src/BeOS/video_beos.cpp

/*
 *  video_beos.cpp - Video/graphics emulation, BeOS specific stuff
 *
 *  Basilisk II (C) 1997-2001 Christian Bauer
 *  Portions (C) 1997-1999 Marc Hellwig
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <AppKit.h>
#include <InterfaceKit.h>
#include <GameKit.h>

#include <stdio.h>
#include <string.h>

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "main.h"
#include "macos_util.h"
#include "prefs.h"
#include "adb.h"
#include "prefs.h"
#include "user_strings.h"
#include "about_window.h"
#include "video.h"

#include "m68k.h"
#include "memory.h"
#include "readcpu.h"
#include "newcpu.h"

#define DEBUG 0
#include "debug.h"

#define DEBUGGER_AVAILABLE 0


// Messages
const uint32 MSG_REDRAW = 'draw';
const uint32 MSG_ABOUT_REQUESTED = B_ABOUT_REQUESTED;
const uint32 MSG_REF_5HZ = ' 5Hz';
const uint32 MSG_REF_7_5HZ = ' 7Hz';
const uint32 MSG_REF_10HZ = '10Hz';
const uint32 MSG_REF_15HZ = '15Hz';
const uint32 MSG_REF_30HZ = '30Hz';
const uint32 MSG_REF_60HZ = '60Hz';
const uint32 MSG_MOUNT = 'moun';
const uint32 MSG_DEBUGGER = 'dbug';

// Display types
enum {
        DISPLAY_WINDOW,
        DISPLAY_SCREEN
};

// From sys_beos.cpp
extern void SysCreateVolumeMenu(BMenu *menu, uint32 msg);
extern void SysMountVolume(const char *name);


/*
 *  A simple view class for blitting a bitmap on the screen
 */

class BitmapView : public BView {
public:
        BitmapView(BRect frame, BBitmap *bitmap) : BView(frame, "bitmap", B_FOLLOW_NONE, B_WILL_DRAW)
        {
                the_bitmap = bitmap;
        }
        virtual void Draw(BRect update)
        {
                DrawBitmap(the_bitmap, update, update);
        }
        virtual void MouseMoved(BPoint point, uint32 transit, const BMessage *message);

private:
        BBitmap *the_bitmap;
};


/*
 *  Window class
 */

class MacWindow : public BDirectWindow {
public:
        MacWindow(BRect frame);
        virtual ~MacWindow();
        virtual void MessageReceived(BMessage *msg);
        virtual void DirectConnected(direct_buffer_info *info);
        virtual void WindowActivated(bool active);

        int32 frame_skip;
        bool mouse_in_view;                     // Flag: Mouse pointer within bitmap view
        uint8 remap_mac_be[256];        // For remapping of Mac colors to Be colors

private:
        static status_t tick_func(void *arg);

        thread_id tick_thread;
        bool tick_thread_active;        // Flag for quitting the tick thread

        BitmapView *main_view;          // Main view for bitmap drawing
        BBitmap *the_bitmap;            // Mac screen bitmap
        uint8 *the_buffer;                      // Mac frame buffer

        uint32 old_scroll_lock_state;

        bool supports_direct_mode;      // Flag: Direct frame buffer access supported
        sem_id drawing_sem;

        void *bits;
        int32 bytes_per_row;
        color_space pixel_format;
        bool unclipped;
};


/*
 *  Screen class
 */

class MacScreen : public BWindowScreen {
public:
        MacScreen(const char *name, int mode_bit, status_t *error);
        virtual ~MacScreen();
        virtual void Quit(void);
        virtual void ScreenConnected(bool active);

        rgb_color palette[256];         // Color palette, 256 entries
        bool palette_changed;

private:
        static status_t tick_func(void *arg);

        thread_id tick_thread;
        bool tick_thread_active;        // Flag for quitting the tick thread

        BView *main_view;                       // Main view for GetMouse()
        uint8 *frame_backup;            // Frame buffer backup when switching from/to different workspace
        bool quitting;                          // Flag for ScreenConnected: We are quitting, don't pause emulator thread
        bool screen_active;
};


