| File: | jdk/src/java.desktop/unix/native/common/java2d/x11/X11TextRenderer_md.c |
| Warning: | line 239, column 5 Value stored to 'scan' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* |
| 2 | * Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Oracle designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Oracle in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 22 | * or visit www.oracle.com if you need additional information or have any |
| 23 | * questions. |
| 24 | */ |
| 25 | |
| 26 | #include "GlyphImageRef.h" |
| 27 | |
| 28 | #ifdef HEADLESS |
| 29 | #include "SurfaceData.h" |
| 30 | #else |
| 31 | #include "X11SurfaceData.h" |
| 32 | #include "GraphicsPrimitiveMgr.h" |
| 33 | #endif /* !HEADLESS */ |
| 34 | #include <jlong.h> |
| 35 | |
| 36 | #define TEXT_BM_WIDTH1024 1024 |
| 37 | #define TEXT_BM_HEIGHT32 32 |
| 38 | |
| 39 | #ifndef HEADLESS |
| 40 | |
| 41 | static jboolean checkPixmap(JNIEnv *env, AwtGraphicsConfigDataPtr cData) |
| 42 | { |
| 43 | XImage *img; |
| 44 | int image_size; |
| 45 | Window root; |
| 46 | |
| 47 | if (cData->monoImage == NULL((void*)0)) { |
| 48 | img = XCreateImage(awt_display, NULL((void*)0), 1, XYBitmap0, 0, 0, |
| 49 | TEXT_BM_WIDTH1024, TEXT_BM_HEIGHT32, 32, 0); |
| 50 | if (img != NULL((void*)0)) { |
| 51 | image_size = img->bytes_per_line * TEXT_BM_HEIGHT32; |
| 52 | // assert(BM_W and BM_H are not large enough to overflow); |
| 53 | img->data = (char *) malloc(image_size); |
| 54 | if (img->data == NULL((void*)0)) { |
| 55 | XFree(img); |
| 56 | } else { |
| 57 | // Force same bit/byte ordering |
| 58 | img->bitmap_bit_order = img->byte_order; |
| 59 | cData->monoImage = img; |
| 60 | } |
| 61 | } |
| 62 | if (cData->monoImage == NULL((void*)0)) { |
| 63 | JNU_ThrowOutOfMemoryError(env, "Cannot allocate bitmap for text"); |
| 64 | return JNI_FALSE0; |
| 65 | } |
| 66 | } |
| 67 | if (cData->monoPixmap == 0 || |
| 68 | cData->monoPixmapGC == NULL((void*)0) || |
| 69 | cData->monoPixmapWidth != TEXT_BM_WIDTH1024 || |
| 70 | cData->monoPixmapHeight != TEXT_BM_HEIGHT32) |
| 71 | { |
| 72 | if (cData->monoPixmap != 0) { |
| 73 | XFreePixmap(awt_display, cData->monoPixmap); |
| 74 | cData->monoPixmap = 0; |
| 75 | } |
| 76 | if (cData->monoPixmapGC != NULL((void*)0)) { |
| 77 | XFreeGC(awt_display, cData->monoPixmapGC); |
| 78 | cData->monoPixmapGC = 0; |
| 79 | } |
| 80 | root = RootWindow(awt_display, cData->awt_visInfo.screen)((&((_XPrivDisplay)(awt_display))->screens[cData->awt_visInfo .screen])->root); |
| 81 | cData->monoPixmap = XCreatePixmap(awt_display, root, |
| 82 | TEXT_BM_WIDTH1024, TEXT_BM_HEIGHT32, 1); |
| 83 | if (cData->monoPixmap == 0) { |
| 84 | JNU_ThrowOutOfMemoryError(env, "Cannot allocate pixmap for text"); |
| 85 | return JNI_FALSE0; |
| 86 | } |
| 87 | cData->monoPixmapGC = XCreateGC(awt_display, cData->monoPixmap, |
| 88 | 0, NULL((void*)0)); |
| 89 | if (cData->monoPixmapGC == NULL((void*)0)) { |
| 90 | XFreePixmap(awt_display, cData->monoPixmap); |
| 91 | cData->monoPixmap = 0; |
| 92 | JNU_ThrowOutOfMemoryError(env, "Cannot allocate pixmap for text"); |
| 93 | return JNI_FALSE0; |
| 94 | } |
| 95 | XSetForeground(awt_display, cData->monoPixmapGC, 1); |
| 96 | XSetBackground(awt_display, cData->monoPixmapGC, 0); |
