remove SkDeviceFactory from the collective consciousness, now that devices know

how to create compatible siblings.



git-svn-id: http://skia.googlecode.com/svn/trunk@1808 2bbb7eff-a529-9590-31e7-b0007b416f81

10 files changed, 19 insertions, 314 deletions

diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index a7f01c4b3d..53c13e552e 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -52,15 +52,7 @@ class SkPicture;
 */
 class SK_API SkCanvas : public SkRefCnt {
 public:
-    /**
-        DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-
-        Construct a canvas with the given device factory.
-        @param factory  Specify the factory for generating additional devices.
-                        The factory may be null, in which case
-                        SkRasterDeviceFactory will be used.
-    */
-    explicit SkCanvas(SkDeviceFactory* factory = NULL);
+    SkCanvas();
 
     /** Construct a canvas with the specified device to draw into.  The device
         factory will be retrieved from the passed device.
@@ -106,24 +98,8 @@ public:
     SkDevice* setBitmapDevice(const SkBitmap& bitmap);
 
     /**
-     * DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-     *
-     *  Return the current device factory, or NULL. The reference count of
-     *  the returned factory is not changed.
-     */
-    SkDeviceFactory* getDeviceFactory() const { return fDeviceFactory; }
-
-    /**
-     *  DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-     *
-     *  Replace any existing factory with the specified factory, unrefing the
-     *  previous (if any), and refing the new one (if any). For convenience,
-     *  the factory parameter is also returned.
-     */
-    SkDeviceFactory* setDeviceFactory(SkDeviceFactory*);
-
-    /**
-     * Shortcut for getDevice()->createCompatibleDevice(...)
+     *  Shortcut for getDevice()->createCompatibleDevice(...).
+     *  If getDevice() == NULL, this method does nothing, and returns NULL.
      */
     SkDevice* createCompatibleDevice(SkBitmap::Config config, 
                                     int width, int height,
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index fcc28d5b9a..142748c0cd 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -30,28 +30,6 @@ class SkMatrix;
 class SkMetaData;
 class SkRegion;
 
-/** \class SkDeviceFactory
-
-    DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-
-    Devices that extend SkDevice should also provide a SkDeviceFactory class
-    to pass into SkCanvas.  Doing so will eliminate the need to extend
-    SkCanvas as well.
-*/
-class SK_API SkDeviceFactory : public SkRefCnt {
-public:
-    SkDeviceFactory();
-    virtual ~SkDeviceFactory();
-    virtual SkDevice* newDevice(SkCanvas*, SkBitmap::Config, int width,
-                                int height, bool isOpaque, bool isLayer) = 0;
-};
-
-class SkRasterDeviceFactory : public SkDeviceFactory {
-public:
-    virtual SkDevice* newDevice(SkCanvas*, SkBitmap::Config, int width,
-                                int height, bool isOpaque, bool isLayer);
-};
-
 class SK_API SkDevice : public SkRefCnt {
 public:
 //    SkDevice();
@@ -81,15 +59,6 @@ public:
     virtual ~SkDevice();
 
     /**
-     *  DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-     *
-     *  Return the factory that will create this subclass of SkDevice.
-     *  The returned factory is cached by the device, and so its reference count
-     *  is not changed by this call.
-     */
-    SkDeviceFactory* getDeviceFactory();
-
-    /**
      *  Creates a device that is of the same type as this device (e.g. SW-raster,
      *  GPU, or PDF). The backing store for this device is created automatically
      *  (e.g. offscreen pixels or FBO or whatever is appropriate).
@@ -282,17 +251,6 @@ public:
     virtual bool filterTextFlags(const SkPaint& paint, TextFlags*);
 
 protected:
-    /**
-     *  DEPRECATED: Will be replaced by SkDevice::createCompatibleDevice
-     *
-     *  subclasses can override this to return a new (or ref'd) instance of
-     *  a device factory that will create this subclass of device. This value
-     *  is cached, so it should get called at most once for a given instance.
-     *
-     *  If not overriden then createCompatibleDevice will be used by canvas.
-     */
-    virtual SkDeviceFactory* onNewDeviceFactory();
-
     /** Update as needed the pixel value in the bitmap, so that the caller can access
         the pixels directly. Note: only the pixels field should be altered. The config/width/height/rowbytes
         must remain unchanged.
@@ -330,8 +288,6 @@ private:
     SkBitmap    fBitmap;
     SkIPoint    fOrigin;
     SkMetaData* fMetaData;
-
-    SkDeviceFactory* fCachedDeviceFactory;
 };
 
