Applied patch [ 1178610 ] datectlg.cpp: wxDropdownButton + bug fixes

Jaakko Salli

This patch modifies datectlg.cpp's wxDropdownButton in
such manner that it should be much easier to convert it
into a generic drop button class. Also, it is now more
universal in the respect that it should work on
platforms other than wxMSW and wxGTK (wxBitmapButton
being prime prerequisite).

Plus there are some bug fixes for wxDatePickerCtrlGeneric.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33653 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/datectlg.cpp

@@ -72,23 +72,19 @@ enum
     #define DEFAULT_ITEM_WIDTH 100
 #endif
 
-#ifdef __WXMSW__
+#if defined(__WXMSW__)
     #undef wxUSE_POPUPWIN
     #define wxUSE_POPUPWIN    0  // Popup not working
     #define TXTCTRL_FLAGS     wxNO_BORDER
-    #define BTN_FLAGS         wxNO_BORDER
     #define CALBORDER         0
-    #define RIGHTBUTTONBORDER 4
-    #define TOPBUTTONBORDER   0
-    #define BUTTONBORDER      4
     #define TXTPOSY           1
+#elif defined(__WXGTK__)
+    #define TXTCTRL_FLAGS     0
+    #define CALBORDER         4
+    #define TXTPOSY           0
 #else
     #define TXTCTRL_FLAGS     0
-    #define BTN_FLAGS         wxBU_AUTODRAW
     #define CALBORDER         4
-    #define RIGHTBUTTONBORDER 0
-    #define TOPBUTTONBORDER   0
-    #define BUTTONBORDER      0
     #define TXTPOSY           0
 #endif
 
@@ -97,6 +93,9 @@ enum
 // local classes
 // ----------------------------------------------------------------------------
 
+// This flag indicates that combo box style drop button is to be created
+#define wxBU_COMBO          0x0400
+
 
 class wxDropdownButton : public wxBitmapButton
 {
@@ -109,11 +108,6 @@ public:
                      long style=0,
                      const wxValidator& validator = wxDefaultValidator);
 
-    void Init()
-    {
-        m_borderX = -1;
-        m_borderY = -1;
-    }
     bool Create(wxWindow *parent,
                 wxWindowID id,
                 const wxPoint& pos = wxDefaultPosition,
@@ -121,13 +115,69 @@ public:
                 long style = 0,
                 const wxValidator& validator = wxDefaultValidator);
 
-    void DoMoveWindow(int x, int y, int w, int h);
+    virtual void DoMoveWindow(int x, int y, int w, int h);
 
 protected:
+
+    void OnSize(wxSizeEvent& event);
+    void OnMouseEnter(wxMouseEvent& event);
+    void OnMouseLeave(wxMouseEvent& event);
+
+    void RecreateBitmaps(int w, int h);
+
+    wxBitmap    m_bmpNormal;
+    wxBitmap    m_bmpHot;
+
     int         m_borderX, m_borderY;
+
+    // True if DrawDropArrow should be used instead of DrawComboBoxDropButton
+    bool        m_useDropArrow;
+
+private:
+
+    void Init()
+    {
+        m_borderX = -1;
+        m_borderY = -1;
+    }
+
+    DECLARE_EVENT_TABLE()
+    DECLARE_DYNAMIC_CLASS_NO_COPY(wxDropdownButton)
 };
 
 
+// Below, macro DROPBUT_USEDROPARROW should return false when
+// DrawComboBoxDropButton is to be used to render the entire button.
+// COMBOST is non-zero if wxBU_COMBO was set.
+
+#if defined(__WXMSW__)
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   (COMBOST?false:true)
+    #define DROPBUT_DEFAULT_WIDTH           17
+
+#elif defined(__WXGTK__)
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   true
+    #define DROPBUT_DEFAULT_WIDTH           19
+
+#else
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   true
+    #define DROPBUT_DEFAULT_WIDTH           17
+
+#endif
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxDropdownButton, wxBitmapButton)
+
+
+BEGIN_EVENT_TABLE(wxDropdownButton,wxBitmapButton)
+    EVT_ENTER_WINDOW(wxDropdownButton::OnMouseEnter)
+    EVT_LEAVE_WINDOW(wxDropdownButton::OnMouseLeave)
+    EVT_SIZE(wxDropdownButton::OnSize)
+END_EVENT_TABLE()
+
+
 wxDropdownButton::wxDropdownButton(wxWindow *parent,
                                    wxWindowID id,
                                    const wxPoint& pos,
@@ -144,15 +194,19 @@ bool wxDropdownButton::Create(wxWindow *parent,
                               wxWindowID id,
                               const wxPoint& pos,
                               const wxSize& size,
-                              long WXUNUSED(style),
+                              long style,
                               const wxValidator& validator)
 {
     m_marginX = 0;
     m_marginY = 0;
 
