/*

    File:       GraphicImportDrawCode.c

    Description:Code that actually implements the drawing calls to the Graphic Importer

                components to draw many different image formats.

    Author:     MC

    Copyright:  © Copyright 1999-2000 Apple Computer, Inc. All rights reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

                ("Apple") in consideration of your agreement to the following terms, and your

                use, installation, modification or redistribution of this Apple software

                constitutes acceptance of these terms.  If you do not agree with these terms,

                please do not use, install, modify or redistribute this Apple software.

                In consideration of your agreement to abide by the following terms, and subject

                to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs

                copyrights in this original Apple software (the "Apple Software"), to use,

                reproduce, modify and redistribute the Apple Software, with or without

                modifications, in source and/or binary forms; provided that if you redistribute

                the Apple Software in its entirety and without modifications, you must retain

                this notice and the following text and disclaimers in all such redistributions of

                the Apple Software.  Neither the name, trademarks, service marks or logos of

                Apple Computer, Inc. may be used to endorse or promote products derived from the

                Apple Software without specific prior written permission from Apple.  Except as

                expressly stated in this notice, no other rights or licenses, express or implied,

                are granted by Apple herein, including but not limited to any patent rights that

                may be infringed by your derivative works or by other works in which the Apple

                Software may be incorporated.

                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

                COMBINATION WITH YOUR PRODUCTS.

                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

                CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

                GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Change History (most recent first):

*/

#define TARGET_API_MAC_CARBON 1

#include <Windows.h>

#include <Movies.h>

#include <QuickTimeComponents.h>

#include "GraphicImportDrawCode.h"

#include "WindowCode.h"

#include "LinkedList.h"

#include "Structs.h"

#include "Defines.h"

// Globals

extern  PreferencesHandle           gPreferences;

extern  long                        gNumGIComponents;

extern  OSType *                    gAcceptedFlavorTypes;

static void MaxWindowSize (WindowPtr theWindow, Rect * maxBounds) {

    WindowInfoHandle            winInfo;

    SInt8                       hState;

    Rect                        standard,

                                device,

                                global,

                                c,

                                s,

                                diffs;

    RgnHandle                   tempRgn;

    GDHandle                    theDevice;

    CGrafPtr                    wport;

    Point                       origin;

    if (theWindow != nil) {

        winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

    }

    if (winInfo != nil && (**winInfo).sig == kMySig) {

        hState = HGetState ((Handle)winInfo);

        HLock ((Handle)winInfo);

        // make the window's port the current port

        wport = GetWindowPort (theWindow);

        SetPort (wport);

        SetPt (&origin, 0, 0);

        LocalToGlobal (&origin);

        // find the window's global coordinates

        GetPortBounds (wport, &global);

        OffsetRect (&global, origin.h, origin.v);

        // get the maximum intersecting screen

        theDevice = GetMaxDevice (&global);

        device = (**theDevice).gdRect;

        // if it's the main screen, adjust it for the menu bar height

        if (theDevice == GetMainDevice ())

            device.top += GetMBarHeight ();

        // calculate the difference between the window's content rectangle and its frame

        tempRgn = NewRgn ();

        GetWindowRegion (theWindow, kWindowContentRgn, tempRgn);

        GetRegionBounds (tempRgn, &c);

        GetWindowRegion (theWindow, kWindowStructureRgn, tempRgn);

        GetRegionBounds (tempRgn, &s);

        DisposeRgn (tempRgn);

        SetRect (&diffs, (short)(c.left - s.left), (short)(c.top - s.top),

                (short)(s.right - c.right), (short)(s.bottom - c.bottom));

        // calculate the maximum bounds for the standard rectangle

        SetRect (&standard, (short)(device.left + diffs.left), (short)(device.top + diffs.top),

                (short)(device.right - diffs.right), (short)(device.bottom - diffs.bottom));