 #endif
diff --git a/include/core/SkScalerContext.h b/include/core/SkScalerContext.h
index f1898ebb0d..dc8a7587a0 100644
--- a/include/core/SkScalerContext.h
+++ b/include/core/SkScalerContext.h
@@ -168,10 +168,12 @@ public:
         kDevKernText_Flag   = 0x02,
         kGammaForBlack_Flag = 0x04, // illegal to set both Gamma flags
         kGammaForWhite_Flag = 0x08, // illegal to set both Gamma flags
+
         // together, these two flags resulting in a two bit value which matches
         // up with the SkPaint::Hinting enum.
         kHintingBit1_Flag   = 0x10,
         kHintingBit2_Flag   = 0x20,
+
         kEmbeddedBitmapText_Flag = 0x40,
         kEmbolden_Flag      = 0x80,
         kSubpixelPositioning_Flag = 0x100,
diff --git a/include/gpu/SkGpuDeviceFactory.h b/include/gpu/SkGpuDeviceFactory.h
deleted file mode 100644
index 6f62ad6f9d..0000000000
--- a/include/gpu/SkGpuDeviceFactory.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
-    Copyright 2010 Google Inc.
-
-    Licensed under the Apache License, Version 2.0 (the "License");
-    you may not use this file except in compliance with the License.
-    You may obtain a copy of the License at
-
-         http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
- */
-
-#ifndef SkGpuDeviceFactory_DEFINED
-#define SkGpuDeviceFactory_DEFINED
-
-#include "SkDevice.h"
-
-class GrContext;
-
-class SK_API SkGpuDeviceFactory : public SkDeviceFactory {
-public:
-    /**
-     *  The constructor will ref() the context, passing it to each device
-     *  that it creates. It will be unref()'d in the destructor
-     *  Non-layered devices created by the factory will draw to the
-     *  rootRenderTarget. rootRenderTarget is ref-counted by the factory.
-     *  SkGpuDevice::Current3DApiRenderTarget() can be passed as a special
-     *  value that will cause the factory to create a render target object
-     *  that reflects the state of the underlying 3D API at the time of
-     *  construction.
-     */
-    SkGpuDeviceFactory(GrContext*, GrRenderTarget* rootRenderTarget);
-    
-    /**
-     * When the root layer is both a GrRenderTarget and a GrTexture it
-     * is handy to have the factory hang on to a ref to the GrTexture object.
-     * This is because the GrTexture has a ref to the GrRenderTarget but not
-     * vice-versa.
-     */
-    SkGpuDeviceFactory(GrContext*, GrTexture* rootRenderTargetTexture);
-
-    virtual ~SkGpuDeviceFactory();
-
-    virtual SkDevice* newDevice(SkCanvas*, SkBitmap::Config, int width,
-                                int height, bool isOpaque, bool isLayer);
-
-private:
-    GrContext* fContext;
-    GrRenderTarget* fRootRenderTarget;
-    GrTexture* fRootTexture;
-};
-
-#endif
-
diff --git a/include/pdf/SkPDFDevice.h b/include/pdf/SkPDFDevice.h
index afe0ffff80..a5abcfcc50 100644
--- a/include/pdf/SkPDFDevice.h
+++ b/include/pdf/SkPDFDevice.h
@@ -39,12 +39,6 @@ class SkPDFStream;
 struct ContentEntry;
 struct GraphicStateEntry;
 
-class SkPDFDeviceFactory : public SkDeviceFactory {
-public:
-    virtual SkDevice* newDevice(SkCanvas*, SkBitmap::Config, int width,
-                                int height, bool isOpaque, bool isForLayer);
-};
-
 /** \class SkPDFDevice
 
