/////////////////////////////////////////////////////////////////////////////
-// Name: button.cpp
+// Name: msw/button.cpp
// Purpose: wxButton
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation "button.h"
+ #pragma implementation "button.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/button.h"
+ #include "wx/button.h"
+ #include "wx/brush.h"
+ #include "wx/panel.h"
+ #include "wx/bmpbuttn.h"
+ #include "wx/settings.h"
+ #include "wx/dcscreen.h"
#endif
#include "wx/msw/private.h"
-#if !USE_SHARED_LIBRARY
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
-#endif
+// this macro tries to adjust the default button height to a reasonable value
+// using the char height as the base
#define BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cy) (11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)/10)
-// Buttons
-
-bool wxButton::MSWCommand(WXUINT param, WXWORD id)
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// creation/destruction
+// ----------------------------------------------------------------------------
+
+bool wxButton::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxString& label,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxValidator& validator,
+ const wxString& name)
{
- if (param == BN_CLICKED || (param == 1)) // 1 for accelerator
- {
- wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, id);
- event.SetEventObject(this);
- ProcessCommand(event);
+ if ( !CreateBase(parent, id, pos, size, style, validator, name) )
+ return FALSE;
+
+ parent->AddChild((wxButton *)this);
+
+ m_backgroundColour = parent->GetBackgroundColour();
+ m_foregroundColour = parent->GetForegroundColour();
+
+
+ m_hWnd = (WXHWND)CreateWindowEx
+ (
+ MakeExtendedStyle(m_windowStyle),
+ wxT("BUTTON"),
+ label,
+ WS_VISIBLE | WS_TABSTOP | WS_CHILD,
+ 0, 0, 0, 0,
+ GetWinHwnd(parent),
+ (HMENU)m_windowId,
+ wxGetInstance(),
+ NULL
+ );
+
+ // Subclass again for purposes of dialog editing mode
+ SubclassWin(m_hWnd);
+
+ SetFont(parent->GetFont());
+
+ SetSize(pos.x, pos.y, size.x, size.y);
+
return TRUE;
- }
- else return FALSE;
}
-bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
- const wxPoint& pos,
- const wxSize& size, long style,
- const wxValidator& validator,
- const wxString& name)
+wxButton::~wxButton()
+{
+ wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+ if ( panel )
+ {
+ if ( panel->GetDefaultItem() == this )
+ {
+ // don't leave the panel with invalid default item
+ panel->SetDefaultItem(NULL);
+ }
+ }
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
{
- SetName(name);
- SetValidator(validator);
+ wxString label = wxGetWindowText(GetHWND());
+ int wBtn;
+ GetTextExtent(label, &wBtn, NULL);
- parent->AddChild((wxButton *)this);
- m_backgroundColour = parent->GetBackgroundColour() ;
- m_foregroundColour = parent->GetForegroundColour() ;
+ int wChar, hChar;
+ wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
- m_windowStyle = (long&)style;
+ // add a margin - the button is wider than just its label
+ wBtn += 3*wChar;
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
+ // the button height is proportional to the height of the font used
+ int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
- if (id == -1)
- m_windowId = NewControlId();
- else
- m_windowId = id;
+ wxSize sz = GetDefaultSize();
+ if (wBtn > sz.x) sz.x = wBtn;
+ if (hBtn > sz.y) sz.y = hBtn;
- DWORD exStyle = MakeExtendedStyle(m_windowStyle);
- HWND wx_button =
- CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD,
- 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
+ return sz;
+}
-#if CTL3D
-// if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
-// Ctl3dSubclassCtl(wx_button);
-#endif
+/* static */
+wxSize wxButton::GetDefaultSize()
+{
+ static wxSize s_sizeBtn;
+
+ if ( s_sizeBtn.x == 0 )
+ {
+ wxScreenDC dc;
+ dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+ // the size of a standard button in the dialog units is 50x14,
+ // translate this to pixels
+ // NB1: the multipliers come from the Windows convention
+ // NB2: the extra +1/+2 were needed to get the size be the same as the
+ // size of the buttons in the standard dialog - I don't know how
+ // this happens, but on my system this size is 75x23 in pixels and
+ // 23*8 isn't even divisible by 14... Would be nice to understand
+ // why these constants are needed though!
