/*
-Copyright (C) 2001-2006, William Joseph.
-All Rights Reserved.
+ Copyright (C) 2001-2006, William Joseph.
+ All Rights Reserved.
-This file is part of GtkRadiant.
+ This file is part of GtkRadiant.
-GtkRadiant is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ GtkRadiant is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-GtkRadiant is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ GtkRadiant is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GtkRadiant; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
+ You should have received a copy of the GNU General Public License
+ along with GtkRadiant; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
#include "glfont.h"
-
+#include "globaldefs.h"
#include "igl.h"
-#include <gtk/gtkglwidget.h>
-GLFont glfont_create(const char* font_string)
+// generic string printing with call lists
+class GLFontCallList : public GLFont
{
- GLuint font_list_base = glGenLists (256);
- gint font_height = 0;
+GLuint m_displayList;
+int m_pixelHeight;
+int m_pixelAscent;
+int m_pixelDescent;
+public:
+GLFontCallList( GLuint displayList, int asc, int desc, int pixelHeight ) : m_displayList( displayList ), m_pixelHeight( pixelHeight ), m_pixelAscent( asc ), m_pixelDescent( desc ){
+}
+virtual ~GLFontCallList(){
+ glDeleteLists( m_displayList, 256 );
+}
+void printString( const char *s ){
+ GlobalOpenGL().m_glListBase( m_displayList );
+ GlobalOpenGL().m_glCallLists( GLsizei( strlen( s ) ), GL_UNSIGNED_BYTE, reinterpret_cast<const GLubyte*>( s ) );
+}
+virtual int getPixelAscent() const {
+ return m_pixelAscent;
+}
+virtual int getPixelDescent() const {
+ return m_pixelDescent;
+}
+virtual int getPixelHeight() const {
+ return m_pixelHeight;
+}
+};
+
+#if GDEF_OS_WINDOWS
+ #include <windows.h>
+#endif
+#include "debugging/debugging.h"
+
+// LordHavoc: this is code for direct Xlib bitmap character fetching, as an
+// alternative to requiring gtkglarea, it was created due to a lack of this
+// package on SuSE 9.x but this package is now commonly shipping in Linux
+// distributions so this code may be unnecessary, feel free however to enable
+// it when building packages for distros that do not ship with that package,
+// or if you just prefer less dependencies...
+#if 0
+
+#include <X11/Xlib.h>
+#include <gdk/gdkx.h>
+#include <GL/glx.h>
+
+GLFont *glfont_create( const char* font_string ){
+ GLuint font_list_base;
+ XFontStruct *fontInfo;
+ Display *dpy = GDK_DISPLAY();
+ unsigned int i, first, last, firstrow, lastrow;
+ int maxchars;
+ int firstbitmap;
+
+ fontInfo = XLoadQueryFont( dpy, "-*-fixed-*-*-*-*-8-*-*-*-*-*-*-*" );
+ if ( fontInfo == NULL ) {
+ // try to load other fonts
+ fontInfo = XLoadQueryFont( dpy, "-*-fixed-*-*-*-*-*-*-*-*-*-*-*-*" );
+
+ // any font will do !
+ if ( fontInfo == NULL ) {
+ fontInfo = XLoadQueryFont( dpy, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*" );
+ }
+
+ if ( fontInfo == NULL ) {
+ ERROR_MESSAGE( "couldn't create font" );
+ }
+ }
+
+ first = (int)fontInfo->min_char_or_byte2;
+ last = (int)fontInfo->max_char_or_byte2;
+ firstrow = (int)fontInfo->min_byte1;
+ lastrow = (int)fontInfo->max_byte1;
+ /*
+ * How many chars in the charset
+ */
+ maxchars = 256 * lastrow + last;
+ font_list_base = glGenLists( maxchars + 1 );
+ if ( font_list_base == 0 ) {
+ ERROR_MESSAGE( "couldn't create font" );
+ }
+
+ /*
+ * Get offset to first char in the charset
+ */
+ firstbitmap = 256 * firstrow + first;
+ /*
+ * for each row of chars, call glXUseXFont to build the bitmaps.