        // Move the origin back to 0,0

        OffsetRect (&standard, (short)-standard.left, (short)-standard.top);

        ScaleImageToRect (&(**winInfo).winNatGraphicBoundsRect, &standard, maxBounds);

        HSetState ((Handle)winInfo, hState);        

    }

}

static OSErr SizeGraphicWindow (WindowPtr theWindow) {

    ComponentResult             err;

    WindowInfoHandle            winInfo;

    SInt16                      w, h;

    if (theWindow != nil) {

        winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

    }

    if (winInfo != nil && (**winInfo).sig == kMySig) {

        err = GraphicsImportGetBoundsRect ((**winInfo).winGraphicImporter, &(**winInfo).winNatGraphicBoundsRect);

        if (err == noErr) {

            MaxWindowSize (theWindow, &(**winInfo).winBounds);

            w = (SInt16)((**winInfo).winBounds.right - (**winInfo).winBounds.left);

            h = (SInt16)((**winInfo).winBounds.bottom - (**winInfo).winBounds.top);

            SizeWindow (theWindow, w, h, false);

        }

    }

    return (OSErr)err;

}

#define USEGWORLDS 1

static OSErr AllocateGWorld (WindowInfoHandle winInfo) {

    OSErr                       err;

    (**winInfo).winGWorld = nil;

#if USEGWORLDS

    err = NewGWorld (&((**winInfo).winGWorld), 32, &(**winInfo).winNatGraphicBoundsRect,

                    nil, nil, pixPurge | useTempMem);

#endif

    if ((**winInfo).winGWorld == nil) {

        err = memFullErr;

    }

    return err;

}

static OSErr DoDraw (WindowInfoHandle winInfo) {

    ComponentResult             err;

    Boolean                     locked;

    PixMapHandle                pixMap;

    err = AllocateGWorld (winInfo);

    if (err == noErr) {

        pixMap = GetGWorldPixMap ((**winInfo).winGWorld);

        if (LockPixels (pixMap)) {

            locked = true;

        } else {

            locked = false;

            // Memory is gone, so forget about using a GWorld

            // use the current window set by the function calling this routine

            DisposeGWorld ((**winInfo).winGWorld);

            (**winInfo).winGWorld = nil;

        }

    } else if (err == memFullErr) {

        err = noErr;

    }

    if ((**winInfo).winGWorld != nil) {

        err = GraphicsImportSetGWorld ((**winInfo).winGraphicImporter, (**winInfo).winGWorld, nil);

    } else {

        err = GraphicsImportSetBoundsRect ((**winInfo).winGraphicImporter, &(**winInfo).winBounds);

    }

    if (err == noErr) {

        (void)GraphicsImportSetQuality ((**winInfo).winGraphicImporter, (**gPreferences).quality);

    }

    if (err == noErr) {

        err = GraphicsImportDraw ((**winInfo).winGraphicImporter);

    }

    if (locked == true) {

        UnlockPixels (pixMap);

    }

    return (OSErr)err;

}

OSErr   FindAllGIComponents (void) {

    Component               aComponent;

    ComponentDescription    looking,

                            cDesc;

    OSErr                   err;

    looking.componentType = GraphicsImporterComponentType;

    looking.componentSubType = 0;

    looking.componentManufacturer = 0;

    looking.componentFlags = 0;

    looking.componentFlagsMask = 1 << 12;

    gNumGIComponents = CountComponents (&looking);

    gAcceptedFlavorTypes = (OSType*)NewPtr ((long)(gNumGIComponents * sizeof (OSType)));

    err = MemError ();

    if (err == noErr) {

        long            i   = 0;

        aComponent = 0;     // start search from the top

        do {

            aComponent = FindNextComponent (aComponent, &looking);

            if (aComponent != 0) {

                err = GetComponentInfo (aComponent, &cDesc, nil, nil, nil);

                if (err == noErr) {

                    gAcceptedFlavorTypes[i++] = cDesc.componentSubType;