     The drawing context for the PDF backend.
@@ -65,7 +59,7 @@ public:
      *         a scale+translate transform to move the origin from the
      *         bottom left (PDF default) to the top left.  Note2: drawDevice
      *         (used by layer restore) draws the device after this initial
-     *         transform is applied, so the PDF device factory does an
+     *         transform is applied, so the PDF device does an
      *         inverse scale+translate to accommodate the one that SkPDFDevice
      *         always does.
      */
@@ -150,12 +144,7 @@ public:
         return fInitialTransform;
     }
 
-protected:
-    // override
-    virtual SkDeviceFactory* onNewDeviceFactory();
-
 private:
-    friend class SkPDFDeviceFactory;
     // TODO(vandebo) push most of SkPDFDevice's state into a core object in
     // order to get the right access levels without using friend.
     friend class ScopedContentEntry;
@@ -175,7 +164,6 @@ private:
     SkTScopedPtr<ContentEntry> fContentEntries;
     ContentEntry* fLastContentEntry;
 
-    // For use by the DeviceFactory.
     SkPDFDevice(const SkISize& layerSize, const SkClipStack& existingClipStack,
                 const SkRegion& existingClipRegion);
 
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index d5a2d1559c..3c17351afd 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -419,17 +419,10 @@ SkDevice* SkCanvas::init(SkDevice* device) {
     return this->setDevice(device);
 }
 
-SkCanvas::SkCanvas(SkDeviceFactory* factory)
-        : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
+SkCanvas::SkCanvas()
+: fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
     inc_canvas();
-
-    if (factory) {
-        factory->ref();
-    } else {
-        factory = SkNEW(SkRasterDeviceFactory);
-    }
-    fDeviceFactory = factory;
-
+    
     this->init(NULL);
 }
 
@@ -437,9 +430,6 @@ SkCanvas::SkCanvas(SkDevice* device)
         : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
     inc_canvas();
 
-    fDeviceFactory = device->getDeviceFactory();
-    SkSafeRef(fDeviceFactory);
-
     this->init(device);
 }
 
@@ -447,11 +437,7 @@ SkCanvas::SkCanvas(const SkBitmap& bitmap)
         : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
     inc_canvas();
 
-    SkDevice* device = SkNEW_ARGS(SkDevice, (bitmap));
-    fDeviceFactory = device->getDeviceFactory();
-    SkSafeRef(fDeviceFactory);
-
-    this->init(device)->unref();
+    this->init(SkNEW_ARGS(SkDevice, (bitmap)))->unref();
 }
 
 SkCanvas::~SkCanvas() {
@@ -460,7 +446,6 @@ SkCanvas::~SkCanvas() {
     this->internalRestore();    // restore the last, since we're going away
 
     SkSafeUnref(fBounder);
-    SkSafeUnref(fDeviceFactory);
 
     dec_canvas();
 }
@@ -508,10 +493,6 @@ SkDevice* SkCanvas::setDevice(SkDevice* device) {
        things like lock/unlock their pixels, etc.
     */
     if (device) {
-        // To mirror our (SkDevice*) constructor, we grab the factory from the
-        // new device
-        this->setDeviceFactory(device->getDeviceFactory());
-
         device->lockPixels();
     }
     if (rootDevice) {
@@ -573,11 +554,6 @@ bool SkCanvas::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) {
     return device->readPixels(srcRect, bitmap);
 }
 
-SkDeviceFactory* SkCanvas::setDeviceFactory(SkDeviceFactory* factory) {
-    SkRefCnt_SafeAssign(fDeviceFactory, factory);
-    return factory;
-}
-
 //////////////////////////////////////////////////////////////////////////////
 
 bool SkCanvas::readPixels(SkBitmap* bitmap) {
@@ -1185,13 +1161,12 @@ void SkCanvas::setExternalMatrix(const SkMatrix* matrix) {
 SkDevice* SkCanvas::createLayerDevice(SkBitmap::Config config,
                                       int width, int height,
                                       bool isOpaque) {
-    if (fDeviceFactory) {
-        return fDeviceFactory->newDevice(this, config, width, height,
-                                         isOpaque, true);
+    SkDevice* device = this->getDevice();
+    if (device) {
+        return device->createCompatibleDeviceForSaveLayer(config, width, height,
+                                                          isOpaque);
     } else {
-        return this->getDevice()->createCompatibleDeviceForSaveLayer(
-                                config, width, height,
-                                isOpaque);
+        return NULL;
     }
 }
 
