162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav/* 262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * Copyright (C) 2014 The Android Open Source Project 362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * 462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * Licensed under the Apache License, Version 2.0 (the "License"); 562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * you may not use this file except in compliance with the License. 662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * You may obtain a copy of the License at 762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * 862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * http://www.apache.org/licenses/LICENSE-2.0 962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * 1062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * Unless required by applicable law or agreed to in writing, software 1162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * distributed under the License is distributed on an "AS IS" BASIS, 1262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * See the License for the specific language governing permissions and 1462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav * limitations under the License. 1562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav */ 16121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn#define LOG_TAG "PdfEditor" 17121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn 18121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn#include <sys/types.h> 19121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn#include <unistd.h> 20121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn 21121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn#include <vector> 22121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn 2396bf5985d5a360568832fd26b6d5b44236c9343eMark Salyzyn#include <log/log.h> 24121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn#include <utils/Log.h> 2562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 2612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann#include "PdfUtils.h" 2712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann 2862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav#include "jni.h" 292279b2534272282a5b5152723235da397e49195cSteven Moreland#include <nativehelper/JNIHelp.h> 30f4e341d99c4c29cb6cc7380829a316cf4847f3dfAndreas Gampe 31f4e341d99c4c29cb6cc7380829a316cf4847f3dfAndreas Gampe#pragma GCC diagnostic push 32f4e341d99c4c29cb6cc7380829a316cf4847f3dfAndreas Gampe#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor" 3362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav#include "fpdfview.h" 34fbd02886559e7ca2b619ed0d9bff76b10cdb23c3Svet Ganov#include "fpdf_edit.h" 35fbd02886559e7ca2b619ed0d9bff76b10cdb23c3Svet Ganov#include "fpdf_save.h" 36bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav#include "fpdf_transformpage.h" 37f4e341d99c4c29cb6cc7380829a316cf4847f3dfAndreas Gampe#pragma GCC diagnostic pop 38f4e341d99c4c29cb6cc7380829a316cf4847f3dfAndreas Gampe 39bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav#include "SkMatrix.h" 4062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 41ed6b9dff563c5e22f040ff37e12c0d771e0478aeAndreas Gampe#include <core_jni_helpers.h> 4262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 4362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavnamespace android { 4462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 45bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavenum PageBox {PAGE_BOX_MEDIA, PAGE_BOX_CROP}; 46bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 47bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic struct { 48bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID x; 49bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID y; 50bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} gPointClassInfo; 51bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 52bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic struct { 53bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID left; 54bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID top; 55bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID right; 56bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jfieldID bottom; 57bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} gRectClassInfo; 58bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 5962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavstatic jint nativeRemovePage(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex) { 6062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 6112328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann 6262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav FPDFPage_Delete(document, pageIndex); 6312328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE_WITH_RET_CODE(env, -1) 6412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann 6512328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann int pageCount = FPDF_GetPageCount(document); 6612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE_WITH_RET_CODE(env, -1) 6712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann 6812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return pageCount; 6962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav} 7062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 7162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavstruct PdfToFdWriter : FPDF_FILEWRITE { 7262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav int dstFd; 7362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav}; 7462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 7562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavstatic bool writeAllBytes(const int fd, const void* buffer, const size_t byteCount) { 7662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav char* writeBuffer = static_cast<char*>(const_cast<void*>(buffer)); 7762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav size_t remainingBytes = byteCount; 7862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav while (remainingBytes > 0) { 7962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav ssize_t writtenByteCount = write(fd, writeBuffer, remainingBytes); 8062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav if (writtenByteCount == -1) { 8162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav if (errno == EINTR) { 8262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav continue; 8362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav } 84121ab7001b3d818f7e7cf3cd4a95bcb3453b44e2Mark Salyzyn ALOGE("Error writing to buffer: %d", errno); 8562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav return false; 8662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav } 8762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav remainingBytes -= writtenByteCount; 8862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav writeBuffer += writtenByteCount; 8962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav } 9062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav return true; 9162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav} 9262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 9362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavstatic int writeBlock(FPDF_FILEWRITE* owner, const void* buffer, unsigned long size) { 9462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav const PdfToFdWriter* writer = reinterpret_cast<PdfToFdWriter*>(owner); 9562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav const bool success = writeAllBytes(writer->dstFd, buffer, size); 9692ddfcfff5cec32456e2d1e0d96671f1eb0e2986Bernhard Rosenkränzer if (!success) { 9762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav ALOGE("Cannot write to file descriptor. Error:%d", errno); 9862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav return 0; 9962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav } 10062ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav return 1; 10162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav} 10262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 10362ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavstatic void nativeWrite(JNIEnv* env, jclass thiz, jlong documentPtr, jint fd) { 10462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 10562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav PdfToFdWriter writer; 10662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav writer.dstFd = fd; 10762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav writer.WriteBlock = &writeBlock; 10862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav const bool success = FPDF_SaveAsCopy(document, &writer, FPDF_NO_INCREMENTAL); 10962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav if (!success) { 11046d8444631b4b1253a76bfcc78a29d26014d022fDan Albert jniThrowExceptionFmt(env, "java/io/IOException", 11146d8444631b4b1253a76bfcc78a29d26014d022fDan Albert "cannot write to fd. Error: %d", errno); 11262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav } 11312328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env) 11462ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav} 11562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 116bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic void nativeSetTransformAndClip(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 117bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jlong transformPtr, jint clipLeft, jint clipTop, jint clipRight, jint clipBottom) { 118bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 119bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 12061a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann FPDF_PAGE* page = (FPDF_PAGE*) FPDF_LoadPage(document, pageIndex); 121bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!page) { 122bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 123bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot open page"); 124bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return; 125bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 12612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 127bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 128bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav double width = 0; 129bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav double height = 0; 130bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 131bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int result = FPDF_GetPageSizeByIndex(document, pageIndex, &width, &height); 132bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!result) { 133bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 134bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot get page size"); 135bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return; 136bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 13712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann bool isExceptionPending = forwardPdfiumError(env); 13812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann if (isExceptionPending) { 13912328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 14012328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return; 14112328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann } 142bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 14361a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann // PDF's coordinate system origin is left-bottom while in graphics it 14461a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann // is the top-left. So, translate the PDF coordinates to ours. 14561a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann SkMatrix reflectOnX = SkMatrix::MakeScale(1, -1); 14661a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann SkMatrix moveUp = SkMatrix::MakeTrans(0, FPDF_GetPageHeight(page)); 14761a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann SkMatrix coordinateChange = SkMatrix::Concat(moveUp, reflectOnX); 14861a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann 14961a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann // Apply the transformation what was created in our coordinates. 15061a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann SkMatrix matrix = SkMatrix::Concat(*reinterpret_cast<SkMatrix*>(transformPtr), 15161a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann coordinateChange); 15261a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann 15361a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann // Translate the result back to PDF coordinates. 15461a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann matrix.setConcat(coordinateChange, matrix); 155bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 156bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav SkScalar transformValues[6]; 15761a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann if (!matrix.asAffine(transformValues)) { 15812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 15912328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann 16071487eb0ceb2b7dea02649e78d99bb5952f5eaefMike Reed jniThrowException(env, "java/lang/IllegalArgumentException", 16171487eb0ceb2b7dea02649e78d99bb5952f5eaefMike Reed "transform matrix has perspective. Only affine matrices are allowed."); 16271487eb0ceb2b7dea02649e78d99bb5952f5eaefMike Reed return; 16371487eb0ceb2b7dea02649e78d99bb5952f5eaefMike Reed } 164bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 16561a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann FS_MATRIX transform = {transformValues[SkMatrix::kAScaleX], transformValues[SkMatrix::kASkewY], 16661a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann transformValues[SkMatrix::kASkewX], transformValues[SkMatrix::kAScaleY], 16761a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann transformValues[SkMatrix::kATransX], 16861a530742f70e59d7fbd7c35a22292176ca554faPhilip P. Moltmann transformValues[SkMatrix::kATransY]}; 169bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 170bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FS_RECTF clip = {(float) clipLeft, (float) clipTop, (float) clipRight, (float) clipBottom}; 171bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 172bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDFPage_TransFormWithClip(page, &transform, &clip); 17312328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann isExceptionPending = forwardPdfiumError(env); 17412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann if (isExceptionPending) { 17512328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 17612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return; 