ref: 2c23de27d5006e969106fad672399fafe6464845
dir: /DoConfig/fltk/FL/Fl_Copy_Surface.H/
// // "$Id$" // // Copy-to-clipboard code for the Fast Light Tool Kit (FLTK). // // Copyright 1998-2014 by Bill Spitzak and others. // // This library is free software. Distribution and use rights are outlined in // the file "COPYING" which should have been included with this file. If this // file is missing or damaged, see the license at: // // http://www.fltk.org/COPYING.php // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // #ifndef Fl_Copy_Surface_H #define Fl_Copy_Surface_H #include <FL/Fl_Paged_Device.H> #include <FL/Fl_Printer.H> #include <FL/x.H> /** Supports copying of graphical data to the clipboard. <br> After creation of an Fl_Copy_Surface object, call set_current() on it, and all subsequent graphics requests will be recorded in the clipboard. It's possible to draw widgets (using Fl_Copy_Surface::draw() ) or to use any of the \ref fl_drawings or the \ref fl_attributes. Finally, delete the Fl_Copy_Surface object to load the clipboard with the graphical data. <br> Fl_GL_Window 's can be copied to the clipboard as well. <br> Usage example: \code Fl_Widget *g = ...; // a widget you want to copy to the clipboard Fl_Copy_Surface *copy_surf = new Fl_Copy_Surface(g->w(), g->h()); // create an Fl_Copy_Surface object copy_surf->set_current(); // direct graphics requests to the clipboard fl_color(FL_WHITE); fl_rectf(0, 0, g->w(), g->h()); // draw a white background copy_surf->draw(g); // draw the g widget in the clipboard delete copy_surf; // after this, the clipboard is loaded Fl_Display_Device::display_device()->set_current(); // direct graphics requests back to the display \endcode Platform details: \li MSWindows: Transparent RGB images copy without transparency. The graphical data are copied to the clipboard as an 'enhanced metafile'. \li Mac OS: The graphical data are copied to the clipboard (a.k.a. pasteboard) in two 'flavors': 1) in vectorial form as PDF data; 2) in bitmap form as a TIFF image. Applications to which the clipboard content is pasted can use the flavor that suits them best. \li X11: the graphical data are copied to the clipboard as an image in BMP format. */ class FL_EXPORT Fl_Copy_Surface : public Fl_Surface_Device { private: int width; int height; Fl_Paged_Device *helper; #ifdef __APPLE__ CFMutableDataRef pdfdata; CGContextRef oldgc; CGContextRef gc; void prepare_copy_pdf_and_tiff(int w, int h); void complete_copy_pdf_and_tiff(); void init_PDF_context(int w, int h); static size_t MyPutBytes(void* info, const void* buffer, size_t count); #elif defined(WIN32) HDC oldgc; HDC gc; #else // Xlib Fl_Offscreen xid; Window oldwindow; Fl_Surface_Device *_ss; #endif public: static const char *class_id; const char *class_name() {return class_id;}; Fl_Copy_Surface(int w, int h); ~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 */ int h() { return height; } }; #if defined(__APPLE__) /* Mac class to reimplement Fl_Paged_Device::printable_rect() */ class FL_EXPORT Fl_Quartz_Surface_ : public Fl_System_Printer { protected: int width; int height; public: static const char *class_id; const char *class_name() {return class_id;}; Fl_Quartz_Surface_(int w, int h); virtual int printable_rect(int *w, int *h); virtual ~Fl_Quartz_Surface_() {}; }; #elif defined(WIN32) /* Win class to implement translate()/untranslate() */ class FL_EXPORT Fl_GDI_Surface_ : public Fl_Paged_Device { int width; int height; unsigned depth; POINT origins[10]; public: static const char *class_id; const char *class_name() {return class_id;}; Fl_GDI_Surface_(); virtual void translate(int x, int y); virtual void untranslate(); virtual ~Fl_GDI_Surface_(); }; #elif !defined(FL_DOXYGEN) /* Xlib class to implement translate()/untranslate() */ class FL_EXPORT Fl_Xlib_Surface_ : public Fl_Paged_Device { public: static const char *class_id; const char *class_name() {return class_id;}; Fl_Xlib_Surface_(); virtual void translate(int x, int y); virtual void untranslate(); virtual ~Fl_Xlib_Surface_(); }; #endif #endif // Fl_Copy_Surface_H // // End of "$Id$". //