// Transparent.hh for FbTk - Fluxbox Toolkit // Copyright (c) 2003 Henrik Kinnunen (fluxgen at fluxbox dot org) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. // $Id$ #ifndef FBTK_TRANSPARENT_HH #define FBTK_TRANSPARENT_HH #include <X11/Xlib.h> namespace FbTk { /// renders to drawable together with an alpha mask class Transparent { public: Transparent(Drawable source, Drawable dest, unsigned char alpha, int screen_num); ~Transparent(); /// sets alpha value void setAlpha(unsigned char alpha); /// sets source drawable void setSource(Drawable src, int screen_num); /// sets destination drawable void setDest(Drawable dest, int screen_num); void freeDest(); /** renders to dest from src with specified coordinates and size */ void render(int src_x, int src_y, int dest_x, int dest_y, unsigned int width, unsigned int height) const; unsigned char alpha() const { return m_alpha; } Drawable dest() const { return m_dest; } Drawable source() const { return m_source; } static bool haveComposite(bool for_real = false); static bool haveRender() { if (!s_init) init(); return s_render; } static void usePseudoTransparent(bool force); private: void freeAlpha(); void allocAlpha(unsigned char newval); unsigned long m_alpha_pic; unsigned long m_src_pic; unsigned long m_dest_pic; Drawable m_source, m_dest; unsigned char m_alpha; static bool s_init; static bool s_render; ///< wheter we have RENDER support static bool s_composite; ///< wheter we have Composite support static bool s_use_composite; ///< whether or not to use Composite static void init(); }; }; // end namespace FbTk #endif // FBTK_TRANSPARENT_HH