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Diffstat (limited to 'src/Fl_Cairo.cxx')
| -rw-r--r-- | src/Fl_Cairo.cxx | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/src/Fl_Cairo.cxx b/src/Fl_Cairo.cxx deleted file mode 100644 index eb79c37de..000000000 --- a/src/Fl_Cairo.cxx +++ /dev/null @@ -1,149 +0,0 @@ -// -// "$Id$" -// -// Main header file for the Fast Light Tool Kit (FLTK). -// -// Copyright 1998-2008 by Bill Spitzak and others. -// -// This library is free software; you can redistribute it and/or -// modify it under the terms of the GNU Library General Public -// License as published by the Free Software Foundation; either -// version 2 of the License, or (at your option) any later version. -// -// This library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -// Library General Public License for more details. -// -// You should have received a copy of the GNU Library General Public -// License along with this library; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 -// USA. -// -// Please report all bugs and problems on the following page: -// -// http://www.fltk.org/str.php -// - -#include <config.h> - -#ifdef HAVE_CAIRO -#include <FL/Fl.H> -#include <FL/x.H> -#include <FL/Fl_Window.H> - -// static Fl module initialization : -Fl_Cairo_State Fl::cairo_state_; ///< contains all necesary info for current cairo context mapping -// Fl cairo features implementation - -/** - Provides a corresponding cairo context for window \a wi. - This is needed in a draw() override if Fl::cairo_autolink_context() - returns false, which is the default. - The cairo_context() does not need to be freed as it is freed every time - a new cairo context is created. When the program terminates, - a call to Fl::cairo_make_current(0) will destroy any residual context. - \note A new cairo context is not always re-created when this method - is used. In particular, if the current graphical context and the current - window didn't change between two calls, the previous gc is internally kept, - thus optimizing the drawing performances. - Also, after this call, Fl::cairo_gc() is adequately updated with this - cairo context. - \note Only available when configure has the --enable-cairo option - \return the valid cairo_t* cairo context associated to this window. -*/ -cairo_t * Fl::cairo_make_current(Fl_Window* wi) { - if (!wi) return NULL; // Precondition - - if (fl_gc==0) { // means remove current cc - Fl::cairo_cc(0); // destroy any previous cc - cairo_state_.window(0); - return 0; - } - - // don't re-create a context if it's the same gc/window couple - if (fl_gc==Fl::cairo_state_.gc() && fl_xid(wi) == (Window) Fl::cairo_state_.window()) - return Fl::cairo_cc(); - - cairo_state_.window(wi); - -#if defined(USE_X11) - return Fl::cairo_make_current(0, wi->w(), wi->h()); -#else - return Fl::cairo_make_current(fl_gc, wi->w(), wi->h()); -#endif -} - -/* - Creates transparently a cairo_surface_t object. - gc is an HDC context in WIN32, a CGContext* in Quartz, a display on X11 - */ -static cairo_surface_t * cairo_create_surface(void * gc, int W, int H) { -# if defined(USE_X11) - return cairo_xlib_surface_create(fl_display, fl_window, fl_visual->visual, W, H); -# elif defined(WIN32) - return cairo_win32_surface_create((HDC) gc); -# elif defined(__APPLE_QUARTZ__) - return cairo_quartz_surface_create_for_cg_context((CGContext*) gc, W, H); -# else -# error Cairo is not supported under this platform. -# endif -} - -/** - Creates a cairo context from a \a gc only, get its window size or offscreen size if fl_window is null. - \note Only available when configure has the --enable-cairo option -*/ -cairo_t * Fl::cairo_make_current(void *gc) { - int W=0,H=0; -#if defined(USE_X11) - //FIXME X11 get W,H - // gc will be the window handle here -# warning FIXME get W,H for cairo_make_current(void*) -#elif defined(__APPLE_QUARTZ__) - if (fl_window) { - Rect portRect; - GetPortBounds(GetWindowPort( fl_window ), &portRect); - W = portRect.right-portRect.left; - H = portRect.bottom-portRect.top; - } - else { - W = CGBitmapContextGetHeight(fl_gc); - H = CGBitmapContextGetHeight(fl_gc); - } -#elif defined(WIN32) - // we don't need any W,H for WIN32 -#else -# error Cairo is not supported under this platform. -#endif - if (!gc) { - Fl::cairo_cc(0); - cairo_state_.gc(0); // keep track for next time - return 0; - } - if (gc==Fl::cairo_state_.gc() && fl_window== (Window) Fl::cairo_state_.window()) - return Fl::cairo_cc(); - cairo_state_.gc(fl_gc); // keep track for next time - cairo_surface_t * s = cairo_create_surface(gc, W, H); - cairo_t * c = cairo_create(s); - cairo_surface_destroy(s); - Fl::cairo_cc(c); - return c; -} - -/** - Creates a cairo context from a \a gc and its size - \note Only available when configure has the --enable-cairo option -*/ -cairo_t * Fl::cairo_make_current(void *gc, int W, int H) { - cairo_surface_t * s = cairo_create_surface(gc, W, H); - cairo_t * c = cairo_create(s); - cairo_surface_destroy(s); - Fl::cairo_cc(c); - return c; -} -#endif // HAVE_CAIRO - -// -// End of "$Id$" . -// |
