Added new method Fl_Copy_Surface::draw_decorated_window()

that copies a window to the clipboard together with its title bar and borders.
This requires very little new code because the capture of window decorations
is shared with the Fl_Paged_Device::print window() method.
The device test program is changed to call the new method.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10928 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/Fl_Copy_Surface.H

@@ -76,6 +76,7 @@ public:
   ~Fl_Copy_Surface();
   void set_current();
   void draw(Fl_Widget* widget, int delta_x = 0, int delta_y = 0);
+  void draw_decorated_window(Fl_Window* win, int delta_x = 0, int delta_y = 0);
   /** Returns the pixel width of the copy surface */
   int w() { return width; }
   /** Returns the pixel height of the copy surface */

FL/Fl_Paged_Device.H

@@ -36,6 +36,10 @@
  or Fl_PostScript_File_Device instead.
  */
 class FL_EXPORT Fl_Paged_Device : public Fl_Surface_Device {
+#ifndef __APPLE__
+  friend class Fl_Copy_Surface;
+  void draw_decorated_window(Fl_Window *win, int x_offset, int y_offset, Fl_Surface_Device *toset);
+#endif
 public:
   /**
    \brief Possible page formats.

src/Fl_Copy_Surface.cxx

@@ -211,6 +211,14 @@ void Fl_Copy_Surface::prepare_copy_pdf_and_tiff(int w, int h)
 
 #endif  // __APPLE__
 
+#if !defined(__APPLE__)
+/** Copies a window and its borders and title bar to the clipboard. */
+void Fl_Copy_Surface::draw_decorated_window(Fl_Window* win, int delta_x, int delta_y)
+{
+  helper->draw_decorated_window(win, delta_x, delta_y, this);
+}
+#endif
+
 #if !(defined(__APPLE__) || defined(WIN32) || defined(FL_DOXYGEN))
 /* graphics driver that translates all graphics coordinates before calling Xlib */
 class Fl_translated_Xlib_Graphics_Driver_ : public Fl_Xlib_Graphics_Driver {

src/Fl_cocoa.mm

@@ -3855,6 +3855,45 @@ - (void)terminate:(id)sender
 }
 @end
 
+
+void Fl_Copy_Surface::draw_decorated_window(Fl_Window* win, int delta_x, int delta_y)
+{
+  int bx, by, bt;
+  get_window_frame_sizes(bx, by, bt);
+  draw(win, 0, bt); // draw the window content
+  if (win->border()) {
+    // draw the window title bar
+    CGContextSaveGState(gc);
+    CGContextTranslateCTM(gc, 0, bt);
+    CGContextScaleCTM(gc, 1, -1);
+    Fl_X::clip_to_rounded_corners(gc, win->w(), bt);
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    CALayer *layer = fl_mac_os_version >= 101000 ?
+    [[[fl_xid(win) standardWindowButton:NSWindowCloseButton] superview] layer] : nil; // 10.5
+    if (layer) {
+      CGColorSpaceRef cspace = CGColorSpaceCreateDeviceRGB();
+      // for unknown reason, rendering the layer to the Fl_Copy_Surface pdf graphics context does not work;
+      // we use an auxiliary bitmap context
+      CGContextRef auxgc = CGBitmapContextCreate(NULL, win->w(), bt, 8, 0, cspace, kCGImageAlphaPremultipliedLast);
+      CGColorSpaceRelease(cspace);
+      CGContextClearRect(auxgc, CGRectMake(0, 0, win->w(), bt));
+      CGContextTranslateCTM(auxgc, 0, bt);
+      CGContextScaleCTM(auxgc, 1, -1);
+      [layer renderInContext:auxgc]; // 10.5
+      fl_draw_image((uchar*)CGBitmapContextGetData(auxgc), 0, 0, win->w(), bt, 4, CGBitmapContextGetBytesPerRow(auxgc));
+      CGContextRelease(auxgc);
+    } else
+#endif
+    {
+      CGImageRef img = Fl_X::CGImage_from_window_rect(win, 0, -bt, win->w(), bt);
+      CGContextDrawImage(gc, CGRectMake(0, 0, win->w(), bt), img);
+      CFRelease(img);
+    }
+    CGContextRestoreGState(gc);
+  }
+}
+
+
 static void createAppleMenu(void)
 {
   static BOOL donethat = NO;