@@ -1200,8 +1175,7 @@ SkDevice* SkCanvas::createCompatibleDevice(SkBitmap::Config config,
                                            bool isOpaque) {
     SkDevice* device = this->getDevice();
     if (device) {
-        return device->createCompatibleDevice(config, width, height,
-                                              isOpaque);
+        return device->createCompatibleDevice(config, width, height, isOpaque);
     } else {
         return NULL;
     }
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index ae283b04ef..78b2dcc2ef 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -3,45 +3,16 @@
 #include "SkMetaData.h"
 #include "SkRect.h"
 
-//#define TRACE_FACTORY_LIFETIME
-
-#ifdef TRACE_FACTORY_LIFETIME
-    static int gFactoryCounter;
-#endif
-
-SkDeviceFactory::SkDeviceFactory() {
-#ifdef TRACE_FACTORY_LIFETIME
-    SkDebugf("+++ factory index %d\n", gFactoryCounter);
-    ++gFactoryCounter;
-#endif
-}
-
-SkDeviceFactory::~SkDeviceFactory() {
-#ifdef TRACE_FACTORY_LIFETIME
-    --gFactoryCounter;
-    SkDebugf("--- factory index %d\n", gFactoryCounter);
-#endif
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
-#if 0
-SkDevice::SkDevice() : fMetaData(NULL) {
-    fOrigin.setZero();
-    fCachedDeviceFactory = NULL;
-}
-#endif
-
 SkDevice::SkDevice(const SkBitmap& bitmap) : fBitmap(bitmap) {
     fOrigin.setZero();
     fMetaData = NULL;
-    fCachedDeviceFactory = NULL;
 }
 
 SkDevice::SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque) {
     fOrigin.setZero();
     fMetaData = NULL;
-    fCachedDeviceFactory = NULL;
 
     fBitmap.setConfig(config, width, height);
     fBitmap.allocPixels();
@@ -53,18 +24,6 @@ SkDevice::SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque
 
 SkDevice::~SkDevice() {
     delete fMetaData;
-    SkSafeUnref(fCachedDeviceFactory);
-}
-
-SkDeviceFactory* SkDevice::onNewDeviceFactory() {
-    return NULL;
-}
-
-SkDeviceFactory* SkDevice::getDeviceFactory() {
-    if (NULL == fCachedDeviceFactory) {
-        fCachedDeviceFactory = this->onNewDeviceFactory();
-    }
-    return fCachedDeviceFactory;
 }
 
 SkDevice* SkDevice::createCompatibleDevice(SkBitmap::Config config, 
@@ -278,19 +237,3 @@ bool SkDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) {
     return false;
 }
 
-///////////////////////////////////////////////////////////////////////////////
-
-SkDevice* SkRasterDeviceFactory::newDevice(SkCanvas*,
-                                           SkBitmap::Config config, int width,
-                                           int height, bool isOpaque,
-                                           bool isForLayer) {
-    if (isForLayer) {
-        return SkNEW_ARGS(SkDevice, (config, width, height, isOpaque));
-    } else {
-        // should we ever get here?
-        SkBitmap bitmap;
-        bitmap.setConfig(config, width, height);
-        bitmap.setIsOpaque(isOpaque);
-        return SkNEW_ARGS(SkDevice, (bitmap));
-    }
-}
diff --git a/src/gpu/SkGpuCanvas.cpp b/src/gpu/SkGpuCanvas.cpp
index 08cbb32a05..a3bbea82a3 100644
--- a/src/gpu/SkGpuCanvas.cpp
+++ b/src/gpu/SkGpuCanvas.cpp
@@ -19,18 +19,15 @@
 
 #include "SkGpuCanvas.h"
 #include "SkGpuDevice.h"
-#include "SkGpuDeviceFactory.h"
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkGpuCanvas::SkGpuCanvas(GrContext* context, GrRenderTarget* renderTarget) {
-    SkDeviceFactory* factory = SkNEW_ARGS(SkGpuDeviceFactory,
-                                          (context, renderTarget));
-    this->setDeviceFactory(factory)->unref();
-
     SkASSERT(context);
     fContext = context;
     fContext->ref();
+
+    this->setDevice(new SkGpuDevice(context, renderTarget))->unref();
 }
 
