X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/80810ca399477ce4736bda433996db6a65bbcbd8..47583ac10327986031e89c13b75238fc6f66381c:/src/gtk1/slider.cpp diff --git a/src/gtk1/slider.cpp b/src/gtk1/slider.cpp index c611e0e480..7a7a4f0e6b 100644 --- a/src/gtk1/slider.cpp +++ b/src/gtk1/slider.cpp @@ -1,25 +1,25 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: slider.cpp +// Name: src/gtk1/slider.cpp // Purpose: // Author: Robert Roebling // Id: $Id$ // Copyright: (c) 1998 Robert Roebling -// Licence: wxWindows licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "slider.h" -#endif - -#include "wx/slider.h" +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" #if wxUSE_SLIDER -#include "wx/utils.h" -#include +#include "wx/slider.h" + +#ifndef WX_PRECOMP + #include "wx/utils.h" + #include "wx/math.h" +#endif -#include "gdk/gdk.h" -#include "gtk/gtk.h" +#include "wx/gtk1/private.h" //----------------------------------------------------------------------------- // idle system @@ -32,45 +32,93 @@ extern bool g_isIdle; // data //----------------------------------------------------------------------------- -extern bool g_blockEventsOnDrag; +extern bool g_blockEventsOnDrag; + +// ---------------------------------------------------------------------------- +// helper functions +// ---------------------------------------------------------------------------- + +// compare 2 adjustment values up to some (hardcoded) precision +static inline bool AreSameAdjustValues(double x, double y) +{ + return fabs(x - y) < 0.02; +} + +// process a scroll event +static void +ProcessScrollEvent(wxSlider *win, wxEventType evtType, double dvalue) +{ + int orient = win->GetWindowStyleFlag() & wxSL_VERTICAL ? wxVERTICAL + : wxHORIZONTAL; + + int value = (int)(dvalue < 0 ? dvalue - 0.5 : dvalue + 0.5); + wxScrollEvent event( evtType, win->GetId(), value, orient ); + event.SetEventObject( win ); + win->HandleWindowEvent( event ); + + if ( evtType != wxEVT_SCROLL_THUMBTRACK ) + { + wxScrollEvent event2(wxEVT_SCROLL_CHANGED, win->GetId(), value, orient); + event2.SetEventObject( win ); + win->HandleWindowEvent( event2 ); + } + + wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, win->GetId() ); + cevent.SetEventObject( win ); + cevent.SetInt( value ); + win->HandleWindowEvent( cevent ); +} //----------------------------------------------------------------------------- // "value_changed" //----------------------------------------------------------------------------- -static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win ) +extern "C" { +static void gtk_slider_callback( GtkAdjustment *adjust, + SCROLLBAR_CBACK_ARG + wxSlider *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) < 0.2) return; + const double dvalue = adjust->value; + const double diff = dvalue - win->m_oldPos; + if ( AreSameAdjustValues(diff, 0) ) + return; - win->m_oldPos = adjust->value; + wxEventType evtType; + evtType = GtkScrollTypeToWx(GET_SCROLL_TYPE(win->m_widget)); - GtkRange *range = GTK_RANGE( win->m_widget ); + ProcessScrollEvent(win, evtType, dvalue); - wxEventType command = wxEVT_SCROLL_THUMBTRACK; - if (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLL_LINEUP; - else if (range->scroll_type == GTK_SCROLL_STEP_FORWARD) command = wxEVT_SCROLL_LINEDOWN; - else if (range->scroll_type == GTK_SCROLL_PAGE_BACKWARD) command = wxEVT_SCROLL_PAGEUP; - else if (range->scroll_type == GTK_SCROLL_PAGE_FORWARD) command = wxEVT_SCROLL_PAGEDOWN; + win->m_oldPos = dvalue; +} + +static gint gtk_slider_button_press_callback( GtkWidget * /* widget */, + GdkEventButton * /* gdk_event */, + wxWindowGTK *win) +{ + // indicate that the thumb is being dragged with the mouse + win->m_isScrolling = true; - int value = (int)ceil(adjust->value); + return FALSE; +} - int orient = wxHORIZONTAL; - if ( (win->GetWindowStyleFlag() & wxSB_VERTICAL) == wxSB_VERTICAL) - orient = wxVERTICAL; +static gint gtk_slider_button_release_callback( GtkWidget *scale, + GdkEventButton * /* gdk_event */, + wxSlider *win) +{ + // not scrolling any longer + win->m_isScrolling = false; - wxScrollEvent event( command, win->GetId(), value, orient ); - event.SetEventObject( win ); - win->GetEventHandler()->ProcessEvent( event ); + ProcessScrollEvent(win, wxEVT_SCROLL_THUMBRELEASE, + GTK_RANGE(scale)->adjustment->value); + + return FALSE; +} - wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, win->GetId() ); - cevent.SetEventObject( win ); - win->GetEventHandler()->ProcessEvent( cevent ); } //----------------------------------------------------------------------------- @@ -79,39 +127,32 @@ static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win ) IMPLEMENT_DYNAMIC_CLASS(wxSlider,wxControl) -wxSlider::wxSlider(void) -{ -} - -wxSlider::~wxSlider(void) -{ -} - bool wxSlider::Create(wxWindow *parent, wxWindowID id, int value, int minValue, int maxValue, const wxPoint& pos, const wxSize& size, long style, const wxValidator& validator, const wxString& name ) { - m_acceptsFocus = TRUE; - m_needParent = TRUE; + m_acceptsFocus = true; + m_needParent = true; if (!PreCreation( parent, pos, size ) || !CreateBase( parent, id, pos, size, style, validator, name )) { wxFAIL_MSG( wxT("wxSlider creation failed") ); - return FALSE; + return false; } m_oldPos = 0.0; if (style & wxSL_VERTICAL) - m_widget = gtk_vscale_new( (GtkAdjustment *) NULL ); + m_widget = gtk_vscale_new( NULL ); else - m_widget = gtk_hscale_new( (GtkAdjustment *) NULL ); + m_widget = gtk_hscale_new( NULL ); if (style & wxSL_LABELS) { gtk_scale_set_draw_value( GTK_SCALE( m_widget ), TRUE ); + gtk_scale_set_digits( GTK_SCALE( m_widget ), 0 ); /* labels need more space and too small window will cause junk to appear on the dialog */ @@ -139,9 +180,14 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id, m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) ); - gtk_signal_connect( GTK_OBJECT(m_adjust), - "value_changed", - (GtkSignalFunc) gtk_slider_callback, + GtkEnableEvents(); + gtk_signal_connect( GTK_OBJECT(m_widget), + "button_press_event", + (GtkSignalFunc)gtk_slider_button_press_callback, + (gpointer) this ); + gtk_signal_connect( GTK_OBJECT(m_widget), + "button_release_event", + (GtkSignalFunc)gtk_slider_button_release_callback, (gpointer) this ); SetRange( minValue, maxValue ); @@ -149,35 +195,36 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id, m_parent->DoAddChild( this ); - PostCreation(); + PostCreation(size); - SetBackgroundColour( parent->GetBackgroundColour() ); - - Show( TRUE ); - - return TRUE; + return true; } -int wxSlider::GetValue(void) const +int wxSlider::GetValue() const { - return (int)(m_adjust->value+0.5); + return wxRound(m_adjust->value); } void wxSlider::SetValue( int value ) { - float fpos = (float)value; + double fpos = (double)value; m_oldPos = fpos; - if (fabs(fpos-m_adjust->value) < 0.2) return; + if ( AreSameAdjustValues(fpos, m_adjust->value) ) + return; m_adjust->value = fpos; + GtkDisableEvents(); + gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); + + GtkEnableEvents(); } void wxSlider::SetRange( int minValue, int maxValue ) { - float fmin = (float)minValue; - float fmax = (float)maxValue; + double fmin = (double)minValue; + double fmax = (double)maxValue; if ((fabs(fmin-m_adjust->lower) < 0.2) && (fabs(fmax-m_adjust->upper) < 0.2)) @@ -187,48 +234,62 @@ void wxSlider::SetRange( int minValue, int maxValue ) m_adjust->lower = fmin; m_adjust->upper = fmax; + m_adjust->step_increment = 1.0; + m_adjust->page_increment = ceil((fmax-fmin) / 10.0); + + GtkDisableEvents(); gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); + + GtkEnableEvents(); } -int wxSlider::GetMin(void) const +int wxSlider::GetMin() const { return (int)ceil(m_adjust->lower); } -int wxSlider::GetMax(void) const +int wxSlider::GetMax() const { return (int)ceil(m_adjust->upper); } void wxSlider::SetPageSize( int pageSize ) { - float fpage = (float)pageSize; + double fpage = (double)pageSize; if (fabs(fpage-m_adjust->page_increment) < 0.2) return; m_adjust->page_increment = fpage; + GtkDisableEvents(); + gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); + + GtkEnableEvents(); } -int wxSlider::GetPageSize(void) const +int wxSlider::GetPageSize() const { return (int)ceil(m_adjust->page_increment); } void wxSlider::SetThumbLength( int len ) { - float flen = (float)len; + double flen = (double)len; if (fabs(flen-m_adjust->page_size) < 0.2) return; m_adjust->page_size = flen; + GtkDisableEvents(); + gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); + + GtkEnableEvents(); } -int wxSlider::GetThumbLength(void) const +int wxSlider::GetThumbLength() const { return (int)ceil(m_adjust->page_size); } @@ -237,60 +298,41 @@ void wxSlider::SetLineSize( int WXUNUSED(lineSize) ) { } -int wxSlider::GetLineSize(void) const -{ - return 0; -} - -void wxSlider::SetTick( int WXUNUSED(tickPos) ) -{ -} - -void wxSlider::SetTickFreq( int WXUNUSED(n), int WXUNUSED(pos) ) -{ -} - -int wxSlider::GetTickFreq(void) const -{ - return 0; -} - -void wxSlider::ClearTicks(void) -{ -} - -void wxSlider::SetSelection( int WXUNUSED(minPos), int WXUNUSED(maxPos) ) -{ -} - -int wxSlider::GetSelEnd(void) const +int wxSlider::GetLineSize() const { return 0; } -int wxSlider::GetSelStart(void) const +bool wxSlider::IsOwnGtkWindow( GdkWindow *window ) { - return 0; + 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 wxSlider::ClearSel(void) +void wxSlider::GtkDisableEvents() { + gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust), + GTK_SIGNAL_FUNC(gtk_slider_callback), + (gpointer) this ); } -bool wxSlider::IsOwnGtkWindow( GdkWindow *window ) +void wxSlider::GtkEnableEvents() { - 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) ); + gtk_signal_connect( GTK_OBJECT (m_adjust), + "value_changed", + GTK_SIGNAL_FUNC(gtk_slider_callback), + (gpointer) this ); } -void wxSlider::ApplyWidgetStyle() +// static +wxVisualAttributes +wxSlider::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) { - SetWidgetStyle(); - gtk_widget_set_style( m_widget, m_widgetStyle ); + return GetDefaultAttributesFromGTKWidget(gtk_vscale_new); } -#endif +#endif // wxUSE_SLIDER