// Global variables
static int display_type = DISPLAY_WINDOW;       // See enum above
static MacWindow *the_window = NULL;            // Pointer to the window
static MacScreen *the_screen = NULL;            // Pointer to the screen
static sem_id mac_os_lock = -1;                         // This is used to stop the MacOS thread when the Basilisk workspace is switched out
static uint8 MacCursor[68] = {16, 1};           // Mac cursor image


/*
 *  Initialization
 */

bool VideoInit(bool classic)
{
        // Create semaphore
        mac_os_lock = create_sem(0, "MacOS Frame Buffer Lock");

        // Get screen mode from preferences
        const char *mode_str = PrefsFindString("screen");

        // Determine type and mode
        display_type = DISPLAY_WINDOW;
        int width = 512, height = 384;
        int scr_mode_bit = 0;
        if (mode_str) {
                if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
                        display_type = DISPLAY_WINDOW;
                else if (sscanf(mode_str, "scr/%d", &scr_mode_bit) == 1)
                        display_type = DISPLAY_SCREEN;
        }

        // Open display
        switch (display_type) {
                case DISPLAY_WINDOW:
                        the_window = new MacWindow(BRect(0, 0, width-1, height-1));
                        break;
                case DISPLAY_SCREEN: {
                        status_t screen_error;
                        the_screen = new MacScreen(GetString(STR_WINDOW_TITLE), scr_mode_bit & 0x1f, &screen_error);
                        if (screen_error != B_NO_ERROR) {
                                the_screen->PostMessage(B_QUIT_REQUESTED);
                                while (the_screen)
                                        snooze(200000);
                                ErrorAlert(GetString(STR_OPEN_SCREEN_ERR));
                                return false;
                        } else {
                                the_screen->Show();
                                acquire_sem(mac_os_lock);
                        }
                        break;
                }
        }
        return true;
}


/*
 *  Deinitialization
 */

void VideoExit(void)
{
        // Close display
        switch (display_type) {
                case DISPLAY_WINDOW:
                        if (the_window != NULL) {
                                the_window->PostMessage(B_QUIT_REQUESTED);
                                while (the_window)
                                        snooze(200000);
                        }
                        break;
                case DISPLAY_SCREEN:
                        if (the_screen != NULL) {
                                the_screen->PostMessage(B_QUIT_REQUESTED);
                                while (the_screen)
                                        snooze(200000);
                        }
                        break;
        }

        // Delete semaphore
        delete_sem(mac_os_lock);
}


/*
 *  Set palette
 */

void video_set_palette(uint8 *pal)
{
        switch (display_type) {
                case DISPLAY_WINDOW: {
                        BScreen screen(the_window);
                        for (int i=0; i<256; i++)
                                the_window->remap_mac_be[i] = screen.IndexForColor(pal[i*3], pal[i*3+1], pal[i*3+2]);
                        break;
                }
                case DISPLAY_SCREEN:
                        for (int i=0; i<256; i++) {
                                the_screen->palette[i].red = pal[i*3];
                                the_screen->palette[i].green = pal[i*3+1];
                                the_screen->palette[i].blue = pal[i*3+2];
                        }
                        the_screen->palette_changed = true;
                        break;
        }
}


/*
 *  Close down full-screen mode (if bringing up error alerts is unsafe while in full-screen mode)
 */

void VideoQuitFullScreen(void)
{
        D(bug("VideoQuitFullScreen()\n"));
        if (display_type == DISPLAY_SCREEN) {
                if (the_screen != NULL) {
                        the_screen->PostMessage(B_QUIT_REQUESTED);
                        while (the_screen)
                                snooze(200000);
                }
        }
}


/*
 *  Video event handling (not neccessary under BeOS, handled by filter function)
 */

void VideoInterrupt(void)
{
        release_sem(mac_os_lock);
        while (acquire_sem(mac_os_lock) == B_INTERRUPTED) ;
}


