+/////////////////////////////////////////////////////////////////////////////
+// Name: src/msw/anybutton.cpp
+// Purpose: wxAnyButton
+// Author: Julian Smart
+// Created: 1998-01-04 (extracted from button.cpp)
+// RCS-ID: $Id: anybutton.cpp 67384 2011-04-03 20:31:32Z DS $
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#ifdef wxHAS_ANY_BUTTON
+
+#include "wx/anybutton.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/brush.h"
+ #include "wx/panel.h"
+ #include "wx/bmpbuttn.h"
+ #include "wx/settings.h"
+ #include "wx/dcscreen.h"
+ #include "wx/dcclient.h"
+ #include "wx/toplevel.h"
+ #include "wx/msw/wrapcctl.h"
+ #include "wx/msw/private.h"
+ #include "wx/msw/missing.h"
+#endif
+
+#include "wx/imaglist.h"
+#include "wx/stockitem.h"
+#include "wx/msw/private/button.h"
+#include "wx/msw/private/dc.h"
+#include "wx/private/window.h"
+
+#if wxUSE_MARKUP
+ #include "wx/generic/private/markuptext.h"
+#endif // wxUSE_MARKUP
+
+using namespace wxMSWImpl;
+
+#if wxUSE_UXTHEME
+ #include "wx/msw/uxtheme.h"
+
+ // no need to include tmschema.h
+ #ifndef BP_PUSHBUTTON
+ #define BP_PUSHBUTTON 1
+
+ #define PBS_NORMAL 1
+ #define PBS_HOT 2
+ #define PBS_PRESSED 3
+ #define PBS_DISABLED 4
+ #define PBS_DEFAULTED 5
+
+ #define TMT_CONTENTMARGINS 3602
+ #endif
+
+ // provide the necessary declarations ourselves if they're missing from
+ // headers
+ #ifndef BCM_SETIMAGELIST
+ #define BCM_SETIMAGELIST 0x1602
+ #define BCM_SETTEXTMARGIN 0x1604
+
+ enum
+ {
+ BUTTON_IMAGELIST_ALIGN_LEFT,
+ BUTTON_IMAGELIST_ALIGN_RIGHT,
+ BUTTON_IMAGELIST_ALIGN_TOP,
+ BUTTON_IMAGELIST_ALIGN_BOTTOM
+ };
+
+ struct BUTTON_IMAGELIST
+ {
+ HIMAGELIST himl;
+ RECT margin;
+ UINT uAlign;
+ };
+ #endif
+#endif // wxUSE_UXTHEME
+
+#ifndef WM_THEMECHANGED
+ #define WM_THEMECHANGED 0x031A
+#endif
+
+#ifndef ODS_NOACCEL
+ #define ODS_NOACCEL 0x0100
+#endif
+
+#ifndef ODS_NOFOCUSRECT
+ #define ODS_NOFOCUSRECT 0x0200
+#endif
+
+#ifndef DT_HIDEPREFIX
+ #define DT_HIDEPREFIX 0x00100000
+#endif
+
+#if wxUSE_UXTHEME
+extern wxWindowMSW *wxWindowBeingErased; // From src/msw/window.cpp
+#endif // wxUSE_UXTHEME
+
+// ----------------------------------------------------------------------------
+// button image data
+// ----------------------------------------------------------------------------
+
+// we use different data classes for owner drawn buttons and for themed XP ones
+
+class wxButtonImageData
+{
+public:
+ wxButtonImageData() { }
+ virtual ~wxButtonImageData() { }
+
+ virtual wxBitmap GetBitmap(wxAnyButton::State which) const = 0;
+ virtual void SetBitmap(const wxBitmap& bitmap, wxAnyButton::State which) = 0;
+
+ virtual wxSize GetBitmapMargins() const = 0;
+ virtual void SetBitmapMargins(wxCoord x, wxCoord y) = 0;
+
+ virtual wxDirection GetBitmapPosition() const = 0;
+ virtual void SetBitmapPosition(wxDirection dir) = 0;
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxButtonImageData);
+};
+
+namespace
+{
+
+// the gap between button edge and the interior area used by Windows for the
+// standard buttons
+const int OD_BUTTON_MARGIN = 4;
+
+class wxODButtonImageData : public wxButtonImageData
+{
+public:
+ wxODButtonImageData(wxAnyButton *btn, const wxBitmap& bitmap)
+ {
+ SetBitmap(bitmap, wxAnyButton::State_Normal);
+ SetBitmap(bitmap.ConvertToDisabled(), wxAnyButton::State_Disabled);
+
+ m_dir = wxLEFT;
+
+ // we use margins when we have both bitmap and text, but when we have
+ // only the bitmap it should take up the entire button area
+ if ( btn->ShowsLabel() )
+ {
+ m_margin.x = btn->GetCharWidth();
+ m_margin.y = btn->GetCharHeight() / 2;
+ }
+ }
+
+ virtual wxBitmap GetBitmap(wxAnyButton::State which) const
+ {
+ return m_bitmaps[which];
+ }
+
+ virtual void SetBitmap(const wxBitmap& bitmap, wxAnyButton::State which)
+ {
