4e8f1e56b1
In some cases, the wrong clip (src clip instead of initial clip) was used. Switch almost exclusively to initial clip because it is safe and generates a smaller result. BUG=chromium:328009 R=reed@google.com, bungeman@google.com Author: vandebo@chromium.org Review URL: https://codereview.chromium.org/116423004 git-svn-id: http://skia.googlecode.com/svn/trunk@12729 2bbb7eff-a529-9590-31e7-b0007b416f81
295 lines
11 KiB
C++
295 lines
11 KiB
C++
|
|
/*
|
|
* 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 "gm.h"
|
|
#include "SkBitmap.h"
|
|
#include "SkShader.h"
|
|
#include "SkXfermode.h"
|
|
|
|
namespace skiagm {
|
|
|
|
static void make_bitmaps(int w, int h, SkBitmap* src, SkBitmap* dst,
|
|
SkBitmap* transparent) {
|
|
src->setConfig(SkBitmap::kARGB_8888_Config, w, h);
|
|
src->allocPixels();
|
|
src->eraseColor(SK_ColorTRANSPARENT);
|
|
|
|
SkPaint p;
|
|
p.setAntiAlias(true);
|
|
|
|
SkRect r;
|
|
SkScalar ww = SkIntToScalar(w);
|
|
SkScalar hh = SkIntToScalar(h);
|
|
|
|
{
|
|
SkCanvas c(*src);
|
|
p.setColor(0xFFFFCC44);
|
|
r.set(0, 0, ww*3/4, hh*3/4);
|
|
c.drawOval(r, p);
|
|
}
|
|
|
|
dst->setConfig(SkBitmap::kARGB_8888_Config, w, h);
|
|
dst->allocPixels();
|
|
dst->eraseColor(SK_ColorTRANSPARENT);
|
|
|
|
{
|
|
SkCanvas c(*dst);
|
|
p.setColor(0xFF66AAFF);
|
|
r.set(ww/3, hh/3, ww*19/20, hh*19/20);
|
|
c.drawRect(r, p);
|
|
}
|
|
|
|
transparent->setConfig(SkBitmap::kARGB_8888_Config, w, h);
|
|
transparent->allocPixels();
|
|
transparent->eraseColor(SK_ColorTRANSPARENT);
|
|
}
|
|
|
|
static uint16_t gData[] = { 0xFFFF, 0xCCCF, 0xCCCF, 0xFFFF };
|
|
|
|
class XfermodesGM : public GM {
|
|
enum SrcType {
|
|
//! A WxH image with a rectangle in the lower right.
|
|
kRectangleImage_SrcType = 0x01,
|
|
//! kRectangleImage_SrcType with an alpha of 34.5%.
|
|
kRectangleImageWithAlpha_SrcType = 0x02,
|
|
//! kRectnagleImageWithAlpha_SrcType scaled down by half.
|
|
kSmallRectangleImageWithAlpha_SrcType = 0x04,
|
|
//! kRectangleImage_SrcType drawn directly instead in an image.
|
|
kRectangle_SrcType = 0x08,
|
|
//! Two rectangles, first on the right half, second on the bottom half.
|
|
kQuarterClear_SrcType = 0x10,
|
|
//! kQuarterClear_SrcType in a layer.
|
|
kQuarterClearInLayer_SrcType = 0x20,
|
|
//! A W/2xH/2 transparent image.
|
|
kSmallTransparentImage_SrcType = 0x40,
|
|
//! kRectangleImage_SrcType drawn directly with a mask.
|
|
kRectangleWithMask_SrcType = 0x80,
|
|
|
|
kAll_SrcType = 0xFF, //!< All the source types.
|
|
kBasic_SrcType = 0x03, //!< Just basic source types.
|
|
};
|
|
|
|
SkBitmap fBG;
|
|
SkBitmap fSrcB, fDstB, fTransparent;
|
|
|
|
/* The srcType argument indicates what to draw for the source part. Skia
|
|
* uses the implied shape of the drawing command and these modes
|
|
* demonstrate that.
|
|
*/
|
|
void draw_mode(SkCanvas* canvas, SkXfermode* mode, SrcType srcType,
|
|
SkScalar x, SkScalar y) {
|
|
SkPaint p;
|
|
SkMatrix m;
|
|
bool restoreNeeded = false;
|
|
m.setTranslate(x, y);
|
|
|
|
canvas->drawBitmapMatrix(fSrcB, m, &p);
|
|
p.setXfermode(mode);
|
|
switch (srcType) {
|
|
case kSmallTransparentImage_SrcType:
|
|
m.postScale(SK_ScalarHalf, SK_ScalarHalf, x, y);
|
|
canvas->drawBitmapMatrix(fTransparent, m, &p);
|
|
break;
|
|
case kQuarterClearInLayer_SrcType: {
|
|
SkRect bounds = SkRect::MakeXYWH(x, y, SkIntToScalar(W),
|
|
SkIntToScalar(H));
|
|
canvas->saveLayer(&bounds, &p);
|
|
restoreNeeded = true;
|
|
p.setXfermodeMode(SkXfermode::kSrcOver_Mode);
|
|
// Fall through.
