/////////////////////////////////////////////////////////////////////////////
-// Name: generic/scrolwin.cpp
+// Name: gtk/scrolwin.cpp
// Purpose: wxScrolledWindow implementation
// Author: Julian Smart
// Modified by:
static void wxInsertChildInScrolledWindow( wxWindow* parent, wxWindow* child )
{
- /* the window might have been scrolled already, do we
- have to adapt the position */
+ // The window might have been scrolled already, do we
+ // have to adapt the position.
GtkPizza *pizza = GTK_PIZZA(parent->m_wxwindow);
child->m_x += pizza->xoffset;
child->m_y += pizza->yoffset;
// wxScrolledWindow creation
// ----------------------------------------------------------------------------
-wxScrolledWindow::wxScrolledWindow()
+void wxScrolledWindow::Init()
{
m_xScrollPixelsPerLine = 0;
m_yScrollPixelsPerLine = 0;
m_targetWindow = (wxWindow*) NULL;
m_scaleX = 1.0;
m_scaleY = 1.0;
+ m_hasScrolling = TRUE;
}
bool wxScrolledWindow::Create(wxWindow *parent,
long style,
const wxString& name)
{
+ Init();
+
if (!PreCreation( parent, pos, size ) ||
!CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
{
m_insertCallback = wxInsertChildInScrolledWindow;
- m_xScrollPixelsPerLine = 0;
- m_yScrollPixelsPerLine = 0;
- m_xScrollingEnabled = TRUE;
- m_yScrollingEnabled = TRUE;
- m_xScrollPosition = 0;
- m_yScrollPosition = 0;
- m_xScrollLines = 0;
- m_yScrollLines = 0;
- m_xScrollLinesPerPage = 0;
- m_yScrollLinesPerPage = 0;
-
m_targetWindow = this;
m_widget = gtk_scrolled_window_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
m_hAdjust->page_increment = 1.0;
gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
- // these handlers get notified when screen updates are required either when
- // scrolling or when the window size (and therefore scrollbar configuration)
- // has changed
- gtk_signal_connect( GTK_OBJECT(m_hAdjust), "value_changed",
- (GtkSignalFunc) gtk_scrolled_window_hscroll_callback, (gpointer) this );
- gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
- (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
+ // Handlers for new scrollbar values
+ GtkVConnectEvent();
+ GtkHConnectEvent();
gtk_widget_show( m_wxwindow );
return TRUE;
}
-wxScrolledWindow::~wxScrolledWindow()
-{
-}
-
// ----------------------------------------------------------------------------
// setting scrolling parameters
// ----------------------------------------------------------------------------
m_hAdjust->upper = noUnitsX;
m_hAdjust->value = xPos;
m_hAdjust->step_increment = 1.0;
- m_hAdjust->page_increment = 1.0;
+ m_hAdjust->page_increment = 2.0;
m_vAdjust->lower = 0.0;
m_vAdjust->upper = noUnitsY;
m_vAdjust->value = yPos;
m_vAdjust->step_increment = 1.0;
- m_vAdjust->page_increment = 1.0;
+ m_vAdjust->page_increment = 2.0;
AdjustScrollbars();
}
else
m_vAdjust->page_size = (h / m_yScrollPixelsPerLine);
+ m_xScrollLinesPerPage = (int)(m_hAdjust->page_size + 0.5);
+ m_yScrollLinesPerPage = (int)(m_vAdjust->page_size + 0.5);
+
gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
}
void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
{
int orient = event.GetOrientation();
-
+
int nScrollInc = CalcScrollInc(event);
if (nScrollInc == 0) return;
if ((x_pos != -1) && (m_xScrollPixelsPerLine))
{
+ int max = (int)(m_hAdjust->upper - m_hAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
+ if (x_pos > max) x_pos = max;
+ if (x_pos < 0) x_pos = 0;
+
int old_x = m_xScrollPosition;
m_xScrollPosition = x_pos;
m_hAdjust->value = x_pos;
- wxEventType command = wxEVT_SCROLLWIN_THUMBTRACK;
- wxScrollWinEvent event( command, m_xScrollPosition, wxHORIZONTAL );
- event.SetEventObject( this );
- GetEventHandler()->ProcessEvent( event );
-
m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+ // Just update the scrollbar, don't send any wxWindows event
+ GtkHDisconnectEvent();
gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
+ GtkHConnectEvent();
}
if ((y_pos != -1) && (m_yScrollPixelsPerLine))
{
+ int max = (int)(m_vAdjust->upper - m_vAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
+ if (y_pos > max) y_pos = max;
+ if (y_pos < 0) y_pos = 0;
+
int old_y = m_yScrollPosition;
m_yScrollPosition = y_pos;
m_vAdjust->value = y_pos;
- wxEventType command = wxEVT_SCROLLWIN_THUMBTRACK;
- wxScrollWinEvent event( command, m_yScrollPosition, wxVERTICAL );
- event.SetEventObject( this );
- GetEventHandler()->ProcessEvent( event );
-
m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+ // Just update the scrollbar, don't send any wxWindows event
+ GtkVDisconnectEvent();
gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
+ GtkVConnectEvent();
}
}
if (y_pos == m_yScrollPosition)
return;
- int old_y = m_yScrollPosition;
- m_yScrollPosition = y_pos;
-
GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget);
- GtkRange *range = GTK_RANGE(scrolledWindow->hscrollbar);
+ GtkRange *range = GTK_RANGE(scrolledWindow->vscrollbar);