+ m_bitmaps[which] = bitmap;
+ }
+
+ virtual wxSize GetBitmapMargins() const
+ {
+ return m_margin;
+ }
+
+ virtual void SetBitmapMargins(wxCoord x, wxCoord y)
+ {
+ m_margin = wxSize(x, y);
+ }
+
+ virtual wxDirection GetBitmapPosition() const
+ {
+ return m_dir;
+ }
+
+ virtual void SetBitmapPosition(wxDirection dir)
+ {
+ m_dir = dir;
+ }
+
+private:
+ // just store the values passed to us to be able to retrieve them later
+ // from the drawing code
+ wxBitmap m_bitmaps[wxAnyButton::State_Max];
+ wxSize m_margin;
+ wxDirection m_dir;
+
+ wxDECLARE_NO_COPY_CLASS(wxODButtonImageData);
+};
+
+#if wxUSE_UXTHEME
+
+// somehow the margin is one pixel greater than the value returned by
+// GetThemeMargins() call
+const int XP_BUTTON_EXTRA_MARGIN = 1;
+
+class wxXPButtonImageData : public wxButtonImageData
+{
+public:
+ // we must be constructed with the size of our images as we need to create
+ // the image list
+ wxXPButtonImageData(wxAnyButton *btn, const wxBitmap& bitmap)
+ : m_iml(bitmap.GetWidth(), bitmap.GetHeight(), true /* use mask */,
+ wxAnyButton::State_Max),
+ m_hwndBtn(GetHwndOf(btn))
+ {
+ // initialize all bitmaps except for the disabled one to normal state
+ for ( int n = 0; n < wxAnyButton::State_Max; n++ )
+ {
+ m_iml.Add(n == wxAnyButton::State_Disabled ? bitmap.ConvertToDisabled()
+ : bitmap);
+ }
+
+ m_data.himl = GetHimagelistOf(&m_iml);
+
+ // no margins by default
+ m_data.margin.left =
+ m_data.margin.right =
+ m_data.margin.top =
+ m_data.margin.bottom = 0;
+
+ // use default alignment
+ m_data.uAlign = BUTTON_IMAGELIST_ALIGN_LEFT;
+
+ UpdateImageInfo();
+ }
+
+ virtual wxBitmap GetBitmap(wxAnyButton::State which) const
+ {
+ return m_iml.GetBitmap(which);
+ }
+
+ virtual void SetBitmap(const wxBitmap& bitmap, wxAnyButton::State which)
+ {
+ m_iml.Replace(which, bitmap);
+
+ UpdateImageInfo();
+ }
+
+ virtual wxSize GetBitmapMargins() const
+ {
+ return wxSize(m_data.margin.left, m_data.margin.top);
+ }
+
+ virtual void SetBitmapMargins(wxCoord x, wxCoord y)
+ {
+ RECT& margin = m_data.margin;
+ margin.left =
+ margin.right = x;
+ margin.top =
+ margin.bottom = y;
+
+ if ( !::SendMessage(m_hwndBtn, BCM_SETTEXTMARGIN, 0, (LPARAM)&margin) )
+ {
+ wxLogDebug("SendMessage(BCM_SETTEXTMARGIN) failed");
+ }
+ }
+
+ virtual wxDirection GetBitmapPosition() const
+ {
+ switch ( m_data.uAlign )
+ {
+ default:
+ wxFAIL_MSG( "invalid image alignment" );
+ // fall through
+
+ case BUTTON_IMAGELIST_ALIGN_LEFT:
+ return wxLEFT;
+
+ case BUTTON_IMAGELIST_ALIGN_RIGHT:
+ return wxRIGHT;
+
+ case BUTTON_IMAGELIST_ALIGN_TOP:
+ return wxTOP;
+
+ case BUTTON_IMAGELIST_ALIGN_BOTTOM:
+ return wxBOTTOM;
+ }
+ }
+
+ virtual void SetBitmapPosition(wxDirection dir)
+ {
+ UINT alignNew;
+ switch ( dir )
+ {
+ default:
+ wxFAIL_MSG( "invalid direction" );
+ // fall through
+
+ case wxLEFT:
+ alignNew = BUTTON_IMAGELIST_ALIGN_LEFT;
+ break;
+
+ case wxRIGHT:
+ alignNew = BUTTON_IMAGELIST_ALIGN_RIGHT;
+ break;
+
+ case wxTOP:
+ alignNew = BUTTON_IMAGELIST_ALIGN_TOP;
+ break;
+
+ case wxBOTTOM:
+ alignNew = BUTTON_IMAGELIST_ALIGN_BOTTOM;
+ break;
+ }
+
+ if ( alignNew != m_data.uAlign )
+ {
+ m_data.uAlign = alignNew;
+ UpdateImageInfo();
+ }
+ }
+
+private:
+ void UpdateImageInfo()
+ {
+ if ( !::SendMessage(m_hwndBtn, BCM_SETIMAGELIST, 0, (LPARAM)&m_data) )
+ {
+ wxLogDebug("SendMessage(BCM_SETIMAGELIST) failed");
+ }
+ }
+
+ // we store image list separately to be able to use convenient wxImageList
+ // methods instead of working with raw HIMAGELIST
+ wxImageList m_iml;
+
+ // store the rest of the data in BCM_SETIMAGELIST-friendly form
+ BUTTON_IMAGELIST m_data;
+
+ // the button we're associated with
+ const HWND m_hwndBtn;
+
+
+ wxDECLARE_NO_COPY_CLASS(wxXPButtonImageData);
+};
+
+#endif // wxUSE_UXTHEME
+
+} // anonymous namespace
