[freetype2-demos] GSoC-2020-anuj 0764d44 4/5: [ftsdf] Added function to process window events.

[Anuj Verma]

branch: GSoC-2020-anuj
commit 0764d446b6d613c4c6c3993d7aba037fe6c02f20
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Commit: Anuj Verma <anujv@iitbhilai.ac.in>

    [ftsdf] Added function to process window events.
    
    * src/ftsdf.c (Process_Event): The function receives window events and 
process them
      accordingly.
---
 src/ftsdf.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)

diff --git a/src/ftsdf.c b/src/ftsdf.c
index e2e9574..304a9f9 100644
--- a/src/ftsdf.c
+++ b/src/ftsdf.c
@@ -219,5 +219,125 @@
     }
   }
 
+  static int
+  Process_Event()
+  {
+    /* The function listens to the events on the display */
+    /* and processes them if any event is received.      */
+
+    grEvent  event;
+    int      ret = 0;
+    int      speed = 10 * status.scale;
+
+    grListenSurface( display->surface, 0, &event );
+
+    switch (event.key) {
+    case grKEY( 'q' ):
+    case grKeyEsc:
+      ret = 1;
+      break;
+    case grKEY( 'z' ):
+      status.scale++;
+      break;
+    case grKEY( 'x' ):
+      status.scale--;
+      if ( status.scale < 1 )
+        status.scale = 1;
+      break;
+    case grKeyPageUp:
+      status.ptsize += 24;
+    case grKeyUp:
+      status.ptsize++;
+      if ( status.ptsize > 512 )
+        status.ptsize = 512;
+      event_font_update();
+      break;
+    case grKeyPageDown:
+      status.ptsize -= 24;
+    case grKeyDown:
+      status.ptsize--;
+      if ( status.ptsize < 8 )
+        status.ptsize = 8;
+      event_font_update();
+      break;
+    case grKEY( 'o' ):
+      status.spread++;
+      if ( status.spread > 32 )
+        status.spread = 32;
+      event_font_update();
+      break;
+    case grKEY( 'l' ):
+      status.spread--;
+      if ( status.spread < 2 )
+        status.spread = 2;
+      event_font_update();
+      break;
+    case grKeyF8:
+      status.glyph_index += 450;
+    case grKeyF6:
+      status.glyph_index += 49;
+    case grKeyRight:
+      status.glyph_index++;
+      event_font_update();
+      break;
+    case grKeyF7:
+      status.glyph_index -= 450;
+    case grKeyF5:
+      status.glyph_index -= 49;
+    case grKeyLeft:
+      status.glyph_index--;
+      if ( status.glyph_index < 0 )
+        status.glyph_index = 0;
+      event_font_update();
+      break;
+    case grKEY( 'b' ):
+      status.use_bitmap = !status.use_bitmap;
+      event_font_update();
+      break;
+    case grKEY( 'f' ):
+      status.nearest_filtering = !status.nearest_filtering;
+      break;
+    case grKEY( 'r' ):
+      status.reconstruct = !status.reconstruct;
+      break;
+    case grKEY( 'i' ):
+      status.width += 0.5f;
+      break;
+    case grKEY( 'k' ):
+      status.width -= 0.5f;
+      break;
+    case grKEY( 'u' ):
+      status.edge += 0.2f;
+      break;
+    case grKEY( 'j' ):
+      status.edge -= 0.2f;
+      break;
+    case grKEY( 'd' ):
+      status.x_offset += speed;
+      break;
+    case grKEY( 'a' ):
+      status.x_offset -= speed;
+      break;
+    case grKEY( 's' ):
+      status.y_offset -= speed;
+      break;
+    case grKEY( 'w' ):
+      status.y_offset += speed;
+      break;
+    case grKEY( 'm' ):
+      status.overlaps = !status.overlaps;
+      event_font_update();
+      break;
+    case grKEY( '?' ):
+    case grKEY( '/' ):
+    case grKeyF1:
+      event_help();
+      break;
+    default:
+        break;
+    }
+
+    return ret;
+  }
 
 /* END */