diff options
Diffstat (limited to 'samplecode/SampleText.cpp')
| -rw-r--r-- | samplecode/SampleText.cpp | 791 |
1 files changed, 0 insertions, 791 deletions
diff --git a/samplecode/SampleText.cpp b/samplecode/SampleText.cpp deleted file mode 100644 index 60e015a..0000000 --- a/samplecode/SampleText.cpp +++ /dev/null @@ -1,791 +0,0 @@ -#include "SampleCode.h" -#include "SkView.h" -#include "SkCanvas.h" -#include "Sk64.h" -#include "SkGradientShader.h" -#include "SkGraphics.h" -#include "SkImageDecoder.h" -#include "SkKernel33MaskFilter.h" -#include "SkPath.h" -#include "SkRandom.h" -#include "SkRegion.h" -#include "SkShader.h" -#include "SkUtils.h" -#include "SkColorPriv.h" -#include "SkColorFilter.h" -#include "SkTime.h" -#include "SkTypeface.h" -#include "SkXfermode.h" - -#include "SkStream.h" -#include "SkXMLParser.h" - -static const int gKernel[3][3] = { -// { -1, -2, -1 }, { -2, 12, -2 }, { -1, -2, -1 } - { 1, 2, 1 }, { 2, 64-12, 2 }, { 1, 2, 1 } -}; -static const int gShift = 6; - -class ReduceNoise : public SkKernel33ProcMaskFilter { -public: - ReduceNoise(int percent256) : SkKernel33ProcMaskFilter(percent256) {} - virtual uint8_t computeValue(uint8_t* const* srcRows) - { - int c = srcRows[1][1]; - int min = 255, max = 0; - for (int i = 0; i < 3; i++) - for (int j = 0; j < 3; j++) - if (i != 1 || j != 1) - { - int v = srcRows[i][j]; - if (max < v) - max = v; - if (min > v) - min = v; - } - if (c > max) c = max; - // if (c < min) c = min; - return c; - } - virtual Factory getFactory() { return Create; } -private: - ReduceNoise(SkFlattenableReadBuffer& rb) : SkKernel33ProcMaskFilter(rb) {} - static SkFlattenable* Create(SkFlattenableReadBuffer& rb) - { - return new ReduceNoise(rb); - } -}; - -class Darken : public SkKernel33ProcMaskFilter { -public: - Darken(int percent256) : SkKernel33ProcMaskFilter(percent256) {} - virtual uint8_t computeValue(uint8_t* const* srcRows) - { - int c = srcRows[1][1]; - float f = c / 255.f; - - if (c >= 0) - { - f = sqrtf(f); - } - else - { - f *= f; - } - SkASSERT(f >= 0 && f <= 1); - return (int)(f * 255); - } - virtual Factory getFactory() { return Create; } -private: - Darken(SkFlattenableReadBuffer& rb) : SkKernel33ProcMaskFilter(rb) {} - static SkFlattenable* Create(SkFlattenableReadBuffer& rb) - { - return new Darken(rb); - } -}; - -static SkMaskFilter* makemf() { return new Darken(0x30); } - -//#ifdef TEST_CLICKX - -static void test_typefaceCache() -{ - SkTypeface* t0 = SkTypeface::Create("sans-serif", SkTypeface::kNormal); - SkTypeface* t1 = SkTypeface::Create(NULL, SkTypeface::kNormal); - SkTypeface* t2 = SkTypeface::Create("arial", SkTypeface::kNormal); - SkTypeface* t3 = SkTypeface::Create("helvetica", SkTypeface::kItalic); - -#ifndef SK_BUILD_FOR_MAC - SkASSERT(t0 == t1); - SkASSERT(t0 == t2); - SkASSERT(t0 == t3); -#endif -} - -static void test_breakText() -{ - SkPaint paint; - const char* text = "sdfkljAKLDFJKEWkldfjlk#$%&sdfs.dsj"; - size_t length = strlen(text); - SkScalar width = paint.measureText(text, length); - - SkScalar mm = 0; - SkScalar nn = 0; - for (SkScalar w = 0; w <= width; w += SK_Scalar1) - { - SkScalar m; - size_t n = paint.breakText(text, length, w, &m, - SkPaint::kBackward_TextBufferDirection); - - SkASSERT(n <= length); - SkASSERT(m <= width); - - if (n == 0) - SkASSERT(m == 0); - else - { - // now assert that we're monotonic - if (n == nn) - SkASSERT(m == mm); - else - { - SkASSERT(n > nn); - SkASSERT(m > mm); - } - } - nn = n; - mm = m; - } - - nn = paint.breakText(text, length, width, &mm); - SkASSERT(nn == length); - SkASSERT(mm == width); -} - -static SkRandom gRand; - -class SkPowerMode : public SkXfermode { -public: - SkPowerMode(SkScalar exponent) { this->init(exponent); } - - virtual void xfer16(uint16_t dst[], const SkPMColor src[], int count, const SkAlpha aa[]); - - typedef SkFlattenable* (*Factory)(SkFlattenableReadBuffer&); - - // overrides for SkFlattenable - virtual Factory getFactory() { return Create; } - virtual void flatten(SkFlattenableWriteBuffer& b) - { - // this->INHERITED::flatten(b); How can we know if this is legal???? - b.write32(SkScalarToFixed(fExp)); - } - -private: - SkScalar fExp; // user's value - uint8_t fTable[256]; // cache - - void init(SkScalar exponent); - SkPowerMode(SkFlattenableReadBuffer& b) : SkXfermode(b) - { - // read the exponent - this->init(SkFixedToScalar(b.readS32())); - } - static SkFlattenable* Create(SkFlattenableReadBuffer& b) - { - return SkNEW_ARGS(SkPowerMode, (b)); - } - - typedef SkXfermode INHERITED; -}; - -void SkPowerMode::init(SkScalar e) -{ - fExp = e; - float ee = SkScalarToFloat(e); - - printf("------ %g\n", ee); - for (int i = 0; i < 256; i++) - { - float x = i / 255.f; - // printf(" %d %g", i, x); - x = powf(x, ee); - // printf(" %g", x); - int xx = SkScalarRound(SkFloatToScalar(x * 255)); - // printf(" %d\n", xx); - fTable[i] = SkToU8(xx); - } -} - -void SkPowerMode::xfer16(uint16_t dst[], const SkPMColor src[], int count, const SkAlpha aa[]) -{ - for (int i = 0; i < count; i++) - { - SkPMColor c = src[i]; - int r = SkGetPackedR32(c); - int g = SkGetPackedG32(c); - int b = SkGetPackedB32(c); - r = fTable[r]; - g = fTable[g]; - b = fTable[b]; - dst[i] = SkPack888ToRGB16(r, g, b); - } -} - -static const struct { - const char* fName; - uint32_t fFlags; - bool fFlushCache; -} gHints[] = { - { "Linear", SkPaint::kLinearText_Flag, false }, - { "Normal", 0, true }, - { "Subpixel", SkPaint::kSubpixelText_Flag, true } -}; - -#ifdef SK_DEBUG - #define REPEAT_COUNT 1 -#else - #define REPEAT_COUNT 5000 -#endif - -static int count_char_points(const SkPaint& paint, char c) -{ - SkPath path; - - paint.getTextPath(&c, 1, 0, 0, &path); - return path.getPoints(NULL, 0); -} - -static int gOld, gNew, gCount; - -static void dump(int c, int oldc, int newc) -{ - if (oldc != newc) - { - gOld += oldc; - gNew += newc; - gCount += 1; - printf("char %c: old = %3d, new = %3d, reduction %g%%\n", c, oldc, newc, 100. * (oldc - newc) / oldc); - } -} - -static void tab(int n) -{ -// printf("[%d] ", n); return; - SkASSERT(n >= 0); - for (int i = 0; i < n; i++) - printf(" "); -} - -#if 0 -#include "badrects.cpp" - -static void make_badrgn(SkRegion* rgn, int