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// helper functions from wx/msw/private/button.h
+// ----------------------------------------------------------------------------
+
+void wxMSWButton::UpdateMultilineStyle(HWND hwnd, const wxString& label)
+{
+ // update BS_MULTILINE style depending on the new label (resetting it
+ // doesn't seem to do anything very useful but it shouldn't hurt and we do
+ // have to set it whenever the label becomes multi line as otherwise it
+ // wouldn't be shown correctly as we don't use BS_MULTILINE when creating
+ // the control unless it already has new lines in its label)
+ long styleOld = ::GetWindowLong(hwnd, GWL_STYLE),
+ styleNew;
+ if ( label.find(wxT('\n')) != wxString::npos )
+ styleNew = styleOld | BS_MULTILINE;
+ else
+ styleNew = styleOld & ~BS_MULTILINE;
+
+ if ( styleNew != styleOld )
+ ::SetWindowLong(hwnd, GWL_STYLE, styleNew);
+}
+
+wxSize wxMSWButton::GetFittingSize(wxWindow *win,
+ const wxSize& sizeLabel,
+ int flags)
+{
+ // FIXME: this is pure guesswork, need to retrieve the real button margins
+ wxSize sizeBtn = sizeLabel;
+
+ sizeBtn.x += 3*win->GetCharWidth();
+ sizeBtn.y += win->GetCharHeight()/2;
+
+ // account for the shield UAC icon if we have it
+ if ( flags & Size_AuthNeeded )
+ sizeBtn.x += wxSystemSettings::GetMetric(wxSYS_SMALLICON_X);
+
+ return sizeBtn;
+}
+
+wxSize wxMSWButton::ComputeBestFittingSize(wxControl *btn, int flags)
+{
+ wxClientDC dc(btn);
+
+ wxSize sizeBtn;
+ dc.GetMultiLineTextExtent(btn->GetLabelText(), &sizeBtn.x, &sizeBtn.y);
+
+ return GetFittingSize(btn, sizeBtn, flags);
+}
+
+wxSize wxMSWButton::IncreaseToStdSizeAndCache(wxControl *btn, const wxSize& size)
+{
+ wxSize sizeBtn(size);
+
+ // All buttons have at least the standard height and, unless the user
+ // explicitly wants them to be as small as possible and used wxBU_EXACTFIT
+ // style to indicate this, of at least the standard width too.
+ //
+ // Notice that we really want to make all buttons equally high, otherwise
+ // they look ugly and the existing code using wxBU_EXACTFIT only uses it to
+ // control width and not height.
+
+ // The 50x14 button size is documented in the "Recommended sizing and
+ // spacing" section of MSDN layout article.
+ //
+ // Note that we intentionally don't use GetDefaultSize() here, because
+ // it's inexact -- dialog units depend on this dialog's font.
+ const wxSize sizeDef = btn->ConvertDialogToPixels(wxSize(50, 14));
+ if ( !btn->HasFlag(wxBU_EXACTFIT) )
+ {
+ if ( sizeBtn.x < sizeDef.x )
+ sizeBtn.x = sizeDef.x;
+ }
+ if ( sizeBtn.y < sizeDef.y )
+ sizeBtn.y = sizeDef.y;
+
+ btn->CacheBestSize(sizeBtn);
+
+ return sizeBtn;
+}
+
+// ----------------------------------------------------------------------------
+// creation/destruction
+// ----------------------------------------------------------------------------
+
+wxAnyButton::~wxAnyButton()
+{
+ delete m_imageData;
+#if wxUSE_MARKUP
+ delete m_markupText;
+#endif // wxUSE_MARKUP
+}
+
+void wxAnyButton::SetLabel(const wxString& label)
+{
+ wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
+
+ wxAnyButtonBase::SetLabel(label);
+
+#if wxUSE_MARKUP
+ // If we have a plain text label, we shouldn't be using markup any longer.
+ if ( m_markupText )
+ {
+ delete m_markupText;
+ m_markupText = NULL;
+
+ // Unfortunately we don't really know whether we can reset the button
+ // to be non-owner-drawn or not: if we had made it owner-drawn just
+ // because of a call to SetLabelMarkup(), we could, but not if there
+ // were [also] calls to Set{Fore,Back}groundColour(). If it's really a
+ // problem to have button remain owner-drawn forever just because it
+ // had markup label once, we should record the reason for our current
+ // owner-drawnness and check it here.
