add support for alpha in color dialog on OSX, see #14127

[wxWidgets.git] / src / msw / ownerdrw.cpp

diff --git a/src/msw/ownerdrw.cpp b/src/msw/ownerdrw.cpp
index cf3cc95bdace1f5360f7f5f76bc71018eb7271e4..0b0a8e513e88ce4a6e9f0455396b93717cebd91b 100644 (file)
--- a/src/msw/ownerdrw.cpp
+++ b/src/msw/ownerdrw.cpp
@@ -2,7 +2,7 @@
 // Name:        src/msw/ownerdrw.cpp
 // Purpose:     implementation of wxOwnerDrawn class
 // Author:      Vadim Zeitlin
 // Name:        src/msw/ownerdrw.cpp
 // Purpose:     implementation of wxOwnerDrawn class
 // Author:      Vadim Zeitlin

-// Modified by:
+// Modified by: Marcin Malich

 // Created:     13.11.97
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
 // Created:     13.11.97
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>


@@ -18,537 +18,133 @@
 
 #if wxUSE_OWNER_DRAWN
 
 
 #if wxUSE_OWNER_DRAWN
 

-#ifndef WX_PRECOMP
-    #include "wx/window.h"
-    #include "wx/font.h"
-    #include "wx/bitmap.h"
-    #include "wx/image.h"
-    #include "wx/dcmemory.h"
-    #include "wx/menu.h"
-    #include "wx/utils.h"
-    #include "wx/settings.h"
-    #include "wx/menuitem.h"
-    #include "wx/module.h"
-#endif
-

 #include "wx/ownerdrw.h"
 #include "wx/ownerdrw.h"

-#include "wx/fontutil.h"
-
+#include "wx/msw/dc.h"

 #include "wx/msw/private.h"
 #include "wx/msw/private.h"

-
-#ifndef SPI_GETKEYBOARDCUES
-#define SPI_GETKEYBOARDCUES 0x100A
-#endif
+#include "wx/msw/private/dc.h"
+#include "wx/msw/wrapcctl.h"            // for HIMAGELIST

 
 #ifndef DSS_HIDEPREFIX
 #define DSS_HIDEPREFIX  0x0200
 #endif
 
 
 #ifndef DSS_HIDEPREFIX
 #define DSS_HIDEPREFIX  0x0200
 #endif
 

-class wxMSWSystemMenuFontModule : public wxModule
-{
-public:
-    virtual bool OnInit()
-    {
-        return true;
-    }
+// ----------------------------------------------------------------------------
+// constants for base class
+// ----------------------------------------------------------------------------

 
 

