diff options
Diffstat (limited to 'src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx')
| -rw-r--r-- | src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx index dc8e84d00..b9ac31eff 100644 --- a/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx +++ b/src/drivers/Xlib/Fl_Xlib_Graphics_Driver.cxx @@ -3,7 +3,7 @@ // // Rectangle drawing routines for the Fast Light Tool Kit (FLTK). // -// Copyright 1998-2012 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 @@ -29,6 +29,17 @@ const char *Fl_Xlib_Graphics_Driver::class_id = "Fl_Xlib_Graphics_Driver"; +/* Reference to the current graphics context + For back-compatibility only. The preferred procedure to get this pointer is + Fl_Surface_Device::surface()->driver()->get_gc(). + */ +GC fl_gc = 0; + +void Fl_Graphics_Driver::global_gc() +{ + fl_gc = (GC)get_gc(); +} + /* * By linking this module, the following static method will instatiate the @@ -39,13 +50,23 @@ Fl_Graphics_Driver *Fl_Graphics_Driver::newMainGraphicsDriver() return new Fl_Xlib_Graphics_Driver(); } +GC Fl_Xlib_Graphics_Driver::gc = NULL; + +Fl_Xlib_Graphics_Driver::Fl_Xlib_Graphics_Driver(void) { + if (!gc) { + fl_open_display(); + // the unique GC used by all X windows + gc = XCreateGC(fl_display, RootWindow(fl_display, fl_screen), 0, 0); + } +} + char Fl_Xlib_Graphics_Driver::can_do_alpha_blending() { return Fl_X::xrender_supported(); } void Fl_Xlib_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy) { - XCopyArea(fl_display, pixmap, fl_window, fl_gc, srcx, srcy, w, h, x, y); + XCopyArea(fl_display, pixmap, fl_window, gc, srcx, srcy, w, h, x, y); } void Fl_Xlib_Graphics_Driver::copy_offscreen_with_alpha(int x, int y, int w, int h, |