Cleanup sample slide for drawTextOnPath
Review URL: https://codereview.appspot.com/5834048 git-svn-id: http://skia.googlecode.com/svn/trunk@3402 2bbb7eff-a529-9590-31e7-b0007b416f81
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djsollen@google.com
parent
1a38d5508f
commit
ae8ae3d1a2
@ -6,190 +6,67 @@
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* found in the LICENSE file.
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*/
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#include "SampleCode.h"
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#include "SkView.h"
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#include "SkBlurDrawLooper.h"
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#include "SkCanvas.h"
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#include "SkGradientShader.h"
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#include "SkGraphics.h"
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#include "SkImageDecoder.h"
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#include "SkPackBits.h"
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#include "SkPath.h"
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#include "SkPathMeasure.h"
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#include "SkRandom.h"
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#include "SkRegion.h"
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#include "SkShader.h"
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#include "SkUtils.h"
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#include "SkColorPriv.h"
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#include "SkColorFilter.h"
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#include "SkTypeface.h"
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#include "SkAvoidXfermode.h"
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#define REPEAT_COUNT 0
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#define REPEAT_COUNT 1
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static const char gText[] = "Hamburgefons";
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static bool gDevKern;
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static void rand_text(char text[], SkRandom& rand, size_t count) {
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for (size_t i = 0; i < count; i++) {
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text[i] = rand.nextU() & 0x7F;
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}
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}
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static SkScalar sum_widths(const SkScalar widths[], int count) {
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SkScalar w = 0;
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for (int i = 0; i < count; i++) {
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w += widths[i];
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}
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return w;
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}
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static void test_measure(const SkPaint& paint) {
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char text[256];
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SkScalar widths[256];
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SkRect rects[256];
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SkRect bounds;
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int count = 256;
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SkRandom rand;
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for (int i = 0; i < 100; i++) {
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rand_text(text, rand, 256);
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paint.getTextWidths(text, count, widths, NULL);
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SkDEBUGCODE(SkScalar tw0 = sum_widths(widths, count);)
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paint.getTextWidths(text, count, widths, rects);
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SkDEBUGCODE(SkScalar tw1 = sum_widths(widths, count);)
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SkASSERT(tw0 == tw1);
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SkDEBUGCODE(SkScalar w0 = paint.measureText(text, count, NULL);)
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SkDEBUGCODE(SkScalar w1 = paint.measureText(text, count, &bounds);)
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SkASSERT(w0 == w1);
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SkASSERT(w0 == tw0);
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SkRect r = rects[0];
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SkScalar x = 0;
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for (int j = 1; j < count; j++) {
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x += widths[j-1];
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rects[j].offset(x, 0);
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r.join(rects[j]);
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}
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SkASSERT(r == bounds);
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if (r != bounds) {
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printf("flags=%x i=%d [%g %g %g %g] [%g %g %g %g]\n",
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paint.getFlags(), i,
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SkScalarToFloat(r.fLeft),
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SkScalarToFloat(r.fTop),
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SkScalarToFloat(r.fRight),
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SkScalarToFloat(r.fBottom),
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SkScalarToFloat(bounds.fLeft),
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SkScalarToFloat(bounds.fTop),
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SkScalarToFloat(bounds.fRight),
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SkScalarToFloat(bounds.fBottom));
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}
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}
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}
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static void test_measure() {
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static void textStrokePath(SkCanvas* canvas) {
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SkPaint paint;
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for (int i = 0; i <= SkPaint::kAllFlags; i++) {
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paint.setFlags(i);
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test_measure(paint);
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}
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}
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SkPath path;
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SkRect rect;
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//////////////////////////////////////////////////////////////////////////////
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canvas->save();
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canvas->scale(SkIntToScalar(250),SkIntToScalar(250));
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static void test_textBounds(SkCanvas* canvas) {
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// canvas->scale(SK_Scalar1/2, SK_Scalar1/2);
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// canvas->rotate(SkIntToScalar(30));
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rect.set(0.0f, 0.21f, 0.78f, 0.99f);
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gDevKern = !gDevKern;
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SkScalar x = SkIntToScalar(50);
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SkScalar y = SkIntToScalar(150);
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SkScalar w[100];
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SkRect r[100], bounds;
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SkPaint paint;
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paint.setTextSize(SkIntToScalar(64));
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paint.setAntiAlias(true);
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paint.setDevKernText(gDevKern);
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(void)paint.measureText(gText, strlen(gText), &bounds);
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paint.setColor(SK_ColorGREEN);
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bounds.offset(x, y);
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canvas->drawRect(bounds, paint);
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int count = paint.getTextWidths(gText, strlen(gText), w, r);
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paint.setColor(SK_ColorRED);
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for (int i = 0; i < count; i++) {
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r[i].offset(x, y);
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canvas->drawRect(r[i], paint);
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x += w[i];
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}
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x = SkIntToScalar(50);
