More imaging and compositing stuff

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@5635 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,15 @@
+1999-12-28  Adam Fedor  <fedor@gnu.org>
+
+	* Headers/gnustep/gui/DPSOperators.h: New operators colorimage
+	and alphaimage.
+	* Headers/gnustep/gui/NSGraphicsContext.h: Likewise.
+	* Source/NSGraphicsContex.m: Add stubs.
+
+	* Source/NSBitmapImageRep.m (-draw): Implement using NSDrawBitmap.
+	* Source/NSCachedImageRep.m: Conditional use of PScomposite functions
+	for drawing methods (set user default "ImageCompositing" to YES
+	for this to work).
+
 Tue Dec 28 15:58:00 1999  Richard Frith-Macdonald <richard@brainstorm.co.uk>
 
 	Initial hack of support for encoding/decoding images - untested.

Headers/gnustep/gui/DPSOperators.h

@@ -484,6 +484,14 @@ static inline void
 DPSimagemask(GSCTXT *ctxt)
 __attribute__((unused));
 
+static inline void
+DPScolorimage(GSCTXT *ctxt)
+__attribute__((unused));
+
+static inline void
+DPSalphaimage(GSCTXT *ctxt)
+__attribute__((unused));
+
 static inline void
 DPSkshow(GSCTXT *ctxt, const char *s)
 __attribute__((unused));
@@ -1700,6 +1708,20 @@ DPSimagemask(GSCTXT *ctxt)
     (ctxt, @selector(DPSimagemask));
 }
 
+static inline void
+DPScolorimage(GSCTXT *ctxt)
+{
+  (ctxt->methods->DPScolorimage)
+    (ctxt, @selector(DPScolorimage));
+}
+
+static inline void
+DPSalphaimage(GSCTXT *ctxt)
+{
+  (ctxt->methods->DPSalphaimage)
+    (ctxt, @selector(DPSalphaimage));
+}
+
 static inline void
 DPSkshow(GSCTXT *ctxt, const char *s)
 {

Headers/gnustep/gui/GSMethodTable.h

@@ -273,6 +273,10 @@ typedef struct {
 	(NSGraphicsContext*, SEL);
   void (*DPSimagemask)
 	(NSGraphicsContext*, SEL);
+  void (*DPScolorimage)
+	(NSGraphicsContext*, SEL);
+  void (*DPSalphaimage)
+	(NSGraphicsContext*, SEL);
   void (*DPSkshow_)
 	(NSGraphicsContext*, SEL, const char*);
   void (*DPSrectfill____)

Headers/gnustep/gui/NSGraphicsContext.h

@@ -287,6 +287,8 @@ NSGraphicsContext	*GSCurrentContext();
 - (void) DPSfill;
 - (void) DPSimage;
 - (void) DPSimagemask;
+- (void) DPScolorimage;
+- (void) DPSalphaimage;
 - (void) DPSkshow: (const char *)s ;
 - (void) DPSrectfill: (float)x : (float)y : (float)w : (float)h ;
 - (void) DPSrectstroke: (float)x : (float)y : (float)w : (float)h ;

Headers/gnustep/gui/PSOperators.h

@@ -488,6 +488,14 @@ static inline void
 PSimagemask()
 __attribute__((unused));
 
+static inline void
+PScolorimage()
+__attribute__((unused));
+
+static inline void
+PSalphaimage()
+__attribute__((unused));
+
 static inline void
 PSkshow(const char *s)
 __attribute__((unused));
@@ -1406,6 +1414,18 @@ PSimagemask()
   DPSimagemask(DEFCTXT);
 }
 
+static inline void
+PScolorimage()
+{
+  DPScolorimage(DEFCTXT);
+}
+
+static inline void
+PSalphaimage()
+{
+  DPSalphaimage(DEFCTXT);
+}
+
 static inline void
 PSkshow(const char *s)
 {

