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wxWidgets/src/msw/statbox.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/msw/statbox.cpp
// Purpose: wxStaticBox
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// 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
#if wxUSE_STATBOX
#include "wx/statbox.h"
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/dcclient.h"
#include "wx/dcmemory.h"
#include "wx/image.h"
#endif
#include "wx/notebook.h"
#include "wx/sysopt.h"
#include "wx/msw/uxtheme.h"
#include "wx/msw/private.h"
#include "wx/msw/missing.h"
// the values coincide with those in tmschema.h
#define BP_GROUPBOX 4
#define GBS_NORMAL 1
#define TMT_FONT 210
// ----------------------------------------------------------------------------
// wxWin macros
// ----------------------------------------------------------------------------
#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxStaticBoxStyle )
wxBEGIN_FLAGS( wxStaticBoxStyle )
// new style border flags, we put them first to
// use them for streaming out
wxFLAGS_MEMBER(wxBORDER_SIMPLE)
wxFLAGS_MEMBER(wxBORDER_SUNKEN)
wxFLAGS_MEMBER(wxBORDER_DOUBLE)
wxFLAGS_MEMBER(wxBORDER_RAISED)
wxFLAGS_MEMBER(wxBORDER_STATIC)
wxFLAGS_MEMBER(wxBORDER_NONE)
// old style border flags
wxFLAGS_MEMBER(wxSIMPLE_BORDER)
wxFLAGS_MEMBER(wxSUNKEN_BORDER)
wxFLAGS_MEMBER(wxDOUBLE_BORDER)
wxFLAGS_MEMBER(wxRAISED_BORDER)
wxFLAGS_MEMBER(wxSTATIC_BORDER)
wxFLAGS_MEMBER(wxBORDER)
// standard window styles
wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
wxFLAGS_MEMBER(wxCLIP_CHILDREN)
wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
wxFLAGS_MEMBER(wxWANTS_CHARS)
wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
wxFLAGS_MEMBER(wxVSCROLL)
wxFLAGS_MEMBER(wxHSCROLL)
wxEND_FLAGS( wxStaticBoxStyle )
IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBox, wxControl,"wx/statbox.h")
wxBEGIN_PROPERTIES_TABLE(wxStaticBox)
wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
wxPROPERTY_FLAGS( WindowStyle , wxStaticBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
/*
TODO PROPERTIES :
label
*/
wxEND_PROPERTIES_TABLE()
wxBEGIN_HANDLERS_TABLE(wxStaticBox)
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_6( wxStaticBox , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
#else
IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
#endif
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxStaticBox
// ----------------------------------------------------------------------------
bool wxStaticBox::Create(wxWindow *parent,
wxWindowID id,
const wxString& label,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name)
{
if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
return false;
if ( !MSWCreateControl(wxT("BUTTON"), label, pos, size) )
return false;
// Always use LTR layout. Otherwise, the label would be mirrored.
SetLayoutDirection(wxLayout_LeftToRight);
#ifndef __WXWINCE__
if (!wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
Connect(wxEVT_PAINT, wxPaintEventHandler(wxStaticBox::OnPaint));
#endif // !__WXWINCE__
return true;
}
wxBorder wxStaticBox::GetDefaultBorder() const
{
return wxBORDER_NONE;
}
WXDWORD wxStaticBox::MSWGetStyle(long style, WXDWORD *exstyle) const
{
long styleWin = wxStaticBoxBase::MSWGetStyle(style, exstyle);
// no need for it anymore, must be removed for wxRadioBox child
// buttons to be able to repaint themselves
styleWin &= ~WS_CLIPCHILDREN;
if ( exstyle )
{
#ifndef __WXWINCE__
if (wxSystemOptions::IsFalse(wxT("msw.staticbox.optimized-paint")))
*exstyle = WS_EX_TRANSPARENT;
else
#endif
*exstyle = 0;
}
styleWin |= BS_GROUPBOX;
if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
{
// Make sure label is on the right
styleWin |= BS_RIGHT;
}
return styleWin;
}
wxSize wxStaticBox::DoGetBestSize() const
{
int cx, cy;
wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
int wBox;
GetTextExtent(GetLabelText(wxGetWindowText(m_hWnd)), &wBox, &cy);
wBox += 3*cx;
int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
wxSize best(wBox, hBox);
CacheBestSize(best);
return best;
}
void wxStaticBox::GetBordersForSizer(int *borderTop, int *borderOther) const
{
wxStaticBoxBase::GetBordersForSizer(borderTop, borderOther);
// need extra space, don't know how much but this seems to be enough
*borderTop += GetCharHeight()/3;
}
// all the hacks below are not necessary for WinCE
#ifndef __WXWINCE__
WXLRESULT wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
if ( nMsg == WM_NCHITTEST )
{
// This code breaks some other processing such as enter/leave tracking
// so it's off by default.
