1fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot/* 2fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Copyright 2015 Google Inc. 3fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * 4fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Use of this source code is governed by a BSD-style license that can be 5fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * found in the LICENSE file. 6fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot */ 7fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 8fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "GrTextUtils.h" 9fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "GrContext.h" 10fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkDrawFilter.h" 11fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkDrawProcs.h" 12fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkGlyphCache.h" 13fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkGr.h" 14fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkPaint.h" 15fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkTextBlobRunIterator.h" 16fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkTextMapStateProc.h" 17fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "SkTextToPathIter.h" 18fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 19fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrTextUtils::Paint::initFilteredColor() { 20fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // This mirrors the logic in skpaint_to_grpaint_impl for handling paint colors 21fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fDstColorSpaceInfo->colorSpace()) { 22fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrColor4f filteredColor = 23fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkColorToUnpremulGrColor4f(fPaint->getColor(), *fDstColorSpaceInfo); 24fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fPaint->getColorFilter()) { 25fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot filteredColor = GrColor4f::FromSkColor4f( 26fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fPaint->getColorFilter()->filterColor4f(filteredColor.toSkColor4f())); 27fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 28fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fFilteredPremulColor = filteredColor.premul().toGrColor(); 29fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 30fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkColor filteredSkColor = fPaint->getColor(); 31fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fPaint->getColorFilter()) { 32fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot filteredSkColor = fPaint->getColorFilter()->filterColor(filteredSkColor); 33fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 34fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fFilteredPremulColor = SkColorToPremulGrColor(filteredSkColor); 35fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 36fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 37fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 38fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotbool GrTextUtils::RunPaint::modifyForRun(const SkTextBlobRunIterator& run) { 39fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!fModifiedPaint.isValid()) { 40fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fModifiedPaint.init(fOriginalPaint->skPaint()); 41fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fPaint = fModifiedPaint.get(); 42fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else if (fFilter) { 43fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // We have to reset before applying the run because the filter could have arbitrary 44fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // changed the paint. 45fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot *fModifiedPaint.get() = fOriginalPaint->skPaint(); 46fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 47fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot run.applyFontToPaint(fModifiedPaint.get()); 48fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 49fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (fFilter) { 50fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!fFilter->filter(fModifiedPaint.get(), SkDrawFilter::kText_Type)) { 51fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // A false return from filter() means we should abort the current draw. 52fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return false; 53fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 54fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // The draw filter could have changed either the paint color or color filter. 55fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->initFilteredColor(); 56fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 57fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fModifiedPaint.get()->setFlags(FilterTextFlags(fProps, *fModifiedPaint.get())); 58fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return true; 59fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 60fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 61fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotuint32_t GrTextUtils::FilterTextFlags(const SkSurfaceProps& surfaceProps, const SkPaint& paint) { 62fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot uint32_t flags = paint.getFlags(); 63fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 64fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!paint.isLCDRenderText() || !paint.isAntiAlias()) { 65fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return flags; 66fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 67fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 68fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (kUnknown_SkPixelGeometry == surfaceProps.pixelGeometry() || ShouldDisableLCD(paint)) { 69fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot flags &= ~SkPaint::kLCDRenderText_Flag; 70fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot flags |= SkPaint::kGenA8FromLCD_Flag; 71fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 72fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 73fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return flags; 74fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 75fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 76fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotbool GrTextUtils::ShouldDisableLCD(const SkPaint& paint) { 77fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return paint.getMaskFilter() || paint.getPathEffect() || 78fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.isFakeBoldText() || paint.getStyle() != SkPaint::kFill_Style; 79fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 80fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 81fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrTextUtils::DrawBigText(GrTextUtils::Target* target, 82fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const GrClip& clip, const SkPaint& paint, 83fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkMatrix& viewMatrix, const char text[], size_t byteLength, 84fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkScalar x, SkScalar y, const SkIRect& clipBounds) { 85fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!paint.countText(text, byteLength)) { 86fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return; 87fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 88fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkTextToPathIter iter(text, byteLength, paint, true); 89fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 90fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkMatrix matrix; 91fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix.setScale(iter.getPathScale(), iter.getPathScale()); 92fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix.postTranslate(x, y); 93fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 94fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkPath* iterPath; 95fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkScalar xpos, prevXPos = 0; 96fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 97fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot while (iter.next(&iterPath, &xpos)) { 98fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix.postTranslate(xpos - prevXPos, 0); 99fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (iterPath) { 100fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkPaint& pnt = iter.getPaint(); 101fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot target->drawPath(clip, *iterPath, pnt, viewMatrix, &matrix, clipBounds); 102fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 103fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot prevXPos = xpos; 104fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 105fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 106fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 107fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrTextUtils::DrawBigPosText(GrTextUtils::Target* target, 108fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkSurfaceProps& props, const GrClip& clip, 109fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkPaint& origPaint, const SkMatrix& viewMatrix, 110fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char text[], size_t byteLength, const SkScalar pos[], 111fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot int scalarsPerPosition, const SkPoint& offset, 112fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkIRect& clipBounds) { 113fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (!origPaint.countText(text, byteLength)) { 114fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return; 115fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 116fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // setup our std paint, in hopes of getting hits in the cache 117fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkPaint paint(origPaint); 118fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkScalar matrixScale = paint.setupForAsPaths(); 119fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 120fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkMatrix matrix; 121fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix.setScale(matrixScale, matrixScale); 122fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 123fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // Temporarily jam in kFill, so we only ever ask for the raw outline from the cache. 124fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.setStyle(SkPaint::kFill_Style); 125fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.setPathEffect(nullptr); 126fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 127fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkPaint::GlyphCacheProc glyphCacheProc = SkPaint::GetGlyphCacheProc(paint.getTextEncoding(), 128fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.isDevKernText(), 129fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot true); 130fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkAutoGlyphCache autoCache(paint, &props, nullptr); 131fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkGlyphCache* cache = autoCache.getCache(); 132fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 133fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* stop = text + byteLength; 134fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkTextAlignProc alignProc(paint.getTextAlign()); 135fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkTextMapStateProc tmsProc(SkMatrix::I(), offset, scalarsPerPosition); 136fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 137fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // Now restore the original settings, so we "draw" with whatever style/stroking. 138fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.setStyle(origPaint.getStyle()); 139fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot paint.setPathEffect(origPaint.refPathEffect()); 140fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 141fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot while (text < stop) { 142fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkGlyph& glyph = glyphCacheProc(cache, &text); 143fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (glyph.fWidth) { 144fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkPath* path = cache->findPath(glyph); 145fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (path) { 146fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkPoint tmsLoc; 147fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot tmsProc(pos, &tmsLoc); 148fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkPoint loc; 149fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot alignProc(tmsLoc, glyph, &loc); 150fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 151fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix[SkMatrix::kMTransX] = loc.fX; 152fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot matrix[SkMatrix::kMTransY] = loc.fY; 153fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot target->drawPath(clip, *path, paint, viewMatrix, &matrix, clipBounds); 154fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 155fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 156fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot pos += scalarsPerPosition; 157fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 158fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 159