Headers/gnustep/gui/nsimage-tiff.h

@@ -48,6 +48,7 @@ typedef struct {
     u_short planarConfig;     /* meshed or separate */
     u_short photoInterp;      /* photometric interpretation of bitmap data, */
     u_short compression;
+    u_short extraSamples;     /* Alpha */
     int     quality;	      /* compression quality (for jpeg) 1 to 255 */
     int     numImages;	      /* number of images in tiff */
     int     error;

Source/NSBitmapImageRep.m

@@ -353,7 +353,18 @@
 
 - (BOOL) draw
 {
-  return NO;
+  NSDrawBitmap(NSZeroRect,
+	       _pixelsWide,
+	       _pixelsHigh,
+	       bitsPerSample,
+	       numColors,
+	       bitsPerPixel,
+	       bytesPerRow,
+	       _isPlanar,
+	       hasAlpha,
+	       _colorSpace,
+	       imagePlanes);
+  return YES;
 }
 
 //

Source/NSCachedImageRep.m

@@ -34,10 +34,14 @@
 #include <gnustep/gui/config.h>
 #include <Foundation/NSString.h>
 #include <Foundation/NSException.h>
+#include <Foundation/NSUserDefaults.h>
 
 #include <AppKit/NSCachedImageRep.h>
 #include <AppKit/NSView.h>
 #include <AppKit/NSWindow.h>
+#include <AppKit/PSOperators.h>
+
+static BOOL NSImageCompositing = NO;
 
 @interface GSCacheW : NSWindow
 @end
@@ -69,6 +73,12 @@
 
 @implementation NSCachedImageRep
 
+- (void) initialize
+{
+  NSImageCompositing = [[NSUserDefaults standardUserDefaults]
+  	boolForKey: @"ImageCompositing"];
+}
+
 // Initializing an NSCachedImageRep 
 - (id) initWithSize: (NSSize)aSize
 	      depth: (NSWindowDepth)aDepth
@@ -142,8 +152,13 @@
 
 - (BOOL)draw
 {
-  NSCopyBits([_window gState], _rect, _rect.origin);
-  return NO;
+  if (NSImageCompositing)
+    PScomposite(NSMinX(_rect), NSMinY(_rect), NSWidth(_rect), NSHeight(_rect),
+	      [_window gState], NSMinX(_rect), NSMinY(_rect),
+	      NSCompositeSourceOver);
+  else
+    NSCopyBits([_window gState], _rect, _rect.origin);
+  return YES;
 }
 
 - (BOOL) drawAtPoint: (NSPoint)aPoint
@@ -160,7 +175,12 @@
       if ([[ctxt focusView] isFlipped])
 	aPoint.y -= size.height;
     }
-  NSCopyBits([_window gState], _rect, aPoint);
+  if (NSImageCompositing)
+    PScomposite(NSMinX(_rect), NSMinY(_rect), NSWidth(_rect), NSHeight(_rect),
+	      [_window gState], aPoint.x, aPoint.y,
+	      NSCompositeSourceOver);
+  else
+    NSCopyBits([_window gState], _rect, aPoint);
   return NO;
 }
 
@@ -176,8 +196,13 @@
   ctxt = GSCurrentContext();
   if ([[ctxt focusView] isFlipped])
     aRect.origin.y -= NSHeight(aRect);
-  NSCopyBits([_window gState], _rect, aRect.origin);
-  return NO;
+  if (NSImageCompositing)
+    PScomposite(NSMinX(_rect), NSMinY(_rect), NSWidth(_rect), NSHeight(_rect),
+	      [_window gState], NSMinX(aRect), NSMinY(aRect),
+	      NSCompositeSourceOver);
+  else
+    NSCopyBits([_window gState], _rect, aRect.origin);
+  return YES;
 }
 