                }

            }

        } while (aComponent != 0 && err == noErr);

    }

    return err;

}

void ScaleImageToRect (Rect * origBounds, Rect * maxBounds, Rect * newBounds) {

    double      scale;

    scale = 1.0;        // default is no scaling

    newBounds->right = origBounds->right;

    newBounds->left = origBounds->left;

    newBounds->bottom = origBounds->bottom;

    newBounds->top = origBounds->top;

    if ((newBounds->right - newBounds->left) > (maxBounds->right - maxBounds->left)) {

        scale = (maxBounds->right - maxBounds->left) / (float)(newBounds->right - newBounds->left);

        newBounds->right *= scale;

        newBounds->left *= scale;

        newBounds->bottom *= scale;

        newBounds->top *= scale;

    }

    if ((newBounds->bottom - newBounds->top) > (maxBounds->bottom - maxBounds->top)) {

        scale = (maxBounds->bottom - maxBounds->top) / (float)(newBounds->bottom - newBounds->top);

        newBounds->right *= scale;

        newBounds->left *= scale;

        newBounds->bottom *= scale;

        newBounds->top *= scale;

    }

    // Move the adjusted rect so that it fits in the original Rect.

    // This is needed in the Nav Preview window.

    newBounds->right += maxBounds->left;

    newBounds->left += maxBounds->left;

    newBounds->bottom += maxBounds->top;

    newBounds->top += maxBounds->top;

}

OSErr   NewWindowWithPict (FSSpec * theFileSpec, WindowPtr behindWindow) {

    WindowPtr                   theWindow;

    WindowInfoHandle            winInfo;

    OSErr                       err;

    err = MakeNewWindow (theFileSpec->name, false, behindWindow, &theWindow);

    if (err == noErr) {

        if (theWindow != nil) {

            winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

        }

        if (winInfo != nil && (**winInfo).sig == kMySig) {

            BlockMoveData (theFileSpec, &((**winInfo).winSpec), sizeof (FSSpec));

        } else {

            err = paramErr;

        }

    }

    if (err == noErr) {

        CursHandle      cursor = nil;

        cursor = GetCursor (watchCursor);

        SetCursor (*cursor);

        err = DrawFile (theWindow);

        ObscureCursor ();

        cursor = (CursHandle)NewHandle (sizeof (Cursor));

        GetQDGlobalsArrow (*cursor);

        SetCursor (*cursor);

        DisposeHandle ((Handle)cursor);

    }

    return err;

}

OSErr DrawHandle (WindowPtr theWindow) {

    WindowInfoHandle            winInfo;

    ComponentResult             err;

    SInt8                       hState;                     

    Rect                        winRect;

    if (theWindow != nil) {

        winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

    }

    if (winInfo != nil && (**winInfo).sig == kMySig) {

        hState = HGetState ((Handle)winInfo);

        HLock ((Handle)winInfo);

        SetPort (GetWindowPort(theWindow));

        (**winInfo).winGraphicImporter = OpenDefaultComponent (GraphicsImporterComponentType, (**winInfo).winGraphicType);

        if ((**winInfo).winGraphicImporter != nil) {

            err = GraphicsImportSetDataHandle ((**winInfo).winGraphicImporter, (**winInfo).winDataHandle);

        } else {

            err = couldntGetRequiredComponent;

        }

        if (err == noErr) {

            SizeGraphicWindow (theWindow);

            GetWindowPortBounds (theWindow, &winRect);

        }

        if (err == noErr) {

            err = DoDraw (winInfo);

        }

        if (err == noErr) {

            if ((**winInfo).winGWorld != nil) {

                // We drew into a GWorld, not the window, so an update event is needed

                InvalWindowRect (theWindow, &winRect);

            }

        }

        if ((**winInfo).winGraphicImporter != nil) {

            (void)CloseComponent ((**winInfo).winGraphicImporter);

