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009124642747a65f459ebc20b987c7ee67df9a5e
wxWidgets/src/html/htmlwin.cpp
Vadim Zeitlin 0f60be60a2 Don't leave wxHtmlWinParser with a dangling wxDC pointer. 
Call SetDC(NULL) to prevent wxHtmlWinParser from using a pointer to the
already destroyed wxDC object.

See #16501.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77504 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2014-08-29 11:56:33 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/html/htmlwin.cpp
// Purpose: wxHtmlWindow class for parsing & displaying HTML (implementation)
// Author: Vaclav Slavik
// Copyright: (c) 1999 Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_HTML && wxUSE_STREAMS
#ifndef WX_PRECOMP
#include "wx/list.h"
#include "wx/log.h"
#include "wx/intl.h"
#include "wx/dcclient.h"
#include "wx/frame.h"
#include "wx/dcmemory.h"
#include "wx/timer.h"
#include "wx/settings.h"
#include "wx/dataobj.h"
#include "wx/statusbr.h"
#endif
#include "wx/html/htmlwin.h"
#include "wx/html/htmlproc.h"
#include "wx/clipbrd.h"
#include "wx/recguard.h"
#include "wx/arrimpl.cpp"
#include "wx/listimpl.cpp"
// uncomment this line to visually show the extent of the selection
//#define DEBUG_HTML_SELECTION
// HTML events:
IMPLEMENT_DYNAMIC_CLASS(wxHtmlLinkEvent, wxCommandEvent)
IMPLEMENT_DYNAMIC_CLASS(wxHtmlCellEvent, wxCommandEvent)
wxDEFINE_EVENT( wxEVT_HTML_CELL_CLICKED, wxHtmlCellEvent );
wxDEFINE_EVENT( wxEVT_HTML_CELL_HOVER, wxHtmlCellEvent );
wxDEFINE_EVENT( wxEVT_HTML_LINK_CLICKED, wxHtmlLinkEvent );
#if wxUSE_CLIPBOARD
// ----------------------------------------------------------------------------
// wxHtmlWinAutoScrollTimer: the timer used to generate a stream of scroll
// events when a captured mouse is held outside the window
// ----------------------------------------------------------------------------
class wxHtmlWinAutoScrollTimer : public wxTimer
{
public:
wxHtmlWinAutoScrollTimer(wxScrolledWindow *win,
wxEventType eventTypeToSend,
int pos, int orient)
{
m_win = win;
m_eventType = eventTypeToSend;
m_pos = pos;
m_orient = orient;
}
virtual void Notify() wxOVERRIDE;
private:
wxScrolledWindow *m_win;
wxEventType m_eventType;
int m_pos,
m_orient;
wxDECLARE_NO_COPY_CLASS(wxHtmlWinAutoScrollTimer);
};
void wxHtmlWinAutoScrollTimer::Notify()
{
// only do all this as long as the window is capturing the mouse
if ( wxWindow::GetCapture() != m_win )
{
Stop();
}
else // we still capture the mouse, continue generating events
{
// first scroll the window if we are allowed to do it
wxScrollWinEvent event1(m_eventType, m_pos, m_orient);
event1.SetEventObject(m_win);
if ( m_win->GetEventHandler()->ProcessEvent(event1) )
{
// and then send a pseudo mouse-move event to refresh the selection
wxMouseEvent event2(wxEVT_MOTION);
wxGetMousePosition(&event2.m_x, &event2.m_y);
// the mouse event coordinates should be client, not screen as
// returned by wxGetMousePosition
wxWindow *parentTop = m_win;
while ( parentTop->GetParent() )
parentTop = parentTop->GetParent();
wxPoint ptOrig = parentTop->GetPosition();
event2.m_x -= ptOrig.x;
event2.m_y -= ptOrig.y;
event2.SetEventObject(m_win);
// FIXME: we don't fill in the other members - ok?
m_win->GetEventHandler()->ProcessEvent(event2);
}
else // can't scroll further, stop
{
Stop();
}
}
}
#endif // wxUSE_CLIPBOARD
//-----------------------------------------------------------------------------
// wxHtmlHistoryItem
//-----------------------------------------------------------------------------
// item of history list
class WXDLLIMPEXP_HTML wxHtmlHistoryItem
{
public:
wxHtmlHistoryItem(const wxString& p, const wxString& a) {m_Page = p, m_Anchor = a, m_Pos = 0;}
int GetPos() const {return m_Pos;}
void SetPos(int p) {m_Pos = p;}
const wxString& GetPage() const {return m_Page;}
const wxString& GetAnchor() const {return m_Anchor;}
private:
wxString m_Page;
wxString m_Anchor;
int m_Pos;
};
//-----------------------------------------------------------------------------
// our private arrays:
//-----------------------------------------------------------------------------
WX_DECLARE_OBJARRAY(wxHtmlHistoryItem, wxHtmlHistoryArray);
WX_DEFINE_OBJARRAY(wxHtmlHistoryArray)
WX_DECLARE_LIST(wxHtmlProcessor, wxHtmlProcessorList);
WX_DEFINE_LIST(wxHtmlProcessorList)
//-----------------------------------------------------------------------------
// wxHtmlWindowMouseHelper
//-----------------------------------------------------------------------------
wxHtmlWindowMouseHelper::wxHtmlWindowMouseHelper(wxHtmlWindowInterface *iface)
: m_tmpMouseMoved(false),
m_tmpLastLink(NULL),
m_tmpLastCell(NULL),
m_interface(iface)
{
}
void wxHtmlWindowMouseHelper::HandleMouseMoved()
{
m_tmpMouseMoved = true;
}
bool wxHtmlWindowMouseHelper::HandleMouseClick(wxHtmlCell *rootCell,
const wxPoint& pos,
const wxMouseEvent& event)
{
if (!rootCell)
return false;
wxHtmlCell *cell = rootCell->FindCellByPos(pos.x, pos.y);
// this check is needed because FindCellByPos returns terminal cell and
// containers may have empty borders -- in this case NULL will be
// returned
if (!cell)
return false;
// adjust the coordinates to be relative to this cell:
wxPoint relpos = pos - cell->GetAbsPos(rootCell);
return OnCellClicked(cell, relpos.x, relpos.y, event);
}
void wxHtmlWindowMouseHelper::HandleIdle(wxHtmlCell *rootCell,
const wxPoint& pos)
{
wxHtmlCell *cell = rootCell ? rootCell->FindCellByPos(pos.x, pos.y) : NULL;
if (cell != m_tmpLastCell)
{
wxHtmlLinkInfo *lnk = NULL;
if (cell)
{
// adjust the coordinates to be relative to this cell:
wxPoint relpos = pos - cell->GetAbsPos(rootCell);
lnk = cell->GetLink(relpos.x, relpos.y);
}
wxCursor cur;
if (cell)
cur = cell->GetMouseCursorAt(m_interface, pos);
else
cur = m_interface->GetHTMLCursor(
wxHtmlWindowInterface::HTMLCursor_Default);
m_interface->GetHTMLWindow()->SetCursor(cur);
if (lnk != m_tmpLastLink)
{
if (lnk)
m_interface->SetHTMLStatusText(lnk->GetHref());
else
m_interface->SetHTMLStatusText(wxEmptyString);
m_tmpLastLink = lnk;
}
m_tmpLastCell = cell;
}
else // mouse moved but stayed in the same cell
{
if ( cell )
{
// A single cell can have different cursors for different positions,
// so update cursor for this case as well.