static int s_useHTClient = -1;
if (s_useHTClient == -1)
s_useHTClient = wxSystemOptions::GetOptionInt(wxT("msw.staticbox.htclient"));
if (s_useHTClient == 1)
{
int xPos = GET_X_LPARAM(lParam);
int yPos = GET_Y_LPARAM(lParam);
ScreenToClient(&xPos, &yPos);
// Make sure you can drag by the top of the groupbox, but let
// other (enclosed) controls get mouse events also
if ( yPos < 10 )
return (long)HTCLIENT;
}
}
if ( nMsg == WM_PRINTCLIENT )
{
// we have to process WM_PRINTCLIENT ourselves as otherwise child
// windows' background (eg buttons in radio box) would never be drawn
// unless we have a parent with non default background
// so check first if we have one
if ( !HandlePrintClient((WXHDC)wParam) )
{
// no, we don't, erase the background ourselves
// (don't use our own) - see PaintBackground for explanation
wxBrush brush(GetParent()->GetBackgroundColour());
wxFillRect(GetHwnd(), (HDC)wParam, GetHbrushOf(brush));
}
return 0;
}
return wxControl::MSWWindowProc(nMsg, wParam, lParam);
}
// ----------------------------------------------------------------------------
// static box drawing
// ----------------------------------------------------------------------------
/*
We draw the static box ourselves because it's the only way to prevent it
from flickering horribly on resize (because everything inside the box is
erased twice: once when the box itself is repainted and second time when
the control inside it is repainted) without using WS_EX_TRANSPARENT style as
we used to do and which resulted in other problems.
*/
// MSWGetRegionWithoutSelf helper: removes the given rectangle from region
static inline void
SubtractRectFromRgn(HRGN hrgn, int left, int top, int right, int bottom)
{
AutoHRGN hrgnRect(::CreateRectRgn(left, top, right, bottom));
if ( !hrgnRect )
{
wxLogLastError(_T("CreateRectRgn()"));
return;
}
::CombineRgn(hrgn, hrgn, hrgnRect, RGN_DIFF);
}
void wxStaticBox::MSWGetRegionWithoutSelf(WXHRGN hRgn, int w, int h)
{
HRGN hrgn = (HRGN)hRgn;
// remove the area occupied by the static box borders from the region
int borderTop, border;
GetBordersForSizer(&borderTop, &border);
// top
SubtractRectFromRgn(hrgn, 0, 0, w, borderTop);
// bottom
SubtractRectFromRgn(hrgn, 0, h - border, w, h);
// left
SubtractRectFromRgn(hrgn, 0, 0, border, h);
// right
SubtractRectFromRgn(hrgn, w - border, 0, w, h);
}
WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
{
RECT rc;
::GetWindowRect(GetHwnd(), &rc);
HRGN hrgn = ::CreateRectRgn(rc.left, rc.top, rc.right + 1, rc.bottom + 1);
bool foundThis = false;
// iterate over all child windows (not just wxWindows but all windows)
for ( HWND child = ::GetWindow(GetHwndOf(GetParent()), GW_CHILD);
child;
child = ::GetWindow(child, GW_HWNDNEXT) )
{
if ( ! ::IsWindowVisible(child) )
{
// if the window isn't visible then it doesn't need clipped
continue;
}
LONG style = ::GetWindowLong(child, GWL_STYLE);
wxString str(wxGetWindowClass(child));
str.UpperCase();
if ( str == wxT("BUTTON") && (style & BS_GROUPBOX) == BS_GROUPBOX )
{
if ( child == GetHwnd() )
foundThis = true;
// Any static boxes below this one in the Z-order can't be clipped
// since if we have the case where a static box with a low Z-order
// is nested inside another static box with a high Z-order then the
// nested static box would be painted over. Doing it this way
// unfortunately results in flicker if the Z-order of nested static
// boxes is not inside (lowest) to outside (highest) but at least
// they are still shown.