+ */
+
+ for ( i = firstrow; i <= lastrow; i++ )
+ {
+ glXUseXFont( fontInfo->fid, firstbitmap, last - first + 1, font_list_base + firstbitmap );
+ firstbitmap += 256;
+ }
+
+/* *height = fontInfo->ascent + fontInfo->descent;
+ *width = fontInfo->max_bounds.width; */
+ return new GLFontCallList( font_list_base, fontInfo->ascent, fontInfo->descent, fontInfo->ascent + fontInfo->descent );
+}
+
+#elif 0
+
+#include <gtk/gtkglwidget.h>
+
+GLFont *glfont_create( const char* font_string ){
+ GLuint font_list_base = glGenLists( 256 );
+ gint font_height = 0, font_ascent = 0, font_descent = 0;
+
+ PangoFontDescription* font_desc = pango_font_description_from_string( font_string );
+
+ PangoFont* font = gdk_gl_font_use_pango_font( font_desc, 0, 256, font_list_base );
+
+ if ( font == 0 ) {
+ pango_font_description_free( font_desc );
+ font_desc = pango_font_description_from_string( "fixed 8" );
+ font = gdk_gl_font_use_pango_font( font_desc, 0, 256, font_list_base );
+ }
+
+ if ( font == 0 ) {
+ pango_font_description_free( font_desc );
+ font_desc = pango_font_description_from_string( "courier new 8" );
+ font = gdk_gl_font_use_pango_font( font_desc, 0, 256, font_list_base );
+ }
- PangoFontDescription* font_desc = pango_font_description_from_string (font_string);
+ if ( font != 0 ) {
+ PangoFontMetrics* font_metrics = pango_font_get_metrics( font, 0 );
- PangoFont* font = gdk_gl_font_use_pango_font (font_desc, 0, 256, font_list_base);
+ font_ascent = pango_font_metrics_get_ascent( font_metrics );
+ font_descent = pango_font_metrics_get_descent( font_metrics );
+ font_height = font_ascent + font_descent;
- if(font != 0)
- {
- PangoFontMetrics* font_metrics = pango_font_get_metrics (font, 0);
+ font_ascent = PANGO_PIXELS( font_ascent );
+ font_descent = PANGO_PIXELS( font_descent );
+ font_height = PANGO_PIXELS( font_height );
- font_height = pango_font_metrics_get_ascent (font_metrics) +
- pango_font_metrics_get_descent (font_metrics);
- font_height = PANGO_PIXELS (font_height);
+ pango_font_metrics_unref( font_metrics );
+ }
- pango_font_metrics_unref (font_metrics);
- }
+ pango_font_description_free( font_desc );
- pango_font_description_free (font_desc);
+ // fix for pango/gtkglext metrix bug
+ if ( font_height > 256 ) {
+ font_height = 16;
+ }
- return GLFont(font_list_base, font_height);
+ return new GLFontCallList( font_list_base, font_ascent, font_descent, font_height );
}
+#else
-void glfont_release(GLFont& font)
+// new font code ripped from ZeroRadiant
+
+#include <pango/pangoft2.h>
+#include <pango/pango-features.h>
+#include <pango/pango-utils.h>
+
+class GLFontInternal : public GLFont
{
- glDeleteLists(font.getDisplayList(), 256);
- font = GLFont(0, 0);
+const char *font_string;
+int font_height;
+int font_ascent;
+int font_descent;
+int y_offset_bitmap_render_pango_units;
+PangoContext *ft2_context;
+PangoFontMap *fontmap;
+
+public:
+GLFontInternal( const char *_font_string ) : font_string( _font_string ){
+ PangoFontDescription *font_desc;
+ PangoLayout *layout;
+ PangoRectangle log_rect;
+ int font_ascent_pango_units;
+ int font_descent_pango_units;
+
+#if !PANGO_VERSION_CHECK( 1,22,0 )
+ ft2_context = pango_ft2_get_context( 72, 72 );
+#else
+ fontmap = pango_ft2_font_map_new();
+ pango_ft2_font_map_set_resolution( PANGO_FT2_FONT_MAP( fontmap ), 72, 72 );
+ ft2_context = pango_font_map_create_context( fontmap );
+#endif
+
+ font_desc = pango_font_description_from_string( font_string );
+ //pango_font_description_set_size(font_desc, 10 * PANGO_SCALE);
+ pango_context_set_font_description( ft2_context, font_desc );
+ pango_font_description_free( font_desc );
+ // TODO fallback to fixed 8, courier new 8
+
+ layout = pango_layout_new( ft2_context );
+
+#ifdef FONT_SIZE_WORKAROUND
+ pango_layout_set_width( layout, -1 ); // -1 no wrapping. All text on one line.
