Adding embedded documentation to Fluid if installed odcs are not found. Falls back to the internet if that does not exist either. Also, adds JPEG and PNG images to the Shared Image list if they were loaded from memory - see example use in fluid.cxx which loads and embedded html document containing an embedded PNG image.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8306 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

4 files changed, 639 insertions, 5 deletions

diff --git a/fluid/about_panel.cxx b/fluid/about_panel.cxx
index 72ff59091..c2cbd04dc 100644
--- a/fluid/about_panel.cxx
+++ b/fluid/about_panel.cxx
@@ -300,6 +300,586 @@ Fl_Double_Window* make_about_panel() {
   } // Fl_Double_Window* about_panel
   return about_panel;
 }
+/**
+   Embedded image for internal fluid.html web page.
+*/
+unsigned char fluid_org_png[12690] = /* binary data included from ../documentation/src/fluid-org.png */
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+113,201,14,72,249,4,61,158,98,48,17,137,143,38,156,120,173,15,186,78,186,117,
+226,219,140,119,106,122,198,166,45,198,57,241,243,45,70,173,80,165,49,187,34,
+160,46,44,80,186,100,169,188,198,164,12,136,38,226,170,93,70,226,149,58,234,91,
+204,242,173,168,235,246,215,164,197,196,210,98,204,130,220,13,149,80,165,33,187,
+34,160,229,160,60,136,232,75,114,180,203,0,61,36,149,184,106,220,121,36,94,153,
+231,201,104,49,241,57,45,230,162,135,111,40,74,231,132,98,85,148,169,76,174,55,
+107,64,68,64,44,133,202,220,244,97,190,167,2,170,156,223,98,226,51,90,140,90,
+161,74,35,118,197,162,40,71,56,135,146,18,29,75,40,41,165,87,57,241,227,184,170,
+178,62,158,164,22,195,25,45,70,37,84,105,192,46,61,14,33,17,208,35,38,161,39,
+227,75,14,107,93,50,101,125,236,79,139,209,182,164,52,98,219,31,137,241,227,96,
+8,39,198,35,245,72,164,76,89,76,44,143,131,171,178,163,46,252,122,217,151,22,
+163,125,161,202,185,172,123,138,184,85,239,206,216,171,4,148,229,114,35,92,120,
+32,173,50,65,123,164,244,164,2,100,64,1,42,160,107,102,159,90,140,90,161,202,
+57,108,251,227,0,238,113,152,44,17,113,72,68,143,129,140,139,119,57,125,137,60,
+20,133,246,130,174,153,253,106,49,106,133,42,231,80,55,185,194,182,48,253,56,
+184,14,255,136,62,137,140,46,73,165,96,110,76,72,130,1,10,181,26,214,206,126,
+181,24,109,79,202,142,82,62,12,206,10,240,129,3,18,160,79,68,72,79,30,133,148,
+129,244,103,197,32,227,75,86,41,42,162,236,46,235,105,49,42,161,74,35,182,199,
+57,43,237,155,235,140,157,40,151,26,157,144,211,147,42,143,7,146,152,50,32,36,
+149,202,160,110,34,91,149,207,205,176,47,45,70,37,84,57,151,81,89,104,118,139,
+156,179,23,170,37,159,114,116,179,79,204,1,41,125,6,210,159,117,40,169,42,206,
+170,48,100,68,58,30,105,3,236,83,139,81,9,85,206,165,224,17,25,67,78,121,192,41,
+63,224,62,247,184,207,15,120,192,61,30,240,136,83,134,140,24,2,5,163,13,222,87,
+200,72,156,173,16,95,98,170,110,186,176,62,125,6,12,164,190,78,57,30,169,208,72,
+252,134,216,167,22,163,18,170,156,67,110,11,220,191,17,35,50,134,140,24,49,162,
+32,195,213,249,42,39,236,130,33,241,6,239,44,146,132,20,87,255,51,145,26,143,
