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https://github.com/gnustep/libs-back.git
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b53fe57e7c
See bug report #27782 In particular, fixed -[NSImage drawXXX] and -[NSImage composite/dissolveXXX] methods to work exactly as Cocoa when the Cairo backend is used. Added a new draw operator (in addition to composite) to the backend. Cairo is the only backend that implements it for now. Eliminated as many flipping checks as possible. Warning: Untested with the winlib backend. You must update, recompile and install both Back and Gui. git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/back/trunk@30523 72102866-910b-0410-8b05-ffd578937521
121 lines
3.9 KiB
Objective-C
121 lines
3.9 KiB
Objective-C
/* GSGState - Implements generic graphic state drawing for non-PS backends
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Copyright (C) 1995 Free Software Foundation, Inc.
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Written by: Adam Fedor <fedor@boulder.colorado.edu>
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Date: Nov 1995
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Extracted from XGPS: Fred Kiefer <FredKiefer@gmx.de>
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Date: March 2002
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This file is part of the GNU Objective C User Interface Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; see the file COPYING.LIB.
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If not, see <http://www.gnu.org/licenses/> or write to the
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Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef _GSGState_h_INCLUDE
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#define _GSGState_h_INCLUDE
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#include <AppKit/NSGraphicsContext.h> // needed for NSCompositingOperation
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#include <Foundation/NSArray.h>
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#include <Foundation/NSObject.h>
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#include <gsc/gscolors.h>
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@class NSAffineTransform;
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@class NSBezierPath;
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@class NSFont;
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@class NSColorSpace;
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@class GSContext;
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typedef enum {
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path_stroke, path_fill, path_eofill, path_clip, path_eoclip
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} ctxt_object_t;
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typedef enum {
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COLOR_STROKE = 1,
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COLOR_FILL = 2,
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COLOR_BOTH = 3 /* COLOR_BOTH = COLOR_FILL || COLOR_STROKE */
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} color_state_t;
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@interface GSGState : NSObject <NSCopying>
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{
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@public
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GSContext *drawcontext;
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NSAffineTransform *ctm;
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NSPoint offset; /* Offset from Drawable origin */
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NSBezierPath *path; /* Current path */
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GSFontInfo *font; /* Current font reference */
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NSColorSpace *fillColorS; /* Colorspace used for fill drawing */
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NSColorSpace *strokeColorS; /* Colorspace used for stroke drawing */
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device_color_t fillColor; /* fill color */
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device_color_t strokeColor; /* stroke color */
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color_state_t cstate; /* state last time color was set */
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NSImage *pattern; /* If set, image to draw with */
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float charSpacing;
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NSAffineTransform *textCtm; /* Text transform - concat with ctm */
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GSTextDrawingMode textMode;
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BOOL viewIsFlipped;
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}
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- initWithDrawContext: (GSContext *)context;
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- deepen;
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- (void) setOffset: (NSPoint)theOffset;
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- (NSPoint) offset;
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- (void) setColor: (device_color_t *)color state: (color_state_t)cState;
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- (void) GSSetPatterColor: (NSImage*)image;
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- (void) compositeGState: (GSGState *)source
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fromRect: (NSRect)aRect
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toPoint: (NSPoint)aPoint
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op: (NSCompositingOperation)op;
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- (void) dissolveGState: (GSGState *)source
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fromRect: (NSRect)aRect
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toPoint: (NSPoint)aPoint
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delta: (float)delta;
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- (void) compositeGState: (GSGState *)source
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fromRect: (NSRect)aRect
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toPoint: (NSPoint)aPoint
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op: (NSCompositingOperation)op
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fraction: (float)delta;
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- (void) compositerect: (NSRect)aRect
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op: (NSCompositingOperation)op;
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- (NSPoint) pointInMatrixSpace: (NSPoint)point;
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- (NSPoint) deltaPointInMatrixSpace: (NSPoint)point;
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- (NSRect) rectInMatrixSpace: (NSRect)rect;
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@end
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/** Informal protocol to which backends can conform to when they support drawing a
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graphics state with arbitrary transforms on the current graphics context. */
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@interface NSObject (GSDrawGState)
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- (void) drawGState: (GSGState *)source
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fromRect: (NSRect)aRect
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toPoint: (NSPoint)aPoint
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op: (NSCompositingOperation)op
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fraction: (float)delta;
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@end
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#include "GSGStateOps.h"
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#endif /* _GSGState_h_INCLUDE */
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