/*
 *  Filter function for receiving mouse and keyboard events
 */

#define MENU_IS_POWER 0

// Be -> Mac raw keycode translation table
static const uint8 keycode2mac[0x80] = {
        0xff, 0x35, 0x7a, 0x78, 0x63, 0x76, 0x60, 0x61, // inv Esc  F1  F2  F3  F4  F5  F6
        0x62, 0x64, 0x65, 0x6d, 0x67, 0x6f, 0x69, 0x6b, //  F7  F8  F9 F10 F11 F12 F13 F14
        0x71, 0x0a, 0x12, 0x13, 0x14, 0x15, 0x17, 0x16, // F15   `   1   2   3   4   5   6
        0x1a, 0x1c, 0x19, 0x1d, 0x1b, 0x18, 0x33, 0x72, //   7   8   9   0   -   = BSP INS
        0x73, 0x74, 0x47, 0x4b, 0x43, 0x4e, 0x30, 0x0c, // HOM PUP NUM   /   *   - TAB   Q
        0x0d, 0x0e, 0x0f, 0x11, 0x10, 0x20, 0x22, 0x1f, //   W   E   R   T   Y   U   I   O
        0x23, 0x21, 0x1e, 0x2a, 0x75, 0x77, 0x79, 0x59, //   P   [   ]   \ DEL END PDN   7
        0x5b, 0x5c, 0x45, 0x39, 0x00, 0x01, 0x02, 0x03, //   8   9   + CAP   A   S   D   F
        0x05, 0x04, 0x26, 0x28, 0x25, 0x29, 0x27, 0x24, //   G   H   J   K   L   ;   ' RET
        0x56, 0x57, 0x58, 0x38, 0x06, 0x07, 0x08, 0x09, //   4   5   6 SHL   Z   X   C   V
        0x0b, 0x2d, 0x2e, 0x2b, 0x2f, 0x2c, 0x38, 0x3e, //   B   N   M   ,   .   / SHR CUP
        0x53, 0x54, 0x55, 0x4c, 0x36, 0x37, 0x31, 0x37, //   1   2   3 ENT CTL ALT SPC ALT
        0x36, 0x3b, 0x3d, 0x3c, 0x52, 0x41, 0x3a, 0x3a, // CTR CLF CDN CRT   0   . CMD CMD
#if MENU_IS_POWER
        0x7f, 0x32, 0x51, 0x7f, 0xff, 0xff, 0xff, 0xff, // MNU EUR   = POW inv inv inv inv
#else
        0x32, 0x32, 0x51, 0x7f, 0xff, 0xff, 0xff, 0xff, // MNU EUR   = POW inv inv inv inv
#endif
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  // inv inv inv inv inv inv inv inv
};

static const uint8 modifier2mac[0x20] = {
#if MENU_IS_POWER
        0x38, 0x37, 0x36, 0x39, 0x6b, 0x47, 0x3a, 0x7f, // SHF CMD inv CAP F14 NUM OPT MNU
#else
        0x38, 0x37, 0x36, 0x39, 0x6b, 0x47, 0x3a, 0x32, // SHF CMD CTR CAP F14 NUM OPT MNU
#endif
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  // inv inv inv inv inv inv inv inv
};

static filter_result filter_func(BMessage *msg, BHandler **target, BMessageFilter *filter)
{
        switch (msg->what) {
                case B_KEY_DOWN:
                case B_KEY_UP: {
                        uint32 be_code = msg->FindInt32("key") & 0xff;
                        uint32 mac_code = keycode2mac[be_code];

                        // Intercept Ctrl-F1 (mount floppy disk shortcut)
                        uint32 mods = msg->FindInt32("modifiers");
                        if (be_code == 0x02 && (mods & B_CONTROL_KEY))
                                SysMountVolume("/dev/disk/floppy/raw");

