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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>wg_renderedstring.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> </center><hr><h1>wg_renderedstring.cpp</h1><div class="fragment"><pre>00001 <span class="comment">// wg_renderedstring.cpp</span>00002 <span class="comment">//</span>00003 <span class="comment">// CRenderedString implementation</span>00004 <span class="comment">//</span>00005 <span class="comment">//</span>00006 <span class="comment">// Copyright (c) 2002 Rob Wiskow</span>00007 <span class="comment">// rob-dev@boxedchaos.com</span>00008 <span class="comment">//</span>00009 <span class="comment">// This library is free software; you can redistribute it and/or</span>00010 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>00011 <span class="comment">// License as published by the Free Software Foundation; either</span>00012 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>00013 <span class="comment">//</span>00014 <span class="comment">// This library is distributed in the hope that it will be useful,</span>00015 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>00016 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>00017 <span class="comment">// Lesser General Public License for more details.</span>00018 <span class="comment">//</span>00019 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>00020 <span class="comment">// License along with this library; if not, write to the Free Software</span>00021 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>00022 <span class="comment">//</span>00023 00024 00025 <span class="preprocessor">#include "wgui_include_config.h"</span>00026 <span class="preprocessor">#include "wg_renderedstring.h"</span>00027 <span class="preprocessor">#include "wg_painter.h"</span>00028 <span class="preprocessor">#include "wg_error.h"</span>00029 <span class="preprocessor">#include <algorithm></span>00030 00031 <span class="keyword">namespace </span>wGui00032 {00033 <a name="l00034"></a><a class="code" href="classwGui_1_1CRenderedString.html#a0">00034</a> CRenderedString::CRenderedString(<a class="code" href="classwGui_1_1CFontEngine.html">CFontEngine</a>* pFontEngine, <span class="keyword">const</span> std::string& sString, EVAlign eVertAlign, EHAlign eHorzAlign) :00035 m_pFontEngine(pFontEngine),00036 m_sString(sString),00037 m_eVertAlign(eVertAlign),00038 m_eHorzAlign(eHorzAlign),00039 m_bCachedMetricsValid(false),00040 m_MaskChar(' '),00041 m_MaxFontHeight(-1)00042 {00043 <span class="keywordflow">if</span> (! <a class="code" href="classwGui_1_1CRenderedString.html#n0">m_pFontEngine</a>)00044 {00045 <span class="keywordflow">throw</span>(<a class="code" href="classwGui_1_1Wg__Ex__App.html">Wg_Ex_App</a>(<span class="stringliteral">"CRenderedString::CRenderedString : Bad pFontEngine pointer!"</span>));00046 }00047 }00048 00049 <a name="l00050"></a><a class="code" href="classwGui_1_1CRenderedString.html#a1">00050</a> <span class="keywordtype">void</span> CRenderedString::Draw(SDL_Surface* pSurface, <span class="keyword">const</span> <a class="code" href="classwGui_1_1CRect.html">CRect</a>& BoundingRect, <span class="keyword">const</span> <a class="code" href="classwGui_1_1CPoint.html">CPoint</a>& OriginPoint, <span class="keyword">const</span> <a class="code" href="classwGui_1_1CRGBColor.html">CRGBColor</a>& FontColor)<span class="keyword"> const</span>00051 <span class="keyword"></span>{00052 <a class="code" href="classwGui_1_1CPoint.html">CPoint</a> OriginOffset;00053 std::vector<CRect> CharacterRects;00054 <a class="code" href="classwGui_1_1CRenderedString.html#a2">GetMetrics</a>(0, &OriginOffset, &CharacterRects);00055 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < <a class="code" href="classwGui_1_1CRenderedString.html#n1">m_sString</a>.size(); ++i)00056 {00057 FT_BitmapGlyphRec* pGlyph;00058 <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CRenderedString.html#n2">m_MaskChar</a> == <span class="charliteral">' '</span>)00059 {00060 pGlyph = <a class="code" href="classwGui_1_1CRenderedString.html#n0">m_pFontEngine</a>-><a class="code" href="classwGui_1_1CFontEngine.html#a2">RenderGlyph</a>(<a class="code" href="classwGui_1_1CRenderedString.html#n1">m_sString</a>[i]);00061 }00062 <span class="keywordflow">else</span>00063 {00064 pGlyph = <a class="code" href="classwGui_1_1CRenderedString.html#n0">m_pFontEngine</a>-><a class="code" href="classwGui_1_1CFontEngine.html#a2">RenderGlyph</a>(<a class="code" href="classwGui_1_1CRenderedString.html#n2">m_MaskChar</a>);00065 }00066 <a class="code" href="classwGui_1_1CPainter.html">CPainter</a> Painter(pSurface, CPainter::PAINT_NORMAL);00067 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = 0; y < pGlyph->bitmap.rows; ++y)00068 {00069 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x < pGlyph->bitmap.width; ++x)00070 {00071 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* PixelOffset = pGlyph->bitmap.buffer + y * pGlyph->bitmap.width + x;00072 <span class="keywordflow">if</span> (*PixelOffset != 0x00)00073 {00074 <a class="code" href="classwGui_1_1CRGBColor.html">CRGBColor</a> PixelColor(FontColor.<a class="code" href="classwGui_1_1CRGBColor.html#m0">red</a>, FontColor.<a class="code" href="classwGui_1_1CRGBColor.html#m1">green</a>, FontColor.<a class="code" href="classwGui_1_1CRGBColor.html#m2">blue</a>, *PixelOffset);00075 <a class="code" href="classwGui_1_1CPoint.html">CPoint</a> PixelPoint(<a class="code" href="classwGui_1_1CPoint.html">CPoint</a>(x + pGlyph->left, y) + OriginPoint + OriginOffset + CharacterRects[i].TopLeft());00076 <span class="keywordflow">if</span> (BoundingRect.<a class="code" href="classwGui_1_1CRect.html#a32">HitTest</a>(PixelPoint) == CRect::RELPOS_INSIDE)00077 {00078 Painter.<a class="code" href="classwGui_1_1CPainter.html#a7">DrawPoint</a>(PixelPoint, PixelColor);00079 }00080 }00081 }00082 }00083 }00084 }00085 <a name="l00086"></a><a class="code" href="classwGui_1_1CRenderedString.html#a4">00086</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> CRenderedString::GetMaxFontHeight()00087 {00088 <span class="keywordflow">if</span> (m_MaxFontHeight < 0)00089 {00090 <span class="keywordtype">int</span> maxHeight=0;00091 FT_Glyph_Metrics* pMetrics;00092 <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i < 256; i++)00093 {00094 pMetrics = <a class="code" href="classwGui_1_1CRenderedString.html#n0">m_pFontEngine</a>-><a class="code" href="classwGui_1_1CFontEngine.html#a3">GetMetrics</a>((<span class="keywordtype">char</span>)i);00095 <span class="keywordflow">if</span> ((pMetrics->height >> 6) > maxHeight)00096 {00097 maxHeight = (pMetrics->height >> 6);00098 }00099 <span class="comment">//maxHeight = std::max(maxHeight, pMetrics->height);</span>00100 }00101 m_MaxFontHeight = maxHeight;00102 }00103 <span class="keywordflow">return</span> m_MaxFontHeight;00104 }⌨️ 快捷键说明
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