2017-11-19 18:20:13 +00:00
|
|
|
/*
|
|
|
|
* Copyright 2017 Google Inc.
|
|
|
|
*
|
|
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
|
|
* found in the LICENSE file.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "gm.h"
|
|
|
|
|
|
|
|
#if SK_SUPPORT_ATLAS_TEXT
|
2018-06-19 17:09:54 +00:00
|
|
|
#include "GrContext.h"
|
2017-11-19 18:20:13 +00:00
|
|
|
|
|
|
|
#include "SkAtlasTextContext.h"
|
|
|
|
#include "SkAtlasTextFont.h"
|
|
|
|
#include "SkAtlasTextTarget.h"
|
|
|
|
#include "SkBitmap.h"
|
|
|
|
#include "SkCanvas.h"
|
2018-12-02 21:04:27 +00:00
|
|
|
#include "SkFont.h"
|
2017-11-19 18:20:13 +00:00
|
|
|
#include "SkTypeface.h"
|
2018-08-21 15:45:46 +00:00
|
|
|
#include "SkUTF.h"
|
2019-03-20 16:12:10 +00:00
|
|
|
#include "ToolUtils.h"
|
2017-11-19 18:20:13 +00:00
|
|
|
#include "gpu/TestContext.h"
|
|
|
|
#include "gpu/atlastext/GLTestAtlasTextRenderer.h"
|
|
|
|
#include "gpu/atlastext/TestAtlasTextRenderer.h"
|
|
|
|
|
|
|
|
// GM that draws text using the Atlas Text interface offscreen and then blits that to the canvas.
|
|
|
|
|
|
|
|
static SkScalar draw_string(SkAtlasTextTarget* target, const SkString& text, SkScalar x, SkScalar y,
|
|
|
|
uint32_t color, sk_sp<SkTypeface> typeface, float size) {
|
2017-11-20 18:17:43 +00:00
|
|
|
if (!text.size()) {
|
|
|
|
return x;
|
|
|
|
}
|
2018-12-02 21:04:27 +00:00
|
|
|
auto atlas_font = SkAtlasTextFont::Make(typeface, size);
|
2018-07-25 20:52:48 +00:00
|
|
|
int cnt = SkUTF::CountUTF8(text.c_str(), text.size());
|
2017-11-20 18:13:01 +00:00
|
|
|
std::unique_ptr<SkGlyphID[]> glyphs(new SkGlyphID[cnt]);
|
|
|
|
typeface->charsToGlyphs(text.c_str(), SkTypeface::Encoding::kUTF8_Encoding, glyphs.get(), cnt);
|
|
|
|
|
2017-11-20 18:17:43 +00:00
|
|
|
// Using a paint to get the positions for each glyph.
|
2018-12-02 21:04:27 +00:00
|
|
|
SkFont font;
|
|
|
|
font.setSize(size);
|
|
|
|
font.setTypeface(std::move(typeface));
|
2017-11-20 18:17:43 +00:00
|
|
|
std::unique_ptr<SkScalar[]> widths(new SkScalar[cnt]);
|
2018-12-02 21:04:27 +00:00
|
|
|
font.getWidths(glyphs.get(), cnt, widths.get());
|
2017-11-20 18:17:43 +00:00
|
|
|
|
|
|
|
std::unique_ptr<SkPoint[]> positions(new SkPoint[cnt]);
|
|
|
|
positions[0] = {x, y};
|
|
|
|
for (int i = 1; i < cnt; ++i) {
|
|
|
|
positions[i] = {positions[i - 1].fX + widths[i - 1], y};
|
|
|
|
}
|
|
|
|
|
2018-12-02 21:04:27 +00:00
|
|
|
target->drawText(glyphs.get(), positions.get(), cnt, color, *atlas_font);
|
2017-11-20 18:17:43 +00:00
|
|
|
|
2017-12-13 15:59:33 +00:00
|
|
|
// Return the width of the of draw.