+ }
+#endif // wxUSE_MARKUP
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+void wxAnyButton::AdjustForBitmapSize(wxSize &size) const
+{
+ wxCHECK_RET( m_imageData, wxT("shouldn't be called if no image") );
+
+ // account for the bitmap size
+ const wxSize sizeBmp = m_imageData->GetBitmap(State_Normal).GetSize();
+ const wxDirection dirBmp = m_imageData->GetBitmapPosition();
+ if ( dirBmp == wxLEFT || dirBmp == wxRIGHT )
+ {
+ size.x += sizeBmp.x;
+ if ( sizeBmp.y > size.y )
+ size.y = sizeBmp.y;
+ }
+ else // bitmap on top/below the text
+ {
+ size.y += sizeBmp.y;
+ if ( sizeBmp.x > size.x )
+ size.x = sizeBmp.x;
+ }
+
+ // account for the user-specified margins
+ size += 2*m_imageData->GetBitmapMargins();
+
+ // and also for the margins we always add internally (unless we have no
+ // border at all in which case the button has exactly the same size as
+ // bitmap and so no margins should be used)
+ if ( !HasFlag(wxBORDER_NONE) )
+ {
+ int marginH = 0,
+ marginV = 0;
+#if wxUSE_UXTHEME
+ if ( wxUxThemeEngine::GetIfActive() )
+ {
+ wxUxThemeHandle theme(const_cast<wxAnyButton *>(this), L"BUTTON");
+
+ MARGINS margins;
+ wxUxThemeEngine::Get()->GetThemeMargins(theme, NULL,
+ BP_PUSHBUTTON,
+ PBS_NORMAL,
+ TMT_CONTENTMARGINS,
+ NULL,
+ &margins);
+
+ // XP doesn't draw themed buttons correctly when the client
+ // area is smaller than 8x8 - enforce this minimum size for
+ // small bitmaps
+ size.IncTo(wxSize(8, 8));
+
+ marginH = margins.cxLeftWidth + margins.cxRightWidth
+ + 2*XP_BUTTON_EXTRA_MARGIN;
+ marginV = margins.cyTopHeight + margins.cyBottomHeight
+ + 2*XP_BUTTON_EXTRA_MARGIN;
+ }
+ else
+#endif // wxUSE_UXTHEME
+ {
+ marginH =
+ marginV = OD_BUTTON_MARGIN;
+ }
+
+ size.IncBy(marginH, marginV);
+ }
+}
+
+wxSize wxAnyButton::DoGetBestSize() const
+{
+ wxAnyButton * const self = const_cast<wxAnyButton *>(this);
+
+ wxSize size;
+
+ // Account for the text part if we have it.
+ if ( ShowsLabel() )
+ {
+ int flags = 0;
+ if ( DoGetAuthNeeded() )
+ flags |= wxMSWButton::Size_AuthNeeded;
+
+#if wxUSE_MARKUP
+ if ( m_markupText )
+ {
+ wxClientDC dc(self);
+ size = wxMSWButton::GetFittingSize(self,
+ m_markupText->Measure(dc),
+ flags);
+ }
+ else // Normal plain text (but possibly multiline) label.
+#endif // wxUSE_MARKUP
+ {
+ size = wxMSWButton::ComputeBestFittingSize(self, flags);
+ }
+ }
+
+ if ( m_imageData )
+ AdjustForBitmapSize(size);
+
+ return wxMSWButton::IncreaseToStdSizeAndCache(self, size);
+}
+
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
+
+WXLRESULT wxAnyButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+ if ( nMsg == WM_LBUTTONDBLCLK )
+ {
+ // emulate a click event to force an owner-drawn button to change its
+ // appearance - without this, it won't do it
+ (void)wxControl::MSWWindowProc(WM_LBUTTONDOWN, wParam, lParam);
+
+ // and continue with processing the message normally as well
+ }
+#if wxUSE_UXTHEME
+ else if ( nMsg == WM_THEMECHANGED )
+ {
+ // need to recalculate the best size here
+ // as the theme size might have changed
+ InvalidateBestSize();
+ }
+#endif // wxUSE_UXTHEME
+ // must use m_mouseInWindow here instead of IsMouseInWindow()
+ // since we need to know the first time the mouse enters the window
+ // and IsMouseInWindow() would return true in this case
+ else if ( (nMsg == WM_MOUSEMOVE && !m_mouseInWindow) ||
+ nMsg == WM_MOUSELEAVE )
+ {
+ if (
+ IsEnabled() &&
+ (
+#if wxUSE_UXTHEME
+ wxUxThemeEngine::GetIfActive() ||
+#endif // wxUSE_UXTHEME
+ (m_imageData && m_imageData->GetBitmap(State_Current).IsOk())
+ )
+ )
+ {
+ Refresh();
+ }
+ }
+
+ // let the base class do all real processing
+ return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+}
+
+// ----------------------------------------------------------------------------
+// button images
+// ----------------------------------------------------------------------------
+
+wxBitmap wxAnyButton::DoGetBitmap(State which) const
+{
+ return m_imageData ? m_imageData->GetBitmap(which) : wxBitmap();
+}
+
+void wxAnyButton::DoSetBitmap(const wxBitmap& bitmap, State which)
+{
+#if wxUSE_UXTHEME
+ wxXPButtonImageData *oldData = NULL;
+#endif // wxUSE_UXTHEME
+
+ // Check if we already had bitmaps of different size.
