X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c67daf87774c71ae9f73af9969008af220e52a11..0daf5e6be21cf6e491447adff8f3c1aad440c456:/src/gtk/scrolbar.cpp diff --git a/src/gtk/scrolbar.cpp b/src/gtk/scrolbar.cpp index de1cb7a888..00ea880973 100644 --- a/src/gtk/scrolbar.cpp +++ b/src/gtk/scrolbar.cpp @@ -1,211 +1,262 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: scrolbar.cpp +// Name: src/gtk/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" -//----------------------------------------------------------------------------- -// data -//----------------------------------------------------------------------------- +#ifndef WX_PRECOMP + #include "wx/utils.h" +#endif -extern bool g_blockEventsOnDrag; +#include "wx/gtk/private.h" //----------------------------------------------------------------------------- -// wxScrollBar +// "value_changed" from scrollbar //----------------------------------------------------------------------------- -static void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win ) -{ - if (!win->HasVMT()) return; - if (g_blockEventsOnDrag) 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->GetEventHandler()->ProcessEvent( event ); - -/* - wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() ); - cevent.SetEventObject( win ); - win->ProcessEvent( cevent ); -*/ +extern "C" { +static void +gtk_value_changed(GtkRange* range, wxScrollBar* win) +{ + wxEventType eventType = win->GetScrollEventType(range); + if (eventType != wxEVT_NULL) + { + const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; + const int i = orient == wxVERTICAL; + const int value = win->GetThumbPosition(); + wxScrollEvent event(eventType, win->GetId(), value, orient); + event.SetEventObject(win); + win->m_blockValueChanged[i] = true; + win->GetEventHandler()->ProcessEvent(event); + if (!win->m_isScrolling) + { + wxScrollEvent event(wxEVT_SCROLL_CHANGED, win->GetId(), value, orient); + event.SetEventObject(win); + win->GetEventHandler()->ProcessEvent(event); + } + win->m_blockValueChanged[i] = false; + } +} } -IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl) +//----------------------------------------------------------------------------- +// "button_press_event" from scrollbar +//----------------------------------------------------------------------------- -wxScrollBar::~wxScrollBar(void) +extern "C" { +static gboolean +gtk_button_press_event(GtkRange*, GdkEventButton*, wxScrollBar* win) { + // don't need to install idle handler, its done from "event" signal + + win->m_mouseButtonDown = true; + return false; +} } -bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, - const wxPoint& pos, const wxSize& size, - long style, const wxValidator& validator, const wxString& name ) +//----------------------------------------------------------------------------- +// "event_after" from scrollbar +//----------------------------------------------------------------------------- + +extern "C" { +static void +gtk_event_after(GtkRange* range, GdkEvent* event, wxScrollBar* win) { - m_needParent = TRUE; - - PreCreation( parent, id, pos, size, style, name ); - - SetValidator( validator ); + if (event->type == GDK_BUTTON_RELEASE) + { + g_signal_handlers_block_by_func(range, (void*)gtk_event_after, win); - m_oldPos = 0.0; + const int value = win->GetThumbPosition(); + const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; - if (style & wxSB_VERTICAL == wxSB_VERTICAL) - m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL ); - else - m_widget = gtk_vscrollbar_new( (GtkAdjustment *) 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; + wxScrollEvent event(wxEVT_SCROLL_THUMBRELEASE, win->GetId(), value, orient); + event.SetEventObject(win); + win->GetEventHandler()->ProcessEvent(event); + + wxScrollEvent event2(wxEVT_SCROLL_CHANGED, win->GetId(), value, orient); + event2.SetEventObject(win); + win->GetEventHandler()->ProcessEvent(event2); + } +} } -int wxScrollBar::GetPosition(void) const +//----------------------------------------------------------------------------- +// "button_release_event" from scrollbar +//----------------------------------------------------------------------------- + +extern "C" { +static gboolean +gtk_button_release_event(GtkRange* range, GdkEventButton*, wxScrollBar* win) { - return (int)(m_adjust->value+0.5); + // don't need to install idle handler, its done from "event" signal + + win->m_mouseButtonDown = false; + // If thumb tracking + if (win->m_isScrolling) + { + win->m_isScrolling = false; + // Hook up handler to send thumb release event after this emission is finished. + // To allow setting scroll position from event