-    virtual void OnExit()
-    {
-        if ( ms_systemMenuFont )
-        {
-            delete ms_systemMenuFont;
-            ms_systemMenuFont = NULL;
-        }
-    }
-
-    static const wxFont& GetSystemMenuFont()
-    {
-        if ( !ms_systemMenuFont )
-            DoInitFont();
-
-        return *ms_systemMenuFont;
-    }
-
-    static int GetSystemMenuHeight()
-    {
-        if ( !ms_systemMenuHeight )
-            DoInitMetrics();
-
-        return ms_systemMenuHeight;
-    }
-
-    static bool AlwaysShowCues()
-    {
-        if ( !ms_systemMenuHeight )
-            DoInitMetrics();
-
-        return ms_alwaysShowCues;
-    }
-
-private:
-    static NONCLIENTMETRICS GetNCM()
-    {
-        WinStruct<NONCLIENTMETRICS> nm;
-        if ( !::SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &nm, 0) )
-        {
-#if WINVER >= 0x0600
-            // a new field has been added to NONCLIENTMETRICS under Vista, so
-            // the call to SystemParametersInfo() fails if we use the struct
-            // size incorporating this new value on an older system -- retry
-            // without it
-            nm.cbSize -= sizeof(int);
-            if ( !::SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &nm, 0) )
-#endif // WINVER >= 0x0600
-            {
-                // maybe we should initialize the struct with some defaults?
-                wxLogLastError(_T("SystemParametersInfo(SPI_GETNONCLIENTMETRICS)"));
-            }
-        }
-
-        return nm;
-    }
-
-    static void DoInitMetrics()
-    {
-        // iMenuHeight is the menu bar height and the menu items are less tall,
-        // although I don't know by how much -- below is the value for my system
-        ms_systemMenuHeight = GetNCM().iMenuHeight - 4;
-
-        wxASSERT_MSG( ms_systemMenuHeight > 0,
-                        "menu height should be positive" );
-
-        if ( ::SystemParametersInfo(SPI_GETKEYBOARDCUES, 0,
-                                    &ms_alwaysShowCues, 0) == 0 )
-        {
-            // if it's not supported, we must be on an old Windows version
-            // which always shows them
-            ms_alwaysShowCues = true;
-        }
-    }
-
-    static void DoInitFont()
-    {
-        ms_systemMenuFont = new wxFont(wxNativeFontInfo(GetNCM().lfMenuFont));
-    }
-
-    static wxFont* ms_systemMenuFont;
-    static int ms_systemMenuHeight;
-    static bool ms_alwaysShowCues;
-
-
-    DECLARE_DYNAMIC_CLASS(wxMSWSystemMenuFontModule)
-};
-
-// these static variables are from the wxMSWSystemMenuFontModule object
-// and reflect the system settings returned by the Win32 API's
-// SystemParametersInfo() call.
-
-wxFont* wxMSWSystemMenuFontModule::ms_systemMenuFont = NULL;
-int wxMSWSystemMenuFontModule::ms_systemMenuHeight = 0;
-bool wxMSWSystemMenuFontModule::ms_alwaysShowCues = false;
-
-IMPLEMENT_DYNAMIC_CLASS(wxMSWSystemMenuFontModule, wxModule)
-
-
-// VC++ 6 gives a warning here:
-//
-//      return type for 'OwnerDrawnSet_wxImplementation_HashTable::iterator::
-//      operator ->' is 'class wxOwnerDrawn ** ' (ie; not a UDT or reference to
-//      a UDT.  Will produce errors if applied using infix notation.
-//
-// shut it down
-#if defined __VISUALC__ && __VISUALC__ <= 1300
-    #if __VISUALC__ >= 1200
-        #pragma warning(push)
-        #define POP_WARNINGS
-    #endif
-    #pragma warning(disable: 4284)
-#endif
-
-#include "wx/hashset.h"
-WX_DECLARE_HASH_SET(wxOwnerDrawn*, wxPointerHash, wxPointerEqual, OwnerDrawnSet);
-
-#ifdef POP_WARNINGS
-    #pragma warning(pop)
-#endif
+int wxOwnerDrawnBase::ms_defaultMargin = 3;

 
 // ============================================================================
 // implementation of wxOwnerDrawn class
 // ============================================================================
 
 
 // ============================================================================
 // implementation of wxOwnerDrawn class
 // ============================================================================
 

