Make virtual member function Fl_Image::draw_scaled(int X, int Y, int W, int H) protected rather than private.

Consequently, remove the trailing _ from its name reserved for private class members.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12433 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Bitmap.H

@@ -34,7 +34,6 @@ struct Fl_Menu_Item;
 class FL_EXPORT Fl_Bitmap : public Fl_Image {
   friend class Fl_Graphics_Driver;
 public:
-
   /** pointer to raw bitmap data */
   const uchar *array;
   /** Non-zero if array points to bitmap data allocated internally */
@@ -46,10 +45,11 @@ private:
   /** for internal use */
   fl_uintptr_t id_;
   float cache_scale_; // graphics scaling value when id_ was computed
-  virtual int draw_scaled_(int X, int Y, int W, int H);
+  
+protected:
+  virtual int draw_scaled(int X, int Y, int W, int H);
 
 public:
-
   /** The constructors create a new bitmap from the specified bitmap data */
   Fl_Bitmap(const uchar *bits, int W, int H) :
     Fl_Image(W,H,0), array(bits), alloc_array(0), id_(0), cache_scale_(1) {data((const char **)&array, 1);}

FL/Fl_Image.H

@@ -69,7 +69,6 @@ private:
   // Forbid use of copy constructor and assign operator
   Fl_Image & operator=(const Fl_Image &);
   Fl_Image(const Fl_Image &);
-  virtual int draw_scaled_(int X, int Y, int W, int H);
 
 protected:
 
@@ -105,6 +104,7 @@ protected:
 
   static void labeltype(const Fl_Label *lo, int lx, int ly, int lw, int lh, Fl_Align la);
   static void measure(const Fl_Label *lo, int &lw, int &lh);
+  virtual int draw_scaled(int X, int Y, int W, int H);
 
 public:
 
@@ -225,7 +225,9 @@ private:
   fl_uintptr_t id_;
   fl_uintptr_t mask_;
   float cache_scale_; // graphics scaling value when id_ was computed
-  virtual int draw_scaled_(int X, int Y, int W, int H);
+  
+protected:
+  virtual int draw_scaled(int X, int Y, int W, int H);
 
 public:
 

FL/Fl_Pixmap.H

@@ -42,11 +42,10 @@ class FL_EXPORT Fl_Pixmap : public Fl_Image {
   void set_data(const char * const *p);
   int prepare(int XP, int YP, int WP, int HP, int &cx, int &cy,
 			 int &X, int &Y, int &W, int &H);
-  virtual int draw_scaled_(int X, int Y, int W, int H);
 
 protected:
-
   void measure();
+  virtual int draw_scaled(int X, int Y, int W, int H);
 
 public:
 

FL/Fl_SVG_Image.H

@@ -59,8 +59,9 @@ private:
   float svg_scaling_(int W, int H);
   void rasterize_(int W, int H);
   void init_(const char *filename, char *filedata, Fl_SVG_Image *copy_source);
-  virtual int draw_scaled_(int X, int Y, int W, int H);
   Fl_SVG_Image(Fl_SVG_Image *source);
+protected:
+  virtual int draw_scaled(int X, int Y, int W, int H);
 public:
   /** Set this to \c false to allow image re-scaling that alters the image aspect ratio.
    Upon object creation, \c proportional is set to \c true, and the aspect ratio is kept constant.*/

src/Fl_Bitmap.cxx

@@ -232,7 +232,7 @@ Fl_Image *Fl_Bitmap::copy(int W, int H) {
 }
 
 
-int Fl_Bitmap::draw_scaled_(int X, int Y, int W, int H) {
+int Fl_Bitmap::draw_scaled(int X, int Y, int W, int H) {
   return (W <= w() && H <= h()) ?  fl_graphics_driver->draw_scaled(this, X, Y, W, H) : 0;
 }
 

src/Fl_Graphics_Driver.cxx

@@ -196,7 +196,7 @@ void Fl_Graphics_Driver::draw(Fl_Shared_Image *shared, int X, int Y) {
     shared->image_->draw(X, Y, shared->w(), shared->h(), 0, 0);
     return;
   }
-  if ( shared->image_->draw_scaled_(X, Y, shared->w(), shared->h()) ) return;
+  if ( shared->image_->draw_scaled(X, Y, shared->w(), shared->h()) ) return;
   if (shared->scaled_image_ && (shared->scaled_image_->w() != shared->w() || shared->scaled_image_->h() != shared->h())) {
     delete shared->scaled_image_;
     shared->scaled_image_ = NULL;

src/Fl_Image.cxx

@@ -578,14 +578,17 @@ void Fl_RGB_Image::label(Fl_Menu_Item* m) {
   m->label(_FL_IMAGE_LABEL, (const char*)this);
 }
 
-int Fl_RGB_Image::draw_scaled_(int X, int Y, int W, int H) {
+int Fl_RGB_Image::draw_scaled(int X, int Y, int W, int H) {
   return fl_graphics_driver->draw_scaled(this, X, Y, W, H);
 }
 
-// Draws the image scaled to W and H, and returns 1,
-// or returns 0 if scaled drawing is not implemented for this image.
-// Image classes can re-implement this function for specific image types.
-int Fl_Image::draw_scaled_(int X, int Y, int W, int H) {
+/** Attempts to draw the image to the current drawing surface rescaled to a given width and height.
+ This virtual member function is mostly intended for use by the FLTK library.
+ \param X,Y position of the image's top-left
+ \param W,H width and height for the drawn image
+ \return 0 if scaled drawing is not implemented for this image, non-zero if it is implemented.
+ */
+int Fl_Image::draw_scaled(int X, int Y, int W, int H) {
   return 0;
 }
 

src/Fl_Pixmap.cxx

@@ -394,7 +394,7 @@ void Fl_Pixmap::desaturate() {
   }
 }
 
-int Fl_Pixmap::draw_scaled_(int X, int Y, int W, int H) {
+int Fl_Pixmap::draw_scaled(int X, int Y, int W, int H) {
   return (W <= w() && H <= h()) ?  fl_graphics_driver->draw_scaled(this, X, Y, W, H) : 0;
 }
 

src/Fl_SVG_Image.cxx

@@ -205,7 +205,7 @@ void Fl_SVG_Image::color_average(Fl_Color c, float i) {
 }
 
 
-int Fl_SVG_Image::draw_scaled_(int X, int Y, int W, int H) {
+int Fl_SVG_Image::draw_scaled(int X, int Y, int W, int H) {
   w(W);
   h(H);
   draw(X, Y, W, H, 0, 0);