2011-12-21 14:27:14 +00:00
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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 "gm.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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2016-09-06 16:06:18 +00:00
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static void do_draw(SkCanvas* canvas, const SkRect& r) {
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SkPaint paint;
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paint.setXfermodeMode(SkXfermode::kSrc_Mode);
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paint.setColor(0x800000FF);
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canvas->drawRect(r, paint);
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}
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/**
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* Exercise kDontClipToLayer_Legacy_SaveLayerFlag flag, which does not limit the clip to the
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* layer's bounds. Thus when a draw occurs, it can (depending on "where" it is) draw into the layer
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* and/or draw onto the surrounding portions of the canvas, or both.
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*
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* This GM has a 100x100 rectangle (r), which its going to draw. However first it creates a layer
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* with this flag covering 1/2 of the rectangle (upper half). Then it draws the rect in SRC mode.
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*
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* The portion of the draw that intersects the layer should see the SRC draw, apply it to the layer
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* and then during restore, it will SRC_OVER that layer onto the canvas (SRC_OVER since the layer
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* has no paint, so it gets the default xfermode during restore).
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*
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2016-09-06 21:57:00 +00:00
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* Note: when we talk about drawing directly into the "canvas", in fact we are drawing into an
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* "outer" layer we created (filled with red). This is a testing detail, so that our final
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* output image is itself opaque, otherwise we make it harder to view the GM as a PNG.
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*
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2016-09-06 16:06:18 +00:00
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* The portion of the draw below the layer draws directly into the canvas. Since it is in SRC mode,
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2016-09-06 21:57:00 +00:00
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* it will write 0x80 to the canvas' alpha, overwriting the "red", which then gets blended with
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* the GM's white background.
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*
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* The portion in the layer, will end up SRC_OVERing the 0x80 layer pixels onto the canvas' red
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* pixels, making magenta.
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2016-09-06 16:06:18 +00:00
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*
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2016-09-06 21:57:00 +00:00
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* Thus the expected result is the upper half to be magenta 0xFF7F0080, and the lower half to be
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* light blue 0xFF7F7FFF.
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2016-09-06 16:06:18 +00:00
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*/
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DEF_SIMPLE_GM(dont_clip_to_layer, canvas, 120, 120) {
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2016-09-06 21:57:00 +00:00
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const SkRect r { 10, 10, 110, 110 };
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// Wrap the entire test inside a red layer, so we don't punch the actual gm's alpha with
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// kSrc_Mode, which makes it hard to view (we like our GMs to have opaque pixels).
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canvas->saveLayer(&r, nullptr);
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canvas->drawColor(SK_ColorRED);
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2016-09-06 16:06:18 +00:00
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SkRect r0 = SkRect::MakeXYWH(r.left(), r.top(), r.width(), r.height()/2);
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SkCanvas::SaveLayerRec rec;
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rec.fPaint = nullptr;
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rec.fBounds = &r0;
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rec.fBackdrop = nullptr;
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rec.fSaveLayerFlags = 1 << 31;//SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag;
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canvas->saveLayer(rec);
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do_draw(canvas, r);
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canvas->restore();
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2016-09-06 21:57:00 +00:00
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canvas->restore(); // red-layer
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2016-09-06 16:06:18 +00:00
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}
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2011-12-21 14:27:14 +00:00
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/** Draw a 2px border around the target, then red behind the target;
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set the clip to match the target, then draw >> the target in blue.
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*/
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2014-02-13 17:14:46 +00:00
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static void draw(SkCanvas* canvas, SkRect& target, int x, int y) {
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2011-12-21 14:27:14 +00:00
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SkPaint borderPaint;
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borderPaint.setColor(SkColorSetRGB(0x0, 0xDD, 0x0));
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borderPaint.setAntiAlias(true);
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SkPaint backgroundPaint;
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backgroundPaint.setColor(SkColorSetRGB(0xDD, 0x0, 0x0));
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backgroundPaint.setAntiAlias(true);
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SkPaint foregroundPaint;
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foregroundPaint.setColor(SkColorSetRGB(0x0, 0x0, 0xDD));
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foregroundPaint.setAntiAlias(true);
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canvas->save();
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2011-12-28 19:40:48 +00:00
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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target.inset(SkIntToScalar(-2), SkIntToScalar(-2));
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2011-12-21 14:27:14 +00:00
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canvas->drawRect(target, borderPaint);
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2011-12-28 19:40:48 +00:00
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target.inset(SkIntToScalar(2), SkIntToScalar(2));
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2011-12-21 14:27:14 +00:00
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canvas->drawRect(target, backgroundPaint);
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canvas->clipRect(target, SkRegion::kIntersect_Op, true);
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2011-12-28 19:40:48 +00:00
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target.inset(SkIntToScalar(-4), SkIntToScalar(-4));
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2011-12-21 14:27:14 +00:00
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canvas->drawRect(target, foregroundPaint);
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canvas->restore();
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}
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2014-02-13 17:14:46 +00:00
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static void draw_square(SkCanvas* canvas, int x, int y) {
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2011-12-21 14:27:14 +00:00
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SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 10 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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2014-02-13 17:14:46 +00:00
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static void draw_column(SkCanvas* canvas, int x, int y) {
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2011-12-21 14:27:14 +00:00
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SkRect target (SkRect::MakeWH(1 * SK_Scalar1, 10 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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2014-02-13 17:14:46 +00:00
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static void draw_bar(SkCanvas* canvas, int x, int y) {
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2011-12-21 14:27:14 +00:00
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SkRect target (SkRect::MakeWH(10 * SK_Scalar1, 1 * SK_Scalar1));
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draw(canvas, target, x, y);
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}
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2014-02-13 17:14:46 +00:00
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static void draw_rect_tests(SkCanvas* canvas) {
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2011-12-21 14:27:14 +00:00
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draw_square(canvas, 10, 10);
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draw_column(canvas, 30, 10);
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draw_bar(canvas, 10, 30);
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}
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/**
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Test a set of clipping problems discovered while writing blitAntiRect,
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and test all the code paths through the clipping blitters.