                        if (mac_code == 0xff)
                                return B_DISPATCH_MESSAGE;
                        if (msg->what == B_KEY_DOWN)
                                ADBKeyDown(mac_code);
                        else
                                ADBKeyUp(mac_code);
                        return B_SKIP_MESSAGE;
                }

                case B_MODIFIERS_CHANGED: {
                        uint32 mods = msg->FindInt32("modifiers");
                        uint32 old_mods = msg->FindInt32("be:old_modifiers");
                        uint32 changed = mods ^ old_mods;
                        uint32 mask = 1;
                        for (int i=0; i<32; i++, mask<<=1)
                                if (changed & mask) {
                                        uint32 mac_code = modifier2mac[i];
                                        if (mac_code == 0xff)
                                                continue;
                                        if (mods & mask)
                                                ADBKeyDown(mac_code);
                                        else
                                                ADBKeyUp(mac_code);
                                }
                        return B_SKIP_MESSAGE;
                }

                case B_MOUSE_MOVED: {
                        BPoint point;
                        msg->FindPoint("where", &point);
                        ADBMouseMoved(int(point.x), int(point.y));
                        return B_DISPATCH_MESSAGE;      // Otherwise BitmapView::MouseMoved() wouldn't be called
                }

                case B_MOUSE_DOWN: {
                        uint32 buttons = msg->FindInt32("buttons");
                        if (buttons & B_PRIMARY_MOUSE_BUTTON)
                                ADBMouseDown(0);
                        if (buttons & B_SECONDARY_MOUSE_BUTTON)
                                ADBMouseDown(1);
                        if (buttons & B_TERTIARY_MOUSE_BUTTON)
                                ADBMouseDown(2);
                        return B_SKIP_MESSAGE;
                }

                case B_MOUSE_UP:        // B_MOUSE_UP means "all buttons released"
                        ADBMouseUp(0);
                        ADBMouseUp(1);
                        ADBMouseUp(2);
                        return B_SKIP_MESSAGE;

                default:
                        return B_DISPATCH_MESSAGE;
        }
}


/*
 *  Window constructor
 */

MacWindow::MacWindow(BRect frame) : BDirectWindow(frame, GetString(STR_WINDOW_TITLE), B_TITLED_WINDOW, B_NOT_RESIZABLE | B_NOT_CLOSABLE | B_NOT_ZOOMABLE)
{
        supports_direct_mode = SupportsWindowMode();

        // Move window to right position
        Lock();
        MoveTo(80, 60);

        // Allocate bitmap and Mac frame buffer
        uint32 x = frame.IntegerWidth() + 1;
        uint32 y = frame.IntegerHeight() + 1;
        the_bitmap = new BBitmap(frame, B_COLOR_8_BIT);
        the_buffer = new uint8[x * (y + 2)];    // "y + 2" for safety

        // Set VideoMonitor
#if REAL_ADDRESSING
        VideoMonitor.mac_frame_base = (uint32)the_buffer;
#else
        VideoMonitor.mac_frame_base = MacFrameBaseMac;
#endif
        VideoMonitor.bytes_per_row = x;
        VideoMonitor.x = x;
        VideoMonitor.y = y;
        VideoMonitor.mode = VMODE_8BIT;

#if !REAL_ADDRESSING
        // Set variables for UAE memory mapping
        MacFrameBaseHost = the_buffer;
        MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y;
        MacFrameLayout = FLAYOUT_DIRECT;
#endif

        // Create bitmap view
        main_view = new BitmapView(frame, the_bitmap);
        AddChild(main_view);
        main_view->MakeFocus();

        // Read frame skip prefs
        frame_skip = PrefsFindInt32("frameskip");
        if (frame_skip == 0)
                frame_skip = 1;

