preserve type when loaded image is rescaled, #11543

[wxWidgets.git] / src / univ / slider.cpp

diff --git a/src/univ/slider.cpp b/src/univ/slider.cpp
index 50147c8c2e466c6d856fbda4f465ee61bce01aae..8dbb9abf0052ffe7d738d708117d21c8efe39301 100644 (file)
--- a/src/univ/slider.cpp
+++ b/src/univ/slider.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        univ/slider.cpp
+// Name:        src/univ/slider.cpp

 // Purpose:     implementation of the universal version of wxSlider
 // Author:      Vadim Zeitlin
 // Modified by:
 // Purpose:     implementation of the universal version of wxSlider
 // Author:      Vadim Zeitlin
 // Modified by:


@@ -48,18 +48,43 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#ifndef WX_PRECOMP
-    #include "wx/dc.h"
-#endif
+#if wxUSE_SLIDER

 
 #include "wx/slider.h"
 
 
 #include "wx/slider.h"
 

-#if wxUSE_SLIDER
+#ifndef WX_PRECOMP
+    #include "wx/dc.h"
+#endif

 
 #include "wx/univ/renderer.h"
 #include "wx/univ/inphand.h"
 #include "wx/univ/theme.h"
 
 
 #include "wx/univ/renderer.h"
 #include "wx/univ/inphand.h"
 #include "wx/univ/theme.h"
 

+// ----------------------------------------------------------------------------
+// wxStdSliderInputHandler: default slider input handling
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxStdSliderInputHandler : public wxStdInputHandler
+{
+public:
+    // default ctor
+    wxStdSliderInputHandler(wxInputHandler *inphand)
+        : wxStdInputHandler(inphand)
+    {
+    }
+
+    // base class methods
+    virtual bool HandleKey(wxInputConsumer *consumer,
+                           const wxKeyEvent& event,
+                           bool pressed);
+    virtual bool HandleMouse(wxInputConsumer *consumer,
+                             const wxMouseEvent& event);
+    virtual bool HandleMouseMove(wxInputConsumer *consumer,
+                                 const wxMouseEvent& event);
+
+    virtual bool HandleFocus(wxInputConsumer *consumer, const wxFocusEvent& event);
+};
+

 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------


@@ -146,7 +171,7 @@ bool wxSlider::Create(wxWindow *parent,
 
     // call this after setting the range as the best size depends (at least if
     // we have wxSL_LABELS style) on the range
 
     // call this after setting the range as the best size depends (at least if
     // we have wxSL_LABELS style) on the range

-    SetBestSize(size);
+    SetInitialSize(size);

 
     CreateInputHandler(wxINP_HANDLER_SLIDER);
 
 
     CreateInputHandler(wxINP_HANDLER_SLIDER);
 


@@ -180,21 +205,26 @@ bool wxSlider::ChangeValueBy(int inc)
 bool wxSlider::ChangeValueTo(int value)
 {
     // check if the value is going to change at all
 bool wxSlider::ChangeValueTo(int value)
 {
     // check if the value is going to change at all

-    if (value == m_value) return false;
+    if (value == m_value)
+        return false;

 
     // this method is protected and we should only call it with normalized
     // value!
 
     // this method is protected and we should only call it with normalized
     // value!

-    wxCHECK_MSG( IsInRange(value), false, _T("invalid slider value") );
+    wxCHECK_MSG( IsInRange(value), false, wxT("invalid slider value") );

 
     m_value = value;
 
     Refresh();
 
 
     m_value = value;
 
     Refresh();
 

-    // generate the event
+    // generate the events: both a specific scroll event and a command event
+    wxScrollEvent eventScroll(wxEVT_SCROLL_CHANGED, GetId());
+    eventScroll.SetPosition(m_value);
+    eventScroll.SetEventObject( this );
+    (void)GetEventHandler()->ProcessEvent(eventScroll);
+

     wxCommandEvent event(wxEVT_COMMAND_SLIDER_UPDATED, GetId());
     event.SetInt(m_value);
     event.SetEventObject(this);
     wxCommandEvent event(wxEVT_COMMAND_SLIDER_UPDATED, GetId());
     event.SetInt(m_value);
     event.SetEventObject(this);

