Source Code Cross Referenced for GDITextRenderer.java in  » Apache-Harmony-Java-SE » org-package » org » apache » harmony » awt » gl » windows » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » org package » org.apache.harmony.awt.gl.windows 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:        /**
018:         * @author Ilya S. Okomin
019:         * @version $Revision$
020:         */package org.apache.harmony.awt.gl.windows;
021:
022:        import java.awt.Graphics2D;
023:        import java.awt.font.GlyphVector;
024:        import java.awt.geom.AffineTransform;
025:        import java.awt.geom.Point2D;
026:
027:        import org.apache.harmony.awt.gl.TextRenderer;
028:        import org.apache.harmony.awt.gl.font.CommonGlyphVector;
029:        import org.apache.harmony.awt.gl.font.CompositeFont;
030:        import org.apache.harmony.awt.gl.font.FontPeerImpl;
031:        import org.apache.harmony.awt.gl.font.Glyph;
032:        import org.apache.harmony.awt.gl.font.NativeFont;
033:        import org.apache.harmony.awt.gl.font.WindowsFont;
034:
035:        import org.apache.harmony.awt.nativebridge.windows.WindowsDefs;
036:        import org.apache.harmony.awt.nativebridge.windows.Win32;
037:
038:        /**
039:         *
040:         * TextRenderer that works by means of GDI calls.
041:         */
042:
043:        public class GDITextRenderer extends TextRenderer {
044:
045:            // GDI Pen object handle 
046:            long curPen;
047:
048:            // curPen's color 
049:            int curPenColor;
050:
051:            // GDI clipped region 
052:            long hOldGDIRgn = 0;
053:
054:            // Win32 instance
055:            private final Win32 win32 = Win32.getInstance();
056:
057:            /** GDITextRenderer singleton instance */
058:            public static final GDITextRenderer inst = new GDITextRenderer();
059:
060:            private GDITextRenderer() {
061:            }
062:
063:            // Convert from aarrggbb to 00bbggrr
064:            private int getGDIColor(int argbPix) {
065:                return ((argbPix & 0x00FF0000) >> 16) | (argbPix & 0x0000FF00)
066:                        | ((argbPix & 0x000000FF) << 16);
067:            }
068:
069:            @SuppressWarnings("deprecation")
070:            @Override
071:            public void drawGlyphVector(Graphics2D g, GlyphVector gv, float x,
072:                    float y) {
073:                FontPeerImpl fnt = (FontPeerImpl) gv.getFont().getPeer();
074:                if (fnt.getClass() == CompositeFont.class) {
075:                    drawCompositeGlyphVector(g, gv, x, y);
076:                } else {
077:                    drawNormalGlyphVector(g, gv, x, y);
078:                }
079:            }
080:
081:            /**
082:             * Method to draw GlyphVector created from physical font onto a 
083:             * specified graphics at desired coordinates.
084:             * 
085:             * @param g Graphics to draw onto
086:             * @param gv GlyphVector to draw
087:             * @param x starting X coordinate to draw at
088:             * @param y starting Y coordinate to draw at
089:             */
090:            @SuppressWarnings("deprecation")
091:            public void drawNormalGlyphVector(Graphics2D g, GlyphVector gv,
092:                    float x, float y) {
093:                AffineTransform trans = ((WinGDIGraphics2D) g).getTransform();
094:                long hdc = ((WinGDIGraphics2D) g).getDC();
095:
096:                x += trans.getTranslateX();
097:                y += trans.getTranslateY();
098:
099:                win32.SetTextColor(hdc, getGDIColor(g.getColor().getRGB()));
100:                win32.SetBkMode(hdc, WindowsDefs.TRANSPARENT);
101:
102:                WindowsFont wf = (WindowsFont) gv.getFont().getPeer();
103:
104:                int ascent = wf.getAscent();
105:                long font = wf.getFontHandle();
106:                long oldFont = win32.SelectObject(hdc, font);
107:
108:                for (int i = 0; i < gv.getNumGlyphs(); i++) {
109:                    Glyph gl = ((CommonGlyphVector) gv).vector[i];
110:                    char chr = gl.getChar();
111:
112:                    if (gl.getPointWidth() == 0) {
113:                        continue;
114:                    }
115:
116:                    String sChar = String.valueOf(chr);
117:
118:                    Point2D pos = gv.getGlyphPosition(i);
119:                    win32
120:                            .TextOutW(hdc, (int) Math.round(x + pos.getX()),
121:                                    (int) Math.round(y + pos.getY() - ascent),
122:                                    sChar, 1);
123:                }
124:
125:                win32.SelectObject(hdc, oldFont);
126:            }
127:
128:            /**
129:             * Method to draw GlyphVector created from composite font onto a 
130:             * specified graphics at desired coordinates.
