X-Git-Url: https://git.ucc.asn.au/?p=ipdf%2Fcode.git;a=blobdiff_plain;f=src%2Fview.cpp;h=0354ee9e1ca44b9c3da02b3e06bb79c71f881443;hp=3c6e2f510ff1e5790c83deda9e525ab0b9baec39;hb=6ad7439e8ebf969fcd2d3a710a4b16e2b1ee131f;hpb=67fb91aae1fc5315f462d6b5818806f154e9e687

diff --git a/src/view.cpp b/src/view.cpp
index 3c6e2f5..0354ee9 100644
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -35,6 +35,17 @@ void View::ScaleAroundPoint(Real x, Real y, Real scaleAmt)
 	m_bounds.h *= scaleAmt;
 }
 
+Rect View::TransformToViewCoords(const Rect& inp) const
+{
+	Rect out;
+	out.x = (inp.x - m_bounds.x) / m_bounds.w;
+	out.y = (inp.y - m_bounds.y) / m_bounds.h;
+
+	out.w = inp.w / m_bounds.w;
+	out.h = inp.h / m_bounds.h;
+	return out;
+}
+
 void View::DrawGrid()
 {
 	// Draw some grid lines at fixed pixel positions
@@ -69,24 +80,42 @@ 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();
-	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);
+	if (m_use_gpu_transform)
+	{
+		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);
+	}
+	else
+	{
+		glOrtho(0,1,1,0,-1,1);
+	}
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 
+	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)
 			continue;
-		Rect obj_bounds = m_document.m_objects.bounds[id];
+		Rect obj_bounds;
+		if (m_use_gpu_transform)
+		{
+			obj_bounds = m_document.m_objects.bounds[id];
+		}
+		else
+		{
+			obj_bounds = TransformToViewCoords(m_document.m_objects.bounds[id]);
+		}
 		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));
@@ -99,7 +128,15 @@ void View::Render()
 	{
 		if (m_document.m_objects.types[id] != RECT_OUTLINE)
 			continue;
-		Rect obj_bounds = m_document.m_objects.bounds[id];
+		Rect obj_bounds;
+		if (m_use_gpu_transform)
+		{
+			obj_bounds = m_document.m_objects.bounds[id];
+		}
+		else
+		{
+			obj_bounds = TransformToViewCoords(m_document.m_objects.bounds[id]);
+		}
 		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));
@@ -108,4 +145,9 @@ void View::Render()
 		glEnd();
 	}
 
+	if (m_colour.a < 1.0f)
+	{
+		glDisable(GL_BLEND);
+	}
+
 }