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/*
* Copyright 2011 Alex Merry <dev@randomguy3.me.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#import "TZFoundation.h"
#import <gtk/gtk.h>
// classes
#import "Graph.h"
#import "Grid.h"
#import "PickSupport.h"
#import "TikzDocument.h"
// protocols
#import "Surface.h"
typedef enum {
NoHandle,
EastHandle,
SouthEastHandle,
SouthHandle,
SouthWestHandle,
WestHandle,
NorthWestHandle,
NorthHandle,
NorthEastHandle
} ResizeHandle;
@interface GraphRenderer: NSObject <RenderDelegate> {
TikzDocument *doc;
NSObject<Surface> *surface;
Grid *grid;
NSRect selectionBox;
Node *halfEdgeOrigin;
NSPoint halfEdgeOriginPoint;
NSPoint halfEdgeEnd;
BOOL showBoundingBoxHandles;
}
- (id) initWithSurface:(NSObject <Surface> *)surface;
- (id) initWithSurface:(NSObject <Surface> *)surface document:(TikzDocument*)document;
- (void) renderWithContext:(id<RenderContext>)context;
- (void) invalidateGraph;
- (void) invalidateNode:(Node*)node;
- (void) invalidateEdge:(Edge*)edge;
- (void) invalidateNodesHitBy:(NSPoint)point;
- (BOOL) point:(NSPoint)p hitsNode:(Node*)node;
- (BOOL) point:(NSPoint)p hitsEdge:(Edge*)edge withFuzz:(float)fuzz;
/**
* Finds a node at the given screen location.
*
* If there is more than one node at this point (because they overlap),
* an arbitrary one is returned.
*/
- (Node*) anyNodeAt:(NSPoint)p;
/**
* Finds an edge at the given screen location.
*
* If there is more than one edge at this point (because they overlap),
* an arbitrary one is returned.
*
* @param fuzz the fuzz for detecting edges: this will pick up
* edges that are close to the point
*/
- (Edge*) anyEdgeAt:(NSPoint)p withFuzz:(float)fuzz;
- (id<Surface>) surface;
- (Transformer*) transformer;
- (Grid*) grid;
- (PickSupport*) pickSupport;
- (Graph*) graph;
- (TikzDocument*) document;
- (void) setDocument:(TikzDocument*)document;
- (NSRect) selectionBox;
- (void) setSelectionBox:(NSRect)box;
- (void) clearSelectionBox;
- (void) setHalfEdgeFrom:(Node*)origin to:(NSPoint)end;
- (void) clearHalfEdge;
- (BOOL) boundingBoxHandlesShown;
- (void) setBoundingBoxHandlesShown:(BOOL)shown;
- (ResizeHandle) boundingBoxResizeHandleAt:(NSPoint)point;
- (NSRect) boundingBoxResizeHandleRect:(ResizeHandle)handle;
@end
// vim:ft=objc:ts=8:et:sts=4:sw=4
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