wxCursor cur = cell->GetMouseCursorAt(m_interface, pos);
m_interface->GetHTMLWindow()->SetCursor(cur);
OnCellMouseHover(cell, pos.x, pos.y);
}
}
m_tmpMouseMoved = false;
}
bool wxHtmlWindowMouseHelper::OnCellClicked(wxHtmlCell *cell,
wxCoord x, wxCoord y,
const wxMouseEvent& event)
{
wxHtmlCellEvent ev(wxEVT_HTML_CELL_CLICKED,
m_interface->GetHTMLWindow()->GetId(),
cell, wxPoint(x,y), event);
if (!m_interface->GetHTMLWindow()->GetEventHandler()->ProcessEvent(ev))
{
// if the event wasn't handled, do the default processing here:
wxASSERT_MSG( cell, wxT("can't be called with NULL cell") );
// If we don't return true, HTML listboxes will always think that they should take
// the focus
if (cell->ProcessMouseClick(m_interface, ev.GetPoint(), ev.GetMouseEvent()))
return true;
}
// true if a link was clicked, false otherwise
return ev.GetLinkClicked();
}
void wxHtmlWindowMouseHelper::OnCellMouseHover(wxHtmlCell * cell,
wxCoord x,
wxCoord y)
{
wxHtmlCellEvent ev(wxEVT_HTML_CELL_HOVER,
m_interface->GetHTMLWindow()->GetId(),
cell, wxPoint(x,y), wxMouseEvent());
m_interface->GetHTMLWindow()->GetEventHandler()->ProcessEvent(ev);
}
//-----------------------------------------------------------------------------
// wxHtmlWindow
//-----------------------------------------------------------------------------
wxList wxHtmlWindow::m_Filters;
wxHtmlFilter *wxHtmlWindow::m_DefaultFilter = NULL;
wxHtmlProcessorList *wxHtmlWindow::m_GlobalProcessors = NULL;
wxCursor *wxHtmlWindow::ms_cursorLink = NULL;
wxCursor *wxHtmlWindow::ms_cursorText = NULL;
wxCursor *wxHtmlWindow::ms_cursorDefault = NULL;
void wxHtmlWindow::CleanUpStatics()
{
wxDELETE(m_DefaultFilter);
WX_CLEAR_LIST(wxList, m_Filters);
if (m_GlobalProcessors)
WX_CLEAR_LIST(wxHtmlProcessorList, *m_GlobalProcessors);
wxDELETE(m_GlobalProcessors);
wxDELETE(ms_cursorLink);
wxDELETE(ms_cursorText);
wxDELETE(ms_cursorDefault);
}
void wxHtmlWindow::Init()
{
m_tmpCanDrawLocks = 0;
m_FS = new wxFileSystem();
#if wxUSE_STATUSBAR
m_RelatedStatusBar = NULL;
m_RelatedStatusBarIndex = -1;
#endif // wxUSE_STATUSBAR
m_RelatedFrame = NULL;
m_TitleFormat = wxT("%s");
m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
m_Cell = NULL;
m_Parser = new wxHtmlWinParser(this);
m_Parser->SetFS(m_FS);
m_HistoryPos = -1;
m_HistoryOn = true;
m_History = new wxHtmlHistoryArray;
m_Processors = NULL;
SetBorders(10);
m_selection = NULL;
m_makingSelection = false;
#if wxUSE_CLIPBOARD
m_timerAutoScroll = NULL;
m_lastDoubleClick = 0;
#endif // wxUSE_CLIPBOARD
m_tmpSelFromCell = NULL;
}
bool wxHtmlWindow::Create(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size,
long style, const wxString& name)
{
if (!wxScrolledWindow::Create(parent, id, pos, size,
style | wxVSCROLL | wxHSCROLL,
name))
return false;
// We can't erase our background in EVT_ERASE_BACKGROUND handler and use
// double buffering in EVT_PAINT handler as this requires blitting back
// something already drawn on the window to the backing store bitmap when
// handling EVT_PAINT but blitting in this direction is simply not
// supported by OS X.
//
// So instead we use a hack with artificial EVT_ERASE_BACKGROUND generation
// from OnPaint() and this means that we never need the "real" erase event
// at all so disable it to avoid executing any user-defined handlers twice
// (and to avoid processing unnecessary event if no handlers are defined).
SetBackgroundStyle(wxBG_STYLE_PAINT);
SetPage(wxT("<html><body></body></html>"));
SetInitialSize(size);
return true;
}
wxHtmlWindow::~wxHtmlWindow()
{
#if wxUSE_CLIPBOARD
StopAutoScrolling();
#endif // wxUSE_CLIPBOARD
HistoryClear();
delete m_selection;
delete m_Cell;
if ( m_Processors )
{
WX_CLEAR_LIST(wxHtmlProcessorList, *m_Processors);
}
delete m_Parser;
delete m_FS;
delete m_History;
delete m_Processors;
}
void wxHtmlWindow::SetRelatedFrame(wxFrame* frame, const wxString& format)
{
m_RelatedFrame = frame;
m_TitleFormat = format;
// Check if the format provided can actually be used: it's more
// user-friendly to do it here and now rather than triggering the same
// assert much later when it's really used.
// If you get an assert here, it means that the title doesn't contain
// exactly one "%s" format specifier, which is an error in the caller.
