/////////////////////////////////////////////////////////////////////////////
-// Name: generic/scrolwin.cpp
+// Name: gtk/scrolwin.cpp
// Purpose: wxScrolledWindow implementation
-// Author: Julian Smart
-// Modified by:
+// Author: Robert Roebling
+// Modified by: Ron Lee
// Created: 01/02/97
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Copyright: (c) Robert Roebling
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "scrolwin.h"
#endif
#pragma hdrstop
#endif
+#include "wx/scrolwin.h"
#include "wx/utils.h"
#include "wx/dcclient.h"
-
-#include "wx/gtk/scrolwin.h"
#include "wx/panel.h"
+#include "wx/sizer.h"
-#include <gtk/gtk.h>
+#include "wx/gtk/private.h"
#include "wx/gtk/win_gtk.h"
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxScrolledWindow, wxPanel)
+ EVT_SCROLLWIN(wxScrolledWindow::OnScroll)
EVT_SIZE(wxScrolledWindow::OnSize)
EVT_PAINT(wxScrolledWindow::OnPaint)
EVT_CHAR(wxScrolledWindow::OnChar)
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
+extern bool g_blockEventsOnScroll;
//-----------------------------------------------------------------------------
// idle system
// "value_changed" from m_vAdjust
//-----------------------------------------------------------------------------
-static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust, wxScrolledWindow *win )
+extern "C" {
+static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust,
+ SCROLLBAR_CBACK_ARG
+ wxScrolledWindow *win )
{
if (g_isIdle)
wxapp_install_idle_handler();
if (g_blockEventsOnDrag) return;
if (!win->m_hasVMT) return;
-
- win->GtkVScroll( adjust->value );
+
+ win->GtkVScroll( adjust->value,
+ GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->vscrollbar) );
+}
}
//-----------------------------------------------------------------------------
// "value_changed" from m_hAdjust
//-----------------------------------------------------------------------------
-static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust, wxScrolledWindow *win )
+extern "C" {
+static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust,
+ SCROLLBAR_CBACK_ARG
+ wxScrolledWindow *win )
{
if (g_isIdle)
wxapp_install_idle_handler();
if (g_blockEventsOnDrag) return;
if (!win->m_hasVMT) return;
- win->GtkHScroll( adjust->value );
+ win->GtkHScroll( adjust->value,
+ GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->hscrollbar) );
+}
+}
+
+//-----------------------------------------------------------------------------
+// "button_press_event" from scrollbar
+//-----------------------------------------------------------------------------
+
+extern "C" {
+static gint gtk_scrollbar_button_press_callback( GtkRange *widget,
+ GdkEventButton *gdk_event,
+ wxWindowGTK *win)
+{
+ if (g_isIdle)
+ wxapp_install_idle_handler();
+
+ g_blockEventsOnScroll = TRUE;
+
+ // FIXME: there is no slider field any more, what was meant here?
+#ifndef __WXGTK20__
+ win->m_isScrolling = (gdk_event->window == widget->slider);
+#endif
+
+ return FALSE;
+}
+}
+
+//-----------------------------------------------------------------------------
+// "button_release_event" from scrollbar
+//-----------------------------------------------------------------------------
+
+extern "C" {
+static gint gtk_scrollbar_button_release_callback( GtkRange *widget,
+ GdkEventButton *WXUNUSED(gdk_event),
+ wxWindowGTK *win)
+{
+// don't test here as we can release the mouse while being over
+// a different window than the slider
+//
+// if (gdk_event->window != widget->slider) return FALSE;
+
+ g_blockEventsOnScroll = FALSE;
+
+ if (win->m_isScrolling)
+ {
+ wxEventType command = wxEVT_SCROLLWIN_THUMBRELEASE;
+ int value = -1;
+ int dir = -1;
+
+ GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(win->m_widget);
+ if (widget == GTK_RANGE(scrolledWindow->hscrollbar))
+ {
+ value = (int)(win->m_hAdjust->value+0.5);
+ dir = wxHORIZONTAL;
+ }
+ if (widget == GTK_RANGE(scrolledWindow->vscrollbar))
+ {
+ value = (int)(win->m_vAdjust->value+0.5);
+ dir = wxVERTICAL;
+ }
+
+ wxScrollWinEvent event( command, value, dir );
+ event.SetEventObject( win );
+ win->GetEventHandler()->ProcessEvent( event );
+ }
+
+ win->m_isScrolling = FALSE;
+
+ return FALSE;
+}
}
//-----------------------------------------------------------------------------
