1 files changed, 134 insertions, 0 deletions
diff --git a/libs/hwui/jni/pdf/PdfRenderer.cpp b/libs/hwui/jni/pdf/PdfRenderer.cpp
new file mode 100644
index 000000000000..cc1f96197c74
--- /dev/null
+++ b/libs/hwui/jni/pdf/PdfRenderer.cpp
@@ -0,0 +1,134 @@
+/*
+ * 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.
+ */
+
+#include "PdfUtils.h"
+
+#include "GraphicsJNI.h"
+#include "SkBitmap.h"
+#include "SkMatrix.h"
+#include "fpdfview.h"
+
+#include <vector>
+#include <utils/Log.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+namespace android {
+
+static const int RENDER_MODE_FOR_DISPLAY = 1;
+static const int RENDER_MODE_FOR_PRINT = 2;
+
+static struct {
+    jfieldID x;
+    jfieldID y;
+} gPointClassInfo;
+
+static jlong nativeOpenPageAndGetSize(JNIEnv* env, jclass thiz, jlong documentPtr,
+        jint pageIndex, jobject outSize) {
+    FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr);
+
+    FPDF_PAGE page = FPDF_LoadPage(document, pageIndex);
+    if (!page) {
+        jniThrowException(env, "java/lang/IllegalStateException",
+                "cannot load page");
+        return -1;
+    }
+
+    double width = 0;
+    double height = 0;
+
+    int result = FPDF_GetPageSizeByIndex(document, pageIndex, &width, &height);
+    if (!result) {
+        jniThrowException(env, "java/lang/IllegalStateException",
+                    "cannot get page size");
+        return -1;
+    }
+
+    env->SetIntField(outSize, gPointClassInfo.x, width);
+    env->SetIntField(outSize, gPointClassInfo.y, height);
+
+    return reinterpret_cast<jlong>(page);
+}
+
+static void nativeClosePage(JNIEnv* env, jclass thiz, jlong pagePtr) {
+    FPDF_PAGE page = reinterpret_cast<FPDF_PAGE>(pagePtr);
+    FPDF_ClosePage(page);
+}
+
+static void nativeRenderPage(JNIEnv* env, jclass thiz, jlong documentPtr, jlong pagePtr,
+        jlong bitmapPtr, jint clipLeft, jint clipTop, jint clipRight, jint clipBottom,
+        jlong transformPtr, jint renderMode) {
+    FPDF_PAGE page = reinterpret_cast<FPDF_PAGE>(pagePtr);
+
+    SkBitmap skBitmap;
+    bitmap::toBitmap(bitmapPtr).getSkBitmap(&skBitmap);
+
+    const int stride = skBitmap.width() * 4;
+
+    FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(skBitmap.width(), skBitmap.height(),
+            FPDFBitmap_BGRA, skBitmap.getPixels(), stride);
+
+    int renderFlags = FPDF_REVERSE_BYTE_ORDER;
+    if (renderMode == RENDER_MODE_FOR_DISPLAY) {
+        renderFlags |= FPDF_LCD_TEXT;
+    } else if (renderMode == RENDER_MODE_FOR_PRINT) {
+        renderFlags |= FPDF_PRINTING;
+    }
+
+    SkMatrix matrix = *reinterpret_cast<SkMatrix*>(transformPtr);
+    SkScalar transformValues[6];
+    if (!matrix.asAffine(transformValues)) {
+        jniThrowException(env, "java/lang/IllegalArgumentException",
+                "transform matrix has perspective. Only affine matrices are allowed.");
+        return;
+    }
+
+    FS_MATRIX transform = {transformValues[SkMatrix::kAScaleX], transformValues[SkMatrix::kASkewY],
+                           transformValues[SkMatrix::kASkewX], transformValues[SkMatrix::kAScaleY],
+                           transformValues[SkMatrix::kATransX],
+                           transformValues[SkMatrix::kATransY]};
+
+    FS_RECTF clip = {(float) clipLeft, (float) clipTop, (float) clipRight, (float) clipBottom};
+
+    FPDF_RenderPageBitmapWithMatrix(bitmap, page, &transform, &clip, renderFlags);
+
+    skBitmap.notifyPixelsChanged();
+}
+
+static const JNINativeMethod gPdfRenderer_Methods[] = {
+    {"nativeCreate", "(IJ)J", (void*) nativeOpen},
+    {"nativeClose", "(J)V", (void*) nativeClose},
+    {"nativeGetPageCount", "(J)I", (void*) nativeGetPageCount},
+    {"nativeScaleForPrinting", "(J)Z", (void*) nativeScaleForPrinting},
+    {"nativeRenderPage", "(JJJIIIIJI)V", (void*) nativeRenderPage},
+    {"nativeOpenPageAndGetSize", "(JILandroid/graphics/Point;)J", (void*) nativeOpenPageAndGetSize},
+    {"nativeClosePage", "(J)V", (void*) nativeClosePage}
+};
+
+int register_android_graphics_pdf_PdfRenderer(JNIEnv* env) {
+    int result = RegisterMethodsOrDie(
+            env, "android/graphics/pdf/PdfRenderer", gPdfRenderer_Methods,
+            NELEM(gPdfRenderer_Methods));
+
+    jclass clazz = FindClassOrDie(env, "android/graphics/Point");
+    gPointClassInfo.x = GetFieldIDOrDie(env, clazz, "x", "I");
+    gPointClassInfo.y = GetFieldIDOrDie(env, clazz, "y", "I");
+
+    return result;
+};
+
+};