wxString::Format(m_TitleFormat, wxString());
}
#if wxUSE_STATUSBAR
void wxHtmlWindow::SetRelatedStatusBar(int index)
{
m_RelatedStatusBarIndex = index;
}
void wxHtmlWindow::SetRelatedStatusBar(wxStatusBar* statusbar, int index)
{
m_RelatedStatusBar = statusbar;
m_RelatedStatusBarIndex = index;
}
#endif // wxUSE_STATUSBAR
void wxHtmlWindow::SetFonts(const wxString& normal_face, const wxString& fixed_face, const int *sizes)
{
m_Parser->SetFonts(normal_face, fixed_face, sizes);
// re-layout the page after changing fonts:
DoSetPage(*(m_Parser->GetSource()));
}
void wxHtmlWindow::SetStandardFonts(int size,
const wxString& normal_face,
const wxString& fixed_face)
{
m_Parser->SetStandardFonts(size, normal_face, fixed_face);
// re-layout the page after changing fonts:
DoSetPage(*(m_Parser->GetSource()));
}
bool wxHtmlWindow::SetPage(const wxString& source)
{
m_OpenedPage = m_OpenedAnchor = m_OpenedPageTitle = wxEmptyString;
return DoSetPage(source);
}
bool wxHtmlWindow::DoSetPage(const wxString& source)
{
wxString newsrc(source);
wxDELETE(m_selection);
// we will soon delete all the cells, so clear pointers to them:
m_tmpSelFromCell = NULL;
// pass HTML through registered processors:
if (m_Processors || m_GlobalProcessors)
{
wxHtmlProcessorList::compatibility_iterator nodeL, nodeG;
int prL, prG;
if ( m_Processors )
nodeL = m_Processors->GetFirst();
if ( m_GlobalProcessors )
nodeG = m_GlobalProcessors->GetFirst();
// VS: there are two lists, global and local, both of them sorted by
// priority. Since we have to go through _both_ lists with
// decreasing priority, we "merge-sort" the lists on-line by
// processing that one of the two heads that has higher priority
// in every iteration
while (nodeL || nodeG)
{
prL = (nodeL) ? nodeL->GetData()->GetPriority() : -1;
prG = (nodeG) ? nodeG->GetData()->GetPriority() : -1;
if (prL > prG)
{
if (nodeL->GetData()->IsEnabled())
newsrc = nodeL->GetData()->Process(newsrc);
nodeL = nodeL->GetNext();
}
else // prL <= prG
{
if (nodeG->GetData()->IsEnabled())
newsrc = nodeG->GetData()->Process(newsrc);
nodeG = nodeG->GetNext();
}
}
}
// ...and run the parser on it:
wxClientDC dc(this);
dc.SetMapMode(wxMM_TEXT);
SetBackgroundColour(wxColour(0xFF, 0xFF, 0xFF));
SetBackgroundImage(wxNullBitmap);
m_Parser->SetDC(&dc);
// notice that it's important to set m_Cell to NULL here before calling
// Parse() below, even if it will be overwritten by its return value as
// without this we may crash if it's used from inside Parse(), so use
// wxDELETE() and not just delete here
wxDELETE(m_Cell);
m_Cell = (wxHtmlContainerCell*) m_Parser->Parse(newsrc);
// The parser doesn't need the DC any more, so ensure it's not left with a
// dangling pointer after the DC object goes out of scope.
m_Parser->SetDC(NULL);
m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
m_Cell->SetAlignHor(wxHTML_ALIGN_CENTER);
CreateLayout();
if (m_tmpCanDrawLocks == 0)
Refresh();
return true;
}
bool wxHtmlWindow::AppendToPage(const wxString& source)
{
return DoSetPage(*(GetParser()->GetSource()) + source);
}
bool wxHtmlWindow::LoadPage(const wxString& location)
{
wxCHECK_MSG( !location.empty(), false, "location must be non-empty" );
wxBusyCursor busyCursor;
bool rt_val;
bool needs_refresh = false;
m_tmpCanDrawLocks++;
if (m_HistoryOn && (m_HistoryPos != -1))
{
// store scroll position into history item:
int x, y;
GetViewStart(&x, &y);
(*m_History)[m_HistoryPos].SetPos(y);
}
// first check if we're moving to an anchor in the same page
size_t posLocalAnchor = location.Find('#');
if ( posLocalAnchor != wxString::npos && posLocalAnchor != 0 )
{
// check if the part before the anchor is the same as the (either
// relative or absolute) URI of the current page
const wxString beforeAnchor = location.substr(0, posLocalAnchor);
if ( beforeAnchor != m_OpenedPage &&
m_FS->GetPath() + beforeAnchor != m_OpenedPage )
{
// indicate that we're not moving to a local anchor
posLocalAnchor = wxString::npos;
}
}
if ( posLocalAnchor != wxString::npos )
{
m_tmpCanDrawLocks--;
rt_val = ScrollToAnchor(location.substr(posLocalAnchor + 1));
m_tmpCanDrawLocks++;
}
else // moving to another page
{
needs_refresh = true;
#if wxUSE_STATUSBAR
// load&display it:
if (m_RelatedStatusBarIndex != -1)
{
SetHTMLStatusText(_("Connecting..."));
Refresh(false);
}
#endif // wxUSE_STATUSBAR
wxFSFile *f = m_Parser->OpenURL(wxHTML_URL_PAGE, location);
// try to interpret 'location' as filename instead of URL:
if (f == NULL)
{
wxFileName fn(location);
wxString location2 = wxFileSystem::FileNameToURL(fn);
f = m_Parser->OpenURL(wxHTML_URL_PAGE, location2);
}
if (f == NULL)
{
wxLogError(_("Unable to open requested HTML document: %s"), location.c_str());
m_tmpCanDrawLocks--;
SetHTMLStatusText(wxEmptyString);
return false;
}
else
{
wxList::compatibility_iterator node;
wxString src = wxEmptyString;
#if wxUSE_STATUSBAR
if (m_RelatedStatusBarIndex != -1)
{
wxString msg = _("Loading : ") + location;
SetHTMLStatusText(msg);
Refresh(false);
}
#endif // wxUSE_STATUSBAR
node = m_Filters.GetFirst();
while (node)
{
wxHtmlFilter *h = (wxHtmlFilter*) node->GetData();
if (h->CanRead(*f))
{
src = h->ReadFile(*f);
break;
}
node = node->GetNext();
}
if (src == wxEmptyString)
{
if (m_DefaultFilter == NULL) m_DefaultFilter = GetDefaultFilter();
src = m_DefaultFilter->ReadFile(*f);
}
m_FS->ChangePathTo(f->GetLocation());
rt_val = SetPage(src);
m_OpenedPage = f->GetLocation();
if (f->GetAnchor() != wxEmptyString)
{
ScrollToAnchor(f->GetAnchor());
}
delete f;
#if wxUSE_STATUSBAR
if (m_RelatedStatusBarIndex != -1)
{
SetHTMLStatusText(_("Done"));
}
#endif // wxUSE_STATUSBAR
}
}
if (m_HistoryOn) // add this page to history there:
{
int c = m_History->GetCount() - (m_HistoryPos + 1);
if (m_HistoryPos < 0 ||
(*m_History)[m_HistoryPos].GetPage() != m_OpenedPage ||
(*m_History)[m_HistoryPos].GetAnchor() != m_OpenedAnchor)
{
m_HistoryPos++;
for (int i = 0; i < c; i++)
m_History->RemoveAt(m_HistoryPos);
m_History->Add(new wxHtmlHistoryItem(m_OpenedPage, m_OpenedAnchor));
}
}
if (m_OpenedPageTitle == wxEmptyString)
OnSetTitle(wxFileNameFromPath(m_OpenedPage));
if (needs_refresh)
{
m_tmpCanDrawLocks--;
Refresh();
}
else
m_tmpCanDrawLocks--;
return rt_val;
}
bool wxHtmlWindow::LoadFile(const wxFileName& filename)
{
wxString url = wxFileSystem::FileNameToURL(filename);
return LoadPage(url);
}
bool wxHtmlWindow::ScrollToAnchor(const wxString& anchor)
{
const wxHtmlCell *c = m_Cell->Find(wxHTML_COND_ISANCHOR, &anchor);
if (!c)
{
wxLogWarning(_("HTML anchor %s does not exist."), anchor.c_str());
return false;
}
else
{
// Go to next visible cell in current container, if it exists. This
// yields a bit better (even though still imperfect) results in that
// there's better chance of using a suitable cell for upper Y
// coordinate value. See bug #11406 for additional discussion.
