Allow setting type of Real at compilation time

[ipdf/code.git] / src / view.cpp

diff --git a/src/view.cpp b/src/view.cpp
index 4425ebe..d8a875b 100644 (file)
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -7,8 +7,60 @@ using namespace std;
 
 void View::Translate(Real x, Real y)
 {
+       x *= m_bounds.w;
+       y *= m_bounds.h;
        m_bounds.x += x;
        m_bounds.y += y;
+       Debug("View Bounds => %s", m_bounds.Str().c_str());
+}
+
+void View::ScaleAroundPoint(Real x, Real y, Real scaleAmt)
+{
+       // x and y are coordinates in the window
+       // Convert to local coords.
+       x *= m_bounds.w;
+       y *= m_bounds.h;
+       x += m_bounds.x;
+       y += m_bounds.y;
+       
+       //Debug("Mouse wheel event %f %f %f\n", Float(x), Float(y), Float(scaleAmt));
+       
+       Real top = y - m_bounds.y;
+       Real left = x - m_bounds.x;
+       
+       top *= scaleAmt;
+       left *= scaleAmt;
+       
+       m_bounds.x = x - left;
+       m_bounds.y = y - top;
+       m_bounds.w *= scaleAmt;
+       m_bounds.h *= scaleAmt;
+       Debug("View Bounds => %s", m_bounds.Str().c_str());
+}
+
+void View::DrawGrid()
+{
+       // Draw some grid lines at fixed pixel positions
+       glMatrixMode(GL_PROJECTION);
+       glLoadIdentity();
+       glOrtho(0.0, 1.0, 1.0, 0.0, -1.f, 1.f);
+       glMatrixMode(GL_MODELVIEW);
+       glLoadIdentity();
+
+       glColor4f(0.9,0.9,0.9,0.1);
+       const float num_lines = 50.0;
+       for (float i = 0; i < num_lines; ++i)
+       {
+               glBegin(GL_LINES);
+               glVertex2f(i*(1.0/num_lines), 0.0);
+               glVertex2f(i*(1.0/num_lines), 1.0);
+               glEnd();
+               glBegin(GL_LINES);
+               glVertex2f(0.0,i*(1.0/num_lines));
+               glVertex2f(1.0,i*(1.0/num_lines));
+               glEnd();
+       
+       }
 }
 
 void View::Render()
@@ -20,8 +72,8 @@ void View::Render()
                debug_output_done = true;
        }
 
-       glClearColor(1.f,1.f,1.f,1.f);
-       glClear(GL_COLOR_BUFFER_BIT);
+
+       //DrawGrid(); // Draw the gridlines
 
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
@@ -29,7 +81,12 @@ void View::Render()
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
 
-       glColor4f(0.f,0.f,0.f,1.f);
+       if (m_colour.a < 1.0f)
+       {
+               glEnable(GL_BLEND);
+               glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+       }
+       glColor4f(m_colour.r, m_colour.g, m_colour.b, m_colour.a);
        glBegin(GL_QUADS);
        for (unsigned id = 0; id < m_document.ObjectCount(); ++id)
        {
@@ -43,6 +100,7 @@ void View::Render()
        }
        glEnd();
 
+       
        for (unsigned id = 0; id < m_document.ObjectCount(); ++id)
        {
                if (m_document.m_objects.types[id] != RECT_OUTLINE)
@@ -56,4 +114,9 @@ void View::Render()
                glEnd();
        }
 
+       if (m_colour.a < 1.0f)
+       {
+               glDisable(GL_BLEND);
+       }
+
 }