 // NSCoding protocol

Source/NSGraphicsContext.m

@@ -587,6 +587,10 @@ NSGraphicsContext	*GSCurrentContext()
     GET_IMP(@selector(DPSimage));
   methodTable.DPSimagemask =
     GET_IMP(@selector(DPSimagemask));
+  methodTable.DPScolorimage =
+    GET_IMP(@selector(DPScolorimage));
+  methodTable.DPSalphaimage =
+    GET_IMP(@selector(DPSalphaimage));
   methodTable.DPSkshow_ =
     GET_IMP(@selector(DPSkshow:));
   methodTable.DPSrectfill____ =
@@ -1419,6 +1423,16 @@ NSGraphicsContext	*GSCurrentContext()
   [self subclassResponsibility: _cmd];
 }
 
+- (void) DPScolorimage 
+{
+  [self subclassResponsibility: _cmd];
+}
+
+- (void) DPSalphaimage 
+{
+  [self subclassResponsibility: _cmd];
+}
+
 - (void) DPSkshow: (const char *)s 
 {
   [self subclassResponsibility: _cmd];

Source/NSImageRep.m

@@ -32,6 +32,7 @@
 #include <Foundation/NSData.h>
 #include <Foundation/NSException.h>
 #include <Foundation/NSNotification.h>
+#include <Foundation/NSUserDefaults.h>
 #include <AppKit/NSImageRep.h>
 #include <AppKit/NSBitmapImageRep.h>
 #include <AppKit/NSEPSImageRep.h>
@@ -51,7 +52,9 @@ static NSMutableArray*	imageReps = NULL;
   if (self == [NSImageRep class])
     {
       imageReps = [[NSMutableArray alloc] initWithCapacity: 2];
-      //      [imageReps addObject: [NSBitmapImageRep class]];
+      if ([[NSUserDefaults standardUserDefaults] 
+      		boolForKey: @"ImageCompositing"])
+        [imageReps addObject: [NSBitmapImageRep class]];
       //      [imageReps addObject: [NSEPSImageRep class]];
     }
 }

Source/NSScreen.m

@@ -109,10 +109,17 @@ static NSScreen *mainScreen = nil;
   else
     device_desc = [[NSMutableDictionary dictionary] retain];
 
+  if (ctxt == nil)
+    {
+      NSLog(@"Internal error: No current context\n");
+      [self release];
+      return nil;
+    }
+
   if ([ctxt isDrawingToScreen] == NO)
     {
       NSLog(@"Internal error: trying to find screen with wrong context\n");
-      [self dealloc];
+      [self release];
       return nil;
     }
 

Source/tiff.m

@@ -84,7 +84,7 @@ static tsize_t
 TiffHandleRead(thandle_t handle, tdata_t buf, toff_t count)
 {
   chandle_t* chand = (chandle_t *)handle;
-  NSDebugLog (@"TiffHandleRead\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleRead\n");
   if (chand->position >= chand->size)
     return 0;
   if (chand->position + count > chand->size)
@@ -97,7 +97,7 @@ static tsize_t
 TiffHandleWrite(thandle_t handle, tdata_t buf, toff_t count)
 {
   chandle_t* chand = (chandle_t *)handle;
-  NSDebugLog (@"TiffHandleWrite\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleWrite\n");
   if (chand->mode == "r")
     return 0;
   if (chand->position + count > chand->size)
@@ -120,7 +120,7 @@ static toff_t
 TiffHandleSeek(thandle_t handle, toff_t offset, int mode)
 {
   chandle_t* chand = (chandle_t *)handle;
-  NSDebugLog (@"TiffHandleSeek\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleSeek\n");
   switch(mode) 
     {
     case SEEK_SET: chand->position = offset; break;
@@ -139,7 +139,7 @@ TiffHandleClose(thandle_t handle)
 {
   chandle_t* chand = (chandle_t *)handle;
 
-  NSDebugLog (@"TiffHandleClose\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleClose\n");
   /* Presumably, we don't need the handle anymore */
   OBJC_FREE(chand);
   return 0;
@@ -149,7 +149,7 @@ static toff_t
 TiffHandleSize(thandle_t handle)
 {
   chandle_t* chand = (chandle_t *)handle;
-  NSDebugLog (@"TiffHandleSize\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleSize\n");
   return chand->size;
 }
 
