/*
* Copyright (C) 2011 Skia
*
* 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 <jni.h>
#include "SkCanvas.h"
#include "GraphicsJNI.h"
#include "SkEvent.h"
#include "SkWindow.h"
#include "SkApplication.h"
#include "utils/android/AndroidKeyToSkKey.h"
///////////////////////////////////////////
///////////////// Globals /////////////////
///////////////////////////////////////////
struct ActivityGlue {
JNIEnv* m_env;
jweak m_obj;
jmethodID m_setTitle;
ActivityGlue() {
m_env = NULL;
m_obj = NULL;
m_setTitle = NULL;
}
} gActivityGlue;
struct WindowGlue {
jweak m_obj;
jmethodID m_inval;
WindowGlue() {
m_obj = NULL;
m_inval = NULL;
}
} gWindowGlue;
SkOSWindow* gWindow;
///////////////////////////////////////////
///////////// SkOSWindow impl /////////////
///////////////////////////////////////////
void SkOSWindow::onSetTitle(const char title[])
{
if (gActivityGlue.m_env) {
JNIEnv* env = gActivityGlue.m_env;
jstring string = env->NewStringUTF(title);
env->CallVoidMethod(gActivityGlue.m_obj, gActivityGlue.m_setTitle,
string);
env->DeleteLocalRef(string);
}
}
void SkOSWindow::onHandleInval(const SkIRect& rect)
{
if (!gActivityGlue.m_env || !gWindowGlue.m_inval || !gWindowGlue.m_obj) {
return;
}
gActivityGlue.m_env->CallVoidMethod(gWindowGlue.m_obj, gWindowGlue.m_inval,
rect.fLeft, rect.fTop, rect.fRight, rect.fBottom);
}
///////////////////////////////////////////
/////////////// SkEvent impl //////////////
///////////////////////////////////////////
void SkEvent::SignalQueueTimer(SkMSec) {}
void SkEvent::SignalNonEmptyQueue() {}
///////////////////////////////////////////
////////////////// 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;
}
extern "C" {
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_drawToCanvas(
JNIEnv* env, jobject thiz, jobject jcanvas);
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_init(
JNIEnv* env, jobject thiz);
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_term(
JNIEnv* env, jobject thiz);
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_updateSize(
JNIEnv* env, jobject thiz, jint w, jint h);
JNIEXPORT bool JNICALL Java_com_skia_sampleapp_SampleApp_handleKeyDown(
JNIEnv* env, jobject thiz, jint keyCode, jint uni);
JNIEXPORT bool JNICALL Java_com_skia_sampleapp_SampleApp_handleKeyUp(
JNIEnv* env, jobject thiz, jint keyCode);
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_handleClick(
JNIEnv* env, jobject thiz, jint x, jint y, jint state);
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_createOSWindow(
JNIEnv* env, jobject thiz, jobject jsampleView);
};
JNIEXPORT bool JNICALL Java_com_skia_sampleapp_SampleApp_handleKeyDown(
JNIEnv* env, jobject thiz, jint keyCode, jint uni)
{
bool handled = gWindow->handleKey(AndroidKeycodeToSkKey(keyCode));
handled |= gWindow->handleChar((SkUnichar) uni);
return handled;
}
JNIEXPORT bool JNICALL Java_com_skia_sampleapp_SampleApp_handleKeyUp(JNIEnv* env,
jobject thiz, jint keyCode)
{
return gWindow->handleKeyUp(AndroidKeycodeToSkKey(keyCode));
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_handleClick(JNIEnv* env,
jobject thiz, jint x, jint 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);
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_updateSize(JNIEnv* env,
jobject thiz, jint w, jint h)
{
gWindow->resize(w, h);
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_createOSWindow(
JNIEnv* env, jobject thiz, jobject jsampleView)
{
gWindow = create_sk_window(NULL);
// Only using a method on View.
jclass clazz = gActivityGlue.m_env->FindClass("android/view/View");
gWindowGlue.m_obj = gActivityGlue.m_env->NewWeakGlobalRef(jsampleView);
gWindowGlue.m_inval = GetJMethod(gActivityGlue.m_env, clazz, "invalidate",
"(IIII)V");
gActivityGlue.m_env->DeleteLocalRef(clazz);
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_init(JNIEnv* env,
jobject thiz)
{
gActivityGlue.m_env = env;
// Only using a method on Activity.
jclass clazz = env->FindClass("android/app/Activity");
gActivityGlue.m_obj = env->NewWeakGlobalRef(thiz);
gActivityGlue.m_setTitle = GetJMethod(env, clazz, "setTitle",
"(Ljava/lang/CharSequence;)V");
env->DeleteLocalRef(clazz);
application_init();
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_term(JNIEnv* env,
jobject thiz)
{
application_term();
if (gWindowGlue.m_obj) {
env->DeleteWeakGlobalRef(gWindowGlue.m_obj);
gWindowGlue.m_obj = NULL;
}
if (gActivityGlue.m_obj) {
env->DeleteWeakGlobalRef(gActivityGlue.m_obj);
gActivityGlue.m_obj = NULL;
}
delete gWindow;
gWindow = NULL;
}
JNIEXPORT void JNICALL Java_com_skia_sampleapp_SampleApp_drawToCanvas(
JNIEnv* env, jobject thiz, jobject jcanvas)
{
if (!gWindow) return;
gWindow->update(NULL);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
canvas->drawBitmap(gWindow->getBitmap(), 0, 0);
}