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Add shaded text sample and gm test.

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git-svn-id: http://skia.googlecode.com/svn/trunk@725 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
bsalomon@google.com 2011-01-25 18:35:26 +00:00
parent 664a843e8b
commit 0fdaa22dea
4 changed files with 406 additions and 0 deletions
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1
gm/gm_files.mk
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@ -5,4 +5,5 @@ SOURCE := \
shapes.cpp \
tilemodes.cpp \
xfermodes.cpp \
shadertext.cpp \
gmmain.cpp

198
gm/shadertext.cpp Normal file
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@ -0,0 +1,198 @@
#include "gm.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkUnitMappers.h"
namespace skiagm {
static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) {
bm->setConfig(config, w, h);
bm->allocPixels();
bm->eraseColor(0);
SkCanvas canvas(*bm);
SkScalar s = w < h ? w : h;
SkPoint pts[] = { 0, 0, s, s };
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
SkPaint paint;
SkUnitMapper* um = NULL;
um = new SkCosineMapper;
SkAutoUnref au(um);
paint.setDither(true);
paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos,
SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref();
canvas.drawPaint(paint);
}
SkShader* MakeBitmapShader(SkShader::TileMode tx, SkShader::TileMode ty,
int w, int h) {
static SkBitmap bmp;
if (bmp.isNull()) {
makebm(&bmp, SkBitmap::kARGB_8888_Config, w/2, h/4);
}
return SkShader::CreateBitmapShader(bmp, tx, ty);
}
///////////////////////////////////////////////////////////////////////////////
struct GradData {
int fCount;
const SkColor* fColors;
const SkScalar* fPos;
};
static const SkColor gColors[] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
};
static const GradData gGradData[] = {
{ 2, gColors, NULL },
{ 5, gColors, NULL },
};
static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos,
data.fCount, tm, mapper);
}
static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateRadial(center, center.fX, data.fColors,
data.fPos, data.fCount, tm, mapper);
}
static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors,
data.fPos, data.fCount, mapper);
}
static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center0, center1;
center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
return SkGradientShader::CreateTwoPointRadial(
center1, (pts[1].fX - pts[0].fX) / 7,
center0, (pts[1].fX - pts[0].fX) / 2,
data.fColors, data.fPos, data.fCount, tm, mapper);
}
typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper);
static const GradMaker gGradMakers[] = {
MakeLinear, MakeRadial, MakeSweep, Make2Radial
};
///////////////////////////////////////////////////////////////////////////////
class ShaderTextGM : public GM {
public:
ShaderTextGM() {}
protected:
SkString onShortName() {
return SkString("shadertext");
}
SkISize onISize() { return make_isize(950, 500); }
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
const char text[] = "Shaded Text";
const int textLen = SK_ARRAY_COUNT(text) - 1;
static int pointSize = SkIntToScalar(48);
int w = pointSize * textLen;
int h = pointSize;
SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(w), SkIntToScalar(h) }
};
SkScalar textBase = SkIntToScalar(h/2);
SkShader::TileMode tileModes[] = {
SkShader::kClamp_TileMode,
SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode
};
static const int gradCount = SK_ARRAY_COUNT(gGradData) *
SK_ARRAY_COUNT(gGradMakers);
static const int bmpCount = SK_ARRAY_COUNT(tileModes) *
SK_ARRAY_COUNT(tileModes);
SkShader* shaders[gradCount + bmpCount];
int shdIdx = 0;
for (size_t d = 0; d < SK_ARRAY_COUNT(gGradData); ++d) {
for (size_t m = 0; m < SK_ARRAY_COUNT(gGradMakers); ++m) {
shaders[shdIdx++] = gGradMakers[m](pts,
gGradData[d],
SkShader::kClamp_TileMode,
NULL);
}
}
for (size_t tx = 0; tx < SK_ARRAY_COUNT(tileModes); ++tx) {
for (size_t ty = 0; ty < SK_ARRAY_COUNT(tileModes); ++ty) {
shaders[shdIdx++] = MakeBitmapShader(tileModes[tx],
tileModes[ty],
w/8, h);
}
}
SkPaint paint;
paint.setDither(true);
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(pointSize));
canvas->save();
canvas->translate(SkIntToScalar(20), SkIntToScalar(10));
static const int testsPerCol = 8;
static const int rowHeight = 60;
static const int colWidth = 300;
canvas->save();
for (size_t s = 0; s < SK_ARRAY_COUNT(shaders); s++) {
canvas->save();
canvas->translate(SkIntToScalar((s / testsPerCol) * colWidth),
SkIntToScalar((s % testsPerCol) * rowHeight));
paint.setShader(shaders[s])->ref();
canvas->drawText(text, textLen, 0, textBase, paint);
canvas->restore();
}
canvas->restore();
}
private:
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new ShaderTextGM; }
static GMRegistry reg(MyFactory);
}

