Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <cutils/compiler.h> |
| 18 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 19 | #include <utils/JenkinsHash.h> |
Romain Guy | bd3055f | 2013-03-13 16:14:47 -0700 | [diff] [blame] | 20 | #include <utils/Trace.h> |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 21 | |
Leon Scroggins III | 0e9059b | 2015-06-19 17:42:41 -0400 | [diff] [blame] | 22 | #include <SkSurfaceProps.h> |
Romain Guy | 14c40b4 | 2013-01-08 18:03:07 -0800 | [diff] [blame] | 23 | #include <SkGlyph.h> |
Victoria Lease | 43b692d | 2013-12-03 15:02:28 -0800 | [diff] [blame] | 24 | #include <SkGlyphCache.h> |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 25 | #include <SkUtils.h> |
| 26 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 27 | #include "FontUtil.h" |
| 28 | #include "Font.h" |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 29 | #include "../Debug.h" |
| 30 | #include "../FontRenderer.h" |
| 31 | #include "../PixelBuffer.h" |
| 32 | #include "../Properties.h" |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 33 | |
| 34 | namespace android { |
| 35 | namespace uirenderer { |
| 36 | |
| 37 | /////////////////////////////////////////////////////////////////////////////// |
| 38 | // Font |
| 39 | /////////////////////////////////////////////////////////////////////////////// |
| 40 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 41 | Font::Font(FontRenderer* state, const Font::FontDescription& desc) : |
Derek Sollenberger | 413995e | 2014-10-13 11:18:53 -0400 | [diff] [blame] | 42 | mState(state), mDescription(desc) { } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 43 | |
Chris Craik | 59744b7 | 2014-07-01 17:56:52 -0700 | [diff] [blame] | 44 | Font::FontDescription::FontDescription(const SkPaint* paint, const SkMatrix& rasterMatrix) |
| 45 | : mLookupTransform(rasterMatrix) { |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 46 | mFontId = SkTypeface::UniqueID(paint->getTypeface()); |
| 47 | mFontSize = paint->getTextSize(); |
| 48 | mFlags = 0; |
| 49 | if (paint->isFakeBoldText()) { |
| 50 | mFlags |= Font::kFakeBold; |
| 51 | } |
| 52 | mItalicStyle = paint->getTextSkewX(); |
| 53 | mScaleX = paint->getTextScaleX(); |
| 54 | mStyle = paint->getStyle(); |
| 55 | mStrokeWidth = paint->getStrokeWidth(); |
Romain Guy | b969a0d | 2013-02-05 14:38:40 -0800 | [diff] [blame] | 56 | mAntiAliasing = paint->isAntiAlias(); |
Romain Guy | 2d5945e | 2013-06-18 12:59:25 -0700 | [diff] [blame] | 57 | mHinting = paint->getHinting(); |
Romain Guy | 874f5c6 | 2013-03-01 18:07:35 -0800 | [diff] [blame] | 58 | if (!mLookupTransform.invert(&mInverseLookupTransform)) { |
| 59 | ALOGW("Could not query the inverse lookup transform for this font"); |
| 60 | } |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 61 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 62 | |
| 63 | Font::~Font() { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 64 | for (uint32_t i = 0; i < mCachedGlyphs.size(); i++) { |
| 65 | delete mCachedGlyphs.valueAt(i); |
| 66 | } |
| 67 | } |
| 68 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 69 | hash_t Font::FontDescription::hash() const { |
| 70 | uint32_t hash = JenkinsHashMix(0, mFontId); |
| 71 | hash = JenkinsHashMix(hash, android::hash_type(mFontSize)); |
| 72 | hash = JenkinsHashMix(hash, android::hash_type(mFlags)); |
| 73 | hash = JenkinsHashMix(hash, android::hash_type(mItalicStyle)); |
| 74 | hash = JenkinsHashMix(hash, android::hash_type(mScaleX)); |
| 75 | hash = JenkinsHashMix(hash, android::hash_type(mStyle)); |
| 76 | hash = JenkinsHashMix(hash, android::hash_type(mStrokeWidth)); |