const wxHtmlCell *c_save = c;
while ( c && c->IsFormattingCell() )
c = c->GetNext();
if ( !c )
c = c_save;
int y;
for (y = 0; c != NULL; c = c->GetParent()) y += c->GetPosY();
Scroll(-1, y / wxHTML_SCROLL_STEP);
m_OpenedAnchor = anchor;
return true;
}
}
void wxHtmlWindow::OnSetTitle(const wxString& title)
{
if (m_RelatedFrame)
{
wxString tit;
tit.Printf(m_TitleFormat, title.c_str());
m_RelatedFrame->SetTitle(tit);
}
m_OpenedPageTitle = title;
}
// return scroll steps such that a) scrollbars aren't shown needlessly
// and b) entire content is viewable (i.e. round up)
static int ScrollSteps(int size, int available)
{
if ( size <= available )
return 0;
else
return (size + wxHTML_SCROLL_STEP - 1) / wxHTML_SCROLL_STEP;
}
void wxHtmlWindow::CreateLayout()
{
// SetScrollbars() results in size change events -- and thus a nested
// CreateLayout() call -- on some platforms. Ignore nested calls, toplevel
// CreateLayout() will do the right thing eventually.
static wxRecursionGuardFlag s_flagReentrancy;
wxRecursionGuard guard(s_flagReentrancy);
if ( guard.IsInside() )
return;
if (!m_Cell)
return;
int clientWidth, clientHeight;
GetClientSize(&clientWidth, &clientHeight);
const int vscrollbar = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
const int hscrollbar = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
if ( HasScrollbar(wxHORIZONTAL) )
clientHeight += hscrollbar;
if ( HasScrollbar(wxVERTICAL) )
clientWidth += vscrollbar;
if ( HasFlag(wxHW_SCROLLBAR_NEVER) )
{
SetScrollbars(1, 1, 0, 0); // always off
m_Cell->Layout(clientWidth);
}
else // !wxHW_SCROLLBAR_NEVER
{
// Lay the content out with the assumption that it's too large to fit
// in the window (this is likely to be the case):
m_Cell->Layout(clientWidth - vscrollbar);
// If the layout is wider than the window, horizontal scrollbar will
// certainly be shown. Account for it here for subsequent computations.
if ( m_Cell->GetWidth() > clientWidth )
clientHeight -= hscrollbar;
if ( m_Cell->GetHeight() <= clientHeight )
{
// we fit into the window, hide vertical scrollbar:
SetScrollbars
(
wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
ScrollSteps(m_Cell->GetWidth(), clientWidth - vscrollbar),
0
);
// ...and redo the layout to use the extra space
m_Cell->Layout(clientWidth);
}
else
{
// If the content doesn't fit into the window by only a small
// margin, chances are that it may fit fully with scrollbar turned
// off. It's something worth trying but on the other hand, we don't
// want to waste too much time redoing the layout (twice!) for
// long -- and thus expensive to layout -- pages. The cut-off value
// is an arbitrary heuristics.
static const int SMALL_OVERLAP = 60;
if ( m_Cell->GetHeight() <= clientHeight + SMALL_OVERLAP )
{
m_Cell->Layout(clientWidth);
if ( m_Cell->GetHeight() <= clientHeight )
{
// Great, we fit in. Hide the scrollbar.
SetScrollbars
(
wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
ScrollSteps(m_Cell->GetWidth(), clientWidth),
0
);
return;
}
else
{
// That didn't work out, go back to previous layout. Note
// that redoing the layout once again here isn't as bad as
// it looks -- thanks to the small cut-off value, it's a
// reasonably small page.
m_Cell->Layout(clientWidth - vscrollbar);
}
}
// else: the page is very long, it will certainly need scrollbar
SetScrollbars
(
wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
ScrollSteps(m_Cell->GetWidth(), clientWidth - vscrollbar),
ScrollSteps(m_Cell->GetHeight(), clientHeight)
);
}
}
}
#if wxUSE_CONFIG
void wxHtmlWindow::ReadCustomization(wxConfigBase *cfg, wxString path)
{
wxString oldpath;
wxString tmp;
int p_fontsizes[7];
wxString p_fff, p_ffn;
if (path != wxEmptyString)
{
oldpath = cfg->GetPath();
cfg->SetPath(path);
}
m_Borders = cfg->Read(wxT("wxHtmlWindow/Borders"), m_Borders);
p_fff = cfg->Read(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
p_ffn = cfg->Read(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
for (int i = 0; i < 7; i++)
{
tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
p_fontsizes[i] = cfg->Read(tmp, m_Parser->m_FontsSizes[i]);
}
SetFonts(p_ffn, p_fff, p_fontsizes);
if (path != wxEmptyString)
cfg->SetPath(oldpath);
}
void wxHtmlWindow::WriteCustomization(wxConfigBase *cfg, wxString path)
{
wxString oldpath;
wxString tmp;
if (path != wxEmptyString)
{
oldpath = cfg->GetPath();
cfg->SetPath(path);
}
cfg->Write(wxT("wxHtmlWindow/Borders"), (long) m_Borders);
cfg->Write(wxT("wxHtmlWindow/FontFaceFixed"), m_Parser->m_FontFaceFixed);
cfg->Write(wxT("wxHtmlWindow/FontFaceNormal"), m_Parser->m_FontFaceNormal);
for (int i = 0; i < 7; i++)
{
tmp.Printf(wxT("wxHtmlWindow/FontsSize%i"), i);
cfg->Write(tmp, (long) m_Parser->m_FontsSizes[i]);
}
if (path != wxEmptyString)
cfg->SetPath(oldpath);
}
#endif // wxUSE_CONFIG
bool wxHtmlWindow::HistoryBack()
{
wxString a, l;
if (m_HistoryPos < 1) return false;
// store scroll position into history item:
int x, y;
GetViewStart(&x, &y);
(*m_History)[m_HistoryPos].SetPos(y);
// go to previous position:
m_HistoryPos--;
l = (*m_History)[m_HistoryPos].GetPage();
a = (*m_History)[m_HistoryPos].GetAnchor();
m_HistoryOn = false;
m_tmpCanDrawLocks++;
if (a == wxEmptyString) LoadPage(l);
else LoadPage(l + wxT("#") + a);
m_HistoryOn = true;
m_tmpCanDrawLocks--;
Scroll(0, (*m_History)[m_HistoryPos].GetPos());
Refresh();
return true;
}
bool wxHtmlWindow::HistoryCanBack()
{
if (m_HistoryPos < 1) return false;
return true ;
}
bool wxHtmlWindow::HistoryForward()
