// 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/brush.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"
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
+ 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);
+
+ // bad hack added by Robert to make buttons at least
+ // 80 pixels wide. There are probably better ways...
+ // TODO. FIXME.
+ wxSize nsize( GetSize() );
+ if ((nsize.x < 80) || (nsize.y < 23))
+ {
+ if ((size.x == -1) && (nsize.x < 80))
+ nsize.x = 80;
+ if ((size.y == -1) && (nsize.y < 23))
+ nsize.y = 23;
+ SetSize( nsize );
+ }
+
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()
{
- SetName(name);
- SetValidator(validator);
-
- parent->AddChild((wxButton *)this);
- m_backgroundColour = parent->GetBackgroundColour() ;
- m_foregroundColour = parent->GetForegroundColour() ;
-
- m_windowStyle = (long&)style;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
-
- if (id == -1)
- m_windowId = NewControlId();
- else
- m_windowId = id;
-
- m_hWnd = (WXHWND)CreateWindowEx
- (
- MakeExtendedStyle(m_windowStyle),
- "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(x, y, width, height);
-
- return TRUE;
+ wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+ if ( panel )
+ {
+ if ( panel->GetDefaultItem() == this )
+ {
+ // don't leave the panel with invalid default item
+ panel->SetDefaultItem(NULL);
+ }
+ }
}
-void wxButton::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize()
{
- 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;
-
- AdjustForParentClientOrigin(x1, y1, sizeFlags);
-
- int actualWidth = width;
- int actualHeight = height;
- int ww, hh;
- GetSize(&ww, &hh);
-
- int current_width;
- int cyf;
- char buf[300];
- GetWindowText((HWND) GetHWND(), buf, 300);
- GetTextExtent(buf, ¤t_width, &cyf,NULL,NULL,
- & this->GetFont());
-
- // 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, & this->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);
- }
-
- MoveWindow((HWND) GetHWND(), x1, y1, actualWidth, actualHeight, TRUE);
+ wxString label = wxGetWindowText(GetHWND());
+ int wBtn;
+ GetTextExtent(label, &wBtn, NULL);
+
+ int wChar, hChar;
+ wxGetCharSize(GetHWND(), &wChar, &hChar, &GetFont());
+
+ // add a margin - the button is wider than just its label
+ wBtn += 3*wChar;
+
+ // the button height is proportional to the height of the font used
+ int hBtn = BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
+
+ return wxSize(wBtn, hBtn);
}
-void wxButton::SetDefault(void)
+/* static */
+wxSize wxButton::GetDefaultSize()
{
- wxWindow *parent = (wxWindow *)GetParent();
- if (parent)
- parent->SetDefaultItem(this);
+ 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;
+}
- if (parent)
- {
- SendMessage((HWND)parent->GetHWND(), DM_SETDEFID, m_windowId, 0L);
- }
+// ----------------------------------------------------------------------------
+// set this button as the default one in its panel
+// ----------------------------------------------------------------------------
- SendMessage((HWND)GetHWND(), BM_SETSTYLE, BS_DEFPUSHBUTTON, 1L);
+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);
+ }
+
+ // this doesn't work with bitmap buttons because it also removes the
+ // "ownerdrawn" style...
+ if ( btnOldDefault && !wxDynamicCast(btnOldDefault, wxBitmapButton) )
+ {
+ // remove the BS_DEFPUSHBUTTON style from the other button
+ long style = GetWindowLong(GetHwndOf(btnOldDefault), GWL_STYLE);
+ style &= ~BS_DEFPUSHBUTTON;
+ SendMessage(GetHwndOf(btnOldDefault), BM_SETSTYLE, style, 1L);
+ }
+
+ // set this button as the default
+ long style = GetWindowLong(GetHwnd(), GWL_STYLE);
+ style |= BS_DEFPUSHBUTTON;
+ SendMessage(GetHwnd(), BM_SETSTYLE, style, 1L);
}
-wxString wxButton::GetLabel(void) const
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()
{
- GetWindowText((HWND) GetHWND(), wxBuffer, 300);
- return wxString(wxBuffer);
+ wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+ event.SetEventObject(this);
+
+ return ProcessCommand(event);
}
-void wxButton::SetLabel(const wxString& label)
+void wxButton::Command(wxCommandEvent & event)
{
- SetWindowText((HWND) GetHWND(), (const char *) label);
+ ProcessCommand(event);
}
-WXHBRUSH wxButton::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
+// ----------------------------------------------------------------------------
+// event/message handlers
+// ----------------------------------------------------------------------------
+
+bool wxButton::MSWCommand(WXUINT param, WXWORD id)
{
-/*
- WXHBRUSH hBrush = (WXHBRUSH) MSWDefWindowProc(message, wParam, lParam);
-// ::SetTextColor((HDC) pDC, GetSysColor(COLOR_BTNTEXT));
- ::SetTextColor((HDC) pDC, RGB(GetForegroundColour().Red(), GetForegroundColour().Green(),
- GetForegroundColour().Blue()));
-
- 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()));
-
- wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(GetBackgroundColour(), wxSOLID);
-
- // 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();
+ bool processed = FALSE;
+ switch ( param )
+ {
+ case 1: // means that the message came from an accelerator
+ case BN_CLICKED:
+ processed = SendClickEvent();
+ break;
+ }
+
+ return processed;
}
-void wxButton::Command (wxCommandEvent & event)
+WXHBRUSH wxButton::OnCtlColor(WXHDC pDC,
+ WXHWND pWnd,
+ WXUINT nCtlColor,
+ WXUINT message,
+ WXWPARAM wParam,
+ WXLPARAM lParam)
{
- ProcessCommand (event);
-}
+ const HDC& hdc = (HDC)pDC;
+ const wxColour& colBack = GetBackgroundColour();
+ ::SetBkColor(hdc, RGB(colBack.Red(), colBack.Green(), colBack.Blue()));
+ const wxColour& colFor = GetForegroundColour();
+ ::SetTextColor(hdc, RGB(colFor.Red(), colFor.Green(), colFor.Blue()));
+
+ ::SetBkMode(hdc, OPAQUE);
+
+ wxBrush *backgroundBrush = wxTheBrushList->FindOrCreateBrush(colBack,
+ wxSOLID);
+ backgroundBrush->RealizeResource();
+ return (WXHBRUSH)backgroundBrush->GetResourceHandle();
+}
+
+long wxButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+{
+ // make sure that we won't have BS_DEFPUSHBUTTON style any more if the
+ // focus is being transfered to another button with the same parent -
+ // otherwise, we could finish with 2 default buttons inside one panel
+ if ( (nMsg == WM_KILLFOCUS) &&
+ (GetWindowLong(GetHwnd(), GWL_STYLE) & BS_DEFPUSHBUTTON) )
+ {
+ wxWindow *parent = GetParent();
+ wxWindow *win = wxFindWinFromHandle((WXHWND)wParam);
+ if ( win && win->GetParent() == parent )
+ {
+ wxPanel *panel = wxDynamicCast(parent, wxPanel);
+ if ( panel )
+ {
+ panel->SetDefaultItem(this);
+ }
+ // else: I don't know what to do - we'll still have the problem
+ // with multiple default buttons in a dialog...
+ }
+ }
+
+ // let the base class do all real processing
+ return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+}
projects / wxWidgets.git / blobdiff