sdl_quartzvideo.m

SDL库 在进行视频显示程序spcaview安装时必须的库文件

                        shadowSide = 18;
                        shadowTop = 4;
                        shadowBottom = 22;
                    }
                    else if (winLevel == kCGSWindowLevelUtility) {

                        shadowSide = 8;
                        shadowTop = 4;
                        shadowBottom = 12;
                    }
                    else if (winLevel == kCGSWindowLevelNormal) {

                        /* 
                            These numbers are for foreground windows,
                            they are too big (but will work) for background windows 
                        */
                        shadowSide = 20;
                        shadowTop = 10;
                        shadowBottom = 24;
                    }
                    else if (winLevel == kCGSWindowLevelDock) {

                        /* Create dock icon cache */
                        if (numCachedDockIcons != (i-firstDockIcon) ||
                            dockIconCacheMiss) {

                            numCachedDockIcons = i - firstDockIcon;
                            SDL_memcpy (dockIcons, &(windows[firstDockIcon]),
                                    numCachedDockIcons * sizeof(*windows));
                        }

                        /* no shadow */
                        shadowSide = 0;
                        shadowTop = 0;
                        shadowBottom = 0;
                    }
                    else {

                        /*
                            kCGSWindowLevelDockLabel,
                            kCGSWindowLevelDock,
                            kOther???
                        */

                        /* no shadow */
                        shadowSide = 0;
                        shadowTop = 0;
                        shadowBottom = 0;
                    }

                    CGSGetScreenRectForWindow (cgsConnection, windows[i], &winRect);

                    winRect.origin.x -= shadowSide;
                    winRect.origin.y -= shadowTop;
                    winRect.size.width += shadowSide;
                    winRect.size.height += shadowBottom;

                    if (NSIntersectsRect (contentRect, winRect)) {

                        obscured = SDL_TRUE;
                        break;
                    }

                } /* window was not our window */

            } /* iterate over windows */

        } /* get cgsConnection */

    } /* window is visible */
    
    return obscured;
#else
    return SDL_TRUE;
#endif
}


/* Locking functions for the software window buffer */
static int QZ_LockWindow (_THIS, SDL_Surface *surface) {
    
    return LockPortBits ( [ window_view qdPort ] );
}

static void QZ_UnlockWindow (_THIS, SDL_Surface *surface) {

    UnlockPortBits ( [ window_view qdPort ] );
}

/* Resize icon, BMP format */
static const unsigned char QZ_ResizeIcon[] = {
    0x42,0x4d,0x31,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x36,0x00,0x00,0x00,0x28,0x00,
    0x00,0x00,0x0d,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x01,0x00,0x18,0x00,0x00,0x00,
    0x00,0x00,0xfb,0x01,0x00,0x00,0x13,0x0b,0x00,0x00,0x13,0x0b,0x00,0x00,0x00,0x00,
    0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,0xda,0xda,
    0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xe8,
    0xe8,0xe8,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xda,0xda,0xda,0x87,
    0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xe8,0xe8,
    0xe8,0xff,0xff,0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xd5,0xd5,0xd5,0x87,0x87,0x87,0xe8,0xe8,0xe8,
    0xff,0xff,0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,
    0xda,0xda,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xd7,0xd7,0xd7,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,0xda,
    0xda,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xd7,0xd7,0xd7,
    0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xda,0xda,0xda,0x87,0x87,0x87,0xe8,
    0xe8,0xe8,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xd7,0xd7,0xd7,0x87,0x87,0x87,0xe8,0xe8,
    0xe8,0xff,0xff,0xff,0xdc,0xdc,0xdc,0x87,0x87,0x87,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xd9,0xd9,0xd9,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xdc,
    0xdc,0xdc,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xdb,0xdb,
    0xdb,0x87,0x87,0x87,0xe8,0xe8,0xe8,0xff,0xff,0xff,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xdb,0xdb,0xdb,0x87,0x87,0x87,0xe8,
    0xe8,0xe8,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xdc,0xdc,0xdc,0x87,0x87,0x87,0xff,0xff,0xff,0x0b,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xdc,
    0xdc,0xdc,0xff,0xff,0xff,0x0b,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
    0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x0b
};

static void QZ_DrawResizeIcon (_THIS, RgnHandle dirtyRegion) {

    /* Check if we should draw the resize icon */
    if (SDL_VideoSurface->flags & SDL_RESIZABLE) {
    
