From df072b781c54bd0c6ba916c3c16f9b0f2daa1836 Mon Sep 17 00:00:00 2001
From: divverent <divverent@61c419a2-8eb2-4b30-bcec-8cead039b335>
Date: Thu, 9 Apr 2009 10:16:31 +0000
Subject: [PATCH] slightly better font handling, enjoy!

git-svn-id: svn://svn.icculus.org/netradiant/trunk@313 61c419a2-8eb2-4b30-bcec-8cead039b335
---
 include/igl.h           |  2 ++
 libs/gtkutil/glfont.cpp | 16 ++++++++++------
 libs/gtkutil/glfont.h   | 12 +++++++++++-
 radiant/camwindow.cpp   |  4 ++--
 radiant/mainframe.cpp   |  4 +++-
 radiant/xywindow.cpp    |  3 ++-
 6 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/include/igl.h b/include/igl.h
index 29bf5f80..b1753457 100644
--- a/include/igl.h
+++ b/include/igl.h
@@ -1999,6 +1999,8 @@ struct OpenGLBinding
 
   GLuint m_font;
   int m_fontHeight;
+  int m_fontAscent;
+  int m_fontDescent;
 
   /// \brief Renders \p string at the current raster-position of the current context.
   void drawString(const char* string) const
diff --git a/libs/gtkutil/glfont.cpp b/libs/gtkutil/glfont.cpp
index e46236d3..13d16fdb 100644
--- a/libs/gtkutil/glfont.cpp
+++ b/libs/gtkutil/glfont.cpp
@@ -107,7 +107,7 @@ void glfont_release(GLFont& font)
 GLFont glfont_create(const char* font_string)
 {
   GLuint font_list_base = glGenLists (256);
-  gint font_height = 0;
+  gint font_height = 0, font_ascent = 0, font_descent = 0;
 
   PangoFontDescription* font_desc = pango_font_description_from_string (font_string);
 
@@ -117,8 +117,12 @@ GLFont glfont_create(const char* font_string)
   {
     PangoFontMetrics* font_metrics = pango_font_get_metrics (font, 0);
 
-    font_height = pango_font_metrics_get_ascent (font_metrics) +
-                  pango_font_metrics_get_descent (font_metrics);
+    font_ascent = pango_font_metrics_get_ascent (font_metrics);
+	font_descent = pango_font_metrics_get_descent (font_metrics);
+	font_height = font_ascent + font_descent;
+
+    font_ascent = PANGO_PIXELS (font_ascent);
+    font_descent = PANGO_PIXELS (font_descent);
     font_height = PANGO_PIXELS (font_height);
 
     pango_font_metrics_unref (font_metrics);
@@ -127,15 +131,15 @@ GLFont glfont_create(const char* font_string)
   pango_font_description_free (font_desc);
 
   // fix for pango/gtkglext metrix bug
-  if(font_height > 16)
+  if(font_height > 256)
 	  font_height = 16;
 
-  return GLFont(font_list_base, font_height);
+  return GLFont(font_list_base, font_ascent, font_descent, font_height);
 }
 
 void glfont_release(GLFont& font)
 {
   glDeleteLists(font.getDisplayList(), 256);
-  font = GLFont(0, 0);
+  font = GLFont(0, 0, 0, 0);
 }
 #endif
diff --git a/libs/gtkutil/glfont.h b/libs/gtkutil/glfont.h
index 8c18afad..454c6a97 100644
--- a/libs/gtkutil/glfont.h
+++ b/libs/gtkutil/glfont.h
@@ -28,8 +28,10 @@ class GLFont
 {
   GLuint m_displayList;
   int m_pixelHeight;
+  int m_pixelAscent;
+  int m_pixelDescent;
 public:
-  GLFont(GLuint displayList, int pixelHeight) : m_displayList(displayList), m_pixelHeight(pixelHeight)
+  GLFont(GLuint displayList, int asc, int desc, int pixelHeight) : m_displayList(displayList), m_pixelHeight(pixelHeight), m_pixelAscent(asc), m_pixelDescent(desc)
   {
   }
   GLuint getDisplayList() const
@@ -40,6 +42,14 @@ public:
   {
     return m_pixelHeight;
   }
+  int getPixelAscent() const
+  {
+    return m_pixelAscent;
+  }
+  int getPixelDescent() const
+  {
+    return m_pixelDescent;
+  }
 };
 
 GLFont glfont_create(const char* font_string);
diff --git a/radiant/camwindow.cpp b/radiant/camwindow.cpp
index c26bc5b5..f1566abd 100644
--- a/radiant/camwindow.cpp
+++ b/radiant/camwindow.cpp
@@ -1691,11 +1691,11 @@ void CamWnd::Cam_Draw()
 
   if(g_camwindow_globals_private.m_showStats)
   {
-    glRasterPos3f(1.0f, static_cast<float>(m_Camera.height) - 1.0f, 0.0f);
+    glRasterPos3f(1.0f, static_cast<float>(m_Camera.height) - GlobalOpenGL().m_fontDescent, 0.0f);
     extern const char* Renderer_GetStats();
     GlobalOpenGL().drawString(Renderer_GetStats());
 
-    glRasterPos3f(1.0f, static_cast<float>(m_Camera.height) - 11.0f, 0.0f);
+    glRasterPos3f(1.0f, static_cast<float>(m_Camera.height) - GlobalOpenGL().m_fontDescent - GlobalOpenGL().m_fontHeight, 0.0f);
     extern const char* Cull_GetStats();
     GlobalOpenGL().drawString(Cull_GetStats());
   }
diff --git a/radiant/mainframe.cpp b/radiant/mainframe.cpp
index dd3a17b9..d6f467da 100644
--- a/radiant/mainframe.cpp
+++ b/radiant/mainframe.cpp
@@ -3305,7 +3305,7 @@ void GridStatus_onTextureLockEnabledChanged()
 
 namespace
 {
-  GLFont g_font(0, 0);
+  GLFont g_font(0, 0, 0, 0);
 }
 
 void GlobalGL_sharedContextCreated()
@@ -3331,6 +3331,8 @@ void GlobalGL_sharedContextCreated()
 
   GlobalOpenGL().m_font = g_font.getDisplayList();
   GlobalOpenGL().m_fontHeight = g_font.getPixelHeight();
+  GlobalOpenGL().m_fontAscent = g_font.getPixelAscent();
+  GlobalOpenGL().m_fontDescent = g_font.getPixelDescent();
 }
 
 void GlobalGL_sharedContextDestroyed()
diff --git a/radiant/xywindow.cpp b/radiant/xywindow.cpp
index 40162f4d..9e6c1664 100644
--- a/radiant/xywindow.cpp
+++ b/radiant/xywindow.cpp
@@ -1842,7 +1842,8 @@ void XYWnd::XY_DrawGrid(void) {
 	// draw coordinate text if needed
 	if ( g_xywindow_globals_private.show_coordinates) {
 		glColor3fv(vector3_to_array(g_xywindow_globals.color_gridtext));
-		float offx = m_vOrigin[nDim2] + h - 6 / m_fScale, offy = m_vOrigin[nDim1] - w + 1 / m_fScale;
+		float offx = m_vOrigin[nDim2] + h - (1 + GlobalOpenGL().m_fontAscent) / m_fScale;
+		float offy = m_vOrigin[nDim1] - w +  1                                / m_fScale;
 		for (x = xb - fmod(xb, stepx); x <= xe ; x += stepx) {
 			glRasterPos2f (x, offx);
 			sprintf (text, "%g", x);
-- 
2.39.2