// Name: src/gtk/scrolbar.cpp
// Purpose:
// Author: Robert Roebling
-// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/scrolbar.h"
-#include "wx/utils.h"
-#include "wx/math.h"
+#ifndef WX_PRECOMP
+ #include "wx/utils.h"
+#endif
+
#include "wx/gtk/private.h"
//-----------------------------------------------------------------------------
-// idle system
+// "value_changed" from scrollbar
//-----------------------------------------------------------------------------
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
-
-//-----------------------------------------------------------------------------
-// data
-//-----------------------------------------------------------------------------
+extern "C" {
+static void
+gtk_value_changed(GtkRange* range, wxScrollBar* win)
+{
+ wxEventType eventType = win->GTKGetScrollEventType(range);
+ if (eventType != wxEVT_NULL)
+ {
+ const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
+ const int value = win->GetThumbPosition();
+ const int id = win->GetId();
-extern bool g_blockEventsOnDrag;
-static wxEventType g_currentUpDownEvent = wxEVT_NULL;
+ // first send the specific event for the user action
+ wxScrollEvent evtSpec(eventType, id, value, orient);
+ evtSpec.SetEventObject(win);
+ win->HandleWindowEvent(evtSpec);
-static const float sensitivity = 0.02;
+ if (!win->m_isScrolling)
+ {
+ // and if it's over also send a general "changed" event
+ wxScrollEvent evtChanged(wxEVT_SCROLL_CHANGED, id, value, orient);
+ evtChanged.SetEventObject(win);
+ win->HandleWindowEvent(evtChanged);
+ }
+ }
+}
+}
//-----------------------------------------------------------------------------
-// "value_changed"
+// "button_press_event" from scrollbar
//-----------------------------------------------------------------------------
-// FIXME: is GtkScrollType really passed to us as 2nd argument?
-
extern "C" {
-static void gtk_scrollbar_callback( GtkAdjustment *adjust,
- wxScrollBar *win )
+static gboolean
+gtk_button_press_event(GtkRange*, GdkEventButton*, 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(GTK_SCROLL_JUMP);
-
- 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->GetEventHandler()->ProcessEvent( event );
- }
-
- // throw other event (wxEVT_SCROLL_THUMBTRACK)
- 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 );
-*/
+ win->m_mouseButtonDown = true;
+ return false;
}
}
//-----------------------------------------------------------------------------
-// "button_press_event" from slider
+// "event_after" from scrollbar
//-----------------------------------------------------------------------------
+
extern "C" {
-static gint gtk_scrollbar_button_press_callback( GtkRange *widget,
- GdkEventButton *gdk_event,
- wxScrollBar *win )
+static void
+gtk_event_after(GtkRange* range, GdkEvent* event, wxScrollBar* win)
{
- if (g_isIdle) wxapp_install_idle_handler();
-
- // 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)
+ if (event->type == GDK_BUTTON_RELEASE)
{
- int scroll_height, mouse_pos;
+ g_signal_handlers_block_by_func(range, (void*)gtk_event_after, win);
- // 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;
- }
+ const int value = win->GetThumbPosition();
+ const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
+ const int id = win->GetId();
- // 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;
- }
+ wxScrollEvent evtRel(wxEVT_SCROLL_THUMBRELEASE, id, value, orient);
+ evtRel.SetEventObject(win);
+ win->HandleWindowEvent(evtRel);
- return FALSE;
+ wxScrollEvent evtChanged(wxEVT_SCROLL_CHANGED, id, value, orient);
+ evtChanged.SetEventObject(win);
+ win->HandleWindowEvent(evtChanged);
+ }
}
}
//-----------------------------------------------------------------------------
-// "button_release_event" from slider
+// "button_release_event" from scrollbar
//-----------------------------------------------------------------------------
extern "C" {
-static gint
-gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget),
- GdkEventButton *WXUNUSED(gdk_event),
- wxScrollBar *win )
+static gboolean
+gtk_button_release_event(GtkRange* range, GdkEventButton*, wxScrollBar* win)
{
- if (g_isIdle)
- wxapp_install_idle_handler();
-
+ win->m_mouseButtonDown = false;
+ // If thumb tracking
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->GetEventHandler()->ProcessEvent( event );
+ 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);
}
- win->m_isScrolling = false;
-
- // reset the LINEUP/LINEDOWN flag when the mouse button is released
- g_currentUpDownEvent = wxEVT_NULL;
-
- return FALSE;
+ return false;
}
}
// wxScrollBar