|
|
}
|
|
case kQuarterClear_SrcType: {
|
|
SkScalar halfW = SkIntToScalar(W) / 2;
|
|
SkScalar halfH = SkIntToScalar(H) / 2;
|
|
p.setColor(0xFF66AAFF);
|
|
SkRect r = SkRect::MakeXYWH(x + halfW, y, halfW,
|
|
SkIntToScalar(H));
|
|
canvas->drawRect(r, p);
|
|
p.setColor(0xFFAA66FF);
|
|
r = SkRect::MakeXYWH(x, y + halfH, SkIntToScalar(W), halfH);
|
|
canvas->drawRect(r, p);
|
|
break;
|
|
}
|
|
case kRectangleWithMask_SrcType: {
|
|
canvas->save(SkCanvas::kClip_SaveFlag);
|
|
restoreNeeded = true;
|
|
SkScalar w = SkIntToScalar(W);
|
|
SkScalar h = SkIntToScalar(H);
|
|
SkRect r = SkRect::MakeXYWH(x, y + h / 4, w, h * 23 / 60);
|
|
canvas->clipRect(r);
|
|
// Fall through.
|
|
}
|
|
case kRectangle_SrcType: {
|
|
SkScalar w = SkIntToScalar(W);
|
|
SkScalar h = SkIntToScalar(H);
|
|
SkRect r = SkRect::MakeXYWH(x + w / 3, y + h / 3,
|
|
w * 37 / 60, h * 37 / 60);
|
|
p.setColor(0xFF66AAFF);
|
|
canvas->drawRect(r, p);
|
|
break;
|
|
}
|
|
case kSmallRectangleImageWithAlpha_SrcType:
|
|
m.postScale(SK_ScalarHalf, SK_ScalarHalf, x, y);
|
|
// Fall through.
|
|
case kRectangleImageWithAlpha_SrcType:
|
|
p.setAlpha(0x88);
|
|
// Fall through.
|
|
case kRectangleImage_SrcType:
|
|
canvas->drawBitmapMatrix(fDstB, m, &p);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (restoreNeeded) {
|
|
canvas->restore();
|
|
}
|
|
}
|
|
|
|
virtual void onOnceBeforeDraw() SK_OVERRIDE {
|
|
fBG.setConfig(SkBitmap::kARGB_4444_Config, 2, 2, 4, kOpaque_SkAlphaType);
|
|
fBG.setPixels(gData);
|
|
|
|
make_bitmaps(W, H, &fSrcB, &fDstB, &fTransparent);
|
|
}
|
|
|
|
public:
|
|
const static int W = 64;
|
|
const static int H = 64;
|
|
XfermodesGM() {}
|
|
|
|
protected:
|
|
virtual SkString onShortName() {
|
|
return SkString("xfermodes");
|
|
}
|
|
|
|
virtual SkISize onISize() {
|
|
return make_isize(1990, 640);
|
|
}
|
|
|
|
virtual void onDraw(SkCanvas* canvas) {
|
|
canvas->translate(SkIntToScalar(10), SkIntToScalar(20));
|
|
|
|
const struct {
|
|
SkXfermode::Mode fMode;
|
|
const char* fLabel;
|
|
int fSourceTypeMask; // The source types to use this
|
|
// mode with. See draw_mode for
|
|
// an explanation of each type.
|
|
// PDF has to play some tricks
|
|
// to support the base modes,
|
|
// test those more extensively.