+125,41,104,231,10,219,245,73,166,234,60,42,235,103,191,90,140,74,168,114,46,1,
+195,170,15,41,151,193,112,62,6,15,131,71,224,254,86,3,57,238,239,124,136,115,
+229,214,107,95,132,114,31,101,209,186,62,33,125,201,234,27,112,56,49,63,146,142,
+71,218,52,251,212,98,180,101,41,231,82,80,128,52,239,114,6,242,28,131,79,64,34,
+83,184,229,128,149,137,99,33,199,39,146,229,146,225,74,247,224,79,93,29,32,32,
+43,43,126,202,232,230,114,138,143,152,67,14,164,230,120,40,46,25,26,72,218,32,
+251,212,98,84,66,149,6,24,50,168,146,65,66,30,17,82,240,152,152,144,135,24,10,
+114,44,5,9,62,57,101,195,45,223,81,189,3,38,214,180,161,60,111,94,189,135,20,
+111,98,132,115,74,32,142,88,79,28,179,144,144,144,8,131,10,232,166,217,159,22,
+163,18,170,52,196,185,65,5,33,62,33,7,184,124,186,199,128,179,55,50,192,2,22,79,
+150,192,195,226,49,27,150,93,70,203,60,10,60,121,45,207,224,38,12,115,227,156,
+93,157,199,1,129,60,14,137,20,141,0,227,6,234,169,128,110,156,253,104,49,42,
+161,202,185,56,231,39,147,101,159,136,20,215,213,62,194,144,48,164,192,48,154,
+178,32,230,113,219,252,115,175,214,4,231,10,122,184,7,34,150,244,20,23,95,29,
+208,35,32,38,162,71,153,217,167,108,150,125,106,49,42,161,74,3,10,137,164,70,64,
+90,53,251,135,36,18,8,64,220,182,172,166,241,141,103,231,50,51,239,219,96,102,
+222,21,148,54,133,71,12,50,63,124,74,74,64,68,130,207,0,170,233,194,212,6,221,
+52,251,211,98,84,66,149,115,240,189,92,102,69,7,23,20,8,1,31,159,1,143,73,201,
+170,56,170,171,123,51,75,81,173,155,126,20,218,218,134,69,205,17,33,1,30,1,33,
+49,134,132,68,172,137,80,250,187,34,50,77,101,218,56,251,213,98,84,66,149,6,
+148,142,153,123,20,18,30,242,24,159,2,31,143,83,217,103,147,41,210,80,166,201,
+20,24,2,18,220,180,13,177,36,76,199,82,72,66,235,130,94,20,251,211,98,116,18,
+100,165,1,185,45,211,162,31,51,226,49,57,35,10,78,41,200,197,146,200,200,136,40,
+168,31,209,55,14,16,76,183,206,182,227,255,188,42,232,96,196,53,27,87,29,47,199,
+155,132,24,18,138,178,14,164,10,232,133,176,63,45,70,173,80,165,17,6,35,61,87,
+33,33,143,101,156,177,179,35,10,16,183,45,155,106,80,89,135,215,175,111,168,46,
+105,27,168,108,9,100,174,111,117,224,47,154,125,105,49,106,133,42,141,200,45,50,
+64,207,189,142,40,29,177,188,138,156,78,231,225,173,31,191,138,214,134,50,76,
+48,168,102,251,214,146,118,23,205,190,180,24,181,66,149,134,248,30,182,156,10,
+214,245,39,13,49,27,46,19,49,143,155,93,49,144,123,114,225,3,141,194,111,7,251,
+209,98,212,10,85,26,147,91,40,135,221,21,242,154,49,46,198,80,212,58,98,221,253,
+149,54,51,67,254,2,2,10,121,16,138,137,135,193,247,180,160,221,118,176,15,45,70,
+37,84,105,137,123,44,138,42,243,207,165,80,151,237,168,140,107,150,116,213,190,
+202,12,193,96,106,157,203,45,44,164,223,13,84,62,183,145,39,187,197,168,132,42,
+173,200,103,66,162,133,196,57,199,89,123,227,80,65,151,140,175,82,76,173,157,68,
+165,115,27,121,210,91,140,74,168,178,2,249,150,84,37,87,241,220,21,158,188,22,
+163,18,170,40,138,178,52,90,129,65,81,20,101,105,84,66,21,69,81,150,70,37,84,81,
+20,101,105,84,66,21,69,81,150,230,255,3,208,41,110,136,142,26,22,144,0,0,0,0,
+73,69,78,68,174,66,96,130};
 