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_yScrollingEnabled = TRUE;
m_xScrollPosition = 0;
m_yScrollPosition = 0;
- m_xScrollLines = 0;
- m_yScrollLines = 0;
m_xScrollLinesPerPage = 0;
m_yScrollLinesPerPage = 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_vAdjust->upper = 1.0;
m_vAdjust->value = 0.0;
m_vAdjust->step_increment = 1.0;
- m_vAdjust->page_increment = 1.0;
+ m_vAdjust->page_increment = 2.0;
gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
m_hAdjust->lower = 0.0;
m_hAdjust->upper = 1.0;
m_hAdjust->value = 0.0;
m_hAdjust->step_increment = 1.0;
- m_hAdjust->page_increment = 1.0;
+ m_hAdjust->page_increment = 2.0;
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();
+
+ // these handlers block mouse events to any window during scrolling such as
+ // motion events and prevent GTK and wxWidgets from fighting over where the
+ // slider should be
+
+ gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_press_event",
+ (GtkSignalFunc)gtk_scrollbar_button_press_callback, (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(scrolledWindow->hscrollbar), "button_press_event",
+ (GtkSignalFunc)gtk_scrollbar_button_press_callback, (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_release_event",
+ (GtkSignalFunc)gtk_scrollbar_button_release_callback, (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(scrolledWindow->hscrollbar), "button_release_event",
+ (GtkSignalFunc)gtk_scrollbar_button_release_callback, (gpointer) this );
gtk_widget_show( m_wxwindow );
if (m_parent)
m_parent->DoAddChild( this );
+ m_focusWidget = m_wxwindow;
+
PostCreation();
Show( TRUE );
-
+
return TRUE;
}
-wxScrolledWindow::~wxScrolledWindow()
-{
-}
-
// ----------------------------------------------------------------------------
// setting scrolling parameters
// ----------------------------------------------------------------------------
+void wxScrolledWindow::DoSetVirtualSize( int x, int y )
+{
+ wxPanel::DoSetVirtualSize( x, y );
+ AdjustScrollbars();
+
+ if (GetAutoLayout())
+ Layout();
+}
+
+// wxWindow's GetBestVirtualSize returns the actual window size,
+// whereas we want to return the virtual size
+wxSize wxScrolledWindow::GetBestVirtualSize() const
+{
+ wxSize clientSize( GetClientSize() );
+ if (GetSizer())
+ {
+ wxSize minSize( GetSizer()->CalcMin() );
+
+ return wxSize( wxMax( clientSize.x, minSize.x ), wxMax( clientSize.y, minSize.y ) );
+ }
+ else
+ return clientSize;
+}
+
+// return the size best suited for the current window
+// (this isn't a virtual size, this is a sensible size for the window)
+wxSize wxScrolledWindow::DoGetBestSize() const
+{
+ wxSize best;
+
+ if ( GetSizer() )
+ {
+ wxSize b = GetSizer()->GetMinSize();
+
+ // Only use the content to set the window size in the direction
+ // where there's no scrolling; otherwise we're going to get a huge
+ // window in the direction in which scrolling is enabled
+ int ppuX, ppuY;
+ GetScrollPixelsPerUnit(& ppuX, & ppuY);
+
+ wxSize minSize;
+ if ( GetMinSize().IsFullySpecified() )
+ minSize = GetMinSize();
+ else
+ minSize = GetSize();
+
+ if (ppuX > 0)
+ b.x = minSize.x;
+ if (ppuY > 0)
+ b.y = minSize.y;
+ best = b;
+ }
+ else
+ return wxWindow::DoGetBestSize();
+
+ // Add any difference between size and client size
+ wxSize diff = GetSize() - GetClientSize();
+ best.x += wxMax(0, diff.x);
+ best.y += wxMax(0, diff.y);
+
+ return best;
+}
+
/*
* 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 xs, ys;
+ GetViewStart (& xs, & ys);
+
+ int old_x = m_xScrollPixelsPerLine * xs;
+ int old_y = m_yScrollPixelsPerLine * ys;
+
m_xScrollPixelsPerLine = pixelsPerUnitX;
m_yScrollPixelsPerLine = pixelsPerUnitY;
- m_xScrollPosition = xPos;
- m_yScrollPosition = yPos;
- m_xScrollLines = noUnitsX;
- m_yScrollLines = noUnitsY;
-
- m_hAdjust->lower = 0.0;
- m_hAdjust->upper = noUnitsX;
- m_hAdjust->value = xPos;
- m_hAdjust->step_increment = 1.0;
- m_hAdjust->page_increment = 1.0;
- 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;
-
- AdjustScrollbars();
+ m_hAdjust->value = m_xScrollPosition = xPos;
+ m_vAdjust->value = m_yScrollPosition = yPos;
+
+ // Setting hints here should arguably be deprecated, but without it
+ // a sizer might override this manual scrollbar setting in old code.
