diff options
Diffstat (limited to 'cairo')
| -rw-r--r-- | cairo/Fl_Cairo.cxx | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/cairo/Fl_Cairo.cxx b/cairo/Fl_Cairo.cxx index 1cdad67cb..ee767c9fd 100644 --- a/cairo/Fl_Cairo.cxx +++ b/cairo/Fl_Cairo.cxx @@ -3,7 +3,7 @@ // // Main header file for the Fast Light Tool Kit (FLTK). // -// Copyright 1998-2010 by Bill Spitzak and others. +// Copyright 1998-2016 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 @@ -26,8 +26,23 @@ #include <Carbon/Carbon.h> #endif +// Cairo is currently supported for the following platforms: +// Win32, Apple Quartz, X11 + +#if defined(USE_X11) // X11 +# include <cairo-xlib.h> +#elif defined(WIN32) +# include <cairo-win32.h> +#elif defined(__APPLE_QUARTZ__) // PORTME: Cairo Support +# include <cairo-quartz.h> +#elif defined(FL_PORTING) +# pragma message "FL_PORTING: is the Cairo library available on this platform?" +#else +# error Cairo is not supported on this platform. +#endif + // static Fl module initialization : -Fl_Cairo_State Fl::cairo_state_; ///< contains all necesary info for current cairo context mapping +Fl_Cairo_State Fl::cairo_state_; ///< contains all necessary info for current cairo context mapping // Fl cairo features implementation @@ -39,22 +54,22 @@ void Fl_Cairo_State::autolink(bool b) { autolink_ = b; #else Fl::fatal("In Fl::autolink(bool) : Cairo autolink() feature is only " - "available with the enable-cairoext configure option, now quitting."); + "available with the enable-cairoext configure option, now quitting."); #endif } /** Provides a corresponding cairo context for window \a wi. - This is needed in a draw() override if Fl::cairo_autolink_context() + 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 + 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 + 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 + Also, after this call, Fl::cairo_cc() 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. @@ -83,7 +98,8 @@ cairo_t * Fl::cairo_make_current(Fl_Window* wi) { /* Creates transparently a cairo_surface_t object. - gc is an HDC context in WIN32, a CGContext* in Quartz, a display on X11 + gc is an HDC context in WIN32, a CGContext* in Quartz, and + a display on X11 (not used on this platform) */ static cairo_surface_t * cairo_create_surface(void * gc, int W, int H) { @@ -99,8 +115,9 @@ static cairo_surface_t * cairo_create_surface(void * gc, int W, int H) { } /** - 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 + Creates a cairo context from a \a gc only, gets 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; @@ -127,7 +144,7 @@ cairo_t * Fl::cairo_make_current(void *gc) { #elif defined(WIN32) // we don't need any W,H for WIN32 #else -# error Cairo is not supported under this platform. +# error Cairo is not supported on this platform. #endif if (!gc) { Fl::cairo_cc(0); |