зеркало из https://github.com/mozilla/moz-skia.git
236 строки
8.1 KiB
C++
236 строки
8.1 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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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 "SkCanvas.h"
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#include "Sk64.h"
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#include "SkCornerPathEffect.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 "SkKernel33MaskFilter.h"
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#include "SkPath.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 "SkTime.h"
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#include "SkTypeface.h"
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#include "SkXfermode.h"
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#include "SkStream.h"
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#include "SkXMLParser.h"
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#include "SkColorPriv.h"
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#include "SkImageDecoder.h"
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#include "SkBlurMaskFilter.h"
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#ifdef SK_BUILD_FOR_MAC
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#import <ApplicationServices/ApplicationServices.h>
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SkTypeface* SkCreateTypefaceFromCTFont(CTFontRef fontRef);
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#endif
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static void setNamedTypeface(SkPaint* paint, const char name[]) {
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SkTypeface* face = SkTypeface::CreateFromName(name, SkTypeface::kNormal);
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paint->setTypeface(face);
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SkSafeUnref(face);
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}
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static uint16_t gBG[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF };
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class XfermodesBlurView : public SampleView {
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SkBitmap fBG;
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SkBitmap fSrcB, fDstB;
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void draw_mode(SkCanvas* canvas, SkXfermode* mode, int alpha,
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SkScalar x, SkScalar y) {
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SkPaint p;
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SkMaskFilter* mf = SkBlurMaskFilter::Create(5, SkBlurMaskFilter::kNormal_BlurStyle, 0);
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p.setMaskFilter(mf)->unref();
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SkScalar ww = SkIntToScalar(W);
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SkScalar hh = SkIntToScalar(H);
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// draw a circle covering the upper
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// left three quarters of the canvas
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p.setColor(0xFFCC44FF);
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SkRect r;
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r.set(0, 0, ww*3/4, hh*3/4);
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r.offset(x, y);
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canvas->drawOval(r, p);
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p.setXfermode(mode);
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// draw a square overlapping the circle
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// in the lower right of the canvas
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p.setColor(0x00AA6633 | alpha << 24);
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r.set(ww/3, hh/3, ww*19/20, hh*19/20);
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r.offset(x, y);
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canvas->drawRect(r, p);
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#ifdef SK_BUILD_FOR_MAC
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static const char* gNames[] = { "Arial", "Times", "Courier", "Lucida" };
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for (size_t j = 0; j < SK_ARRAY_COUNT(gNames); ++j) {
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CFStringRef name = CFStringCreateWithCString(NULL, gNames[j], kCFStringEncodingUTF8);
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CTFontRef font = CTFontCreateWithName(name, 0, NULL);
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SkTypeface* face = SkCreateTypefaceFromCTFont(font);
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SkDebugf("%s ct:%p face:%p ats:%p\n", gNames[j], font, face, CTFontGetPlatformFont(font, NULL));
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for (int i = 9; i <= 24; ++i) {
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CTFontRef newFont = CTFontCreateCopyWithAttributes(font, i, NULL, NULL);
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SkTypeface* newFace = SkCreateTypefaceFromCTFont(newFont);
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SkDebugf("size:%d ct:%p face:%p ats:%p\n", i, newFont, newFace, CTFontGetPlatformFont(newFont, NULL));
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newFace->unref();
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CFRelease(newFont);
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}
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face->unref();
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CFRelease(font);
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CFRelease(name);
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}
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#endif
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}
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public:
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const static int W = 64;
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const static int H = 64;
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XfermodesBlurView() {
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fBG.setConfig(SkBitmap::kARGB_4444_Config, 2, 2, 4);
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fBG.setPixels(gBG);
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fBG.setIsOpaque(true);
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "XfermodesBlur");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
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if (false) {
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setTextSize(50);
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paint.setTypeface(SkTypeface::CreateFromName("Arial Unicode MS", SkTypeface::kNormal));
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SkSafeUnref(paint.getTypeface());
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char buffer[10];
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size_t len = SkUTF8_FromUnichar(0x8500, buffer);
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canvas->drawText(buffer, len, 40, 40, paint);
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return;
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}
