New member function Fl_Image::scale(int width, int height) to set the FLTK size of an image.

Each image has now two sizes implemented as follows:
   - the pixel size is stored in private members pixel_w_ and pixel_h_
    with public accessors pixel_w() and pixel_h()
   - the FLTK size is stored in private members w_ and h_ and read by w() and h()
   - when the image is constructed, the two sizes have the same value
   - the protected w(int) and h(int) member functions set both FLTK and pixel sizes.
   - the public scale(int, int) member function is essentially nothing but
   set the FLTK size and don't change the pixel size.
   - when the image is drawn, its FLTK size determines how big it is drawn, its pixel
   size determines how much data are available to draw it.

FLTK 1.3.4 with FL_ABI_VERSION=10304 contained an equivalent member function
but only for the Fl_Shared_Image class.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12776 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 5 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index 653e597a1..a71f3f982 100644
--- a/CHANGES
+++ b/CHANGES
@@ -18,6 +18,11 @@ Changes in FLTK 1.4.0					Released: ??? ?? 2017
   New Features and Extensions
 
   - (add new items here)
+  - New member function Fl_Image::scale(int width, int height) to set
+    the drawing size of an image independently from its pixel size. The
+    same function was previously available only for class Fl_Shared_Image
+    and with FL_ABI_VERSION >= 10304. New member functions Fl_Image::pixel_w()
+    and Fl_Image::pixel_h() give the size in pixels of an image.
   - OpenGL draws text using textures on all platforms, when the necessary
     hardware support is present (a backup mechanism is available in absence
     of this support). Thus, all text drawable in Fl_Window's can be drawn