|
|
|
|
return positions[cnt - 1].fX + widths[cnt - 1] - positions[0].fX;
|
2017-11-19 18:20:13 +00:00
|
|
|
}
|
|
|
|
|
2019-04-02 14:01:11 +00:00
|
|
|
class AtlasTextGM : public skiagm::GpuGM {
|
2017-11-19 18:20:13 +00:00
|
|
|
public:
|
|
|
|
AtlasTextGM() = default;
|
|
|
|
|
|
|
|
protected:
|
|
|
|
SkString onShortName() override { return SkString("atlastext"); }
|
|
|
|
|
|
|
|
SkISize onISize() override { return SkISize::Make(kSize, kSize); }
|
|
|
|
|
|
|
|
void onOnceBeforeDraw() override {
|
|
|
|
fRenderer = sk_gpu_test::MakeGLTestAtlasTextRenderer();
|
|
|
|
if (!fRenderer) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
fContext = SkAtlasTextContext::Make(fRenderer);
|
|
|
|
auto targetHandle = fRenderer->makeTargetHandle(kSize, kSize);
|
2018-02-08 15:59:38 +00:00
|
|
|
if (!targetHandle) {
|
|
|
|
return;
|
|
|
|
}
|
2018-06-19 17:09:54 +00:00
|
|
|
|
2017-11-19 18:20:13 +00:00
|
|
|
fTarget = SkAtlasTextTarget::Make(fContext, kSize, kSize, targetHandle);
|
|
|
|
|
2019-03-20 16:12:10 +00:00
|
|
|
fTypefaces[0] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Italic());
|
|
|
|
fTypefaces[1] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Italic());
|
|
|
|
fTypefaces[2] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Normal());
|
|
|
|
fTypefaces[3] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Normal());
|
|
|
|
fTypefaces[4] = ToolUtils::create_portable_typeface("serif", SkFontStyle::Bold());
|
|
|
|
fTypefaces[5] = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Bold());
|
2017-11-19 18:20:13 +00:00
|
|
|
}
|
|
|
|
|
2019-04-02 14:01:11 +00:00
|
|
|
DrawResult onDraw(GrContext*,
|
|
|
|
GrRenderTargetContext*,
|
|
|
|
SkCanvas* canvas,
|
|
|
|
SkString* errorMsg) override {
|
|
|
|
if (!fRenderer) {
|
|
|
|
*errorMsg = "No renderer... probably not supported.";
|
|
|
|
return DrawResult::kSkip;
|
|
|
|
}
|
|
|
|
if (!fTarget || !fTarget->handle()) {
|
|
|
|
*errorMsg = "No target... we can't continue.";
|
2019-02-07 23:20:09 +00:00
|
|
|
return DrawResult::kFail;
|
2017-11-19 18:20:13 +00:00
|
|
|
}
|
2017-11-20 16:01:54 +00:00
|
|
|
fRenderer->clearTarget(fTarget->handle(), 0xFF808080);
|
2017-11-19 18:20:13 +00:00
|
|
|
auto bmp = this->drawText();
|
|
|
|
SkPaint paint;
|
|
|
|
paint.setBlendMode(SkBlendMode::kSrc);
|
|
|
|
canvas->drawBitmap(bmp, 0, 0);
|
2019-02-07 23:20:09 +00:00
|
|
|
return DrawResult::kOk;
|
2017-11-19 18:20:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
SkBitmap drawText() {
|
|
|
|
static const int kSizes[] = {8, 13, 18, 23, 30};
|
|
|
|
|
|
|
|
static const SkString kTexts[] = {SkString("ABCDEFGHIJKLMNOPQRSTUVWXYZ"),
|
|
|
|
SkString("abcdefghijklmnopqrstuvwxyz"),
|
|
|
|
SkString("0123456789"),
|
|
|
|
SkString("!@#$%^&*()<>[]{}")};
|
|
|
|
SkScalar x = 0;
|
|
|
|
SkScalar y = 10;
|
|
|
|
|
|
|
|
SkRandom random;
|
|
|
|
do {
|
|
|
|
for (auto s : kSizes) {
|
|
|
|
auto size = 2 * s;
|
|
|
|
for (const auto& typeface : fTypefaces) {
|
|
|
|
for (const auto& text : kTexts) {
|
2017-12-13 15:59:33 +00:00
|
|
|
// Choose a random color but don't let alpha be too small to see.
|
|
|
|
uint32_t color = random.nextU() | 0x40000000;
|
|
|
|
fTarget->save();
|
|
|
|
// Randomly add a little bit of perspective
|
|
|
|
if (random.nextBool()) {
|
|
|
|
SkMatrix persp;
|
|
|
|
persp.reset();
|
|
|
|
persp.setPerspY(0.0005f);
|
|
|
|
persp.preTranslate(-x, -y + s);
|
|
|
|
persp.postTranslate(x, y - s);
|
|
|
|
fTarget->concat(persp);
|
|
|
|
}
|
|
|
|
// Randomly switch between positioning with a matrix vs x, y passed to draw.
|
|
|
|
SkScalar drawX = x, drawY = y;
|
|
|
|
if (random.nextBool()) {
|
|
|
|
fTarget->translate(x, y);
|
|
|
|
drawX = drawY = 0;
|
|
|
|
}
|
|
|
|
x += size +
|
|
|
|
draw_string(fTarget.get(), text, drawX, drawY, color, typeface, size);
|
2017-11-19 18:20:13 +00:00
|
|
|
x = SkScalarCeilToScalar(x);
|
2017-12-13 15:59:33 +00:00
|
|
|
fTarget->restore();
|
|
|
|
// Flush periodically to test continued drawing after a flush.
|
|
|
|
if ((random.nextU() % 8) == 0) {
|
2017-11-29 19:58:59 +00:00
|
|
|
fTarget->flush();
|
|
|
|
}
|
2017-11-19 18:20:13 +00:00
|
|
|
if (x + 100 > kSize) {
|
|
|
|
x = 0;
|
|
|
|
y += SkScalarCeilToScalar(size + 3);
|
|
|
|
if (y > kSize) {
|
|
|
|
fTarget->flush();
|
|
|
|
return fRenderer->readTargetHandle(fTarget->handle());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} while (true);
|
|
|
|
}
|
|
|
|
|
|
|
|
static constexpr int kSize = 1280;
|
|
|
|
|
|
|
|
sk_sp<SkTypeface> fTypefaces[6];
|
|
|
|
sk_sp<sk_gpu_test::TestAtlasTextRenderer> fRenderer;
|
|
|
|
std::unique_ptr<SkAtlasTextTarget> fTarget;
|
|
|
|
sk_sp<SkAtlasTextContext> fContext;
|
|
|
|
|
|
|
|
typedef GM INHERITED;
|
|
|
|
};
|
|
|
|
|
|
|
|
constexpr int AtlasTextGM::kSize;
|
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
|
|
DEF_GM(return new AtlasTextGM;)
|
|
|
|
|
|
|
|
#endif
|