+ // m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
+
+ int w = noUnitsX * pixelsPerUnitX;
+ int h = noUnitsY * pixelsPerUnitY;
+ m_targetWindow->SetVirtualSize( w ? w : wxDefaultCoord,
+ h ? h : wxDefaultCoord);
+
+ 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 );
+ }
}
void wxScrolledWindow::AdjustScrollbars()
{
int w, h;
+ int vw, vh;
+
m_targetWindow->GetClientSize( &w, &h );
+ m_targetWindow->GetVirtualSize( &vw, &vh );
if (m_xScrollPixelsPerLine == 0)
+ {
+ m_hAdjust->upper = 1.0;
+ m_hAdjust->page_increment = 1.0;
m_hAdjust->page_size = 1.0;
+ }
else
- m_hAdjust->page_size = (w / m_xScrollPixelsPerLine);
+ {
+ m_hAdjust->upper = (vw+m_xScrollPixelsPerLine-1) / m_xScrollPixelsPerLine;
+ m_hAdjust->page_size = w / m_xScrollPixelsPerLine;
+ m_hAdjust->page_increment = w / m_xScrollPixelsPerLine;
+
+ // Special case. When client and virtual size are very close but
+ // the client is big enough, kill scrollbar.
+
+ if ((m_hAdjust->page_size < m_hAdjust->upper) && (w >= vw))
+ m_hAdjust->page_size += 1.0;
+ // If the scrollbar hits the right side, move the window
+ // right to keep it from over extending.
+
+ if ((m_hAdjust->value != 0.0) && (m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper))
+ {
+ m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size;
+ if (m_hAdjust->value < 0.0)
+ m_hAdjust->value = 0.0;
+
+ if (GetChildren().GetCount() == 0)
+ m_xScrollPosition = (int)m_hAdjust->value; // This is enough without child windows
+ else
+ gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); // Actually scroll window
+ }
+ }
+
if (m_yScrollPixelsPerLine == 0)
+ {
+ m_vAdjust->upper = 1.0;
+ m_vAdjust->page_increment = 1.0;
m_vAdjust->page_size = 1.0;
+ }
else
- m_vAdjust->page_size = (h / m_yScrollPixelsPerLine);
-
+ {
+ m_vAdjust->upper = (vh+m_yScrollPixelsPerLine-1) / m_yScrollPixelsPerLine;
+ m_vAdjust->page_size = h / m_yScrollPixelsPerLine;
+ m_vAdjust->page_increment = h / m_yScrollPixelsPerLine;
+
+ if ((m_vAdjust->page_size < m_vAdjust->upper) && (h >= vh))
+ m_vAdjust->page_size += 1.0;
+
+ if ((m_vAdjust->value != 0.0) && (m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper))
+ {
+ m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size;
+ if (m_vAdjust->value < 0.0)
+ m_vAdjust->value = 0.0;
+
+ if (GetChildren().GetCount() == 0)
+ m_yScrollPosition = (int)m_vAdjust->value;
+ else
+ gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
+ }
+ }
+
+ m_xScrollLinesPerPage = (int)(m_hAdjust->page_increment + 0.5);
+ m_yScrollLinesPerPage = (int)(m_vAdjust->page_increment + 0.5);
+
gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
}
+
// ----------------------------------------------------------------------------
// target window handling
// ----------------------------------------------------------------------------
-void wxScrolledWindow::SetTargetWindow( wxWindow *target )
+void wxScrolledWindow::SetTargetWindow( wxWindow *target, bool WXUNUSED(pushEventHandler) )
{
wxASSERT_MSG( target, wxT("target window must not be NULL") );
m_targetWindow = target;
}
-wxWindow *wxScrolledWindow::GetTargetWindow()
+wxWindow *wxScrolledWindow::GetTargetWindow() const
{
return m_targetWindow;
}
// Override this function if you don't want to have wxScrolledWindow
// automatically change the origin according to the scroll position.
