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9bc8fded1b3e6e20da20c2471aead3d5761a6bcd
wxWidgets/src/html/htmlcell.cpp
Václav Slavík 9bc8fded1b added wxHtmlLinkInfo::GetHtmlCell so that you know where it came from 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5352 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2000-01-12 08:27:07 +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
#endif
#include "wx/wxprec.h"
#include "wx/defs.h"
#if wxUSE_HTML
#ifdef __BORDLANDC__
#pragma hdrstop
#endif
#ifndef WXPRECOMP
#include "wx/wx.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()
{
if (m_Link) delete m_Link;
if (m_Next) delete m_Next;
}
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);
((wxHtmlWindow*)parent) -> OnLinkClicked(lnk2);
// note : this overcasting is legal because parent is *always* wxHtmlWindow
}
}
bool wxHtmlCell::AdjustPagebreak(int *pagebreak)
{
if ((!m_CanLiveOnPagebreak) &&
m_PosY < *pagebreak && m_PosY + m_Height > *pagebreak) {
*pagebreak = m_PosY;
if (m_Next != NULL) m_Next -> AdjustPagebreak(pagebreak);
return TRUE;
}
else {
if (m_Next != NULL) return m_Next -> AdjustPagebreak(pagebreak);
else return FALSE;
}
}
void wxHtmlCell::SetLink(const wxHtmlLinkInfo& link)
{
if (m_Link) delete m_Link;
m_Link = new wxHtmlLinkInfo(link);
}
//-----------------------------------------------------------------------------
// wxHtmlWordCell
//-----------------------------------------------------------------------------
wxHtmlWordCell::wxHtmlWordCell(const wxString& word, wxDC& dc) : wxHtmlCell()
{
m_Word = word;
if (m_Word.Find(wxT('&')) != -1)
{
static wxChar* substitutions[][3] =
{
{ wxT("&nbsp;"), wxT("&nbsp "), wxT(" ") },
{ wxT("&copy;"), wxT("&copy "), wxT("(c)") },
{ wxT("&quot;"), wxT("&quot "), wxT("\"") },
{ wxT("&lt;"), wxT("&lt "), wxT("<") },
{ wxT("&gt;"), wxT("&gt "), wxT(">") },
{ wxT("&amp;"), wxT("&amp "), wxT("&") /*this one should be last one*/ },
{ NULL, NULL, NULL }
};
for (int i = 0; substitutions[i][0] != NULL; i++)
{
m_Word.Replace(substitutions[i][0], substitutions[i][2], TRUE);
m_Word.Replace(substitutions[i][1], substitutions[i][2], TRUE);
}
}
dc.GetTextExtent(m_Word, &m_Width, &m_Height, &m_Descent);
SetCanLiveOnPagebreak(FALSE);
}
void wxHtmlWordCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
{
dc.DrawText(m_Word, x + m_PosX, y + m_PosY);
wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}
//-----------------------------------------------------------------------------
// 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 = m_MaxLineWidth = 0;
m_MinHeightAlign = wxHTML_ALIGN_TOP;
}
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;
}
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)
{
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 *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;
/*
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;
m_Cells -> 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);
m_MaxLineWidth = 0;
// 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();
// force new line if occured:
if ((cell == NULL) || (xpos + cell -> GetWidth() > s_width)) {
if (xpos > m_MaxLineWidth) m_MaxLineWidth = xpos;
if (ysizeup < 0) ysizeup = 0;
if (ysizedown < 0) ysizedown = 0;
switch (m_AlignHor) {
case wxHTML_ALIGN_LEFT : 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;
while (line != cell) {
line -> SetPos(line -> GetPosX() + xdelta, ypos + line -> GetPosY());
line = line -> GetNext();
}
ypos += ysizedown;
xpos = 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;
}
m_MaxLineWidth += s_indent + ((m_IndentRight < 0) ? (-m_IndentRight * m_Width / 100) : m_IndentRight);
if (m_Width < m_MaxLineWidth) m_Width = m_MaxLineWidth;
wxHtmlCell::Layout(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) m_Cells -> Draw(dc, x + m_PosX, y + m_PosY, view_y1, view_y2);
}
// container invisible, just proceed font+color changing:
else {
if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
}
wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}
void wxHtmlContainerCell::DrawInvisible(wxDC& dc, int x, int y)
{
if (m_Cells) m_Cells -> DrawInvisible(dc, x + m_PosX, y + m_PosY);
wxHtmlCell::DrawInvisible(dc, x, y);
}
wxHtmlLinkInfo *wxHtmlContainerCell::GetLink(int x, int y) const
{
wxHtmlCell *c = m_Cells;
int cx, cy, cw, ch;
while (c) {
cx = c -> GetPosX(), cy = c -> GetPosY();
cw = c -> GetWidth(), ch = c -> GetHeight();
if ((x >= cx) && (x < cx + cw) && (y >= cy) && (y < cy + ch))
return c -> GetLink(x - cx, y - cy);
c = c -> GetNext();
}
return 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);
}
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("RIGHT"))
SetAlignHor(wxHTML_ALIGN_RIGHT);
}
}
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);
}
}
}
const wxHtmlCell* wxHtmlContainerCell::Find(int condition, const void* param) const
{
const wxHtmlCell *r = NULL;
if (m_Cells) {
r = m_Cells -> Find(condition, param);
if (r) return r;
}
return wxHtmlCell::Find(condition, param);
}
void wxHtmlContainerCell::OnMouseClick(wxWindow *parent, int x, int y, const wxMouseEvent& event)
{
if (m_Cells) {
wxHtmlCell *c = m_Cells;
while (c) {
if ( (c -> GetPosX() <= x) &&
(c -> GetPosY() <= y) &&
(c -> GetPosX() + c -> GetWidth() > x) &&
(c -> GetPosY() + c -> GetHeight() > y)) {
c -> OnMouseClick(parent, x - c -> GetPosX(), y - c -> GetPosY(), event);
break;
}
c = c -> GetNext();
}
}
}
//--------------------------------------------------------------------------------
// wxHtmlColourCell
//--------------------------------------------------------------------------------
void wxHtmlColourCell::Draw(wxDC& dc, int x, int y, int view_y1, int 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);
}
wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}
void wxHtmlColourCell::DrawInvisible(wxDC& dc, int x, int 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);
}
wxHtmlCell::DrawInvisible(dc, x, y);
}
//--------------------------------------------------------------------------------
// wxHtmlFontCell
//--------------------------------------------------------------------------------
void wxHtmlFontCell::Draw(wxDC& dc, int x, int y, int view_y1, int view_y2)
{
dc.SetFont(m_Font);
wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}
void wxHtmlFontCell::DrawInvisible(wxDC& dc, int x, int y)
{
dc.SetFont(m_Font);
wxHtmlCell::DrawInvisible(dc, x, y);
}
//--------------------------------------------------------------------------------
// 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& dc, int x, int y, int view_y1, int 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())) -> ViewStart(&stx, &sty);
m_Wnd -> SetSize(absx - wxHTML_SCROLL_STEP * stx, absy - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
wxHtmlCell::Draw(dc, x, y, view_y1, view_y2);
}
void wxHtmlWidgetCell::DrawInvisible(wxDC& dc, int x, int 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())) -> ViewStart(&stx, &sty);
m_Wnd -> SetSize(absx - wxHTML_SCROLL_STEP * stx, absy - wxHTML_SCROLL_STEP * sty, m_Width, m_Height);
wxHtmlCell::DrawInvisible(dc, x, y);
}
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
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