Simple class for tracking wx mouse in unit 0..1

CMakeLists.txt

@@ -95,6 +95,7 @@ SET (cubicsdr_sources
 	src/audio/AudioThread.cpp
 	src/util/Gradient.cpp
 	src/util/Timer.cpp
+	src/util/MouseTracker.cpp
 	src/visual/PrimaryGLContext.cpp
 	src/visual/ScopeCanvas.cpp
 	src/visual/ScopeContext.cpp
@@ -115,6 +116,7 @@ SET (cubicsdr_headers
 	src/util/Gradient.h
 	src/util/Timer.h
 	src/util/ThreadQueue.h
+	src/util/MouseTracker.h
 	src/visual/PrimaryGLContext.h
 	src/visual/ScopeCanvas.h
 	src/visual/ScopeContext.h

src/util/MouseTracker.cpp

@@ -0,0 +1,73 @@
+#include "MouseTracker.h"
+
+void MouseTracker::OnMouseMoved(wxMouseEvent& event) {
+    if (isMouseDown) {
+        const wxSize ClientSize = target->GetClientSize();
+        float mouseX = (float) event.m_x / (float) ClientSize.x;
+        float mouseY = (float) event.m_y / (float) ClientSize.y;
+
+        deltaMouseX = mouseX - lastMouseX;
+        deltaMouseY = mouseY - lastMouseY;
+
+        lastMouseX = mouseX;
+
+        if (vertDragLock && mouseY != lastMouseY) {
+            target->WarpPointer(event.m_x, lastMouseY * ClientSize.y);
+        } else {
+            lastMouseY = mouseY;
+        }
+    }
+}
+
+void MouseTracker::OnMouseDown(wxMouseEvent& event) {
+    const wxSize ClientSize = target->GetClientSize();
+
+    lastMouseX = (float) event.m_x / (float) ClientSize.x;
+    lastMouseY = (float) event.m_y / (float) ClientSize.y;
+
+    isMouseDown = true;
+}
+
+void MouseTracker::OnMouseWheelMoved(wxMouseEvent& event) {
+//    std::cout << "wheel?" << std::endl;
+}
+
+void MouseTracker::OnMouseReleased(wxMouseEvent& event) {
+    isMouseDown = false;
+}
+
+void MouseTracker::OnMouseLeftWindow(wxMouseEvent& event) {
+    isMouseDown = false;
+}
+
+float MouseTracker::getDeltaMouseX() {
+    return deltaMouseX;
+}
+
+float MouseTracker::getDeltaMouseY() {
+    return deltaMouseY;
+}
+
+float MouseTracker::getLastMouseX() {
+    return lastMouseX;
+}
+
+float MouseTracker::getLastMouseY() {
+    return lastMouseY;
+}
+
+float MouseTracker::getMouseX() {
+    return mouseX;
+}
+
+float MouseTracker::getMouseY() {
+    return mouseY;
+}
+
+void MouseTracker::setVertDragLock(bool dragLock) {
+    vertDragLock = dragLock;
+}
+
+bool MouseTracker::mouseDown() {
+    return isMouseDown;
+}

src/util/MouseTracker.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "wx/window.h"
+
+class MouseTracker {
+public:
+    MouseTracker(wxWindow *target) :
+            target(target), mouseX(0), mouseY(0), lastMouseX(0), lastMouseY(0), deltaMouseX(0), deltaMouseY(0), isMouseDown(false), vertDragLock(false) {
+
+    }
+
+    void OnMouseMoved(wxMouseEvent& event);
+    void OnMouseDown(wxMouseEvent& event);
+    void OnMouseWheelMoved(wxMouseEvent& event);
+    void OnMouseReleased(wxMouseEvent& event);
+    void OnMouseLeftWindow(wxMouseEvent& event);
+
+    float getDeltaMouseX();
+    float getDeltaMouseY();
+    float getLastMouseX();
+    float getLastMouseY();
+    float getMouseX();
+    float getMouseY();
+
+    void setVertDragLock(bool dragLock);
+    bool mouseDown();
+
+private:
+    float mouseX, mouseY;
+    float lastMouseX, lastMouseY;
+    float deltaMouseX, deltaMouseY;
+    bool isMouseDown;
+    bool vertDragLock;
+    wxWindow *target;
+};