-void wxScrolledWindow::PrepareDC(wxDC& dc)
+void wxScrolledWindow::DoPrepareDC(wxDC& dc)
{
dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
-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 )
m_yScrollLinesPerPage = pageSize;
}
-/*
- * Scroll to given position (scroll position, not pixel position)
- */
+void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
+{
+ int orient = event.GetOrientation();
+
+ int nScrollInc = CalcScrollInc(event);
+ if (nScrollInc == 0) return;
+
+ if (orient == wxHORIZONTAL)
+ {
+ int newPos = m_xScrollPosition + nScrollInc;
+ SetScrollPos(wxHORIZONTAL, newPos, TRUE );
+ }
+ else
+ {
+ int newPos = m_yScrollPosition + nScrollInc;
+ SetScrollPos(wxVERTICAL, newPos, TRUE );
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ m_xScrollPosition += nScrollInc;
+ }
+ else
+ {
+ m_yScrollPosition += nScrollInc;
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ if (m_xScrollingEnabled)
+ m_targetWindow->ScrollWindow(-m_xScrollPixelsPerLine * nScrollInc, 0, (const wxRect *) NULL);
+ else
+ m_targetWindow->Refresh();
+ }
+ else
+ {
+ if (m_yScrollingEnabled)
+ m_targetWindow->ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL);
+ else
+ m_targetWindow->Refresh();
+ }
+}
+
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;
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;
-
+
m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
-
+
+ // Just update the scrollbar, don't send any wxWidgets 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;
-
+
m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
-
+
+ // Just update the scrollbar, don't send any wxWidgets event
+ GtkVDisconnectEvent();
gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
+ GtkVConnectEvent();
}
}
-void wxScrolledWindow::GtkVScroll( float value )
+// TODO: [VH]Scroll functions should be combined
+
+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;
-
+
int y_pos = (int)(value+0.5);
-
+
if (y_pos == m_yScrollPosition)
return;
-
- int old_y = m_yScrollPosition;
- m_yScrollPosition = y_pos;
- m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+ wxEventType command = GtkScrollWinTypeToWx(scroll_type);
+
+ wxScrollWinEvent event( command, y_pos, wxVERTICAL );
+ event.SetEventObject( this );
+ GetEventHandler()->ProcessEvent( event );
}
-void wxScrolledWindow::GtkHScroll( float value )
+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;
-
+
int x_pos = (int)(value+0.5);
-
+
if (x_pos == m_xScrollPosition)
return;
-
- int old_x = m_xScrollPosition;
- m_xScrollPosition = x_pos;
- m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+ wxEventType command = GtkScrollWinTypeToWx(scroll_type);
+
+ wxScrollWinEvent event( command, x_pos, wxHORIZONTAL );
+ event.SetEventObject( this );
+ GetEventHandler()->ProcessEvent( event );
}
void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
m_yScrollingEnabled = y_scroll;
}
-void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
-{
- if ( x )
- *x = m_xScrollPixelsPerLine * m_xScrollLines;
- if ( y )
- *y = m_yScrollPixelsPerLine * m_yScrollLines;
-}
-
// Where the current view starts from
void wxScrolledWindow::GetViewStart (int *x, int *y) const
{
*y = m_yScrollPosition;
}
-void wxScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrolledWindow::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const
{
+ int xs, ys;
+ GetViewStart (& xs, & ys);
+
if ( xx )
- *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
+ *xx = x - xs * m_xScrollPixelsPerLine;
if ( yy )
- *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
+ *yy = y - ys * m_yScrollPixelsPerLine;
}
-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrolledWindow::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
{
+ int xs, ys;
+ GetViewStart (& xs, & ys);
+
if ( xx )
- *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
+ *xx = x + xs * m_xScrollPixelsPerLine;
if ( yy )
- *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
+ *yy = y + ys * m_yScrollPixelsPerLine;