{
wxString a, l;
if (m_HistoryPos == -1) return false;
if (m_HistoryPos >= (int)m_History->GetCount() - 1)return false;
m_OpenedPage = wxEmptyString; // this will disable adding new entry into history in LoadPage()
m_HistoryPos++;
l = (*m_History)[m_HistoryPos].GetPage();
a = (*m_History)[m_HistoryPos].GetAnchor();
m_HistoryOn = false;
m_tmpCanDrawLocks++;
if (a == wxEmptyString) LoadPage(l);
else LoadPage(l + wxT("#") + a);
m_HistoryOn = true;
m_tmpCanDrawLocks--;
Scroll(0, (*m_History)[m_HistoryPos].GetPos());
Refresh();
return true;
}
bool wxHtmlWindow::HistoryCanForward()
{
if (m_HistoryPos == -1) return false;
if (m_HistoryPos >= (int)m_History->GetCount() - 1)return false;
return true ;
}
void wxHtmlWindow::HistoryClear()
{
m_History->Empty();
m_HistoryPos = -1;
}
void wxHtmlWindow::AddProcessor(wxHtmlProcessor *processor)
{
if (!m_Processors)
{
m_Processors = new wxHtmlProcessorList;
}
wxHtmlProcessorList::compatibility_iterator node;
for (node = m_Processors->GetFirst(); node; node = node->GetNext())
{
if (processor->GetPriority() > node->GetData()->GetPriority())
{
m_Processors->Insert(node, processor);
return;
}
}
m_Processors->Append(processor);
}
/*static */ void wxHtmlWindow::AddGlobalProcessor(wxHtmlProcessor *processor)
{
if (!m_GlobalProcessors)
{
m_GlobalProcessors = new wxHtmlProcessorList;
}
wxHtmlProcessorList::compatibility_iterator node;
for (node = m_GlobalProcessors->GetFirst(); node; node = node->GetNext())
{
if (processor->GetPriority() > node->GetData()->GetPriority())
{
m_GlobalProcessors->Insert(node, processor);
return;
}
}
m_GlobalProcessors->Append(processor);
}
void wxHtmlWindow::AddFilter(wxHtmlFilter *filter)
{
m_Filters.Append(filter);
}
bool wxHtmlWindow::IsSelectionEnabled() const
{
#if wxUSE_CLIPBOARD
return !HasFlag(wxHW_NO_SELECTION);
#else
return false;
#endif
}
#if wxUSE_CLIPBOARD
wxString wxHtmlWindow::DoSelectionToText(wxHtmlSelection *sel)
{
if ( !sel )
return wxEmptyString;
wxClientDC dc(this);
wxString text;
wxHtmlTerminalCellsInterator i(sel->GetFromCell(), sel->GetToCell());
const wxHtmlCell *prev = NULL;
while ( i )
{
// When converting HTML content to plain text, the entire paragraph
// (container in wxHTML) goes on single line. A new paragraph (that
// should go on its own line) has its own container. Therefore, the
// simplest way of detecting where to insert newlines in plain text
// is to check if the parent container changed -- if it did, we moved
// to a new paragraph.
if ( prev && prev->GetParent() != i->GetParent() )
text << '\n';
// NB: we don't need to pass the selection to ConvertToText() in the
// middle of the selected text; it's only useful when only part of
// a cell is selected
text << i->ConvertToText(sel);
prev = *i;
++i;
}
return text;
}
wxString wxHtmlWindow::ToText()
{
if (m_Cell)
{
wxHtmlSelection sel;
sel.Set(m_Cell->GetFirstTerminal(), m_Cell->GetLastTerminal());
return DoSelectionToText(&sel);
}
else
return wxEmptyString;
}
#endif // wxUSE_CLIPBOARD
bool wxHtmlWindow::CopySelection(ClipboardType t)
{
#if wxUSE_CLIPBOARD
if ( m_selection )
{
#if defined(__UNIX__) && !defined(__WXMAC__)
wxTheClipboard->UsePrimarySelection(t == Primary);
#else // !__UNIX__
// Primary selection exists only under X11, so don't do anything under
// the other platforms when we try to access it
//
// TODO: this should be abstracted at wxClipboard level!
if ( t == Primary )
return false;
#endif // __UNIX__/!__UNIX__
if ( wxTheClipboard->Open() )
{
const wxString txt(SelectionToText());
wxTheClipboard->SetData(new wxTextDataObject(txt));
wxTheClipboard->Close();
wxLogTrace(wxT("wxhtmlselection"),
_("Copied to clipboard:\"%s\""), txt.c_str());
return true;
}
}
#else
wxUnusedVar(t);
#endif // wxUSE_CLIPBOARD
return false;
}
void wxHtmlWindow::OnLinkClicked(const wxHtmlLinkInfo& link)
{
wxHtmlLinkEvent event(GetId(), link);
event.SetEventObject(this);
if (!GetEventHandler()->ProcessEvent(event))
{
// the default behaviour is to load the URL in this window
const wxMouseEvent *e = event.GetLinkInfo().GetEvent();
if (e == NULL || e->LeftUp())
LoadPage(event.GetLinkInfo().GetHref());
}
}
void wxHtmlWindow::DoEraseBackground(wxDC& dc)
{
// if we don't have any background bitmap we just fill it with background
// colour and we also must do it if the background bitmap is not fully
// opaque as otherwise junk could be left there
if ( !m_bmpBg.IsOk() || m_bmpBg.GetMask() )
{
dc.SetBackground(GetBackgroundColour());
dc.Clear();
}
if ( m_bmpBg.IsOk() )
{
// draw the background bitmap tiling it over the entire window area
const wxSize sz = GetVirtualSize();
const wxSize sizeBmp(m_bmpBg.GetWidth(), m_bmpBg.GetHeight());
for ( wxCoord x = 0; x < sz.x; x += sizeBmp.x )
{
for ( wxCoord y = 0; y < sz.y; y += sizeBmp.y )
{
dc.DrawBitmap(m_bmpBg, x, y, true /* use mask */);
}
}
}
}
void wxHtmlWindow::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
{
// We never get real erase background events as we changed our background
// style to wxBG_STYLE_PAINT in our ctor so the only time when we get here
// is when an artificial wxEraseEvent is generated by our own OnPaint()
// below. This handler only exists to stop the event from propagating
// downwards to wxWindow which may erase the background itself when it gets
// it in some ports (currently this happens in wxUniv), so we simply stop
// processing here and set a special flag allowing OnPaint() to see that
// the event hadn't been really processed.