+ pango_layout_set_text( layout, "The quick brown fox jumped over the lazy sleeping dog's back then sat on a tack.", -1 ); // -1 null-terminated string.
+#endif
+
+#if !PANGO_VERSION_CHECK( 1,22,0 )
+ PangoLayoutIter *iter;
+ iter = pango_layout_get_iter( layout );
+ font_ascent_pango_units = pango_layout_iter_get_baseline( iter );
+ pango_layout_iter_free( iter );
+#else
+ font_ascent_pango_units = pango_layout_get_baseline( layout );
+#endif
+ pango_layout_get_extents( layout, NULL, &log_rect );
+ g_object_unref( G_OBJECT( layout ) );
+ font_descent_pango_units = log_rect.height - font_ascent_pango_units;
+
+ font_ascent = PANGO_PIXELS_CEIL( font_ascent_pango_units );
+ font_descent = PANGO_PIXELS_CEIL( font_descent_pango_units );
+ font_height = font_ascent + font_descent;
+ y_offset_bitmap_render_pango_units = ( font_ascent * PANGO_SCALE ) - font_ascent_pango_units;
+}
+
+virtual ~GLFontInternal(){
+ g_object_unref( G_OBJECT( ft2_context ) );
+ g_object_unref( G_OBJECT( fontmap ) );
+}
+
+// Renders the input text at the current location with the current color.
+// The X position of the current location is used to place the left edge of the text image,
+// where the text image bounds are defined as the logical extents of the line of text.
+// The Y position of the current location is used to place the bottom of the text image.
+// You should offset the Y position by the amount returned by gtk_glwidget_font_descent()
+// if you want to place the baseline of the text image at the current Y position.
+// Note: A problem with this function is that if the lower left corner of the text falls
+// just a hair outside of the viewport (meaning the current raster position is invalid),
+// then no text will be rendered. The solution to this is a very hacky one. You can search
+// Google for "glDrawPixels clipping".
+virtual void printString( const char *s ){
+ // The idea for this code initially came from the font-pangoft2.c example that comes with GtkGLExt.
+
+ PangoLayout *layout;
+ PangoRectangle log_rect;
+ FT_Bitmap bitmap;
+ unsigned char *begin_bitmap_buffer;
+ GLfloat color[4];
+ GLint previous_unpack_alignment;
+ GLboolean previous_blend_enabled;
+ GLint previous_blend_func_src;
+ GLint previous_blend_func_dst;
+ GLfloat previous_red_bias;
+ GLfloat previous_green_bias;
+ GLfloat previous_blue_bias;
+ GLfloat previous_alpha_scale;
+
+ layout = pango_layout_new( ft2_context );
+ pango_layout_set_width( layout, -1 ); // -1 no wrapping. All text on one line.
+ pango_layout_set_text( layout, s, -1 ); // -1 null-terminated string.
+ pango_layout_get_extents( layout, NULL, &log_rect );
+
+ if ( log_rect.width > 0 && log_rect.height > 0 ) {
+ bitmap.rows = font_ascent + font_descent;
+ bitmap.width = PANGO_PIXELS_CEIL( log_rect.width );
+ bitmap.pitch = -bitmap.width; // Rendering it "upside down" for OpenGL.