+}
+
+int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
+{
+ int pos = event.GetPosition();
+ int orient = event.GetOrientation();
+
+ int nScrollInc = 0;
+ if (event.GetEventType() == wxEVT_SCROLLWIN_TOP)
+ {
+ if (orient == wxHORIZONTAL)
+ nScrollInc = - m_xScrollPosition;
+ else
+ nScrollInc = - m_yScrollPosition;
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
+ {
+ if (orient == wxHORIZONTAL)
+ nScrollInc = GetVirtualSize().GetWidth() / m_xScrollPixelsPerLine - m_xScrollPosition;
+ else
+ nScrollInc = GetVirtualSize().GetHeight() / m_yScrollPixelsPerLine - m_yScrollPosition;
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
+ {
+ nScrollInc = -1;
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN)
+ {
+ nScrollInc = 1;
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEUP)
+ {
+ if (orient == wxHORIZONTAL)
+ nScrollInc = -GetScrollPageSize(wxHORIZONTAL);
+ else
+ nScrollInc = -GetScrollPageSize(wxVERTICAL);
+ } else
+ if (event.GetEventType() == wxEVT_SCROLLWIN_PAGEDOWN)
+ {
+ if (orient == wxHORIZONTAL)
+ nScrollInc = GetScrollPageSize(wxHORIZONTAL);
+ else
+ nScrollInc = GetScrollPageSize(wxVERTICAL);
+ } else
+ if ((event.GetEventType() == wxEVT_SCROLLWIN_THUMBTRACK) ||
+ (event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE))
+ {
+ if (orient == wxHORIZONTAL)
+ nScrollInc = pos - m_xScrollPosition;
+ else
+ nScrollInc = pos - m_yScrollPosition;
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ if (m_xScrollPixelsPerLine > 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) > max )
+ nScrollInc = max - m_xScrollPosition; // As +ve as we can go
+ }
+ else
+ m_targetWindow->Refresh();
+ }
+ else
+ {
+ if (m_yScrollPixelsPerLine > 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) > 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 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 wxWidgets event
+ GtkHDisconnectEvent();
+ gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
+ GtkHConnectEvent();
+ }
+ else
+ {
+ // Just update the scrollbar, don't send any wxWidgets 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 );
+}
+
+bool wxScrolledWindow::Layout()
+{
+ if (GetSizer() && m_targetWindow == this)
+ {
+ // 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);
+ GetSizer()->SetDimension(x, y, w, h);
+ return TRUE;
+ }
+ else
+ return wxPanel::Layout(); // fall back to default for LayoutConstraints
}
// ----------------------------------------------------------------------------
// Default OnSize resets scrollbars, if any
void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
{
-#if wxUSE_CONSTRAINTS
- if (GetAutoLayout())
- Layout();
-#endif
-
- AdjustScrollbars();
+ if ( m_targetWindow->GetAutoLayout() )
+ {
+ wxSize size = m_targetWindow->GetBestVirtualSize();
+
+ // This will call ::Layout() and ::AdjustScrollbars()
+ SetVirtualSize( size );
+ }
+ else
+ {
+ AdjustScrollbars();
+ }
}
// This calls OnDraw, having adjusted the origin according to the current
szx, szy, // view size (total)
clix, cliy; // view size (on screen)
- ViewStart(&stx, &sty);
+ GetViewStart(&stx, &sty);
GetClientSize(&clix, &cliy);
GetVirtualSize(&szx, &szy);
szy = -1;
}
+ int xScrollOld = GetScrollPos(wxHORIZONTAL),
+ yScrollOld = GetScrollPos(wxVERTICAL);
+
int dsty;
- switch ( event.KeyCode() )
+ switch ( event.GetKeyCode() )
{
case WXK_PAGEUP:
case WXK_PRIOR:
default:
// not for us
event.Skip();
+ return;
+ }
+
+ int xScroll = GetScrollPos(wxHORIZONTAL);
+ if ( xScroll != xScrollOld )
+ {
+ wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, xScroll,
+ wxHORIZONTAL);
+ event.SetEventObject(this);
+ GetEventHandler()->ProcessEvent(event);
+ }
+
+ int yScroll = GetScrollPos(wxVERTICAL);
+ if ( yScroll != yScrollOld )
+ {
+ wxScrollWinEvent event(wxEVT_SCROLLWIN_THUMBTRACK, yScroll,
+ wxVERTICAL);
+ event.SetEventObject(this);
+ GetEventHandler()->ProcessEvent(event);
}
}
+
+
+// vi:sts=4:sw=4:et
projects / wxWidgets.git / blobdiff