-// ctor
-// ----
-wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
-                           bool bCheckable,
-                           bool bMenuItem)
-            : m_strName(str)
-{
-    if ( ms_nDefaultMarginWidth == 0 )
-    {
-       ms_nDefaultMarginWidth = ::GetSystemMetrics(SM_CXMENUCHECK) +
-                                wxSystemSettings::GetMetric(wxSYS_EDGE_X);
-       ms_nLastMarginWidth = ms_nDefaultMarginWidth;
-    }
-
-    m_bCheckable   = bCheckable;
-    m_bOwnerDrawn  = false;
-    m_isMenuItem   = bMenuItem;
-    m_nHeight      = 0;
-    m_nMarginWidth = ms_nLastMarginWidth;
-}
-
-wxOwnerDrawn::~wxOwnerDrawn()
-{
-}
-
-bool wxOwnerDrawn::IsMenuItem() const
-{
-    return m_isMenuItem;
-}
-
-
-// these items will be set during the first invocation of the ctor,
-// because the values will be determined by checking the system settings,
-// which is a chunk of code
-size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
-size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;
-
-
-// drawing
-// -------
-
-wxFont wxOwnerDrawn::GetFontToUse() const
-{
-    wxFont font = m_font;
-    if ( !font.Ok() )
-    {
-        if ( IsMenuItem() )
-            font = wxMSWSystemMenuFontModule::GetSystemMenuFont();
-
-        if ( !font.Ok() )
-            font = *wxNORMAL_FONT;
-    }
-
-    return font;
-}
-
-// get size of the item
-// The item size includes the menu string, the accel string,
-// the bitmap and size for a submenu expansion arrow...
-bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight)
-{
-    if ( IsOwnerDrawn() )
-    {
-        wxMemoryDC dc;
-
-        wxString str = wxStripMenuCodes(m_strName);
-
-        // if we have a valid accel string, then pad out
-        // the menu string so that the menu and accel string are not
-        // placed on top of each other.
-        if ( !m_strAccel.empty() )
-        {
-            str.Pad(str.length()%8);
-            str += m_strAccel;
-        }
-
-        dc.SetFont(GetFontToUse());
-
-        wxCoord w, h;
-        dc.GetTextExtent(str, &w, &h);
-        *pwidth = w;
-        *pheight = h;
-
-        // add space at the end of the menu for the submenu expansion arrow
-        // this will also allow offsetting the accel string from the right edge
-        *pwidth += GetMarginWidth() + 16;
-    }
-    else // don't draw the text, just the bitmap (if any)
-    {
-        *pwidth =
-        *pheight = 0;
-    }
-
-    // increase size to accommodate bigger bitmaps if necessary
-    if (m_bmpChecked.Ok())
-    {
-        // Is BMP height larger than text height?
-        size_t adjustedHeight = m_bmpChecked.GetHeight();
-        if ( *pheight < adjustedHeight )
-            *pheight = adjustedHeight;
-
-        const size_t widthBmp = m_bmpChecked.GetWidth();
-        if ( IsOwnerDrawn() )
-        {
-            // widen the margin to fit the bitmap if necessary
-            if ((size_t)GetMarginWidth() < widthBmp)
-                SetMarginWidth(widthBmp);
-        }
-        else // we must allocate enough space for the bitmap
-        {
-            *pwidth += widthBmp;
-        }
-    }
-
-    // add a 4-pixel separator, otherwise menus look cluttered
-    *pwidth += 4;
-
-    // make sure that this item is at least as tall as the system menu height
-    const size_t heightStd = wxMSWSystemMenuFontModule::GetSystemMenuHeight();
-    if ( *pheight < heightStd )
-      *pheight = heightStd;
-
-    // remember height for use in OnDrawItem
-    m_nHeight = *pheight;
-
-    return true;
-}
-

 // draw the item
 // draw the item

-bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
-                              const wxRect& rc,
-                              wxODAction act,
-                              wxODStatus st)
+bool wxOwnerDrawn::OnDrawItem(wxDC& dc, const wxRect& rc,
+                              wxODAction, wxODStatus stat)

 {
 {

-    // we do nothing on focus change
-    if ( act == wxODFocusChanged )
+    // we do nothing if item isn't ownerdrawn
+    if ( !IsOwnerDrawn() )

         return true;
 
         return true;
 