|
|
} gModes[] = {
|
|
{ SkXfermode::kClear_Mode, "Clear", kAll_SrcType },
|
|
{ SkXfermode::kSrc_Mode, "Src", kAll_SrcType },
|
|
{ SkXfermode::kDst_Mode, "Dst", kAll_SrcType },
|
|
{ SkXfermode::kSrcOver_Mode, "SrcOver", kAll_SrcType },
|
|
{ SkXfermode::kDstOver_Mode, "DstOver", kAll_SrcType },
|
|
{ SkXfermode::kSrcIn_Mode, "SrcIn", kAll_SrcType },
|
|
{ SkXfermode::kDstIn_Mode, "DstIn", kAll_SrcType },
|
|
{ SkXfermode::kSrcOut_Mode, "SrcOut", kAll_SrcType },
|
|
{ SkXfermode::kDstOut_Mode, "DstOut", kAll_SrcType },
|
|
{ SkXfermode::kSrcATop_Mode, "SrcATop", kAll_SrcType },
|
|
{ SkXfermode::kDstATop_Mode, "DstATop", kAll_SrcType },
|
|
|
|
{ SkXfermode::kXor_Mode, "Xor", kBasic_SrcType },
|
|
{ SkXfermode::kPlus_Mode, "Plus", kBasic_SrcType },
|
|
{ SkXfermode::kModulate_Mode, "Modulate", kAll_SrcType },
|
|
{ SkXfermode::kScreen_Mode, "Screen", kBasic_SrcType },
|
|
{ SkXfermode::kOverlay_Mode, "Overlay", kBasic_SrcType },
|
|
{ SkXfermode::kDarken_Mode, "Darken", kBasic_SrcType },
|
|
{ SkXfermode::kLighten_Mode, "Lighten", kBasic_SrcType },
|
|
{ SkXfermode::kColorDodge_Mode, "ColorDodge", kBasic_SrcType },
|
|
{ SkXfermode::kColorBurn_Mode, "ColorBurn", kBasic_SrcType },
|
|
{ SkXfermode::kHardLight_Mode, "HardLight", kBasic_SrcType },
|
|
{ SkXfermode::kSoftLight_Mode, "SoftLight", kBasic_SrcType },
|
|
{ SkXfermode::kDifference_Mode, "Difference", kBasic_SrcType },
|
|
{ SkXfermode::kExclusion_Mode, "Exclusion", kBasic_SrcType },
|
|
{ SkXfermode::kMultiply_Mode, "Multiply", kAll_SrcType },
|
|
{ SkXfermode::kHue_Mode, "Hue", kBasic_SrcType },
|
|
{ SkXfermode::kSaturation_Mode, "Saturation", kBasic_SrcType },
|
|
{ SkXfermode::kColor_Mode, "Color", kBasic_SrcType },
|
|
{ SkXfermode::kLuminosity_Mode, "Luminosity", kBasic_SrcType },
|
|
};
|
|
|
|
const SkScalar w = SkIntToScalar(W);
|
|
const SkScalar h = SkIntToScalar(H);
|
|
SkShader* s = SkShader::CreateBitmapShader(fBG,
|
|
SkShader::kRepeat_TileMode,
|
|
SkShader::kRepeat_TileMode);
|
|
SkMatrix m;
|
|
m.setScale(SkIntToScalar(6), SkIntToScalar(6));
|
|
s->setLocalMatrix(m);
|
|
|
|
SkPaint labelP;
|
|
labelP.setAntiAlias(true);
|
|
labelP.setTextAlign(SkPaint::kCenter_Align);
|
|
|
|
const int W = 5;
|
|
|
|
SkScalar x0 = 0;
|
|
SkScalar y0 = 0;
|
|
for (int sourceType = 1; sourceType & kAll_SrcType; sourceType <<= 1) {
|
|
SkScalar x = x0, y = y0;
|
|
for (size_t i = 0; i < SK_ARRAY_COUNT(gModes); i++) {
|
|
if ((gModes[i].fSourceTypeMask & sourceType) == 0) {
|
|
continue;
|
|
}
|
|
SkXfermode* mode = SkXfermode::Create(gModes[i].fMode);
|
|
SkAutoUnref aur(mode);
|
|
SkRect r;
|
|
r.set(x, y, x+w, y+h);
|
|
|
|
SkPaint p;
|
|
p.setStyle(SkPaint::kFill_Style);
|
|
p.setShader(s);
|
|
canvas->drawRect(r, p);
|
|
|
|
canvas->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag);
|
|
draw_mode(canvas, mode, static_cast<SrcType>(sourceType),
|
|
r.fLeft, r.fTop);
|
|
canvas->restore();
|
|
|
|
r.inset(-SK_ScalarHalf, -SK_ScalarHalf);
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setShader(NULL);
|
|
canvas->drawRect(r, p);
|
|
|
|
#if 1
|
|
canvas->drawText(gModes[i].fLabel, strlen(gModes[i].fLabel),
|
|
x + w/2, y - labelP.getTextSize()/2, labelP);
|
|
#endif
|
|
x += w + SkIntToScalar(10);
|
|
if ((i % W) == W - 1) {
|
|
x = x0;
|
|
y += h + SkIntToScalar(30);
|
|
}
|
|
}
|
|
if (y < 320) {
|
|
if (x > x0) {
|
|
y += h + SkIntToScalar(30);
|
|
}
|
|
y0 = y;
|
|
} else {
|
|
x0 += SkIntToScalar(400);
|
|
y0 = 0;
|
|
}
|
|
}
|
|
s->unref();
|
|
}
|
|
|
|
private:
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
static GM* MyFactory(void*) { return new XfermodesGM; }
|
|
static GMRegistry reg(MyFactory);
|
|
|
|
}
|