X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=radiant%2Fglwidget.cpp;h=0820d78795be8efd1ee3c73373d50c7b12730fc2;hb=32dc1da26645b97a5823ff22175000542225c6dd;hp=d8d5456b4cd244ac440eb3cc6070cd1a4b03a8ac;hpb=830125fad042fad35dc029b6eb57c8156ad7e176;p=xonotic%2Fnetradiant.git diff --git a/radiant/glwidget.cpp b/radiant/glwidget.cpp index d8d5456b..0820d787 100644 --- a/radiant/glwidget.cpp +++ b/radiant/glwidget.cpp @@ -1,391 +1,52 @@ /* - Copyright (c) 2001, Loki software, inc. - All rights reserved. + Copyright (C) 2001-2006, William Joseph. + All Rights Reserved. - Redistribution and use in source and binary forms, with or without modification, - are permitted provided that the following conditions are met: + This file is part of GtkRadiant. - Redistributions of source code must retain the above copyright notice, this list - of conditions and the following disclaimer. + 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. - Redistributions in binary form must reproduce the above copyright notice, this - list of conditions and the following disclaimer in the documentation and/or - other materials provided with the distribution. + 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. - Neither the name of Loki software nor the names of its contributors may be used - to endorse or promote products derived from this software without specific prior - written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY - DIRECT,INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + 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 */ -// OpenGL widget based on GtkGLExt - -#include "stdafx.h" - -#include - -#include - #include "glwidget.h" -#include "qgl.h" - -typedef int* attribs_t; -typedef const attribs_t* configs_iterator; - -int config_rgba32[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 8, - GDK_GL_BLUE_SIZE, 8, - GDK_GL_GREEN_SIZE, 8, - GDK_GL_ALPHA_SIZE, 8, - GDK_GL_ATTRIB_LIST_NONE, -}; - -int config_rgba[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 1, - GDK_GL_BLUE_SIZE, 1, - GDK_GL_GREEN_SIZE, 1, - GDK_GL_ALPHA_SIZE, 1, - GDK_GL_ATTRIB_LIST_NONE, -}; -const attribs_t configs[] = { - config_rgba32, - config_rgba, -}; - -GdkGLConfig* glconfig_new(){ - GdkGLConfig* glconfig = NULL; - - for ( configs_iterator i = configs, end = configs + 2; i != end && glconfig == NULL; ++i ) - { - glconfig = gdk_gl_config_new( *i ); - } - - if ( glconfig == NULL ) { - return gdk_gl_config_new_by_mode( (GdkGLConfigMode)( GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE ) ); - } - - return glconfig; -} - -int config_rgba32_depth32[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 8, - GDK_GL_BLUE_SIZE, 8, - GDK_GL_GREEN_SIZE, 8, - GDK_GL_ALPHA_SIZE, 8, - GDK_GL_DEPTH_SIZE, 32, - GDK_GL_ATTRIB_LIST_NONE, -}; - -int config_rgba32_depth24[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 8, - GDK_GL_BLUE_SIZE, 8, - GDK_GL_GREEN_SIZE, 8, - GDK_GL_ALPHA_SIZE, 8, - GDK_GL_DEPTH_SIZE, 24, - GDK_GL_ATTRIB_LIST_NONE, -}; +#include "igtkgl.h" +#include "modulesystem.h" +#include "gtkutil/glwidget.h" -int config_rgba32_depth16[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 8, - GDK_GL_BLUE_SIZE, 8, - GDK_GL_GREEN_SIZE, 8, - GDK_GL_ALPHA_SIZE, 8, - GDK_GL_DEPTH_SIZE, 16, - GDK_GL_ATTRIB_LIST_NONE, -}; - -int config_rgba32_depth[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 8, - GDK_GL_BLUE_SIZE, 8, - GDK_GL_GREEN_SIZE, 8, - GDK_GL_ALPHA_SIZE, 8, - GDK_GL_DEPTH_SIZE, 1, - GDK_GL_ATTRIB_LIST_NONE, -}; - -int config_rgba_depth16[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 1, - GDK_GL_BLUE_SIZE, 