| /* |
| * 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 "SampleCode.h" |
| |
| #include "SkCanvas.h" |
| #include "SkView.h" |
| |
| namespace { |
| |
| const int N = 8; |
| const SkScalar kWidth = SkIntToScalar(640); |
| const SkScalar kHeight = SkIntToScalar(480); |
| const char gIsOverview[] = "is-overview"; |
| |
| } // namespace |
| |
| class OverView : public SkView { |
| public: |
| OverView(int count, const SkViewFactory* factories[]); |
| virtual ~OverView(); |
| |
| protected: |
| // Overridden from SkEventSink: |
| virtual bool onEvent(const SkEvent&) SK_OVERRIDE; |
| virtual bool onQuery(SkEvent* evt) SK_OVERRIDE { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "Overview"); |
| return true; |
| } |
| if (evt->isType(gIsOverview)) { |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| |
| // Overridden from SkView: |
| virtual void onSizeChange() SK_OVERRIDE; |
| virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| canvas->drawColor(SK_ColorLTGRAY); |
| } |
| |
| virtual SkCanvas* beforeChildren(SkCanvas*) SK_OVERRIDE; |
| |
| virtual bool onSendClickToChildren(SkScalar x, SkScalar y) SK_OVERRIDE { |
| return false; |
| } |
| |
| virtual Click* onFindClickHandler(SkScalar x, SkScalar y) SK_OVERRIDE { |
| int ix = (int)(SkScalarDiv(x * N, kWidth)); |
| int iy = (int)(SkScalarDiv(y * N, kHeight)); |
| if (ix >= 0 && iy >= 0) { |
| SkEvent evt("set-curr-index"); |
| evt.setFast32(iy * N + ix); |
| this->sendEventToParents(evt); |
| } |
| return NULL; |
| } |
| |
| private: |
| int fCount; |
| const SkViewFactory** fFactories; |
| |
| typedef SkView INHERITED; |
| }; |
| |
| SkView* create_overview(int count, const SkViewFactory* factories[]) { |
| return SkNEW_ARGS(OverView, (count, factories)); |
| } |
| |
| bool is_overview(SkView* view) { |
| SkEvent isOverview(gIsOverview); |
| return view->doQuery(&isOverview); |
| } |
| |
| OverView::OverView(int count, const SkViewFactory* factories[]) { |
| fCount = count; |
| fFactories = factories; |
| } |
| |
| OverView::~OverView() { |
| } |
| |
| bool OverView::onEvent(const SkEvent& evt) { |
| return this->INHERITED::onEvent(evt); |
| } |
| |
| void OverView::onSizeChange() { |
| this->detachAllChildren(); |
| |
| SkScalar locX = 0; |
| SkScalar locY = 0; |
| for (int i = 0; i < fCount; i++) { |
| SkView* view = (*fFactories[i])(); |
| view->setVisibleP(true); |
| this->attachChildToBack(view)->unref(); |
| view->setLoc(locX, locY); |
| view->setSize(kWidth, kHeight); |
| locX += kWidth; |
| if ((i % N) == N - 1) { |
| locY += kHeight; |
| locX = 0; |
| } |
| } |
| } |
| |
| SkCanvas* OverView::beforeChildren(SkCanvas* canvas) { |
| canvas->scale(SK_Scalar1 / N, SK_Scalar1 / N); |
| return canvas; |
| } |