//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // AGG 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- #ifndef AGG_RENDERER_MCLIP_INCLUDED #define AGG_RENDERER_MCLIP_INCLUDED #include "agg_basics.h" #include "agg_array.h" #include "agg_renderer_base.h" namespace agg { //----------------------------------------------------------renderer_mclip template<class PixelFormat> class renderer_mclip { public: typedef PixelFormat pixfmt_type; typedef typename pixfmt_type::color_type color_type; typedef typename pixfmt_type::row_data row_data; typedef renderer_base<pixfmt_type> base_ren_type; //-------------------------------------------------------------------- explicit renderer_mclip(pixfmt_type& pixf) : m_ren(pixf), m_curr_cb(0), m_bounds(m_ren.xmin(), m_ren.ymin(), m_ren.xmax(), m_ren.ymax()) {} void attach(pixfmt_type& pixf) { m_ren.attach(pixf); reset_clipping(true); } //-------------------------------------------------------------------- const pixfmt_type& ren() const { return m_ren.ren(); } pixfmt_type& ren() { return m_ren.ren(); } //-------------------------------------------------------------------- unsigned width() const { return m_ren.width(); } unsigned height() const { return m_ren.height(); } //-------------------------------------------------------------------- const rect_i& clip_box() const { return m_ren.clip_box(); } int xmin() const { return m_ren.xmin(); } int ymin() const { return m_ren.ymin(); } int xmax() const { return m_ren.xmax(); } int ymax() const { return m_ren.ymax(); } //-------------------------------------------------------------------- const rect_i& bounding_clip_box() const { return m_bounds; } int bounding_xmin() const { return m_bounds.x1; } int bounding_ymin() const { return m_bounds.y1; } int bounding_xmax() const { return m_bounds.x2; } int bounding_ymax() const { return m_bounds.y2; } //-------------------------------------------------------------------- void first_clip_box() { m_curr_cb = 0; if(m_clip.size()) { const rect_i& cb = m_clip[0]; m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2); } } //-------------------------------------------------------------------- bool next_clip_box() { if(++m_curr_cb < m_clip.size()) { const rect_i& cb = m_clip[m_curr_cb]; m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2); return true; } return false; } //-------------------------------------------------------------------- void reset_clipping(bool visibility) { m_ren.reset_clipping(visibility); m_clip.remove_all(); m_curr_cb = 0; m_bounds = m_ren.clip_box(); } //-------------------------------------------------------------------- void add_clip_box(int x1, int y1, int x2, int y2) { rect_i cb(x1, y1, x2, y2); cb.normalize(); if(cb.clip(rect_i(0, 0, width() - 1, height() - 1))) { m_clip.add(cb); if(cb.x1 < m_bounds.x1) m_bounds.x1 = cb.x1; if(cb.y1 < m_bounds.y1) m_bounds.y1 = cb.y1; if(cb.x2 > m_bounds.x2) m_bounds.x2 = cb.x2; if(cb.y2 > m_bounds.y2) m_bounds.y2 = cb.y2; } } //-------------------------------------------------------------------- void clear(const color_type& c) { m_ren.clear(c); } //-------------------------------------------------------------------- void copy_pixel(int x, int y, const color_type& c) { first_clip_box(); do { if(m_ren.inbox(x, y)) { m_ren.ren().copy_pixel(x, y, c); break; } } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_pixel(int x, int y, const color_type& c, cover_type cover) { first_clip_box(); do { if(m_ren.inbox(x, y)) { m_ren.ren().blend_pixel(x, y, c, cover); break; } } while(next_clip_box()); } //-------------------------------------------------------------------- color_type pixel(int x, int y) const { if(m_ren.inbox(x, y)) { return m_ren.ren().pixel(x, y); } return color_type::no_color(); } //-------------------------------------------------------------------- void copy_hline(int x1, int y, int x2, const color_type& c) { first_clip_box(); do { m_ren.copy_hline(x1, y, x2, c); } while(next_clip_box()); } //-------------------------------------------------------------------- void copy_vline(int x, int y1, int y2, const color_type& c) { first_clip_box(); do { m_ren.copy_vline(x, y1, y2, c); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_hline(int x1, int y, int x2, const color_type& c, cover_type cover) { first_clip_box(); do { m_ren.blend_hline(x1, y, x2, c, cover); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_vline(int x, int y1, int y2, const color_type& c, cover_type cover) { first_clip_box(); do { m_ren.blend_vline(x, y1, y2, c, cover); } while(next_clip_box()); } //-------------------------------------------------------------------- void copy_bar(int x1, int y1, int x2, int y2, const color_type& c) { first_clip_box(); do { m_ren.copy_bar(x1, y1, x2, y2, c); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_bar(int x1, int y1, int x2, int y2, const color_type& c, cover_type cover) { first_clip_box(); do { m_ren.blend_bar(x1, y1, x2, y2, c, cover); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_solid_hspan(int x, int y, int len, const color_type& c, const cover_type* covers) { first_clip_box(); do { m_ren.blend_solid_hspan(x, y, len, c, covers); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_solid_vspan(int x, int y, int len, const color_type& c, const cover_type* covers) { first_clip_box(); do { m_ren.blend_solid_vspan(x, y, len, c, covers); } while(next_clip_box()); } //-------------------------------------------------------------------- void copy_color_hspan(int x, int y, int len, const color_type* colors) { first_clip_box(); do { m_ren.copy_color_hspan(x, y, len, colors); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_color_hspan(int x, int y, int len, const color_type* colors, const cover_type* covers, cover_type cover = cover_full) { first_clip_box(); do { m_ren.blend_color_hspan(x, y, len, colors, covers, cover); } while(next_clip_box()); } //-------------------------------------------------------------------- void blend_color_vspan(int x, int y, int len, const color_type* colors, const cover_type* covers, cover_type cover = cover_full) { first_clip_box(); do { m_ren.blend_color_vspan(x, y, len, colors, covers, cover); } while(next_clip_box()); } //-------------------------------------------------------------------- void copy_from(const rendering_buffer& from, const rect_i* rc=0, int x_to=0, int y_to=0) { first_clip_box(); do { m_ren.copy_from(from, rc, x_to, y_to); } while(next_clip_box()); } //-------------------------------------------------------------------- template<class SrcPixelFormatRenderer> void blend_from(const SrcPixelFormatRenderer& src, const rect_i* rect_src_ptr = 0, int dx = 0, int dy = 0, cover_type cover = cover_full) { first_clip_box(); do { m_ren.blend_from(src, rect_src_ptr, dx, dy, cover); } while(next_clip_box()); } private: renderer_mclip(const renderer_mclip<PixelFormat>&); const renderer_mclip<PixelFormat>& operator = (const renderer_mclip<PixelFormat>&); base_ren_type m_ren; pod_bvector<rect_i, 4> m_clip; unsigned m_curr_cb; rect_i m_bounds; }; } #endif |