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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
#include "SkGradientShader.h"
#include "SkGraphics.h"
#include "SkImageDecoder.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 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 = SkIntToScalar((unsigned int)n);
mm = m;
}
SkDEBUGCODE(size_t length2 =) paint.breakText(text, length, width, &mm);
SkASSERT(length2 == length);
SkASSERT(mm == width);
}
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 }
};
static void DrawTheText(SkCanvas* canvas, const char text[], size_t length, SkScalar x, SkScalar y,
const SkPaint& paint, SkScalar clickX) {
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 SK_DEBUG
if (true) {
p.setSubpixelText(false);
p.setLinearText(true);
x += SkIntToScalar(180);
canvas->drawText(text, length, x, y, p);
}
#endif
}
class TextSpeedView : public SampleView {
public:
TextSpeedView() {
fHints = 0;
fClickX = 0;
test_breakText();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Text");
return true;
}
return this->INHERITED::onQuery(evt);
}
static void make_textstrip(SkBitmap* bm) {
bm->allocPixels(SkImageInfo::Make(200, 18, kRGB_565_SkColorType,
kOpaque_SkAlphaType));
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 onDrawContent(SkCanvas* canvas) {
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);
SkSafeUnref(paint.setTypeface(SkTypeface::CreateFromFile("/skimages/samplefont.ttf")));
paint.setAntiAlias(true);
paint.setFlags(paint.getFlags() | gHints[index].fFlags);
SkRect clip;
clip.set(SkIntToScalar(25), SkIntToScalar(34), SkIntToScalar(88), SkIntToScalar(155));
const char* text = "Hamburgefons";
size_t length = strlen(text);
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);
}
}
if (gHints[index].fFlushCache) {
// SkGraphics::SetFontCacheUsed(0);
}
}
virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y,
unsigned modi) SK_OVERRIDE {
fClickX = x;
this->inval(NULL);
return this->INHERITED::onFindClickHandler(x, y, modi);
}
virtual bool onClick(Click* click) {
return this->INHERITED::onClick(click);
}
private:
int fHints;
SkScalar fClickX;
typedef SampleView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new TextSpeedView; }
static SkViewRegister reg(MyFactory);
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