if ( foundThis )
continue;
}
::GetWindowRect(child, &rc);
if ( ::RectInRegion(hrgn, &rc) )
{
// need to remove WS_CLIPSIBLINGS from all sibling windows
// that are within this staticbox if set
if ( style & WS_CLIPSIBLINGS )
{
style &= ~WS_CLIPSIBLINGS;
::SetWindowLong(child, GWL_STYLE, style);
// MSDN: "If you have changed certain window data using
// SetWindowLong, you must call SetWindowPos to have the
// changes take effect."
::SetWindowPos(child, NULL, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
SWP_FRAMECHANGED);
}
AutoHRGN hrgnChild(::CreateRectRgnIndirect(&rc));
::CombineRgn(hrgn, hrgn, hrgnChild, RGN_DIFF);
}
}
return (WXHRGN)hrgn;
}
// helper for OnPaint(): really erase the background, i.e. do it even if we
// don't have any non default brush for doing it (DoEraseBackground() doesn't
// do anything in such case)
void wxStaticBox::PaintBackground(wxDC& dc, const RECT& rc)
{
// note that we do not use the box background colour here, it shouldn't
// apply to its interior for several reasons:
// 1. wxGTK doesn't do it
// 2. controls inside the box don't get correct bg colour because they
// are not our children so we'd have some really ugly colour mix if
// we did it
// 3. this is backwards compatible behaviour and some people rely on it,
// see http://groups.google.com/groups?selm=4252E932.3080801%40able.es
wxWindow *parent = GetParent();
HBRUSH hbr = (HBRUSH)parent->MSWGetBgBrush(dc.GetHDC(), GetHWND());
// if there is no special brush for painting this control, just use the
// solid background colour
wxBrush brush;
if ( !hbr )
{
brush = wxBrush(parent->GetBackgroundColour());
hbr = GetHbrushOf(brush);
}
::FillRect(GetHdcOf(dc), &rc, hbr);
}
void wxStaticBox::PaintForeground(wxDC& dc, const RECT& rc)
{
MSWDefWindowProc(WM_PAINT, (WPARAM)GetHdcOf(dc), 0);
// when using XP themes, neither setting the text colour nor transparent
// background mode doesn't change anything: the static box def window proc
// still draws the label in its own colours, so we need to redraw the text
// ourselves if we have a non default fg colour
if ( m_hasFgCol && wxUxThemeEngine::GetIfActive() )
{
// draw over the text in default colour in our colour
HDC hdc = GetHdcOf(dc);
::SetTextColor(hdc, GetForegroundColour().GetPixel());
const bool rtl = wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft;
if ( rtl )
::SetTextAlign(hdc, TA_RTLREADING | TA_RIGHT);
// Get dimensions of the label
const wxString label = GetLabel();
// choose the correct font
AutoHFONT font;
SelectInHDC selFont;
if ( m_hasFont )
{
selFont.Init(hdc, GetHfontOf(GetFont()));
}
else // no font set, use the one set by the theme
{
wxUxThemeHandle hTheme(this, L"BUTTON");
if ( hTheme )
{
// GetThemeFont() expects its parameter to be LOGFONTW and not
// LOGFONTA even in ANSI programs and will happily corrupt
// memory after the struct end if we pass a LOGFONTA (which is
// smaller) to it!
