X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/31dcbd12ef41de81f46e09f2a1694d5f83f08cff..d485bda109d5ef0fef36a3f737549e9b9f54baab:/src/msw/button.cpp?ds=sidebyside diff --git a/src/msw/button.cpp b/src/msw/button.cpp index 50ea2ad9f2..324803e4d8 100644 --- a/src/msw/button.cpp +++ b/src/msw/button.cpp @@ -52,396 +52,24 @@ #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 - // set the value for BCM_SETSHIELD (for the UAC shield) if it's not defined in // the header #ifndef BCM_SETSHIELD #define BCM_SETSHIELD 0x160c #endif -// ---------------------------------------------------------------------------- -// 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(wxButton::State which) const = 0; - virtual void SetBitmap(const wxBitmap& bitmap, wxButton::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(wxButton *btn, const wxBitmap& bitmap) - { - SetBitmap(bitmap, wxButton::State_Normal); - - 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(wxButton::State which) const - { - return m_bitmaps[which]; - } - - virtual void SetBitmap(const wxBitmap& bitmap, wxButton::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[wxButton::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(wxButton *btn, const wxBitmap& bitmap) - : m_iml(bitmap.GetWidth(), bitmap.GetHeight(), true /* use mask */, - wxButton::State_Max), - m_hwndBtn(GetHwndOf(btn)) - { - // initialize all bitmaps to normal state - for ( int n = 0; n < wxButton::State_Max; n++ ) - { - m_iml.Add(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(wxButton::State which) const - { - return m_iml.GetBitmap(which); - } - - virtual void SetBitmap(const wxBitmap& bitmap, wxButton::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 // ---------------------------------------------------------------------------- +BEGIN_EVENT_TABLE(wxButton, wxButtonBase) + EVT_CHAR_HOOK(wxButton::OnCharHook) +END_EVENT_TABLE() + // ============================================================================ // 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 // ---------------------------------------------------------------------------- @@ -492,11 +120,6 @@ wxButton::~wxButton() { UnsetTmpDefault(); } - - delete m_imageData; -#if wxUSE_MARKUP - delete m_markupText; -#endif // wxUSE_MARKUP } // ---------------------------------------------------------------------------- @@ -512,7 +135,7 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const ); // we must use WS_CLIPSIBLINGS with the buttons or they would draw over - // each other in any resizeable dialog which has more than one button in + // each other in any resizable dialog which has more than one button in // the bottom msStyle |= WS_CLIPSIBLINGS; @@ -535,132 +158,6 @@ WXDWORD wxButton::MSWGetStyle(long style, WXDWORD *exstyle) const return msStyle; } -void wxButton::SetLabel(const wxString& label) -{ - wxMSWButton::UpdateMultilineStyle(GetHwnd(), label); - - wxButtonBase::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 wxButton::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(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 wxButton::DoGetBestSize() const -{ - wxButton * const self = const_cast(this); - - wxSize size; - - // Account for the text part if we have it. - if ( ShowsLabel() ) - { - int flags = 0; - if ( GetAuthNeeded() ) - 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); -} - /* static */ wxSize wxButtonBase::GetDefaultSize() { @@ -695,16 +192,25 @@ wxSize wxButtonBase::GetDefaultSize() // ---------------------------------------------------------------------------- /* - The comment below and all this code is probably due to not using WM_NEXTDLGCTL - message when changing focus (but just SetFocus() which is not enough), see - http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for the - full explanation. + In normal Windows programs there is no need to handle default button + manually because this is taken care by the system provided you use + WM_NEXTDLGCTL and not just SetFocus() to switch focus betweeh the controls + (see http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for + the full explanation why just calling SetFocus() is not enough). + + However this only works if the window is a dialog, i.e. uses DefDlgProc(), + but not with plain windows using DefWindowProc() and we do want to have + default buttons inside frames as well, so we're forced to reimplement all + this logic ourselves. It would be great to avoid having to do this but using + DefDlgProc() for all the windows would almost certainly result in more + problems, we'd need to carefully filter messages and pass some of them to + DefWindowProc() and some of them to DefDlgProc() which looks dangerous (what + if the handling of some message changes in some Windows version?), so doing + this ourselves is probably a lesser evil. + + Read the rest to learn everything you ever wanted to know about the default + buttons but were afraid to ask. - TODO: Do use WM_NEXTDLGCTL and get rid of all this code. - - - "Everything you ever wanted to know about the default buttons" or "Why do we - have to do all this?" In MSW the default button should be activated when the user presses Enter and the current control doesn't process Enter itself somehow. This is @@ -726,14 +232,6 @@ wxSize wxButtonBase::GetDefaultSize() to it. When the button loses focus, it unsets the temporary default and so the default item will be the permanent default -- that is the default button if any had been set or none otherwise, which is