Romain Guy | b969a0d | 2013-02-05 14:38:40 -0800 | [diff] [blame] | 77 | hash = JenkinsHashMix(hash, int(mAntiAliasing)); |
Romain Guy | 2d5945e | 2013-06-18 12:59:25 -0700 | [diff] [blame] | 78 | hash = JenkinsHashMix(hash, android::hash_type(mHinting)); |
Romain Guy | c74f45a | 2013-02-26 19:10:14 -0800 | [diff] [blame] | 79 | hash = JenkinsHashMix(hash, android::hash_type(mLookupTransform[SkMatrix::kMScaleX])); |
| 80 | hash = JenkinsHashMix(hash, android::hash_type(mLookupTransform[SkMatrix::kMScaleY])); |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 81 | return JenkinsHashWhiten(hash); |
| 82 | } |
| 83 | |
| 84 | int Font::FontDescription::compare(const Font::FontDescription& lhs, |
| 85 | const Font::FontDescription& rhs) { |
| 86 | int deltaInt = int(lhs.mFontId) - int(rhs.mFontId); |
| 87 | if (deltaInt != 0) return deltaInt; |
| 88 | |
| 89 | if (lhs.mFontSize < rhs.mFontSize) return -1; |
| 90 | if (lhs.mFontSize > rhs.mFontSize) return +1; |
| 91 | |
| 92 | if (lhs.mItalicStyle < rhs.mItalicStyle) return -1; |
| 93 | if (lhs.mItalicStyle > rhs.mItalicStyle) return +1; |
| 94 | |
| 95 | deltaInt = int(lhs.mFlags) - int(rhs.mFlags); |
| 96 | if (deltaInt != 0) return deltaInt; |
| 97 | |
| 98 | if (lhs.mScaleX < rhs.mScaleX) return -1; |
| 99 | if (lhs.mScaleX > rhs.mScaleX) return +1; |
| 100 | |
| 101 | deltaInt = int(lhs.mStyle) - int(rhs.mStyle); |
| 102 | if (deltaInt != 0) return deltaInt; |
| 103 | |
| 104 | if (lhs.mStrokeWidth < rhs.mStrokeWidth) return -1; |
| 105 | if (lhs.mStrokeWidth > rhs.mStrokeWidth) return +1; |
| 106 | |
Romain Guy | b969a0d | 2013-02-05 14:38:40 -0800 | [diff] [blame] | 107 | deltaInt = int(lhs.mAntiAliasing) - int(rhs.mAntiAliasing); |
| 108 | if (deltaInt != 0) return deltaInt; |
| 109 | |
Romain Guy | 2d5945e | 2013-06-18 12:59:25 -0700 | [diff] [blame] | 110 | deltaInt = int(lhs.mHinting) - int(rhs.mHinting); |
| 111 | if (deltaInt != 0) return deltaInt; |
| 112 | |
Romain Guy | c74f45a | 2013-02-26 19:10:14 -0800 | [diff] [blame] | 113 | if (lhs.mLookupTransform[SkMatrix::kMScaleX] < |
| 114 | rhs.mLookupTransform[SkMatrix::kMScaleX]) return -1; |
| 115 | if (lhs.mLookupTransform[SkMatrix::kMScaleX] > |
| 116 | rhs.mLookupTransform[SkMatrix::kMScaleX]) return +1; |
| 117 | |
| 118 | if (lhs.mLookupTransform[SkMatrix::kMScaleY] < |
| 119 | rhs.mLookupTransform[SkMatrix::kMScaleY]) return -1; |
| 120 | if (lhs.mLookupTransform[SkMatrix::kMScaleY] > |
| 121 | rhs.mLookupTransform[SkMatrix::kMScaleY]) return +1; |
| 122 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 123 | return 0; |
| 124 | } |
| 125 | |
Romain Guy | 8087246 | 2012-09-04 16:42:01 -0700 | [diff] [blame] | 126 | void Font::invalidateTextureCache(CacheTexture* cacheTexture) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 127 | for (uint32_t i = 0; i < mCachedGlyphs.size(); i++) { |
| 128 | CachedGlyphInfo* cachedGlyph = mCachedGlyphs.valueAt(i); |
Romain Guy | 521dc51 | 2012-09-04 19:10:33 -0700 | [diff] [blame] | 129 | if (!cacheTexture || cachedGlyph->mCacheTexture == cacheTexture) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 130 | cachedGlyph->mIsValid = false; |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | void Font::measureCachedGlyph(CachedGlyphInfo *glyph, int x, int y, |
Andreas Gampe | 64bb413 | 2014-11-22 00:35:09 +0000 | [diff] [blame] | 136 | uint8_t* bitmap, uint32_t bitmapW, uint32_t bitmapH, Rect* bounds, const float* pos) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 137 | int width = (int) glyph->mBitmapWidth; |
| 138 | int height = (int) glyph->mBitmapHeight; |