 SkGpuCanvas::~SkGpuCanvas() {
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index a49e079e9e..0f1872666a 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -19,7 +19,6 @@
 #include "GrTextContext.h"
 
 #include "SkGpuDevice.h"
-#include "SkGpuDeviceFactory.h"
 #include "SkGrTexturePixelRef.h"
 
 #include "SkColorFilter.h"
@@ -47,6 +46,7 @@ enum {
     kShaderTextureIdx = 0
 };
 
+
 ///////////////////////////////////////////////////////////////////////////////
 
 SkGpuDevice::SkAutoCachedTexture::
@@ -1494,58 +1494,3 @@ SkDevice* SkGpuDevice::onCreateCompatibleDevice(SkBitmap::Config config,
                                    width, height, usage));
 }
 
-
-///////////////////////////////////////////////////////////////////////////////
-
-SkGpuDeviceFactory::SkGpuDeviceFactory(GrContext* context,
-                                       GrRenderTarget* rootRenderTarget) {
-    GrAssert(NULL != context);
-    GrAssert(NULL != rootRenderTarget);
-
-    // check this now rather than passing this value to SkGpuDevice cons.
-    // we want the rt that is bound *now* in the 3D API, not the one
-    // at the time of newDevice.
-    if (SkGpuDevice::Current3DApiRenderTarget() == rootRenderTarget) {
-        fRootRenderTarget = context->createRenderTargetFrom3DApiState();
-    } else {
-        fRootRenderTarget = rootRenderTarget;
-        rootRenderTarget->ref();
-    }
-
-    fContext = context;
-    context->ref();
-
-    fRootTexture = NULL;
-}
-
-SkGpuDeviceFactory::SkGpuDeviceFactory(GrContext* context, GrTexture* rootRenderTargetTexture) {
-    GrAssert(NULL != context);
-    GrAssert(NULL != rootRenderTargetTexture);
-    GrAssert(NULL != rootRenderTargetTexture->asRenderTarget());
-
-    fRootTexture = rootRenderTargetTexture;
-    rootRenderTargetTexture->ref();
-
-    fRootRenderTarget = rootRenderTargetTexture->asRenderTarget();
-    fRootRenderTarget->ref();
-
-    fContext = context;
-    context->ref();
-}
-
-SkGpuDeviceFactory::~SkGpuDeviceFactory() {
-    fContext->unref();
-    fRootRenderTarget->unref();
-    GrSafeUnref(fRootTexture);
-}
-
-SkDevice* SkGpuDeviceFactory::newDevice(SkCanvas*, SkBitmap::Config config,
-                                        int width, int height,
-                                        bool isOpaque, bool isLayer) {
-    if (isLayer) {
-        return SkNEW_ARGS(SkGpuDevice, (fContext, config, width, height));
-    } else {
-        return SkNEW_ARGS(SkGpuDevice, (fContext, fRootRenderTarget));
-    }
-}
-
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 0da237d3d2..3eb2ee8277 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -487,20 +487,6 @@ private:
 
 ////////////////////////////////////////////////////////////////////////////////
 
-SkDevice* SkPDFDeviceFactory::newDevice(SkCanvas* c, SkBitmap::Config config,
-                                        int width, int height, bool isOpaque,
-                                        bool isForLayer) {
-    SkMatrix initialTransform;
-    initialTransform.reset();
-    SkISize size = SkISize::Make(width, height);
-    if (isForLayer) {
-        return SkNEW_ARGS(SkPDFDevice, (size, c->getTotalClipStack(),
-                                        c->getTotalClip()));
-    } else {
-        return SkNEW_ARGS(SkPDFDevice, (size, size, initialTransform));
-    }
-}
-
 static inline SkBitmap makeContentBitmap(const SkISize& contentSize,
                                          const SkMatrix* initialTransform) {
     SkBitmap bitmap;
@@ -565,10 +551,6 @@ void SkPDFDevice::init() {
     fLastContentEntry = NULL;
 }
 
-SkDeviceFactory* SkPDFDevice::onNewDeviceFactory() {
-    return SkNEW(SkPDFDeviceFactory);
-}
-
 void SkPDFDevice::cleanUp() {
     fGraphicStateResources.unrefAll();
     fXObjectResources.unrefAll();