1, - GDK_GL_GREEN_SIZE, 1, - GDK_GL_ALPHA_SIZE, 1, - GDK_GL_DEPTH_SIZE, 16, - GDK_GL_ATTRIB_LIST_NONE, -}; - -int config_rgba_depth[] = { - GDK_GL_RGBA, - GDK_GL_DOUBLEBUFFER, - GDK_GL_RED_SIZE, 1, - GDK_GL_BLUE_SIZE, 1, - GDK_GL_GREEN_SIZE, 1, - GDK_GL_ALPHA_SIZE, 1, - GDK_GL_DEPTH_SIZE, 1, - GDK_GL_ATTRIB_LIST_NONE, -}; - -const attribs_t configs_with_depth[] = +class GtkGLAPI { - config_rgba32_depth32, - config_rgba32_depth24, - config_rgba32_depth16, - config_rgba32_depth, - config_rgba_depth16, - config_rgba_depth, -}; - -GdkGLConfig* glconfig_new_with_depth(){ - GdkGLConfig* glconfig = NULL; - - for ( configs_iterator i = configs_with_depth, end = configs_with_depth + 6; i != end && glconfig == NULL; ++i ) - { - glconfig = gdk_gl_config_new( *i ); - } - - if ( glconfig == NULL ) { - return gdk_gl_config_new_by_mode( (GdkGLConfigMode)( GDK_GL_MODE_RGBA | GDK_GL_MODE_DOUBLE | GDK_GL_MODE_DEPTH ) ); - } - - return glconfig; -} - -GtkWidget* WINAPI gtk_glwidget_new( gboolean zbuffer, GtkWidget* share ){ - GtkWidget* drawing_area = gtk_drawing_area_new(); - GdkGLConfig* glconfig = ( zbuffer ) ? glconfig_new_with_depth() : glconfig_new(); - GdkGLContext* shared_context = ( share ) ? gtk_widget_get_gl_context( share ) : NULL; - - gtk_widget_set_gl_capability( drawing_area, glconfig, shared_context, TRUE, GDK_GL_RGBA_TYPE ); - - return drawing_area; -} - -void WINAPI gtk_glwidget_destroy_context( GtkWidget *widget ){ -} - -void WINAPI gtk_glwidget_create_context( GtkWidget *widget ){ -} - -void WINAPI gtk_glwidget_swap_buffers( GtkWidget *widget ){ - GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable( widget ); - gdk_gl_drawable_swap_buffers( gldrawable ); -} - -gboolean WINAPI gtk_glwidget_make_current( GtkWidget *widget ){ - GdkGLContext *glcontext = gtk_widget_get_gl_context( widget ); - GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable( widget ); - return gdk_gl_drawable_gl_begin( gldrawable, glcontext ); -} - - -// Think about rewriting this font stuff to use OpenGL display lists and glBitmap(). -// Bit maps together with display lists may offer a performance increase, but -// they would not allow antialiased fonts. -#ifdef _WIN32 -static const char font_string[] = "Courier bold"; -static const int font_height = 9; -#else -static const char font_string[] = "Monospace"; -static const int font_height = 10; -#endif -static int font_ascent = -1; -static int font_descent = -1; -static int y_offset_bitmap_render_pango_units = -1; -static PangoContext *ft2_context = NULL; -static int _debug_font_created = 0; - +_QERGtkGLTable m_gtkgl; +public: +typedef _QERGtkGLTable Type; +STRING_CONSTANT( Name, "*" ); -// Units are pixels. Returns a positive value [most likely]. -int gtk_glwidget_font_ascent(){ - if ( !_debug_font_created ) { - Error( "Programming error: gtk_glwidget_font_ascent() called but font does not exist; " - "you should have called gtk_glwidget_create_font() first" ); - } - - return font_ascent; +GtkGLAPI(){ + m_gtkgl.glwidget_new = &glwidget_new; + m_gtkgl.glwidget_swap_buffers = &glwidget_swap_buffers; + m_gtkgl.glwidget_make_current = &glwidget_make_current; + m_gtkgl.glwidget_destroy_context = &glwidget_destroy_context; + m_gtkgl.glwidget_create_context = &glwidget_create_context; } - -// Units are pixels. Returns a positive value [most likely]. -int gtk_glwidget_font_descent(){ - if ( !