+ if ( m_imageData &&
+ bitmap.GetSize() != m_imageData->GetBitmap(State_Normal).GetSize() )
+ {
+ wxASSERT_MSG( which == State_Normal,
+ "Must set normal bitmap with the new size first" );
+
+#if wxUSE_UXTHEME
+ if ( ShowsLabel() && wxUxThemeEngine::GetIfActive() )
+ {
+ // We can't change the size of the images stored in wxImageList
+ // in wxXPButtonImageData::m_iml so force recreating it below but
+ // keep the current data to copy its values into the new one.
+ oldData = static_cast<wxXPButtonImageData *>(m_imageData);
+ m_imageData = NULL;
+ }
+#endif // wxUSE_UXTHEME
+ //else: wxODButtonImageData doesn't require anything special
+ }
+
+ // allocate the image data when the first bitmap is set
+ if ( !m_imageData )
+ {
+#if wxUSE_UXTHEME
+ // using image list doesn't work correctly if we don't have any label
+ // (even if we use BUTTON_IMAGELIST_ALIGN_CENTER alignment and
+ // BS_BITMAP style), at least under Windows 2003 so use owner drawn
+ // strategy for bitmap-only buttons
+ if ( ShowsLabel() && wxUxThemeEngine::GetIfActive() )
+ {
+ m_imageData = new wxXPButtonImageData(this, bitmap);
+
+ if ( oldData )
+ {
+ // Preserve the old values in case the user changed them.
+ m_imageData->SetBitmapPosition(oldData->GetBitmapPosition());
+
+ const wxSize oldMargins = oldData->GetBitmapMargins();
+ m_imageData->SetBitmapMargins(oldMargins.x, oldMargins.y);
+
+ // No need to preserve the bitmaps though as they were of wrong
+ // size anyhow.
+
+ delete oldData;
+ }
+ }
+ else
+#endif // wxUSE_UXTHEME
+ {
+ m_imageData = new wxODButtonImageData(this, bitmap);
+ MakeOwnerDrawn();
+ }
+ }
+ else
+ {
+ m_imageData->SetBitmap(bitmap, which);
+ }
+
+ // it should be enough to only invalidate the best size when the normal
+ // bitmap changes as all bitmaps assigned to the button should be of the
+ // same size anyhow
+ if ( which == State_Normal )
+ InvalidateBestSize();
+
+ Refresh();
+}
+
+wxSize wxAnyButton::DoGetBitmapMargins() const
+{
+ return m_imageData ? m_imageData->GetBitmapMargins() : wxSize(0, 0);
+}
+
+void wxAnyButton::DoSetBitmapMargins(wxCoord x, wxCoord y)
+{
+ wxCHECK_RET( m_imageData, "SetBitmap() must be called first" );
+
+ m_imageData->SetBitmapMargins(x, y);
+ InvalidateBestSize();
+}
+
+void wxAnyButton::DoSetBitmapPosition(wxDirection dir)
+{
+ wxCHECK_RET( m_imageData, "SetBitmap() must be called first" );
+
+ m_imageData->SetBitmapPosition(dir);
+ InvalidateBestSize();
+}
+
+// ----------------------------------------------------------------------------
+// markup support
+// ----------------------------------------------------------------------------
+
+#if wxUSE_MARKUP
+
+bool wxAnyButton::DoSetLabelMarkup(const wxString& markup)
+{
+ if ( !wxAnyButtonBase::DoSetLabelMarkup(markup) )
+ return false;
+
+ if ( !m_markupText )
+ {
+ m_markupText = new wxMarkupText(markup);
+ MakeOwnerDrawn();
+ }
+ else
+ {
+ // We are already owner-drawn so just update the text.