-

     (void)GetEventHandler()->ProcessEvent(event);
 
     return true;
     (void)GetEventHandler()->ProcessEvent(event);
 
     return true;


@@ -257,14 +287,14 @@ int wxSlider::GetMax() const
 
 void wxSlider::SetLineSize(int lineSize)
 {
 
 void wxSlider::SetLineSize(int lineSize)
 {

-    wxCHECK_RET( lineSize >= 0, _T("invalid slider line size") );
+    wxCHECK_RET( lineSize >= 0, wxT("invalid slider line size") );

 
     m_lineSize = lineSize;
 }
 
 void wxSlider::SetPageSize(int pageSize)
 {
 
     m_lineSize = lineSize;
 }
 
 void wxSlider::SetPageSize(int pageSize)
 {

-    wxCHECK_RET( pageSize >= 0, _T("invalid slider page size") );
+    wxCHECK_RET( pageSize >= 0, wxT("invalid slider page size") );

 
     m_pageSize = pageSize;
 }
 
     m_pageSize = pageSize;
 }


@@ -293,7 +323,7 @@ int wxSlider::GetPageSize() const
 
 void wxSlider::SetThumbLength(int lenPixels)
 {
 
 void wxSlider::SetThumbLength(int lenPixels)
 {

-    wxCHECK_RET( lenPixels >= 0, _T("invalid slider thumb size") );
+    wxCHECK_RET( lenPixels >= 0, wxT("invalid slider thumb size") );

 
     // use m_thumbSize here directly and not GetThumbLength() to avoid setting
     // it to the default value as we don't need it
 
     // use m_thumbSize here directly and not GetThumbLength() to avoid setting
     // it to the default value as we don't need it


@@ -326,7 +356,7 @@ int wxSlider::GetThumbLength() const
 
 void wxSlider::SetTickFreq(int n, int WXUNUSED(dummy))
 {
 
 void wxSlider::SetTickFreq(int n, int WXUNUSED(dummy))
 {

-    wxCHECK_RET (n > 0, _T("invalid slider tick frequency"));
+    wxCHECK_RET (n > 0, wxT("invalid slider tick frequency"));

 
     if ( n != m_tickFreq )
     {
 
     if ( n != m_tickFreq )
     {


@@ -346,7 +376,7 @@ wxSize wxSlider::CalcLabelSize() const
 
     // there is no sense in trying to calc the labels size if we haven't got
     // any, the caller must check for it
 
     // there is no sense in trying to calc the labels size if we haven't got
     // any, the caller must check for it

-    wxCHECK_MSG( HasLabels(), size, _T("shouldn't be called") );
+    wxCHECK_MSG( HasLabels(), size, wxT("shouldn't be called") );

 
     wxCoord w1, h1, w2, h2;
     GetTextExtent(FormatValue(m_min), &w1, &h1);
 
     wxCoord w1, h1, w2, h2;
     GetTextExtent(FormatValue(m_min), &w1, &h1);


@@ -660,7 +690,7 @@ void wxSlider::CalcThumbRect(const wxRect *rectShaftIn,
 
 wxString wxSlider::FormatValue(int value) const
 {
 
 wxString wxSlider::FormatValue(int value) const
 {

-    return wxString::Format(_T("%d"), value);
+    return wxString::Format(wxT("%d"), value);

 }
 
 void wxSlider::DoDraw(wxControlRenderer *renderer)
 }
 
 void wxSlider::DoDraw(wxControlRenderer *renderer)


@@ -739,52 +769,91 @@ bool wxSlider::PerformAction(const wxControlAction& action,
                              long numArg,
                              const wxString& strArg)
 {
                              long numArg,
                              const wxString& strArg)
 {

+    wxEventType scrollEvent = wxEVT_NULL;
+    int value;
+    bool valueChanged = true;
+

     if ( action == wxACTION_SLIDER_START )
     {
     if ( action == wxACTION_SLIDER_START )
     {

-        ChangeValueTo(m_min);
+        scrollEvent = wxEVT_SCROLL_TOP;
+        value = m_min;