            (**winInfo).winGraphicImporter = nil;

        }

        HSetState ((Handle)winInfo, hState);

        if (err != noErr) {

            ReleaseMemory (winInfo, true);

        }

    }

    return (OSErr)err;

}

OSErr DrawFile (WindowPtr theWindow) {

    WindowInfoHandle            winInfo;

    ComponentResult             err;

    SInt8                       hState;

    if (theWindow != nil) {

        winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

    }

    if (winInfo != nil && (**winInfo).sig == kMySig) {

        hState = HGetState ((Handle)winInfo);

        HLock ((Handle)winInfo);

        SetPort (GetWindowPort(theWindow));

        err = GetGraphicsImporterForFile (&(**winInfo).winSpec, &(**winInfo).winGraphicImporter);

        if (err == noErr) {

            err = SizeGraphicWindow (theWindow);

        }

        if (err == noErr) {

            err = DoDraw (winInfo);

        }

        // Generates the update event needed to get us to draw into the window.

        ShowWindow (theWindow);

        if ((**winInfo).winGraphicImporter != nil) {

            (void)CloseComponent ((**winInfo).winGraphicImporter);

            (**winInfo).winGraphicImporter = nil;

        }

        HSetState ((Handle)winInfo, hState);

    }

    return (OSErr)err;

}

OSErr UpdateGraphWindow (WindowPtr theWindow, RgnHandle updateRgn) {

#pragma unused (updateRgn)

    OSErr                       err;

    WindowInfoHandle            winInfo;

    SInt8                       hState;                     

    Rect                        winBounds;

    PixMapHandle                pixMap;

    if (theWindow != nil) {

        winInfo = (WindowInfoHandle)GetWRefCon (theWindow);

    }

    if (winInfo != nil && (**winInfo).sig == kMySig) {

        hState = HGetState ((Handle)winInfo);

        HLock ((Handle)winInfo);

        SetPort (GetWindowPort(theWindow));

        if ((**winInfo).winMovie != nil) {

            err = UpdateMovie ((**winInfo).winMovie);

            MoviesTask (DoTheRightThing, DoTheRightThing);

        } else {

            if ((**winInfo).winGWorld != nil) {

                pixMap = GetGWorldPixMap ((**winInfo).winGWorld);

                if (LockPixels (pixMap)) {

                    GetWindowPortBounds (theWindow, &winBounds);

                    CopyBits ((BitMap*)*GetPortPixMap ((**winInfo).winGWorld),

                                (BitMap*)*GetPortPixMap (GetWindowPort(theWindow)),

                                &(**winInfo).winNatGraphicBoundsRect, &winBounds, srcCopy, nil);

                    UnlockPixels (pixMap);

                    err = noErr;

                } else {

                    DisposeGWorld ((**winInfo).winGWorld);

                    (**winInfo).winGWorld = nil;

                    if ((**winInfo).winDataHandle != nil) {

                        err = DrawHandle (theWindow);

                    } else {

                        err = DrawFile (theWindow);

                    }

                    if ((**winInfo).winGWorld != nil) {

                        pixMap = GetGWorldPixMap ((**winInfo).winGWorld);

                        if (LockPixels (pixMap)) {

                            GetWindowPortBounds (theWindow, &winBounds);

                            CopyBits ((BitMap*)*GetPortPixMap ((**winInfo).winGWorld),

                                        (BitMap*)*GetPortPixMap (GetWindowPort(theWindow)),

                                        &(**winInfo).winNatGraphicBoundsRect, &winBounds, srcCopy, nil);

                            UnlockPixels (pixMap);

                        }

                    }

                }

            } else {

                if ((**winInfo).winDataHandle != nil) {

                    err = DrawHandle (theWindow);

                } else {

                    err = DrawFile (theWindow);

                }

            }

        }

        HSetState ((Handle)winInfo, hState);

    }

    return err;

}