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- /*
- File: CollectPictColors.c
-
- Contains: This application uses the Picture Utilities package
- and Jon Zap's KnowsPict application to demonstrate
- two methods of collecting colors used by Pict
- resources. In this program, you'll see different
- results for each method. With the Pict Util package,
- the routine, GetPictInfo, returns a colortable with
- the number of colors requested, but only the colors
- used in the picture or it's pixmap(s) image data are
- stored in the requested colors. As for the
- remaining requested colors not used by the picture
- but stored in the picture's pixmap(s) colortable,
- they are set to black. In Jon's application this
- doesn't occur. All the colors used by the picture,
- including those stored in the picture's pixmap(s)
- colortable are returned. To use Jon's routines,
- simply call CollectColors with the appropriate
- parameters.
-
- Written by: Edgar Lee
-
- Copyright: Copyright © 1992-1999 by Apple Computer, Inc., All Rights Reserved.
-
- You may incorporate this Apple sample source code into your program(s) without
- restriction. This Apple sample source code has been provided "AS IS" and the
- responsibility for its operation is yours. You are not permitted to redistribute
- this Apple sample source code as "Apple sample source code" after having made
- changes. If you're going to re-distribute the source, we require that you make
- it clear in the source that the code was descended from Apple sample source
- code, but that you've made changes.
-
- Change History (most recent first):
- 7/8/1999 Karl Groethe Updated for Metrowerks Codewarror Pro 2.1
- 02/20/92 Edgar Lee Created
-
- */
- /* Constant Declarations */
- #include "CLUTBuilder.h"
- #include <MacTypes.h>
- #include <MacMemory.h>
- #include <Quickdraw.h>
- #include <Fonts.h>
- #include <Windows.h>
- #include <Menus.h>
- #include <TextEdit.h>
- #include <Events.h>
- #include <Dialogs.h>
- #include <PictUtils.h>
- #include <Resources.h>
-
-
- #define WWIDTH 470
- #define WHEIGHT 330
-
- #define WLEFT (((qd.screenBits.bounds.right - qd.screenBits.bounds.left) - WWIDTH) / 2)
- #define WTOP (((qd.screenBits.bounds.bottom - qd.screenBits.bounds.top) - WHEIGHT) / 2)
-
- void initMac();
- void createWindow();
- void drawPictureColors();
- void drawColors();
- void doEventLoop();
-
- void main()
- {
- initMac();
-
- createWindow();
-
- doEventLoop();
- }
-
- void initMac()
- {
- MaxApplZone();
-
- InitGraf( &qd.thePort );
- InitFonts();
- InitWindows();
- InitMenus();
- TEInit();
- InitDialogs( nil );
- InitCursor();
- FlushEvents( 0, everyEvent );
- }
-
- void createWindow()
- {
- Rect rect;
- WindowPtr window;
-
- SetRect( &rect, WLEFT, WTOP, WLEFT + WWIDTH, WTOP + WHEIGHT );
- window = NewCWindow( 0L, &rect, "\pCollect Pict Colors", true, documentProc,
- (WindowPtr)-1L, true, 0L );
- SetPort( window );
-
- TextFont( kFontIDGeneva );
- TextSize( 9 );
- TextMode( srcCopy );
- }
-
- void drawPictureColors()
- {
- Rect rect;
- PicHandle pict;
- CTabHandle ctable;
- short depth, directFlag;
- PictInfo thePictInfo;
- CTabHandle CollectColors();
-
- /* Load the pict resource. */
- pict = (PicHandle)GetResource( 'PICT', 128 );
-
- /* Make sure it's not purgeable. */
- HNoPurge( (Handle)pict );
-
- /* Set a black background. */
- SetRect( &rect, 0, 0, WWIDTH, WHEIGHT );
- ForeColor( blackColor );
- PaintRect( &rect );
-
- /* See what CollectColors returns. */
- ctable = CollectColors( pict, &depth, &directFlag );
- drawColors( ctable, 20, "\pCOLLECTCOLORS Colortable" );
-
- /* Draw the picture. */
- rect = (**pict).picFrame;
- OffsetRect( &rect, -rect.left + 160, -rect.top + 70 );
- DrawPicture( pict, &rect );
-
- /* Frame the picture. */
- InsetRect( &rect, -2, -2 );
- FrameRect( &rect );
-
- /* Now see what GetPictInfo returns. */
- GetPictInfo( pict, &thePictInfo, returnColorTable, 256, medianMethod, 0 );
- drawColors( thePictInfo.theColorTable, rect.right + 15, "\pGETPICTINFO Colortable" );
-
- /* Release the resource. */
- ReleaseResource( (Handle)pict );
-
- /* Release the colortable. */
- DisposeCTable( ctable );
- }
-
- void drawColors( ctable, offset, string )
- CTabHandle ctable;
- int offset;
- Str255 string;
- {
- int i;
- int col, row;
- Rect rect;
-
- ForeColor( whiteColor );
- BackColor( blackColor );
-
- MoveTo( offset, 20 );
- DrawString( string );
-
- if (ctable != nil)
- {
- for (i = 0; i < 256; i++)
- {
- col = offset + ((i % 8) * 16);
- row = 30 + ((i / 8) * 9);
-
- SetRect( &rect, col, row, col + 10, row + 3 );
- RGBForeColor( &(**ctable).ctTable[i].rgb );
- PaintRect( &rect );
-
- ForeColor( whiteColor );
- InsetRect( &rect, -2, -2 );
- FrameRect( &rect );
- }
- }
- else
- {
- MoveTo( 12, offset );
- DrawString( "\p-Sorry could not load PICT resource." );
- }
- }
-
- void doEventLoop()
- {
- EventRecord event;
- WindowPtr window;
- short clickArea;
- Rect screenRect;
-
- for (;;)
- {
- if (WaitNextEvent( everyEvent, &event, 0, nil ))
- {
- if (event.what == mouseDown)
- {
- clickArea = FindWindow( event.where, &window );
-
- if (clickArea == inDrag)
- {
- screenRect = (**GetGrayRgn()).rgnBBox;
- DragWindow( window, event.where, &screenRect );
- }
- else if (clickArea == inContent)
- {
- if (window != FrontWindow())
- SelectWindow( window );
- }
- else if (clickArea == inGoAway)
- if (TrackGoAway( window, event.where ))
- return;
- }
- else if (event.what == updateEvt)
- {
- window = (WindowPtr)event.message;
- SetPort( window );
-
- BeginUpdate( window );
- drawPictureColors();
- EndUpdate( window );
- }
- }
- }
- }