+ m_markupText->SetMarkup(markup);
+ }
+
+ Refresh();
+
+ return true;
+}
+
+#endif // wxUSE_MARKUP
+
+// ----------------------------------------------------------------------------
+// owner-drawn buttons support
+// ----------------------------------------------------------------------------
+
+// drawing helpers
+namespace
+{
+
+// return the button state using both the ODS_XXX flags specified in state
+// parameter and the current button state
+wxAnyButton::State GetButtonState(wxAnyButton *btn, UINT state)
+{
+ if ( state & ODS_DISABLED )
+ return wxAnyButton::State_Disabled;
+
+ if ( state & ODS_SELECTED )
+ return wxAnyButton::State_Pressed;
+
+ if ( btn->HasCapture() || btn->IsMouseInWindow() )
+ return wxAnyButton::State_Current;
+
+ if ( state & ODS_FOCUS )
+ return wxAnyButton::State_Focused;
+
+ return btn->GetNormalState();
+}
+
+void DrawButtonText(HDC hdc,
+ RECT *pRect,
+ wxAnyButton *btn,
+ int flags)
+{
+ const wxString text = btn->GetLabel();
+
+ if ( text.find(wxT('\n')) != wxString::npos )
+ {
+ // draw multiline label
+
+ // center text horizontally in any case
+ flags |= DT_CENTER;
+
+ // first we need to compute its bounding rect
+ RECT rc;
+ ::CopyRect(&rc, pRect);
+ ::DrawText(hdc, text.wx_str(), text.length(), &rc,
+ DT_CENTER | DT_CALCRECT);
+
+ // now center this rect inside the entire button area
+ const LONG w = rc.right - rc.left;
+ const LONG h = rc.bottom - rc.top;
+ rc.left = (pRect->right - pRect->left)/2 - w/2;
+ rc.right = rc.left+w;
+ rc.top = (pRect->bottom - pRect->top)/2 - h/2;
+ rc.bottom = rc.top+h;
+
+ ::DrawText(hdc, text.wx_str(), text.length(), &rc, flags);
+ }
+ else // single line label
+ {
+ // translate wx button flags to alignment flags for DrawText()
+ if ( btn->HasFlag(wxBU_RIGHT) )
+ {
+ flags |= DT_RIGHT;
+ }
+ else if ( !btn->HasFlag(wxBU_LEFT) )
+ {
+ flags |= DT_CENTER;
+ }
+ //else: DT_LEFT is the default anyhow (and its value is 0 too)
+
+ if ( btn->HasFlag(wxBU_BOTTOM) )
+ {
+ flags |= DT_BOTTOM;
+ }
+ else if ( !btn->HasFlag(wxBU_TOP) )
+ {
+ flags |= DT_VCENTER;
+ }
+ //else: as above, DT_TOP is the default
+
+ // notice that we must have DT_SINGLELINE for vertical alignment flags
+ // to work
+ ::DrawText(hdc, text.wx_str(), text.length(), pRect,
+ flags | DT_SINGLELINE );
+ }
+}
+
+void DrawRect(HDC hdc, const RECT& r)
+{
+ wxDrawLine(hdc, r.left, r.top, r.right, r.top);
+ wxDrawLine(hdc, r.right, r.top, r.right, r.bottom);
+ wxDrawLine(hdc, r.right, r.bottom, r.left, r.bottom);
+ wxDrawLine(hdc, r.left, r.bottom, r.left, r.top);
+}
+
+/*
+ The button frame looks like this normally:
+
+ WWWWWWWWWWWWWWWWWWB
+ WHHHHHHHHHHHHHHHHGB W = white (HILIGHT)
+ WH GB H = light grey (LIGHT)
+ WH GB G = dark grey (SHADOW)
+ WH GB B = black (DKSHADOW)
+ WH GB
+ WGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is selected, the button becomes like this (the total button
+ size doesn't change):
+
+ BBBBBBBBBBBBBBBBBBB
+ BWWWWWWWWWWWWWWWWBB
+ BWHHHHHHHHHHHHHHGBB
+ BWH GBB
+ BWH GBB
+ BWGGGGGGGGGGGGGGGBB
+ BBBBBBBBBBBBBBBBBBB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is pushed (while selected) it is like:
+
+ BBBBBBBBBBBBBBBBBBB
+ BGGGGGGGGGGGGGGGGGB
+ BG GB
+ BG GB
+ BG GB
+ BG GB
+ BGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+*/
+void DrawButtonFrame(HDC hdc, RECT& rectBtn,
+ bool selected, bool pushed)
+{
+ RECT r;
+ CopyRect(&r, &rectBtn);
+
+ AutoHPEN hpenBlack(GetSysColor(COLOR_3DDKSHADOW)),
+ hpenGrey(GetSysColor(COLOR_3DSHADOW)),
+ hpenLightGr(GetSysColor(COLOR_3DLIGHT)),
+ hpenWhite(GetSysColor(COLOR_3DHILIGHT));
+
+ SelectInHDC selectPen(hdc, hpenBlack);
+
+ r.right--;
+ r.bottom--;
+
+ if ( pushed )
+ {
+ DrawRect(hdc, r);
+
+ (void)SelectObject(hdc, hpenGrey);
+ ::InflateRect(&r, -1, -1);
+
+ DrawRect(hdc, r);
+ }
+ else // !pushed
+ {
+ if ( selected )
+ {
+ DrawRect(hdc, r);
+
+ ::InflateRect(&r, -1, -1);
+ }
+
+ wxDrawLine(hdc, r.left, r.bottom, r.right, r.bottom);
+ wxDrawLine(hdc, r.right, r.bottom, r.right, r.top - 1);
+
+ (void)SelectObject(hdc, hpenWhite);
+ wxDrawLine(hdc, r.left, r.bottom - 1, r.left, r.top);
+ wxDrawLine(hdc, r.left, r.top, r.right, r.top);
+
+ (void)SelectObject(hdc, hpenLightGr);
+ wxDrawLine(hdc, r.left + 1, r.bottom - 2, r.left + 1, r.top + 1);
+ wxDrawLine(hdc, r.left + 1, r.top + 1, r.right - 1, r.top + 1);
+
+ (void)SelectObject(hdc, hpenGrey);
+ wxDrawLine(hdc, r.left + 1, r.bottom - 1, r.right - 1, r.bottom - 1);
+ wxDrawLine(hdc, r.right - 1, r.bottom - 1, r.right - 1, r.top);
+ }
+
+ InflateRect(&rectBtn, -OD_BUTTON_MARGIN, -OD_BUTTON_MARGIN);
+}
+
+#if wxUSE_UXTHEME
+void DrawXPBackground(wxAnyButton *button, HDC hdc, RECT& rectBtn, UINT state)
+{
+ wxUxThemeHandle theme(button, L"BUTTON");
+
+ // this array is indexed by wxAnyButton::State values and so must be kept in
+ // sync with it
+ static const int uxStates[] =
+ {
+ PBS_NORMAL, PBS_HOT, PBS_PRESSED, PBS_DISABLED, PBS_DEFAULTED
+ };
+
+ int iState = uxStates[GetButtonState(button, state)];
+
+ wxUxThemeEngine * const engine = wxUxThemeEngine::Get();
+
+ // draw parent background if needed
+ if ( engine->IsThemeBackgroundPartiallyTransparent
+ (
+ theme,
+ BP_PUSHBUTTON,
+ iState
+ ) )
+ {
+ // Set this button as the one whose background is being erased: this
+ // allows our WM_ERASEBKGND handler used by DrawThemeParentBackground()
+ // to correctly align the background brush with this window instead of
+ // the parent window to which WM_ERASEBKGND is sent. Notice that this
+ // doesn't work with custom user-defined EVT_ERASE_BACKGROUND handlers
+ // as they won't be aligned but unfortunately all the attempts to fix
+ // it by shifting DC origin before calling DrawThemeParentBackground()
+ // failed to work so we at least do this, even though this is far from
+ // being the perfect solution.