| 139 | |
Chris Craik | 39c5e7c | 2014-08-15 15:46:37 -0700 | [diff] [blame] | 140 | int nPenX = x + glyph->mBitmapLeft; |
| 141 | int nPenY = y + glyph->mBitmapTop; |
| 142 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 143 | if (bounds->bottom > nPenY) { |
| 144 | bounds->bottom = nPenY; |
| 145 | } |
| 146 | if (bounds->left > nPenX) { |
| 147 | bounds->left = nPenX; |
| 148 | } |
| 149 | if (bounds->right < nPenX + width) { |
| 150 | bounds->right = nPenX + width; |
| 151 | } |
| 152 | if (bounds->top < nPenY + height) { |
| 153 | bounds->top = nPenY + height; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | void Font::drawCachedGlyph(CachedGlyphInfo* glyph, int x, int y, |
Andreas Gampe | 64bb413 | 2014-11-22 00:35:09 +0000 | [diff] [blame] | 158 | uint8_t* bitmap, uint32_t bitmapW, uint32_t bitmapH, Rect* bounds, const float* pos) { |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 159 | float width = (float) glyph->mBitmapWidth; |
| 160 | float height = (float) glyph->mBitmapHeight; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 161 | |
Chris Craik | 39c5e7c | 2014-08-15 15:46:37 -0700 | [diff] [blame] | 162 | float nPenX = x + glyph->mBitmapLeft; |
| 163 | float nPenY = y + glyph->mBitmapTop + height; |
| 164 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 165 | float u1 = glyph->mBitmapMinU; |
| 166 | float u2 = glyph->mBitmapMaxU; |
| 167 | float v1 = glyph->mBitmapMinV; |
| 168 | float v2 = glyph->mBitmapMaxV; |
| 169 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 170 | mState->appendMeshQuad(nPenX, nPenY, u1, v2, |
| 171 | nPenX + width, nPenY, u2, v2, |
| 172 | nPenX + width, nPenY - height, u2, v1, |
| 173 | nPenX, nPenY - height, u1, v1, glyph->mCacheTexture); |
| 174 | } |
| 175 | |
Romain Guy | 624234f | 2013-03-05 16:43:31 -0800 | [diff] [blame] | 176 | void Font::drawCachedGlyphTransformed(CachedGlyphInfo* glyph, int x, int y, |
Andreas Gampe | 64bb413 | 2014-11-22 00:35:09 +0000 | [diff] [blame] | 177 | uint8_t* bitmap, uint32_t bitmapW, uint32_t bitmapH, Rect* bounds, const float* pos) { |
Chris Craik | 39c5e7c | 2014-08-15 15:46:37 -0700 | [diff] [blame] | 178 | float width = (float) glyph->mBitmapWidth; |
| 179 | float height = (float) glyph->mBitmapHeight; |
| 180 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 181 | SkPoint p[4]; |
Chris Craik | 39c5e7c | 2014-08-15 15:46:37 -0700 | [diff] [blame] | 182 | p[0].iset(glyph->mBitmapLeft, glyph->mBitmapTop + height); |
| 183 | p[1].iset(glyph->mBitmapLeft + width, glyph->mBitmapTop + height); |
| 184 | p[2].iset(glyph->mBitmapLeft + width, glyph->mBitmapTop); |
Romain Guy | 874f5c6 | 2013-03-01 18:07:35 -0800 | [diff] [blame] | 185 | p[3].iset(glyph->mBitmapLeft, glyph->mBitmapTop); |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 186 | |
Romain Guy | 874f5c6 | 2013-03-01 18:07:35 -0800 | [diff] [blame] | 187 | mDescription.mInverseLookupTransform.mapPoints(p, 4); |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 188 | |
| 189 | p[0].offset(x, y); |
| 190 | p[1].offset(x, y); |
| 191 | p[2].offset(x, y); |
| 192 | p[3].offset(x, y); |
| 193 | |
| 194 | float u1 = glyph->mBitmapMinU; |
| 195 | float u2 = glyph->mBitmapMaxU; |
| 196 | float v1 = glyph->mBitmapMinV; |
| 197 | float v2 = glyph->mBitmapMaxV; |
| 198 | |
| 199 | mState->appendRotatedMeshQuad( |
Romain Guy | 874f5c6 | 2013-03-01 18:07:35 -0800 | [diff] [blame] | 200 | p[0].x(), p[0].y(), u1, v2, |
| 201 | p[1].x(), p[1].y(), u2, v2, |
| 202 | p[2].x(), p[2].y(), u2, v1, |
| 203 | p[3].x(), p[3].y(), u1, v1, glyph->mCacheTexture); |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 204 | } |