 //
 // End of "$Id$".
diff --git a/fluid/about_panel.fl b/fluid/about_panel.fl
index 99f13404f..341a7220d 100644
--- a/fluid/about_panel.fl
+++ b/fluid/about_panel.fl
@@ -34,10 +34,9 @@ comment {//
 decl {void show_help(const char *name);} {public local
 } 
 
-Function {make_about_panel()} {open
-} {
+Function {make_about_panel()} {} {
   Fl_Window about_panel {
-    label {About FLUID} open selected
+    label {About FLUID} open
     xywh {419 216 345 180} type Double color 50 selection_color 47 hotspot non_modal visible
   } {
     Fl_Box {} {
@@ -67,6 +66,10 @@ Bill Spitzak and others}
   }
 } 
 
+data fluid_org_png {
+  comment {Embedded image for internal fluid.html web page.} public local filename {../documentation/src/fluid-org.png}
+} 
+
 comment {
 //
 // End of "$Id$".
diff --git a/fluid/about_panel.h b/fluid/about_panel.h
index eb154b091..52d7a578c 100644
--- a/fluid/about_panel.h
+++ b/fluid/about_panel.h
@@ -37,6 +37,7 @@ extern Fl_Double_Window *about_panel;
 #include <FL/Fl_Button.H>
 #include <FL/Fl_Return_Button.H>
 Fl_Double_Window* make_about_panel();
+extern unsigned char fluid_org_png[12690];
 #endif
 
 //
diff --git a/fluid/fluid.cxx b/fluid/fluid.cxx
index 53306f8bd..32faa0736 100644
--- a/fluid/fluid.cxx
+++ b/fluid/fluid.cxx
@@ -38,6 +38,7 @@
 #include <FL/fl_ask.H>
 #include <FL/fl_draw.H>
 #include <FL/Fl_File_Chooser.H>
+#include <FL/Fl_PNG_Image.H>
 #include <FL/fl_message.H>
 #include <FL/filename.H>
 #include <stdio.h>
@@ -866,7 +867,56 @@ void show_help(const char *name) {
   }
   snprintf(helpname, sizeof(helpname), "%s/%s", docdir, name);
 
-  help_dialog->load(helpname);
+  // make sure that we can read the file
+  FILE *f = fopen(helpname, "rb");
+  if (f) {
+    fclose(f);
+    help_dialog->load(helpname);
+  } else {
+    // if we can not read the file, we display the canned version instead
+    // or ask the native browser to open the page on www.fltk.org
+    if (strcmp(name, "fluid.html")==0) {
+      if (!Fl_Shared_Image::find("embedded:/fluid-org.png"))
+        new Fl_PNG_Image("embedded:/fluid-org.png", fluid_org_png, sizeof(fluid_org_png));
+      help_dialog->value
+      (
+       "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n"
+       "<html><head><title>FLTK: Programming with FLUID</title></head><body>\n"
+       "<h2>What is FLUID?</h2>\n"
+       "The Fast Light User Interface Designer, or FLUID, is a graphical editor "
+       "that is used to produce FLTK source code. FLUID edits and saves its state "
+       "in <code>.fl</code> files. These files are text, and you can (with care) "
+       "edit them in a text editor, perhaps to get some special effects.<p>\n"
+       "FLUID can \"compile\" the <code>.fl</code> file into a <code>.cxx</code> "
+       "and a <code>.h</code> file. The <code>.cxx</code> file defines all the "
+       "objects from the <code>.fl</code> file and the <code>.h</code> file "
+       "declares all the global ones. FLUID also supports localization "
+       "(Internationalization) of label strings using message files and the GNU "
+       "gettext or POSIX catgets interfaces.<p>\n"
+       "A simple program can be made by putting all your code (including a <code>"
+       "main()</code> function) into the <code>.fl</code> file and thus making the "
+       "<code>.cxx</code> file a single source file to compile. Most programs are "
+       "more complex than this, so you write other <code>.cxx</code> files that "
+       "call the FLUID functions. These <code>.cxx</code> files must <code>"
+       "#include</code> the <code>.h</code> file or they can <code>#include</code> "
+       "the <code>.cxx</code> file so it still appears to be a single source file.<p>"
+       "<img src=\"embedded:/fluid-org.png\"></p>"
+       "<p>More information is available online at <a href="
+       "\"http://www.fltk.org/doc-1.3/fluid.html\">http://www.fltk.org/</a>"
+       "</body></html>"
+       );
+    } else if (strcmp(name, "license.html")==0) {
+      fl_open_uri("http://www.fltk.org/doc-1.3/license.html");
+      return;
+    } else if (strcmp(name, "index.html")==0) {
+      fl_open_uri("http://www.fltk.org/doc-1.3/index.html");
+      return;
+    } else {
+      snprintf(helpname, sizeof(helpname), "http://www.fltk.org/%s", name);
+      fl_open_uri(helpname);
+      return;
+    }
+  }
   help_dialog->show();
 }
 
@@ -875,7 +925,7 @@ void help_cb(Fl_Widget *, void *) {
 }
 
 void manual_cb(Fl_Widget *, void *) {
-  show_help("main.html");
+  show_help("index.html");
 }