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if (false) {
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SkPaint paint;
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paint.setAntiAlias(true);
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SkRect r0 = { 0, 0, 10.5f, 20 };
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SkRect r1 = { 10.5f, 10, 20, 30 };
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paint.setColor(SK_ColorRED);
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canvas->drawRect(r0, paint);
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paint.setColor(SK_ColorBLUE);
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canvas->drawRect(r1, paint);
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return;
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}
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const struct {
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SkXfermode::Mode fMode;
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const char* fLabel;
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} gModes[] = {
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{ SkXfermode::kClear_Mode, "Clear" },
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{ SkXfermode::kSrc_Mode, "Src" },
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{ SkXfermode::kDst_Mode, "Dst" },
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{ SkXfermode::kSrcOver_Mode, "SrcOver" },
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{ SkXfermode::kDstOver_Mode, "DstOver" },
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{ SkXfermode::kSrcIn_Mode, "SrcIn" },
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{ SkXfermode::kDstIn_Mode, "DstIn" },
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{ SkXfermode::kSrcOut_Mode, "SrcOut" },
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{ SkXfermode::kDstOut_Mode, "DstOut" },
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{ SkXfermode::kSrcATop_Mode, "SrcATop" },
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{ SkXfermode::kDstATop_Mode, "DstATop" },
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{ SkXfermode::kXor_Mode, "Xor" },
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{ SkXfermode::kPlus_Mode, "Plus" },
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/*{ SkXfermode::kMultiply_Mode, "Multiply" },
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{ SkXfermode::kScreen_Mode, "Screen" },
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{ SkXfermode::kOverlay_Mode, "Overlay" },
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{ SkXfermode::kDarken_Mode, "Darken" },
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{ SkXfermode::kLighten_Mode, "Lighten" },
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{ SkXfermode::kColorDodge_Mode, "ColorDodge" },
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{ SkXfermode::kColorBurn_Mode, "ColorBurn" },
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{ SkXfermode::kHardLight_Mode, "HardLight" },
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{ SkXfermode::kSoftLight_Mode, "SoftLight" },
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{ SkXfermode::kDifference_Mode, "Difference" },
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{ SkXfermode::kExclusion_Mode, "Exclusion" },*/
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};
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const SkScalar w = SkIntToScalar(W);
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const SkScalar h = SkIntToScalar(H);
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SkShader* s = SkShader::CreateBitmapShader(fBG,
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SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode);
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SkMatrix m;
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m.setScale(SkIntToScalar(6), SkIntToScalar(6));
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s->setLocalMatrix(m);
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SkPaint labelP;
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labelP.setAntiAlias(true);
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labelP.setLCDRenderText(true);
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labelP.setTextAlign(SkPaint::kCenter_Align);
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setNamedTypeface(&labelP, "Menlo Regular");
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const int W = 5;
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SkScalar x0 = 0;
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for (int twice = 0; twice < 2; twice++) {
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SkScalar x = x0, y = 0;
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for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) {
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SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
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SkAutoUnref aur(mode);
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SkRect r;
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r.set(x, y, x+w, y+h);
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SkPaint p;
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p.setStyle(SkPaint::kFill_Style);
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p.setShader(s);
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canvas->drawRect(r, p);
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canvas->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag);
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draw_mode(canvas, mode, twice ? 0x88 : 0xFF, r.fLeft, r.fTop);
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canvas->restore();
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r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
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p.setStyle(SkPaint::kStroke_Style);
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p.setShader(NULL);
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canvas->drawRect(r, p);
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canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel),
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x + w/2, y - labelP.getTextSize()/2, labelP);
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x += w + SkIntToScalar(10);
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if ((i % W) == W - 1) {
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x = x0;
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y += h + SkIntToScalar(30);
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}
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}
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x0 += SkIntToScalar(400);
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}
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s->unref();
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}
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private:
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typedef SampleView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new XfermodesBlurView; }
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static SkViewRegister reg(MyFactory);
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