| 205 | |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 206 | void Font::drawCachedGlyphBitmap(CachedGlyphInfo* glyph, int x, int y, uint8_t* bitmap, |
Andreas Gampe | 64bb413 | 2014-11-22 00:35:09 +0000 | [diff] [blame] | 207 | uint32_t bitmapWidth, uint32_t bitmapHeight, Rect* bounds, const float* pos) { |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 208 | int dstX = x + glyph->mBitmapLeft; |
| 209 | int dstY = y + glyph->mBitmapTop; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 210 | |
Romain Guy | 8087246 | 2012-09-04 16:42:01 -0700 | [diff] [blame] | 211 | CacheTexture* cacheTexture = glyph->mCacheTexture; |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 212 | PixelBuffer* pixelBuffer = cacheTexture->getPixelBuffer(); |
Digish Pandya | b9312a5 | 2014-05-09 15:05:16 +0530 | [diff] [blame] | 213 | |
| 214 | uint32_t formatSize = PixelBuffer::formatSize(pixelBuffer->getFormat()); |
Digish Pandya | c62c1cc | 2014-05-12 14:37:04 +0530 | [diff] [blame] | 215 | uint32_t alpha_channel_offset = PixelBuffer::formatAlphaOffset(pixelBuffer->getFormat()); |
Digish Pandya | b9312a5 | 2014-05-09 15:05:16 +0530 | [diff] [blame] | 216 | uint32_t cacheWidth = cacheTexture->getWidth(); |
| 217 | uint32_t srcStride = formatSize * cacheWidth; |
| 218 | uint32_t startY = glyph->mStartY * srcStride; |
| 219 | uint32_t endY = startY + (glyph->mBitmapHeight * srcStride); |
| 220 | |
Romain Guy | cf51a41 | 2013-04-08 19:40:31 -0700 | [diff] [blame] | 221 | const uint8_t* cacheBuffer = pixelBuffer->map(); |
| 222 | |
| 223 | for (uint32_t cacheY = startY, bitmapY = dstY * bitmapWidth; cacheY < endY; |
Digish Pandya | b9312a5 | 2014-05-09 15:05:16 +0530 | [diff] [blame] | 224 | cacheY += srcStride, bitmapY += bitmapWidth) { |
| 225 | |
Chris Craik | de25a67 | 2015-06-30 13:12:24 -0700 | [diff] [blame] | 226 | for (uint32_t i = 0; i < glyph->mBitmapWidth; ++i) { |
| 227 | uint8_t* dst = &(bitmap[bitmapY + dstX + i]); |
| 228 | const uint8_t& src = cacheBuffer[ |
| 229 | cacheY + (glyph->mStartX + i)*formatSize + alpha_channel_offset]; |
| 230 | // Add alpha values to a max of 255, full opacity. This is done to handle |
| 231 | // fonts/strings where glyphs overlap. |
| 232 | *dst = std::min(*dst + src, 255); |
Digish Pandya | b9312a5 | 2014-05-09 15:05:16 +0530 | [diff] [blame] | 233 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 234 | } |
| 235 | } |
| 236 | |
| 237 | void Font::drawCachedGlyph(CachedGlyphInfo* glyph, float x, float hOffset, float vOffset, |
| 238 | SkPathMeasure& measure, SkPoint* position, SkVector* tangent) { |
| 239 | const float halfWidth = glyph->mBitmapWidth * 0.5f; |
| 240 | const float height = glyph->mBitmapHeight; |
| 241 | |
| 242 | vOffset += glyph->mBitmapTop + height; |
| 243 | |
| 244 | SkPoint destination[4]; |
Romain Guy | e67307c | 2013-02-11 18:01:20 -0800 | [diff] [blame] | 245 | bool ok = measure.getPosTan(x + hOffset + glyph->mBitmapLeft + halfWidth, position, tangent); |
| 246 | if (!ok) { |
| 247 | ALOGW("The path for drawTextOnPath is empty or null"); |
| 248 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 249 | |
| 250 | // Move along the tangent and offset by the normal |
| 251 | destination[0].set(-tangent->fX * halfWidth - tangent->fY * vOffset, |
| 252 | -tangent->fY * halfWidth + tangent->fX * vOffset); |
| 253 | destination[1].set(tangent->fX * halfWidth - tangent->fY * vOffset, |
| 254 | tangent->fY * halfWidth + tangent->fX * vOffset); |
| 255 | destination[2].set(destination[1].fX + tangent->fY * height, |
| 256 | destination[1].fY - tangent->fX * height); |
