// Name: gtk/scrolwin.cpp
// Purpose: wxScrolledWindow implementation
// Author: Julian Smart
-// Modified by:
+// Modified by: Ron Lee
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
m_yScrollingEnabled = TRUE;
m_xScrollPosition = 0;
m_yScrollPosition = 0;
- m_xScrollLines = 0;
- m_yScrollLines = 0;
m_xScrollLinesPerPage = 0;
m_yScrollLinesPerPage = 0;
m_targetWindow = (wxWindow*) NULL;
// setting scrolling parameters
// ----------------------------------------------------------------------------
+void wxScrolledWindow::DoSetVirtualSize( int x, int y )
+{
+ wxPanel::DoSetVirtualSize( x, y );
+ AdjustScrollbars();
+
+#if wxUSE_CONSTRAINTS
+ if (GetAutoLayout())
+ Layout();
+#endif
+}
+
/*
* pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line)
* noUnitsX/noUnitsY: : no. units per scrollbar
*/
-void wxScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY,
- int noUnitsX, int noUnitsY,
- int xPos, int yPos, bool noRefresh )
+void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY,
+ int noUnitsX, int noUnitsY,
+ int xPos, int yPos, bool noRefresh )
{
int old_x = m_xScrollPixelsPerLine * m_xScrollPosition;
int old_y = m_yScrollPixelsPerLine * m_yScrollPosition;
m_xScrollPixelsPerLine = pixelsPerUnitX;
m_yScrollPixelsPerLine = pixelsPerUnitY;
- m_xScrollLines = noUnitsX;
- m_yScrollLines = noUnitsY;
- m_xScrollPosition = xPos;
- m_yScrollPosition = yPos;
- m_hAdjust->lower = 0.0;
- m_hAdjust->upper = noUnitsX;
- m_hAdjust->value = xPos;
- m_hAdjust->step_increment = 1.0;
- m_hAdjust->page_increment = 2.0;
+ m_hAdjust->value = m_xScrollPosition = xPos;
+ m_vAdjust->value = m_yScrollPosition = yPos;
- m_vAdjust->lower = 0.0;
- m_vAdjust->upper = noUnitsY;
- m_vAdjust->value = yPos;
- m_vAdjust->step_increment = 1.0;
- m_vAdjust->page_increment = 2.0;
-
- AdjustScrollbars();
+ m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
if (!noRefresh)
{
int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
int new_y = m_yScrollPixelsPerLine * m_yScrollPosition;
- m_targetWindow->ScrollWindow( old_x-new_x, old_y-new_y );
+ m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y );
}
}
void wxScrolledWindow::AdjustScrollbars()
{
int w, h;
+ int vw, vh;
+
m_targetWindow->GetClientSize( &w, &h );
+ m_targetWindow->GetVirtualSize( &vw, &vh );
if (m_xScrollPixelsPerLine == 0)
{
}
else
{
+ m_hAdjust->upper = vw / m_xScrollPixelsPerLine;
m_hAdjust->page_size = (w / m_xScrollPixelsPerLine);
- int max = (int)(m_hAdjust->upper - m_hAdjust->page_size + 0.5);
- if (max < 0) max = 0;
-
- int x_pos = m_xScrollPosition;
- if (x_pos > max) x_pos = max;
- if (x_pos < 0) x_pos = 0;
+ // If the scrollbar hits the right side, move the window
+ // right to keep it from over extending.
