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Unified Diff: tools/vulkan/android/Window_android.cpp

Issue 1903253003: VulkanViewer on Android (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: gyp Created 4 years, 8 months ago
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Index: tools/vulkan/android/Window_android.cpp
diff --git a/tools/vulkan/android/Window_android.cpp b/tools/vulkan/android/Window_android.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..fb87a3f606b206bcbfd8e06507736317b2be3881
--- /dev/null
+++ b/tools/vulkan/android/Window_android.cpp
@@ -0,0 +1,179 @@
+/*
+* 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 "VulkanTestContext_android.h"
+
+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, AttachmentInfo*) {
+ 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;
+ fTestContext = VulkanTestContext::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;
+}
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