Move Fl_Graphics_Driver::draw(Fl_Shared_Image* from Fl_Shared_Image.cxx to Fl_Graphics_Driver.cxx where it belongs.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12408 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 27 insertions, 0 deletions

diff --git a/src/Fl_Graphics_Driver.cxx b/src/Fl_Graphics_Driver.cxx
index 6ac49b196..737bffc09 100644
--- a/src/Fl_Graphics_Driver.cxx
+++ b/src/Fl_Graphics_Driver.cxx
@@ -188,6 +188,33 @@ void Fl_Graphics_Driver::set_current_() {
 }
 
 
+/** Draws an Fl_Shared_Image object using this graphics driver.
+ \param shared shared image to be drawn
+ \param X,Y top-left position of the drawn image */
+void Fl_Graphics_Driver::draw(Fl_Shared_Image *shared, int X, int Y) {
+  if ( shared->w() == shared->image_->w() && shared->h() == shared->image_->h()) {
+    shared->image_->draw(X, Y, shared->w(), shared->h(), 0, 0);
+    return;
+  }
+  // don't call Fl_Graphics_Driver::draw_scaled(Fl_Image*,...) for an enlarged Fl_Bitmap or Fl_Pixmap
+  if (shared->image_->as_rgb_image() || (shared->w() <= shared->image_->w() && shared->h() <= shared->image_->h())) {
+    int done = draw_scaled(shared->image_, X, Y, shared->w(), shared->h());
+    if (done) 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;
+  }
+  if (!shared->scaled_image_) {
+    Fl_RGB_Scaling previous = Fl_Shared_Image::RGB_scaling();
+    Fl_Shared_Image::RGB_scaling(shared->scaling_algorithm_); // useless but no harm if image_ is not an Fl_RGB_Image
+    shared->scaled_image_ = shared->image_->copy(shared->w(), shared->h());
+    Fl_Shared_Image::RGB_scaling(previous);
+  }
+  shared->scaled_image_->draw(X, Y, shared->scaled_image_->w(), shared->scaled_image_->h(), 0, 0);
+}
+
+
 #ifndef FL_DOXYGEN
 Fl_Scalable_Graphics_Driver::Fl_Scalable_Graphics_Driver() : Fl_Graphics_Driver() {
   scale_ = 1;