| 257 | destination[3].set(destination[0].fX + tangent->fY * height, |
| 258 | destination[0].fY - tangent->fX * height); |
| 259 | |
| 260 | const float u1 = glyph->mBitmapMinU; |
| 261 | const float u2 = glyph->mBitmapMaxU; |
| 262 | const float v1 = glyph->mBitmapMinV; |
| 263 | const float v2 = glyph->mBitmapMaxV; |
| 264 | |
| 265 | mState->appendRotatedMeshQuad( |
Romain Guy | 874f5c6 | 2013-03-01 18:07:35 -0800 | [diff] [blame] | 266 | position->x() + destination[0].x(), |
| 267 | position->y() + destination[0].y(), u1, v2, |
| 268 | position->x() + destination[1].x(), |
| 269 | position->y() + destination[1].y(), u2, v2, |
| 270 | position->x() + destination[2].x(), |
| 271 | position->y() + destination[2].y(), u2, v1, |
| 272 | position->x() + destination[3].x(), |
| 273 | position->y() + destination[3].y(), u1, v1, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 274 | glyph->mCacheTexture); |
| 275 | } |
| 276 | |
Chris Craik | d218a92 | 2014-01-02 17:13:34 -0800 | [diff] [blame] | 277 | CachedGlyphInfo* Font::getCachedGlyph(const SkPaint* paint, glyph_t textUnit, bool precaching) { |
Romain Guy | bd3055f | 2013-03-13 16:14:47 -0700 | [diff] [blame] | 278 | CachedGlyphInfo* cachedGlyph = mCachedGlyphs.valueFor(textUnit); |
| 279 | if (cachedGlyph) { |
Romain Guy | c74f45a | 2013-02-26 19:10:14 -0800 | [diff] [blame] | 280 | // Is the glyph still in texture cache? |
| 281 | if (!cachedGlyph->mIsValid) { |
Leon Scroggins III | 0e9059b | 2015-06-19 17:42:41 -0400 | [diff] [blame] | 282 | SkSurfaceProps surfaceProps(0, kUnknown_SkPixelGeometry); |
| 283 | SkAutoGlyphCacheNoGamma autoCache(*paint, &surfaceProps, &mDescription.mLookupTransform); |
Victoria Lease | 43b692d | 2013-12-03 15:02:28 -0800 | [diff] [blame] | 284 | const SkGlyph& skiaGlyph = GET_METRICS(autoCache.getCache(), textUnit); |
Victoria Lease | 2ee2d59 | 2013-12-17 13:54:29 -0800 | [diff] [blame] | 285 | updateGlyphCache(paint, skiaGlyph, autoCache.getCache(), cachedGlyph, precaching); |
Romain Guy | c74f45a | 2013-02-26 19:10:14 -0800 | [diff] [blame] | 286 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 287 | } else { |
| 288 | cachedGlyph = cacheGlyph(paint, textUnit, precaching); |
| 289 | } |
| 290 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 291 | return cachedGlyph; |
| 292 | } |
| 293 | |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 294 | void Font::render(const SkPaint* paint, const char *text, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 295 | int numGlyphs, int x, int y, const float* positions) { |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 296 | render(paint, text, numGlyphs, x, y, FRAMEBUFFER, nullptr, |
Chris Craik | d41c4d8 | 2015-01-05 15:51:13 -0800 | [diff] [blame] | 297 | 0, 0, nullptr, positions); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 300 | void Font::render(const SkPaint* paint, const char *text, int numGlyphs, |
| 301 | const SkPath* path, float hOffset, float vOffset) { |
| 302 | if (numGlyphs == 0 || text == nullptr) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 303 | return; |
| 304 | } |
| 305 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 306 | int glyphsCount = 0; |
| 307 | SkFixed prevRsbDelta = 0; |
| 308 | |
| 309 | float penX = 0.0f; |
| 310 | |
| 311 | SkPoint position; |
| 312 | SkVector tangent; |
| 313 | |
| 314 | SkPathMeasure measure(*path, false); |
| 315 | float pathLength = SkScalarToFloat(measure.getLength()); |
| 316 | |
| 317 | if (paint->getTextAlign() != SkPaint::kLeft_Align) { |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 318 | float textWidth = SkScalarToFloat(paint->measureText(text, numGlyphs * 2)); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 319 | float pathOffset = pathLength; |
