Ajout gestion de la camera avec le clic-milieu

git-svn-id: file:///var/svn/2013-gpudataviz/trunk@5 371a6b4a-a258-45f8-9dcc-bdd82ce0ac9d

2 files changed, 50 insertions, 28 deletions

diff --git a/src/gpudataviz.cc b/src/gpudataviz.cc
index eef7e5c..954ef5e 100644
--- a/src/gpudataviz.cc
+++ b/src/gpudataviz.cc
@@ -62,6 +62,7 @@ MyGTKGLSceneWidget::MyGTKGLSceneWidget(Glib::RefPtr<Gdk::GL::Config> &glconfig)
 	set_gl_capability(glconfig);
 	Gdk::EventMask mask = Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK;
 	set_events(mask); // The containing window should have those attributes too
+	this->camera.rx = this->camera.ry = 0.0f; this->camera.tz = -3.0f;
 }
 
 MyGTKGLSceneWidget::~MyGTKGLSceneWidget() { }
@@ -89,7 +90,8 @@ void MyGTKGLSceneWidget::on_realize() {
 	GLUquadricObj* qobj = gluNewQuadric();
 	gluQuadricDrawStyle(qobj, GLU_FILL);
 	glNewList(1, GL_COMPILE);
-	gluSphere(qobj, 1.0, 20, 20);
+	//gluSphere(qobj, 1.0, 20, 20);
+	gluSphere(qobj, 1.0, 5, 5);
 	glEndList();
 
 	// Setup scene envrionnement
@@ -118,7 +120,7 @@ bool MyGTKGLSceneWidget::on_configure_event(GdkEventConfigure* event) {
 }
 
 bool MyGTKGLSceneWidget::on_expose_event(GdkEventExpose* event) {
-	CALL_TRACE ; // This one runs mainly when GTK GL Widget have to be redrawn
+//	CALL_TRACE ; // This one runs mainly when GTK GL Widget have to be redrawn
 
 	Glib::RefPtr<Gdk::GL::Window> glwindow = get_gl_window();
 
@@ -131,15 +133,15 @@ bool MyGTKGLSceneWidget::on_expose_event(GdkEventExpose* event) {
 	//Camera position update
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
-	gluLookAt(0.0, 0.0, 3.0,
-			0.0, 0.0, 0.0,
-			0.0, 1.0, 0.0);
-	glTranslatef(0.0, 0.0, -3.0);
+	glTranslatef(0.0, 0.0, this->camera.tz);
+	glRotatef(this->camera.rx, 1.0, 0.0, 0.0);
+	glRotatef(this->camera.ry, 0.0, 1.0, 0.0);
 
 	// Drawing all the stuff
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	glCallList(1);
 
+
 	glwindow->gl_end();
 	// *** OpenGL END ***
 
@@ -153,31 +155,33 @@ bool MyGTKGLSceneWidget::on_motion_notify_event (GdkEventMotion *event) {
 }
 
 bool MyGTKGLSceneWidget::on_button_press_event(GdkEventButton *event) {
-	return do_mouse_logic(event->type, event->state, event->x, event->y);
+	return do_mouse_logic(event->type, event->state | 1<<(7+event->button) , event->x, event->y);
 }
 
 bool MyGTKGLSceneWidget::on_button_release_event(GdkEventButton *event) {
 	return do_mouse_logic(event->type, event->state, event->x, event->y);
 }
 
-#define KEYBOARD_MODIFIERS ( \
-	GDK_SHIFT_MASK | GDK_LOCK_MASK | GDK_CONTROL_MASK \
-	| GDK_SUPER_MASK | GDK_HYPER_MASK | GDK_META_MASK \
-)
-/* | GDK_MOD1_MASK | GDK_MOD2_MASK | GDK_MOD3_MASK | GDK_MOD4_MASK |GDK_MOD5_MASK \ */
+#define ALL_KEYBOARD_MODIFIERS ( GDK_SHIFT_MASK | GDK_CONTROL_MASK \
+	| GDK_SUPER_MASK | GDK_HYPER_MASK | GDK_META_MASK )
 