        Rect    icon;
        SetRect (&icon, SDL_VideoSurface->w - 13, SDL_VideoSurface->h - 13, 
                    SDL_VideoSurface->w, SDL_VideoSurface->h);
                    
        if (RectInRgn (&icon, dirtyRegion)) {
        
            SDL_Rect icon_rect;
            
            /* Create the icon image */
            if (resize_icon == NULL) {
            
                SDL_RWops *rw;
                SDL_Surface *tmp;
                
                rw = SDL_RWFromConstMem (QZ_ResizeIcon, sizeof(QZ_ResizeIcon));
                tmp = SDL_LoadBMP_RW (rw, SDL_TRUE);
                                                                
                resize_icon = SDL_ConvertSurface (tmp, SDL_VideoSurface->format, SDL_SRCCOLORKEY);
                SDL_SetColorKey (resize_icon, SDL_SRCCOLORKEY, 0xFFFFFF);
                
                SDL_FreeSurface (tmp);
            }
            
            icon_rect.x = SDL_VideoSurface->w - 13;
            icon_rect.y = SDL_VideoSurface->h - 13;
            icon_rect.w = 13;
            icon_rect.h = 13;
            
            SDL_BlitSurface (resize_icon, NULL, SDL_VideoSurface, &icon_rect);
        }
    }
}

static void QZ_UpdateRects (_THIS, int numRects, SDL_Rect *rects) {

    if (SDL_VideoSurface->flags & SDL_OPENGLBLIT) {
        QZ_GL_SwapBuffers (this);
    }
    else if ( [ qz_window isMiniaturized ] ) {
    
        /* Do nothing if miniaturized */
    }
    
    else if ( ! QZ_IsWindowObscured (qz_window) ) {

        /* Use direct copy to flush contents to the display */
        CGrafPtr savePort;
        CGrafPtr dstPort, srcPort;
        const BitMap  *dstBits, *srcBits;
        Rect     dstRect, srcRect;
        Point    offset;
        int i;

        GetPort (&savePort);

        dstPort = CreateNewPortForCGDisplayID ((UInt32)display_id);
        srcPort = [ window_view qdPort ];

        offset.h = 0;
        offset.v = 0;
        SetPort (srcPort);
        LocalToGlobal (&offset);

        SetPort (dstPort);

        LockPortBits (dstPort);
        LockPortBits (srcPort);

        dstBits = GetPortBitMapForCopyBits (dstPort);
        srcBits = GetPortBitMapForCopyBits (srcPort);

        for (i = 0; i < numRects; i++) {

            SetRect (&srcRect, rects[i].x, rects[i].y,
                     rects[i].x + rects[i].w,
                     rects[i].y + rects[i].h);

            SetRect (&dstRect,
                     rects[i].x + offset.h,
                     rects[i].y + offset.v,
                     rects[i].x + rects[i].w + offset.h,
                     rects[i].y + rects[i].h + offset.v);

            CopyBits (srcBits, dstBits,
                      &srcRect, &dstRect, srcCopy, NULL);

        }

        SetPort (savePort);
    }
    else {
        /* Use QDFlushPortBuffer() to flush content to display */
        int i;
        RgnHandle dirty = NewRgn ();
        RgnHandle temp  = NewRgn ();

        SetEmptyRgn (dirty);

        /* Build the region of dirty rectangles */
        for (i = 0; i < numRects; i++) {

            MacSetRectRgn (temp, rects[i].x, rects[i].y,
                        rects[i].x + rects[i].w, rects[i].y + rects[i].h);
            MacUnionRgn (dirty, temp, dirty);
        }

        QZ_DrawResizeIcon (this, dirty);
        
        /* Flush the dirty region */
        QDFlushPortBuffer ( [ window_view qdPort ], dirty );
        DisposeRgn (dirty);
        DisposeRgn (temp);
    }
}

static void QZ_VideoQuit (_THIS) {

    CGDisplayFadeReservationToken fade_token = kCGDisplayFadeReservationInvalidToken;

    /* Restore gamma settings */
    CGDisplayRestoreColorSyncSettings ();