-
-    // this flag determines whether or not an edge will
-    // be drawn around the bitmap. In most "windows classic"
-    // applications, a 1-pixel highlight edge is drawn around
-    // the bitmap of an item when it is selected.  However,
-    // with the new "luna" theme, no edge is drawn around
-    // the bitmap because the background is white (this applies
-    // only to "non-XP style" menus w/ bitmaps --
-    // see IE 6 menus for an example)
-
-    bool draw_bitmap_edge = true;
-
-    // set the colors
-    // --------------
-    DWORD colBack, colText;
-    if ( st & wxODSelected )
-    {
-        colBack = GetSysColor(COLOR_HIGHLIGHT);
-        if (!(st & wxODDisabled))
-        {
-            colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
-        }
-        else
-        {
-            colText = GetSysColor(COLOR_GRAYTEXT);
-        }
-    }
-    else
-    {
-        // fall back to default colors if none explicitly specified
-        colBack = m_colBack.Ok() ? wxColourToPalRGB(m_colBack)
-                                 : GetSysColor(COLOR_MENU);
-        colText = m_colText.Ok() ? wxColourToPalRGB(m_colText)
-                                 : GetSysColor(COLOR_MENUTEXT);
-    }
-
-    if ( IsOwnerDrawn() )
-    {
-        // don't draw an edge around the bitmap, if background is white ...
-        DWORD menu_bg_color = GetSysColor(COLOR_MENU);
-        if (    ( GetRValue( menu_bg_color ) >= 0xf0 &&
-                  GetGValue( menu_bg_color ) >= 0xf0 &&
-                  GetBValue( menu_bg_color ) >= 0xf0 )
-          )
-        {
-            draw_bitmap_edge = false;
-        }
-    }
-    else // edge doesn't look well with default Windows drawing
-    {
-        draw_bitmap_edge = false;
-    }
-
-

     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
     HDC hdc = GetHdcOf(*impl);
     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
     HDC hdc = GetHdcOf(*impl);

-    COLORREF colOldText = ::SetTextColor(hdc, colText),
-             colOldBack = ::SetBkColor(hdc, colBack);
-
-    // *2, as in wxSYS_EDGE_Y
-    int margin = GetMarginWidth() + 2 * wxSystemSettings::GetMetric(wxSYS_EDGE_X);
-
-    // select the font and draw the text
-    // ---------------------------------

 
 

+    RECT rect;
+    wxCopyRectToRECT(rc, rect);

 
 

-    // determine where to draw and leave space for a check-mark.
-    // + 1 pixel to separate the edge from the highlight rectangle
-    int xText = rc.x + margin + 1;
+    {
+        // set the font and colors
+        wxFont font;
+        GetFontToUse(font);

 
 

+        wxColour colText, colBack;
+        GetColourToUse(stat, colText, colBack);

 
 

-    // using native API because it recognizes '&'
-    if ( IsOwnerDrawn() )
-    {
-        int nPrevMode = SetBkMode(hdc, TRANSPARENT);
-        AutoHBRUSH hbr(colBack);
-        SelectInHDC selBrush(hdc, hbr);
+        SelectInHDC selFont(hdc, GetHfontOf(font));

 
 

-        RECT rectFill = { rc.GetLeft(), rc.GetTop(),
-                            rc.GetRight() + 1, rc.GetBottom() + 1 };
+        wxMSWImpl::wxTextColoursChanger textCol(hdc, colText, colBack);
+        wxMSWImpl::wxBkModeChanger bkMode(hdc, wxBRUSHSTYLE_TRANSPARENT);

 
 

-        if ( (st & wxODSelected) && m_bmpChecked.Ok() && draw_bitmap_edge )
-        {
-            // only draw the highlight under the text, not under
-            // the bitmap or checkmark
-            rectFill.left = xText;
-        }

 
 

-        FillRect(hdc, &rectFill, hbr);
+        AutoHBRUSH hbr(wxColourToPalRGB(colBack));
+        SelectInHDC selBrush(hdc, hbr);

 
 

-        // use default font if no font set
-        wxFont fontToUse = GetFontToUse();
-        SelectInHDC selFont(hdc, GetHfontOf(fontToUse));
+        ::FillRect(hdc, &rect, hbr);

 
 

-        wxString strMenuText = m_strName.BeforeFirst('\t');
+        // using native API because it recognizes '&'

 
 

-        xText += 3; // separate text from the highlight rectangle
+        wxString text = GetName();