| 320 | if (paint->getTextAlign() == SkPaint::kCenter_Align) { |
| 321 | textWidth *= 0.5f; |
| 322 | pathOffset *= 0.5f; |
| 323 | } |
| 324 | penX += pathOffset - textWidth; |
| 325 | } |
| 326 | |
| 327 | while (glyphsCount < numGlyphs && penX < pathLength) { |
| 328 | glyph_t glyph = GET_GLYPH(text); |
| 329 | |
| 330 | if (IS_END_OF_STRING(glyph)) { |
| 331 | break; |
| 332 | } |
| 333 | |
| 334 | CachedGlyphInfo* cachedGlyph = getCachedGlyph(paint, glyph); |
| 335 | penX += SkFixedToFloat(AUTO_KERN(prevRsbDelta, cachedGlyph->mLsbDelta)); |
| 336 | prevRsbDelta = cachedGlyph->mRsbDelta; |
| 337 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 338 | if (cachedGlyph->mIsValid && cachedGlyph->mCacheTexture) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 339 | drawCachedGlyph(cachedGlyph, penX, hOffset, vOffset, measure, &position, &tangent); |
| 340 | } |
| 341 | |
| 342 | penX += SkFixedToFloat(cachedGlyph->mAdvanceX); |
| 343 | |
| 344 | glyphsCount++; |
| 345 | } |
| 346 | } |
| 347 | |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 348 | void Font::measure(const SkPaint* paint, const char* text, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 349 | int numGlyphs, Rect *bounds, const float* positions) { |
Chris Craik | d41c4d8 | 2015-01-05 15:51:13 -0800 | [diff] [blame] | 350 | if (bounds == nullptr) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 351 | ALOGE("No return rectangle provided to measure text"); |
| 352 | return; |
| 353 | } |
| 354 | bounds->set(1e6, -1e6, -1e6, 1e6); |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 355 | render(paint, text, numGlyphs, 0, 0, MEASURE, nullptr, 0, 0, bounds, positions); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 356 | } |
| 357 | |
Chris Craik | d218a92 | 2014-01-02 17:13:34 -0800 | [diff] [blame] | 358 | void Font::precache(const SkPaint* paint, const char* text, int numGlyphs) { |
Chris Craik | 70850ea | 2014-11-18 10:49:23 -0800 | [diff] [blame] | 359 | ATRACE_NAME("Precache Glyphs"); |
Romain Guy | bd3055f | 2013-03-13 16:14:47 -0700 | [diff] [blame] | 360 | |
Chris Craik | d41c4d8 | 2015-01-05 15:51:13 -0800 | [diff] [blame] | 361 | if (numGlyphs == 0 || text == nullptr) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 362 | return; |
| 363 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 364 | |
Romain Guy | bd3055f | 2013-03-13 16:14:47 -0700 | [diff] [blame] | 365 | int glyphsCount = 0; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 366 | while (glyphsCount < numGlyphs) { |
| 367 | glyph_t glyph = GET_GLYPH(text); |
| 368 | |
| 369 | // Reached the end of the string |
| 370 | if (IS_END_OF_STRING(glyph)) { |
| 371 | break; |
| 372 | } |
| 373 | |
Andreas Gampe | edaecc1 | 2014-11-10 20:54:07 -0800 | [diff] [blame] | 374 | getCachedGlyph(paint, glyph, true); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 375 | glyphsCount++; |
| 376 | } |
| 377 | } |
| 378 | |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 379 | void Font::render(const SkPaint* paint, const char* text, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 380 | int numGlyphs, int x, int y, RenderMode mode, uint8_t *bitmap, |
| 381 | uint32_t bitmapW, uint32_t bitmapH, Rect* bounds, const float* positions) { |
Chris Craik | a171727 | 2015-11-19 13:02:43 -0800 | [diff] [blame^] | 382 | if (numGlyphs == 0 || text == nullptr) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 383 | return; |
| 384 | } |
| 385 | |
| 386 | static RenderGlyph gRenderGlyph[] = { |