- int old_x = m_xScrollPosition;
- m_xScrollPosition = x_pos;
- m_hAdjust->value = x_pos;
-
- if (x_pos != old_x)
- m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+ if( m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper )
+ {
+ if (GetChildren().GetCount() == 0)
+ {
+ m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size;
+ m_xScrollPosition = (int)m_hAdjust->value;
+ }
+ }
}
if (m_yScrollPixelsPerLine == 0)
}
else
{
+ m_vAdjust->upper = vh / m_yScrollPixelsPerLine;
m_vAdjust->page_size = (h / m_yScrollPixelsPerLine);
- int max = (int)(m_vAdjust->upper - m_vAdjust->page_size + 0.5);
- if (max < 0) max = 0;
-
- int y_pos = m_yScrollPosition;
- 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;
-
- if (y_pos != old_y)
- m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+ if( m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper )
+ {
+ if (GetChildren().GetCount() == 0)
+ {
+ m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size;
+ m_yScrollPosition = (int)m_vAdjust->value;
+ }
+ }
}
m_xScrollLinesPerPage = (int)(m_hAdjust->page_size + 0.5);
gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
}
+
// ----------------------------------------------------------------------------
// target window handling
// ----------------------------------------------------------------------------
-m_yScrollPosition * m_yScrollPixelsPerLine );
}
+void wxScrolledWindow::SetScrollRate( int xstep, int ystep )
+{
+ int old_x = m_xScrollPixelsPerLine * m_xScrollPosition;
+ int old_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+
+ m_xScrollPixelsPerLine = xstep;
+ m_yScrollPixelsPerLine = ystep;
+
+ int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
+ int new_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+
+ m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y );
+
+ AdjustScrollbars();
+}
+
void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
{
if ( x_unit )
void wxScrolledWindow::Scroll( int x_pos, int y_pos )
{
- if (!m_targetWindow)
- return;
+ wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );
if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type )
{
- if (!m_targetWindow)
- return;
+ wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );
if (m_yScrollPixelsPerLine == 0)
return;
void wxScrolledWindow::GtkHScroll( float value, unsigned int scroll_type )
{
- if (!m_targetWindow)
- return;
+ wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );
if (m_xScrollPixelsPerLine == 0)
return;
m_yScrollingEnabled = y_scroll;
}
-void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
-{
- wxSize sz(0, 0);
- if (m_targetWindow)
- sz = m_targetWindow->GetClientSize();
-
- if ( x )
- {
- if (m_xScrollPixelsPerLine == 0)
- *x = sz.x;
- else
- *x = m_xScrollPixelsPerLine * m_xScrollLines;
- }
- if ( y )
- {
- if (m_yScrollPixelsPerLine == 0)
- *y = sz.y;
- else
- *y = m_yScrollPixelsPerLine * m_yScrollLines;
- }
-}
-
// Where the current view starts from
void wxScrolledWindow::GetViewStart (int *x, int *y) const
{
if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
{
if (orient == wxHORIZONTAL)
- nScrollInc = m_xScrollLines - m_xScrollPosition;
+ nScrollInc = GetVirtualSize().GetWidth() / m_xScrollPixelsPerLine - m_xScrollPosition;
else
- nScrollInc = m_yScrollLines - m_yScrollPosition;
+ nScrollInc = GetVirtualSize().GetHeight() / m_yScrollPixelsPerLine - m_yScrollPosition;
} else
if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
{
(GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
}
-
bool wxScrolledWindow::Layout()
{
- if (GetSizer())
+ if (GetSizer() && m_targetWindow == this)
{
- // Take into account the virtual size and scrolled position of the window
+ // If we're the scroll target, take into account the
+ // virtual size and scrolled position of the window.
+
int x, y, w, h;
CalcScrolledPosition(0,0, &x,&y);
GetVirtualSize(&w, &h);
// Default OnSize resets scrollbars, if any
void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
{
-#if wxUSE_CONSTRAINTS
- if (GetAutoLayout())
- Layout();
-#endif
+ if( m_targetWindow != this )
+ m_targetWindow->SetVirtualSize( m_targetWindow->GetClientSize() );
- AdjustScrollbars();
+ SetVirtualSize( GetClientSize() );
}
// This calls OnDraw, having adjusted the origin according to the current
}
}
+
+// vi:sts=4:sw=4:et
projects / wxWidgets.git / blobdiff