+    m_useDropArrow = DROPBUT_USEDROPARROW(style & wxBU_COMBO);
+
     wxBitmap chkBmp(15,15);  // arbitrary
     if ( !wxBitmapButton::Create(parent, id, chkBmp,
-                                 pos, wxDefaultSize, BTN_FLAGS, validator) )
+                                 pos, wxDefaultSize,
+                                 style | (m_useDropArrow ? wxBU_AUTODRAW : wxNO_BORDER),
+                                 validator) )
         return false;
 
     const wxSize sz = GetSize();
@@ -161,76 +215,121 @@ bool wxDropdownButton::Create(wxWindow *parent,
     m_borderX = sz.x - m_marginX - w;
     m_borderY = sz.y - m_marginY - h;
 
-    w = size.x > 0 ? size.x : sz.x;
+    DoMoveWindow(pos.x, pos.y, size.x, size.y);
-    h = size.y > 0 ? size.y : sz.y;
-
-    DoMoveWindow(pos.x, pos.y, w, h);
 
     return true;
 }
 
 
-void wxDropdownButton::DoMoveWindow(int x, int y, int w, int h)
+void wxDropdownButton::RecreateBitmaps(int w, int h)
 {
-    if (m_borderX >= 0 && m_borderY >= 0 && (w >= 0 || h >= 0))
-    {
     wxMemoryDC dc;
-        if (w < 0)
-              w = GetSize().x;
-#ifdef __WXGTK__
-        else
-            w = m_marginX + m_borderX + 15; // GTK magic size
-#endif
-        if (h < 0)
-            h = GetSize().y;
 
     int borderX = m_marginX + m_borderX;
     int borderY = m_marginY + m_borderY;
     int bw = w - borderX;
     int bh = h - borderY;
-        if (bh < 11) bh=11;
-        if (bw < 9)  bw=9;
 
     wxBitmap bmp(bw, bh);
-        dc.SelectObject(bmp);
+    wxBitmap bmpSel(bw, bh);
+    wxRect r(0,0,w,h);
 
     wxRendererNative& renderer = wxRendererNative::Get();
 
-#ifdef __WXGTK__
+    dc.SelectObject(bmp);
-        wxRect r(-(borderX/2),-(borderY/2),w,h);
+
+    if ( m_useDropArrow )
+    {
+        // Use DrawDropArrow on transparent background.
+
         wxColour magic(255,0,255);
-        dc.SetBrush( wxBrush( magic ) );
+        wxBrush magicBrush(magic);
+        r.x = -(borderX/2);
+        r.y = -(borderY/2);
+
+        dc.SetBrush( magicBrush );
         dc.SetPen( *wxTRANSPARENT_PEN );
         dc.DrawRectangle(0,0,bw,bh);
         renderer.DrawDropArrow(this, dc, r);
+        dc.SelectObject( wxNullBitmap );
         wxMask *mask = new wxMask( bmp, magic );
         bmp.SetMask( mask );
-#else
-        wxRect r(0,0,bw,bh);
-        renderer.DrawComboBoxDropButton(this, dc, r);
-#endif
-        SetBitmapLabel(bmp);
 
-        wxBitmap bmpSel(bw, bh);
         dc.SelectObject(bmpSel);
 
-#ifdef __WXGTK__
+        dc.SetBrush( magicBrush );
-        dc.SetBrush( wxBrush( magic ) );
         dc.SetPen( *wxTRANSPARENT_PEN );
         dc.DrawRectangle(0,0,bw,bh);
         renderer.DrawDropArrow(this, dc, r, wxCONTROL_PRESSED);
+        dc.SelectObject( wxNullBitmap );
         mask = new wxMask( bmpSel, magic );
         bmpSel.SetMask( mask );
-#else
+    }
+    else
+    {
+        // Use DrawComboBoxDropButton for the entire button
+        // (also render extra "hot" button state).
+
+        renderer.DrawComboBoxDropButton(this, dc, r);
+
+        dc.SelectObject(bmpSel);
+
         renderer.DrawComboBoxDropButton(this, dc, r, wxCONTROL_PRESSED);
-#endif
+
-        SetBitmapSelected(bmpSel);
+        wxBitmap bmpHot(bw,bh);
+        dc.SelectObject(bmpHot);
+        renderer.DrawComboBoxDropButton(this, dc, r, wxCONTROL_CURRENT);
+
+        m_bmpNormal = bmp;
+        m_bmpHot = bmpHot;
     }
 
+    SetBitmapLabel(bmp);
+    SetBitmapSelected(bmpSel);
+}
+
+
+void wxDropdownButton::DoMoveWindow(int x, int y, int w, int h)
+{
+    if (w < 0)
+        w = DROPBUT_DEFAULT_WIDTH;
+
     wxBitmapButton::DoMoveWindow(x, y, w, h);
 }
 