-#define MOUSE_CLIC(button, allowed_modifier_mask) if ( \
+#define MOUSE_CLIC(button, required_modifier_mask, allowed_extra_modifier_mask) if ( \
 	type == GDK_BUTTON_RELEASE \
 	&& ( state & button ) == button \
-	&& ( ( state & KEYBOARD_MODIFIERS ) & ~allowed_modifier_mask ) == 0 \
+	&& ( state & required_modifier_mask ) == required_modifier_mask \
+	&& ( ( state & ALL_KEYBOARD_MODIFIERS ) & ~( required_modifier_mask | allowed_extra_modifier_mask ) ) == 0 \
 )
 #define MOUSE_DOUBLECLIC(state_mask) if ( \
 	type == GDK_BUTTON_RELEASE \
 	&& ( state & state_mask ) == state_mask \
 	&& prev_type == GDK_2BUTTON_PRESS \
 )
+#define MOUSE_DRAG_START(state_mask) if ( \
+	type == GDK_BUTTON_PRESS \
+	&& ( state & state_mask ) == state_mask \
+)
 #define MOUSE_DRAGING(state_mask) if ( \
-	( type == GDK_BUTTON_PRESS || type == GDK_MOTION_NOTIFY ) \
+	( type == GDK_MOTION_NOTIFY ) \
 	&& ( state & state_mask ) == state_mask \
 )
 #define MOUSE_DRAG_END(state_mask) if ( \
@@ -198,31 +202,45 @@ bool MyGTKGLSceneWidget::do_mouse_logic(GdkEventType type, guint state, guint x,
  *	GDK_MOD1_MASK, ... (normally MOD1 it is the Alt key)
  * 	GDK_SUPER_MASK, GDK_HYPER_MASK, GDK_META_MASK (extra keybord modifier keys)
  */
+	// Static variables to hold previous mouse button event
 	static GdkEventType prev_type = GDK_NOTHING;
-//	static guint          prev_state= 0;   // Empty mask
-//
-	std::cout << "event type " << type << " state " << state << " on (" << x << "," << y << ") " << std::endl;
-//	std::cout << "DEBUG ( state & KEYBOARD_MODIFIERS ) == " << ( state & KEYBOARD_MODIFIERS ) << std::endl;
+       	/*static guint prev_state=0; UNUSED FOR NOW */
+	static guint drag_x=0, drag_y=0;
+
+	bool redraw=false; // Setting it to true will queue a redraw to the widget (invalidate)
 
+//	std::cout << "event type " << type << " state " << state << " on (" << x << "," << y << ") " << std::endl;
 
 	/* *** BEGIN event filtering *** */ 
-	MOUSE_DOUBLECLIC(GDK_BUTTON1_MASK) {
-		std::cout << "Mouse 1 double clic" << std::endl;
+	MOUSE_DRAG_START(GDK_BUTTON2_MASK) {
+		drag_x=x; drag_y=y;
 	}
 
 	MOUSE_DRAGING(GDK_BUTTON2_MASK) {
-		std::cout << "Mouse 2 dragging" << " on (" << x << "," << y << ") " << std::endl;
+		float mouse_sensivity = 0.2f;
+		gint dx = drag_x - x; // Delta movement (since last event)
+		gint dy = drag_y - y; // Not unsigned !
+		// Yes dy for camera.rx, and -= operator
+		// GTK mouse coords and Opengl are not on the same coords system
+		this->camera.rx -= mouse_sensivity * dy;
+		this->camera.ry -= mouse_sensivity * dx;
+		drag_x = x; drag_y = y;
+		redraw=true;
 	}
 
-	MOUSE_CLIC(GDK_BUTTON3_MASK, 0) {
-		std::cout << "Mouse 3 clic without any key modifier" << std::endl;
+	MOUSE_CLIC(GDK_BUTTON1_MASK, 0, 0) {
+		//TODO 
 	}
+
 	
-	//FIXME : this is buggy !!!
-	MOUSE_CLIC(GDK_BUTTON3_MASK, GDK_SHIFT_MASK) {
-		std::cout << "Mouse 3 clic with shift or control" << std::endl;
+	// Demo filters
+	MOUSE_CLIC(GDK_BUTTON1_MASK, GDK_SHIFT_MASK, GDK_CONTROL_MASK) {
+		std::cout << "Mouse 1 clic with shift or control-shift" << std::endl;
+	}
+	
+	MOUSE_DOUBLECLIC(GDK_BUTTON3_MASK) {
+		std::cout << "Mouse 1 double clic" << std::endl;
 	}
-
 	/* *** END event filtering *** */
 
 
@@ -237,5 +255,7 @@ bool MyGTKGLSceneWidget::do_mouse_logic(GdkEventType type, guint state, guint x,
 		default:
 			break;
 	}
+
+	if ( redraw ) queue_draw();
 	return true;
 }
diff --git a/src/my_gtk_gl_scene_widget.h b/src/my_gtk_gl_scene_widget.h
index 8445252..bf156ab 100644
--- a/src/my_gtk_gl_scene_widget.h
+++ b/src/my_gtk_gl_scene_widget.h
@@ -22,6 +22,8 @@ class MyGTKGLSceneWidget : public Gtk::DrawingArea, public Gtk::GL::Widget<MyGTK
 		virtual bool on_button_release_event(GdkEventButton *event);
 
 		bool do_mouse_logic(GdkEventType type, guint state, guint x, guint y);
+	private:
+		struct camera_params { float rx; float ry; float tz; } camera;
 };
 
 #endif /*MY_GTK_GL_SCENE_H*/