_debug_font_created ) { - Error( "Programming error: gtk_glwidget_font_descent() called but font does not exist; " - "you should have called gtk_glwidget_create_font() first" ); - } - - return font_descent; +_QERGtkGLTable* getTable(){ + return &m_gtkgl; } +}; +#include "modulesystem/singletonmodule.h" +#include "modulesystem/moduleregistry.h" -void gtk_glwidget_create_font(){ - PangoFontDescription *font_desc; - PangoLayout *layout; - PangoRectangle log_rect; - int font_ascent_pango_units; - int font_descent_pango_units; - - if ( _debug_font_created ) { - Error( "Programming error: gtk_glwidget_create_font() was already called; " - "you must call gtk_glwidget_destroy_font() before creating font again" ); - } - _debug_font_created = 1; - - // This call is deprecated so we'll have to fix it sometime. - ft2_context = pango_ft2_get_context( 72, 72 ); - - font_desc = pango_font_description_from_string( font_string ); - pango_font_description_set_size( font_desc, font_height * PANGO_SCALE ); - pango_context_set_font_description( ft2_context, font_desc ); - pango_font_description_free( font_desc ); - - layout = pango_layout_new( ft2_context ); - - // I don't believe that's standard preprocessor syntax? -#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 ); - y_offset_bitmap_render_pango_units = ( font_ascent * PANGO_SCALE ) - font_ascent_pango_units; -} - -void gtk_glwidget_destroy_font(){ - if ( !_debug_font_created ) { - Error( "Programming error: gtk_glwidget_destroy_font() called when font " - "does not exist" ); - } - - font_ascent = -1; - font_descent = -1; - y_offset_bitmap_render_pango_units = -1; - g_object_unref( G_OBJECT( ft2_context ) ); - _debug_font_created = 0; -} - - -// 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". -void gtk_glwidget_print_string( 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; - - if ( !_debug_font_created ) { - Error( "Programming error: gtk_glwidget_print_string() called but font does not exist; " - "you should have called gtk_glwidget_create_font() first" ); - } - - 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 ); - qglGetFloatv( 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. - qglGetIntegerv( GL_UNPACK_ALIGNMENT, &previous_unpack_alignment ); - previous_blend_enabled = qglIsEnabled( GL_BLEND ); - qglGetIntegerv( GL_BLEND_SRC, &previous_blend_func_src ); - qglGetIntegerv( GL_BLEND_DST, &previous_blend_func_dst ); - qglGetFloatv( GL_RED_BIAS, &previous_red_bias ); - qglGetFloatv( GL_GREEN_BIAS, &previous_green_bias ); - qglGetFloatv( GL_BLUE_BIAS, &previous_blue_bias ); - qglGetFloatv( GL_ALPHA_SCALE, &previous_alpha_scale ); - - qglPixelStorei( GL_UNPACK_ALIGNMENT, 1 ); - qglEnable( GL_BLEND ); - qglBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); - qglPixelTransferf( GL_RED_BIAS, color[0] ); - qglPixelTransferf( GL_GREEN_BIAS, color[1] ); - qglPixelTransferf( GL_BLUE_BIAS, color[2] ); - qglPixelTransferf( GL_ALPHA_SCALE, color[3] ); - - qglDrawPixels( 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. - qglPixelTransferf( GL_ALPHA_SCALE, previous_alpha_scale ); - qglPixelTransferf( GL_BLUE_BIAS, previous_blue_bias ); - qglPixelTransferf( GL_GREEN_BIAS, previous_green_bias ); - qglPixelTransferf( GL_RED_BIAS, previous_red_bias ); - qglBlendFunc( previous_blend_func_src, previous_blend_func_dst ); - if ( !previous_blend_enabled ) { - qglDisable( GL_BLEND ); - } - qglPixelStorei( GL_UNPACK_ALIGNMENT, previous_unpack_alignment ); - } - - g_object_unref( G_OBJECT( layout ) ); -} - -void gtk_glwidget_print_char( char s ){ - char str[2]; - str[0] = s; - str[1] = '\0'; - gtk_glwidget_print_string( str ); -} +typedef SingletonModule GtkGLModule; +typedef Static StaticGtkGLModule; +StaticRegisterModule staticRegisterGtkGL( StaticGtkGLModule::instance() );