snes9x_gui.cpp

著名SFC模拟器Snes9x的源代码。

#include "snes9x_gui.h"

#include "snes9x.h"
#include "memmap.h"
#include "display.h"
#include "soundux.h"
#include "cpuexec.h"

#include <qpixmap.h>
#include <qtoolbar.h>
#include <qtoolbutton.h>
#include <qpopupmenu.h>
#include <qmenubar.h>
#include <qkeycode.h>
#include <qfile.h>
#include <qfiledialog.h>
#include <qstatusbar.h>
#include <qmessagebox.h>
#include <qapplication.h>
#include <qaccel.h>
#include <qtextstream.h>
#include <qpainter.h>
#include <qpaintdevicemetrics.h>
#include <qwhatsthis.h>

#include "filesave.xpm"
#include "fileopen.xpm"
#include "fileprint.xpm"

const char * fileOpenText = "Click this button to open a new file.\n\n"
"You can also select the Open command from the File menu.";
const char * fileSaveText = "Click this button to save the file you are "
"editing.  You will be prompted for a file name.\n\n"
"You can also select the Save command from the File menu.\n\n"
"Note that implementing this function is left as an exercise for the reader.";
const char * filePrintText = "Click this button to print the file you "
"are editing.\n\n"
"You can also select the Print command from the File menu.";

Snes9xGUI::Snes9xGUI()
    : QMainWindow( 0, "example snes9x_gui main window" )
{
    QPixmap openIcon, saveIcon, printIcon;

    fileTools = new QToolBar( this, "file operations" );

    openIcon = QPixmap( fileopen );
    QToolButton * fileOpen = new QToolButton( openIcon, "Open File", 0,
					      this, SLOT(load()),
					      fileTools, "open file" );

    saveIcon = QPixmap( filesave );
    QToolButton * fileSave = new QToolButton( saveIcon, "Save File", 0,
					      this, SLOT(save()),
					      fileTools, "save file" );

    printIcon = QPixmap( fileprint );
    QToolButton * reset = new QToolButton( printIcon, "Reset", 0,
					       this, SLOT(reset ()),
					       fileTools, "reset" );

    (void)QWhatsThis::whatsThisButton( fileTools );
    QWhatsThis::add( fileOpen, fileOpenText, FALSE );
    QWhatsThis::add( fileSave, fileSaveText, FALSE );
    QWhatsThis::add( reset, filePrintText, FALSE );
    
    QPopupMenu * file = new QPopupMenu();
    menuBar()->insertItem( "&File", file );

    file->insertItem( "New", this, SLOT(newDoc()), CTRL+Key_N );
    file->insertItem( openIcon, "Open", this, SLOT(load()), CTRL+Key_O );
    file->insertItem( saveIcon, "Save", this, SLOT(save()), CTRL+Key_S );
    file->insertSeparator();
    file->insertItem( printIcon, "Reset", this, SLOT(reset()), CTRL+Key_R );
    file->insertSeparator();
    file->insertItem( "Close", this, SLOT(closeDoc()), CTRL+Key_W );
    file->insertItem( "Quit", qApp, SLOT(quit()), CTRL+Key_Q );

    controls = new QPopupMenu();
    menuBar()->insertItem( "&Controls", controls );

    mb = controls->insertItem( "Menu bar", this, SLOT(toggleMenuBar()), CTRL+Key_M);
    // Now an accelerator for when the menubar is invisible!
    QAccel* a = new QAccel(this);
    a->connectItem( a->insertItem( CTRL+Key_M ), this, SLOT(toggleMenuBar()) );

    tb = controls->insertItem( "Tool bar", this, SLOT(toggleToolBar()), CTRL+Key_T);
    sb = controls->insertItem( "Status bar", this, SLOT(toggleStatusBar()), CTRL+Key_B);
    controls->setCheckable( TRUE );
    controls->setItemChecked( mb, TRUE );
    controls->setItemChecked( tb, TRUE );
    controls->setItemChecked( sb, TRUE );

    fileOpen->setFocus();
    //setCentralWidget( e );
    statusBar()->message( "Ready", 2000 );
}


Snes9xGUI::~Snes9xGUI()
{
    // no explicit destruction is necessary in this example
}

void Snes9xGUI::newDoc()
{
    Snes9xGUI *ed = new Snes9xGUI;
    ed->resize( 400, 400 );
    ed->show();
}

void Snes9xGUI::load()
{
    S9xSetSoundMute (TRUE);
    char *filter = "*.[SsZzFf0-9Aa][MmIi4754][CcPpGg8]";
    QString fn = QFileDialog::getOpenFileName (S9xGetROMDirectory (),filter,this);
    if ( !fn.isEmpty() )
	load( fn );
    else
    {
	statusBar()->message( "Loading aborted", 2000 );
    }
    S9xSetSoundMute (FALSE);
}

void Snes9xGUI::load( const char *fileName )
{
    Memory.SaveSRAM (S9xGetSRAMFilename ());
    if (Memory.LoadROM (fileName))
    {
	setCaption( fileName );
	QString s;
	s.sprintf( "Loaded document %s", fileName );
	statusBar()->message( s, 2000 );
    }
}

void Snes9xGUI::save()
{
    statusBar()->message( "File->Save is not implemented" );
    QMessageBox::message( "Note", "Left as an exercise for the user." );
}

void Snes9xGUI::reset ()
{
    if (QMessageBox::information (statusBar(), "Snes9x: Reset Query",
				  "\
Are you sure you want to reset the game?\n\
(You will still be able to returned to the game's\n\
 last battery-RAM save position or your last\n\
 freeze position.", "Yes", "No") == 0)
    {
	S9xReset ();
    }
}

void Snes9xGUI::closeDoc()
{
    S9xExit ();
}

void Snes9xGUI::toggleMenuBar()
{
    if ( menuBar()->isVisible() ) {
	menuBar()->hide();
	controls->setItemChecked( mb, FALSE );
    } else {
	menuBar()->show();
	controls->setItemChecked( mb, TRUE );
    }
}

void Snes9xGUI::toggleToolBar()
{
    if ( fileTools->isVisible() ) {
	fileTools->hide();
	controls->setItemChecked( tb, FALSE );
    } else {
	fileTools->show();
	controls->setItemChecked( tb, TRUE );
    }
}

void Snes9xGUI::toggleStatusBar()
{
    if ( statusBar()->isVisible() ) {
	statusBar()->hide();
	controls->setItemChecked( sb, FALSE );
    } else {
	statusBar()->show();
	controls->setItemChecked( sb, TRUE );
    }
}