#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"
SetBackgroundImage(wxNullBitmap);
m_Parser->SetDC(dc);
- if (m_Cell)
- {
- delete m_Cell;
- // 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:
- // without this we may crash if it's used from inside Parse()
- m_Cell = NULL;
- }
+
+ // 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);
delete dc;
m_Cell->SetIndent(m_Borders, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
}
-
+// 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()
{
- int ClientWidth, ClientHeight;
+ // 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);
- if (!m_Cell) return;
+ 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
- GetClientSize(&ClientWidth, &ClientHeight);
- m_Cell->Layout(ClientWidth);
+ m_Cell->Layout(clientWidth);
}
else // !wxHW_SCROLLBAR_NEVER
{
- GetClientSize(&ClientWidth, &ClientHeight);
- m_Cell->Layout(ClientWidth);
- if (ClientHeight < m_Cell->GetHeight() + GetCharHeight())
+ // 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 )
{
- SetScrollbars(
- wxHTML_SCROLL_STEP, wxHTML_SCROLL_STEP,
- m_Cell->GetWidth() / wxHTML_SCROLL_STEP,
- (m_Cell->GetHeight() + GetCharHeight()) / wxHTML_SCROLL_STEP
- /*cheat: top-level frag is always container*/);
+ // 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 /* we fit into window, no need for scrollbars */
+ else
{
- SetScrollbars(wxHTML_SCROLL_STEP, 1, m_Cell->GetWidth() / wxHTML_SCROLL_STEP, 0); // disable...
- GetClientSize(&ClientWidth, &ClientHeight);
- m_Cell->Layout(ClientWidth); // ...and relayout
+ // 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;
if (path != wxEmptyString)
cfg->SetPath(oldpath);
}
-
-
+#endif // wxUSE_CONFIG
bool wxHtmlWindow::HistoryBack()
{
// draw the HTML window contents
dc->SetMapMode(wxMM_TEXT);
dc->SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
+ dc->SetLayoutDirection(GetLayoutDirection());
wxHtmlRenderingInfo rinfo;
wxDefaultHtmlRenderingStyle rstyle;
{
// 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 bellow the clicked cell
+ // 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;
IMPLEMENT_ABSTRACT_CLASS(wxHtmlProcessor,wxObject)
-#if wxUSE_EXTENDED_RTTI
-IMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h")
-
wxBEGIN_PROPERTIES_TABLE(wxHtmlWindow)
/*
TODO PROPERTIES
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_5( wxHtmlWindow , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )
-#else
-IMPLEMENT_DYNAMIC_CLASS(wxHtmlWindow,wxScrolledWindow)
-#endif
+
+wxIMPLEMENT_DYNAMIC_CLASS_XTI(wxHtmlWindow, wxScrolledWindow,"wx/html/htmlwin.h")
BEGIN_EVENT_TABLE(wxHtmlWindow, wxScrolledWindow)
EVT_SIZE(wxHtmlWindow::OnSize)
projects / wxWidgets.git / blobdiff