 
         SIZE sizeRect;
 
         SIZE sizeRect;

-        ::GetTextExtentPoint32(hdc, strMenuText.c_str(), strMenuText.length(), &sizeRect);
+        ::GetTextExtentPoint32(hdc, text.c_str(), text.length(), &sizeRect);

 
         int flags = DST_PREFIXTEXT;
 
         int flags = DST_PREFIXTEXT;

-        if ( (st & wxODDisabled) && !(st & wxODSelected) )
+        if ( (stat & wxODDisabled) && !(stat & wxODSelected) )

             flags |= DSS_DISABLED;
 
             flags |= DSS_DISABLED;
 

-        if ( (st & wxODHidePrefix) &&
-                !wxMSWSystemMenuFontModule::AlwaysShowCues() )
+        if ( (stat & wxODHidePrefix) )

             flags |= DSS_HIDEPREFIX;
 
             flags |= DSS_HIDEPREFIX;
 

-        ::DrawState
-        (
-            hdc,
-            NULL,
-            NULL,
-            (LPARAM)strMenuText.wx_str(),
-            strMenuText.length(),
-            xText,
-            rc.y + (rc.GetHeight() - sizeRect.cy + 1)/2, // centre vertically
-            rc.GetWidth() - margin,
-            sizeRect.cy,
-            flags
-        );
-
-        // ::SetTextAlign(hdc, TA_RIGHT) doesn't work with DSS_DISABLED or DSS_MONO
-        // as the last parameter in DrawState() (at least with Windows98). So we have
-        // to take care of right alignment ourselves.
-        if ( !m_strAccel.empty() )
-        {
-            int accel_width, accel_height;
-            dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
-            // right align accel string with right edge of menu ( offset by the
-            // margin width )
-            ::DrawState(hdc, NULL, NULL,
-                    (LPARAM)m_strAccel.wx_str(),
-                    m_strAccel.length(),
-                    rc.GetWidth()-16-accel_width, rc.y+(int) ((rc.GetHeight()-sizeRect.cy)/2.0),
-                    0, 0,
-                    DST_TEXT |
-                    (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
-        }
-
-        (void)SetBkMode(hdc, nPrevMode);
-    }
+        int x = rc.x + GetMarginWidth();
+        int y = rc.y + (rc.GetHeight() - sizeRect.cy) / 2;
+        int cx = rc.GetWidth() - GetMarginWidth();
+        int cy = sizeRect.cy;

 
 

+        ::DrawState(hdc, NULL, NULL, wxMSW_CONV_LPARAM(text),
+                    text.length(), x, y, cx, cy, flags);

 
 

-    // draw the bitmap
-    // ---------------
-    if ( IsCheckable() && !m_bmpChecked.Ok() )
-    {
-        if ( st & wxODChecked )
-        {
-            // what goes on: DrawFrameControl creates a b/w mask,
-            // then we copy it to screen to have right colors
-
-            // first create a monochrome bitmap in a memory DC
-            HDC hdcMem = CreateCompatibleDC(hdc);
-            HBITMAP hbmpCheck = CreateBitmap(margin, m_nHeight, 1, 1, 0);
-            SelectObject(hdcMem, hbmpCheck);
-
-            // then draw a check mark into it
-            RECT rect = { 0, 0, margin, m_nHeight };
-            if ( m_nHeight > 0 )
-            {
-                ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
-            }
+    } // reset to default the font, colors and brush

 
 

-            // finally copy it to screen DC and clean up
-            BitBlt(hdc, rc.x, rc.y, margin, m_nHeight, hdcMem, 0, 0, SRCCOPY);
+    if (stat & wxODHasFocus)
+        ::DrawFocusRect(hdc, &rect);

 
 

-            DeleteDC(hdcMem);
-            DeleteObject(hbmpCheck);
-        }
-    }
-    else
-    {
-        wxBitmap bmp;
+    return true;
+}

 
 