m_isBgReallyErased = false;
}
void wxHtmlWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dcPaint(this);
if (m_tmpCanDrawLocks > 0 || m_Cell == NULL)
return;
int x, y;
GetViewStart(&x, &y);
const wxRect rect = GetUpdateRegion().GetBox();
const wxSize sz = GetClientSize();
// set up the DC we're drawing on: if the window is already double buffered
// we do it directly on wxPaintDC, otherwise we allocate a backing store
// buffer and compose the drawing there and then blit it to screen all at
// once
wxDC *dc;
wxMemoryDC dcm;
if ( IsDoubleBuffered() )
{
dc = &dcPaint;
}
else // window is not double buffered by the system, do it ourselves
{
if ( !m_backBuffer.IsOk() )
m_backBuffer.Create(sz.x, sz.y);
dcm.SelectObject(m_backBuffer);
dc = &dcm;
}
PrepareDC(*dc);
// Erase the background: for compatibility, we must generate the event to
// allow the user-defined handlers to do it, hence this hack with sending
// an artificial wxEraseEvent to trigger the execution of such handlers.
wxEraseEvent eraseEvent(GetId(), dc);
eraseEvent.SetEventObject(this);
// Hack inside a hack: the background wasn't really erased if our own
// OnEraseBackground() was executed, so we need to check for the flag set
// by it whenever it's called.
m_isBgReallyErased = true; // Initially assume it wasn't.
if ( !ProcessWindowEvent(eraseEvent) || !m_isBgReallyErased )
{
// erase background ourselves
DoEraseBackground(*dc);
}
//else: background erased by the user-defined handler
// draw the HTML window contents
dc->SetMapMode(wxMM_TEXT);
dc->SetBackgroundMode(wxTRANSPARENT);
dc->SetLayoutDirection(GetLayoutDirection());
wxHtmlRenderingInfo rinfo;
wxDefaultHtmlRenderingStyle rstyle;
rinfo.SetSelection(m_selection);
rinfo.SetStyle(&rstyle);
m_Cell->Draw(*dc, 0, 0,
y * wxHTML_SCROLL_STEP + rect.GetTop(),
y * wxHTML_SCROLL_STEP + rect.GetBottom(),
rinfo);
#ifdef DEBUG_HTML_SELECTION
{
int xc, yc, x, y;
wxGetMousePosition(&xc, &yc);
ScreenToClient(&xc, &yc);
CalcUnscrolledPosition(xc, yc, &x, &y);
wxHtmlCell *at = m_Cell->FindCellByPos(x, y);
wxHtmlCell *before =
m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_BEFORE);
wxHtmlCell *after =
m_Cell->FindCellByPos(x, y, wxHTML_FIND_NEAREST_AFTER);
dc->SetBrush(*wxTRANSPARENT_BRUSH);
dc->SetPen(*wxBLACK_PEN);
if (at)
dc->DrawRectangle(at->GetAbsPos(),
wxSize(at->GetWidth(),at->GetHeight()));
dc->SetPen(*wxGREEN_PEN);
if (before)
dc->DrawRectangle(before->GetAbsPos().x+1, before->GetAbsPos().y+1,
before->GetWidth()-2,before->GetHeight()-2);
dc->SetPen(*wxRED_PEN);
if (after)
dc->DrawRectangle(after->GetAbsPos().x+2, after->GetAbsPos().y+2,
after->GetWidth()-4,after->GetHeight()-4);
}
#endif // DEBUG_HTML_SELECTION
if ( dc != &dcPaint )
{
dc->SetDeviceOrigin(0,0);
dcPaint.Blit(0, rect.GetTop(),
sz.x, rect.GetBottom() - rect.GetTop() + 1,
dc,
0, rect.GetTop());
}
}
void wxHtmlWindow::OnSize(wxSizeEvent& event)
{
event.Skip();
m_backBuffer = wxNullBitmap;
CreateLayout();
// Recompute selection if necessary:
if ( m_selection )
{
m_selection->Set(m_selection->GetFromCell(),
m_selection->GetToCell());
m_selection->ClearFromToCharacterPos();
}
Refresh();
}
void wxHtmlWindow::OnMouseMove(wxMouseEvent& WXUNUSED(event))
{
wxHtmlWindowMouseHelper::HandleMouseMoved();
}
void wxHtmlWindow::OnMouseDown(wxMouseEvent& event)
{
#if wxUSE_CLIPBOARD
if ( event.LeftDown() && IsSelectionEnabled() )
{
const long TRIPLECLICK_LEN = 200; // 0.2 sec after doubleclick
if ( wxGetLocalTimeMillis() - m_lastDoubleClick <= TRIPLECLICK_LEN )
{
SelectLine(CalcUnscrolledPosition(event.GetPosition()));
(void) CopySelection();
}
else
{
m_makingSelection = true;
if ( m_selection )
{
wxDELETE(m_selection);
Refresh();
}
m_tmpSelFromPos = CalcUnscrolledPosition(event.GetPosition());
m_tmpSelFromCell = NULL;
CaptureMouse();
}
}
#endif // wxUSE_CLIPBOARD
// in any case, let the default handler set focus to this window
event.Skip();
}
void wxHtmlWindow::OnMouseUp(wxMouseEvent& event)
{
#if wxUSE_CLIPBOARD
if ( m_makingSelection )
{
ReleaseMouse();
m_makingSelection = false;
// if m_selection=NULL, the user didn't move the mouse far enough from
// starting point and the mouse up event is part of a click, the user
// is not selecting text:
if ( m_selection )
{
CopySelection(Primary);
// we don't want mouse up event that ended selecting to be
// handled as mouse click and e.g. follow hyperlink:
return;
}
}
#endif // wxUSE_CLIPBOARD
wxPoint pos = CalcUnscrolledPosition(event.GetPosition());
if ( !wxHtmlWindowMouseHelper::HandleMouseClick(m_Cell, pos, event) )
event.Skip();
}
#if wxUSE_CLIPBOARD
void wxHtmlWindow::OnMouseCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
{
if ( !m_makingSelection )
return;
// discard the selecting operation
m_makingSelection = false;
wxDELETE(m_selection);
m_tmpSelFromCell = NULL;
Refresh();
}
#endif // wxUSE_CLIPBOARD
void wxHtmlWindow::OnInternalIdle()
{
wxWindow::OnInternalIdle();
if (m_Cell != NULL && DidMouseMove())
{
#ifdef DEBUG_HTML_SELECTION
Refresh();
#endif
int xc, yc, x, y;
wxGetMousePosition(&xc, &yc);
ScreenToClient(&xc, &yc);
CalcUnscrolledPosition(xc, yc, &x, &y);
wxHtmlCell *cell = m_Cell->FindCellByPos(x, y);
// handle selection update:
if ( m_makingSelection )
{
if ( !m_tmpSelFromCell )
m_tmpSelFromCell = m_Cell->FindCellByPos(
m_tmpSelFromPos.x,m_tmpSelFromPos.y);
// NB: a trick - we adjust selFromPos to be upper left or bottom
// right corner of the first cell of the selection depending
// on whether the mouse is moving to the right or to the left.
