playlist.cpp

来自「VLC媒体播放程序」· C++ 代码 · 共 578 行 · 第 1/2 页

    if( !Visible )
        return;

    int xI, yI, wI, hI;
    // Slider Image
    Slider->Draw( x, y, w, h, dest );

    // TextZone
    if( GetIntersectRgn( x, y, w, h, TextLeft, TextTop, TextWidth, TextHeight,
                         xI, yI, wI, hI) )
    {
        // Change clipping region
        SkinRegion *destClipRgn = (SkinRegion *)new OSRegion( 0, 0, w, h );
        TextClipRgn->Move( TextLeft - x, TextTop - y );
        dest->SetClipRegion( TextClipRgn );

        // Draw each line
        DrawAllCase( dest, x, y, wI, hI );

        // Reset clipping region to old region
        dest->SetClipRegion( destClipRgn );
        delete destClipRgn;
        TextClipRgn->Move( x - TextLeft, y - TextTop );
    }
}
//---------------------------------------------------------------------------
void ControlPlayList::DrawAllCase( Graphics *dest, int x, int y, int w, int h )
{
    int i;
    for( i = 0; i < NumOfItems - StartIndex && i < Line * Column; i++ )
    {
        DrawCase( dest, i + StartIndex, x, y, w, h );
    }
}
//---------------------------------------------------------------------------
void ControlPlayList::DrawCase( Graphics *dest, int i, int x, int y, int w,
                                int h )
{
    // Test if case is in range
    int j = i - StartIndex;
    if( j < 0 || j >= Line * Column )
        return;

    // Draw background if selected
    if( Select[i] )
    {
        dest->DrawRect(
            CaseLeft[j] - x,
            TextTop + j * CaseHeight - y,
            CaseRight[j] - CaseLeft[j],
            CaseHeight,
            SelectColor
        );
    }

    // Choose font
    SkinFont *F;
    if( PlayList->i_index == i )
        F = PlayFont;
    else
        F = TextFont;

    // Print number
    sprintf( Num, "%i", i + 1 );
    F->Print( dest,
        Num,
        CaseTextLeft[j] - x, TextTop + j * CaseHeight - y,
        NumWidth - Margin, CaseHeight, VLC_FONT_ALIGN_RIGHT );

    // Print name
    F->Print( dest,
        GetFileName( i ),
        NumWidth + Margin + CaseTextLeft[j] - x,
        TextTop + j * CaseHeight - y,
        FileWidth - 2 * Margin, CaseHeight, VLC_FONT_ALIGN_LEFT );

    // Print info
    F->Print( dest,
        "no info",
        NumWidth + FileWidth + Margin + CaseTextLeft[j] - x,
        TextTop + j * CaseHeight - y,
        InfoWidth - Margin, CaseHeight, VLC_FONT_ALIGN_CENTER );
}
//---------------------------------------------------------------------------
char * ControlPlayList::GetFileName( int i )
{
    if( LongFileName )
    {
        return PlayList->pp_items[i]->psz_name;
    }
    else
    {
        string f = PlayList->pp_items[i]->psz_name;
        int pos  = f.rfind( DIRECTORY_SEPARATOR, f.size() );
        return PlayList->pp_items[i]->psz_name + pos + 1;
    }
}
//---------------------------------------------------------------------------
void ControlPlayList::MoveRelative( int xOff, int yOff )
{
    Slider->MoveRelative( xOff, yOff );
    Left     += xOff;
    Top      += yOff;
    TextLeft += xOff;
    TextTop  += yOff;
    for( int i = 1; i < Line; i++ )
    {
        CaseLeft[i]     += xOff;
        CaseTextLeft[i] += xOff;
        CaseRight[i]    += xOff;
    }
}
//---------------------------------------------------------------------------
double ControlPlayList::Dist( int x1, int y1, int x2, int y2 )
{
    return sqrt( (x1-x2)*(x1-x2) + (y1-y2)*(y1-y2) );
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseDown( int x, int y, int button )
{
    if( !Enabled )
        return false;

