Initial GUI work

1 files changed, 153 insertions, 0 deletions

diff --git a/gui/fpgaviewwidget.cc b/gui/fpgaviewwidget.cc
new file mode 100644
index 00000000..bd36b724
--- /dev/null
+++ b/gui/fpgaviewwidget.cc
@@ -0,0 +1,153 @@
+#include <QMouseEvent>
+#include <QCoreApplication>
+#include <math.h>
+#include "fpgaviewwidget.h"
+
+FPGAViewWidget::FPGAViewWidget(QWidget *parent)
+    : QOpenGLWidget(parent),
+      m_xMove(0),m_yMove(0),m_zDistance(1.0)
+{
+
+}
+
+FPGAViewWidget::~FPGAViewWidget()
+{
+}
+
+QSize FPGAViewWidget::minimumSizeHint() const
+{
+    return QSize(640, 480);
+}
+
+QSize FPGAViewWidget::sizeHint() const
+{
+    return QSize(640, 480);
+}
+
+void FPGAViewWidget::setXTranslation(float t_x)
+{
+    if(t_x != m_xMove)
+    {
+        m_xMove = t_x;
+        update();
+    }
+}
+
+
+void FPGAViewWidget::setYTranslation(float t_y)
+{
+    if(t_y != m_yMove)
+    {
+        m_yMove = t_y;
+        update();
+    }
+}
+
+
+void FPGAViewWidget::setZoom(float t_z)
+{
+    if(t_z != m_zDistance)
+    {
+        m_zDistance -= t_z;
+        if(m_zDistance < 0.1f)
+            m_zDistance = 0.1f;
+        if(m_zDistance > 10.0f)
+            m_zDistance = 10.0f;
+
+        update();
+    }
+}
+
+void FPGAViewWidget::initializeGL()
+{
+    initializeOpenGLFunctions();
+    glClearColor(1.0, 1.0, 1.0, 0.0);
+}
+
+void FPGAViewWidget::paintGL()
+{
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    glLoadIdentity();
+
+    glTranslatef(m_xMove, m_yMove, -10.0);
+    glScalef(m_zDistance,m_zDistance, 0.0f);
+    
+    // Example grid
+    glColor3f(0.8, 0.8, 0.8);
+    glBegin(GL_LINES);
+    for(float i = -100; i <= 100; i += 0.1)
+    {
+        glVertex3f((float)i, -100.0f, 0.0f);
+        glVertex3f((float)i, 100.0f, 0.0f);
+        glVertex3f(-100.0f, (float)i, 0.0f);
+        glVertex3f(100.0f, (float)i, 0.0f);
+    }
+    glColor3f(0.5, 0.5, 0.5);
+    for(int i = -100; i <= 100; i += 1)
+    {
+        glVertex3f((float)i, -100.0f, 0.0f);
+        glVertex3f((float)i, 100.0f, 0.0f);
+        glVertex3f(-100.0f, (float)i, 0.0f);
+        glVertex3f(100.0f, (float)i, 0.0f);
+    }
+    glEnd();
+
+    // Example triangle
+    glBegin(GL_TRIANGLES);
+    glColor3f(1.0, 0.0, 0.0);
+    glVertex3f(-0.5, -0.5, 0);
+    glColor3f(0.0, 1.0, 0.0);
+    glVertex3f(0.5, -0.5, 0);
+    glColor3f(0.0, 0.0, 1.0);
+    glVertex3f(0, 0.5, 0);
+    glEnd();
+
+}
+
+void FPGAViewWidget::resizeGL(int width, int height)
+{
+    m_windowWidth = width;
+    m_windowHeight = height;
+    glViewport(0, 0, m_windowWidth, m_windowHeight);
+
+    float aspect = width * 1.0 / height;
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-1.0* aspect, +1.0* aspect, -1.0, +1.0, 1.0, 15.0);
+    glMatrixMode(GL_MODELVIEW);
+}
+
+void FPGAViewWidget::mousePressEvent(QMouseEvent *event)
+{
+    m_lastPos = event->pos();
+}
+
+void FPGAViewWidget::mouseMoveEvent(QMouseEvent *event)
+{
+    int dx = event->x() - m_lastPos.x();
+    int dy = event->y() - m_lastPos.y();
+    float dx_scale = dx * (1 / (float)640);
+    float dy_scale = -dy * (1 / (float)480);
+
+    if (event->buttons() & Qt::LeftButton)
+    {
+        float xpos = m_xMove + dx_scale;
+        float ypos = m_yMove + dy_scale;
+        if (m_xMove/m_zDistance <= 100.0  && m_xMove/m_zDistance>= -100.0) setXTranslation(xpos);
+        if (m_yMove/m_zDistance <= 100.0  && m_yMove/m_zDistance>= -100.0) setYTranslation(ypos);
+
+    }
+    m_lastPos = event->pos();
+}
+
+void FPGAViewWidget::wheelEvent(QWheelEvent *event)
+{
+    QPoint degree = event->angleDelta() / 8;
+
+    if(!degree.isNull())
+    {
+        QPoint step = degree / 15;
+        setZoom(step.y() * -0.1f);
+    }
+}