| 387 | &android::uirenderer::Font::drawCachedGlyph, |
Romain Guy | 624234f | 2013-03-05 16:43:31 -0800 | [diff] [blame] | 388 | &android::uirenderer::Font::drawCachedGlyphTransformed, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 389 | &android::uirenderer::Font::drawCachedGlyphBitmap, |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 390 | &android::uirenderer::Font::drawCachedGlyphBitmap, |
| 391 | &android::uirenderer::Font::measureCachedGlyph, |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 392 | &android::uirenderer::Font::measureCachedGlyph |
| 393 | }; |
Romain Guy | 624234f | 2013-03-05 16:43:31 -0800 | [diff] [blame] | 394 | RenderGlyph render = gRenderGlyph[(mode << 1) + !mIdentityTransform]; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 395 | |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 396 | int glyphsCount = 0; |
| 397 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 398 | while (glyphsCount < numGlyphs) { |
| 399 | glyph_t glyph = GET_GLYPH(text); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 400 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 401 | // Reached the end of the string |
| 402 | if (IS_END_OF_STRING(glyph)) { |
| 403 | break; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 404 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 405 | |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 406 | CachedGlyphInfo* cachedGlyph = getCachedGlyph(paint, glyph); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 407 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 408 | // If it's still not valid, we couldn't cache it, so we shouldn't |
| 409 | // draw garbage; also skip empty glyphs (spaces) |
| 410 | if (cachedGlyph->mIsValid && cachedGlyph->mCacheTexture) { |
Alexander Toresson | 3ed1927 | 2013-08-28 16:13:06 +0200 | [diff] [blame] | 411 | int penX = x + (int) roundf(positions[(glyphsCount << 1)]); |
| 412 | int penY = y + (int) roundf(positions[(glyphsCount << 1) + 1]); |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 413 | |
Alexander Toresson | 3ed1927 | 2013-08-28 16:13:06 +0200 | [diff] [blame] | 414 | (*this.*render)(cachedGlyph, penX, penY, |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 415 | bitmap, bitmapW, bitmapH, bounds, positions); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 416 | } |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 417 | |
| 418 | glyphsCount++; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 419 | } |
| 420 | } |
| 421 | |
Andreas Gampe | 64bb413 | 2014-11-22 00:35:09 +0000 | [diff] [blame] | 422 | void Font::updateGlyphCache(const SkPaint* paint, const SkGlyph& skiaGlyph, |
Chris Craik | d218a92 | 2014-01-02 17:13:34 -0800 | [diff] [blame] | 423 | SkGlyphCache* skiaGlyphCache, CachedGlyphInfo* glyph, bool precaching) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 424 | glyph->mAdvanceX = skiaGlyph.fAdvanceX; |
| 425 | glyph->mAdvanceY = skiaGlyph.fAdvanceY; |
| 426 | glyph->mBitmapLeft = skiaGlyph.fLeft; |
| 427 | glyph->mBitmapTop = skiaGlyph.fTop; |
| 428 | glyph->mLsbDelta = skiaGlyph.fLsbDelta; |
| 429 | glyph->mRsbDelta = skiaGlyph.fRsbDelta; |
| 430 | |
| 431 | uint32_t startX = 0; |
| 432 | uint32_t startY = 0; |
| 433 | |
| 434 | // Get the bitmap for the glyph |
Romain Guy | b969a0d | 2013-02-05 14:38:40 -0800 | [diff] [blame] | 435 | if (!skiaGlyph.fImage) { |
Victoria Lease | 2ee2d59 | 2013-12-17 13:54:29 -0800 | [diff] [blame] | 436 | skiaGlyphCache->findImage(skiaGlyph); |
Romain Guy | b969a0d | 2013-02-05 14:38:40 -0800 | [diff] [blame] | 437 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 438 | mState->cacheBitmap(skiaGlyph, glyph, &startX, &startY, precaching); |