199
samplecode/SampleShaderText.cpp Normal file
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@ -0,0 +1,199 @@
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkUnitMappers.h"
static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) {
bm->setConfig(config, w, h);
bm->allocPixels();
bm->eraseColor(0);
SkCanvas canvas(*bm);
SkScalar s = w < h ? w : h;
SkPoint pts[] = { 0, 0, s, s };
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
SkPaint paint;
SkUnitMapper* um = NULL;
um = new SkCosineMapper;
SkAutoUnref au(um);
paint.setDither(true);
paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos,
SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref();
canvas.drawPaint(paint);
}
SkShader* MakeBitmapShader(SkShader::TileMode tx, SkShader::TileMode ty,
int w, int h) {
static SkBitmap bmp;
if (bmp.isNull()) {
makebm(&bmp, SkBitmap::kARGB_8888_Config, w/2, h/4);
}
return SkShader::CreateBitmapShader(bmp, tx, ty);
}
///////////////////////////////////////////////////////////////////////////////
struct GradData {
int fCount;
const SkColor* fColors;
const SkScalar* fPos;
};
static const SkColor gColors[] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
};
static const GradData gGradData[] = {
{ 2, gColors, NULL },
{ 5, gColors, NULL },
};
static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos,
data.fCount, tm, mapper);
}
static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateRadial(center, center.fX, data.fColors,
data.fPos, data.fCount, tm, mapper);
}
static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors,
data.fPos, data.fCount, mapper);
}
static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper) {
SkPoint center0, center1;
center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
return SkGradientShader::CreateTwoPointRadial(
center1, (pts[1].fX - pts[0].fX) / 7,
center0, (pts[1].fX - pts[0].fX) / 2,
data.fColors, data.fPos, data.fCount, tm, mapper);
}
typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper);
static const GradMaker gGradMakers[] = {
MakeLinear, MakeRadial, MakeSweep, Make2Radial
};
///////////////////////////////////////////////////////////////////////////////
class ShaderTextView : public SkView {
public:
ShaderTextView() {}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Shader Text");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
const char text[] = "Shaded Text";
const int textLen = SK_ARRAY_COUNT(text) - 1;
static int pointSize = SkIntToScalar(48);
int w = pointSize * textLen;
int h = pointSize;
SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(w), SkIntToScalar(h) }
};
SkScalar textBase = SkIntToScalar(h/2);
SkShader::TileMode tileModes[] = {
SkShader::kClamp_TileMode,
SkShader::kRepeat_TileMode,
SkShader::kMirror_TileMode
};
static const int gradCount = SK_ARRAY_COUNT(gGradData) *
SK_ARRAY_COUNT(gGradMakers);
static const int bmpCount = SK_ARRAY_COUNT(tileModes) *
SK_ARRAY_COUNT(tileModes);
SkShader* shaders[gradCount + bmpCount];
int shdIdx = 0;
for (size_t d = 0; d < SK_ARRAY_COUNT(gGradData); ++d) {
for (size_t m = 0; m < SK_ARRAY_COUNT(gGradMakers); ++m) {
shaders[shdIdx++] = gGradMakers[m](pts,
gGradData[d],
SkShader::kClamp_TileMode,
NULL);
}
}
for (size_t tx = 0; tx < SK_ARRAY_COUNT(tileModes); ++tx) {
for (size_t ty = 0; ty < SK_ARRAY_COUNT(tileModes); ++ty) {
shaders[shdIdx++] = MakeBitmapShader(tileModes[tx],
tileModes[ty],
w/8, h);
}
}
SkPaint paint;
paint.setDither(true);
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(pointSize));
canvas->save();
canvas->translate(SkIntToScalar(20), SkIntToScalar(10));
static const int testsPerCol = 8;
static const int rowHeight = 60;
static const int colWidth = 300;
canvas->save();
for (size_t s = 0; s < SK_ARRAY_COUNT(shaders); s++) {
canvas->save();
canvas->translate(SkIntToScalar((s / testsPerCol) * colWidth),
SkIntToScalar((s % testsPerCol) * rowHeight));
paint.setShader(shaders[s])->ref();
canvas->drawText(text, textLen, 0, textBase, paint);
canvas->restore();
}
canvas->restore();
canvas->translate(0, SkIntToScalar(370));
this->inval(NULL);
}
private:
typedef SkView INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ShaderTextView; }
static SkViewRegister reg(MyFactory);