-        if ( st & wxODDisabled )
-        {
-            bmp = GetDisabledBitmap();
-        }
+// ----------------------------------------------------------------------------
+// global helper functions implemented here
+// ----------------------------------------------------------------------------

 
 

-        if ( !bmp.Ok() )
-        {
-            // for not checkable bitmaps we should always use unchecked one
-            // because their checked bitmap is not set
-            bmp = GetBitmap(!IsCheckable() || (st & wxODChecked));
+BOOL wxDrawStateBitmap(HDC hDC, HBITMAP hBitmap, int x, int y, UINT uState)
+{
+    // determine size of bitmap image
+    BITMAP bmp;
+    if ( !::GetObject(hBitmap, sizeof(BITMAP), &bmp) )
+        return FALSE;
+
+    BOOL result;

 
 

-#if wxUSE_IMAGE
-            if ( bmp.Ok() && st & wxODDisabled )
+    switch ( uState )
+    {
+        case wxDSB_NORMAL:
+        case wxDSB_SELECTED:

             {
             {

-                // we need to grey out the bitmap as we don't have any specific
-                // disabled bitmap
-                wxImage imgGrey = bmp.ConvertToImage().ConvertToGreyscale();
-                if ( imgGrey.Ok() )
-                    bmp = wxBitmap(imgGrey);
+                // uses image list functions to draw
+                //  - normal bitmap with support transparency
+                //    (image list internally create mask etc.)
+                //  - blend bitmap with the background colour
+                //    (like default selected items)
+                HIMAGELIST hIml = ::ImageList_Create(bmp.bmWidth, bmp.bmHeight,
+                                                     ILC_COLOR32 | ILC_MASK, 1, 1);
+                ::ImageList_Add(hIml, hBitmap, NULL);
+                UINT fStyle = uState == wxDSB_SELECTED ? ILD_SELECTED : ILD_NORMAL;
+                result = ::ImageList_Draw(hIml, 0, hDC, x, y, fStyle);
+                ::ImageList_Destroy(hIml);

             }
             }

-#endif // wxUSE_IMAGE
-        }
-
-        if ( bmp.Ok() )
-        {
-            wxMemoryDC dcMem(&dc);
-            dcMem.SelectObjectAsSource(bmp);
+            break;

 
 

-            // center bitmap
-            int nBmpWidth = bmp.GetWidth(),
-                nBmpHeight = bmp.GetHeight();
+        case wxDSB_DISABLED:
+            result = ::DrawState(hDC, NULL, NULL, (LPARAM)hBitmap, 0, x, y,
+                                 bmp.bmWidth, bmp.bmHeight,
+                                 DST_BITMAP | DSS_DISABLED);
+            break;

 
 

-            // there should be enough space!
-            wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
-
-            int heightDiff = m_nHeight - nBmpHeight;
-            dc.Blit(rc.x + (margin - nBmpWidth) / 2,
-                    rc.y + heightDiff / 2,
-                    nBmpWidth, nBmpHeight,
-                    &dcMem, 0, 0, wxCOPY, true /* use mask */);
-
-            if ( ( st & wxODSelected ) && !( st & wxODDisabled ) && draw_bitmap_edge )
-            {
-                RECT rectBmp = { rc.GetLeft(), rc.GetTop(),
-                                 rc.GetLeft() + margin,
-                                 rc.GetTop() + m_nHeight };
-                SetBkColor(hdc, colBack);
-
-                DrawEdge(hdc, &rectBmp, BDR_RAISEDINNER, BF_RECT);
-            }
-        }
+        default:
+            wxFAIL_MSG( wxT("DrawStateBitmap: unknown wxDSBStates value") );
+            result = FALSE;

     }
 
     }
 

-    ::SetTextColor(hdc, colOldText);
-    ::SetBkColor(hdc, colOldBack);
-
-    return true;
+    return result;

 }
 
 }
 

-

 #endif // wxUSE_OWNER_DRAWN
 #endif // wxUSE_OWNER_DRAWN