| 439 | |
| 440 | if (!glyph->mIsValid) { |
| 441 | return; |
| 442 | } |
| 443 | |
| 444 | uint32_t endX = startX + skiaGlyph.fWidth; |
| 445 | uint32_t endY = startY + skiaGlyph.fHeight; |
| 446 | |
| 447 | glyph->mStartX = startX; |
| 448 | glyph->mStartY = startY; |
| 449 | glyph->mBitmapWidth = skiaGlyph.fWidth; |
| 450 | glyph->mBitmapHeight = skiaGlyph.fHeight; |
| 451 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 452 | bool empty = skiaGlyph.fWidth == 0 || skiaGlyph.fHeight == 0; |
| 453 | if (!empty) { |
| 454 | uint32_t cacheWidth = glyph->mCacheTexture->getWidth(); |
| 455 | uint32_t cacheHeight = glyph->mCacheTexture->getHeight(); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 456 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 457 | glyph->mBitmapMinU = startX / (float) cacheWidth; |
| 458 | glyph->mBitmapMinV = startY / (float) cacheHeight; |
| 459 | glyph->mBitmapMaxU = endX / (float) cacheWidth; |
| 460 | glyph->mBitmapMaxV = endY / (float) cacheHeight; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 461 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 462 | mState->setTextureDirty(); |
| 463 | } |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 464 | } |
| 465 | |
Chris Craik | d218a92 | 2014-01-02 17:13:34 -0800 | [diff] [blame] | 466 | CachedGlyphInfo* Font::cacheGlyph(const SkPaint* paint, glyph_t glyph, bool precaching) { |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 467 | CachedGlyphInfo* newGlyph = new CachedGlyphInfo(); |
| 468 | mCachedGlyphs.add(glyph, newGlyph); |
| 469 | |
Leon Scroggins III | 0e9059b | 2015-06-19 17:42:41 -0400 | [diff] [blame] | 470 | SkSurfaceProps surfaceProps(0, kUnknown_SkPixelGeometry); |
| 471 | SkAutoGlyphCacheNoGamma autoCache(*paint, &surfaceProps, &mDescription.mLookupTransform); |
Victoria Lease | 43b692d | 2013-12-03 15:02:28 -0800 | [diff] [blame] | 472 | const SkGlyph& skiaGlyph = GET_METRICS(autoCache.getCache(), glyph); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 473 | newGlyph->mIsValid = false; |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 474 | newGlyph->mGlyphIndex = skiaGlyph.fID; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 475 | |
Victoria Lease | 2ee2d59 | 2013-12-17 13:54:29 -0800 | [diff] [blame] | 476 | updateGlyphCache(paint, skiaGlyph, autoCache.getCache(), newGlyph, precaching); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 477 | |
| 478 | return newGlyph; |
| 479 | } |
| 480 | |
Chris Craik | 59744b7 | 2014-07-01 17:56:52 -0700 | [diff] [blame] | 481 | Font* Font::create(FontRenderer* state, const SkPaint* paint, const SkMatrix& matrix) { |
Romain Guy | e3a9b24 | 2013-01-08 11:15:30 -0800 | [diff] [blame] | 482 | FontDescription description(paint, matrix); |
| 483 | Font* font = state->mActiveFonts.get(description); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 484 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 485 | if (!font) { |
| 486 | font = new Font(state, description); |
| 487 | state->mActiveFonts.put(description, font); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 488 | } |
Romain Guy | 624234f | 2013-03-05 16:43:31 -0800 | [diff] [blame] | 489 | font->mIdentityTransform = matrix.isIdentity(); |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 490 | |
Romain Guy | a4adcf0 | 2013-02-28 12:15:35 -0800 | [diff] [blame] | 491 | return font; |
Romain Guy | 9f5dab3 | 2012-09-04 12:55:44 -0700 | [diff] [blame] | 492 | } |
| 493 | |
| 494 | }; // namespace uirenderer |
| 495 | }; // namespace android |