131:             * 
132:             * @param g Graphics to draw onto
133:             * @param gv GlyphVector to draw
134:             * @param x starting X coordinate to draw at
135:             * @param y starting Y coordinate to draw at
136:             */
137:            @SuppressWarnings("deprecation")
138:            public void drawCompositeGlyphVector(Graphics2D g, GlyphVector gv,
139:                    float x, float y) {
140:                AffineTransform trans = ((WinGDIGraphics2D) g).getTransform();
141:                long hdc = ((WinGDIGraphics2D) g).getDC();
142:
143:                x += (int) Math.round(trans.getTranslateX());
144:                y += (int) Math.round(trans.getTranslateY());
145:
146:                win32.SetTextColor(hdc, getGDIColor(g.getColor().getRGB()));
147:                win32.SetBkMode(hdc, WindowsDefs.TRANSPARENT);
148:
149:                CompositeFont cf = (CompositeFont) gv.getFont().getPeer();
150:
151:                int ascent = cf.getAscent();
152:
153:                long font = 0;
154:
155:                for (int i = 0; i < gv.getNumGlyphs(); i++) {
156:                    Glyph gl = ((CommonGlyphVector) gv).vector[i];
157:                    char chr = gl.getChar();
158:
159:                    if (gl.getPointWidth() == 0) {
160:                        continue;
161:                    }
162:
163:                    String sChar = String.valueOf(chr);
164:
165:                    long glPFont = gl.getPFont();
166:                    if (font != glPFont) {
167:                        font = glPFont;
168:                        win32.SelectObject(hdc, font);
169:                    }
170:
171:                    Point2D pos = gv.getGlyphPosition(i);
172:                    win32
173:                            .TextOutW(hdc, (int) Math.round(x + pos.getX()),
174:                                    (int) Math.round(y + pos.getY() - ascent),
175:                                    sChar, 1);
176:                }
177:            }
178:
179:            @SuppressWarnings("deprecation")
180:            @Override
181:            public void drawString(Graphics2D g, String str, float x, float y) {
182:                FontPeerImpl fnt = (FontPeerImpl) g.getFont().getPeer();
183:                if (fnt.getClass() == CompositeFont.class) {
184:                    drawCompositeString(g, str, Math.round(x), Math.round(y));
185:                } else {
186:                    drawNormalString(g, str, Math.round(x), Math.round(y));
187:                }
188:            }
189:
190:            /**
191:             * Method to draw string with graphics that has physical font
192:             *  at desired coordinates.
193:             * 
194:             * @param g Graphics to draw onto
195:             * @param str String to draw
196:             * @param x starting X coordinate to draw at
197:             * @param y starting Y coordinate to draw at
198:             */
199:            @SuppressWarnings("deprecation")
200:            public void drawNormalString(Graphics2D g, String str, int x, int y) {
201:                AffineTransform trans = ((WinGDIGraphics2D) g).getTransform();
202:
203:                x += (int) Math.round(trans.getTranslateX());
204:                y += (int) Math.round(trans.getTranslateY());
205:
206:                WindowsFont wf = (WindowsFont) (g.getFont().getPeer());
207:                long font = wf.getFontHandle();
208:
209:                long gi = ((WinGDIGraphics2D) g).getGraphicsInfo();
210:                long hdc = ((WinGDIGraphics2D) g).getDC();
211:
212:                win32.SelectObject(hdc, font);
213:
214:                win32.SetTextColor(hdc, getGDIColor(g.getColor().getRGB()));
215:                win32.SetBkMode(hdc, WindowsDefs.TRANSPARENT);
216:
217:                /*
218:                 * Work around for escape-subsequences. If e.g. we draw
219:                 * string "\n\uFFFF" - instead of default glyph for \uFFFF
220:                 * GDI draws small vertical rectangle. For this reason we draw
221:                 * chars one by one to avoid this situation.