     }
     else if ( action == wxACTION_SLIDER_END )
     {
     }
     else if ( action == wxACTION_SLIDER_END )
     {

-        ChangeValueTo(m_max);
+        scrollEvent = wxEVT_SCROLL_BOTTOM;
+        value = m_max;

     }
     else if ( action == wxACTION_SLIDER_PAGE_CHANGE )
     {
     }
     else if ( action == wxACTION_SLIDER_PAGE_CHANGE )
     {

-        ChangeValueBy(numArg * GetPageSize());
+        value = NormalizeValue(m_value + numArg * GetPageSize());

     }
     else if ( action == wxACTION_SLIDER_LINE_UP )
     {
     }
     else if ( action == wxACTION_SLIDER_LINE_UP )
     {

-        ChangeValueBy(+GetLineSize());
+        scrollEvent = wxEVT_SCROLL_LINEUP;
+        value = NormalizeValue(m_value + +GetLineSize());

     }
     else if ( action == wxACTION_SLIDER_LINE_DOWN )
     {
     }
     else if ( action == wxACTION_SLIDER_LINE_DOWN )
     {

-        ChangeValueBy(-GetLineSize());
+        scrollEvent = wxEVT_SCROLL_LINEDOWN;
+        value = NormalizeValue(m_value + -GetLineSize());

     }
     else if ( action == wxACTION_SLIDER_PAGE_UP )
     {
     }
     else if ( action == wxACTION_SLIDER_PAGE_UP )
     {

-        ChangeValueBy(+GetPageSize());
+        scrollEvent = wxEVT_SCROLL_PAGEUP;
+        value = NormalizeValue(m_value + +GetPageSize());

     }
     else if ( action == wxACTION_SLIDER_PAGE_DOWN )
     {
     }
     else if ( action == wxACTION_SLIDER_PAGE_DOWN )
     {

-        ChangeValueBy(-GetPageSize());
+        scrollEvent = wxEVT_SCROLL_PAGEDOWN;
+        value = NormalizeValue(m_value + -GetPageSize());

     }
     }

-    else if ( action == wxACTION_SLIDER_THUMB_DRAG )
+    else if ( action == wxACTION_SLIDER_THUMB_DRAG ||
+                action == wxACTION_SLIDER_THUMB_MOVE )

     {
     {

-        // no special processing for it
-        return true;
+        scrollEvent = wxEVT_SCROLL_THUMBTRACK;
+
+        // we shouldn't generate a command event about this change but we still
+        // should update our value and the slider appearance
+        valueChanged = false;
+        m_value =
+        value = (int)numArg;
+        Refresh();

     }
     }

-    else if ( action == wxACTION_SLIDER_THUMB_MOVE ||
-              action == wxACTION_SLIDER_THUMB_RELEASE )
+    else if ( action == wxACTION_SLIDER_THUMB_RELEASE )

     {
     {

-        ChangeValueTo((int)numArg);
+        scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
+        value = (int)numArg;

     }
     else
     {
         return wxControl::PerformAction(action, numArg, strArg);
     }
 
     }
     else
     {
         return wxControl::PerformAction(action, numArg, strArg);
     }
 

+    // update wxSlider current value and generate wxCommandEvent, except while
+    // dragging the thumb
+    if ( valueChanged )
+        ChangeValueTo(value);
+
+    // also generate more precise wxScrollEvent if applicable
+    if ( scrollEvent != wxEVT_NULL )
+    {
+        wxScrollEvent event(scrollEvent, GetId());
+        event.SetPosition(value);
+        event.SetEventObject( this );
+        GetEventHandler()->ProcessEvent(event);
+    }
+

     return true;
 }
 
     return true;
 }
 

+/* static */
+wxInputHandler *wxSlider::GetStdInputHandler(wxInputHandler *handlerDef)
+{
+    static wxStdSliderInputHandler s_handler(handlerDef);
+
+    return &s_handler;
+}
+

 // ----------------------------------------------------------------------------
 // wxSlider implementation of wxControlWithThumb interface
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxSlider implementation of wxControlWithThumb interface
 // ----------------------------------------------------------------------------


