//--------------------------------------------------------------------------------------------------------------
//设置最大字符数量
void TextSurface::SetMaxChars( int nMaxChars )
{
free( mpText );
//分配内存
size_t nStrLen = sizeof(wchar_t) * ( nMaxChars + 1 );
size_t nDrawLen = sizeof(FontFace::GlyphDraw) * nMaxChars;
BYTE* pMem = (BYTE*)malloc( nStrLen + nDrawLen + sizeof(OverlayVertex)*6*nMaxChars );
//分配新字符串缓存
mMaxChars = nMaxChars;
mNumChars = 0;
mpText = (wchar_t*)pMem;
memset( mpText, 0, nStrLen + nDrawLen );
//分配字形数据缓存
mpGlyphDraw = (FontFace::GlyphDraw*)( pMem + nStrLen );
//分配顶点数据缓存
mpVertexData = (OverlayVertex*)( pMem + nStrLen + nDrawLen );
mpVertexPtr = mpVertexData;
//更新文字数据
_UpdateText();
}
void
StringEditor::AttachedToWindow()
{
fEditor.StartWatching(this);
_UpdateText();
}
void
NumberEditor::AttachedToWindow()
{
fTextControl->SetTarget(this);
fEditor.StartWatching(this);
_UpdateText();
}
//--------------------------------------------------------------------------------------------------------------
TextSurface::TextSurface( ZOrderType eZType, OverlaySurface* pZRefOverlay, FontFace* pFont, LPCWSTR szText,
int nX, int nY, int nLineWidth, int nMaxChars, DWORD dwColor, TextureFilterType eFilterType )
:OverlaySurface ( eZType, pZRefOverlay, eFilterType )
,mpFont (pFont)
, mpText (NULL)
, mNumChars (0)
, mX (nX)
, mY (nY)
, mLineWidth (nLineWidth)
, mTextColor (dwColor)
{
if( nX + mpFont->mnMaxWidth > nLineWidth )
Except( Exception::ERR_INVALIDPARAMS, "指定平面文字行宽度过小。" );
//计算字符串长度
int nNumChars = 0;
wchar_t* pChar = (wchar_t*)szText;
while( *pChar != 0 )
{
++pChar;
++nNumChars;
}
//如果未指定最大字符数量则使用当前字符串字符数量
if( nMaxChars == 0 )
mMaxChars = nNumChars;
else if( nMaxChars < nNumChars )
Except( Exception::ERR_INVALIDPARAMS, "指定的最大字符数量小于当前文字字符数量。" );
else
mMaxChars = nMaxChars;
mNumChars = nNumChars;
//分配内存
size_t nStrLen = sizeof(wchar_t) * ( mMaxChars + 1 );
size_t nDrawLen = sizeof(FontFace::GlyphDraw) * mMaxChars;
BYTE* pMem = (BYTE*)malloc( nStrLen + nDrawLen + sizeof(OverlayVertex)*6*mMaxChars );
//复制字符串
mpText = (wchar_t*)pMem;
memcpy( mpText, szText, sizeof(wchar_t) * ( mNumChars + 1 ) );
//分配字形数据缓存
mpGlyphDraw = (FontFace::GlyphDraw*)( pMem + nStrLen );
memset( mpGlyphDraw, 0, nDrawLen );
//分配顶点数据缓存
mpVertexData = (OverlayVertex*)( pMem + nStrLen + nDrawLen );
mpVertexPtr = mpVertexData;
mNumVertex = 0;
//更新文字数据
_UpdateText();
}
void
NumberEditor::MessageReceived(BMessage *message)
{
switch (message->what) {
case kMsgValueChanged:
CommitChanges();
break;
case kMsgDataEditorUpdate:
_UpdateText();
break;
default:
BView::MessageReceived(message);
}
}
void
MimeTypeEditor::MessageReceived(BMessage *message)
{
switch (message->what) {
case kMsgValueChanged:
fEditor.Replace(0, (const uint8 *)fTextControl->Text(),
strlen(fTextControl->Text()) + 1);
break;
case kMsgDataEditorUpdate:
_UpdateText();
break;
default:
BView::MessageReceived(message);
}
}
void
TextViewTest::MessageReceived(BMessage* message)
{
switch (message->what) {
case MSG_UPDATE_INSETS:
_UpdateInsets();
break;
case MSG_UPDATE_TEXT:
_UpdateText();
break;
case MSG_UPDATE_FONT:
_UpdateFont();
break;
default:
Test::MessageReceived(message);
break;
}
}
//--------------------------------------------------------------------------------------------------------------
//设置文字内容
void TextSurface::SetText( LPCWSTR szText )
{
//计算字符串长度
int mNumChars = 0;
wchar_t* pChar = (wchar_t*)szText;
while( *pChar != 0 )
{
++pChar;
++mNumChars;
}
if( mMaxChars < mNumChars )
Except( Exception::ERR_INVALIDPARAMS, "指定的文字字符数量超过了最大字符数量。" );
//复制字符串
memcpy( mpText, szText, sizeof(wchar_t) * ( mNumChars + 1 ) );
//重置字形数据缓存
memset( mpGlyphDraw, 0, sizeof(FontFace::GlyphDraw) * mMaxChars );
//更新文字数据
_UpdateText();
}