//-----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl)
+wxScrollBar::wxScrollBar()
+{
+}
wxScrollBar::~wxScrollBar()
{
const wxPoint& pos, const wxSize& size,
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 ))
{
return false;
}
- m_oldPos = 0.0;
+ const bool isVertical = (style & wxSB_VERTICAL) != 0;
+ m_widget = gtk_scrollbar_new(GtkOrientation(isVertical), NULL);
+ g_object_ref(m_widget);
- if ((style & wxSB_VERTICAL) == wxSB_VERTICAL)
- m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL );
- else
- m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
+ m_scrollBar[0] = (GtkRange*)m_widget;
- m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
+ g_signal_connect_after(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);
- g_signal_connect (m_adjust, "value_changed",
- G_CALLBACK (gtk_scrollbar_callback), this);
- g_signal_connect (m_widget, "button_press_event",
- G_CALLBACK (gtk_scrollbar_button_press_callback),
- this);
- g_signal_connect (m_widget, "button_release_event",
- G_CALLBACK (gtk_scrollbar_button_release_callback),
- 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 );
int wxScrollBar::GetThumbPosition() const
{
- double val = m_adjust->value;
- return (int)(val < 0 ? val - 0.5 : val + 0.5);
+ return wxRound(gtk_range_get_value(GTK_RANGE(m_widget)));
}
int wxScrollBar::GetThumbSize() const
{
- return (int)(m_adjust->page_size+0.5);
+ GtkAdjustment* adj = gtk_range_get_adjustment(GTK_RANGE(m_widget));
+ return int(gtk_adjustment_get_page_size(adj));
}
int wxScrollBar::GetPageSize() const
{
- return (int)(m_adjust->page_increment+0.5);
+ GtkAdjustment* adj = gtk_range_get_adjustment(GTK_RANGE(m_widget));
+ return int(gtk_adjustment_get_page_increment(adj));
}
int wxScrollBar::GetRange() const
{
- return (int)(m_adjust->upper+0.5);
+ GtkAdjustment* adj = gtk_range_get_adjustment(GTK_RANGE(m_widget));
+ return int(gtk_adjustment_get_upper(adj));
}
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;
-
- g_signal_handlers_disconnect_by_func (m_adjust,
- (gpointer) gtk_scrollbar_callback,
- this);
+ if (GetThumbPosition() != viewStart)
+ {
+ g_signal_handlers_block_by_func(m_widget,
+ (gpointer)gtk_value_changed, this);
- g_signal_emit_by_name (m_adjust, "value_changed");
+ gtk_range_set_value((GtkRange*)m_widget, viewStart);
+ m_scrollPos[0] = gtk_range_get_value((GtkRange*)m_widget);
- g_signal_connect (m_adjust, "value_changed",
- G_CALLBACK (gtk_scrollbar_callback), this);
+ g_signal_handlers_unblock_by_func(m_widget,
+ (gpointer)gtk_value_changed, this);
+ }
}
-void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize,
- bool WXUNUSED(refresh) )
+void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize, bool)
{
- 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))
+ if (range == 0)
{
- SetThumbPosition( position );
- return;
+ // GtkRange requires upper > lower
+ range =
+ thumbSize = 1;
}
-
- 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;
-
- g_signal_emit_by_name (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 wxScrollBar::GetViewLength() const
-{
- return (int)(m_adjust->upper+0.5);
-}
-
-int wxScrollBar::GetObjectLength() const
-{
- return (int)(m_adjust->page_size+0.5);
+ g_signal_handlers_block_by_func(m_widget, (void*)gtk_value_changed, this);
+ GtkRange* widget = GTK_RANGE(m_widget);
+ gtk_adjustment_set_page_size(gtk_range_get_adjustment(widget), thumbSize);
+ gtk_range_set_increments(widget, 1, pageSize);
+ gtk_range_set_range(widget, 0, range);
+ gtk_range_set_value(widget, position);
+ m_scrollPos[0] = gtk_range_get_value(widget);
+ g_signal_handlers_unblock_by_func(m_widget, (void*)gtk_value_changed, this);
}
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 );
+ SetScrollbar(GetThumbPosition(), GetThumbSize(), GetRange(), pageLength);
}
-void wxScrollBar::SetObjectLength( int objectLength )
+void wxScrollBar::SetRange(int range)
{
- 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 );
-}
-
-bool wxScrollBar::IsOwnGtkWindow( GdkWindow *window )
-{
- GtkRange *range = GTK_RANGE(m_widget);
- return ( (window == GTK_WIDGET(range)->window) );
-}
-
-wxSize wxScrollBar::DoGetBestSize() const
-{
- return wxControl::DoGetBestSize();
+ SetScrollbar(GetThumbPosition(), GetThumbSize(), range, GetPageSize());
}
// static
wxVisualAttributes
wxScrollBar::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
- return GetDefaultAttributesFromGTKWidget(gtk_vscrollbar_new);
+ return GetDefaultAttributesFromGTKWidget(gtk_scrollbar_new(GTK_ORIENTATION_VERTICAL, NULL));
}
-#endif
+#endif // wxUSE_SCROLLBAR
projects / wxWidgets.git / blobdiff