@@ -796,7 +865,7 @@ wxScrollThumb::Shaft wxSlider::HitTest(const wxPoint& pt) const
     CalcThumbRect(&rectShaft, &rectThumb, NULL);
 
     // check for possible shaft or thumb hit
     CalcThumbRect(&rectShaft, &rectThumb, NULL);
 
     // check for possible shaft or thumb hit

-    if (!rectShaft.Inside(pt) && !rectThumb.Inside(pt))
+    if (!rectShaft.Contains(pt) && !rectThumb.Contains(pt))

     {
         return wxScrollThumb::Shaft_None;
     }
     {
         return wxScrollThumb::Shaft_None;
     }


@@ -941,10 +1010,10 @@ bool wxSlider::OnPageScroll(int pageInc)
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// wxStdSliderButtonInputHandler
+// wxStdSliderInputHandler

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-bool wxStdSliderButtonInputHandler::HandleKey(wxInputConsumer *consumer,
+bool wxStdSliderInputHandler::HandleKey(wxInputConsumer *consumer,

                                               const wxKeyEvent& event,
                                               bool pressed)
 {
                                               const wxKeyEvent& event,
                                               bool pressed)
 {


@@ -973,12 +1042,10 @@ bool wxStdSliderButtonInputHandler::HandleKey(wxInputConsumer *consumer,
                 action = wxACTION_SLIDER_LINE_DOWN;
                 break;
 
                 action = wxACTION_SLIDER_LINE_DOWN;
                 break;
 

-            case WXK_PRIOR:

             case WXK_PAGEUP:
                 action = wxACTION_SLIDER_PAGE_UP;
                 break;
 
             case WXK_PAGEUP:
                 action = wxACTION_SLIDER_PAGE_UP;
                 break;
 

-            case WXK_NEXT:

             case WXK_PAGEDOWN:
                 action = wxACTION_SLIDER_PAGE_DOWN;
                 break;
             case WXK_PAGEDOWN:
                 action = wxACTION_SLIDER_PAGE_DOWN;
                 break;


@@ -995,7 +1062,7 @@ bool wxStdSliderButtonInputHandler::HandleKey(wxInputConsumer *consumer,
     return wxStdInputHandler::HandleKey(consumer, event, pressed);
 }
 
     return wxStdInputHandler::HandleKey(consumer, event, pressed);
 }
 

-bool wxStdSliderButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
+bool wxStdSliderInputHandler::HandleMouse(wxInputConsumer *consumer,

                                                 const wxMouseEvent& event)
 {
     wxSlider *slider = wxStaticCast(consumer->GetInputWindow(), wxSlider);
                                                 const wxMouseEvent& event)
 {
     wxSlider *slider = wxStaticCast(consumer->GetInputWindow(), wxSlider);


@@ -1009,7 +1076,7 @@ bool wxStdSliderButtonInputHandler::HandleMouse(wxInputConsumer *consumer,
     return wxStdInputHandler::HandleMouse(consumer, event);
 }
 
     return wxStdInputHandler::HandleMouse(consumer, event);
 }
 

-bool wxStdSliderButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
+bool wxStdSliderInputHandler::HandleMouseMove(wxInputConsumer *consumer,

                                                     const wxMouseEvent& event)
 {
     wxSlider *slider = wxStaticCast(consumer->GetInputWindow(), wxSlider);
                                                     const wxMouseEvent& event)
 {
     wxSlider *slider = wxStaticCast(consumer->GetInputWindow(), wxSlider);


@@ -1024,10 +1091,10 @@ bool wxStdSliderButtonInputHandler::HandleMouseMove(wxInputConsumer *consumer,
 }
 
 bool
 }
 
 bool

-wxStdSliderButtonInputHandler::HandleFocus(wxInputConsumer * WXUNUSED(consumer),
+wxStdSliderInputHandler::HandleFocus(wxInputConsumer * WXUNUSED(consumer),

                                            const wxFocusEvent& WXUNUSED(event))
 {
                                            const wxFocusEvent& WXUNUSED(event))
 {

-    // slider's appearance changes when it gets/loses focus
+    // slider appearance changes when it gets/loses focus

     return true;
 }
 
     return true;
 }