        // Set up menus
        BRect bounds = Bounds();
        bounds.OffsetBy(0, bounds.IntegerHeight() + 1);
        BMenuItem *item;
        BMenuBar *bar = new BMenuBar(bounds, "menu");
        BMenu *menu = new BMenu(GetString(STR_WINDOW_MENU));
        menu->AddItem(new BMenuItem(GetString(STR_WINDOW_ITEM_ABOUT), new BMessage(MSG_ABOUT_REQUESTED)));
        menu->AddItem(new BSeparatorItem);
        BMenu *submenu = new BMenu(GetString(STR_WINDOW_ITEM_REFRESH));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_5HZ_LAB), new BMessage(MSG_REF_5HZ)));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_7_5HZ_LAB), new BMessage(MSG_REF_7_5HZ)));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_10HZ_LAB), new BMessage(MSG_REF_10HZ)));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_15HZ_LAB), new BMessage(MSG_REF_15HZ)));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_30HZ_LAB), new BMessage(MSG_REF_30HZ)));
        submenu->AddItem(new BMenuItem(GetString(STR_REF_60HZ_LAB), new BMessage(MSG_REF_60HZ)));
        submenu->SetRadioMode(true);
        if (frame_skip == 12) {
                if ((item = submenu->FindItem(GetString(STR_REF_5HZ_LAB))) != NULL)
                        item->SetMarked(true);
        } else if (frame_skip == 8) {
                if ((item = submenu->FindItem(GetString(STR_REF_7_5HZ_LAB))) != NULL)
                        item->SetMarked(true);
        } else if (frame_skip == 6) {
                if ((item = submenu->FindItem(GetString(STR_REF_10HZ_LAB))) != NULL)
                        item->SetMarked(true);
        } else if (frame_skip == 4) {
                if ((item = submenu->FindItem(GetString(STR_REF_15HZ_LAB))) != NULL)
                        item->SetMarked(true);
        } else if (frame_skip == 2) {
                if ((item = submenu->FindItem(GetString(STR_REF_30HZ_LAB))) != NULL)
                        item->SetMarked(true);
        } else if (frame_skip == 1) {
                if ((item = submenu->FindItem(GetString(STR_REF_60HZ_LAB))) != NULL)
                        item->SetMarked(true);
        }
        menu->AddItem(submenu);
        submenu = new BMenu(GetString(STR_WINDOW_ITEM_MOUNT));
        SysCreateVolumeMenu(submenu, MSG_MOUNT);
        menu->AddItem(submenu);
#if DEBUGGER_AVAILABLE
        menu->AddItem(new BMenuItem("Debugger", new BMessage(MSG_DEBUGGER)));
#endif
        bar->AddItem(menu);
        AddChild(bar);
        SetKeyMenuBar(bar);
        int mbar_height = bar->Frame().IntegerHeight() + 1;

        // Resize window to fit menu bar
        ResizeBy(0, mbar_height);

        // Set absolute mouse mode and get scroll lock state
        ADBSetRelMouseMode(false);
        mouse_in_view = true;
        old_scroll_lock_state = modifiers() & B_SCROLL_LOCK;
        if (old_scroll_lock_state)
                SetTitle(GetString(STR_WINDOW_TITLE_FROZEN));
        else
                SetTitle(GetString(STR_WINDOW_TITLE));

        // Keep window aligned to 8-byte frame buffer boundaries for faster blitting
        SetWindowAlignment(B_BYTE_ALIGNMENT, 8);

        // Create drawing semaphore (for direct mode)
        drawing_sem = create_sem(0, "direct frame buffer access");

        // Start 60Hz interrupt
        tick_thread_active = true;
        tick_thread = spawn_thread(tick_func, "Window Redraw", B_DISPLAY_PRIORITY, this);
        resume_thread(tick_thread);

        // Add filter for keyboard and mouse events
        BMessageFilter *filter = new BMessageFilter(B_ANY_DELIVERY, B_ANY_SOURCE, filter_func);
        main_view->AddFilter(filter);

        // Show window
        Unlock();
        Show();
        Sync();
}


/*
 *  Window destructor
 */

MacWindow::~MacWindow()
{
        // Restore cursor
        mouse_in_view = false;
        be_app->SetCursor(B_HAND_CURSOR);

        // Hide window
        Hide();
        Sync();

        // Stop 60Hz interrupt
        status_t l;
        tick_thread_active = false;
        delete_sem(drawing_sem);
        wait_for_thread(tick_thread, &l);

        // Free bitmap and frame buffer
        delete the_bitmap;
        delete[] the_buffer;

        // Tell emulator that we're done
        the_window = NULL;
}


/*
 *  Window connected/disconnected
 */

void MacWindow::DirectConnected(direct_buffer_info *info)
{
        switch (info->buffer_state & B_DIRECT_MODE_MASK) {
                case B_DIRECT_STOP:
                        acquire_sem(drawing_sem);
                        break;
                case B_DIRECT_MODIFY:
                        acquire_sem(drawing_sem);
                case B_DIRECT_START:
                        bits = (void *)((uint8 *)info->bits + info->window_bounds.top * info->bytes_per_row + info->window_bounds.left * info->bits_per_pixel / 8);
                        bytes_per_row = info->bytes_per_row;
                        pixel_format = info->pixel_format;
                        unclipped = false;
                        if (info->clip_list_count == 1)
                                if (memcmp(&info->clip_bounds, &info->window_bounds, sizeof(clipping_rect)) == 0)
                                        unclipped = true;
                        release_sem(drawing_sem);
                        break;
        }
}


