1 // Gmsh - Copyright (C) 1997-2021 C. Geuzaine, J.-F. Remacle 2 // 3 // See the LICENSE.txt file in the Gmsh root directory for license information. 4 // Please report all issues on https://gitlab.onelab.info/gmsh/gmsh/issues. 5 6 #ifndef DRAW_CONTEXT_FLTK_H 7 #define DRAW_CONTEXT_FLTK_H 8 9 #include "GmshConfig.h" 10 #include <algorithm> 11 #if !defined(HAVE_NO_STDINT_H) 12 #include <stdint.h> 13 #elif defined(HAVE_NO_INTPTR_T) 14 typedef unsigned long intptr_t; 15 #endif 16 #include <FL/x.H> 17 #include <FL/gl.h> 18 #include "GmshMessage.h" 19 #include "FlGui.h" 20 #include "drawContext.h" 21 #include "graphicWindow.h" 22 #include "optionWindow.h" 23 #include "openglWindow.h" 24 #include "Context.h" 25 26 class drawContextFltk : public drawContextGlobal { 27 public: 28 void draw(bool rateLimited = true) 29 { 30 if(!FlGui::available()) return; 31 if(FlGui::instance()->fullscreen->shown()) { 32 FlGui::instance()->fullscreen->make_current(); 33 FlGui::instance()->fullscreen->redraw(); 34 } 35 else { 36 for(std::size_t i = 0; i < FlGui::instance()->graph.size(); i++) { 37 for(std::size_t j = 0; j < FlGui::instance()->graph[i]->gl.size(); 38 j++) { 39 FlGui::instance()->graph[i]->gl[j]->make_current(); 40 FlGui::instance()->graph[i]->gl[j]->redraw(); 41 glFlush(); 42 // FIXME: I don't think this should be done here 43 drawContext *ctx = 44 FlGui::instance()->graph[i]->gl[j]->getDrawContext(); 45 ctx->camera.update(); 46 } 47 } 48 } 49 FlGui::check(rateLimited); 50 } drawCurrentOpenglWindow(bool make_current)51 void drawCurrentOpenglWindow(bool make_current) 52 { 53 if(!FlGui::available()) return; 54 openglWindow *gl = FlGui::instance()->getCurrentOpenglWindow(); 55 if(make_current) gl->make_current(); 56 gl->redraw(); 57 glFlush(); 58 FlGui::check(); 59 } getFontIndex(const char * fontname)60 int getFontIndex(const char *fontname) 61 { 62 if(fontname) { 63 for(int i = 0; i < NUM_FONTS; i++) 64 if(!strcmp(menu_font_names[i].label(), fontname)) return i; 65 } 66 Msg::Error("Unknown font \"%s\" (using \"Helvetica\" instead)", fontname); 67 Msg::Info("Available fonts:"); 68 for(int i = 0; i < NUM_FONTS; i++) 69 Msg::Info(" \"%s\"", menu_font_names[i].label()); 70 return 4; 71 } getFontEnum(int index)72 int getFontEnum(int index) 73 { 74 if(index >= 0 && index < NUM_FONTS) 75 return (intptr_t)menu_font_names[index].user_data(); 76 return FL_HELVETICA; 77 } getFontName(int index)78 const char *getFontName(int index) 79 { 80 if(index >= 0 && index < NUM_FONTS) return menu_font_names[index].label(); 81 return "Helvetica"; 82 } getFontAlign(const char * alignstr)83 int getFontAlign(const char *alignstr) 84 { 85 if(alignstr) { 86 if(!strcmp(alignstr, "BottomLeft") || !strcmp(alignstr, "Left") || 87 !strcmp(alignstr, "left")) 88 return 0; 89 else if(!strcmp(alignstr, "BottomCenter") || 90 !strcmp(alignstr, "Center") || !strcmp(alignstr, "center")) 91 return 1; 92 else if(!strcmp(alignstr, "BottomRight") || !strcmp(alignstr, "Right") || 93 !strcmp(alignstr, "right")) 94 return 2; 95 else if(!strcmp(alignstr, "TopLeft")) 96 return 3; 97 else if(!strcmp(alignstr, "TopCenter")) 98 return 4; 99 else if(!strcmp(alignstr, "TopRight")) 100 return 5; 101 else if(!strcmp(alignstr, "CenterLeft")) 102 return 6; 103 else if(!strcmp(alignstr, "CenterCenter")) 104 return 7; 105 else if(!strcmp(alignstr, "CenterRight")) 106 return 8; 107 } 108 Msg::Error("Unknown font alignment \"%s\" (using \"Left\" instead)", 109 alignstr); 110 Msg::Info("Available font alignments:"); 111 Msg::Info(" \"Left\" (or \"BottomLeft\")"); 112 Msg::Info(" \"Center\" (or \"BottomCenter\")"); 113 Msg::Info(" \"Right\" (or \"BottomRight\")"); 114 Msg::Info(" \"TopLeft\""); 115 Msg::Info(" \"TopCenter\""); 116 Msg::Info(" \"TopRight\""); 117 Msg::Info(" \"CenterLeft\""); 118 Msg::Info(" \"CenterCenter\""); 119 Msg::Info(" \"CenterRight\""); 120 return 0; 121 } getFontSize()122 int getFontSize() 123 { 124 if(CTX::instance()->fontSize > 0) { return CTX::instance()->fontSize; } 125 else { 126 int h = Fl::h(); // main (first) screen 127 if(h < 800) 128 return 11; 129 else if(h < 1000) 130 return 12; 131 else if(h < 1200) 132 return 13; 133 else if(h < 1400) 134 return 14; 135 else if(h < 1600) 136 return 15; 137 else if(h < 1800) 138 return 16; 139 float dpih, dpiv; 140 Fl::screen_dpi(dpih, dpiv); // main (first) screen 141 int s = std::max(16, (int)(dpih / 10.)); 142 return s; 143 } 144 } setFont(int fontid,int fontsize)145 void setFont(int fontid, int fontsize) { gl_font(fontid, fontsize); } getStringWidth(const char * str)146 double getStringWidth(const char *str) { return gl_width(str); } getStringHeight()147 int getStringHeight() { return gl_height(); } getStringDescent()148 int getStringDescent() { return gl_descent(); } drawString(const char * str)149 void drawString(const char *str) { gl_draw(str); } resetFontTextures()150 void resetFontTextures() 151 { 152 #if((FL_MAJOR_VERSION == 1) && (FL_MINOR_VERSION >= 4)) || defined(__APPLE__) 153 // force font texture recomputation 154 gl_texture_pile_height(gl_texture_pile_height()); 155 #endif 156 } getName()157 std::string getName() { return "Fltk"; } 158 }; 159 160 #endif 161