@@ -158,7 +158,7 @@ TiffHandleMap(thandle_t handle, tdata_t* data, toff_t* size)
 {
   chandle_t* chand = (chandle_t *)handle;
   
-  NSDebugLog (@"TiffHandleMap\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleMap\n");
   *data = chand->data;
   *size = chand->size;
     
@@ -168,7 +168,7 @@ TiffHandleMap(thandle_t handle, tdata_t* data, toff_t* size)
 static void
 TiffHandleUnmap(thandle_t handle, tdata_t data, toff_t size)
 {
-  NSDebugLog (@"TiffHandleUnmap\n");
+  NSDebugLLog(@"NSImage", @"TiffHandleUnmap\n");
   /* Nothing to unmap. */
 }
 
@@ -177,7 +177,7 @@ TIFF*
 NSTiffOpenDataRead(const char* data, long size)
 {
   chandle_t* handle;
-  NSDebugLog (@"NSTiffOpenData\n");
+  NSDebugLLog(@"NSImage", @"NSTiffOpenData\n");
   OBJC_MALLOC(handle, chandle_t, 1);
   handle->data = (char*)data;
   handle->outdata = 0;
@@ -197,7 +197,7 @@ TIFF*
 NSTiffOpenDataWrite(char **data, long *size)
 {
   chandle_t* handle;
-  NSDebugLog (@"NSTiffOpenData\n");
+  NSDebugLLog(@"NSImage", @"NSTiffOpenData\n");
   OBJC_MALLOC(handle, chandle_t, 1);
   handle->data = *data;
   handle->outdata = data;
@@ -378,7 +378,7 @@ NSTiffRead(int imageNumber, TIFF* image, NSTiffInfo* info, char* data)
     case PHOTOMETRIC_RGB:
       if (newinfo->planarConfig == PLANARCONFIG_CONTIG) 
 	{
-	  NSDebugLog(@"PHOTOMETRIC_RGB: CONTIG\n");
+	  NSDebugLLog(@"NSImage", @"PHOTOMETRIC_RGB: CONTIG\n");
 	  for (row = 0; row < newinfo->height; ++row) 
 	    {
 	      READ_SCANLINE(0)
@@ -391,7 +391,7 @@ NSTiffRead(int imageNumber, TIFF* image, NSTiffInfo* info, char* data)
 	} 
       else 
 	{
-	  NSDebugLog(@"PHOTOMETRIC_RGB: NOT CONTIG\n");
+	  NSDebugLLog(@"NSImage", @"PHOTOMETRIC_RGB: NOT CONTIG\n");
 	  for (i = 0; i < newinfo->samplesPerPixel; i++)
 	    for (row = 0; row < newinfo->height; ++row) 
 	      {
@@ -470,7 +470,7 @@ NSWriteTiff(TIFF* image, NSTiffInfo* info, char* data)
       case PHOTOMETRIC_RGB:
 	if (info->planarConfig == PLANARCONFIG_CONTIG) 
 	  {
-	    NSDebugLog(@"PHOTOMETRIC_RGB: CONTIG\n");
+	    NSDebugLLog(@"NSImage", @"PHOTOMETRIC_RGB: CONTIG\n");
 	    for (row = 0; row < info->height; ++row) 
 	      {
 		WRITE_SCANLINE(0)
@@ -479,7 +479,7 @@ NSWriteTiff(TIFF* image, NSTiffInfo* info, char* data)
 	  } 
 	else 
 	  {
-	    NSDebugLog(@"PHOTOMETRIC_RGB: NOT CONTIG\n");
+	    NSDebugLLog(@"NSImage", @"PHOTOMETRIC_RGB: NOT CONTIG\n");
 	    for (i = 0; i < info->samplesPerPixel; i++)
 	      {
 		for (row = 0; row < info->height; ++row)