+ s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+ s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+ }
+
+ return s_sizeBtn;
+}
- m_hWnd = (WXHWND)wx_button;
+// ----------------------------------------------------------------------------
+// set this button as the default one in its panel
+// ----------------------------------------------------------------------------
- // Subclass again for purposes of dialog editing mode
- SubclassWin((WXHWND)wx_button);
+void wxButton::SetDefault()
+{
+ wxWindow *parent = GetParent();
+ wxButton *btnOldDefault = NULL;
+ wxPanel *panel = wxDynamicCast(parent, wxPanel);
+ if ( panel )
+ {
+ btnOldDefault = panel->GetDefaultItem();
+ panel->SetDefaultItem(this);
+ }
+
+ if ( parent )
+ {
+ SendMessage(GetWinHwnd(parent), DM_SETDEFID, m_windowId, 0L);
+ }
+
+ if ( btnOldDefault )
+ {
+ // remove the BS_DEFPUSHBUTTON style from the other button
+ long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
+
+ // don't do it with the owner drawn buttons because it will reset
+ // BS_OWNERDRAW style bit too (BS_OWNERDRAW & BS_DEFPUSHBUTTON != 0)!
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ style &= ~BS_DEFPUSHBUTTON;
+ SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+ }
+ else
+ {
+ // redraw the button - it will notice itself that it's not the
+ // default one any longer
+ btnOldDefault->Refresh();
+ }
+ }
+
+ // set this button as the default
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ style |= BS_DEFPUSHBUTTON;
+ SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
+ }
+}
- SetFont(parent->GetFont());
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
- SetSize(x, y, width, height);
- ShowWindow(wx_button, SW_SHOW);
+bool wxButton::SendClickEvent()
+{
+ wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+ event.SetEventObject(this);
- return TRUE;
+ return ProcessCommand(event);
}
-void wxButton::SetSize(int x, int y, int width, int height, int sizeFlags)
+void wxButton::Command(wxCommandEvent & event)
{
- int currentX, currentY;
- GetPosition(¤tX, ¤tY);
- int x1 = x;
- int y1 = y;
- if (x == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
- x1 = currentX;
- if (y == -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
- y1 = currentY;
+ ProcessCommand(event);
+}
- AdjustForParentClientOrigin(x1, y1, sizeFlags);
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
- int actualWidth = width;
- int actualHeight = height;
- int ww, hh;
- GetSize(&ww, &hh);
+bool wxButton::MSWCommand(WXUINT param, WXWORD id)
+{
+ bool processed = FALSE;
+ switch ( param )
+ {
+ case 1: // means that the message came from an accelerator
+ case BN_CLICKED:
+ processed = SendClickEvent();
+ break;
+ }
+
+ return processed;
+}
- int current_width;
- int cyf;
- char buf[300];
- GetWindowText((HWND) GetHWND(), buf, 300);
- GetTextExtent(buf, ¤t_width, &cyf,NULL,NULL,& GetFont());
+long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+ // when we receive focus, we want to become the default button in our
+ // parent panel
+ if ( nMsg == WM_SETFOCUS )
+ {
+ SetDefault();
- // If we're prepared to use the existing width, then...
- if (width == -1 && ((sizeFlags & wxSIZE_AUTO_WIDTH) != wxSIZE_AUTO_WIDTH))
- actualWidth = ww;
- else if (width == -1)
- {
- int cx;
- int cy;
- wxGetCharSize(GetHWND(), &cx, &cy,& GetFont());
- actualWidth = (int)(current_width + 3*cx) ;
- }
-
- // If we're prepared to use the existing height, then...
