[client] added initial code for rendering the cursor shape

client/lg-renderer.h

@@ -30,6 +30,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
    (x)->deinitialize   && \
    (x)->is_compatible  && \
    (x)->on_resize      && \
+   (x)->on_mouse_shape && \
    (x)->on_mouse_event && \
    (x)->render)
 
@@ -62,11 +63,20 @@ typedef struct LG_RendererRect
 }
 LG_RendererRect;
 
+typedef enum LG_RendererCursor
+{
+  LG_CURSOR_COLOR       ,
+  LG_CURSOR_MONOCHROME  ,
+  LG_CURSOR_MASKED_COLOR
+}
+LG_RendererCursor;
+
 typedef const char * (* LG_RendererGetName       )();
 typedef bool         (* LG_RendererInitialize    )(void ** opaque, const LG_RendererParams params, const LG_RendererFormat format);
 typedef void         (* LG_RendererDeInitialize  )(void * opaque);
 typedef bool         (* LG_RendererIsCompatible  )(void * opaque, const LG_RendererFormat format);
 typedef void         (* LG_RendererOnResize      )(void * opaque, const int width, const int height, const LG_RendererRect destRect);
+typedef bool         (* LG_RendererOnMouseShape  )(void * opaque, const LG_RendererCursor cursor, const int width, const int height, const uint8_t * data);
 typedef bool         (* LG_RendererOnMouseEvent  )(void * opaque, const bool visible , const int x, const int y);
 typedef bool         (* LG_RendererOnFrameEvent  )(void * opaque, const uint8_t * data, bool resample);
 typedef bool         (* LG_RendererRender        )(void * opaque);
@@ -78,6 +88,7 @@ typedef struct LG_Renderer
   LG_RendererDeInitialize deinitialize;
   LG_RendererIsCompatible is_compatible;
   LG_RendererOnResize     on_resize;
+  LG_RendererOnMouseShape on_mouse_shape;
   LG_RendererOnMouseEvent on_mouse_event;
   LG_RendererOnFrameEvent on_frame_event;
   LG_RendererRender       render;

client/main.c

@@ -317,6 +317,31 @@ int renderThread(void * unused)
 
       if (header.cursor.flags & KVMFR_CURSOR_FLAG_SHAPE)
       {
+        LG_RendererCursor c = LG_CURSOR_COLOR;
+        switch(header.cursor.type)
+        {
+          case CURSOR_TYPE_COLOR       : c = LG_CURSOR_COLOR       ; break;
+          case CURSOR_TYPE_MONOCHROME  : c = LG_CURSOR_MONOCHROME  ; break;
+          case CURSOR_TYPE_MASKED_COLOR: c = LG_CURSOR_MASKED_COLOR; break;
+          default:
+            DEBUG_ERROR("Invalid cursor type");
+            break;
+        }
+
+        if (state.lgr)
+        {
+          if (!state.lgr->on_mouse_shape(
+            state.lgrData,
+            c,
+            header.cursor.w,
+            header.cursor.h,
+            header.cursor.shape
+          ))
+          {
+            DEBUG_ERROR("Failed to update mouse shape");
+            break;
+          }
+        }
       }
 
       if (state.lgr)

client/renderers/opengl.c

@@ -277,6 +277,15 @@ void lgr_opengl_on_resize(void * opaque, const int width, const int height, cons
   this->resizeWindow  = true;
 }
 
+bool lgr_opengl_on_mouse_shape(void * opaque, const LG_RendererCursor cursor, const int width, const int height, const uint8_t * data)
+{
+  struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
+  if (!this || !this->initialized)
+    return false;
+
+  return true;
+}
+
 bool lgr_opengl_on_mouse_event(void * opaque, const bool visible, const int x, const int y)
 {
   struct LGR_OpenGL * this = (struct LGR_OpenGL *)opaque;
@@ -576,6 +585,7 @@ const LG_Renderer LGR_OpenGL =
   .deinitialize   = lgr_opengl_deinitialize,
   .is_compatible  = lgr_opengl_is_compatible,
   .on_resize      = lgr_opengl_on_resize,
+  .on_mouse_shape = lgr_opengl_on_mouse_shape,
   .on_mouse_event = lgr_opengl_on_mouse_event,
   .on_frame_event = lgr_opengl_on_frame_event,
   .render         = lgr_opengl_render