17712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann } 178bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 179bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_ClosePage(page); 18012328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 181bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 182bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 183bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic void nativeGetPageSize(JNIEnv* env, jclass thiz, jlong documentPtr, 184bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jint pageIndex, jobject outSize) { 185bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 186bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 187bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_PAGE page = FPDF_LoadPage(document, pageIndex); 188bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!page) { 189bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 190bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot open page"); 191bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return; 192bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 19312328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 194bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 195bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav double width = 0; 196bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav double height = 0; 197bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 198bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int result = FPDF_GetPageSizeByIndex(document, pageIndex, &width, &height); 199bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!result) { 200bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 201bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot get page size"); 202bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return; 203bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 20412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann bool isExceptionPending = forwardPdfiumError(env); 20512328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann if (isExceptionPending) { 20612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 20712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return; 20812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann } 209bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 210bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outSize, gPointClassInfo.x, width); 211bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outSize, gPointClassInfo.y, height); 212bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 213bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_ClosePage(page); 21412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 215bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 216bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 217bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic bool nativeGetPageBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 218bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav PageBox pageBox, jobject outBox) { 219bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 220bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 221bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_PAGE page = FPDF_LoadPage(document, pageIndex); 222bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!page) { 223bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 224bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot open page"); 225bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return false; 226bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 22712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE_WITH_RET_CODE(env, false); 228bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 229bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav float left; 230bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav float top; 231bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav float right; 232bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav float bottom; 233bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 234bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const FPDF_BOOL success = (pageBox == PAGE_BOX_MEDIA) 235bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav ? FPDFPage_GetMediaBox(page, &left, &top, &right, &bottom) 236bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav : FPDFPage_GetCropBox(page, &left, &top, &right, &bottom); 23712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann bool isExceptionPending = forwardPdfiumError(env); 23812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann if (isExceptionPending) { 23912328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 24012328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return false; 24112328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann } 242bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 243bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_ClosePage(page); 24412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE_WITH_RET_CODE(env, false); 245bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 246bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!success) { 247bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return false; 248bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 249bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 250bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outBox, gRectClassInfo.left, (int) left); 251bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outBox, gRectClassInfo.top, (int) top); 252bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outBox, gRectClassInfo.right, (int) right); 253bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav env->SetIntField(outBox, gRectClassInfo.bottom, (int) bottom); 254bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 255bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return true; 256bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 257bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 258bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic jboolean nativeGetPageMediaBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 259bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jobject outMediaBox) { 260bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const bool success = nativeGetPageBox(env, thiz, documentPtr, pageIndex, PAGE_BOX_MEDIA, 261bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav outMediaBox); 262bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return success ? JNI_TRUE : JNI_FALSE; 263bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 264bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 265bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic jboolean nativeGetPageCropBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 266bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jobject outMediaBox) { 267bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const bool success = nativeGetPageBox(env, thiz, documentPtr, pageIndex, PAGE_BOX_CROP, 268bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav outMediaBox); 269bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return success ? JNI_TRUE : JNI_FALSE; 270bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 271bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 272bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic void nativeSetPageBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 273bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav PageBox pageBox, jobject box) { 274bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr); 275bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 276bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_PAGE page = FPDF_LoadPage(document, pageIndex); 277bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (!page) { 278bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jniThrowException(env, "java/lang/IllegalStateException", 279bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav "cannot open page"); 280bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return; 281bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 28212328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 283bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 284bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int left = env->GetIntField(box, gRectClassInfo.left); 285bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int top = env->GetIntField(box, gRectClassInfo.top); 286bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int right = env->GetIntField(box, gRectClassInfo.right); 287bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav const int bottom = env->GetIntField(box, gRectClassInfo.bottom); 288bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 289bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav if (pageBox == PAGE_BOX_MEDIA) { 290bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDFPage_SetMediaBox(page, left, top, right, bottom); 291bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } else { 292bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDFPage_SetCropBox(page, left, top, right, bottom); 293bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav } 29412328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann bool isExceptionPending = forwardPdfiumError(env); 29512328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann if (isExceptionPending) { 29612328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann FPDF_ClosePage(page); 29712328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann return; 29812328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann } 299bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 300bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav FPDF_ClosePage(page); 30112328c0fd190c7baddb5f412c48005371672dc55Philip P. Moltmann HANDLE_PDFIUM_ERROR_STATE(env); 302bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 303bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 304bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic void nativeSetPageMediaBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 305bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jobject mediaBox) { 306bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav nativeSetPageBox(env, thiz, documentPtr, pageIndex, PAGE_BOX_MEDIA, mediaBox); 307bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 308bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 309bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslavstatic void nativeSetPageCropBox(JNIEnv* env, jclass thiz, jlong documentPtr, jint pageIndex, 310bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav jobject mediaBox) { 311bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav nativeSetPageBox(env, thiz, documentPtr, pageIndex, PAGE_BOX_CROP, mediaBox); 312bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav} 313bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 31476f6a86de25e1bf74717e047e55fd44b089673f3Daniel Micaystatic const JNINativeMethod gPdfEditor_Methods[] = { 31562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav {"nativeOpen", "(IJ)J", (void*) nativeOpen}, 31662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav {"nativeClose", "(J)V", (void*) nativeClose}, 31762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav {"nativeGetPageCount", "(J)I", (void*) nativeGetPageCount}, 31862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav {"nativeRemovePage", "(JI)I", (void*) nativeRemovePage}, 319bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeWrite", "(JI)V", (void*) nativeWrite}, 320bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeSetTransformAndClip", "(JIJIIII)V", (void*) nativeSetTransformAndClip}, 321bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeGetPageSize", "(JILandroid/graphics/Point;)V", (void*) nativeGetPageSize}, 322bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeScaleForPrinting", "(J)Z", (void*) nativeScaleForPrinting}, 323bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeGetPageMediaBox", "(JILandroid/graphics/Rect;)Z", (void*) nativeGetPageMediaBox}, 324bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeSetPageMediaBox", "(JILandroid/graphics/Rect;)V", (void*) nativeSetPageMediaBox}, 325bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeGetPageCropBox", "(JILandroid/graphics/Rect;)Z", (void*) nativeGetPageCropBox}, 326bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav {"nativeSetPageCropBox", "(JILandroid/graphics/Rect;)V", (void*) nativeSetPageCropBox} 32762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav}; 32862ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 32962ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslavint register_android_graphics_pdf_PdfEditor(JNIEnv* env) { 3307d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe const int result = RegisterMethodsOrDie( 33162ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav env, "android/graphics/pdf/PdfEditor", gPdfEditor_Methods, 33262ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav NELEM(gPdfEditor_Methods)); 333bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 3347d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe jclass pointClass = FindClassOrDie(env, "android/graphics/Point"); 3357d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gPointClassInfo.x = GetFieldIDOrDie(env, pointClass, "x", "I"); 3367d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gPointClassInfo.y = GetFieldIDOrDie(env, pointClass, "y", "I"); 337bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 3387d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe jclass rectClass = FindClassOrDie(env, "android/graphics/Rect"); 3397d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gRectClassInfo.left = GetFieldIDOrDie(env, rectClass, "left", "I"); 3407d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gRectClassInfo.top = GetFieldIDOrDie(env, rectClass, "top", "I"); 3417d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gRectClassInfo.right = GetFieldIDOrDie(env, rectClass, "right", "I"); 3427d13d9db1ef90063cb542ccd6554042a6a3263b7Andreas Gampe gRectClassInfo.bottom = GetFieldIDOrDie(env, rectClass, "bottom", "I"); 343bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav 344bec22beb99b279d381f720d761ca75fe3e7414dcSvetoslav return result; 34562ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav}; 34662ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav 34762ce332c141cf7bc7200c4c87d63e395874fc3ecSvetoslav}; 348