LOGFONTW lfw;
if ( wxUxThemeEngine::Get()->GetThemeFont
(
hTheme,
hdc,
BP_GROUPBOX,
GBS_NORMAL,
TMT_FONT,
(LOGFONT *)&lfw
) == S_OK )
{
#if wxUSE_UNICODE
// ok, no conversion necessary
const LOGFONT& lf = lfw;
#else // !wxUSE_UNICODE
// most of the fields are the same in LOGFONTA and LOGFONTW
LOGFONT lf;
memcpy(&lf, &lfw, sizeof(lf));
// but the face name must be converted
WideCharToMultiByte(CP_ACP, 0, lfw.lfFaceName, -1,
lf.lfFaceName, sizeof(lf.lfFaceName),
NULL, NULL);
#endif // wxUSE_UNICODE/!wxUSE_UNICODE
font.Init(lf);
if ( font )
selFont.Init(hdc, font);
}
}
}
// Get the font extent
int width, height;
dc.GetTextExtent(wxStripMenuCodes(label, wxStrip_Mnemonics),
&width, &height);
int x;
int y = height;
// first we need to correctly paint the background of the label
// as Windows ignores the brush offset when doing it
//
// FIXME: value of x is hardcoded as this is what it is on my system,
// no idea if it's true everywhere
RECT dimensions = {0, 0, 0, y};
if ( !rtl )
{
x = 9;
dimensions.left = x;
dimensions.right = x + width;
}
else
{
x = rc.right - 7;
dimensions.left = x - width;
dimensions.right = x;
}
// need to adjust the rectangle to cover all the label background
dimensions.left -= 2;
dimensions.right += 2;
dimensions.bottom += 2;
if ( UseBgCol() )
{
// our own background colour should be used for the background of
// the label: this is consistent with the behaviour under pre-XP
// systems (i.e. without visual themes) and generally makes sense
wxBrush brush = wxBrush(GetBackgroundColour());
::FillRect(GetHdcOf(dc), &dimensions, GetHbrushOf(brush));
}
else // paint parent background
{
PaintBackground(dc, dimensions);
}
// now draw the text
if ( !rtl )
{
RECT rc2 = { x, 0, x + width, y };
::DrawText(hdc, label.wx_str(), label.length(), &rc2,
DT_SINGLELINE | DT_VCENTER);
}
else // RTL
{
RECT rc2 = { x, 0, x - width, y };
::DrawText(hdc, label.wx_str(), label.length(), &rc2,
DT_SINGLELINE | DT_VCENTER | DT_RTLREADING);
}
}
}
void wxStaticBox::OnPaint(wxPaintEvent& WXUNUSED(event))
{
RECT rc;
::GetClientRect(GetHwnd(), &rc);
// draw the entire box in a memory DC
wxMemoryDC memdc;
wxBitmap bitmap(rc.right, rc.bottom);
memdc.SelectObject(bitmap);
PaintBackground(memdc, rc);
PaintForeground(memdc, rc);
// now only blit the static box border itself, not the interior, to avoid
// flicker when background is drawn below
//
// note that it seems to be faster to do 4 small blits here and then paint
// directly into wxPaintDC than painting background in wxMemoryDC and then
// blitting everything at once to wxPaintDC, this is why we do it like this
wxPaintDC dc(this);
int borderTop, border;
GetBordersForSizer(&borderTop, &border);
// top
dc.Blit(border, 0, rc.right - border, borderTop,
&memdc, border, 0);
// bottom
dc.Blit(border, rc.bottom - border, rc.right - border, rc.bottom,
&memdc, border, rc.bottom - border);
// left
dc.Blit(0, 0, border, rc.bottom,
&memdc, 0, 0);
// right
dc.Blit(rc.right - border, 0, rc.right, rc.bottom,
&memdc, rc.right - border, 0);
// create the region excluding box children
AutoHRGN hrgn((HRGN)MSWGetRegionWithoutChildren());
RECT rcWin;
::GetWindowRect(GetHwnd(), &rcWin);
::OffsetRgn(hrgn, -rcWin.left, -rcWin.top);
// and also the box itself
MSWGetRegionWithoutSelf((WXHRGN) hrgn, rc.right, rc.bottom);
HDCClipper clipToBg(GetHdcOf(dc), hrgn);
// paint the inside of the box (excluding box itself and child controls)
PaintBackground(dc, rc);
}
#endif // !__WXWINCE__
#endif // wxUSE_STATBOX
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