Revert of Remove Android SampleApp

platform_tools/android/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp

Index: platform_tools/android/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp
diff --git a/platform_tools/android/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp b/platform_tools/android/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f233a2fc394a6f1f5258990f60403ebb8a33d745
--- /dev/null
+++ b/platform_tools/android/apps/sample_app/src/main/jni/com_skia_SkiaSampleRenderer.cpp
@@ -0,0 +1,356 @@
+/*
+ * Copyright 2011 Skia
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include "com_skia_SkiaSampleRenderer.h"
+
+#include "SampleApp.h"
+#include "SkApplication.h"
+#include "SkCanvas.h"
+#include "SkDevice.h"
+#include "SkEvent.h"
+#include "SkWindow.h"
+
+#include <jni.h>
+#include "AndroidKeyToSkKey.h"
+
+
+///////////////////////////////////////////
+///////////////// Globals /////////////////
+///////////////////////////////////////////
+
+struct ActivityGlue {
+    JNIEnv* m_env;
+    jweak m_obj;
+    jmethodID m_setTitle;
+    jmethodID m_setSlideList;
+    ActivityGlue() {
+        m_env = nullptr;
+        m_obj = nullptr;
+        m_setTitle = nullptr;
+        m_setSlideList = nullptr;
+    }
+} gActivityGlue;
+
+struct WindowGlue {
+    jweak m_obj;
+    jmethodID m_inval;
+    jmethodID m_queueSkEvent;
+    jmethodID m_startTimer;
+    jmethodID m_getMSAASampleCount;
+    WindowGlue() {
+        m_obj = nullptr;
+        m_inval = nullptr;
+        m_queueSkEvent = nullptr;
+        m_startTimer = nullptr;
+        m_getMSAASampleCount = nullptr;
+    }
+} gWindowGlue;
+
+SampleWindow* gWindow;
+
+///////////////////////////////////////////
+///////////// SkOSWindow impl /////////////
+///////////////////////////////////////////
+
+SkOSWindow::SkOSWindow(void*) : fDestroyRequested(false) {
+}
+
+SkOSWindow::~SkOSWindow() {
+}
+
+bool SkOSWindow::attach(SkBackEndTypes /* attachType */, int /*msaaSampleCount*/,
+                        bool /*deepColor*/, AttachmentInfo* info)
+{
+    JNIEnv* env = gActivityGlue.m_env;
+    if (!env || !gWindowGlue.m_getMSAASampleCount || !gWindowGlue.m_obj) {
+        return false;
+    }
+    if (env->IsSameObject(gWindowGlue.m_obj, nullptr)) {
+        SkDebugf("ERROR: The JNI WeakRef to the Window is invalid");
+        return false;
+    }
+    info->fSampleCount = env->CallIntMethod(gWindowGlue.m_obj, gWindowGlue.m_getMSAASampleCount);
+
+    // This is the value requested in SkiaSampleView.java.
