X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7798a18ec81d3733082bc60a958fac1d4510faca..b5aaf62e977b828214d65c3712478410fb2c8a05:/src/gtk1/scrolbar.cpp?ds=sidebyside diff --git a/src/gtk1/scrolbar.cpp b/src/gtk1/scrolbar.cpp index 9a0098b3bd..82ad187aa6 100644 --- a/src/gtk1/scrolbar.cpp +++ b/src/gtk1/scrolbar.cpp @@ -1,216 +1,368 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: scrolbar.cpp +// Name: src/gtk1/scrolbar.cpp // Purpose: // Author: Robert Roebling -// Created: 01/02/97 -// Id: -// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem -// Licence: wxWindows licence +// Id: $Id$ +// Copyright: (c) 1998 Robert Roebling +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" -#ifdef __GNUG__ -#pragma implementation "scrolbar.h" -#endif +#if wxUSE_SCROLLBAR #include "wx/scrolbar.h" -#include "wx/utils.h" + +#ifndef WX_PRECOMP + #include "wx/utils.h" + #include "wx/math.h" +#endif + +#include "wx/gtk1/private.h" //----------------------------------------------------------------------------- -// wxScrollBar +// idle system //----------------------------------------------------------------------------- -void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win ) -{ -/* - printf( "OnScroll from " ); - if (win->GetClassInfo() && win->GetClassInfo()->GetClassName()) - printf( win->GetClassInfo()->GetClassName() ); - printf( ".\n" ); -*/ - - if (!win->HasVMT()) return; - - float diff = win->m_adjust->value - win->m_oldPos; - if (fabs(diff) < 0.2) return; - - wxEventType command = wxEVT_NULL; - - float line_step = win->m_adjust->step_increment; - float page_step = win->m_adjust->page_increment; - - if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN; - else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP; - else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN; - else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP; - else command = wxEVT_SCROLL_THUMBTRACK; - - int value = (int)(win->m_adjust->value+0.5); - - int orient = wxHORIZONTAL; - if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxHORIZONTAL; - - wxScrollEvent event( command, win->GetId(), value, orient ); - event.SetEventObject( win ); - win->ProcessEvent( event ); - +extern void wxapp_install_idle_handler(); +extern bool g_isIdle; + +//----------------------------------------------------------------------------- +// data +//----------------------------------------------------------------------------- + +extern bool g_blockEventsOnDrag; +static wxEventType g_currentUpDownEvent = wxEVT_NULL; + +static const float sensitivity = 0.02; + +//----------------------------------------------------------------------------- +// "value_changed" +//----------------------------------------------------------------------------- + +// FIXME: is GtkScrollType really passed to us as 2nd argument? + +extern "C" { +static void gtk_scrollbar_callback( GtkAdjustment *adjust, + SCROLLBAR_CBACK_ARG + wxScrollBar *win ) +{ + if (g_isIdle) wxapp_install_idle_handler(); + + if (!win->m_hasVMT) return; + if (g_blockEventsOnDrag) return; + + float diff = adjust->value - win->m_oldPos; + if (fabs(diff) < sensitivity) return; + + win->m_oldPos = adjust->value; + + wxEventType command = GtkScrollTypeToWx(GET_SCROLL_TYPE(win->m_widget)); + + double dvalue = adjust->value; + int value = (int)(dvalue < 0 ? dvalue - 0.5 : dvalue + 0.5); + + int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; + + // throw a LINEUP / LINEDOWN event if necessary + if (g_currentUpDownEvent != wxEVT_NULL) + { + wxScrollEvent event( g_currentUpDownEvent, win->GetId(), value, orient ); + event.SetEventObject( win ); + win->HandleWindowEvent( event ); + } + + // throw other event (wxEVT_SCROLL_THUMBTRACK) + wxScrollEvent event( command, win->GetId(), value, orient ); + event.SetEventObject( win ); + win->HandleWindowEvent( event ); + /* - wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() ); - cevent.SetEventObject( win ); - win->ProcessEvent( cevent ); + wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() ); + cevent.SetEventObject( win ); + win->ProcessEvent( cevent ); */ -}; +} +} -IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl) +//----------------------------------------------------------------------------- +// "button_press_event" from slider +//----------------------------------------------------------------------------- +extern "C" { +static gint gtk_scrollbar_button_press_callback( GtkRange *widget, + GdkEventButton *gdk_event, + wxScrollBar *win ) +{ + if (g_isIdle) wxapp_install_idle_handler(); -wxScrollBar::wxScrollBar(wxWindow *parent, const wxWindowID id, - const wxPoint& pos, const wxSize& size, - const long style, const wxString& name ) + // check if a LINEUP/LINEDOWN event must be thrown + // I suppose here the size of scrollbar top/bottom buttons is 16px height + if (gdk_event->type == GDK_BUTTON_PRESS && gdk_event->button == 1) + { + int scroll_height, mouse_pos; + + // get the mouse position when the click is done + if (win->HasFlag(wxSB_VERTICAL)) + { + scroll_height = GTK_WIDGET(widget)->allocation.height - 16; + mouse_pos = (int)gdk_event->y; + } + else + { + scroll_height = GTK_WIDGET(widget)->allocation.width - 16; + mouse_pos = (int)gdk_event->x; + } + + // compare mouse position to scrollbar height + if (mouse_pos > scroll_height) + g_currentUpDownEvent = wxEVT_SCROLL_LINEDOWN; + else if (mouse_pos < 16) + g_currentUpDownEvent = wxEVT_SCROLL_LINEUP; + } + + // There is no slider field any more + win->m_isScrolling = (gdk_event->window == widget->slider); + + return FALSE; +} +} + +//----------------------------------------------------------------------------- +// "button_release_event" from slider +//----------------------------------------------------------------------------- + +extern "C" { +static gint +gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget), + GdkEventButton *WXUNUSED(gdk_event), + wxScrollBar *win ) { - Create( parent, id, pos, size, style, name ); -}; + if (g_isIdle) + wxapp_install_idle_handler(); + + if (win->m_isScrolling) + { + wxEventType command = wxEVT_SCROLL_THUMBRELEASE; + int value = (int)ceil(win->m_adjust->value); + int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; + + wxScrollEvent event( command, win->GetId(), value, orient ); + event.SetEventObject( win ); + win->HandleWindowEvent( event ); + } + + win->m_isScrolling = false; -wxScrollBar::~wxScrollBar(void) + // reset the LINEUP/LINEDOWN flag when the mouse button is released + g_currentUpDownEvent = wxEVT_NULL; + + return FALSE; +} +} + +//----------------------------------------------------------------------------- +// wxScrollBar +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl) + +wxScrollBar::~wxScrollBar() { -}; +} -bool wxScrollBar::Create(wxWindow *parent, const wxWindowID id, +bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size, - const long style, const wxString& name ) -{ - m_needParent = TRUE; - - PreCreation( parent, id, pos, size, style, name ); - - m_oldPos = 0.0; - - if (style & wxSB_VERTICAL == wxSB_VERTICAL) - m_widget = gtk_hscrollbar_new( NULL ); - else - m_widget = gtk_vscrollbar_new( NULL ); - - m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) ); - - gtk_signal_connect (GTK_OBJECT (m_adjust), "value_changed", - (GtkSignalFunc) gtk_scrollbar_callback, (gpointer) this ); - - PostCreation(); - - Show( TRUE ); - - return TRUE; -}; - -int wxScrollBar::GetPosition(void) const -{ - return (int)(m_adjust->value+0.5); -}; + long style, const wxValidator& validator, const wxString& name ) +{ + m_needParent = true; + m_acceptsFocus = true; + + if (!PreCreation( parent, pos, size ) || + !CreateBase( parent, id, pos, size, style, validator, name )) + { + wxFAIL_MSG( wxT("wxScrollBar creation failed") ); + return false; + } + + m_oldPos = 0.0; + + if ((style & wxSB_VERTICAL) == wxSB_VERTICAL) + m_widget = gtk_vscrollbar_new( NULL ); + else + m_widget = gtk_hscrollbar_new( NULL ); + + m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) ); + + gtk_signal_connect( GTK_OBJECT(m_adjust), + "value_changed", + (GtkSignalFunc) gtk_scrollbar_callback, + (gpointer) this ); + gtk_signal_connect( GTK_OBJECT(m_widget), + "button_press_event", + (GtkSignalFunc)gtk_scrollbar_button_press_callback, + (gpointer) this ); + gtk_signal_connect( GTK_OBJECT(m_widget), + "button_release_event", + (GtkSignalFunc)gtk_scrollbar_button_release_callback, + (gpointer) this ); + + m_parent->DoAddChild( this ); + + PostCreation(size); + + return true; +} + +int wxScrollBar::GetThumbPosition() const +{ + double val = m_adjust->value; + return (int)(val < 0 ? val - 0.5 : val + 0.5); +} int wxScrollBar::GetThumbSize() const { - return (int)(m_adjust->page_size+0.5); -}; + return (int)(m_adjust->page_size+0.5); +} int wxScrollBar::GetPageSize() const { - return (int)(m_adjust->page_increment+0.5); -}; + return (int)(m_adjust->page_increment+0.5); +} int wxScrollBar::GetRange() const { - return (int)(m_adjust->upper+0.5); -}; - -void wxScrollBar::SetPosition( const int viewStart ) -{ - float fpos = (float)viewStart; - m_oldPos = fpos; - if (fabs(fpos-m_adjust->value) < 0.2) return; - m_adjust->value = fpos; - - gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); -}; - -void wxScrollBar::SetScrollbar( const int position, const int thumbSize, const int range, const int pageSize, - const bool WXUNUSED(refresh) ) -{ - float fpos = (float)position; - m_oldPos = fpos; - float frange = (float)range; - float fthumb = (float)thumbSize; - float fpage = (float)pageSize; - - if ((fabs(fpos-m_adjust->value) < 0.2) && - (fabs(frange-m_adjust->upper) < 0.2) && - (fabs(fthumb-m_adjust->page_size) < 0.2) && - (fabs(fpage-m_adjust->page_increment) < 0.2)) - return; - - m_adjust->lower = 0.0; - m_adjust->upper = frange; - m_adjust->value = fpos; - m_adjust->step_increment = 1.0; - m_adjust->page_increment = (float)(wxMax(fpage-2,0)); - m_adjust->page_size = fthumb; - - gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); -}; - -// Backward compatibility -int wxScrollBar::GetValue(void) const -{ - return GetPosition(); -}; - -void wxScrollBar::SetValue( const int viewStart ) -{ - SetPosition( viewStart ); -}; + return (int)(m_adjust->upper+0.5); +} + +void wxScrollBar::SetThumbPosition( int viewStart ) +{ + if (m_isScrolling) return; + + float fpos = (float)viewStart; + m_oldPos = fpos; + if (fabs(fpos-m_adjust->value) < 0.2) return; + m_adjust->value = fpos; + + gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust), + (GtkSignalFunc) gtk_scrollbar_callback, + (gpointer) this ); + + gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); + + gtk_signal_connect( GTK_OBJECT(m_adjust), + "value_changed", + (GtkSignalFunc) gtk_scrollbar_callback, + (gpointer) this ); +} + +void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize, + bool WXUNUSED(refresh) ) +{ + float fpos = (float)position; + float frange = (float)range; + float fthumb = (float)thumbSize; + float fpage = (float)pageSize; + + if ((fabs(frange-m_adjust->upper) < 0.2) && + (fabs(fthumb-m_adjust->page_size) < 0.2) && + (fabs(fpage-m_adjust->page_increment) < 0.2)) + { + SetThumbPosition( position ); + return; + } + + m_oldPos = fpos; + + m_adjust->lower = 0.0; + m_adjust->upper = frange; + m_adjust->value = fpos; + m_adjust->step_increment = 1.0; + m_adjust->page_increment = (float)(wxMax(fpage,0)); + m_adjust->page_size = fthumb; + + gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); +} + +/* Backward compatibility */ +int wxScrollBar::GetValue() const +{ + return GetThumbPosition(); +} + +void wxScrollBar::SetValue( int viewStart ) +{ + SetThumbPosition( viewStart ); +} void wxScrollBar::GetValues( int *viewStart, int *viewLength, int *objectLength, int *pageLength ) const { - int pos = (int)(m_adjust->value+0.5); - int thumb = (int)(m_adjust->page_size+0.5); - int page = (int)(m_adjust->page_increment+0.5); - int range = (int)(m_adjust->upper+0.5); - - *viewStart = pos; - *viewLength = range; - *objectLength = thumb; - *pageLength = page; -}; + int pos = (int)(m_adjust->value+0.5); + int thumb = (int)(m_adjust->page_size+0.5); + int page = (int)(m_adjust->page_increment+0.5); + int range = (int)(m_adjust->upper+0.5); + + *viewStart = pos; + *viewLength = range; + *objectLength = thumb; + *pageLength = page; +} int wxScrollBar::GetViewLength() const { - return (int)(m_adjust->upper+0.5); -}; + return (int)(m_adjust->upper+0.5); +} int wxScrollBar::GetObjectLength() const { - return (int)(m_adjust->page_size+0.5); -}; + return (int)(m_adjust->page_size+0.5); +} + +void wxScrollBar::SetPageSize( int pageLength ) +{ + int pos = (int)(m_adjust->value+0.5); + int thumb = (int)(m_adjust->page_size+0.5); + int range = (int)(m_adjust->upper+0.5); + SetScrollbar( pos, thumb, range, pageLength ); +} + +void wxScrollBar::SetObjectLength( int objectLength ) +{ + int pos = (int)(m_adjust->value+0.5); + int page = (int)(m_adjust->page_increment+0.5); + int range = (int)(m_adjust->upper+0.5); + SetScrollbar( pos, objectLength, range, page ); +} + +void wxScrollBar::SetViewLength( int viewLength ) +{ + int pos = (int)(m_adjust->value+0.5); + int thumb = (int)(m_adjust->page_size+0.5); + int page = (int)(m_adjust->page_increment+0.5); + SetScrollbar( pos, thumb, viewLength, page ); +} -void wxScrollBar::SetPageSize( const int pageLength ) +bool wxScrollBar::IsOwnGtkWindow( GdkWindow *window ) { - int pos = (int)(m_adjust->value+0.5); - int thumb = (int)(m_adjust->page_size+0.5); - int range = (int)(m_adjust->upper+0.5); - SetScrollbar( pos, thumb, range, pageLength ); -}; + GtkRange *range = GTK_RANGE(m_widget); + return ( (window == GTK_WIDGET(range)->window) + || (window == range->trough) + || (window == range->slider) + || (window == range->step_forw) + || (window == range->step_back) + ); +} -void wxScrollBar::SetObjectLength( const int objectLength ) +wxSize wxScrollBar::DoGetBestSize() const { - int pos = (int)(m_adjust->value+0.5); - int page = (int)(m_adjust->page_increment+0.5); - int range = (int)(m_adjust->upper+0.5); - SetScrollbar( pos, objectLength, range, page ); -}; + return wxControl::DoGetBestSize(); +} -void wxScrollBar::SetViewLength( const int viewLength ) +// static +wxVisualAttributes +wxScrollBar::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) { - int pos = (int)(m_adjust->value+0.5); - int thumb = (int)(m_adjust->page_size+0.5); - int page = (int)(m_adjust->page_increment+0.5); - SetScrollbar( pos, thumb, viewLength, page ); -}; + return GetDefaultAttributesFromGTKWidget(gtk_vscrollbar_new); +} +#endif // wxUSE_SCROLLBAR