Move SkGpuDevice.h to src/gpu

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/545193006

1 files changed, 208 insertions, 0 deletions

diff --git a/src/gpu/SkGpuDevice.h b/src/gpu/SkGpuDevice.h
new file mode 100644
index 0000000000..419013f4ae
--- /dev/null
+++ b/src/gpu/SkGpuDevice.h
@@ -0,0 +1,208 @@
+
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+
+#ifndef SkGpuDevice_DEFINED
+#define SkGpuDevice_DEFINED
+
+#include "SkGr.h"
+#include "SkBitmap.h"
+#include "SkDevice.h"
+#include "SkPicture.h"
+#include "SkRegion.h"
+#include "GrContext.h"
+
+struct SkDrawProcs;
+struct GrSkDrawProcs;
+
+class GrAccelData;
+struct GrCachedLayer;
+class GrTextContext;
+
+/**
+ *  Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the
+ *  canvas.
+ */
+class SK_API SkGpuDevice : public SkBaseDevice {
+public:
+    enum Flags {
+        kNeedClear_Flag = 1 << 0,  //!< Surface requires an initial clear
+        kCached_Flag    = 1 << 1,  //!< Surface is cached and needs to be unlocked when released
+        kDFFonts_Flag   = 1 << 2,  //!< Surface should render fonts using signed distance fields
+    };
+
+    /**
+     * Creates an SkGpuDevice from a GrSurface. This will fail if the surface is not a render
+     * target. The caller owns a ref on the returned device. If the surface is cached,
+     * the kCached_Flag should be specified to make the device responsible for unlocking
+     * the surface when it is released.
+     */
+    static SkGpuDevice* Create(GrSurface* surface, unsigned flags = 0);
+
+    /**
+     *  New device that will create an offscreen renderTarget based on the
+     *  ImageInfo and sampleCount. The device's storage will not
+     *  count against the GrContext's texture cache budget. The device's pixels
+     *  will be uninitialized. On failure, returns NULL.
+     */
+    static SkGpuDevice* Create(GrContext*, const SkImageInfo&, int sampleCount);
+
+    virtual ~SkGpuDevice();
+
+    GrContext* context() const { return fContext; }
+
+    virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE;
+
+    virtual SkImageInfo imageInfo() const SK_OVERRIDE {
+        return fRenderTarget ? fRenderTarget->info() : SkImageInfo::MakeUnknown();
+    }
+
+    virtual void clear(SkColor color) SK_OVERRIDE;
+    virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
+                            const SkPoint[], const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRect(const SkDraw&, const SkRect& r,
+                          const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRRect(const SkDraw&, const SkRRect& r,
+                           const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawDRRect(const SkDraw& draw, const SkRRect& outer,
+                            const SkRRect& inner, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawOval(const SkDraw&, const SkRect& oval,
+                          const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPath(const SkDraw&, const SkPath& path,
+                          const SkPaint& paint, const SkMatrix* prePathMatrix,
+                          bool pathIsMutable) SK_OVERRIDE;
+    virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
+                            const SkMatrix&, const SkPaint&) SK_OVERRIDE;
+    virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
+                                const SkRect* srcOrNull, const SkRect& dst,
+                                const SkPaint& paint,
+                                SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE;
+    virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
+                            int x, int y, const SkPaint& paint);
+    virtual void drawText(const SkDraw&, const void* text, size_t len,
+                          SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE;
+    virtual void drawPosText(const SkDraw&, const void* text, size_t len,
+                             const SkScalar pos[], SkScalar constY,
+                             int scalarsPerPos, const SkPaint&) SK_OVERRIDE;
+    virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
+                                const SkPath& path, const SkMatrix* matrix,
+                                const SkPaint&) SK_OVERRIDE;
+    virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
+                              const SkPoint verts[], const SkPoint texs[],