8
xcode/sampleapp/SampleApp.xcodeproj/project.pbxproj
View File

@ -148,6 +148,8 @@
8D0C4E8D0486CD37000505A6 /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = 0867D6AAFE840B52C02AAC07 /* InfoPlist.strings */; };
8D0C4E8E0486CD37000505A6 /* main.nib in Resources */ = {isa = PBXBuildFile; fileRef = 02345980000FD03B11CA0E72 /* main.nib */; };
8D0C4E920486CD37000505A6 /* Carbon.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 20286C33FDCF999611CA2CEA /* Carbon.framework */; };
D55BEE6712EF44B90055D6FD /* shadertext.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D55BEE6612EF44B90055D6FD /* shadertext.cpp */; };
D5962B3A12EDFC7600B478DF /* SampleShaderText.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D5962B3812EDFC7600B478DF /* SampleShaderText.cpp */; };
D5A682D712E9CE8500CDDDC6 /* SamplePatch.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0041CE340F00A12400695E8C /* SamplePatch.cpp */; };
D5F4A21F12E9D75300DE986A /* SampleFillType.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0041CE270F00A12400695E8C /* SampleFillType.cpp */; };
/* End PBXBuildFile section */
@ -412,6 +414,8 @@
4A9504CAFFE6A41611CA0CBA /* CoreServices.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CoreServices.framework; path = /System/Library/Frameworks/CoreServices.framework; sourceTree = "<absolute>"; };
8D0C4E960486CD37000505A6 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
8D0C4E970486CD37000505A6 /* CICarbonSample.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = CICarbonSample.app; sourceTree = BUILT_PRODUCTS_DIR; };
D55BEE6612EF44B90055D6FD /* shadertext.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = shadertext.cpp; path = ../../gm/shadertext.cpp; sourceTree = SOURCE_ROOT; };
D5962B3812EDFC7600B478DF /* SampleShaderText.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SampleShaderText.cpp; path = ../../samplecode/SampleShaderText.cpp; sourceTree = SOURCE_ROOT; };
/* End PBXFileReference section */
/* Begin PBXFrameworksBuildPhase section */
@ -460,6 +464,7 @@
007A7CA50F01658C00A2D6EE /* SamplePoints.cpp */,
007A7CA70F01658C00A2D6EE /* SampleRegion.cpp */,
007A7CA80F01658C00A2D6EE /* SampleShaders.cpp */,
D5962B3812EDFC7600B478DF /* SampleShaderText.cpp */,
007A7CA90F01658C00A2D6EE /* SampleStrokeText.cpp */,
007A7CAC0F01658C00A2D6EE /* SampleTextAlpha.cpp */,
007A7CAD0F01658C00A2D6EE /* SampleTextEffects.cpp */,
@ -679,6 +684,7 @@
27C4624512BFB2C700DBB1F6 /* bitmapfilters.cpp */,
27C4624612BFB2C700DBB1F6 /* filltypes.cpp */,
27C4624712BFB2C700DBB1F6 /* gradients.cpp */,
D55BEE6612EF44B90055D6FD /* shadertext.cpp */,
27C4624812BFB2C700DBB1F6 /* shapes.cpp */,
27C4624912BFB2C700DBB1F6 /* tilemodes.cpp */,
27C4624A12BFB2C700DBB1F6 /* xfermodes.cpp */,
@ -1022,6 +1028,8 @@
009F9D1A12C3EB2600C7FD4A /* SampleGM.cpp in Sources */,
D5A682D712E9CE8500CDDDC6 /* SamplePatch.cpp in Sources */,
D5F4A21F12E9D75300DE986A /* SampleFillType.cpp in Sources */,
D5962B3A12EDFC7600B478DF /* SampleShaderText.cpp in Sources */,
D55BEE6712EF44B90055D6FD /* shadertext.cpp in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};