Merge of branch-1.3-Fl_Printer, with the following main changes:

 (1) adding Fl_Device class (and more) for device abstraction
 (2) adding Fl_Pinter class (and more) for printing support.

Todo: Code cleanup, update dependencies, remove/replace test print window.
I'm looking into converting the test window popup in a global shortcut
that would pop up the print dialog now...


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7263 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 160 insertions, 0 deletions

diff --git a/src/Fl_Device.cxx b/src/Fl_Device.cxx
new file mode 100644
index 000000000..03e8367ac
--- /dev/null
+++ b/src/Fl_Device.cxx
@@ -0,0 +1,160 @@
+/*
+ *  Fl_Device.cxx
+ *
+ */
+
+#include <FL/Fl.H>
+#include <FL/Fl_Device.H>
+#include <FL/Fl_Printer.H>
+#include <FL/fl_draw.H>
+#include <FL/Fl_Image.H>
+
+extern Fl_Device *fl_device;
+
+void Fl_Device::draw(Fl_Pixmap *pxm,int XP, int YP, int WP, int HP, int cx, int cy)
+{
+  // presently, never gets called
+}
+
+void Fl_Device::draw(Fl_Bitmap *bm,int XP, int YP, int WP, int HP, int cx, int cy)
+{
+  // presently, never gets called
+}
+
+void Fl_Device::draw(Fl_RGB_Image *rgb,int XP, int YP, int WP, int HP, int cx, int cy)
+{
+  // presently, never gets called
+}
+
+void Fl_Virtual_Printer::print_widget(Fl_Widget* widget, int delta_x, int delta_y) 
+{ 
+  int old_x, old_y, new_x, new_y, is_window;
+  if ( ! widget->visible() ) return;
+  is_window = (widget->as_window() != NULL);
+  widget->damage(FL_DAMAGE_ALL);
+  // set origin to the desired top-left position of the widget
+  origin(&old_x, &old_y);
+  new_x = old_x + delta_x;
+  new_y = old_y + delta_y;
+  if (!is_window) {
+    new_x -= widget->x();
+    new_y -= widget->y();
+  }
+  if (new_x != old_x || new_y != old_y) {
+    translate(new_x - old_x, new_y - old_y );
+  }
+  // if widget is a window, clip all drawings to the window area
+  if (is_window) fl_push_clip(0, 0, widget->w(), widget->h() );
+#ifdef __APPLE__
+  CGContextRef save_gc = fl_gc;
+#elif defined(WIN32) // && !defined(__CYGWIN__)
+  HDC save_gc = fl_gc;
+#else
+  _XGC *save_gc = fl_gc;	// FIXME
+#endif
+  widget->draw();
+  fl_gc = save_gc;
+  if (is_window) fl_pop_clip();
+  // find subwindows of widget and print them
+  traverse(widget);
+  // reset origin to where it was
+  if (new_x != old_x || new_y != old_y) {
+    untranslate();
+  }
+}
+
+
+void Fl_Virtual_Printer::traverse(Fl_Widget *widget)
+{
+  Fl_Group *g = widget->as_group();
+  if (!g) return;
+  int n = g->children();
+  for (int i = 0; i < n; i++) {
+    Fl_Widget *c = g->child(i);
+    if ( !c->visible() ) continue;
+    if ( c->as_window() ) {
+      print_widget(c, c->x(), c->y());
+    }
+    else traverse(c);
+  }
+}
+
+void Fl_Virtual_Printer::origin(int *x, int *y)
+{
+  if (x) *x = x_offset;
+  if (y) *y = y_offset;
+}
+
+void Fl_Virtual_Printer::print_window_part(Fl_Window *win, int x, int y, int w, int h, int delta_x, int delta_y)
+{
+  Fl_Device::display_device()->set_current();
+  Fl_Window *save_front = Fl::first_window();
+  win->show();
+  Fl::check();
+  win->make_current();
+  uchar *image_data = fl_read_image(NULL, x, y, w, h);
+  save_front->show();
+  this->set_current();
+  Fl_RGB_Image *image = new Fl_RGB_Image(image_data, w, h);
+  image->draw(delta_x, delta_y);
+  add_image(image, image_data);
+}
+
+void Fl_Virtual_Printer::add_image(Fl_Image *image, const uchar *data)
+{
+  struct chain_elt *elt =  (struct chain_elt *)calloc(sizeof(struct chain_elt), 1);
+  elt->image = image;
+  elt->data = data;
+  if (image_list_) { elt->next = image_list_; }
+  image_list_ = elt;
+}
+
+void Fl_Virtual_Printer::delete_image_list()
+{
+  while(image_list_) {
+    struct chain_elt *next = image_list_->next;
+    delete image_list_->image;
+    if (image_list_->data) delete image_list_->data;
+    free(image_list_);
+    image_list_ = next;
+  }
+}
+
+Fl_Device *Fl_Virtual_Printer::set_current(void)
+{
+#ifdef __APPLE__
+  fl_gc = (CGContextRef)gc;
+#elif defined(WIN32)
+  fl_gc = (HDC)gc;
+#else
+  fl_gc = (_XGC*)gc;
+#endif
+  return this->Fl_Device::set_current();
+}
+
+
+int Fl_Virtual_Printer::start_job(int pagecount, int *frompage, int *topage) {return 1;}
+int Fl_Virtual_Printer::start_page (void) {return 1;}
+int Fl_Virtual_Printer::printable_rect(int *w, int *h) {return 1;}
+void Fl_Virtual_Printer::margins(int *left, int *top, int *right, int *bottom) {}
+void Fl_Virtual_Printer::origin(int x, int y) {}
+void Fl_Virtual_Printer::scale (float scale_x, float scale_y) {}
+void Fl_Virtual_Printer::rotate(float angle) {}
+int Fl_Virtual_Printer::end_page (void) {return 1;}
+void Fl_Virtual_Printer::end_job (void) {}
+void Fl_Virtual_Printer::translate(int x, int y) {}
+void Fl_Virtual_Printer::untranslate(void) {}
+
+extern Fl_Device *fl_device;
+
+Fl_Device *Fl_Device::set_current(void)
+{
+  Fl_Device *current = fl_device;
+  fl_device = this;
+  return current;
+}
+
+Fl_Device *Fl_Device::current(void)
+{
+  return fl_device;
+}