TizenRefApp-9585 Implement wave animation

Change-Id: I1892c22c6b5a6af37dd9296a5a84a4da32b2ad7d
Signed-off-by: Eugene Kurzberg <i.kurtsberg@samsung.com>

6 files changed, 216 insertions, 11 deletions

diff --git a/voice-app/inc/Voice/FloatingView.h b/voice-app/inc/Voice/FloatingView.h
index f72b80a..ce6340c 100644
--- a/voice-app/inc/Voice/FloatingView.h
+++ b/voice-app/inc/Voice/FloatingView.h
@@ -21,6 +21,8 @@
 
 namespace Voice
 {
+	class WaveformControl;
+
 	/**
 	 * @brief Floating view.
 	 */
@@ -98,7 +100,7 @@ namespace Voice
 		Evas_Object *createSimulationButton(Evas_Object *parent);
 
 		bool m_IsFullScreen;
-		Evas_Object *m_Waveform;
+		WaveformControl *m_Waveform;
 		BgPressCallback m_OnBgPressed;
 		ButtonPressCallback m_OnButtonPressed;
 
diff --git a/voice-app/inc/Voice/WaveformControl.h b/voice-app/inc/Voice/WaveformControl.h
new file mode 100644
index 0000000..4dcb530
--- /dev/null
+++ b/voice-app/inc/Voice/WaveformControl.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 Samsung Electronics Co., Ltd
+ *
+ * Licensed under the Flora License, Version 1.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://floralicense.org/license/
+ *
+ * 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.
+ */
+
+#ifndef VOICE_WAVEFORM_CONTROL_H
+#define VOICE_WAVEFORM_CONTROL_H
+
+#include "Ui/Control.h"
+#include <cairo.h>
+
+namespace Voice
+{
+	/**
+	 * @brief Provides waveform animation.
+	 */
+	class WaveformControl : public Ui::Control
+	{
+	public:
+		WaveformControl();
+		virtual ~WaveformControl() override;
+
+	private:
+		virtual Evas_Object *onCreate(Evas_Object *parent) override;
+
+		double calcWave(double angle, double phase);
+		void drawFrame();
+		void drawWave(double phase);
+		void onResize(Evas *e, Evas_Object *obj, void *eventInfo);
+		Eina_Bool onAnimate();
+
+		Evas_Object *m_Image;
+		int m_Width;
+		int m_Height;
+		Ecore_Animator *m_Animator;
+
+		cairo_t *m_Cairo;
+		cairo_surface_t *m_Surface;
+
+		struct WaveComponent
+		{
+			double freq;
+			double ampl;
+			double param;
+			double paramDelta;
+		} m_WaveComponents[4];
+	};
+}
+
+#endif /* VOICE_WAVEFORM_CONTROL_H */
diff --git a/voice-app/res/voice/edje/VoiceLayout.h b/voice-app/res/voice/edje/VoiceLayout.h
index 531eb70..289793e 100644
--- a/voice-app/res/voice/edje/VoiceLayout.h
+++ b/voice-app/res/voice/edje/VoiceLayout.h
@@ -51,4 +51,6 @@
 
 #define SIGNAL_PROCESS_SHOW     "state,process,visible"
 
+#define SCREEN_WH               360
+
 #endif /* VOICE_LAYOUT_H */
diff --git a/voice-app/src/Voice/FeedbackView.cpp b/voice-app/src/Voice/FeedbackView.cpp
index d359eaa..2fb3884 100644
--- a/voice-app/src/Voice/FeedbackView.cpp
+++ b/voice-app/src/Voice/FeedbackView.cpp
@@ -24,8 +24,6 @@
 
 using namespace Voice;
 
-#define WINDOW_WH   Ui::getScaledValue(360)
-
 FeedbackView::FeedbackView(Model::Tts &tts)
 	: m_Tts(tts), m_Window(nullptr),
 	  m_IsWindowAutoHide(true), m_IsFeedbackAutoHide(true), m_IsFeedbackVisible(false),
@@ -132,7 +130,7 @@ Evas_Object *FeedbackView::onCreate(Evas_Object *parent)
 		m_Window = window->getEvasObject();
 		elm_win_alpha_set(m_Window, EINA_TRUE);
 		elm_win_floating_mode_set(m_Window, EINA_TRUE);
-		evas_object_resize(m_Window, WINDOW_WH, WINDOW_WH);
+		evas_object_resize(m_Window, Ui::getScaledValue(SCREEN_WH), Ui::getScaledValue(SCREEN_WH));
 	}
 
 	return layout;
diff --git a/voice-app/src/Voice/FloatingView.cpp b/voice-app/src/Voice/FloatingView.cpp
index cf61706..62b1ae3 100644
--- a/voice-app/src/Voice/FloatingView.cpp
+++ b/voice-app/src/Voice/FloatingView.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "Voice/FloatingView.h"
+#include "Voice/WaveformControl.h"
 
 #include "App/Path.h"
 #include "Ui/Scale.h"
@@ -27,7 +28,6 @@
 using namespace Ui;
 using namespace Voice;
 
-#define SCREEN_WH Ui::getScaledValue(360)
 #define BUTTON_DRAG_BOUNDARY Ui::getScaledValue(24)
 
 #define SIMULATION_KEY "simulation"
@@ -107,10 +107,9 @@ Evas_Object *FloatingView::onCreate(Evas_Object *parent)
 	elm_layout_signal_callback_add(layout, SIGNAL_CLOSED, "*",
 			makeCallback(&FloatingView::onClosed), this);
 
-	m_Waveform = elm_image_add(layout);
-	elm_image_file_set(m_Waveform, App::getResourcePath(PATH_FEEDBACK_WAVE).c_str(), nullptr);
-	elm_image_animated_set(m_Waveform, EINA_TRUE);
-	elm_object_part_content_set(layout, PART_WAVEFORM, m_Waveform);
+	m_Waveform = new WaveformControl();
+	m_Waveform->create(layout);
+	elm_object_part_content_set(layout, PART_WAVEFORM, m_Waveform->getEvasObject());
 
 	elm_object_part_content_set(layout, PART_SIMULATION_BUTTON, createSimulationButton(layout));
 
@@ -130,7 +129,7 @@ void FloatingView::shrinkWindow()
 
 void FloatingView::expandWindow()
 {
-	evas_object_geometry_set(getWindow(), 0, 0, SCREEN_WH, SCREEN_WH);
+	evas_object_geometry_set(getWindow(), 0, 0, Ui::getScaledValue(SCREEN_WH), Ui::getScaledValue(SCREEN_WH));
 	elm_layout_signal_emit(getEvasObject(), SIGNAL_FULL_SCREEN, "");
 	elm_layout_signal_emit(getEvasObject(), SIGNAL_BG_ENABLE, "");
 }
@@ -152,7 +151,7 @@ void FloatingView::onButtonDrag(Evas_Object *obj, const char *emission, const ch
 	x += winX;
 	y += winY;
 
-	static int radius = SCREEN_WH / 2;
+	static int radius = Ui::getScaledValue(SCREEN_WH / 2);
 	static int boundary = pow(radius - BUTTON_DRAG_BOUNDARY, 2);
 	if (pow(abs(radius - x), 2) + pow(abs(radius - y), 2) > boundary) {
 		return;
diff --git a/voice-app/src/Voice/WaveformControl.cpp b/voice-app/src/Voice/WaveformControl.cpp
new file mode 100644
index 0000000..b1d680c
--- /dev/null
+++ b/voice-app/src/Voice/WaveformControl.cpp
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2017 Samsung Electronics Co., Ltd
+ *
+ * Licensed under the Flora License, Version 1.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://floralicense.org/license/
+ *
+ * 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 "Voice/WaveformControl.h"
+#include "Ui/Scale.h"
+#include "Utils/Callback.h"
+
+#include "VoiceLayout.h"
+
+#define WAVE_OFFSET     15
+#define WAVE_MAX_AMPL   10
+#define WAVE_WIDTH      2.0
+#define WAVE_COLOR      0.15, 0.47, 0.56, 1.0
+
+using namespace Voice;
+
+WaveformControl::WaveformControl()
+	: m_Image(nullptr), m_Width(0), m_Height(0), m_Animator(nullptr),
+	  m_Cairo(nullptr), m_Surface(nullptr),
+	  m_WaveComponents{
+		{ 7, 0.2, 0.0, 0.0 },
+		{ 8, 0.3, 0.0, 0.1 },
+		{ 11, 0.25, 0.0, 0.1 },
+		{ 14, 0.25, 0.0, 0.0 } }
+{
+}
+
+WaveformControl::~WaveformControl()
+{
+	ecore_animator_del(m_Animator);
+	cairo_destroy(m_Cairo);
+	cairo_surface_destroy(m_Surface);
+}
+
+Evas_Object *WaveformControl::onCreate(Evas_Object *parent)
+{
+	Evas_Object *layout = elm_layout_add(parent);
+	elm_layout_theme_set(layout, "layout", "application", "default");
+
+	m_Image = evas_object_image_add(evas_object_evas_get(layout));
+	evas_object_image_colorspace_set(m_Image, EVAS_COLORSPACE_ARGB8888);
+	evas_object_event_callback_add(m_Image, EVAS_CALLBACK_RESIZE,
+			makeCallback(&WaveformControl::onResize), this);
+	elm_object_content_set(layout, m_Image);
+
+	/* FIXME: Creating animator right away causes crash for unknown reason */
+	ecore_job_add([](void *data) {
+		auto control = (WaveformControl *) data;
+		control->m_Animator = ecore_animator_add(makeCallback(&WaveformControl::onAnimate), control);
+	}, this);
+	return layout;
+}
+
+double WaveformControl::calcWave(double angle, double phase)
+{
+	double wave = 0.0;
+	for (auto &&component : m_WaveComponents) {
+		wave += sin(component.param + angle * component.freq + phase) * component.ampl;
+	}
+	return wave;
+}
+
+void WaveformControl::drawFrame()
+{
+	cairo_save(m_Cairo);
+	cairo_set_operator(m_Cairo, CAIRO_OPERATOR_CLEAR);
+	cairo_paint(m_Cairo);
+	cairo_restore(m_Cairo);
+
+	drawWave(0.0);
+	drawWave(M_PI_2);
+
+	for (auto &&component : m_WaveComponents) {
+		component.param += component.paramDelta;
+		if (component.param > 2 * M_PI) {
+			component.param -= 2 * M_PI;
+		}
+	}
+
+	evas_object_image_data_set(m_Image, cairo_image_surface_get_data(m_Surface));
+	evas_object_image_data_update_add(m_Image, 0, 0, m_Width, m_Height);
+}
+
+void WaveformControl::drawWave(double phase)
+{
+	static int screenSize = Ui::getScaledValue(SCREEN_WH);
+
+	double scale = (double) m_Width / screenSize;
+	cairo_set_line_width(m_Cairo, WAVE_WIDTH * scale);
+
+	for (int i = 0; i <= 360; i += 2) {
+		double angle = i * (M_PI / 180);
+		double offset = calcWave(angle, phase) * WAVE_MAX_AMPL - WAVE_OFFSET;
+		double radius = m_Width / 2.0 + offset * scale;
+
+		double x = m_Width / 2.0 + radius * cos(angle);
+		double y = m_Height / 2.0 - radius * sin(angle);
+		cairo_line_to(m_Cairo, x, y);
+	}
+	cairo_close_path(m_Cairo);
+	cairo_stroke(m_Cairo);
+}
+
+void WaveformControl::onResize(Evas *e, Evas_Object *obj, void *eventInfo)
+{
+	evas_object_geometry_get(m_Image, nullptr, nullptr, &m_Width, &m_Height);
+	if (!m_Width || !m_Height) {
+		return;
+	}
+
+	evas_object_image_size_set(m_Image, m_Width, m_Height);
+	evas_object_image_fill_set(m_Image, 0, 0, m_Width, m_Height);
+
+	if (m_Surface) {
+		cairo_destroy(m_Cairo);
+		cairo_surface_destroy(m_Surface);
+	}
+
+	m_Surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, m_Width, m_Height);
+	m_Cairo = cairo_create(m_Surface);
+	cairo_set_source_rgba(m_Cairo, WAVE_COLOR);
+
+	drawFrame();
+}
+
+Eina_Bool WaveformControl::onAnimate()
+{
+	drawFrame();
+	return ECORE_CALLBACK_RENEW;
+}