// This gives us more "natural" behaviour when selecting
// a line (specifically, first cell of the next line is not
// included if you drag selection from left to right over
// entire line):
wxPoint dirFromPos;
if ( !m_tmpSelFromCell )
{
dirFromPos = m_tmpSelFromPos;
}
else
{
dirFromPos = m_tmpSelFromCell->GetAbsPos();
if ( x < m_tmpSelFromPos.x )
{
dirFromPos.x += m_tmpSelFromCell->GetWidth();
dirFromPos.y += m_tmpSelFromCell->GetHeight();
}
}
bool goingDown = dirFromPos.y < y ||
(dirFromPos.y == y && dirFromPos.x < x);
// determine selection span:
if ( /*still*/ !m_tmpSelFromCell )
{
if (goingDown)
{
m_tmpSelFromCell = m_Cell->FindCellByPos(
m_tmpSelFromPos.x,m_tmpSelFromPos.y,
wxHTML_FIND_NEAREST_AFTER);
if (!m_tmpSelFromCell)
m_tmpSelFromCell = m_Cell->GetFirstTerminal();
}
else
{
m_tmpSelFromCell = m_Cell->FindCellByPos(
m_tmpSelFromPos.x,m_tmpSelFromPos.y,
wxHTML_FIND_NEAREST_BEFORE);
if (!m_tmpSelFromCell)
m_tmpSelFromCell = m_Cell->GetLastTerminal();
}
}
wxHtmlCell *selcell = cell;
if (!selcell)
{
if (goingDown)
{
selcell = m_Cell->FindCellByPos(x, y,
wxHTML_FIND_NEAREST_BEFORE);
if (!selcell)
selcell = m_Cell->GetLastTerminal();
}
else
{
selcell = m_Cell->FindCellByPos(x, y,
wxHTML_FIND_NEAREST_AFTER);
if (!selcell)
selcell = m_Cell->GetFirstTerminal();
}
}
// NB: it may *rarely* happen that the code above didn't find one
// of the cells, e.g. if wxHtmlWindow doesn't contain any
// visible cells.
if ( selcell && m_tmpSelFromCell )
{
if ( !m_selection )
{
// start selecting only if mouse movement was big enough
// (otherwise it was meant as mouse click, not selection):
const int PRECISION = 2;
wxPoint diff = m_tmpSelFromPos - wxPoint(x,y);
if (abs(diff.x) > PRECISION || abs(diff.y) > PRECISION)
{
m_selection = new wxHtmlSelection();
}
}
if ( m_selection )
{
if ( m_tmpSelFromCell->IsBefore(selcell) )
{
m_selection->Set(m_tmpSelFromPos, m_tmpSelFromCell,
wxPoint(x,y), selcell);
}
else
{
m_selection->Set(wxPoint(x,y), selcell,
m_tmpSelFromPos, m_tmpSelFromCell);
}
m_selection->ClearFromToCharacterPos();
Refresh();
}
}
}
// handle cursor and status bar text changes:
// NB: because we're passing in 'cell' and not 'm_Cell' (so that the
// leaf cell lookup isn't done twice), we need to adjust the
// position for the new root:
wxPoint posInCell(x, y);
if (cell)
posInCell -= cell->GetAbsPos();
wxHtmlWindowMouseHelper::HandleIdle(cell, posInCell);
}
}
#if wxUSE_CLIPBOARD
void wxHtmlWindow::StopAutoScrolling()
{
if ( m_timerAutoScroll )
{
wxDELETE(m_timerAutoScroll);
}
}
void wxHtmlWindow::OnMouseEnter(wxMouseEvent& event)
{
StopAutoScrolling();
event.Skip();
}
void wxHtmlWindow::OnMouseLeave(wxMouseEvent& event)
{
// don't prevent the usual processing of the event from taking place
event.Skip();
// when a captured mouse leave a scrolled window we start generate
// scrolling events to allow, for example, extending selection beyond the
// visible area in some controls
if ( wxWindow::GetCapture() == this )
{
// where is the mouse leaving?
int pos, orient;
wxPoint pt = event.GetPosition();
if ( pt.x < 0 )
{
orient = wxHORIZONTAL;
pos = 0;
}
else if ( pt.y < 0 )
{
orient = wxVERTICAL;
pos = 0;
}
else // we're lower or to the right of the window
{
wxSize size = GetClientSize();
if ( pt.x > size.x )
{
orient = wxHORIZONTAL;
pos = GetVirtualSize().x / wxHTML_SCROLL_STEP;
}
else if ( pt.y > size.y )
{
orient = wxVERTICAL;
pos = GetVirtualSize().y / wxHTML_SCROLL_STEP;
}
else // this should be impossible
{
// but seems to happen sometimes under wxMSW - maybe it's a bug
// there but for now just ignore it
//wxFAIL_MSG( wxT("can't understand where has mouse gone") );
return;
}
}
// only start the auto scroll timer if the window can be scrolled in
// this direction
if ( !HasScrollbar(orient) )
return;
delete m_timerAutoScroll;
m_timerAutoScroll = new wxHtmlWinAutoScrollTimer
(
this,
pos == 0 ? wxEVT_SCROLLWIN_LINEUP
: wxEVT_SCROLLWIN_LINEDOWN,
pos,
orient
);
m_timerAutoScroll->Start(50); // FIXME: make configurable
}
}
void wxHtmlWindow::OnKeyUp(wxKeyEvent& event)
{
if ( IsSelectionEnabled() &&
(event.GetKeyCode() == 'C' && event.CmdDown()) )
{
wxClipboardTextEvent evt(wxEVT_TEXT_COPY, GetId());
evt.SetEventObject(this);
GetEventHandler()->ProcessEvent(evt);
}
else
{
event.Skip();
}
}
void wxHtmlWindow::OnCopy(wxCommandEvent& WXUNUSED(event))
{
(void) CopySelection();
}
void wxHtmlWindow::OnClipboardEvent(wxClipboardTextEvent& WXUNUSED(event))
{
(void) CopySelection();
}
void wxHtmlWindow::OnDoubleClick(wxMouseEvent& event)
{
// select word under cursor:
if ( IsSelectionEnabled() )
{
SelectWord(CalcUnscrolledPosition(event.GetPosition()));
(void) CopySelection(Primary);
m_lastDoubleClick = wxGetLocalTimeMillis();
}
else
event.Skip();
}
void wxHtmlWindow::SelectWord(const wxPoint& pos)
{
if ( m_Cell )
{
wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y);
if ( cell )
{
delete m_selection;
m_selection = new wxHtmlSelection();
m_selection->Set(cell, cell);
RefreshRect(wxRect(CalcScrolledPosition(cell->GetAbsPos()),
wxSize(cell->GetWidth(), cell->GetHeight())));
}
}
}
void wxHtmlWindow::SelectLine(const wxPoint& pos)
{
if ( m_Cell )
{
wxHtmlCell *cell = m_Cell->FindCellByPos(pos.x, pos.y);
if ( cell )
{
// We use following heuristic to find a "line": let the line be all
// cells in same container as the cell under mouse cursor that are
// neither completely above nor completely below the clicked cell
// (i.e. are likely to be words positioned on same line of text).