wxEventType command = wxEVT_SCROLLWIN_THUMBTRACK;
if (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLLWIN_LINEUP;
else if (range->scroll_type == GTK_SCROLL_PAGE_BACKWARD) command = wxEVT_SCROLLWIN_PAGEUP;
else if (range->scroll_type == GTK_SCROLL_PAGE_FORWARD) command = wxEVT_SCROLLWIN_PAGEDOWN;
- wxScrollWinEvent event( command, m_yScrollPosition, wxVERTICAL );
+ wxScrollWinEvent event( command, y_pos, wxVERTICAL );
event.SetEventObject( this );
GetEventHandler()->ProcessEvent( event );
-
- m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
}
void wxScrolledWindow::GtkHScroll( float value )
{
if (!m_targetWindow)
return;
-
+
if (m_xScrollPixelsPerLine == 0)
return;
int x_pos = (int)(value+0.5);
-
+
if (x_pos == m_xScrollPosition)
return;
-
- int old_x = m_xScrollPosition;
- m_xScrollPosition = x_pos;
GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget);
GtkRange *range = GTK_RANGE(scrolledWindow->hscrollbar);
else if (range->scroll_type == GTK_SCROLL_PAGE_BACKWARD) command = wxEVT_SCROLLWIN_PAGEUP;
else if (range->scroll_type == GTK_SCROLL_PAGE_FORWARD) command = wxEVT_SCROLLWIN_PAGEDOWN;
- wxScrollWinEvent event( command, m_xScrollPosition, wxHORIZONTAL );
+ wxScrollWinEvent event( command, x_pos, wxHORIZONTAL );
event.SetEventObject( this );
GetEventHandler()->ProcessEvent( event );
-
- m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
}
void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
{
if (m_xScrollPixelsPerLine > 0)
{
- int w, h;
- m_targetWindow->GetClientSize(&w, &h);
-
- int nMaxWidth = m_xScrollLines*m_xScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxWidth - w)/(double)m_xScrollPixelsPerLine) + 0.5 );
- if (noPositions < 0)
- noPositions = 0;
+ int max = (int)(m_hAdjust->upper - m_hAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
if ( (m_xScrollPosition + nScrollInc) < 0 )
nScrollInc = -m_xScrollPosition; // As -ve as we can go
- else if ( (m_xScrollPosition + nScrollInc) > noPositions )
- nScrollInc = noPositions - m_xScrollPosition; // As +ve as we can go
+ else if ( (m_xScrollPosition + nScrollInc) > max )
+ nScrollInc = max - m_xScrollPosition; // As +ve as we can go
}
else
m_targetWindow->Refresh();
{
if (m_yScrollPixelsPerLine > 0)
{
- int w, h;
- m_targetWindow->GetClientSize(&w, &h);
-
- int nMaxHeight = m_yScrollLines*m_yScrollPixelsPerLine;
- int noPositions = (int) ( ((nMaxHeight - h)/(double)m_yScrollPixelsPerLine) + 0.5 );
- if (noPositions < 0)
- noPositions = 0;
+ int max = (int)(m_vAdjust->upper - m_vAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
if ( (m_yScrollPosition + nScrollInc) < 0 )
nScrollInc = -m_yScrollPosition; // As -ve as we can go
- else if ( (m_yScrollPosition + nScrollInc) > noPositions )
- nScrollInc = noPositions - m_yScrollPosition; // As +ve as we can go
+ else if ( (m_yScrollPosition + nScrollInc) > max )
+ nScrollInc = max - m_yScrollPosition; // As +ve as we can go
}
else
m_targetWindow->Refresh();
return nScrollInc;
}
+void wxScrolledWindow::SetScrollPos( int orient, int pos, bool WXUNUSED(refresh) )
+{
+ wxCHECK_RET( m_widget != NULL, wxT("invalid window") );
+
+ wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
+
+ if (orient == wxHORIZONTAL)
+ {
+ int max = (int)(m_hAdjust->upper - m_hAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
+
+ if (pos > max) pos = 0;
+ if (pos < 0) pos = 0;
+
+ if (pos == (int)(m_hAdjust->value+0.5)) return;
+ m_hAdjust->value = pos;
+ }
+ else
+ {
+ int max = (int)(m_vAdjust->upper - m_vAdjust->page_size + 0.5);
+ if (max < 0) max = 0;
+
+ if (pos > max) pos = 0;
+ if (pos < 0) pos = 0;
+
+ if (pos == (int)(m_vAdjust->value+0.5)) return;
+ m_vAdjust->value = pos;
+ }
+
+ if (m_wxwindow->window)
+ {
+ if (orient == wxHORIZONTAL)
+ {
+ // Just update the scrollbar, don't send any wxWindows event
+ GtkHDisconnectEvent();
+ gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
+ GtkHConnectEvent();
+ }
+ else
+ {
+ // Just update the scrollbar, don't send any wxWindows event
+ GtkVDisconnectEvent();
+ gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
+ GtkVConnectEvent();
+ }
+ }
+}
+
+void wxScrolledWindow::GtkVConnectEvent()
+{
+ gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
+ (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
+}
+
+void wxScrolledWindow::GtkHConnectEvent()
+{
+ gtk_signal_connect( GTK_OBJECT(m_hAdjust), "value_changed",
+ (GtkSignalFunc) gtk_scrolled_window_hscroll_callback, (gpointer) this );
+}
+
+void wxScrolledWindow::GtkHDisconnectEvent()
+{
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_hAdjust),
+ (GtkSignalFunc) gtk_scrolled_window_hscroll_callback, (gpointer) this );
+}
+
+void wxScrolledWindow::GtkVDisconnectEvent()
+{
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_vAdjust),
+ (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
+}
+
// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff