7 files changed, 259 insertions, 0 deletions
diff --git a/simple-visualization/qmpkeyboardwindow.cpp b/simple-visualization/qmpkeyboardwindow.cpp
new file mode 100644
index 0000000..a42a2e0
--- /dev/null
+++ b/simple-visualization/qmpkeyboardwindow.cpp
@@ -0,0 +1,36 @@
+#include <QVBoxLayout>
+#include <QCloseEvent>
+#include "qmpkeyboardwindow.hpp"
+
+qmpKeyboardWindow::qmpKeyboardWindow(qmpPluginAPI *_api,QWidget *parent):
+	QWidget(parent,Qt::Dialog),api(_api)
+{
+	setLayout(new QVBoxLayout());
+	for(int ch=0;ch<16;++ch)
+		layout()->addWidget(pw[ch]=new qmpPianoWidget(this));
+	hide();
+	api->registerEventHandlerIntf(ec=new EventCallback(),this);
+	connect(ec,&EventCallback::keystateupdated,this,&qmpKeyboardWindow::onkeystatesupdate);
+}
+qmpKeyboardWindow::~qmpKeyboardWindow()
+{
+}
+void qmpKeyboardWindow::closeEvent(QCloseEvent *event)
+{
+	api->setFuncState("Keyboard",false);
+	event->accept();
+}
+void qmpKeyboardWindow::onkeystatesupdate(int ch,int key,bool state)
+{pw[ch]->setKeyState(key,state);}
+void qmpKeyboardWindow::resetAll()
+{for(int ch=0;ch<16;++ch)pw[ch]->reset();}
+
+void EventCallback::callBack(void* callerdata,void* userdata)
+{
+	qmpKeyboardWindow *w=(qmpKeyboardWindow*)userdata;
+	SEventCallBackData *cbd=(SEventCallBackData*)callerdata;
+	if((cbd->type&0xF0)==0x80)
+		emit keystateupdated(cbd->type&0xF,cbd->p1,false);
+	if((cbd->type&0xF0)==0x90)
+		emit keystateupdated(cbd->type&0xF,cbd->p1,cbd->p2>0);
+}
diff --git a/simple-visualization/qmpkeyboardwindow.hpp b/simple-visualization/qmpkeyboardwindow.hpp
new file mode 100644
index 0000000..a99e62e
--- /dev/null
+++ b/simple-visualization/qmpkeyboardwindow.hpp
@@ -0,0 +1,36 @@
+#ifndef QMPKEYBOARDWINDOW_HPP
+#define QMPKEYBOARDWINDOW_HPP
+
+#include "../include/qmpcorepublic.hpp"
+#include "qmppianowidget.hpp"
+
+#include <QWidget>
+
+class EventCallback:public QObject,public ICallBack
+{
+	Q_OBJECT
+	public:
+		void callBack(void* callerdata,void* userdata);
+	signals:
+		void keystateupdated(int ch,int key,bool state);
+};
+
+class qmpKeyboardWindow:public QWidget
+{
+	Q_OBJECT
+	friend class EventCallback;
+	private:
+		qmpPianoWidget *pw[16];
+		qmpPluginAPI *api;
+		EventCallback *ec;
+	public:
+		qmpKeyboardWindow(qmpPluginAPI *_api,QWidget *parent);
+		~qmpKeyboardWindow();
+		void resetAll();
+	protected:
+		void closeEvent(QCloseEvent *event);
+	public slots:
+		void onkeystatesupdate(int ch,int key,bool state);
+};
+
+#endif
diff --git a/simple-visualization/qmppianowidget.cpp b/simple-visualization/qmppianowidget.cpp
new file mode 100644
index 0000000..febd90f
--- /dev/null
+++ b/simple-visualization/qmppianowidget.cpp
@@ -0,0 +1,62 @@
+#include <cstring>
+#include <QPainter>
+#include "qmppianowidget.hpp"
+
+qmpPianoWidget::qmpPianoWidget(QWidget *parent) : QWidget(parent)
+{
+	memset(keystates,0,sizeof(keystates));
+}
+void qmpPianoWidget::setKeyState(int key,bool state)
+{
+	keystates[key]=state;
+	update();
+}
+void qmpPianoWidget::reset()
+{
+	memset(keystates,0,sizeof(keystates));
+	update();
+}
+QSize qmpPianoWidget::minimumSizeHint()const
+{
+	return QSize(320,22);
+}
+
+void qmpPianoWidget::paintEvent(QPaintEvent *event)
+{
+	Q_UNUSED(event)
+	for(int i=0;i<128;++i)
+	{
+		QRectF r=getKeyRect(i);
+		paintKey(r,QColor(keystates[i]?0xff66cc:0x66ccff));
+	}
+}
+
+QRectF qmpPianoWidget::getKeyRect(int key)
+{
+	int octave=key/12;key%=12;
+	bool is_black=(key<5&&(key&1))||(key>5&&((key&1)^1));
+	double key_width=width()/75.;
+	QRectF ret(0,0,key_width,height()/2.);
+	if(!is_black)
+	{
+		ret.moveTop(height()/2.);
+		int shift=(key+(key>=5))>>1;
+		ret.moveLeft((octave*7+shift)*key_width);
+	}
+	else
+		ret.moveLeft((octave*7+(key+(key>=5))/2.)*key_width);
+	return ret;
+}
+void qmpPianoWidget::paintKey(QRectF keyrect,QColor keycolor)
+{
+	QColor bordercolor(keycolor);
+	if(keycolor.valueF()>0.5)
+		bordercolor=bordercolor.darker(150);
+	else
+		bordercolor=bordercolor.lighter(150);
+	QPainter *p=new QPainter(this);
+	p->setPen(bordercolor);
+	p->setBrush(QBrush(keycolor));
+	p->drawRect(keyrect.adjusted(1,1,-1,-1));
+	delete p;
+}
diff --git a/simple-visualization/qmppianowidget.hpp b/simple-visualization/qmppianowidget.hpp
new file mode 100644
index 0000000..22af6ce
--- /dev/null
+++ b/simple-visualization/qmppianowidget.hpp
@@ -0,0 +1,25 @@
+#ifndef QMPPIANOWIDGET_HPP
+#define QMPPIANOWIDGET_HPP
+
+#include <QWidget>
+#include <bitset>
+
+class qmpPianoWidget : public QWidget
+{
+		Q_OBJECT
+	public:
+		explicit qmpPianoWidget(QWidget *parent = nullptr);
+		void setKeyState(int key,bool state);
+		void reset();
+		QSize minimumSizeHint()const override;
+
+	protected:
+		void paintEvent(QPaintEvent *event)override;
+
+	private:
+		bool keystates[128];
+		QRectF getKeyRect(int key);
+		void paintKey(QRectF keyrect,QColor keycolor);
+};
+
+#endif // QMPPIANOWIDGET_HPP
diff --git a/simple-visualization/simple-visualization.pro b/simple-visualization/simple-visualization.pro
new file mode 100644
index 0000000..7a22769
--- /dev/null
+++ b/simple-visualization/simple-visualization.pro
@@ -0,0 +1,39 @@
+#-------------------------------------------------
+#
+# Project created by QtCreator 2019-04-08T17:50:57
+#
+#-------------------------------------------------
+
+QT       += widgets
+QT       += gui
+
+TARGET = simple-visualization
+TEMPLATE = lib
+
+DEFINES += SIMPLEVISUALIZATION_LIBRARY
+
+# The following define makes your compiler emit warnings if you use
+# any feature of Qt which has been marked as deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+# You can also make your code fail to compile if you use deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+    simplevisualization.cpp \
+    qmppianowidget.cpp \
+    qmpkeyboardwindow.cpp
+
+HEADERS += \
+    simplevisualization.hpp \
+    qmppianowidget.hpp \
+    qmpkeyboardwindow.hpp
+
+unix {
+    target.path = /usr/lib
+    INSTALLS += target
+}
diff --git a/simple-visualization/simplevisualization.cpp b/simple-visualization/simplevisualization.cpp
new file mode 100644
index 0000000..0a1de02
--- /dev/null
+++ b/simple-visualization/simplevisualization.cpp
@@ -0,0 +1,29 @@
+#include "simplevisualization.hpp"
+#include "qmpkeyboardwindow.hpp"
+
+qmpSimpleVisualization::qmpSimpleVisualization(qmpPluginAPI *_api){api=_api;}
+void qmpSimpleVisualization::show(){p->show();}
+void qmpSimpleVisualization::close(){p->close();}
+void qmpSimpleVisualization::init()
+{
+	api->registerFunctionality(this,"Keyboard","Keyboard",api->isDarkTheme()?":/img/visualization_i.svg":":/img/visualization.svg",0,true);
+	p=new qmpKeyboardWindow(api,NULL);
+	uihs=api->registerUIHook("main.stop",qmpSimpleVisualization::cbstop,(void*)this);
+}
+void qmpSimpleVisualization::deinit()
+{
+	if(!api)return;close();
+	api->unregisterFunctionality("Keyboard");
+	api->unregisterUIHook("main.stop",uihs);
+	delete p;
+}
+const char* qmpSimpleVisualization::pluginGetName()
+{return "QMidiPlayer Simple Visualization Plugin";}
+const char* qmpSimpleVisualization::pluginGetVersion()
+{return "0.8.6";}
+
+void qmpSimpleVisualization::cbstop(void*,void* usrd)
+{
+	qmpSimpleVisualization *v=(qmpSimpleVisualization*)usrd;
+	v->p->resetAll();
+}
diff --git a/simple-visualization/simplevisualization.hpp b/simple-visualization/simplevisualization.hpp
new file mode 100644
index 0000000..b3edeee
--- /dev/null
+++ b/simple-visualization/simplevisualization.hpp
@@ -0,0 +1,32 @@
+#ifndef SIMPLEVISUALIZATION_HPP
+#define SIMPLEVISUALIZATION_HPP
+
+#include "../include/qmpcorepublic.hpp"
+
+class qmpKeyboardWindow;
+class qmpSimpleVisualization:public qmpPluginIntf,public qmpFuncBaseIntf
+{
+	private:
+		qmpPluginAPI* api;
+		qmpKeyboardWindow *p;
+		int uihs;
+	public:
+		qmpSimpleVisualization(qmpPluginAPI* _api);
+		void show();
+		void close();
+		void init();
+		void deinit();
+		const char* pluginGetName();
+		const char* pluginGetVersion();
+
+		static void cbstop(void* cbd,void* usrd);
+};
+
+extern "C"{
+	EXPORTSYM qmpPluginIntf* qmpPluginGetInterface(qmpPluginAPI* api)
+	{return new qmpSimpleVisualization(api);}
+	EXPORTSYM const char* qmpPluginGetAPIRev()
+	{return QMP_PLUGIN_API_REV;}
+}
+
+#endif // SIMPLEVISUALIZATION_HPP