src/Fl_win32.cxx

@@ -2731,10 +2731,14 @@ int Fl_Window::decorated_h()
 
 void Fl_Paged_Device::print_window(Fl_Window *win, int x_offset, int y_offset)
 {
-  if (!win->shown() || win->parent() || !win->border() || !win->visible()) {
-    this->print_widget(win, x_offset, y_offset);
-    return;
-  }
+  if (!win->shown() || win->parent() || !win->border() || !win->visible())
+    print_widget(win, x_offset, y_offset);
+  else
+    draw_decorated_window(win, x_offset, y_offset, this);
+}
+
+void Fl_Paged_Device::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset, Fl_Surface_Device *toset)
+{
   int X, Y, bt, bx, by, ww, wh; // compute the window border sizes
   Fl_X::fake_X_wm(win, X, Y, bt, bx, by);
   ww = win->w() + 2 * bx;
@@ -2757,21 +2761,17 @@ void Fl_Paged_Device::print_window(Fl_Window *win, int x_offset, int y_offset)
   Window save_win = fl_window;
   fl_window = NULL; // force use of read_win_rectangle() by fl_read_image()
   uchar *top_image = fl_read_image(NULL, r.left, r.top, ww, bt + by);
-  uchar *left_image = fl_read_image(NULL, r.left, r.top, bx, wh);
-  uchar *right_image = fl_read_image(NULL, r.right - bx, r.top, bx, wh);
-  uchar *bottom_image = fl_read_image(NULL, r.left, r.bottom-by, ww, by);
+  uchar *left_image = bx ? fl_read_image(NULL, r.left, r.top, bx, wh) : NULL;
+  uchar *right_image = bx ? fl_read_image(NULL, r.right - bx, r.top, bx, wh) : NULL;
+  uchar *bottom_image = by ? fl_read_image(NULL, r.left, r.bottom-by, ww, by) : NULL;
   fl_window = save_win;
   ReleaseDC(NULL, fl_gc);  fl_gc = save_gc;
-  this->set_current();
+  toset->set_current();
   // print the 4 window sides
-  fl_draw_image(top_image, x_offset, y_offset, ww, bt + by, 3);
-  fl_draw_image(left_image, x_offset, y_offset, bx, wh, 3);
-  fl_draw_image(right_image, x_offset + win->w() + bx, y_offset, bx, wh, 3);
-  fl_draw_image(bottom_image, x_offset, y_offset + win->h() + bt + by, ww, by, 3);
-  delete[] top_image;
-  delete[] left_image;
-  delete[] right_image;
-  delete[] bottom_image;
+  fl_draw_image(top_image, x_offset, y_offset, ww, bt + by, 3); delete[] top_image;
+  if (left_image) { fl_draw_image(left_image, x_offset, y_offset, bx, wh, 3); delete left_image; }
+  if (right_image) { fl_draw_image(right_image, x_offset + win->w() + bx, y_offset, bx, wh, 3); delete right_image; }
+  if (bottom_image) { fl_draw_image(bottom_image, x_offset, y_offset + win->h() + bt + by, ww, by, 3); delete bottom_image; }
   // print the window inner part
   this->print_widget(win, x_offset + bx, y_offset + bt + by);
   fl_gc = GetDC(fl_xid(win));
@@ -2819,14 +2819,30 @@ void printFront(Fl_Widget *o, void *data)
   o->window()->show();
 }
 
