reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1 | #include "SampleCode.h" |
| 2 | #include "SkView.h" |
| 3 | #include "SkCanvas.h" |
| 4 | #include "SkGradientShader.h" |
| 5 | #include "SkPath.h" |
| 6 | #include "SkRegion.h" |
| 7 | #include "SkShader.h" |
| 8 | #include "SkUtils.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "Sk1DPathEffect.h" |
| 10 | #include "SkCornerPathEffect.h" |
| 11 | #include "SkPathMeasure.h" |
| 12 | #include "SkRandom.h" |
| 13 | #include "SkColorPriv.h" |
| 14 | #include "SkColorFilter.h" |
| 15 | #include "SkDither.h" |
| 16 | |
| 17 | // exercise scale/linear/devkern |
| 18 | struct Setting { |
| 19 | SkScalar fScale; |
| 20 | bool fLinearText; |
| 21 | bool fDevKernText; |
| 22 | }; |
| 23 | |
| 24 | static const SkScalar ONE = SkIntToScalar(9999)/10000; |
| 25 | |
| 26 | static const Setting gSettings[] = { |
| 27 | { 0, false, false }, |
| 28 | { 0, false, true }, |
| 29 | { 0, true, false }, |
| 30 | { 0, true, true }, |
| 31 | { ONE, false, false }, |
| 32 | { ONE, false, true }, |
| 33 | { ONE, true, false }, |
| 34 | { ONE, true, true } |
| 35 | }; |
| 36 | |
| 37 | static void doMeasure(SkCanvas* canvas, const SkPaint& paint, const char text[]) |
| 38 | { |
| 39 | SkScalar dy = paint.getFontMetrics(NULL); |
| 40 | |
| 41 | size_t len = strlen(text); |
| 42 | SkAutoTMalloc<SkScalar> autoWidths(len); |
| 43 | SkScalar* widths = autoWidths.get(); |
| 44 | SkAutoTMalloc<SkRect> autoRects(len); |
| 45 | SkRect* rects = autoRects.get(); |
| 46 | SkRect bounds; |
| 47 | |
| 48 | SkPaint p(paint); |
| 49 | for (int i = 0; i < SK_ARRAY_COUNT(gSettings); i++) { |
| 50 | p.setLinearText(gSettings[i].fLinearText); |
| 51 | p.setDevKernText(gSettings[i].fDevKernText); |
| 52 | SkScalar scale = gSettings[i].fScale; |
| 53 | |
| 54 | int n = p.getTextWidths(text, len, widths, rects); |
| 55 | SkScalar w = p.measureText(text, len, &bounds, scale); |
| 56 | |
| 57 | p.setStyle(SkPaint::kFill_Style); |
| 58 | p.setColor(0x8888FF88); |
| 59 | canvas->drawRect(bounds, p); |
| 60 | p.setColor(0xFF000000); |
| 61 | canvas->drawText(text, len, 0, 0, p); |
| 62 | |
| 63 | p.setStyle(SkPaint::kStroke_Style); |
| 64 | p.setStrokeWidth(0); |
| 65 | p.setColor(0xFFFF0000); |
| 66 | SkScalar x = 0; |
| 67 | for (int j = 0; j < n; j++) { |
| 68 | SkRect r = rects[j]; |
| 69 | r.offset(x, 0); |
| 70 | canvas->drawRect(r, p); |
| 71 | x += widths[j]; |
| 72 | } |
| 73 | |
| 74 | p.setColor(0xFF0000FF); |
| 75 | canvas->drawLine(0, 0, w, 0, p); |
| 76 | p.setStrokeWidth(SkIntToScalar(4)); |
| 77 | canvas->drawPoint(x, 0, p); |
| 78 | |
| 79 | canvas->translate(0, dy); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | class MeasureView : public SkView { |
| 84 | public: |
| 85 | SkPaint fPaint; |
| 86 | |
| 87 | MeasureView() |
| 88 | { |
| 89 | fPaint.setAntiAlias(true); |
| 90 | fPaint.setTextSize(SkIntToScalar(64)); |
| 91 | } |
| 92 | |
| 93 | protected: |
| 94 | // overrides from SkEventSink |
| 95 | virtual bool onQuery(SkEvent* evt) |
| 96 | { |
| 97 | if (SampleCode::TitleQ(*evt)) |
| 98 | { |
| 99 | SampleCode::TitleR(evt, "Measure"); |
| 100 | return true; |
| 101 | } |
| 102 | return this->INHERITED::onQuery(evt); |
| 103 | } |
| 104 | |
| 105 | void drawBG(SkCanvas* canvas) |
| 106 | { |
| 107 | canvas->drawColor(0xFFDDDDDD); |
| 108 | } |
| 109 | |
| 110 | virtual void onDraw(SkCanvas* canvas) |
| 111 | { |
| 112 | this->drawBG(canvas); |
| 113 | |
| 114 | canvas->translate(fPaint.getTextSize(), fPaint.getTextSize()); |
| 115 | doMeasure(canvas, fPaint, "Hamburgefons"); |
| 116 | } |
| 117 | |
| 118 | virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) |
| 119 | { |
| 120 | // fSweep += SK_Scalar1; |
| 121 | this->inval(NULL); |
| 122 | return this->INHERITED::onFindClickHandler(x, y); |
| 123 | } |
| 124 | |
| 125 | virtual bool onClick(Click* click) |
| 126 | { |
| 127 | return this->INHERITED::onClick(click); |
| 128 | } |
| 129 | |
| 130 | private: |
| 131 | typedef SkView INHERITED; |
| 132 | }; |
| 133 | |
| 134 | ////////////////////////////////////////////////////////////////////////////// |
| 135 | |
| 136 | static SkView* MyFactory() { return new MeasureView; } |
| 137 | static SkViewRegister reg(MyFactory); |
| 138 | |