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paint.setColor(gDevKern ? SK_ColorDKGRAY : SK_ColorBLACK);
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canvas->drawText(gText, strlen(gText), x, y, paint);
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}
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static void create_src(SkBitmap* bitmap, SkBitmap::Config config) {
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bitmap->setConfig(config, 100, 100);
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bitmap->allocPixels();
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bitmap->eraseColor(0);
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SkCanvas canvas(*bitmap);
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SkPaint paint;
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path.addArc(rect, SkIntToScalar(280), SkIntToScalar(350));
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paint.setAntiAlias(true);
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canvas.drawCircle(SkIntToScalar(50), SkIntToScalar(50),
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SkIntToScalar(50), paint);
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setColor(0xFFFF0000);
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paint.setTextSize(SkFloatToScalar(0.065f));
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paint.setStrokeWidth(SkFloatToScalar(.01f));
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canvas->drawPath(path, paint);
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paint.setLooper(new SkBlurDrawLooper(SkFloatToScalar(0.002f),
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SkFloatToScalar(0.0f),
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SkFloatToScalar(0.0f),
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(SkColor)0xFF000000))->unref();
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const char* text = "DRAWING STROKED TEXT WITH A BLUR ON A PATH";
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size_t len = strlen(text);
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canvas->drawTextOnPathHV(text, len, path, 0, -0.025f, paint);
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canvas->restore();
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}
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static void blur(SkBitmap* dst, const SkBitmap& src, SkScalar radius) {
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*dst = src;
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}
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static void test_bitmap_blur(SkCanvas* canvas) {
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SkBitmap src, dst;
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create_src(&src, SkBitmap::kARGB_8888_Config);
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blur(&dst, src, SkIntToScalar(4));
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SkPaint paint;
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paint.setColor(SK_ColorRED);
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canvas->drawBitmap(dst, SkIntToScalar(30), SkIntToScalar(60), &paint);
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}
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static SkScalar getpathlen(const SkPath& path) {
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SkPathMeasure meas(path, false);
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return meas.getLength();
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}
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static void test_textpathmatrix(SkCanvas* canvas) {
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static void textPathMatrix(SkCanvas* canvas) {
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SkPaint paint;
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SkPath path;
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SkMatrix matrix;
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path.moveTo(SkIntToScalar(200), SkIntToScalar(300));
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path.quadTo(SkIntToScalar(400), SkIntToScalar(100),
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SkIntToScalar(600), SkIntToScalar(300));
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path.moveTo(SkIntToScalar(050), SkIntToScalar(200));
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path.quadTo(SkIntToScalar(250), SkIntToScalar(000),
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SkIntToScalar(450), SkIntToScalar(200));
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paint.setAntiAlias(true);
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paint.setStyle(SkPaint::kStroke_Style);
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// canvas->drawPath(path, paint);
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canvas->drawPath(path, paint);
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paint.setStyle(SkPaint::kFill_Style);
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paint.setTextSize(SkIntToScalar(48));
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paint.setTextAlign(SkPaint::kRight_Align);
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const char* text = "Reflection";
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size_t len = strlen(text);
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SkScalar pathLen = getpathlen(path);
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SkPathMeasure meas(path, false);
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SkScalar pathLen = meas.getLength();
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canvas->drawTextOnPath(text, len, path, NULL, paint);
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@ -218,7 +95,7 @@ public:
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r.set(SkIntToScalar(100), SkIntToScalar(100),
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SkIntToScalar(300), SkIntToScalar(300));
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fPath.addOval(r);
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fPath.offset(SkIntToScalar(200), 0);
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fPath.offset(SkIntToScalar(-50), SkIntToScalar(-50));
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fHOffset = SkIntToScalar(50);
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}
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@ -235,32 +112,37 @@ protected:
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virtual void onDrawContent(SkCanvas* canvas) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(SkIntToScalar(50));
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paint.setTextSize(SkIntToScalar(48));
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const char* text = "Hamburgefons";
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size_t len = strlen(text);
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for (int j = 0; j < REPEAT_COUNT; j++) {
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SkScalar x = fHOffset;
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paint.setColor(SK_ColorBLACK);
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canvas->drawTextOnPathHV(gText, sizeof(gText)-1, fPath,
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canvas->drawTextOnPathHV(text, len, fPath,
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x, paint.getTextSize()/2, paint);
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paint.setColor(SK_ColorRED);
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canvas->drawTextOnPathHV(gText, sizeof(gText)-1, fPath,
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canvas->drawTextOnPathHV(text, len, fPath,
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x + SkIntToScalar(50), 0, paint);
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paint.setColor(SK_ColorBLUE);
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canvas->drawTextOnPathHV(gText, sizeof(gText)-1, fPath,
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canvas->drawTextOnPathHV(text, len, fPath,
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x + SkIntToScalar(100), -paint.getTextSize()/2, paint);
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}
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paint.setColor(SK_ColorGREEN);
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paint.setStyle(SkPaint::kStroke_Style);
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// canvas->drawPath(fPath, paint);
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canvas->drawPath(fPath, paint);
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canvas->translate(0, SkIntToScalar(100));
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test_textpathmatrix(canvas);
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canvas->translate(SkIntToScalar(275), 0);
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textStrokePath(canvas);
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canvas->translate(SkIntToScalar(-275), SkIntToScalar(250));
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textPathMatrix(canvas);
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if (REPEAT_COUNT > 1)
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this->inval(NULL);
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