222:                 *
223:                 * GDI draws all glyphs starting from 0. First 32 glyphs are taken from
224:                 * another font, hence we have to check if the glyph exists in chosen 
225:                 * font and if success draw it, otherwise we draw default glyph, 
226:                 * except esc-subsequence chars.
227:                 * */
228:                char[] chars = new char[str.length()];
229:                int j = 0;
230:                for (int i = 0; i < str.length(); i++) {
231:                    char c = str.charAt(i);
232:                    Glyph gl = wf.getGlyph(c);
233:
234:                    // We compare Advances because Width
235:                    // of a char can be 0 (e.g. "Space" char)
236:                    if (gl.getGlyphMetrics().getAdvance() != 0) {
237:                        chars[j] = gl.getChar();
238:                        j++;
239:                    }
240:                }
241:                String out = new String(chars, 0, j);
242:
243:                win32.TextOutW(hdc, x, y - wf.getAscent(), out, j);
244:
245:            }
246:
247:            /**
248:             * Method to draw string with graphics that has composite font
249:             *  at desired coordinates.
250:             * 
251:             * @param g Graphics to draw onto
252:             * @param str String to draw
253:             * @param x starting X coordinate to draw at
254:             * @param y starting Y coordinate to draw at
255:             */
256:            @SuppressWarnings("deprecation")
257:            public void drawCompositeString(Graphics2D g, String str, int x,
258:                    int y) {
259:
260:                int len = str.length();
261:
262:                if (len == 0) {
263:                    return;
264:                }
265:
266:                AffineTransform trans = ((WinGDIGraphics2D) g).getTransform();
267:
268:                long gi = ((WinGDIGraphics2D) g).getGraphicsInfo();
269:                long hdc = ((WinGDIGraphics2D) g).getDC();
270:
271:                x += (int) Math.round(trans.getTranslateX());
272:                y += (int) Math.round(trans.getTranslateY());
273:
274:                win32.SetTextColor(hdc, getGDIColor(g.getColor().getRGB()));
275:                win32.SetBkMode(hdc, WindowsDefs.TRANSPARENT);
276:
277:                CompositeFont wcf = (CompositeFont) (g.getFont().getPeer());
278:                int charFontIndex = wcf.getCharFontIndex(str.charAt(0), 0);
279:                int fontIndex = charFontIndex;
280:
281:                WindowsFont physFont = (WindowsFont) wcf.fPhysicalFonts[charFontIndex];
282:                long font = physFont.getFontHandle();
283:
284:                win32.SelectObject(hdc, font);
285:
286:                int ascent = physFont.getAscent(); // Font ascent
287:                int offs = 0; // width of substring with the same font header
288:                int yOffset = y - ascent; // Y offset to draw (y - font.ascent)
289:                int xOffset = x; // X offset to draw
290:                int start = 0;
291:                int count = 0;
292:
293:                for (int i = 0; i < len; i++) {
294:                    char c = str.charAt(i);
295:                    Glyph gl = wcf.getGlyph(c);
296:
297:                    int glWidth = Math.round(gl.getGlyphPointMetrics()
298:                            .getAdvance());
299:                    if (glWidth == 0) {
300:                        continue;
301:                    }
302:
303:                    fontIndex = wcf.getCharFontIndex(c, 0);
304:
305:                    if (fontIndex != charFontIndex) {
306:                        charFontIndex = fontIndex;
307:                        win32.TextOutW(hdc, xOffset, yOffset, str.substring(
308:                                start, start + count), count);
309:
310:                        xOffset += offs;
311:                        offs = 0;
312:                        count = 1;
313:                        start = i;
314:
315:                        physFont = (WindowsFont) wcf.fPhysicalFonts[charFontIndex];
316:                        font = physFont.getFontHandle();
317:                        win32.SelectObject(hdc, font);
318:                        yOffset = y - physFont.getAscent();
319:                    } else {
320:                        count++;
321:                    }
322:
323:                    offs += glWidth;
324:                }
325:
326:                win32.TextOutW(hdc, xOffset, yOffset, str.substring(start,
327:                        start + count), count);
328:            }
329:
330:        }
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