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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Window_android.h"
#include "VulkanWindowContext_android.h"
namespace sk_app {
Window* Window::CreateNativeWindow(void* platformData) {
Window_android* window = new Window_android();
if (!window->init((android_app*)platformData)) {
delete window;
return nullptr;
}
return window;
}
static void handle_cmd(struct android_app* app, int32_t cmd);
static int32_t handle_input(struct android_app* app, AInputEvent* event);
bool Window_android::init(android_app* app) {
SkASSERT(app);
mApp = app;
mApp->userData = this;
mApp->onAppCmd = handle_cmd;
mApp->onInputEvent = handle_input;
return true;
}
void Window_android::setTitle(const char* title) {
//todo
SkDebugf("Title: %s", title);
}
bool Window_android::attach(BackEndType attachType, int msaaSampleCount) {
if (kVulkan_BackendType != attachType) {
return false;
}
mSampleCount = msaaSampleCount;
// We delay the creation of fTestContext until Android informs us that
// the native window is ready to use.
return true;
}
void Window_android::initDisplay(ANativeWindow* window) {
SkASSERT(window);
ContextPlatformData_android platformData;
platformData.fNativeWindow = window;
fWindowContext = VulkanWindowContext::Create((void*)&platformData, mSampleCount);
}
static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) {
if (write(android_app->msgwrite, &cmd, sizeof(cmd)) != sizeof(cmd)) {
SkDebugf("Failure writing android_app cmd: %s\n", strerror(errno));
}
}
void Window_android::inval() {
android_app_write_cmd(mApp, APP_CMD_INVAL_WINDOW);
}
void Window_android::paintIfNeeded() {
if (mApp->window || !mContentRect.isEmpty()) {
this->onPaint();
}
}
/**
* Process the next main command.
*/
static void handle_cmd(struct android_app* app, int32_t cmd) {
Window_android* window = (Window_android*)app->userData;
switch (cmd) {
case APP_CMD_INIT_WINDOW:
// The window is being shown, get it ready.
SkASSERT(app->window);
window->initDisplay(app->window);
window->paintIfNeeded();
break;
case APP_CMD_WINDOW_RESIZED: {
int width = ANativeWindow_getWidth(app->window);
int height = ANativeWindow_getHeight(app->window);
window->onResize(width, height);
break;
}
case APP_CMD_CONTENT_RECT_CHANGED:
window->setContentRect(app->contentRect.left, app->contentRect.top,
app->contentRect.right, app->contentRect.bottom);
window->paintIfNeeded();
break;
case APP_CMD_TERM_WINDOW:
// The window is being hidden or closed, clean it up.
window->detach();
break;
case APP_CMD_INVAL_WINDOW:
window->paintIfNeeded();
break;
}
}
static Window::Key get_key(int32_t keycode) {
static const struct {
int32_t fAndroidKey;
Window::Key fWindowKey;
} gPair[] = {
{ AKEYCODE_BACK, Window::kBack_Key },
{ AKEYCODE_VOLUME_UP, Window::kLeft_Key },
{ AKEYCODE_VOLUME_DOWN, Window::kRight_Key }
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
if (gPair[i].fAndroidKey == keycode) {
return gPair[i].fWindowKey;
}
}
return Window::kNONE_Key;
}
static Window::InputState get_action(int32_t action) {
static const struct {
int32_t fAndroidAction;
Window::InputState fInputState;
} gPair[] = {
{ AKEY_STATE_DOWN, Window::kDown_InputState },
{ AKEY_STATE_UP, Window::kUp_InputState },
};
for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
if (gPair[i].fAndroidAction == action) {
return gPair[i].fInputState;
}
}
return Window::kMove_InputState;
}
static int32_t get_key_modifiers(AInputEvent* event) {
static const struct {
int32_t fAndroidState;
int32_t fWindowModifier;
} gPair[] = {
{ AMETA_SHIFT_ON, Window::kShift_ModifierKey },
{ AMETA_CTRL_ON, Window::kControl_ModifierKey },
};
int32_t metaState = AKeyEvent_getMetaState(event);
int32_t modifiers = 0;
if (AKeyEvent_getRepeatCount(event) == 0) {
modifiers |= Window::kFirstPress_ModifierKey;
}
for (size_t i = 0; i < SK_ARRAY_COUNT(gPair); i++) {
if (gPair[i].fAndroidState == metaState) {
modifiers |= gPair[i].fWindowModifier;
}
}
return modifiers;
}
/**
* Process the next input event.
*/
static int32_t handle_input(struct android_app* app, AInputEvent* event) {
Window_android* window = (Window_android*)app->userData;
switch(AInputEvent_getType(event)) {
case AINPUT_EVENT_TYPE_MOTION:
break;
case AINPUT_EVENT_TYPE_KEY:
Window::Key key = get_key(AKeyEvent_getKeyCode(event));
Window::InputState state = get_action(AKeyEvent_getAction(event));
int32_t mod = get_key_modifiers(event);
window->onKey(key, state, mod);
return true; // eat all key events
}
return 0;
}
} // namespace sk_app
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