+                              const SkColor colors[], SkXfermode* xmode,
+                              const uint16_t indices[], int indexCount,
+                              const SkPaint&) SK_OVERRIDE;
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual bool filterTextFlags(const SkPaint&, TextFlags*) SK_OVERRIDE;
+
+    virtual void flush() SK_OVERRIDE;
+
+    virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE;
+    virtual void onDetachFromCanvas() SK_OVERRIDE;
+
+    virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
+
+    virtual bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE;
+    virtual bool filterImage(const SkImageFilter*, const SkBitmap&,
+                             const SkImageFilter::Context&,
+                             SkBitmap*, SkIPoint*) SK_OVERRIDE;
+
+    class SkAutoCachedTexture; // used internally
+
+
+protected:
+    virtual bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) SK_OVERRIDE;
+    virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE;
+
+    /**  PRIVATE / EXPERIMENTAL -- do not call */
+    virtual void EXPERIMENTAL_optimize(const SkPicture* picture) SK_OVERRIDE;
+    /**  PRIVATE / EXPERIMENTAL -- do not call */
+    virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture,
+                                          const SkMatrix*, const SkPaint*) SK_OVERRIDE;
+
+private:
+    GrContext*      fContext;
+
+    GrSkDrawProcs*  fDrawProcs;
+
+    GrClipData      fClipData;
+
+    GrTextContext*  fMainTextContext;
+    GrTextContext*  fFallbackTextContext;
+
+    // state for our render-target
+    GrRenderTarget*     fRenderTarget;
+    bool                fNeedClear;
+
+    // remove when our clients don't rely on accessBitmap()
+    SkBitmap fLegacyBitmap;
+
+    SkGpuDevice(GrSurface*, unsigned flags = 0);
+
+    virtual SkBaseDevice* onCreateDevice(const SkImageInfo&, Usage) SK_OVERRIDE;
+
+    virtual SkSurface* newSurface(const SkImageInfo&) SK_OVERRIDE;
+
+    virtual SkImageFilter::Cache* getImageFilterCache() SK_OVERRIDE;
+
+    // temporarily change the return to false, until we understand the issues with filters and persp
+    virtual bool forceConservativeRasterClip() const SK_OVERRIDE { return false; }
+
+    // sets the render target, clip, and matrix on GrContext. Use forceIdenity to override
+    // SkDraw's matrix and draw in device coords.
+    void prepareDraw(const SkDraw&, bool forceIdentity);
+
+    /**
+     * Implementation for both drawBitmap and drawBitmapRect.
+     */
+    void drawBitmapCommon(const SkDraw&,
+                          const SkBitmap& bitmap,
+                          const SkRect* srcRectPtr,
+                          const SkSize* dstSizePtr,      // ignored iff srcRectPtr == NULL
+                          const SkPaint&,
+                          SkCanvas::DrawBitmapRectFlags flags);
+
+    /**
+     * Helper functions called by drawBitmapCommon. By the time these are called the SkDraw's
+     * matrix, clip, and the device's render target has already been set on GrContext.
+     */
+
+    // The tileSize and clippedSrcRect will be valid only if true is returned.
+    bool shouldTileBitmap(const SkBitmap& bitmap,
+                          const GrTextureParams& sampler,
+                          const SkRect* srcRectPtr,
+                          int maxTileSize,
+                          int* tileSize,
+                          SkIRect* clippedSrcRect) const;
+    void internalDrawBitmap(const SkBitmap&,
+                            const SkRect&,
+                            const GrTextureParams& params,
+                            const SkPaint& paint,
+                            SkCanvas::DrawBitmapRectFlags flags,
+                            bool bicubic,
+                            bool needsTextureDomain);
+    void drawTiledBitmap(const SkBitmap& bitmap,
+                         const SkRect& srcRect,
+                         const SkIRect& clippedSrcRect,
+                         const GrTextureParams& params,
+                         const SkPaint& paint,
+                         SkCanvas::DrawBitmapRectFlags flags,
+                         int tileSize,
+                         bool bicubic);
+
+    bool drawDashLine(const SkPoint pts[2], const SkPaint& paint);
+
+    static SkPicture::AccelData::Key ComputeAccelDataKey();
+
+    typedef SkBaseDevice INHERITED;
+};
+
+#endif