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Each region should show as a blue center surrounded by a 2px green
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border, with no red.
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*/
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2013-05-23 17:04:19 +00:00
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class AAClipGM : public skiagm::GM {
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2011-12-21 14:27:14 +00:00
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public:
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AAClipGM() {
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2012-09-18 15:14:33 +00:00
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2011-12-21 14:27:14 +00:00
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}
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protected:
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2015-03-26 01:17:31 +00:00
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SkString onShortName() override {
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2011-12-21 14:27:14 +00:00
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return SkString("aaclip");
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}
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2015-03-26 01:17:31 +00:00
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SkISize onISize() override {
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2014-04-14 15:02:19 +00:00
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return SkISize::Make(240, 120);
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2011-12-21 14:27:14 +00:00
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}
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2015-03-26 01:17:31 +00:00
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void onDraw(SkCanvas* canvas) override {
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2011-12-21 14:27:14 +00:00
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// Initial pixel-boundary-aligned draw
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draw_rect_tests(canvas);
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// Repeat 4x with .2, .4, .6, .8 px offsets
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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2011-12-28 19:40:48 +00:00
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canvas->translate(SkIntToScalar(50), 0);
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2011-12-21 14:27:14 +00:00
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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2011-12-28 19:40:48 +00:00
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canvas->translate(SkIntToScalar(50), 0);
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2011-12-21 14:27:14 +00:00
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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2011-12-28 19:40:48 +00:00
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canvas->translate(SkIntToScalar(50), 0);
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2011-12-21 14:27:14 +00:00
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draw_rect_tests(canvas);
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canvas->translate(SK_Scalar1 / 5, SK_Scalar1 / 5);
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2011-12-28 19:40:48 +00:00
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canvas->translate(SkIntToScalar(50), 0);
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2011-12-21 14:27:14 +00:00
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draw_rect_tests(canvas);
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}
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private:
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2013-05-23 17:04:19 +00:00
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typedef skiagm::GM INHERITED;
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2011-12-21 14:27:14 +00:00
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};
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2015-08-26 20:07:48 +00:00
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DEF_GM(return new AAClipGM;)
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2014-04-22 20:24:33 +00:00
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/////////////////////////////////////////////////////////////////////////
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#ifdef SK_BUILD_FOR_MAC
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static SkCanvas* make_canvas(const SkBitmap& bm) {
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const SkImageInfo& info = bm.info();
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if (info.bytesPerPixel() == 4) {
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return SkCanvas::NewRasterDirectN32(info.width(), info.height(),
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(SkPMColor*)bm.getPixels(),
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bm.rowBytes());
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} else {
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2015-08-26 20:07:48 +00:00
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return new SkCanvas(bm);
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2014-04-22 20:24:33 +00:00
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}
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}
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#include "SkCGUtils.h"
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static void test_image(SkCanvas* canvas, const SkImageInfo& info) {
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SkBitmap bm;
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bm.allocPixels(info);
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SkAutoTUnref<SkCanvas> newc(make_canvas(bm));
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if (info.isOpaque()) {
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bm.eraseColor(SK_ColorGREEN);
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} else {
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bm.eraseColor(0);
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}
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorBLUE);
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newc->drawCircle(50, 50, 49, paint);
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canvas->drawBitmap(bm, 10, 10);
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2014-04-23 03:04:11 +00:00
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2015-08-27 14:41:13 +00:00
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CGImageRef image = SkCreateCGImageRefWithColorspace(bm, nullptr);
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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SkBitmap bm2;
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SkCreateBitmapFromCGImage(&bm2, image);
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CGImageRelease(image);
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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canvas->drawBitmap(bm2, 10, 120);
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}
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class CGImageGM : public skiagm::GM {
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public:
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CGImageGM() {}
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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protected:
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2015-03-26 01:17:31 +00:00
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SkString onShortName() override {
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2014-04-22 20:24:33 +00:00
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return SkString("cgimage");
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}
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2014-04-23 03:04:11 +00:00