/*
 *  Handle redraw and menu messages
 */

void MacWindow::MessageReceived(BMessage *msg)
{
        BMessage *msg2;

        switch (msg->what) {
                case MSG_REDRAW: {

                        // Prevent backlog of messages
                        MessageQueue()->Lock();
                        while ((msg2 = MessageQueue()->FindMessage(MSG_REDRAW, 0)) != NULL) {
                                MessageQueue()->RemoveMessage(msg2);
                                delete msg2;
                        }
                        MessageQueue()->Unlock();
                        
                        // Convert Mac screen buffer to BeOS palette and blit
                        uint8 *source = the_buffer - 1;
                        uint8 *dest = (uint8 *)the_bitmap->Bits() - 1;
                        uint32 length = VideoMonitor.bytes_per_row * VideoMonitor.y;
                        for (int i=0; i<length; i++)
                                *++dest = remap_mac_be[*++source];
                        BRect update_rect = BRect(0, 0, VideoMonitor.x-1, VideoMonitor.y-1);
                        main_view->DrawBitmapAsync(the_bitmap, update_rect, update_rect);
                        break;
                }

                case MSG_ABOUT_REQUESTED: {
                        ShowAboutWindow();
                        break;
                }

                case MSG_REF_5HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 12);
                        break;

                case MSG_REF_7_5HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 8);
                        break;

                case MSG_REF_10HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 6);
                        break;

                case MSG_REF_15HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 4);
                        break;

                case MSG_REF_30HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 2);
                        break;

                case MSG_REF_60HZ:
                        PrefsReplaceInt32("frameskip", frame_skip = 1);
                        break;

                case MSG_MOUNT: {
                        BMenuItem *source = NULL;
                        msg->FindPointer("source", (void **)&source);
                        if (source)
                                SysMountVolume(source->Label());
                        break;
                }

#if DEBUGGER_AVAILABLE
                case MSG_DEBUGGER:
                        extern int debugging;
                        debugging = 1;
                        regs.spcflags |= SPCFLAG_BRK;
                        break;
#endif

                default:
                        BDirectWindow::MessageReceived(msg);
        }
}


/*
 *  Window activated/deactivated
 */

void MacWindow::WindowActivated(bool active)
{
        if (active) {
                frame_skip = PrefsFindInt32("frameskip");
                if (frame_skip == 0)
                        frame_skip = 1;
        } else
                frame_skip = 12;        // 5Hz in background
}


/*
 *  60Hz interrupt routine
 */

status_t MacWindow::tick_func(void *arg)
{
        MacWindow *obj = (MacWindow *)arg;
        static int tick_counter = 0;
        while (obj->tick_thread_active) {

                tick_counter++;
                if (tick_counter >= obj->frame_skip) {
                        tick_counter = 0;

                        // Window title is determined by Scroll Lock state
                        uint32 scroll_lock_state = modifiers() & B_SCROLL_LOCK;
                        if (scroll_lock_state != obj->old_scroll_lock_state) {
                                if (scroll_lock_state)
                                        obj->SetTitle(GetString(STR_WINDOW_TITLE_FROZEN));
                                else
                                        obj->SetTitle(GetString(STR_WINDOW_TITLE));
                                obj->old_scroll_lock_state = scroll_lock_state;
                        }

                        // Has the Mac started?
                        if (HasMacStarted()) {

                                // Yes, set new cursor image if it was changed
                                if (memcmp(MacCursor+4, Mac2HostAddr(0x844), 64)) {
                                        Mac2Host_memcpy(MacCursor+4, 0x844, 64);        // Cursor image
                                        MacCursor[2] = ReadMacInt8(0x885);                      // Hotspot
                                        MacCursor[3] = ReadMacInt8(0x887);
                                        be_app->SetCursor(MacCursor);
                                }
                        }