| 97 | cData->monoPixmapWidth = TEXT_BM_WIDTH1024; |
| 98 | cData->monoPixmapHeight = TEXT_BM_HEIGHT32; |
| 99 | } |
| 100 | return JNI_TRUE1; |
| 101 | } |
| 102 | |
| 103 | static void FillBitmap(XImage *theImage, |
| 104 | ImageRef *glyphs, jint totalGlyphs, |
| 105 | jint clipLeft, jint clipTop, |
| 106 | jint clipRight, jint clipBottom) |
| 107 | { |
| 108 | int glyphCounter; |
| 109 | int scan = theImage->bytes_per_line; |
| 110 | int y, left, top, right, bottom, width, height; |
| 111 | jubyte *pPix; |
| 112 | const jubyte *pixels; |
| 113 | unsigned int rowBytes; |
| 114 | |
| 115 | pPix = (jubyte *) theImage->data; |
| 116 | glyphCounter = ((clipRight - clipLeft) + 7) >> 3; |
| 117 | for (y = clipTop; y < clipBottom; y++) { |
| 118 | memset(pPix, 0, glyphCounter); |
| 119 | pPix += scan; |
| 120 | } |
| 121 | |
| 122 | for (glyphCounter = 0; glyphCounter < totalGlyphs; glyphCounter++) { |
| 123 | pixels = (const jubyte *)glyphs[glyphCounter].pixels; |
| 124 | if (!pixels) { |
| 125 | continue; |
| 126 | } |
| 127 | rowBytes = glyphs[glyphCounter].width; |
| 128 | left = glyphs[glyphCounter].x; |
| 129 | top = glyphs[glyphCounter].y; |
| 130 | width = glyphs[glyphCounter].width; |
| 131 | height = glyphs[glyphCounter].height; |
| 132 | |
| 133 | /* if any clipping required, modify parameters now */ |
| 134 | right = left + width; |
| 135 | bottom = top + height; |
| 136 | if (left < clipLeft) { |
| 137 | pixels += clipLeft - left; |
| 138 | left = clipLeft; |
| 139 | } |
| 140 | if (top < clipTop) { |
| 141 | pixels += (clipTop - top) * rowBytes; |
| 142 | top = clipTop; |
| 143 | } |
| 144 | if (right > clipRight) { |
| 145 | right = clipRight; |
| 146 | } |
| 147 | if (bottom > clipBottom) { |
| 148 | bottom = clipBottom; |
| 149 | } |
| 150 | if (right <= left || bottom <= top) { |
| 151 | continue; |
| 152 | } |
| 153 | width = right - left; |
| 154 | height = bottom - top; |
| 155 | top -= clipTop; |
| 156 | left -= clipLeft; |
| 157 | pPix = ((jubyte *) theImage->data) + (left >> 3) + (intptr_t) top * scan; |
| 158 | left &= 0x07; |
| 159 | if (theImage->bitmap_bit_order == MSBFirst1) { |
| 160 | left = 0x80 >> left; |
| 161 | do { |
| 162 | int x = 0, bx = 0; |
| 163 | int pix = pPix[0]; |
| 164 | int bit = left; |
| 165 | do { |
| 166 | if (bit == 0) { |
| 167 | pPix[bx] = (jubyte) pix; |
| 168 | pix = pPix[++bx]; |
| 169 | bit = 0x80; |
| 170 | } |
| 171 | if (pixels[x]) { |
| 172 | pix |= bit; |
| 173 | } |
| 174 | bit >>= 1; |
| 175 | } while (++x < width); |
| 176 | pPix[bx] = (jubyte) pix; |
| 177 | pPix += scan; |
| 178 | pixels += rowBytes; |
| 179 | } while (--height > 0); |
| 180 | } else { |
| 181 | left = 1 << left; |
| 182 | do { |
| 183 | int x = 0, bx = 0; |
| 184 | int pix = pPix[0]; |
| 185 | int bit = left; |
| 186 | do { |
| 187 | if ((bit >> 8) != 0) { |
| 188 | pPix[bx] = (jubyte) pix; |
| 189 | pix = pPix[++bx]; |
| 190 | bit = 1; |
| 191 | } |
| 192 | if (pixels[x]) { |
| 193 | pix |= bit; |
| 194 | } |
| 195 | bit <<= 1; |
| 196 | } while (++x < width); |
| 197 | pPix[bx] = (jubyte) pix; |
| 198 | pPix += scan; |
| 199 | pixels += rowBytes; |
| 200 | } while (--height > 0); |
| 201 | } |
| 202 | } |
| 203 | } |
| 204 | #endif /* !HEADLESS */ |
| 205 | |
| 206 | JNIEXPORT__attribute__((visibility("default"))) void JNICALL |