just what we want. - - NB: all this is quite complicated by now and the worst is that normally - it shouldn't be necessary at all as for the normal Windows programs - DefWindowProc() and IsDialogMessage() take care of all this - automatically -- however in wxWidgets programs this doesn't work for - nested hierarchies (i.e. a notebook inside a notebook) for unknown - reason and so we have to reproduce all this code ourselves. It would be - very nice if we could avoid doing it. */ // set this button as the (permanently) default one in its panel @@ -780,7 +278,7 @@ static wxTopLevelWindow *GetTLWParentIfNotBeingDeleted(wxWindow *win) // set this button as being currently default void wxButton::SetTmpDefault() { - wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this); if ( !tlw ) return; @@ -794,7 +292,7 @@ void wxButton::SetTmpDefault() // unset this button as currently default, it may still stay permanent default void wxButton::UnsetTmpDefault() { - wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(GetParent()); + wxTopLevelWindow * const tlw = GetTLWParentIfNotBeingDeleted(this); if ( !tlw ) return; @@ -877,6 +375,25 @@ void wxButton::Command(wxCommandEvent & event) // event/message handlers // ---------------------------------------------------------------------------- +void wxButton::OnCharHook(wxKeyEvent& event) +{ + // We want to ensure that the button always processes Enter key events + // itself, even if it's inside some control that normally takes over them + // (this happens when the button is part of an in-place editor control for + // example). + if ( event.GetKeyCode() == WXK_RETURN ) + { + // We should ensure that subsequent key events are still generated even + // if we did handle EVT_CHAR_HOOK (normally this would suppress their + // generation). + event.DoAllowNextEvent(); + } + else + { + event.Skip(); + } +} + bool wxButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) { bool processed = false; @@ -916,44 +433,9 @@ WXLRESULT wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) { UnsetTmpDefault(); } - else 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); + return wxAnyButton::MSWWindowProc(nMsg, wParam, lParam); } // ---------------------------------------------------------------------------- @@ -976,535 +458,5 @@ void wxButton::DoSetAuthNeeded(bool show) } } -// ---------------------------------------------------------------------------- -// button images -// ---------------------------------------------------------------------------- - -wxBitmap wxButton::DoGetBitmap(State which) const -{ - return m_imageData ? m_imageData->GetBitmap(which) : wxBitmap(); -} - -void wxButton::DoSetBitmap(const wxBitmap& bitmap, State which) -{ - // 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); - } - 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 wxButton::DoGetBitmapMargins() const -{ - return m_imageData ? m_imageData->GetBitmapMargins() : wxSize(0, 0); -} - -void wxButton::DoSetBitmapMargins(wxCoord x, wxCoord y) -{ - wxCHECK_RET( m_imageData, "SetBitmap() must be called first" ); - - m_imageData->SetBitmapMargins(x, y); - InvalidateBestSize(); -} - -void wxButton::DoSetBitmapPosition(wxDirection dir) -{ - wxCHECK_RET( m_imageData, "SetBitmap() must be called first" ); - - m_imageData->SetBitmapPosition(dir); - InvalidateBestSize(); -} - -// ---------------------------------------------------------------------------- -// markup support -// ---------------------------------------------------------------------------- - -#if wxUSE_MARKUP - -bool wxButton::DoSetLabelMarkup(const wxString& markup) -{ - if ( !wxButtonBase::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 -wxButton::State GetButtonState(wxButton *btn, UINT state) -{ - if ( state & ODS_DISABLED ) - return wxButton::State_Disabled; - - if ( state & ODS_SELECTED ) - return wxButton::State_Pressed; - - if ( btn->HasCapture() || btn->IsMouseInWindow() ) - return wxButton::State_Current; - - if ( state & ODS_FOCUS ) - return wxButton::State_Focused; - - return wxButton::State_Normal; -} - -void DrawButtonText(HDC hdc, - RECT *pRect, - wxButton *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(wxButton *button, HDC hdc, RECT& rectBtn, UINT state) -{ - wxUxThemeHandle theme(button, L"BUTTON"); - - // this array is indexed by wxButton::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 - ) ) - { - engine->DrawThemeParentBackground(GetHwndOf(button), hdc, &rectBtn); - } - - // 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 wxButton::MakeOwnerDrawn() -{ - long style = GetWindowLong(GetHwnd(), GWL_STYLE); - if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW ) - { - // make it so - style |= BS_OWNERDRAW; - SetWindowLong(GetHwnd(), GWL_STYLE, style); - } -} - -bool wxButton::SetBackgroundColour(const wxColour &colour) -{ - if ( !wxControl::SetBackgroundColour(colour) ) - { - // nothing to do - return false; - } - - MakeOwnerDrawn(); - - Refresh(); - - return true; -} - -bool wxButton::SetForegroundColour(const wxColour &colour) -{ - if ( !wxControl::SetForegroundColour(colour) ) - { - // nothing to do - return false; - } - - MakeOwnerDrawn(); - - Refresh(); - - return true; -} - -bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis) -{ - LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis; - HDC hdc = lpDIS->hDC; - - UINT state = lpDIS->itemState; - 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(State_Normal); - - 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 // wxUSE_BUTTON