- if (height == -1 && ((sizeFlags & wxSIZE_AUTO_HEIGHT) != wxSIZE_AUTO_HEIGHT))
- actualHeight = hh;
- else if (height == -1)
- {
- actualHeight = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(cyf);
- }
+ // let the default processign take place too
+ }
- MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
+ // let the base class do all real processing
+ return wxControl::MSWWindowProc(nMsg, wParam, lParam);
}
-void wxButton::SetDefault(void)
+// ----------------------------------------------------------------------------
+// owner-drawn buttons support
+// ----------------------------------------------------------------------------
+
+#ifdef __WIN32__
+
+// drawing helpers
+
+static void DrawButtonText(HDC hdc,
+ RECT *pRect,
+ const wxString& text,
+ COLORREF col)
{
- wxWindow *parent = (wxWindow *)GetParent();
- if (parent)
- parent->SetDefaultItem(this);
+ COLORREF colOld = SetTextColor(hdc, col);
+ int modeOld = SetBkMode(hdc, TRANSPARENT);
- if (parent)
- {
- SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
- }
+ DrawText(hdc, text, text.length(), pRect,
+ DT_CENTER | DT_VCENTER | DT_SINGLELINE);
- SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
+ SetBkMode(hdc, modeOld);
+ SetTextColor(hdc, colOld);
}
-wxString wxButton::GetLabel(void) const
+static void DrawRect(HDC hdc, const RECT& r)
{
- GetWindowText((HWND) GetHWND(), wxBuffer, 300);
- return wxString(wxBuffer);
+ MoveToEx(hdc, r.left, r.top, NULL);
+ LineTo(hdc, r.right, r.top);
+ LineTo(hdc, r.right, r.bottom);
+ LineTo(hdc, r.left, r.bottom);
+ LineTo(hdc, r.left, r.top);
}
-void wxButton::SetLabel(const wxString& label)
+void wxButton::MakeOwnerDrawn()
{
- SetWindowText((HWND) GetHWND(), (const char *) label);
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ if ( (style & BS_OWNERDRAW) != BS_OWNERDRAW )
+ {
+ // make it so
+ style |= BS_OWNERDRAW;
+ SetWindowLong(GetHwnd(), GWL_STYLE, style);
+ }
}
-WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+bool wxButton::SetBackgroundColour(const wxColour &colour)
{
-/*
- WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
-// ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
- ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
- GetForegroundColour().Blue()));
+ if ( !wxControl::SetBackgroundColour(colour) )
+ {
+ // nothing to do
+ return FALSE;
+ }
- return hBrush;
-*/
- // This doesn't in fact seem to make any difference at all - buttons are always
- // the same colour.
- ::SetBkColor((HDC) pDC, RGB(GetBackgroundColour().Red(), GetBackgroundColour().Green(), GetBackgroundColour().Blue()));
- ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(), GetForegroundColour().Blue()));
+ MakeOwnerDrawn();
- wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
+ Refresh();
- // Note that this will be cleaned up in wxApp::OnIdle, if backgroundBrush
- // has a zero usage count.
- // NOT NOW; CHANGED.