| 207 | AWTDrawGlyphList(JNIEnv *env, jobject xtr, |
| 208 | jlong dstData, jlong gc, |
| 209 | SurfaceDataBounds *bounds, ImageRef *glyphs, jint totalGlyphs) |
| 210 | { |
| 211 | #ifndef HEADLESS |
| 212 | GC xgc, theGC; |
| 213 | XImage *theImage; |
| 214 | Pixmap thePixmap; |
| 215 | XGCValues xgcv; |
| 216 | int scan, screen; |
| 217 | AwtGraphicsConfigDataPtr cData; |
| 218 | X11SDOps *xsdo = (X11SDOps *)jlong_to_ptr(dstData)((void*)(dstData)); |
| 219 | jint cx1, cy1, cx2, cy2; |
| 220 | |
| 221 | if (xsdo == NULL((void*)0)) { |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | xgc = (GC)gc; |
| 226 | if (xgc == NULL((void*)0)) { |
| 227 | return; |
| 228 | } |
| 229 | |
| 230 | screen = xsdo->configData->awt_visInfo.screen; |
| 231 | cData = getDefaultConfig(screen); |
| 232 | if (!checkPixmap(env, cData)) { |
| 233 | return; |
| 234 | } |
| 235 | theImage = cData->monoImage; |
| 236 | thePixmap = cData->monoPixmap; |
| 237 | theGC = cData->monoPixmapGC; |
| 238 | |
| 239 | scan = theImage->bytes_per_line; |
Value stored to 'scan' is never read | |
| 240 | |
| 241 | xgcv.fill_style = FillStippled2; |
| 242 | xgcv.stipple = thePixmap; |
| 243 | xgcv.ts_x_origin = bounds->x1; |
| 244 | xgcv.ts_y_origin = bounds->y1; |
| 245 | XChangeGC(awt_display, xgc, |
| 246 | GCFillStyle(1L<<8) | GCStipple(1L<<11) | GCTileStipXOrigin(1L<<12) | GCTileStipYOrigin(1L<<13), |
| 247 | &xgcv); |
| 248 | |
| 249 | cy1 = bounds->y1; |
| 250 | while (cy1 < bounds->y2) { |
| 251 | cy2 = cy1 + TEXT_BM_HEIGHT32; |
| 252 | if (cy2 > bounds->y2) cy2 = bounds->y2; |
| 253 | |
| 254 | cx1 = bounds->x1; |
| 255 | while (cx1 < bounds->x2) { |
| 256 | cx2 = cx1 + TEXT_BM_WIDTH1024; |
| 257 | if (cx2 > bounds->x2) cx2 = bounds->x2; |
| 258 | |
| 259 | FillBitmap(theImage, |
| 260 | glyphs, |
| 261 | totalGlyphs, |
| 262 | cx1, cy1, cx2, cy2); |
| 263 | |
| 264 | // NOTE: Since we are tiling around by BM_W, BM_H offsets |
| 265 | // and thePixmap is BM_W x BM_H, we do not have to move |
| 266 | // the TSOrigin at each step since the stipple repeats |
| 267 | // every BM_W, BM_H units |
| 268 | XPutImage(awt_display, thePixmap, theGC, theImage, |
| 269 | 0, 0, 0, 0, cx2 - cx1, cy2 - cy1); |
| 270 | /* MGA on Linux doesn't pick up the new stipple image data, |
| 271 | * probably because it caches the image as a hardware pixmap |
| 272 | * and doesn't update it when the pixmap image data is changed. |
| 273 | * So if the loop is executed more than once, update the GC |
| 274 | * which triggers the required behaviour. This extra XChangeGC |
| 275 | * call only happens on large or rotated text so isn't a |
| 276 | * significant new overhead.. |
| 277 | * This code needs to execute on a Solaris client too, in case |
| 278 | * we are remote displaying to a MGA. |
| 279 | */ |
| 280 | if (cy1 != bounds->y1 || cx1 != bounds->x1) { |
| 281 | XChangeGC(awt_display, xgc, GCStipple(1L<<11), &xgcv); |
| 282 | } |
| 283 | |
| 284 | XFillRectangle(awt_display, xsdo->drawable, xgc, |
| 285 | cx1, cy1, cx2 - cx1, cy2 - cy1); |
| 286 | |
| 287 | cx1 = cx2; |
| 288 | } |
| 289 | |
| 290 | cy1 = cy2; |
| 291 | } |
| 292 | XSetFillStyle(awt_display, xgc, FillSolid0); |
| 293 | |
| 294 | X11SD_DirectRenderNotify(env, xsdo); |
| 295 | #endif /* !HEADLESS */ |
| 296 | } |