X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fview.cpp;h=d8a875bdc2ec680639641353fc06d628c1415810;hp=a1a70f4172dbd47284667bda53c1dfd293906d81;hb=e164c93218ed4599614f4f6e5e815429a3fedbf7;hpb=ee71bff635865bd443eed14e3558f72446439ab3

diff --git a/src/view.cpp b/src/view.cpp
index a1a70f4..d8a875b 100644
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -5,54 +5,118 @@
 using namespace IPDF;
 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()
 {
 	static bool debug_output_done = false;
 	if (!debug_output_done)
 	{
-		Debug("Bounds are %s", m_bounds.Str().c_str());
-		Debug("Objects are:");
-		for (unsigned id = 0; id < m_document.ObjectCount(); ++id)
-		{
-			Debug("%u\t%s", id, m_document.m_objects.bounds[id].Str().c_str());
-		}
+		m_document.DebugDumpObjects();
 		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();
-	glOrtho(m_bounds.x, m_bounds.x+m_bounds.w, m_bounds.y + m_bounds.h, m_bounds.y, -1.f, 1.f);
+	glOrtho(Float(m_bounds.x), Float(m_bounds.x)+Float(m_bounds.w), Float(m_bounds.y) + Float(m_bounds.h), Float(m_bounds.y), -1.f, 1.f);
 	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)
 	{
-		if (m_document.m_objects.types[id] == RECT_FILLED)
+		if (m_document.m_objects.types[id] != RECT_FILLED)
 			continue;
 		Rect obj_bounds = m_document.m_objects.bounds[id];
-		glVertex2f(obj_bounds.x, obj_bounds.y);
-		glVertex2f(obj_bounds.x + obj_bounds.w, obj_bounds.y);
-		glVertex2f(obj_bounds.x + obj_bounds.w, obj_bounds.y + obj_bounds.h);
-		glVertex2f(obj_bounds.x, obj_bounds.y + obj_bounds.h);
+		glVertex2f(Float(obj_bounds.x), Float(obj_bounds.y));
+		glVertex2f(Float(obj_bounds.x) + Float(obj_bounds.w), Float(obj_bounds.y));
+		glVertex2f(Float(obj_bounds.x) + Float(obj_bounds.w), Float(obj_bounds.y) + Float(obj_bounds.h));
+		glVertex2f(Float(obj_bounds.x), Float(obj_bounds.y) + Float(obj_bounds.h));
 	}
 	glEnd();
 
-	glBegin(GL_LINE_LOOP);
+	
 	for (unsigned id = 0; id < m_document.ObjectCount(); ++id)
 	{
-		if (m_document.m_objects.types[id] == RECT_OUTLINE)
+		if (m_document.m_objects.types[id] != RECT_OUTLINE)
 			continue;
 		Rect obj_bounds = m_document.m_objects.bounds[id];
-		glVertex2f(obj_bounds.x, obj_bounds.y);
-		glVertex2f(obj_bounds.x + obj_bounds.w, obj_bounds.y);
-		glVertex2f(obj_bounds.x + obj_bounds.w, obj_bounds.y + obj_bounds.h);
-		glVertex2f(obj_bounds.x, obj_bounds.y + obj_bounds.h);
+		glBegin(GL_LINE_LOOP);
+		glVertex2f(Float(obj_bounds.x), Float(obj_bounds.y));
+		glVertex2f(Float(obj_bounds.x) + Float(obj_bounds.w), Float(obj_bounds.y));
+		glVertex2f(Float(obj_bounds.x) + Float(obj_bounds.w), Float(obj_bounds.y) + Float(obj_bounds.h));
+		glVertex2f(Float(obj_bounds.x), Float(obj_bounds.y) + Float(obj_bounds.h));
+		glEnd();
+	}
+
+	if (m_colour.a < 1.0f)
+	{
+		glDisable(GL_BLEND);
 	}
-	glEnd();
 
 }