+ begin_bitmap_buffer = (unsigned char *) g_malloc( bitmap.rows * bitmap.width );
+ memset( begin_bitmap_buffer, 0, bitmap.rows * bitmap.width );
+ bitmap.buffer = begin_bitmap_buffer + ( bitmap.rows - 1 ) * bitmap.width; // See pitch above.
+ bitmap.num_grays = 0xff;
+ bitmap.pixel_mode = FT_PIXEL_MODE_GRAY;
+ pango_ft2_render_layout_subpixel( &bitmap, layout, -log_rect.x,
+ y_offset_bitmap_render_pango_units );
+ GlobalOpenGL().m_glGetFloatv( GL_CURRENT_COLOR, color );
+
+ // Save state. I didn't see any OpenGL push/pop operations for these.
+ // Question: Is saving/restoring this state necessary? Being safe.
+ GlobalOpenGL().m_glGetIntegerv( GL_UNPACK_ALIGNMENT, &previous_unpack_alignment );
+ previous_blend_enabled = GlobalOpenGL().m_glIsEnabled( GL_BLEND );
+ GlobalOpenGL().m_glGetIntegerv( GL_BLEND_SRC, &previous_blend_func_src );
+ GlobalOpenGL().m_glGetIntegerv( GL_BLEND_DST, &previous_blend_func_dst );
+ GlobalOpenGL().m_glGetFloatv( GL_RED_BIAS, &previous_red_bias );
+ GlobalOpenGL().m_glGetFloatv( GL_GREEN_BIAS, &previous_green_bias );
+ GlobalOpenGL().m_glGetFloatv( GL_BLUE_BIAS, &previous_blue_bias );
+ GlobalOpenGL().m_glGetFloatv( GL_ALPHA_SCALE, &previous_alpha_scale );
+
+ GlobalOpenGL().m_glPixelStorei( GL_UNPACK_ALIGNMENT, 1 );
+ GlobalOpenGL().m_glEnable( GL_BLEND );
+ GlobalOpenGL().m_glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
+ GlobalOpenGL().m_glPixelTransferf( GL_RED_BIAS, color[0] );
+ GlobalOpenGL().m_glPixelTransferf( GL_GREEN_BIAS, color[1] );
+ GlobalOpenGL().m_glPixelTransferf( GL_BLUE_BIAS, color[2] );
+ GlobalOpenGL().m_glPixelTransferf( GL_ALPHA_SCALE, color[3] );
+
+ GlobalOpenGL().m_glDrawPixels( bitmap.width, bitmap.rows,
+ GL_ALPHA, GL_UNSIGNED_BYTE, begin_bitmap_buffer );
+ g_free( begin_bitmap_buffer );
+
+ // Restore state in reverse order of how we set it.
+ GlobalOpenGL().m_glPixelTransferf( GL_ALPHA_SCALE, previous_alpha_scale );
+ GlobalOpenGL().m_glPixelTransferf( GL_BLUE_BIAS, previous_blue_bias );
+ GlobalOpenGL().m_glPixelTransferf( GL_GREEN_BIAS, previous_green_bias );
+ GlobalOpenGL().m_glPixelTransferf( GL_RED_BIAS, previous_red_bias );
+ GlobalOpenGL().m_glBlendFunc( previous_blend_func_src, previous_blend_func_dst );
+ if ( !previous_blend_enabled ) {
+ GlobalOpenGL().m_glDisable( GL_BLEND );
+ }
+ GlobalOpenGL().m_glPixelStorei( GL_UNPACK_ALIGNMENT, previous_unpack_alignment );
+ }
+
+ g_object_unref( G_OBJECT( layout ) );
}
+
+virtual int getPixelAscent() const {
+ return font_ascent;
+}
+virtual int getPixelDescent() const {
+ return font_descent;
+}
+virtual int getPixelHeight() const {
+ return font_height;
+}
+};
+
+GLFont *glfont_create( const char* font_string ){
+ return new GLFontInternal( font_string );
+}
+
+#endif
projects / xonotic / netradiant.git / blobdiff