+ wxWindowBeingErased = button;
+
+ engine->DrawThemeParentBackground(GetHwndOf(button), hdc, &rectBtn);
+
+ wxWindowBeingErased = NULL;
+ }
+
+ // draw background
+ engine->DrawThemeBackground(theme, hdc, BP_PUSHBUTTON, iState,
+ &rectBtn, NULL);
+
+ // calculate content area margins
+ MARGINS margins;
+ engine->GetThemeMargins(theme, hdc, BP_PUSHBUTTON, iState,
+ TMT_CONTENTMARGINS, &rectBtn, &margins);
+ ::InflateRect(&rectBtn, -margins.cxLeftWidth, -margins.cyTopHeight);
+ ::InflateRect(&rectBtn, -XP_BUTTON_EXTRA_MARGIN, -XP_BUTTON_EXTRA_MARGIN);
+
+ if ( button->UseBgCol() )
+ {
+ COLORREF colBg = wxColourToRGB(button->GetBackgroundColour());
+ AutoHBRUSH hbrushBackground(colBg);
+
+ // don't overwrite the focus rect
+ RECT rectClient;
+ ::CopyRect(&rectClient, &rectBtn);
+ ::InflateRect(&rectClient, -1, -1);
+ FillRect(hdc, &rectClient, hbrushBackground);
+ }
+}
+#endif // wxUSE_UXTHEME
+
+} // anonymous namespace
+
+// ----------------------------------------------------------------------------
+// owner drawn buttons support
+// ----------------------------------------------------------------------------
+
+void wxAnyButton::MakeOwnerDrawn()
+{
+ if ( !IsOwnerDrawn() )
+ {
+ // make it so
+ // note that BS_OWNERDRAW is not independent from other style bits
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ style &= ~(BS_3STATE | BS_AUTO3STATE | BS_AUTOCHECKBOX | BS_AUTORADIOBUTTON | BS_CHECKBOX | BS_DEFPUSHBUTTON | BS_GROUPBOX | BS_PUSHBUTTON | BS_RADIOBUTTON | BS_PUSHLIKE);
+ style |= BS_OWNERDRAW;
+ SetWindowLong(GetHwnd(), GWL_STYLE, style);
+ }
+}
+
+bool wxAnyButton::IsOwnerDrawn() const
+{
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ return ( (style & BS_OWNERDRAW) == BS_OWNERDRAW );
+}
+
+bool wxAnyButton::SetBackgroundColour(const wxColour &colour)
+{
+ if ( !wxControl::SetBackgroundColour(colour) )
+ {
+ // nothing to do
+ return false;
+ }
+
+ MakeOwnerDrawn();
+
+ Refresh();
+
+ return true;
+}
+
+bool wxAnyButton::SetForegroundColour(const wxColour &colour)
+{
+ if ( !wxControl::SetForegroundColour(colour) )
+ {
+ // nothing to do
+ return false;
+ }
+
+ MakeOwnerDrawn();
+
+ Refresh();
+
+ return true;
+}
+
+bool wxAnyButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
+{
+ LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis;
+ HDC hdc = lpDIS->hDC;
+
+ UINT state = lpDIS->itemState;
+ switch ( GetButtonState(this, state) )
+ {
+ case State_Disabled:
+ state |= ODS_DISABLED;
+ break;
+ case State_Pressed:
+ state |= ODS_SELECTED;
+ break;
+ case State_Focused:
+ state |= ODS_FOCUS;
+ break;
+ default:
+ break;
+ }
+
+ bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0;
+
+ RECT rectBtn;
+ CopyRect(&rectBtn, &lpDIS->rcItem);
+
+ // draw the button background
+ if ( !HasFlag(wxBORDER_NONE) )
+ {
+#if wxUSE_UXTHEME
+ if ( wxUxThemeEngine::GetIfActive() )
+ {
+ DrawXPBackground(this, hdc, rectBtn, state);
+ }
+ else
+#endif // wxUSE_UXTHEME
+ {
+ COLORREF colBg = wxColourToRGB(GetBackgroundColour());
+
+ // first, draw the background
+ AutoHBRUSH hbrushBackground(colBg);
+ FillRect(hdc, &rectBtn, hbrushBackground);
+
+ // draw the border for the current state