                        // Refresh screen unless Scroll Lock is down
                        if (!scroll_lock_state) {

                                // If direct frame buffer access is supported and the content area is completely visible,
                                // convert the Mac screen buffer directly. Otherwise, send a message to the window to do
                                // it into a bitmap
                                if (obj->supports_direct_mode) {
                                        if (acquire_sem(obj->drawing_sem) != B_NO_ERROR)
                                                return 0;
                                        if (obj->unclipped && obj->pixel_format == B_CMAP8) {
                                                uint8 *source = obj->the_buffer - 1;
                                                uint8 *dest = (uint8 *)obj->bits;
                                                uint32 bytes_per_row = obj->bytes_per_row;
                                                int xsize = VideoMonitor.x;
                                                int ysize = VideoMonitor.y;
                                                for (int y=0; y<ysize; y++) {
                                                        uint32 *p = (uint32 *)dest - 1;
                                                        for (int x=0; x<xsize/4; x++) {
#if B_HOST_IS_BENDIAN
                                                                uint32 c = obj->remap_mac_be[*++source] << 24;
                                                                c |= obj->remap_mac_be[*++source] << 16;
                                                                c |= obj->remap_mac_be[*++source] << 8;
                                                                c |= obj->remap_mac_be[*++source];
#else
                                                                uint32 c = obj->remap_mac_be[*++source];
                                                                c |= obj->remap_mac_be[*++source] << 8;
                                                                c |= obj->remap_mac_be[*++source] << 16;
                                                                c |= obj->remap_mac_be[*++source] << 24;
#endif
                                                                *++p = c;
                                                        }
                                                        dest += bytes_per_row;
                                                }
                                        } else
                                                obj->PostMessage(MSG_REDRAW);
                                        release_sem(obj->drawing_sem);
                                } else
                                        obj->PostMessage(MSG_REDRAW);
                        }
                }
                snooze(16666);
        }
        return 0;
}


/*
 *  Mouse moved in window
 */

void BitmapView::MouseMoved(BPoint point, uint32 transit, const BMessage *message)
{
        switch (transit) {
                case B_ENTERED_VIEW:
                        ((MacWindow *)Window())->mouse_in_view = true;
                        be_app->SetCursor(MacCursor);
                        break;
                case B_EXITED_VIEW:
                        ((MacWindow *)Window())->mouse_in_view = false;
                        be_app->SetCursor(B_HAND_CURSOR);
                        break;
        }
}


/*
 *  Screen constructor
 */

MacScreen::MacScreen(const char *name, int mode_bit, status_t *error) : BWindowScreen(name, 1 << mode_bit, error), tick_thread(-1)
{
        // Set all variables
        frame_backup = NULL;
        palette_changed = false;
        screen_active = false;
        quitting = false;

        // Set relative mouse mode
        ADBSetRelMouseMode(true);

        // Create view to get mouse events
        main_view = new BView(Frame(), NULL, B_FOLLOW_NONE, 0);
        AddChild(main_view);

        // Start 60Hz interrupt
        tick_thread_active = true;
        tick_thread = spawn_thread(tick_func, "Polling sucks...", B_DISPLAY_PRIORITY, this);
        resume_thread(tick_thread);

        // Add filter for keyboard and mouse events
        BMessageFilter *filter = new BMessageFilter(B_ANY_DELIVERY, B_ANY_SOURCE, filter_func);
        AddCommonFilter(filter);
}


/*
 *  Screen destructor
 */

MacScreen::~MacScreen()
{
        // Stop 60Hz interrupt
        if (tick_thread > 0) {
                status_t l;
                tick_thread_active = false;
                wait_for_thread(tick_thread, &l);
        }

        // Tell emulator that we're done
        the_screen = NULL;
}


/*
 *  Screen closed
 */

void MacScreen::Quit(void)
{
        // Tell ScreenConnected() that we are quitting
        quitting = true;
        BWindowScreen::Quit();
}