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2015-03-26 01:17:31 +00:00
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SkISize onISize() override {
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2014-04-22 20:24:33 +00:00
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return SkISize::Make(800, 250);
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}
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2014-04-23 03:04:11 +00:00
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2015-03-26 01:17:31 +00:00
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void onDraw(SkCanvas* canvas) override {
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2014-04-22 20:24:33 +00:00
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const struct {
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SkColorType fCT;
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SkAlphaType fAT;
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} rec[] = {
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{ kRGB_565_SkColorType, kOpaque_SkAlphaType },
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{ kRGBA_8888_SkColorType, kPremul_SkAlphaType },
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{ kRGBA_8888_SkColorType, kUnpremul_SkAlphaType },
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{ kRGBA_8888_SkColorType, kOpaque_SkAlphaType },
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{ kBGRA_8888_SkColorType, kPremul_SkAlphaType },
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{ kBGRA_8888_SkColorType, kUnpremul_SkAlphaType },
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{ kBGRA_8888_SkColorType, kOpaque_SkAlphaType },
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};
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) {
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SkImageInfo info = SkImageInfo::Make(100, 100, rec[i].fCT, rec[i].fAT);
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test_image(canvas, info);
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canvas->translate(info.width() + 10, 0);
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}
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}
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2014-04-23 03:04:11 +00:00
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2014-04-22 20:24:33 +00:00
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private:
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typedef skiagm::GM INHERITED;
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};
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2014-04-23 18:05:36 +00:00
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#if 0 // Disabled pending fix from reed@
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2015-08-26 20:07:48 +00:00
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DEF_GM( return new CGImageGM; )
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2014-04-23 18:05:36 +00:00
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#endif
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2014-04-22 20:24:33 +00:00
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#endif
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2015-04-23 00:38:23 +00:00
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///////////////////////////////////////////////////////////////////////////////////////////////////
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2015-11-07 13:29:00 +00:00
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// https://bug.skia.org/3716
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2015-04-23 00:38:23 +00:00
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class ClipCubicGM : public skiagm::GM {
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const SkScalar W = 100;
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const SkScalar H = 240;
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SkPath fVPath, fHPath;
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public:
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ClipCubicGM() {
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fVPath.moveTo(W, 0);
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fVPath.cubicTo(W, H-10, 0, 10, 0, H);
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2016-03-29 16:03:52 +00:00
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2015-04-23 00:38:23 +00:00
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SkMatrix pivot;
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pivot.setRotate(90, W/2, H/2);
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fVPath.transform(pivot, &fHPath);
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}
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protected:
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SkString onShortName() override {
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return SkString("clipcubic");
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}
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2016-03-29 16:03:52 +00:00
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2015-04-23 00:38:23 +00:00
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SkISize onISize() override {
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return SkISize::Make(400, 410);
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}
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void doDraw(SkCanvas* canvas, const SkPath& path) {
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SkPaint paint;
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paint.setAntiAlias(true);
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2016-03-29 16:03:52 +00:00
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2015-07-29 12:27:47 +00:00
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paint.setColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
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2015-04-23 00:38:23 +00:00
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canvas->drawPath(path, paint);
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2016-03-29 16:03:52 +00:00
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2015-04-23 00:38:23 +00:00
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paint.setColor(SK_ColorRED);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawPath(path, paint);
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}
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void drawAndClip(SkCanvas* canvas, const SkPath& path, SkScalar dx, SkScalar dy) {
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SkAutoCanvasRestore acr(canvas, true);
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SkRect r = SkRect::MakeXYWH(0, H/4, W, H/2);
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SkPaint paint;
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2015-07-29 12:27:47 +00:00
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paint.setColor(sk_tool_utils::color_to_565(0xFF8888FF));
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2015-04-23 00:38:23 +00:00
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canvas->drawRect(r, paint);
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this->doDraw(canvas, path);
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2016-03-29 16:03:52 +00:00
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2015-04-23 00:38:23 +00:00
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|
|
canvas->translate(dx, dy);
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|
|
|
|
|
|
|
canvas->drawRect(r, paint);
|
|
|
|
canvas->clipRect(r);
|
|
|
|
this->doDraw(canvas, path);
|
|
|
|
}
|
|
|
|
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
|
|
canvas->translate(80, 10);
|
|
|
|
this->drawAndClip(canvas, fVPath, 200, 0);
|
|
|
|
canvas->translate(0, 200);
|
|
|
|
this->drawAndClip(canvas, fHPath, 200, 0);
|
|
|
|
}
|
2016-03-29 16:03:52 +00:00
|
|
|
|
2015-04-23 00:38:23 +00:00
|
|
|
private:
|
|
|
|
typedef skiagm::GM INHERITED;
|
|
|
|
};
|
2015-08-26 20:07:48 +00:00
|
|
|
DEF_GM(return new ClipCubicGM;)
|