+ bool selected = (state & ODS_SELECTED) != 0;
+ if ( !selected )
+ {
+ wxTopLevelWindow *
+ tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+ if ( tlw )
+ {
+ selected = tlw->GetDefaultItem() == this;
+ }
+ }
+
+ DrawButtonFrame(hdc, rectBtn, selected, pushed);
+ }
+
+ // draw the focus rectangle if we need it
+ if ( (state & ODS_FOCUS) && !(state & ODS_NOFOCUSRECT) )
+ {
+ DrawFocusRect(hdc, &rectBtn);
+
+#if wxUSE_UXTHEME
+ if ( !wxUxThemeEngine::GetIfActive() )
+#endif // wxUSE_UXTHEME
+ {
+ if ( pushed )
+ {
+ // the label is shifted by 1 pixel to create "pushed" effect
+ OffsetRect(&rectBtn, 1, 1);
+ }
+ }
+ }
+ }
+
+
+ // draw the image, if any
+ if ( m_imageData )
+ {
+ wxBitmap bmp = m_imageData->GetBitmap(GetButtonState(this, state));
+ if ( !bmp.IsOk() )
+ bmp = m_imageData->GetBitmap(GetNormalState());
+
+ const wxSize sizeBmp = bmp.GetSize();
+ const wxSize margin = m_imageData->GetBitmapMargins();
+ const wxSize sizeBmpWithMargins(sizeBmp + 2*margin);
+ wxRect rectButton(wxRectFromRECT(rectBtn));
+
+ // for simplicity, we start with centred rectangle and then move it to
+ // the appropriate edge
+ wxRect rectBitmap = wxRect(sizeBmp).CentreIn(rectButton);
+
+ // move bitmap only if we have a label, otherwise keep it centered
+ if ( ShowsLabel() )
+ {
+ switch ( m_imageData->GetBitmapPosition() )
+ {
+ default:
+ wxFAIL_MSG( "invalid direction" );
+ // fall through
+
+ case wxLEFT:
+ rectBitmap.x = rectButton.x + margin.x;
+ rectButton.x += sizeBmpWithMargins.x;
+ rectButton.width -= sizeBmpWithMargins.x;
+ break;
+
+ case wxRIGHT:
+ rectBitmap.x = rectButton.GetRight() - sizeBmp.x - margin.x;
+ rectButton.width -= sizeBmpWithMargins.x;
+ break;
+
+ case wxTOP:
+ rectBitmap.y = rectButton.y + margin.y;
+ rectButton.y += sizeBmpWithMargins.y;
+ rectButton.height -= sizeBmpWithMargins.y;
+ break;
+
+ case wxBOTTOM:
+ rectBitmap.y = rectButton.GetBottom() - sizeBmp.y - margin.y;
+ rectButton.height -= sizeBmpWithMargins.y;
+ break;
+ }
+ }
+
+ wxDCTemp dst((WXHDC)hdc);
+ dst.DrawBitmap(bmp, rectBitmap.GetPosition(), true);
+
+ wxCopyRectToRECT(rectButton, rectBtn);
+ }
+
+
+ // finally draw the label
+ if ( ShowsLabel() )
+ {
+ COLORREF colFg = state & ODS_DISABLED
+ ? ::GetSysColor(COLOR_GRAYTEXT)
+ : wxColourToRGB(GetForegroundColour());
+
+ wxTextColoursChanger changeFg(hdc, colFg, CLR_INVALID);
+ wxBkModeChanger changeBkMode(hdc, wxBRUSHSTYLE_TRANSPARENT);
+
+#if wxUSE_MARKUP
+ if ( m_markupText )
+ {
+ wxDCTemp dc((WXHDC)hdc);
+ dc.SetTextForeground(wxColour(colFg));
+ dc.SetFont(GetFont());
+
+ m_markupText->Render(dc, wxRectFromRECT(rectBtn),
+ state & ODS_NOACCEL
+ ? wxMarkupText::Render_Default
+ : wxMarkupText::Render_ShowAccels);
+ }
+ else // Plain text label
+#endif // wxUSE_MARKUP
+ {
+ // notice that DT_HIDEPREFIX doesn't work on old (pre-Windows 2000)
+ // systems but by happy coincidence ODS_NOACCEL is not used under
+ // them neither so DT_HIDEPREFIX should never be used there
+ DrawButtonText(hdc, &rectBtn, this,
+ state & ODS_NOACCEL ? DT_HIDEPREFIX : 0);
+ }
+ }
+
+ return true;
+}
+
+#endif // wxHAS_ANY_BUTTON
projects / wxWidgets.git / commitdiff
