Move Canvas
Change-Id: I83d557af30fc2d5c69d06eedc0f4d52ac41c4210
diff --git a/libs/hwui/Canvas.h b/libs/hwui/Canvas.h
new file mode 100644
index 0000000..f9c8620
--- /dev/null
+++ b/libs/hwui/Canvas.h
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * 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 ANDROID_GRAPHICS_CANVAS_H
+#define ANDROID_GRAPHICS_CANVAS_H
+
+#include <cutils/compiler.h>
+
+#include <SkBitmap.h>
+#include <SkCanvas.h>
+#include <SkMatrix.h>
+
+namespace android {
+
+class ANDROID_API Canvas {
+public:
+ virtual ~Canvas() {};
+
+ static Canvas* create_canvas(SkBitmap* bitmap);
+
+ /**
+ * Create a new Canvas object which delegates to an SkCanvas.
+ *
+ * @param skiaCanvas Must not be NULL. All drawing calls will be
+ * delegated to this object. This function will call ref() on the
+ * SkCanvas, and the returned Canvas will unref() it upon
+ * destruction.
+ * @return new Canvas object. Will not return NULL.
+ */
+ static Canvas* create_canvas(SkCanvas* skiaCanvas);
+
+ // TODO: enable HWUI to either create similar canvas wrapper or subclass
+ // directly from Canvas
+ //static Canvas* create_canvas(uirenderer::Renderer* renderer);
+
+ // TODO: this is a temporary affordance until all necessary logic can be
+ // moved within this interface! Further, the return value should
+ // NOT be unref'd and is valid until this canvas is destroyed or a
+ // new bitmap is set.
+ virtual SkCanvas* getSkCanvas() = 0;
+
+ virtual void setBitmap(SkBitmap* bitmap, bool copyState) = 0;
+
+ virtual bool isOpaque() = 0;
+ virtual int width() = 0;
+ virtual int height() = 0;
+
+// ----------------------------------------------------------------------------
+// Canvas state operations
+// ----------------------------------------------------------------------------
+ // Save (layer)
+ virtual int getSaveCount() const = 0;
+ virtual int save(SkCanvas::SaveFlags flags) = 0;
+ virtual void restore() = 0;
+ virtual void restoreToCount(int saveCount) = 0;
+
+ virtual int saveLayer(float left, float top, float right, float bottom,
+ const SkPaint* paint, SkCanvas::SaveFlags flags) = 0;
+ virtual int saveLayerAlpha(float left, float top, float right, float bottom,
+ int alpha, SkCanvas::SaveFlags flags) = 0;
+
+ // Matrix
+ virtual void getMatrix(SkMatrix* outMatrix) const = 0;
+ virtual void setMatrix(const SkMatrix& matrix) = 0;
+
+ virtual void concat(const SkMatrix& matrix) = 0;
+ virtual void rotate(float degrees) = 0;
+ virtual void scale(float sx, float sy) = 0;
+ virtual void skew(float sx, float sy) = 0;
+ virtual void translate(float dx, float dy) = 0;
+
+ // clip
+ virtual bool getClipBounds(SkRect* outRect) const = 0;
+ virtual bool quickRejectRect(float left, float top, float right, float bottom) const = 0;
+ virtual bool quickRejectPath(const SkPath& path) const = 0;
+
+ virtual bool clipRect(float left, float top, float right, float bottom, SkRegion::Op op) = 0;
+ virtual bool clipPath(const SkPath* path, SkRegion::Op op) = 0;
+ virtual bool clipRegion(const SkRegion* region, SkRegion::Op op) = 0;
+
+ // filters
+ virtual SkDrawFilter* getDrawFilter() = 0;
+ virtual void setDrawFilter(SkDrawFilter* drawFilter) = 0;
+
+// ----------------------------------------------------------------------------
+// Canvas draw operations
+// ----------------------------------------------------------------------------
+ virtual void drawColor(int color, SkXfermode::Mode mode) = 0;
+ virtual void drawPaint(const SkPaint& paint) = 0;
+
+ // Geometry
+ virtual void drawPoint(float x, float y, const SkPaint& paint) = 0;
+ virtual void drawPoints(const float* points, int count, const SkPaint& paint) = 0;
+ virtual void drawLine(float startX, float startY, float stopX, float stopY,
+ const SkPaint& paint) = 0;
+ virtual void drawLines(const float* points, int count, const SkPaint& paint) = 0;
+ virtual void drawRect(float left, float top, float right, float bottom,
+ const SkPaint& paint) = 0;
+ virtual void drawRoundRect(float left, float top, float right, float bottom,
+ float rx, float ry, const SkPaint& paint) = 0;
+ virtual void drawCircle(float x, float y, float radius, const SkPaint& paint) = 0;
+ virtual void drawOval(float left, float top, float right, float bottom,
+ const SkPaint& paint) = 0;
+ virtual void drawArc(float left, float top, float right, float bottom,
+ float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) = 0;
+ virtual void drawPath(const SkPath& path, const SkPaint& paint) = 0;
+ virtual void drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount,
+ const float* verts, const float* tex, const int* colors,
+ const uint16_t* indices, int indexCount, const SkPaint& paint) = 0;
+
+ // Bitmap-based
+ virtual void drawBitmap(const SkBitmap& bitmap, float left, float top,
+ const SkPaint* paint) = 0;
+ virtual void drawBitmap(const SkBitmap& bitmap, const SkMatrix& matrix,
+ const SkPaint* paint) = 0;
+ virtual void drawBitmap(const SkBitmap& bitmap, float srcLeft, float srcTop,
+ float srcRight, float srcBottom, float dstLeft, float dstTop,
+ float dstRight, float dstBottom, const SkPaint* paint) = 0;
+ virtual void drawBitmapMesh(const SkBitmap& bitmap, int meshWidth, int meshHeight,
+ const float* vertices, const int* colors, const SkPaint* paint) = 0;
+
+ // Text
+ /**
+ * drawText: count is of glyphs
+ * totalAdvance is ignored in software renderering, used by hardware renderer for
+ * text decorations (underlines, strikethroughs).
+ */
+ virtual void drawText(const uint16_t* glyphs, const float* positions, int count,
+ const SkPaint& paint, float x, float y,
+ float boundsLeft, float boundsTop, float boundsRight, float boundsBottom,
+ float totalAdvance) = 0;
+ /** drawPosText: count is of UTF16 characters, posCount is floats (2 * glyphs) */
+ virtual void drawPosText(const uint16_t* text, const float* positions, int count,
+ int posCount, const SkPaint& paint) = 0;
+ /** drawTextOnPath: count is of glyphs */
+ virtual void drawTextOnPath(const uint16_t* glyphs, int count, const SkPath& path,
+ float hOffset, float vOffset, const SkPaint& paint) = 0;
+
+ /**
+ * Specifies if the positions passed to ::drawText are absolute or relative
+ * to the (x,y) value provided.
+ *
+ * If true the (x,y) values are ignored. Otherwise, those (x,y) values need
+ * to be added to each glyph's position to get its absolute position.
+ */
+ virtual bool drawTextAbsolutePos() const = 0;
+};
+
+}; // namespace android
+#endif // ANDROID_GRAPHICS_CANVAS_H