < cell->GetPosX() + cell->GetWidth()) ))
continue;
c = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
if (c) return c;
}
}
else if ( flags & wxHTML_FIND_NEAREST_BEFORE )
{
wxHtmlCell *c2, *c = NULL;
for ( const wxHtmlCell *cell = m_Cells; cell; cell = cell->GetNext() )
{
if ( cell->IsFormattingCell() )
continue;
int cellY = cell->GetPosY();
if (!( cellY + cell->GetHeight() <= y ||
(y >= cellY && x >= cell->GetPosX()) ))
break;
c2 = cell->FindCellByPos(x - cell->GetPosX(), y - cellY, flags);
if (c2)
c = c2;
}
if (c) return c;
}
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);
}
wxHtmlCell *wxHtmlContainerCell::GetFirstTerminal() const
{
if ( m_Cells )
{
wxHtmlCell *c2;
for (wxHtmlCell *c = m_Cells; c; c = c->GetNext())
{
c2 = c->GetFirstTerminal();
if ( c2 )
return c2;
}
}
return NULL;
}
wxHtmlCell *wxHtmlContainerCell::GetLastTerminal() const
{
if ( m_Cells )
{
// most common case first:
wxHtmlCell *c = m_LastCell->GetLastTerminal();
if ( c )
return c;
wxHtmlCell *c2 = NULL;
for (c = m_Cells; c; c = c->GetNext())
c2 = c->GetLastTerminal();
return c2;
}
else
return NULL;
}
// --------------------------------------------------------------------------
// wxHtmlColourCell
// --------------------------------------------------------------------------
void wxHtmlColourCell::Draw(wxDC& dc,
int x, int y,
int WXUNUSED(view_y1), int WXUNUSED(view_y2),
wxHtmlRenderingInfo& info)
{
DrawInvisible(dc, x, y, info);
}
void wxHtmlColourCell::DrawInvisible(wxDC& dc,
int WXUNUSED(x), int WXUNUSED(y),
wxHtmlRenderingInfo& info)
{
wxHtmlRenderingState& state = info.GetState();
if (m_Flags & wxHTML_CLR_FOREGROUND)
{
state.SetFgColour(m_Colour);
if (state.GetSelectionState() != wxHTML_SEL_IN)
dc.SetTextForeground(m_Colour);
else
dc.SetTextForeground(
info.GetStyle().GetSelectedTextColour(m_Colour));
}
if (m_Flags & wxHTML_CLR_BACKGROUND)
{
state.SetBgColour(m_Colour);
if (state.GetSelectionState() != wxHTML_SEL_IN)
{
dc.SetTextBackground(m_Colour);
dc.SetBackground(wxBrush(m_Colour, wxSOLID));
}
else
{
wxColour c = info.GetStyle().GetSelectedTextBgColour(m_Colour);
dc.SetTextBackground(c);
dc.SetBackground(wxBrush(c, wxSOLID));
}
}
}
// ---------------------------------------------------------------------------
// wxHtmlFontCell
// ---------------------------------------------------------------------------
void wxHtmlFontCell::Draw(wxDC& dc,
int WXUNUSED(x), int WXUNUSED(y),
int WXUNUSED(view_y1), int WXUNUSED(view_y2),
wxHtmlRenderingInfo& WXUNUSED(info))
{
dc.SetFont(m_Font);
}
void wxHtmlFontCell::DrawInvisible(wxDC& dc, int WXUNUSED(x), int WXUNUSED(y),
wxHtmlRenderingInfo& WXUNUSED(info))
{
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),
wxHtmlRenderingInfo& WXUNUSED(info))
{
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),
wxHtmlRenderingInfo& WXUNUSED(info))
{
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);
}
// ----------------------------------------------------------------------------
// wxHtmlTerminalCellsInterator
// ----------------------------------------------------------------------------
const wxHtmlCell* wxHtmlTerminalCellsInterator::operator++()
{
if ( !m_pos )
return NULL;
do
{
if ( m_pos == m_to )
{
m_pos = NULL;
return NULL;
}
if ( m_pos->GetNext() )
m_pos = m_pos->GetNext();
else
{
// we must go up the hierarchy until we reach container where this
// is not the last child, and then go down to first terminal cell:
while ( m_pos->GetNext() == NULL )
{
m_pos = m_pos->GetParent();
if ( !m_pos )
return NULL;
}
m_pos = m_pos->GetNext();
}
while ( m_pos->GetFirstChild() != NULL )
m_pos = m_pos->GetFirstChild();
} while ( !m_pos->IsTerminalCell() );
return m_pos;
}
//-----------------------------------------------------------------------------
// Cleanup
//-----------------------------------------------------------------------------
class wxHtmlCellModule: public wxModule
{
DECLARE_DYNAMIC_CLASS(wxHtmlCellModule)
public:
wxHtmlCellModule() : wxModule() {}
bool OnInit() { return true; }
void OnExit()
{
wxDELETE(gs_cursorLink);
wxDELETE(gs_cursorText);
}
};
IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellModule, wxModule)
#endif
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