-// backgroundBrush->RealizeResource();
- return (WXHBRUSH) backgroundBrush->GetResourceHandle();
+ return TRUE;
}
-void wxButton::Command (wxCommandEvent & event)
+bool wxButton::SetForegroundColour(const wxColour &colour)
{
- ProcessCommand (event);
+ if ( !wxControl::SetForegroundColour(colour) )
+ {
+ // nothing to do
+ return FALSE;
+ }
+
+ MakeOwnerDrawn();
+
+ Refresh();
+
+ return TRUE;
+}
+
+/*
+ The button frame looks like this normally:
+
+ WWWWWWWWWWWWWWWWWWB
+ W GB
+ W GB
+ W GB where W, G, B are white, grey and black pixels
+ W GB
+ WGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is selected, the button becomes like this (the total button
+ size doesn't change):
+
+ BBBBBBBBBBBBBBBBBBB
+ BWWWWWWWWWWWWWWWWBB
+ BW GBB
+ BW GBB
+ BWGGGGGGGGGGGGGGGBB
+ BBBBBBBBBBBBBBBBBBB
+ BBBBBBBBBBBBBBBBBBB
+
+ When the button is pushed (while selected) it is like:
+
+ BBBBBBBBBBBBBBBBBBB
+ BGGGGGGGGGGGGGGGGGB
+ BG GB
+ BG GB
+ BG GB
+ BGGGGGGGGGGGGGGGGGB
+ BBBBBBBBBBBBBBBBBBB
+*/
+
+static void DrawButtonFrame(HDC hdc, const RECT& rectBtn,
+ bool selected, bool pushed)
+{
+ RECT r;
+ CopyRect(&r, &rectBtn);
+
+ HPEN hpenBlack = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DDKSHADOW)),
+ hpenGrey = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW)),
+ hpenWhite = CreatePen(PS_SOLID, 1, GetSysColor(COLOR_3DHILIGHT));
+
+ HPEN hpenOld = (HPEN)SelectObject(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);
+ }
+
+ MoveToEx(hdc, r.left, r.bottom, NULL);
+ LineTo(hdc, r.right, r.bottom);
+ LineTo(hdc, r.right, r.top - 1);
+
+ (void)SelectObject(hdc, hpenWhite);
+ MoveToEx(hdc, r.left, r.bottom - 1, NULL);
+ LineTo(hdc, r.left, r.top);
+ LineTo(hdc, r.right, r.top);
+
+ (void)SelectObject(hdc, hpenGrey);
+ MoveToEx(hdc, r.left + 1, r.bottom - 1, NULL);
+ LineTo(hdc, r.right - 1, r.bottom - 1);
+ LineTo(hdc, r.right - 1, r.top);
+ }
+
+ (void)SelectObject(hdc, hpenOld);
+ DeleteObject(hpenWhite);
+ DeleteObject(hpenGrey);
+ DeleteObject(hpenBlack);
}
+bool wxButton::MSWOnDraw(WXDRAWITEMSTRUCT *wxdis)
+{
+ LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT)wxdis;
+
+ RECT rectBtn;
+ CopyRect(&rectBtn, &lpDIS->rcItem);
+
+ COLORREF colBg = wxColourToRGB(GetBackgroundColour()),
+ colFg = wxColourToRGB(GetForegroundColour());
+
+ HDC hdc = lpDIS->hDC;
+ UINT state = lpDIS->itemState;
+
+ // first, draw the background
+ HBRUSH hbrushBackground = ::CreateSolidBrush(colBg);
+
+ FillRect(hdc, &rectBtn, hbrushBackground);
+
+ // draw the border for the current state
+ bool selected = (state & ODS_SELECTED) != 0;
+ if ( !selected )
+ {
+ wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+ if ( panel )
+ {
+ selected = panel->GetDefaultItem() == this;
+ }
+ }
+ bool pushed = (SendMessage(GetHwnd(), BM_GETSTATE, 0, 0) & BST_PUSHED) != 0;
+
+ DrawButtonFrame(hdc, rectBtn, selected, pushed);
+
+ // draw the focus rect if needed
+ if ( state & ODS_FOCUS )
+ {
+ RECT rectFocus;
+ CopyRect(&rectFocus, &rectBtn);
+
+ // I don't know where does this constant come from, but this is how
+ // Windows draws them
+ InflateRect(&rectFocus, -4, -4);
+
+ DrawFocusRect(hdc, &rectFocus);
+ }
+
+ if ( pushed )
+ {
+ // the label is shifted by 1 pixel to create "pushed" effect
+ OffsetRect(&rectBtn, 1, 1);
+ }
+
+ DrawButtonText(hdc, &rectBtn, GetLabel(),
+ state & ODS_DISABLED ? GetSysColor(COLOR_GRAYTEXT)
+ : colFg);
+
+ ::DeleteObject(hbrushBackground);
+
+ return TRUE;
+}
+#endif // __WIN32__
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