Split GrSWMaskHelper into its own files

http://codereview.appspot.com/6350046/



git-svn-id: http://skia.googlecode.com/svn/trunk@4380 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 63 insertions, 0 deletions

diff --git a/src/gpu/GrSWMaskHelper.h b/src/gpu/GrSWMaskHelper.h
new file mode 100644
index 0000000000..b789f99131
--- /dev/null
+++ b/src/gpu/GrSWMaskHelper.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrSWMaskHelper_DEFINED
+#define GrSWMaskHelper_DEFINED
+
+#include "GrColor.h"
+#include "GrMatrix.h"
+#include "GrNoncopyable.h"
+#include "SkBitmap.h"
+#include "SkDraw.h"
+#include "SkRasterClip.h"
+#include "SkRegion.h"
+
+class GrAutoScratchTexture;
+class GrContext;
+class GrTexture;
+class SkPath;
+
+/**
+ * The GrSWMaskHelper helps generate clip masks using the software rendering
+ * path.
+ */
+class GrSWMaskHelper : public GrNoncopyable {
+public:
+    GrSWMaskHelper(GrContext* context) 
+    : fContext(context) {
+    }
+
+    void draw(const GrRect& clientRect, SkRegion::Op op, 
+              bool antiAlias, GrColor color);
+
+    void draw(const SkPath& clientPath, SkRegion::Op op, 
+              GrPathFill fill, bool antiAlias, GrColor color);
+
+    bool init(const GrIRect& pathDevBounds, 
+              const GrPoint* translate,
+              bool useMatrix);
+
+    bool getTexture(GrAutoScratchTexture* tex);
+
+    void toTexture(GrTexture* texture, bool clearToWhite);
+
+    void clear(GrColor color) {
+        fBM.eraseColor(color);
+    }
+
+protected:
+private:
+    GrContext*      fContext;
+    GrMatrix        fMatrix;
+    SkBitmap        fBM;
+    SkDraw          fDraw;
+    SkRasterClip    fRasterClip;
+
+    typedef GrNoncopyable INHERITED;
+};
+
+#endif GrSWMaskHelper_DEFINED