Stephan Aßmus
0199e126e2
* VertexSource virtualizes the AGG "VertexSource" interface * Transformer is an interface for building pipelines of VertexSource objects, each taking the output of the previous object and transforming it in some way * StrokeTransformer is currently the only implementation and converts a path into an outline stroke * PathSource implements the VertexSource interface on top of a VectorPath which it converts into an agg::path_storage and into an agg::conv_curve<agg::path_storage> to get smooth bezier curves * added VertexSource() to Shape class, which returns the last object of the transformation pipeline, it uses a PathSource for the root object * changed IconRenderer to use the new polymorphic VertexSource pipeline git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17896 a95241bf-73f2-0310-859d-f6bbb57e9c96
127 lines
1.9 KiB
C++
127 lines
1.9 KiB
C++
#include "Shape.h"
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#include <new>
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#include <limits.h>
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#include "Style.h"
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#include "VectorPath.h"
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using std::nothrow;
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// constructor
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Shape::Shape(::Style* style)
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: Observable(),
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Referenceable(),
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PathContainerListener(),
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fPaths(new (nothrow) PathContainer()),
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fStyle(style),
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fPathSource(fPaths),
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fTransformers(4)
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{
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if (fPaths)
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fPaths->AddListener(this);
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if (fStyle)
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fStyle->Acquire();
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}
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// destructor
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Shape::~Shape()
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{
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int32 count = fTransformers.CountItems();
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for (int32 i = 0; i < count; i++)
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delete (Transformer*)fTransformers.ItemAtFast(i);
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fPaths->MakeEmpty();
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fPaths->RemoveListener(this);
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delete fPaths;
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if (fStyle)
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fStyle->Release();
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}
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// PathAdded
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void
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Shape::PathAdded(VectorPath* path)
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{
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path->Acquire();
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}
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// PathRemoved
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void
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Shape::PathRemoved(VectorPath* path)
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{
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path->Release();
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}
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// #pragma mark -
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// InitCheck
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status_t
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Shape::InitCheck() const
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{
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return fPaths ? B_OK : B_NO_MEMORY;
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}
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// SetStyle
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void
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Shape::SetStyle(::Style* style)
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{
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if (fStyle == style)
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return;
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if (fStyle)
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fStyle->Release();
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fStyle = style;
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if (fStyle)
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fStyle->Acquire();
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Notify();
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}
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// Bounds
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BRect
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Shape::Bounds() const
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{
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BRect bounds(LONG_MAX, LONG_MAX, LONG_MIN, LONG_MIN);
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int32 count = fPaths->CountPaths();
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for (int32 i = 0; i < count; i++)
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bounds = bounds | fPaths->PathAtFast(i)->Bounds();
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return bounds;
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}
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// VertexSource
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::VertexSource&
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Shape::VertexSource()
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{
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fPathSource.Update();
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::VertexSource* source = &fPathSource;
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int32 count = fTransformers.CountItems();
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for (int32 i = 0; i < count; i++) {
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Transformer* t = (Transformer*)fTransformers.ItemAtFast(i);
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t->SetSource(*source);
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source = t;
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}
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return *source;
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}
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// AppendTransformer
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bool
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Shape::AppendTransformer(Transformer* transformer)
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{
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if (!transformer)
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return false;
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if (!fTransformers.AddItem((void*)transformer))
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return false;
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Notify();
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return true;
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}
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