handler, sending event must + // be deferred until after the GtkRange handler for this signal has run + g_signal_handlers_unblock_by_func(range, (void*)gtk_event_after, win); + } + + return false; +} } -int wxScrollBar::GetThumbSize() const +//----------------------------------------------------------------------------- +// wxScrollBar +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl) + +wxScrollBar::wxScrollBar() { - return (int)(m_adjust->page_size+0.5); } -int wxScrollBar::GetPageSize() const +wxScrollBar::~wxScrollBar() { - return (int)(m_adjust->page_increment+0.5); } -int wxScrollBar::GetRange() const +bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, + const wxPoint& pos, const wxSize& size, + long style, const wxValidator& validator, const wxString& name ) { - return (int)(m_adjust->upper+0.5); + 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; + } + + const bool isVertical = (style & wxSB_VERTICAL) != 0; + if (isVertical) + m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL ); + else + m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL ); + + m_scrollBar[int(isVertical)] = (GtkRange*)m_widget; + + g_signal_connect(m_widget, "value_changed", + G_CALLBACK(gtk_value_changed), this); + g_signal_connect(m_widget, "button_press_event", + G_CALLBACK(gtk_button_press_event), this); + g_signal_connect(m_widget, "button_release_event", + G_CALLBACK(gtk_button_release_event), this); + + gulong handler_id; + handler_id = g_signal_connect( + m_widget, "event_after", G_CALLBACK(gtk_event_after), this); + g_signal_handler_block(m_widget, handler_id); + + m_parent->DoAddChild( this ); + + PostCreation(size); + + return true; } -void wxScrollBar::SetPosition( int viewStart ) +int wxScrollBar::GetThumbPosition() const { - 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" ); + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + return int(adj->value + 0.5); } -void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize, - bool WXUNUSED(refresh) ) +int wxScrollBar::GetThumbSize() const { - 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" ); + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + return int(adj->page_size); } -// Backward compatibility -int wxScrollBar::GetValue(void) const +int wxScrollBar::GetPageSize() const { - return GetPosition(); + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + return int(adj->page_increment); } -void wxScrollBar::SetValue( int viewStart ) +int wxScrollBar::GetRange() const { - SetPosition( viewStart ); + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + return int(adj->upper); } -void wxScrollBar::GetValues( int *viewStart, int *viewLength, int *objectLength, int *pageLength ) const +void wxScrollBar::SetThumbPosition( int viewStart ) { - 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; + if (GetThumbPosition() != viewStart) + { + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + const int i = (GtkRange*)m_widget == m_scrollBar[1]; + const int max = int(adj->upper - adj->page_size); + if (viewStart > max) + viewStart = max; + if (viewStart < 0) + viewStart = 0; + + m_scrollPos[i] = + adj->value = viewStart; + // If a "value_changed" signal emission is not already in progress + if (!m_blockValueChanged[i]) + { + gtk_adjustment_value_changed(adj); + } + } } -int wxScrollBar::GetViewLength() const +void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize, bool) { - return (int)(m_adjust->upper+0.5); + if (range == 0) + { + // GtkRange requires upper > lower + range = + thumbSize = 1; + } + if (position > range - thumbSize) + position = range - thumbSize; + if (position < 0) + position = 0; + GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment; + adj->step_increment = 1; + adj->page_increment = pageSize; + adj->page_size = thumbSize; + adj->upper = range; + SetThumbPosition(position); + gtk_adjustment_changed(adj); } -int wxScrollBar::GetObjectLength() const +void wxScrollBar::SetPageSize( int pageLength ) { - return (int)(m_adjust->page_size+0.5); + SetScrollbar(GetThumbPosition(), GetThumbSize(), GetRange(), pageLength); } -void wxScrollBar::SetPageSize( int pageLength ) +void wxScrollBar::SetRange(int range) { - 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 ); + SetScrollbar(GetThumbPosition(), GetThumbSize(), range, GetPageSize()); } -void wxScrollBar::SetObjectLength( int objectLength ) +GdkWindow *wxScrollBar::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) 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 GTK_WIDGET(GTK_RANGE(m_widget))->window; } -void wxScrollBar::SetViewLength( 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