int y1 = cell->GetAbsPos().y;
int y2 = y1 + cell->GetHeight();
int y;
const wxHtmlCell *c;
const wxHtmlCell *before = NULL;
const wxHtmlCell *after = NULL;
// find last cell of line:
for ( c = cell->GetNext(); c; c = c->GetNext())
{
y = c->GetAbsPos().y;
if ( y + c->GetHeight() > y1 && y < y2 )
after = c;
else
break;
}
if ( !after )
after = cell;
// find first cell of line:
for ( c = cell->GetParent()->GetFirstChild();
c && c != cell; c = c->GetNext())
{
y = c->GetAbsPos().y;
if ( y + c->GetHeight() > y1 && y < y2 )
{
if ( ! before )
before = c;
}
else
before = NULL;
}
if ( !before )
before = cell;
delete m_selection;
m_selection = new wxHtmlSelection();
m_selection->Set(before, after);
Refresh();
}
}
}
void wxHtmlWindow::SelectAll()
{
if ( m_Cell )
{
delete m_selection;
m_selection = new wxHtmlSelection();
m_selection->Set(m_Cell->GetFirstTerminal(), m_Cell->GetLastTerminal());
Refresh();
}
}
#endif // wxUSE_CLIPBOARD
IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
wxBEGIN_PROPERTIES_TABLE(wxHtmlWindow)
/*
TODO PROPERTIES
style , wxHW_SCROLLBAR_AUTO
borders , (dimension)
url , string
htmlcode , string
*/
wxEND_PROPERTIES_TABLE()
wxBEGIN_HANDLERS_TABLE(wxHtmlWindow)
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_5( wxHtmlWindow , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
wxIMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h")
BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
EVT_SIZE(wxHtmlWindow::OnSize)
EVT_LEFT_DOWN(wxHtmlWindow::OnMouseDown)
EVT_LEFT_UP(wxHtmlWindow::OnMouseUp)
EVT_RIGHT_UP(wxHtmlWindow::OnMouseUp)
EVT_MOTION(wxHtmlWindow::OnMouseMove)
EVT_PAINT(wxHtmlWindow::OnPaint)
EVT_ERASE_BACKGROUND(wxHtmlWindow::OnEraseBackground)
#if wxUSE_CLIPBOARD
EVT_LEFT_DCLICK(wxHtmlWindow::OnDoubleClick)
EVT_ENTER_WINDOW(wxHtmlWindow::OnMouseEnter)
EVT_LEAVE_WINDOW(wxHtmlWindow::OnMouseLeave)
EVT_MOUSE_CAPTURE_LOST(wxHtmlWindow::OnMouseCaptureLost)
EVT_KEY_UP(wxHtmlWindow::OnKeyUp)
EVT_MENU(wxID_COPY, wxHtmlWindow::OnCopy)
EVT_TEXT_COPY(wxID_ANY, wxHtmlWindow::OnClipboardEvent)
#endif // wxUSE_CLIPBOARD
END_EVENT_TABLE()
//-----------------------------------------------------------------------------
// wxHtmlWindowInterface implementation in wxHtmlWindow
//-----------------------------------------------------------------------------
void wxHtmlWindow::SetHTMLWindowTitle(const wxString& title)
{
OnSetTitle(title);
}
void wxHtmlWindow::OnHTMLLinkClicked(const wxHtmlLinkInfo& link)
{
OnLinkClicked(link);
}
wxHtmlOpeningStatus wxHtmlWindow::OnHTMLOpeningURL(wxHtmlURLType type,
const wxString& url,
wxString *redirect) const
{
return OnOpeningURL(type, url, redirect);
}
wxPoint wxHtmlWindow::HTMLCoordsToWindow(wxHtmlCell *WXUNUSED(cell),
const wxPoint& pos) const
{
return CalcScrolledPosition(pos);
}
wxWindow* wxHtmlWindow::GetHTMLWindow()
{
return this;
}
wxColour wxHtmlWindow::GetHTMLBackgroundColour() const
{
return GetBackgroundColour();
}
void wxHtmlWindow::SetHTMLBackgroundColour(const wxColour& clr)
{
SetBackgroundColour(clr);
}
void wxHtmlWindow::SetHTMLBackgroundImage(const wxBitmap& bmpBg)
{
SetBackgroundImage(bmpBg);
}
void wxHtmlWindow::SetHTMLStatusText(const wxString& text)
{
#if wxUSE_STATUSBAR
if (m_RelatedStatusBarIndex != -1)
{
if (m_RelatedStatusBar)
{
m_RelatedStatusBar->SetStatusText(text, m_RelatedStatusBarIndex);
}
else if (m_RelatedFrame)
{
m_RelatedFrame->SetStatusText(text, m_RelatedStatusBarIndex);
}
}
#else
wxUnusedVar(text);
#endif // wxUSE_STATUSBAR
}
/*static*/
wxCursor wxHtmlWindow::GetDefaultHTMLCursor(HTMLCursor type)
{
switch (type)
{
case HTMLCursor_Link:
if ( !ms_cursorLink )
ms_cursorLink = new wxCursor(wxCURSOR_HAND);
return *ms_cursorLink;
case HTMLCursor_Text:
if ( !ms_cursorText )
ms_cursorText = new wxCursor(wxCURSOR_IBEAM);
return *ms_cursorText;
case HTMLCursor_Default:
default:
if ( !ms_cursorDefault )
ms_cursorDefault = new wxCursor(wxCURSOR_ARROW);
return *ms_cursorDefault;
}
}
wxCursor wxHtmlWindow::GetHTMLCursor(HTMLCursor type) const
{
return GetDefaultHTMLCursor(type);
}
/*static*/
void wxHtmlWindow::SetDefaultHTMLCursor(HTMLCursor type, const wxCursor& cursor)
{
switch (type)
{
case HTMLCursor_Link:
delete ms_cursorLink;
ms_cursorLink = new wxCursor(cursor);
return;
case HTMLCursor_Text:
delete ms_cursorText;
ms_cursorText = new wxCursor(cursor);
return;
case HTMLCursor_Default:
default:
delete ms_cursorText;
ms_cursorDefault = new wxCursor(cursor);
}
}
//-----------------------------------------------------------------------------
// wxHtmlWinModule
//-----------------------------------------------------------------------------
// A module to allow initialization/cleanup
// without calling these functions from app.cpp or from
// the user's application.
class wxHtmlWinModule: public wxModule
{
DECLARE_DYNAMIC_CLASS(wxHtmlWinModule)
public:
wxHtmlWinModule() : wxModule() {}
bool OnInit() wxOVERRIDE { return true; }
void OnExit() wxOVERRIDE { wxHtmlWindow::CleanUpStatics(); }
};
IMPLEMENT_DYNAMIC_CLASS(wxHtmlWinModule, wxModule)
// This hack forces the linker to always link in m_* files
// (wxHTML doesn't work without handlers from these files)
#include "wx/html/forcelnk.h"
FORCE_WXHTML_MODULES()
#endif // wxUSE_HTML
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