+#include <FL/Fl_Copy_Surface.H>
+void copyFront(Fl_Widget *o, void *data)
+{
+  o->window()->hide();
+  Fl_Window *win = Fl::first_window();
+  if (!win) return;
+  Fl_Copy_Surface *surf = new Fl_Copy_Surface(win->decorated_w() + 1, (int)(win->decorated_h() *0.985));
+  surf->set_current();
+  surf->draw_decorated_window(win); // draw the window content
+  delete surf; // put the window on the clipboard
+  Fl_Display_Device::display_device()->set_current();
+  o->window()->show();
+}
+
 void preparePrintFront(void)
 {
   static BOOL first=TRUE;
   if(!first) return;
   first=FALSE;
-  static Fl_Window w(0,0,120,30);
-  static Fl_Button b(0,0,w.w(),w.h(), "Print front window");
-  b.callback(printFront);
+  static Fl_Window w(0,0,120,60);
+  static Fl_Button bp(0,0,w.w(),30, "Print front window");
+  bp.callback(printFront);
+  static Fl_Button bc(0,30,w.w(),30, "Copy front window");
+  bc.callback(copyFront);
   w.end();
   w.show();
 }

src/Fl_x.cxx

@@ -3024,6 +3024,11 @@ void Fl_Paged_Device::print_window(Fl_Window *win, int x_offset, int y_offset)
     this->print_widget(win, x_offset, y_offset);
     return;
   }
+  draw_decorated_window(win, x_offset, y_offset, this);
+}
+
+void Fl_Paged_Device::draw_decorated_window(Fl_Window *win, int x_offset, int y_offset, Fl_Surface_Device *toset)
+{
   Fl_Display_Device::display_device()->set_current();
   win->show();
   Fl::check();
@@ -3052,7 +3057,7 @@ void Fl_Paged_Device::print_window(Fl_Window *win, int x_offset, int y_offset)
     bottom_image = fl_read_image(NULL, 0, bt + win->h(), -(win->w() + 2*bx), bx);
   }
   fl_window = from;
-  this->set_current();
+  toset->set_current();
   if (top_image) {
     fl_draw_image(top_image, x_offset, y_offset, win->w() + 2 * bx, bt, 3);
     delete[] top_image;
@@ -3110,14 +3115,29 @@ void printFront(Fl_Widget *o, void *data)
   o->window()->show();
 }
 
+#include <FL/Fl_Copy_Surface.H>
+void copyFront(Fl_Widget *o, void *data)
+{
+  o->window()->hide();
+  Fl_Window *win = Fl::first_window();
+  if (!win) return;
+  Fl_Copy_Surface *surf = new Fl_Copy_Surface(win->decorated_w(), win->decorated_h());
+  surf->set_current();
+  surf->draw_decorated_window(win); // draw the window content
+  delete surf; // put the window on the clipboard
+  o->window()->show();
+}
+
 void preparePrintFront(void)
 {
   static int first=1;
   if(!first) return;
   first=0;
-  static Fl_Window w(0,0,150,30);
-  static Fl_Button b(0,0,w.w(),w.h(), "Print front window");
-  b.callback(printFront);
+  static Fl_Window w(0,0,140,60);
+  static Fl_Button bp(0,0,w.w(),30, "Print front window");
+  bp.callback(printFront);
+  static Fl_Button bc(0,30,w.w(),30, "Copy front window");
+  bc.callback(copyFront);
   w.end();
   w.show();
 }

test/device.cxx

@@ -568,10 +568,18 @@ void copy(Fl_Widget *, void *data) {
 
 
   if (strcmp(operation, "Fl_Copy_Surface") == 0) {
-    Fl_Copy_Surface *copy_surf = new Fl_Copy_Surface(target->w()+10, target->h()+20);
-    copy_surf->set_current();
-    fl_color(FL_YELLOW);fl_rectf(0,0,copy_surf->w(), copy_surf->h());
-    copy_surf->draw(target, 5, 10);
+    Fl_Copy_Surface *copy_surf;
+    if (target->as_window() && !target->parent()) {
+      copy_surf = new Fl_Copy_Surface(target->as_window()->decorated_w(), target->as_window()->decorated_h());
+      copy_surf->set_current();
+      copy_surf->draw_decorated_window(target->as_window(), 0, 0);
+    }
+    else {
+      copy_surf = new Fl_Copy_Surface(target->w()+10, target->h()+20);
+      copy_surf->set_current();
+      fl_color(FL_YELLOW);fl_rectf(0,0,copy_surf->w(), copy_surf->h());
+      copy_surf->draw(target, 5, 10);
+    }
     delete copy_surf;
     Fl_Display_Device::display_device()->set_current();  
     }