    // If hit into slider
    if( Slider->MouseDown( x, y, button ) )
    {
        int New = Slider->GetCursorPosition();
        if( New != StartIndex )
        {
            StartIndex = New;
            ParentWindow->Refresh( TextLeft,TextTop,TextWidth,TextHeight );
        }
        return true;
    }

    if( !TextClipRgn->Hit( x - TextLeft, y - TextTop ) )
        return false;

    // If hit in a case
    int i, j;
    for( i = 0; i < PlayList->i_size - StartIndex && i < Line * Column; i++)
    {
        if( x >= CaseLeft[i] && x <= CaseRight[i] && y >= TextTop +
            i * CaseHeight  && y < TextTop + (i + 1) * CaseHeight )
        {
            for( j = 0; j < NumOfItems; j++ )
            {
                if( button & KEY_CTRL )
                {
                    // CTRL is pressed
                    if( j == i + StartIndex )
                    {
                        Select[j] = !Select[j];
                    }
                }
                else
                { 
                    // CTRL is not pressed
                    Select[j] = ( j == i + StartIndex );
                }
            }
            RefreshAll();
            return true;
        }
    }

    return false;
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseUp( int x, int y, int button )
{
    if( !Enabled )
        return false;

    // If hit into slider
    if( Slider->MouseUp( x, y, button ) )
        return true;

    return false;
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseMove( int x, int y, int button )
{
    if( !Enabled || !button )
        return false;

    // If hit into slider
    if( Slider->MouseMove( x, y, button ) )
    {
        int New = Slider->GetCursorPosition();
        if( New != StartIndex )
        {
            StartIndex = New;
            RefreshAll();
        }
        return true;
    }

    return false;
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseScroll( int x, int y, int direction )
{
    if( !Enabled )
        return false;

    if( !TextClipRgn->Hit( x - Left, y - Top ) && !Slider->MouseOver( x, y ) )
        return false;

    long pos = StartIndex;
    switch( direction )
    {
        case MOUSE_SCROLL_UP:
            if( pos > 0 ) pos--;
            break;
        case MOUSE_SCROLL_DOWN:
            if( pos + Line  < NumOfItems ) pos++;
            break;
    }
    StartIndex = pos;
    Slider->SetCursorPosition( pos );
    RefreshAll();
    return true;
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseOver( int x, int y )
{
    if( TextClipRgn->Hit( x - Left, y - Top ) || Slider->MouseOver( x, y ) )
        return true;
    else
        return false;
}
//---------------------------------------------------------------------------
bool ControlPlayList::MouseDblClick( int x, int y, int button )
{
    if( !Enabled || button != 1 )
        return false;

    int i;

    if( !TextClipRgn->Hit( x - TextLeft, y - TextTop ) )
        return false;

    for( i = 0; i < PlayList->i_size - StartIndex && i < Line * Column; i++ )
    {
        if( x >= CaseLeft[i] && x <= CaseRight[i] && y >=
            TextTop + i * CaseHeight  && y < TextTop + (i + 1) * CaseHeight )
        {
            playlist_Goto( PlayList, i + StartIndex );
            OSAPI_PostMessage( NULL, VLC_INTF_REFRESH, 0, (int)false );
            return true;
        }
    }
    return false;
}
//---------------------------------------------------------------------------
bool ControlPlayList::ToolTipTest( int x, int y )
{
    if( !Enabled )
        return false;

    int i, w, h;
    for( i = 0; i < PlayList->i_size - StartIndex && i < Line * Column; i++ )
    {
        if( x >= CaseLeft[i] && x <= CaseRight[i] && y >=
            TextTop + i * CaseHeight  && y < TextTop + (i + 1) * CaseHeight )
        {
            TextFont->GetSize( PlayList->pp_items[i + StartIndex]->psz_name, w,
                               h );
            if( w > FileWidth )
            {
                ParentWindow->ChangeToolTipText(
                    (string)PlayList->pp_items[i + StartIndex]->psz_name );
                return true;
            }
        }
    }
    return false;
}
//---------------------------------------------------------------------------
void ControlPlayList::InitSliderCurve( double *ptx, double *pty, int nb,
                                       string scroll_up, string scroll_down )
{
    Slider = new ControlSlider( "none", true, "none", scroll_up, scroll_down,
        ptx, pty, nb, "none", "", ParentWindow );
}
//---------------------------------------------------------------------------