insetAmount) -{ - SkRect16 r, bounds; - int i; - - rgn->setEmpty(); - bounds.setEmpty(); - - for (i = 0; i < SK_ARRAY_COUNT(badrects); i++) - { - SkASSERT(badrects[i].width > 0 && badrects[i].height > 0); - - r.set(badrects[i].x, badrects[i].y, badrects[i].x + badrects[i].width, badrects[i].y + badrects[i].height); - r.inset(insetAmount, insetAmount); - rgn->op(r, SkRegion::kUnion_Op); - bounds.join(r); - } - SkASSERT(bounds == rgn->getBounds()); - - for (i = 0; i < SK_ARRAY_COUNT(badrects); i++) - { - r.set(badrects[i].x, badrects[i].y, badrects[i].x + badrects[i].width, badrects[i].y + badrects[i].height); - SkASSERT(rgn->contains(r)); - } -} -#endif - -static void draw_rgn(const SkRegion& rgn, SkCanvas* canvas, const SkPaint& paint) -{ - SkRect r; - SkRegion::Iterator iter(rgn); - - for (; !iter.done(); iter.next()) - { - r.set(iter.rect()); - canvas->drawRect(r, paint); - } -} - -static void test_break(SkCanvas* canvas, const char text[], size_t length, - SkScalar x, SkScalar y, const SkPaint& paint, - SkScalar clickX) -{ - SkPaint linePaint; - - linePaint.setAntiAlias(true); - - SkScalar measured; - - if (paint.breakText(text, length, clickX - x, &measured, SkPaint::kForward_TextBufferDirection)) - { - linePaint.setColor(SK_ColorRED); - canvas->drawLine(x, y, x + measured, y, linePaint); - } - - x += paint.measureText(text, length); - if (paint.breakText(text, length, x - clickX, &measured, SkPaint::kBackward_TextBufferDirection)) - { - linePaint.setColor(SK_ColorBLUE); - canvas->drawLine(x - measured, y, x, y, linePaint); - } -} - -static void test_poly() -{ - static const SkPoint dst[] = { - SkIntToScalar(2), SkIntToScalar(1), - SkIntToScalar(5), SkIntToScalar(1), - SkIntToScalar(5), SkIntToScalar(3), - SkIntToScalar(2), SkIntToScalar(3) - }; - - static const SkPoint src[] = { - SkIntToScalar(0), SkIntToScalar(0), - SkIntToScalar(1), SkIntToScalar(0), - SkIntToScalar(1), SkIntToScalar(1), - SkIntToScalar(0), SkIntToScalar(1) - }; - - SkMatrix matrix; - - if (matrix.setPolyToPoly(src, dst, 4)) - { - SkPoint pt = { SK_Scalar1/2, SK_Scalar1/2 }; - matrix.mapPoints(&pt, 1); - printf("---- x = %g y = %g\n", SkScalarToFloat(pt.fX), SkScalarToFloat(pt.fY)); - } - else - printf("---- setPolyToPoly failed\n"); -} - -#include "SkColorShader.h" - -static void DrawTheText(SkCanvas* canvas, const char text[], size_t length, - SkScalar x, SkScalar y, const SkPaint& paint, - SkScalar clickX, SkMaskFilter* mf) -{ - SkPaint p(paint); - -#if 0 - canvas->drawText(text, length, x, y, paint); -#else - { - SkPoint pts[1000]; - SkScalar xpos = x; - SkASSERT(length <= SK_ARRAY_COUNT(pts)); - for (size_t i = 0; i < length; i++) - pts[i].set(xpos, y), xpos += paint.getTextSize(); - canvas->drawPosText(text, length, pts, paint); - } -#endif - - p.setSubpixelText(true); - x += SkIntToScalar(180); - canvas->drawText(text, length, x, y, p); - -#ifdef TEST_CLICKX - test_break(canvas, text, length, x, y, p, clickX); -#endif - -#ifdef SK_DEBUG - if (false) - { - SkColorShader shader; - p.setShader(&shader); - x += SkIntToScalar(180); - canvas->drawText(text, length, x, y, p); - p.setShader(NULL); - } - - if (true) - { - // p.setMaskFilter(mf); - p.setSubpixelText(false); - p.setLinearText(true); - x += SkIntToScalar(180); - canvas->drawText(text, length, x, y, p); - } -#endif -} - -class TextSpeedView : public SkView { -public: - TextSpeedView() - { - fMF = makemf(); - - fHints = 0; - - if (false) - { - static const char extra[] = { '.', ',', ':', ';', '!' }; - SkPaint paint, paint2; - - paint2.setTypeface(SkTypeface::Create(NULL, SkTypeface::kItalic))->unref(); - - for (int i = 0; i < 26; i++) - ::dump('a' + i, count_char_points(paint, 'a' + i), count_char_points(paint2, 'a' + i)); - for (int j = 0; j < SK_ARRAY_COUNT(extra); j++) - ::dump(extra[j], count_char_points(paint, extra[j]), count_char_points(paint2, extra[j])); - - printf("--- ave reduction = %g%%\n", 100. * (gOld - gNew) / gOld); - } - - if (true) - { - SkPoint pts[] = { SkIntToScalar(20), 0, SkIntToScalar(256+20), 0 }; - SkColor colors[] = { SkColorSetARGB(0, 255, 255, 255), SkColorSetARGB(255, 255, 255, 255) }; - fGradient = SkGradientShader::CreateLinear(pts, colors, NULL, 2, SkShader::kClamp_TileMode); - } - - fClickX = 0; - - test_breakText(); - test_typefaceCache(); - test_poly(); - } - - virtual ~TextSpeedView() - { - fGradient->unref(); - fMF->safeUnref(); - } - -protected: - // overrides from SkEventSink - virtual bool onQuery(SkEvent* evt) - { - if (SampleCode::TitleQ(*evt)) - { - SampleCode::TitleR(evt, "Text"); - return true; - } - return this->INHERITED::onQuery(evt); - } - - void drawBG(SkCanvas* canvas) - { -// canvas->drawColor(0xFFDDDDDD); - canvas->drawColor(SK_ColorWHITE); - // canvas->drawColor(SK_ColorBLACK); - } - - static void make_textstrip(SkBitmap* bm) - { - bm->setConfig(SkBitmap::kRGB_565_Config, 200, 18); - bm->allocPixels(); - bm->eraseColor(SK_ColorWHITE); - - SkCanvas canvas(*bm); - SkPaint paint; - const char* s = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit"; - - paint.setFlags(paint.getFlags() | SkPaint::kAntiAlias_Flag - | SkPaint::kDevKernText_Flag); - paint.setTextSize(SkIntToScalar(14)); - canvas.drawText(s, strlen(s), SkIntToScalar(8), SkIntToScalar(14), paint); - } - - static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) - { - for (size_t i = 0; i < n; i++) - pts[i].set(rand->nextUScalar1() * 640, rand->nextUScalar1() * 480); - } - - virtual void onDraw(SkCanvas* canvas) - { - if (false) - { - canvas->translate(SkIntToScalar(480), 0); - canvas->rotate(SkIntToScalar(90)); - } - - this->drawBG(canvas); - - if (false) - { - SkPaint p; - - p.setAntiAlias(true); - p.setSubpixelText(true); - // p.setLinearText(true); - - SkScalar size = SkIntToScalar(6); - SkMSec dur = 0; - const int LOOP = 16; - const int TIMES = 10; - - for (int times = 0; times < TIMES; times++) - { - SkMSec now = SkTime::GetMSecs(); - for (int loop = 0; loop < LOOP; loop++) - { - p.setTextSize(size); - size += SK_Scalar1/5; - canvas->drawText("Hamburgefons", 12, SkIntToScalar(10), SkIntToScalar(50), p); - } - dur += SkTime::GetMSecs() - now; - SkGraphics::SetFontCacheUsed(0); - } - - printf("----- duration = %g\n", dur * 1.0 / TIMES); - this->inval(NULL); - return; - } - - if (false) - { - SkPaint p; - p.setAntiAlias(true); - for (int i = 6; i <= 36; i++) - { - SkRect r; - SkPaint::FontMetrics m; - p.setTextSize(SkIntToScalar(i)); - p.getFontMetrics(&m); - int ascent = SkScalarRound(m.fAscent); - int descent = SkScalarRound(m.fDescent); - for (uint8_t c = ' '; c <= 127; c++) - { - p.getTextWidths(&c, 1, NULL, &r); - if (SkScalarRound(r.fTop) < ascent) - printf("PS %d --- %c [%d] top=%g, ascent=%g ymax=%g\n", i, c, c, - SkScalarToFloat(r.fTop), SkScalarToFloat(m.fAscent), SkScalarToFloat(m.fTop)); - if (SkScalarRound(r.fBottom) > descent) - printf("PS %d --- %c [%d] bottom=%g, descent=%g ymin=%g\n", i, c, c, - SkScalarToFloat(r.fBottom), SkScalarToFloat(m.fDescent), SkScalarToFloat(m.fBottom)); - } - } - } - - if (false) - { - SkPaint p; - p.setShader(fGradient); - -#ifdef SK_RELEASE - SkMSec now = SkTime::GetMSecs(); - for (int i = 0; i < 100; i++) -#endif - canvas->drawPaint(p); -#ifdef SK_RELEASE - printf("----- %d ms\n", SkTime::GetMSecs() - now); - this->inval(NULL); -#endif - return; - } - - if (false) - { - SkBitmap bm; - - make_textstrip(&bm); - canvas->translate(0, SkIntToScalar(50)); - for (int i = 0; i < 10; i++) - { - float gamma = 1 + i * 0.2f; - SkPowerMode mode(SkFloatToScalar(1 / gamma)); - SkPaint p; - p.setXfermode(&mode); - - canvas->drawBitmap(bm, 0, SkIntToScalar(i) * bm.height(), &p); - } - return; - } - - if (false) - { - SkPaint paint; - - paint.setAntiAlias(true); - paint.setDevKernText(true); - SkMSec now = SkTime::GetMSecs(); - for (int i = 0; i < 1000000; i++) - { - paint.measureText("Hamburgefons", 15, NULL, NULL); - } - printf("--------- measure %d\n", SkTime::GetMSecs() - now); - this->inval(NULL); - return; - } - - if (false) - { - SkRegion rgn; - SkPath path; - SkPaint paint; - - // make_badrgn(&rgn, -2); - - if (false) - { - paint.setColor(SK_ColorBLUE); - canvas->drawIRect(rgn.getBounds(), paint); - } - paint.setColor(SK_ColorRED); - draw_rgn(rgn, canvas, paint); - - rgn.getBoundaryPath(&path); - paint.setARGB(0x80, 0, 0, 0xFF); - canvas->drawPath(path, paint); - return; - } - - if (false) - { - SkRect r = { SkIntToScalar(50), SkIntToScalar(50), SkIntToScalar(300), SkIntToScalar(300) }; - SkPaint p; - - p.setStyle(SkPaint::kStroke_Style); - p.setAlpha(0x80); - p.setStrokeWidth(SkIntToScalar(20)); - canvas->drawRect(r, p); - } - - if (false) - { - SkPaint p; - SkRect r = { SkIntToScalar(100), SkIntToScalar(100), SkIntToScalar(104), SkIntToScalar(104) }; - // r.offset(SK_ScalarHalf, SK_ScalarHalf); - p.setStyle(SkPaint::kStroke_Style); - p.setStrokeWidth(SK_Scalar1*2); - // p.setAntiAliasOn(true); - canvas->drawRect(r, p); - return; - } - - if (false) - { - Sk64 aa, bb; - int64_t a = (int64_t)6062080 * -30596; - int64_t b = (int64_t)4816896 * 57957; - aa.setMul(6062080, -30596); - bb.setMul(4816896, 57957); - - a += b; - b = a >> 16; - -// SkFixed c = aa.addGetFixed(bb); - - printf("%d %d\n", (int)a, a >> 32); - - SkBitmap bm; - SkPaint paint; - SkScalar scale = SkFloatToScalar(0.5625f); - SkScalar