/*
 *  Screen connected/disconnected
 */

void MacScreen::ScreenConnected(bool active)
{
        graphics_card_info *info = CardInfo();
        screen_active = active;

        if (active == true) {

                // Set VideoMonitor
#if REAL_ADDRESSING
                VideoMonitor.mac_frame_base = (uint32)info->frame_buffer;
#else
                VideoMonitor.mac_frame_base = MacFrameBaseMac;
#endif
                VideoMonitor.bytes_per_row = info->bytes_per_row;
                VideoMonitor.x = info->width;
                VideoMonitor.y = info->height;
                switch (info->bits_per_pixel) {
                        case 8:
                                VideoMonitor.mode = VMODE_8BIT;
                                break;
                        case 15:
                        case 16:
                                VideoMonitor.mode = VMODE_16BIT;
                                break;
                        case 32:
                                VideoMonitor.mode = VMODE_32BIT;
                                break;
                        default:
                                VideoMonitor.mode = VMODE_8BIT;
                                break;
                }

#if !REAL_ADDRESSING
                // Set variables for UAE memory mapping
                MacFrameBaseHost = (uint8 *)info->frame_buffer;
                MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y;
                switch (info->bits_per_pixel) {
                        case 15:
                                MacFrameLayout = FLAYOUT_HOST_555;
                                break;
                        case 16:
                                MacFrameLayout = FLAYOUT_HOST_565;
                                break;
                        case 32:
                                MacFrameLayout = FLAYOUT_HOST_888;
                                break;
                        default:
                                MacFrameLayout = FLAYOUT_DIRECT;
                                break;
                }
#endif

                // Copy from backup store to frame buffer
                if (frame_backup != NULL) {
                        memcpy(info->frame_buffer, frame_backup, VideoMonitor.bytes_per_row * VideoMonitor.y);
                        delete[] frame_backup;                  
                        frame_backup = NULL;
                }

                // Restore palette
                if (VideoMonitor.mode == VMODE_8BIT)
                        SetColorList(palette);

                // Restart/signal emulator thread
                release_sem(mac_os_lock);

        } else {

                if (!quitting) {

                        // Stop emulator thread
                        acquire_sem(mac_os_lock);

                        // Create backup store and save frame buffer
                        frame_backup = new uint8[VideoMonitor.bytes_per_row * VideoMonitor.y];
                        memcpy(frame_backup, info->frame_buffer, VideoMonitor.bytes_per_row * VideoMonitor.y);
                }
        }
}


/*
 *  Screen 60Hz interrupt routine
 */

status_t MacScreen::tick_func(void *arg)
{
        MacScreen *obj = (MacScreen *)arg;
        while (obj->tick_thread_active) {

                // Wait
                snooze(16667);

                // Workspace activated? Then poll the mouse and set the palette if needed
                if (!obj->quitting && obj->LockWithTimeout(200000) == B_OK) {
                        if (obj->screen_active) {
                                BPoint pt;
                                uint32 button = 0;
                                if (obj->palette_changed) {
                                        obj->palette_changed = false;
                                        obj->SetColorList(obj->palette);
                                }
                                obj->main_view->GetMouse(&pt, &button);
                                set_mouse_position(320, 240);
                                ADBMouseMoved(int(pt.x) - 320, int(pt.y) - 240);
                                if (button & B_PRIMARY_MOUSE_BUTTON)
                                        ADBMouseDown(0);
                                if (!(button & B_PRIMARY_MOUSE_BUTTON))
                                        ADBMouseUp(0);
                                if (button & B_SECONDARY_MOUSE_BUTTON)
                                        ADBMouseDown(1);
                                if (!(button & B_SECONDARY_MOUSE_BUTTON))
                                        ADBMouseUp(1);
                                if (button & B_TERTIARY_MOUSE_BUTTON)
                                        ADBMouseDown(2);
                                if (!(button & B_TERTIARY_MOUSE_BUTTON))
                                        ADBMouseUp(2);
                        }
                        obj->Unlock();
                }
        }
        return 0;
}
Revision:	1.7
Committed:	2001-05-26T12:31:00Z (23 years ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-29052001, release-0_9-1
Changes since 1.6:	+2 -7 lines
Log Message:	"About" window looks nicer