diff options
Diffstat (limited to 'src/Fl_Graphics_Driver.cxx')
| -rw-r--r-- | src/Fl_Graphics_Driver.cxx | 27 |
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; |