TestUtils.cpp revision 021693b967a2c5556dddd183eb0247df4079e1ad 
1/*
2 * Copyright (C) 2015 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 "TestUtils.h"
18
19#include "hwui/Paint.h"
20#include "DeferredLayerUpdater.h"
21
22#include <renderthread/EglManager.h>
23#include <renderthread/OpenGLPipeline.h>
24#include <utils/Unicode.h>
25
26namespace android {
27namespace uirenderer {
28
29SkColor TestUtils::interpolateColor(float fraction, SkColor start, SkColor end) {
30    int startA = (start >> 24) & 0xff;
31    int startR = (start >> 16) & 0xff;
32    int startG = (start >> 8) & 0xff;
33    int startB = start & 0xff;
34
35    int endA = (end >> 24) & 0xff;
36    int endR = (end >> 16) & 0xff;
37    int endG = (end >> 8) & 0xff;
38    int endB = end & 0xff;
39
40    return (int)((startA + (int)(fraction * (endA - startA))) << 24)
41            | (int)((startR + (int)(fraction * (endR - startR))) << 16)
42            | (int)((startG + (int)(fraction * (endG - startG))) << 8)
43            | (int)((startB + (int)(fraction * (endB - startB))));
44}
45
46sp<DeferredLayerUpdater> TestUtils::createTextureLayerUpdater(
47        renderthread::RenderThread& renderThread, uint32_t width, uint32_t height,
48        const SkMatrix& transform) {
49    renderthread::OpenGLPipeline pipeline(renderThread);
50    sp<DeferredLayerUpdater> layerUpdater = pipeline.createTextureLayer();
51    layerUpdater->backingLayer()->getTransform().load(transform);
52    layerUpdater->setSize(width, height);
53    layerUpdater->setTransform(&transform);
54
55    // updateLayer so it's ready to draw
56    layerUpdater->updateLayer(true, GL_TEXTURE_EXTERNAL_OES, Matrix4::identity().data);
57    return layerUpdater;
58}
59
60void TestUtils::layoutTextUnscaled(const SkPaint& paint, const char* text,
61        std::vector<glyph_t>* outGlyphs, std::vector<float>* outPositions,
62        float* outTotalAdvance, Rect* outBounds) {
63    Rect bounds;
64    float totalAdvance = 0;
65    SkSurfaceProps surfaceProps(0, kUnknown_SkPixelGeometry);
66    SkAutoGlyphCacheNoGamma autoCache(paint, &surfaceProps, &SkMatrix::I());
67    while (*text != '\0') {
68        size_t nextIndex = 0;
69        int32_t unichar = utf32_from_utf8_at(text, 4, 0, &nextIndex);
70        text += nextIndex;
71
72        glyph_t glyph = autoCache.getCache()->unicharToGlyph(unichar);
73        autoCache.getCache()->unicharToGlyph(unichar);
74
75        // push glyph and its relative position
76        outGlyphs->push_back(glyph);
77        outPositions->push_back(totalAdvance);
78        outPositions->push_back(0);
79
80        // compute bounds
81        SkGlyph skGlyph = autoCache.getCache()->getUnicharMetrics(unichar);
82        Rect glyphBounds(skGlyph.fWidth, skGlyph.fHeight);
83        glyphBounds.translate(totalAdvance + skGlyph.fLeft, skGlyph.fTop);
84        bounds.unionWith(glyphBounds);
85
86        // advance next character
87        SkScalar skWidth;
88        paint.getTextWidths(&glyph, sizeof(glyph), &skWidth, NULL);
89        totalAdvance += skWidth;
90    }
91    *outBounds = bounds;
92    *outTotalAdvance = totalAdvance;
93}
94
95
96void TestUtils::drawUtf8ToCanvas(Canvas* canvas, const char* text,
97        const SkPaint& paint, float x, float y) {
98    auto utf16 = asciiToUtf16(text);
99    canvas->drawText(utf16.get(), 0, strlen(text), strlen(text), x, y, 0, paint, nullptr);
100}
101
102void TestUtils::drawUtf8ToCanvas(Canvas* canvas, const char* text,
103        const SkPaint& paint, const SkPath& path) {
104    auto utf16 = asciiToUtf16(text);
105    canvas->drawTextOnPath(utf16.get(), strlen(text), 0, path, 0, 0, paint, nullptr);
106}
107
108void TestUtils::TestTask::run() {
109    // RenderState only valid once RenderThread is running, so queried here
110    renderthread::RenderThread& renderThread = renderthread::RenderThread::getInstance();
111    renderThread.eglManager().initialize();
112
113    rtCallback(renderThread);
114
115    renderThread.renderState().flush(Caches::FlushMode::Full);
116    renderThread.eglManager().destroy();
117}
118
119std::unique_ptr<uint16_t[]> TestUtils::asciiToUtf16(const char* str) {
120    const int length = strlen(str);
121    std::unique_ptr<uint16_t[]> utf16(new uint16_t[length]);
122    for (int i = 0; i < length; i++) {
123        utf16.get()[i] = str[i];
124    }
125    return utf16;
126}
127
128SkColor TestUtils::getColor(const sk_sp<SkSurface>& surface, int x, int y) {
129    SkPixmap pixmap;
130    if (!surface->peekPixels(&pixmap)) {
131        return 0;
132    }
133    switch (pixmap.colorType()) {
134        case kGray_8_SkColorType: {
135            const uint8_t* addr = pixmap.addr8(x, y);
136            return SkColorSetRGB(*addr, *addr, *addr);
137        }
138        case kAlpha_8_SkColorType: {
139            const uint8_t* addr = pixmap.addr8(x, y);
140            return SkColorSetA(0, addr[0]);
141        }
142        case kRGB_565_SkColorType: {
143            const uint16_t* addr = pixmap.addr16(x, y);
144            return SkPixel16ToColor(addr[0]);
145        }
146        case kARGB_4444_SkColorType: {
147            const uint16_t* addr = pixmap.addr16(x, y);
148            SkPMColor c = SkPixel4444ToPixel32(addr[0]);
149            return SkUnPreMultiply::PMColorToColor(c);
150        }
151        case kBGRA_8888_SkColorType: {
152            const uint32_t* addr = pixmap.addr32(x, y);
153            SkPMColor c = SkSwizzle_BGRA_to_PMColor(addr[0]);
154            return SkUnPreMultiply::PMColorToColor(c);
155        }
156        case kRGBA_8888_SkColorType: {
157            const uint32_t* addr = pixmap.addr32(x, y);
158            SkPMColor c = SkSwizzle_RGBA_to_PMColor(addr[0]);
159            return SkUnPreMultiply::PMColorToColor(c);
160        }
161        default:
162            return 0;
163    }
164    return 0;
165}
166
167} /* namespace uirenderer */
168} /* namespace android */
169