update sample to test stretching + and - amounds
git-svn-id: http://skia.googlecode.com/svn/trunk@2222 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleNinePatch.cpp b/samplecode/SampleNinePatch.cpp
index 689afd7..7dcbbce 100644
--- a/samplecode/SampleNinePatch.cpp
+++ b/samplecode/SampleNinePatch.cpp
@@ -12,24 +12,62 @@
#include "SkNinePatch.h"
#include "SkPaint.h"
#include "SkUnPreMultiply.h"
+#include "SkGpuDevice.h"
+
+static void make_bitmap(SkBitmap* bitmap, GrContext* ctx, SkIRect* center) {
+ SkDevice* dev;
+ SkCanvas canvas;
+
+ const int kFixed = 28;
+ const int kStretchy = 8;
+ const int kSize = 2*kFixed + kStretchy;
+
+ if (ctx) {
+ dev = new SkGpuDevice(ctx, SkBitmap::kARGB_8888_Config, kSize, kSize);
+ *bitmap = dev->accessBitmap(false);
+ } else {
+ bitmap->setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize);
+ bitmap->allocPixels();
+ dev = new SkDevice(*bitmap);
+ }
+
+ canvas.setDevice(dev)->unref();
+ canvas.clear(0);
+
+ SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
+ const SkScalar strokeWidth = SkIntToScalar(6);
+ const SkScalar radius = SkIntToScalar(kFixed) - strokeWidth/2;
+
+ center->setXYWH(kFixed, kFixed, kStretchy, kStretchy);
+
+ SkPaint paint;
+ paint.setAntiAlias(true);
+
+#if 0
+ r.inset(strokeWidth/2, strokeWidth/2);
+
+ paint.setColor(SK_ColorBLUE);
+ canvas.drawRoundRect(r, radius, radius, paint);
+ paint.setColor(SK_ColorRED);
+ paint.setStyle(SkPaint::kStroke_Style);
+ paint.setStrokeWidth(strokeWidth);
+ canvas.drawRoundRect(r, radius, radius, paint);
+#else
+ paint.setColor(0xFFFF0000);
+ canvas.drawRoundRect(r, radius, radius, paint);
+ r.setXYWH(SkIntToScalar(kFixed), 0, SkIntToScalar(kStretchy), SkIntToScalar(kSize));
+ paint.setColor(0x8800FF00);
+ canvas.drawRect(r, paint);
+ r.setXYWH(0, SkIntToScalar(kFixed), SkIntToScalar(kSize), SkIntToScalar(kStretchy));
+ paint.setColor(0x880000FF);
+ canvas.drawRect(r, paint);
+#endif
+}
+
class NinePatchView : public SampleView {
public:
- SkBitmap fBM;
-
- NinePatchView() {
- SkImageDecoder::DecodeFile("/skimages/btn_default_normal_disable.9.png", &fBM);
-
- // trim off the edge guide-lines
- SkBitmap tmp;
- SkIRect r;
- r.set(1, 1, fBM.width() - 1, fBM.height() - 1);
- fBM.extractSubset(&tmp, r);
- fBM.swap(tmp);
-
- fX = SkIntToScalar(fBM.width());
- fY = 0;
- }
+ NinePatchView() {}
protected:
// overrides from SkEventSink
@@ -40,75 +78,48 @@
}
return this->INHERITED::onQuery(evt);
}
-
- virtual void onDrawBackground(SkCanvas* canvas) {
- SkPaint p;
- p.setDither(true);
- p.setColor(0xFF909090);
- canvas->drawPaint(p);
- }
- static void test_rects(SkCanvas* canvas, const SkBitmap& bm, const SkPaint* paint) {
- static const SkIRect src[] = {
- { 0, 0, 18, 34 },
- { 18, 0, 19, 34 },
- { 19, 0, 36, 34 },
- { 0, 34, 18, 35 },
- { 18, 34, 19, 35 },
- { 19, 34, 36, 35 },
- { 0, 35, 18, 72 },
- { 18, 35, 19, 72 },
- { 19, 35, 36, 72 },
- };
- static const SkRect dst[] = {
- { 0, 0, 18, 34 },
- { 18, 0, 283, 34 },
- { 283, 0, 300, 34 },
- { 0, 34, 18, 163 },
- { 18, 34, 283, 163 },
- { 283, 34, 300, 163 },
- { 0, 163, 18, 200 },
- { 18, 163, 283, 200 },
- { 283, 163, 300, 200 },
- };
- for (size_t i = 0; i < SK_ARRAY_COUNT(src); i++) {
- canvas->drawBitmapRect(bm, &src[i], dst[i], paint);
- }
+ static void drawNine(SkCanvas* canvas, const SkRect& dst, const SkBitmap& bm,
+ const SkIRect& center, const SkPaint* paint) {
+ SkIRect margin;
+ margin.set(center.fLeft, center.fTop, bm.width() - center.fRight,
+ bm.height() - center.fBottom);
+ SkNinePatch::DrawNine(canvas, dst, bm, margin, paint);
}
virtual void onDrawContent(SkCanvas* canvas) {
- canvas->drawBitmap(fBM, 0, 0);
-
- SkIRect margins;
- SkRect dst;
- int d = 25;
-
- margins.set(d, d, d, d);
- margins.fLeft = fBM.width()/2 - 1;
- margins.fTop = fBM.height()/2 - 1;
- margins.fRight = fBM.width() - margins.fLeft - 1;
- margins.fBottom = fBM.height() - margins.fTop - 1;
+ SkBitmap bm;
+ SkIRect center;
+ make_bitmap(&bm, SampleCode::GetGr(), ¢er);
- // canvas->translate(fX/5, fY/5);
- canvas->translate(0, 76);
+ // amount of bm that should not be stretched (unless we have to)
+ const SkScalar fixed = SkIntToScalar(bm.width() - center.width());
- dst.set(0, 0, SkIntToScalar(200), SkIntToScalar(200));
-
+ const SkTSize<SkScalar> size[] = {
+ { fixed * 4 / 5, fixed * 4 / 5 }, // shrink in both axes
+ { fixed * 4 / 5, fixed * 4 }, // shrink in X
+ { fixed * 4, fixed * 4 / 5 }, // shrink in Y
+ { fixed * 4, fixed * 4 }
+ };
+
+ canvas->drawBitmap(bm, SkIntToScalar(10), SkIntToScalar(10), NULL);
+
+ SkScalar x = SkIntToScalar(100);
+ SkScalar y = SkIntToScalar(100);
+
SkPaint paint;
- paint.setAntiAlias(false);
- paint.setDither(true);
- paint.setFilterBitmap(false);
- // SkNinePatch::DrawNine(canvas, dst, fBM, margins, &paint);
- test_rects(canvas, fBM, &paint);
+ paint.setFilterBitmap(true);
+
+ for (int iy = 0; iy < 2; ++iy) {
+ for (int ix = 0; ix < 2; ++ix) {
+ int i = ix * 2 + iy;
+ SkRect r = SkRect::MakeXYWH(x + ix * fixed, y + iy * fixed,
+ size[i].width(), size[i].height());
+ drawNine(canvas, r, bm, center, &paint);
+ }
+ }
}
- virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
- fX = x / 1.5f;
- fY = y / 1.5f;
- fX = x; fY = y;
- this->inval(NULL);
- return this->INHERITED::onFindClickHandler(x, y);
- }
private:
SkScalar fX, fY;
typedef SampleView INHERITED;