    /* Ensure the cursor will be visible and working when we quit */
    CGDisplayShowCursor (display_id);
    CGAssociateMouseAndMouseCursorPosition (1);
    
    if (mode_flags & SDL_FULLSCREEN) {
        /* Fade to black to hide resolution-switching flicker (and garbage
           that is displayed by a destroyed OpenGL context, if applicable) */
        if (CGAcquireDisplayFadeReservation (5, &fade_token) == kCGErrorSuccess) {
            CGDisplayFade (fade_token, 0.3, kCGDisplayBlendNormal, kCGDisplayBlendSolidColor, 0.0, 0.0, 0.0, TRUE);
        }
        QZ_UnsetVideoMode (this, TRUE);
        if (fade_token != kCGDisplayFadeReservationInvalidToken) {
            CGDisplayFade (fade_token, 0.5, kCGDisplayBlendSolidColor, kCGDisplayBlendNormal, 0.0, 0.0, 0.0, FALSE);
            CGReleaseDisplayFadeReservation (fade_token);
        }
    }
    else
        QZ_UnsetVideoMode (this, TRUE);
    
    CGPaletteRelease (palette);

    if (opengl_library) {
        SDL_UnloadObject(opengl_library);
        opengl_library = NULL;
    }
    this->gl_config.driver_loaded = 0;

    if (field_edit) {
        [field_edit release];
        field_edit = NULL;
    }
}

#if 0 /* Not used (apparently, it's really slow) */
static int  QZ_FillHWRect (_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) {

    CGSDisplayHWFill (display_id, rect->x, rect->y, rect->w, rect->h, color);

    return 0;
}
#endif

static int  QZ_LockHWSurface(_THIS, SDL_Surface *surface) {

    return 1;
}

static void QZ_UnlockHWSurface(_THIS, SDL_Surface *surface) {

}

static int QZ_AllocHWSurface(_THIS, SDL_Surface *surface) {
    return(-1); /* unallowed (no HWSURFACE support here). */
}

static void QZ_FreeHWSurface (_THIS, SDL_Surface *surface) {
}

/*
 int QZ_FlipHWSurface (_THIS, SDL_Surface *surface) {
     return 0;
 }
 */

/* Gamma functions */
int QZ_SetGamma (_THIS, float red, float green, float blue) {

    const CGGammaValue min = 0.0, max = 1.0;

    if (red == 0.0)
        red = FLT_MAX;
    else
        red = 1.0 / red;

    if (green == 0.0)
        green = FLT_MAX;
    else
        green = 1.0 / green;

    if (blue == 0.0)
        blue = FLT_MAX;
    else
        blue  = 1.0 / blue;

    if ( CGDisplayNoErr == CGSetDisplayTransferByFormula
         (display_id, min, max, red, min, max, green, min, max, blue) ) {

        return 0;
    }
    else {

        return -1;
    }
}

int QZ_GetGamma (_THIS, float *red, float *green, float *blue) {

    CGGammaValue dummy;
    if ( CGDisplayNoErr == CGGetDisplayTransferByFormula
         (display_id, &dummy, &dummy, red,
          &dummy, &dummy, green, &dummy, &dummy, blue) )

        return 0;
    else
        return -1;
}

int QZ_SetGammaRamp (_THIS, Uint16 *ramp) {

    const CGTableCount tableSize = 255;
    CGGammaValue redTable[tableSize];
    CGGammaValue greenTable[tableSize];
    CGGammaValue blueTable[tableSize];

    int i;

    /* Extract gamma values into separate tables, convert to floats between 0.0 and 1.0 */
    for (i = 0; i < 256; i++)
        redTable[i % 256] = ramp[i] / 65535.0;

    for (i=256; i < 512; i++)
        greenTable[i % 256] = ramp[i] / 65535.0;

    for (i=512; i < 768; i++)
        blueTable[i % 256] = ramp[i] / 65535.0;

    if ( CGDisplayNoErr == CGSetDisplayTransferByTable
         (display_id, tableSize, redTable, greenTable, blueTable) )
        return 0;
    else
        return -1;
}

int QZ_GetGammaRamp (_THIS, Uint16 *ramp) {

    const CGTableCount tableSize = 255;
    CGGammaValue redTable[tableSize];
    CGGammaValue greenTable[tableSize];
    CGGammaValue blueTable[tableSize];
    CGTableCount actual;
    int i;

    if ( CGDisplayNoErr != CGGetDisplayTransferByTable
         (display_id, tableSize, redTable, greenTable, blueTable, &actual) ||
         actual != tableSize)

        return -1;

    /* Pack tables into one array, with values from 0 to 65535 */
    for (i = 0; i < 256; i++)
        ramp[i] = redTable[i % 256] * 65535.0;

    for (i=256; i < 512; i++)
        ramp[i] = greenTable[i % 256] * 65535.0;

    for (i=512; i < 768; i++)
        ramp[i] = blueTable[i % 256] * 65535.0;

    return 0;
}