+    info->fStencilBits = 8;
+    return true;
+}
+
+void SkOSWindow::release() {
+}
+
+void SkOSWindow::present() {
+}
+
+void SkOSWindow::closeWindow() {
+}
+
+void SkOSWindow::setVsync(bool) {
+}
+
+void SkOSWindow::onSetTitle(const char title[])
+{
+    JNIEnv* env = gActivityGlue.m_env;
+    if (!env) {
+        return;
+    }
+    if (env->IsSameObject(gActivityGlue.m_obj, nullptr)) {
+        SkDebugf("ERROR: The JNI WeakRef to the Activity is invalid");
+        return;
+    }
+
+    jstring string = env->NewStringUTF(title);
+    env->CallVoidMethod(gActivityGlue.m_obj, gActivityGlue.m_setTitle, string);
+    env->DeleteLocalRef(string);
+}
+
+void SkOSWindow::onHandleInval(const SkIRect& rect)
+{
+    JNIEnv* env = gActivityGlue.m_env;
+    if (!env || !gWindowGlue.m_inval || !gWindowGlue.m_obj) {
+        return;
+    }
+    if (env->IsSameObject(gWindowGlue.m_obj, nullptr)) {
+        SkDebugf("ERROR: The JNI WeakRef to the Window is invalid");
+        return;
+    }
+    env->CallVoidMethod(gWindowGlue.m_obj, gWindowGlue.m_inval);
+}
+
+///////////////////////////////////////////
+/////////////// SkEvent impl //////////////
+///////////////////////////////////////////
+
+void SkEvent::SignalQueueTimer(SkMSec ms)
+{
+    JNIEnv* env = gActivityGlue.m_env;
+    if (!env || !gWindowGlue.m_startTimer || !gWindowGlue.m_obj || !ms) {
+        return;
+    }
+    if (env->IsSameObject(gWindowGlue.m_obj, nullptr)) {
+        SkDebugf("ERROR: The JNI WeakRef to the Window is invalid");
+        return;
+    }
+    env->CallVoidMethod(gWindowGlue.m_obj,
+            gWindowGlue.m_startTimer, ms);
+}
+
+void SkEvent::SignalNonEmptyQueue()
+{
+    JNIEnv* env = gActivityGlue.m_env;
+    if (!env || !gWindowGlue.m_queueSkEvent || !gWindowGlue.m_obj) {
+        return;
+    }
+    if (env->IsSameObject(gWindowGlue.m_obj, nullptr)) {
+        SkDebugf("ERROR: The JNI WeakRef to the Window is invalid");
+        return;
+    }
+    env->CallVoidMethod(gWindowGlue.m_obj, gWindowGlue.m_queueSkEvent);
+}
+
+///////////////////////////////////////////
+////////////////// JNI ////////////////////
+///////////////////////////////////////////
+
+static jmethodID GetJMethod(JNIEnv* env, jclass clazz, const char name[],
+        const char signature[])
+{
+    jmethodID m = env->GetMethodID(clazz, name, signature);
+    if (!m) SkDebugf("Could not find Java method %s\n", name);
+    return m;
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_init(JNIEnv* env,
+        jobject thiz, jobject jsampleActivity, jstring cmdLineFlags, jint msaaSampleCount)
+{
+    // setup jni hooks to the java activity
+    gActivityGlue.m_env = env;
+    jclass clazz = env->FindClass("com/skia/SkiaSampleActivity");
+    gActivityGlue.m_obj = env->NewWeakGlobalRef(jsampleActivity);
+    gActivityGlue.m_setTitle = GetJMethod(env, clazz, "setTitle", "(Ljava/lang/CharSequence;)V");
+    gActivityGlue.m_setSlideList = GetJMethod(env, clazz, "setSlideList", "([Ljava/lang/String;)V");
+    env->DeleteLocalRef(clazz);
+
+    // setup jni hooks to the java renderer
+    clazz = env->FindClass("com/skia/SkiaSampleRenderer");
+    gWindowGlue.m_obj = env->NewWeakGlobalRef(thiz);
+    gWindowGlue.m_inval = GetJMethod(env, clazz, "requestRender", "()V");
+    gWindowGlue.m_queueSkEvent = GetJMethod(env, clazz, "queueSkEvent", "()V");
+    gWindowGlue.m_startTimer = GetJMethod(env, clazz, "startTimer", "(I)V");
+    gWindowGlue.m_getMSAASampleCount = GetJMethod(env, clazz, "getMSAASampleCount", "()I");
+    env->DeleteLocalRef(clazz);
+
+    application_init();
+
+    const char* flags = env->GetStringUTFChars(cmdLineFlags, JNI_FALSE);
+    SkTArray<SkString> flagEntries;
+    SkStrSplit(flags, " ", &flagEntries);
+
+    SkTArray<const char*> args;
+    args.push_back("SampleApp");
+    for (int i = 0; i < flagEntries.count(); i++) {
+        SkDebugf(flagEntries[i].c_str());
+        args.push_back(flagEntries[i].c_str());
+    }
+
+    SkString msaaSampleCountString;
+    if (msaaSampleCount > 0) {
+        args.push_back("--msaa");
+        msaaSampleCountString.appendS32(static_cast<uint32_t>(msaaSampleCount));
+        args.push_back(msaaSampleCountString.c_str());
+    }
+
+    if (gWindow) {
+        SkDebugf("The sample window already exists.");
+    } else {
+        gWindow = new SampleWindow(nullptr, args.count(), const_cast<char**>(args.begin()), nullptr);
+    }
+
+    // cleanup the command line flags
+    env->ReleaseStringUTFChars(cmdLineFlags, flags);
+
+    // send the list of slides up to the activity
+    const int slideCount = gWindow->sampleCount();
+    jobjectArray slideList = env->NewObjectArray(slideCount, env->FindClass("java/lang/String"), env->NewStringUTF(""));
+    for (int i = 0; i < slideCount; i++) {
+        jstring slideTitle = env->NewStringUTF(gWindow->getSampleTitle(i).c_str());
+        env->SetObjectArrayElement(slideList, i, slideTitle);
+        env->DeleteLocalRef(slideTitle);
+    }
+    env->CallVoidMethod(gActivityGlue.m_obj, gActivityGlue.m_setSlideList, slideList);
+    env->DeleteLocalRef(slideList);
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_term(JNIEnv* env,
+        jobject thiz)
+{
+    delete gWindow;
+    gWindow = nullptr;
+    application_term();
+    if (gWindowGlue.m_obj) {
+        env->DeleteWeakGlobalRef(gWindowGlue.m_obj);
+        gWindowGlue.m_obj = nullptr;
+    }
+    if (gActivityGlue.m_obj) {
+        env->DeleteWeakGlobalRef(gActivityGlue.m_obj);
+        gActivityGlue.m_obj = nullptr;
+    }
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_draw(
+        JNIEnv* env, jobject thiz)
+{
+    if (!gWindow) return;
+    gWindow->update(nullptr);
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_updateSize(JNIEnv* env,
+        jobject thiz, jint w, jint h)
+{
+    gWindow->resize(w, h);
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_handleClick(JNIEnv* env,
+        jobject thiz, jint owner, jfloat x, jfloat y, jint jstate)
+{
+    SkView::Click::State state;
+    switch(jstate) {
+        case 0:     // MotionEvent.ACTION_DOWN
+            state = SkView::Click::kDown_State;
+            break;
+        case 1:     // MotionEvent.ACTION_UP
+        case 3:     // MotionEvent.ACTION_CANCEL
+            state = SkView::Click::kUp_State;
+            break;
+        case 2:     // MotionEvent.ACTION_MOVE
+            state = SkView::Click::kMoved_State;
+            break;
+        default:
+            SkDebugf("motion event ignored\n");
+            return;
+    }
+    gWindow->handleClick(x, y, state, reinterpret_cast<void*>(owner));
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_nextSample(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->nextSample();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_previousSample(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->previousSample();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_goToSample(
+        JNIEnv* env, jobject thiz, jint position)
+{
+    gWindow->goToSample(position);
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_toggleRenderingMode(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->toggleRendering();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_showOverview(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->showOverview();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_toggleSlideshow(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->toggleSlideshow();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_toggleFPS(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->toggleFPS();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_toggleTiling(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->handleChar('t');
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_toggleBBox(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->handleChar('b');
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_processSkEvent(
+        JNIEnv* env, jobject thiz)
+{
+    if (SkEvent::ProcessEvent()) {
+        SkEvent::SignalNonEmptyQueue();
+    }
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_serviceQueueTimer(
+        JNIEnv* env, jobject thiz)
+{
+    SkEvent::ServiceQueueTimer();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_saveToPDF(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->saveToPdf();
+}
+
+JNIEXPORT void JNICALL Java_com_skia_SkiaSampleRenderer_postInval(
+        JNIEnv* env, jobject thiz)
+{
+    gWindow->postInvalDelay();
+}