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gfxPattern.h
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00001 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  * ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Oracle Corporation code.
00016  *
00017  * The Initial Developer of the Original Code is Oracle Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 2005
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Stuart Parmenter <pavlov@pavlov.net>
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00033  * the provisions above, a recipient may use your version of this file under
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00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef GFX_PATTERN_H
00039 #define GFX_PATTERN_H
00040 
00041 #include <cairo.h>
00042 
00043 #include "gfxColor.h"
00044 #include "gfxASurface.h"
00045 #include "gfxMatrix.h"
00046 #include "gfxTypes.h"
00047 
00048 class gfxPattern {
00049     THEBES_DECL_REFCOUNTING
00050 
00051 public:
00052     // from another surface
00053     gfxPattern(gfxASurface* surface) {
00054         mPattern = cairo_pattern_create_for_surface(surface->CairoSurface());
00055     }
00056 
00057     // linear
00058     gfxPattern(gfxFloat x0, gfxFloat y0, gfxFloat x1, gfxFloat y1) {
00059         mPattern = cairo_pattern_create_linear(x0, y0, x1, y1);
00060     }
00061 
00062     // radial
00063     gfxPattern(gfxFloat cx0, gfxFloat cy0, gfxFloat radius0,
00064                gfxFloat cx1, gfxFloat cy1, gfxFloat radius1) {
00065         mPattern = cairo_pattern_create_radial(cx0, cy0, radius0,
00066                                                cx1, cy1, radius1);
00067     }
00068 
00069     virtual ~gfxPattern() {
00070         cairo_pattern_destroy(mPattern);
00071     }
00072 
00073     cairo_pattern_t *CairoPattern() {
00074         return mPattern;
00075     }
00076 
00077     void AddColorStop(gfxFloat offset, const gfxRGBA& c) {
00078         cairo_pattern_add_color_stop_rgba(mPattern, offset, c.r, c.g, c.b, c.a);
00079     }
00080 
00081     void SetMatrix(const gfxMatrix& matrix) {
00082         cairo_matrix_t mat = matrix.ToCairoMatrix();
00083         cairo_pattern_set_matrix(mPattern, &mat);
00084     }
00085 
00086     gfxMatrix CurrentMatrix() const {
00087         cairo_matrix_t mat;
00088         cairo_pattern_get_matrix(mPattern, &mat);
00089         return gfxMatrix(mat);
00090     }
00091 
00092     // none, repeat, reflect
00093     void SetExtend(int extend) {
00094         cairo_pattern_set_extend(mPattern, (cairo_extend_t)extend);
00095     }
00096 
00097     int Extend() const {
00098         return (int)cairo_pattern_get_extend(mPattern);
00099     }
00100 
00101     void SetFilter(int filter) {
00102         cairo_pattern_set_filter(mPattern, (cairo_filter_t)filter);
00103     }
00104 
00105     int Filter() const {
00106         return (int)cairo_pattern_get_filter(mPattern);
00107     }
00108 
00109 protected:
00110     gfxPattern(cairo_pattern_t *pattern) : mPattern(pattern) {}
00111     cairo_pattern_t *mPattern;
00112 };
00113 
00114 #endif /* GFX_PATTERN_H */