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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_RENDER_PROCESS_H_
#define CONTENT_RENDERER_RENDER_PROCESS_H_
#include "content/common/child_process.h"
#include "skia/ext/platform_canvas.h"
class TransportDIB;
namespace gfx {
class Rect;
}
namespace content {
// A abstract interface representing the renderer end of the browser<->renderer
// connection. The opposite end is the RenderProcessHost. This is a singleton
// object for each renderer.
//
// RenderProcessImpl implements this interface for the regular browser.
// MockRenderProcess implements this interface for certain tests, especially
// ones derived from RenderViewTest.
class RenderProcess : public ChildProcess {
public:
RenderProcess() {}
virtual ~RenderProcess() {}
// Get a canvas suitable for drawing and transporting to the browser
// memory: (output) the transport DIB memory
// rect: the rectangle which will be painted, use for sizing the canvas
// returns: NULL on error
//
// When no longer needed, you should pass the TransportDIB to
// ReleaseTransportDIB so that it can be recycled.
virtual SkCanvas* GetDrawingCanvas(TransportDIB** memory,
const gfx::Rect& rect) = 0;
// Frees shared memory allocated by AllocSharedMemory. You should only use
// this function to free the SharedMemory object.
virtual void ReleaseTransportDIB(TransportDIB* memory) = 0;
// Returns true if plugisn should be loaded in-process.
virtual bool UseInProcessPlugins() const = 0;
// Keep track of the cumulative set of enabled bindings for this process,
// across any view.
virtual void AddBindings(int bindings) = 0;
// The cumulative set of enabled bindings for this process.
virtual int GetEnabledBindings() const = 0;
// Create a new transport DIB of, at least, the given size. Return NULL on
// error.
virtual TransportDIB* CreateTransportDIB(size_t size) = 0;
virtual void FreeTransportDIB(TransportDIB*) = 0;
// Returns a pointer to the RenderProcess singleton instance. Assuming that
// we're actually a renderer or a renderer test, this static cast will
// be correct.
static RenderProcess* current() {
return static_cast<RenderProcess*>(ChildProcess::current());
}
private:
DISALLOW_COPY_AND_ASSIGN(RenderProcess);
};
} // namespace content
#endif // CONTENT_RENDERER_RENDER_PROCESS_H_
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