X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d9a4f62064559ddf7b88afb1bdcfbdf22893d9a5..caa2490c0fb8053b1d416117a9619695d75af9e4:/src/gtk1/scrolwin.cpp diff --git a/src/gtk1/scrolwin.cpp b/src/gtk1/scrolwin.cpp index 40fd6bed32..79cfe5d3a3 100644 --- a/src/gtk1/scrolwin.cpp +++ b/src/gtk1/scrolwin.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 ///////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "scrolwin.h" #endif @@ -28,13 +28,13 @@ #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 +#include "wx/gtk/private.h" #include "wx/gtk/win_gtk.h" // ---------------------------------------------------------------------------- @@ -59,6 +59,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxPanel) //----------------------------------------------------------------------------- extern bool g_blockEventsOnDrag; +extern bool g_blockEventsOnScroll; //----------------------------------------------------------------------------- // idle system @@ -71,7 +72,10 @@ extern bool g_isIdle; // "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(); @@ -79,15 +83,20 @@ static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust, wxScrol 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(); @@ -95,7 +104,77 @@ static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust, wxScrol 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; +} } //----------------------------------------------------------------------------- @@ -104,8 +183,8 @@ static void gtk_scrolled_window_hscroll_callback( GtkAdjustment *adjust, wxScrol 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; @@ -122,7 +201,7 @@ static void wxInsertChildInScrolledWindow( wxWindow* parent, wxWindow* child ) // wxScrolledWindow creation // ---------------------------------------------------------------------------- -wxScrolledWindow::wxScrolledWindow() +void wxScrolledWindow::Init() { m_xScrollPixelsPerLine = 0; m_yScrollPixelsPerLine = 0; @@ -130,13 +209,12 @@ wxScrolledWindow::wxScrolledWindow() 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, @@ -146,6 +224,8 @@ bool wxScrolledWindow::Create(wxWindow *parent, long style, const wxString& name) { + Init(); + if (!PreCreation( parent, pos, size ) || !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name )) { @@ -154,17 +234,6 @@ bool wxScrolledWindow::Create(wxWindow *parent, } 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; @@ -212,115 +281,271 @@ bool wxScrolledWindow::Create(wxWindow *parent, 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 ) @@ -348,7 +573,7 @@ void wxScrolledWindow::SetScrollPageSize(int orient, int pageSize) void wxScrolledWindow::OnScroll(wxScrollWinEvent& event) { int orient = event.GetOrientation(); - + int nScrollInc = CalcScrollInc(event); if (nScrollInc == 0) return; @@ -390,107 +615,88 @@ void wxScrolledWindow::OnScroll(wxScrollWinEvent& event) 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; - - 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 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; - - 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 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; - GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget); - GtkRange *range = GTK_RANGE(scrolledWindow->hscrollbar); - - wxEventType command = wxEVT_SCROLLWIN_THUMBTRACK; - if (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLLWIN_LINEUP; - else if (range->scroll_type == GTK_SCROLL_STEP_FORWARD) command = wxEVT_SCROLLWIN_LINEDOWN; - 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; + wxEventType command = GtkScrollWinTypeToWx(scroll_type); - 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 ) +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; - GtkScrolledWindow *scrolledWindow = GTK_SCROLLED_WINDOW(m_widget); - GtkRange *range = GTK_RANGE(scrolledWindow->hscrollbar); - - wxEventType command = wxEVT_SCROLLWIN_THUMBTRACK; - if (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLLWIN_LINEUP; - else if (range->scroll_type == GTK_SCROLL_STEP_FORWARD) command = wxEVT_SCROLLWIN_LINEDOWN; - 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; + wxEventType command = GtkScrollWinTypeToWx(scroll_type); - 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) @@ -499,14 +705,6 @@ 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 { @@ -516,20 +714,26 @@ 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) @@ -548,9 +752,9 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) 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) { @@ -587,18 +791,13 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) { 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(); @@ -607,18 +806,13 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) { 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(); @@ -627,6 +821,95 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) 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 +} + // ---------------------------------------------------------------------------- // event handlers // ---------------------------------------------------------------------------- @@ -634,12 +917,17 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event) // 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 @@ -662,7 +950,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) szx, szy, // view size (total) clix, cliy; // view size (on screen) - ViewStart(&stx, &sty); + GetViewStart(&stx, &sty); GetClientSize(&clix, &cliy); GetVirtualSize(&szx, &szy); @@ -687,8 +975,11 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) szy = -1; } + int xScrollOld = GetScrollPos(wxHORIZONTAL), + yScrollOld = GetScrollPos(wxVERTICAL); + int dsty; - switch ( event.KeyCode() ) + switch ( event.GetKeyCode() ) { case WXK_PAGEUP: case WXK_PRIOR: @@ -728,5 +1019,27 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event) 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