x = SkIntToScalar(100); - SkScalar y = SkIntToScalar(100); - - //paint.setFilterType(SkPaint::kBilinear_FilterType); - - SkImageDecoder::DecodeFile("/app_web_browser.png", &bm); - - // canvas->drawBitmap(bm, x, y, paint); - x += SkIntToScalar(100); - canvas->save(); - canvas->translate(x, y); - canvas->scale(SkIntToScalar(2)/1, SkIntToScalar(2)/1); - canvas->translate(-x, -y); - canvas->drawBitmap(bm, x, y, &paint); - canvas->restore(); - x += SkIntToScalar(100); - canvas->save(); - canvas->translate(x, y); - canvas->scale(scale, scale); - canvas->translate(-x, -y); - // canvas->drawBitmap(bm, x, y, paint); - canvas->restore(); - return; - } - - SkAutoCanvasRestore restore(canvas, false); - { - SkRect r; - r.set(0, 0, SkIntToScalar(1000), SkIntToScalar(20)); - // canvas->saveLayer(&r, NULL, SkCanvas::kHasAlphaLayer_SaveFlag); - } - - SkPaint paint; -// const uint16_t glyphs[] = { 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 }; - int index = fHints % SK_ARRAY_COUNT(gHints); - index = 1; -// const char* style = gHints[index].fName; - -// canvas->translate(0, SkIntToScalar(50)); - - // canvas->drawText(style, strlen(style), SkIntToScalar(20), SkIntToScalar(20), paint); - -// paint.setTypeface(SkTypeface::Create(NULL, SkTypeface::kItalic))->unref(); - paint.setAntiAlias(true); - paint.setFlags(paint.getFlags() | gHints[index].fFlags); - - SkMSec now = 0; - if (REPEAT_COUNT > 1) - now = SkTime::GetMSecs(); - - SkRect clip; - clip.set(SkIntToScalar(25), SkIntToScalar(34), SkIntToScalar(88), SkIntToScalar(155)); - - if (0) { - canvas->clipRect(clip); - } - - if (0) { - SkPath clipPath; - clipPath.addOval(clip); - canvas->clipPath(clipPath); - } - - const char* text = "Hamburgefons"; - size_t length = strlen(text); - -#ifdef TEST_CLICKX - { - SkPaint p; - - p.setColor(SK_ColorGREEN); - p.setAntiAlias(true); - canvas->drawLine(fClickX, 0, fClickX, SkIntToScalar(1000), p); - } -#endif - - for (int j = 0; j < REPEAT_COUNT; j++) - { - SkScalar y = SkIntToScalar(0); - for (int i = 9; i <= 24; i++) { - paint.setTextSize(SkIntToScalar(i) /*+ (gRand.nextU() & 0xFFFF)*/); - for (SkScalar dx = 0; dx <= SkIntToScalar(3)/4; dx += SkIntToScalar(1) /* /4 */) - { - y += paint.getFontSpacing(); - DrawTheText(canvas, text, length, SkIntToScalar(20) + dx, y, paint, fClickX, fMF); - } - } - if (gHints[index].fFlushCache) { - SkGraphics::SetFontCacheUsed(0); - } - } - - if (REPEAT_COUNT > 1) - { - printf("--------- FPS = %g\n", REPEAT_COUNT * 1000. / (SkTime::GetMSecs() - now)); - this->inval(NULL); - } - } - - virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) - { - fClickX = x; - this->inval(NULL); - return this->INHERITED::onFindClickHandler(x, y); - } - - virtual bool onClick(Click* click) - { - return this->INHERITED::onClick(click); - } - -private: - int fHints; - SkScalar fClickX; - SkMaskFilter* fMF; - SkShader* fGradient; - - typedef SkView INHERITED; -}; - -////////////////////////////////////////////////////////////////////////////// - -static SkView* MyFactory() { return new TextSpeedView; } -static SkViewRegister reg(MyFactory); - |