 
+void wxDropdownButton::OnSize(wxSizeEvent& event)
+{
+    if ( m_borderX >= 0 && m_borderY >= 0 )
+    {
+        int w, h;
+        GetClientSize(&w,&h);
+
+        if ( w > 1 && h > 1 )
+            RecreateBitmaps(w,h);
+    }
+    event.Skip();
+}
+
+
+void wxDropdownButton::OnMouseEnter(wxMouseEvent& event)
+{
+    if ( !m_useDropArrow )
+        SetBitmapLabel(m_bmpHot);
+
+    event.Skip();
+}
+
+
+void wxDropdownButton::OnMouseLeave(wxMouseEvent& event)
+{
+    if ( !m_useDropArrow )
+        SetBitmapLabel(m_bmpNormal);
+
+    event.Skip();
+}
+
+
 #if wxUSE_POPUPWIN
 
 #include "wx/popupwin.h"
@@ -289,6 +388,7 @@ BEGIN_EVENT_TABLE(wxDatePickerCtrlGeneric, wxDatePickerCtrlBase)
     EVT_BUTTON(CTRLID_BTN, wxDatePickerCtrlGeneric::OnClick)
     EVT_TEXT(CTRLID_TXT, wxDatePickerCtrlGeneric::OnText)
     EVT_CHILD_FOCUS(wxDatePickerCtrlGeneric::OnChildSetFocus)
+    EVT_SIZE(wxDatePickerCtrlGeneric::OnSize)
 END_EVENT_TABLE()
 
 #ifndef wxHAS_NATIVE_DATEPICKCTRL
@@ -330,9 +430,7 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
                    wxFocusEventHandler(wxDatePickerCtrlGeneric::OnKillFocus),
                    NULL, this);
 
-    const int height = m_txt->GetBestSize().y - BUTTONBORDER;
+    m_btn = new wxDropdownButton(this, CTRLID_BTN, wxDefaultPosition, wxDefaultSize, wxBU_COMBO);
-
-    m_btn = new wxDropdownButton(this, CTRLID_BTN, wxDefaultPosition, wxSize(height, height));
 
     m_popup = new wxDatePopupInternal(this);
     m_popup->SetFont(GetFont());
@@ -406,6 +504,8 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
 
     SetBestFittingSize(size);
 
+    SetBackgroundColour(m_txt->GetBackgroundColour());
+
     return true;
 }
 
@@ -448,11 +548,6 @@ bool wxDatePickerCtrlGeneric::Destroy()
 void wxDatePickerCtrlGeneric::DoMoveWindow(int x, int y, int w, int h)
 {
     wxControl::DoMoveWindow(x, y, w, h);
-    wxSize bs=m_btn->GetBestSize();
-    int eh=m_txt->GetBestSize().y;
-
-    m_txt->SetSize(0, TXTPOSY, w-bs.x-RIGHTBUTTONBORDER, h > eh ? eh-TXTPOSY : h-TXTPOSY);
-    m_btn->SetSize(w - bs.x-RIGHTBUTTONBORDER, TOPBUTTONBORDER, bs.x, h > bs.y ? bs.y : h);
 
     if (m_dropped)
         DropDown(true);
@@ -659,6 +754,23 @@ void wxDatePickerCtrlGeneric::DropDown(bool down)
 }
 
 
+void wxDatePickerCtrlGeneric::OnSize(wxSizeEvent& event)
+{
+    if ( m_btn )
+    {
+        wxSize sz = GetClientSize();
+
+        wxSize bs=m_btn->GetSize();
+        int eh=m_txt->GetBestSize().y;
+
+        m_txt->SetSize(0, TXTPOSY, sz.x-bs.x, sz.y > eh ? eh-TXTPOSY : sz.y-TXTPOSY);
+        m_btn->SetSize(sz.x - bs.x, 0, bs.x, sz.y);
+    }
+
+    event.Skip();
+}
+
+
 void wxDatePickerCtrlGeneric::OnChildSetFocus(wxChildFocusEvent &ev)
 {
     ev.Skip();
@@ -675,7 +787,7 @@ void wxDatePickerCtrlGeneric::OnChildSetFocus(wxChildFocusEvent &ev)
     if (m_dropped)
     {
         DropDown(false);
-        if (ev.GetEventObject() == m_btn)
+        if (::wxFindWindowAtPoint(::wxGetMousePosition()) == m_btn)
             m_ignoreDrop = true;
     }
 }

src/generic/renderg.cpp

@@ -357,10 +357,15 @@ wxRendererGeneric::DrawComboBoxDropButton(wxWindow *win,
                                           const wxRect& rect,
                                           int WXUNUSED(flags))
 {
-    // FIXME: Is it worth to do a better implementation?
+    // Creating a generic button background that would actually be
-    // Generic wxComboDropButton should be drawn using
+    // useful is rather difficult to accomplish. Best compromise
-    // combination of wxBitmapButton and DrawDropArrow
+    // is to use window's background colour to achieve transparent'
-    // anyway.
+    // ish appearance that should look decent in combo box style
+    // controls.
+    wxColour col = win->GetBackgroundColour();
+    dc.SetBrush(wxBrush(col));
+    dc.SetPen(wxPen(col));
+    dc.DrawRectangle(rect);
     DrawDropArrow(win,dc,rect);
 }