| /* |
| * 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 "OverView.h" |
| #include "SampleCode.h" |
| #include "SkCanvas.h" |
| #include "SkView.h" |
| |
| static const char gIsOverview[] = "is-overview"; |
| |
| static int to_lower(int c) { |
| if ('A' <= c && c <= 'Z') { |
| c = c - 'A' + 'a'; |
| } |
| return c; |
| } |
| |
| static void make_lc(SkString* str) { |
| char* ptr = str->writable_str(); |
| while (*ptr) { |
| *ptr = to_lower(*ptr); |
| ptr += 1; |
| } |
| } |
| |
| static bool case_insensitive_find(const SkString& base, const SkString& sub) { |
| SkString lcBase(base); |
| SkString lcSub(sub); |
| make_lc(&lcBase); |
| make_lc(&lcSub); |
| return lcBase.find(lcSub.c_str()) >= 0; |
| } |
| |
| static bool draw_this_name(const SkString& name, const SkString& filter) { |
| if (filter.isEmpty()) { |
| return true; |
| } |
| return case_insensitive_find(name, filter); |
| } |
| |
| class OverView : public SkView { |
| public: |
| OverView(int count, const SkViewFactory* factories[]); |
| virtual ~OverView(); |
| |
| protected: |
| bool onEvent(const SkEvent&) override; |
| bool onQuery(SkEvent* evt) override { |
| if (SampleCode::TitleQ(*evt)) { |
| SampleCode::TitleR(evt, "Overview"); |
| return true; |
| } |
| if (evt->isType(gIsOverview)) { |
| return true; |
| } |
| SkUnichar uni; |
| if (SampleCode::CharQ(*evt, &uni)) { |
| if (uni >= ' ') { |
| fMatchStr.appendUnichar(uni); |
| } |
| this->inval(nullptr); |
| return true; |
| } |
| return this->INHERITED::onQuery(evt); |
| } |
| |
| void onDraw(SkCanvas* canvas) override; |
| |
| bool onSendClickToChildren(SkScalar x, SkScalar y, unsigned modi) override { |
| return false; |
| } |
| |
| Click* onFindClickHandler(SkScalar cx, SkScalar cy, unsigned modi) override { |
| const SkRect crect = SkRect::MakeXYWH(cx - 0.5f, cy - 0.5f, 1, 1); |
| SkPoint loc = this->start(); |
| for (int i = 0; i < fCount; ++i) { |
| if (draw_this_name(fNames[i], fMatchStr)) { |
| if (this->bounds(loc).intersects(crect)) { |
| SkEvent evt("set-curr-index"); |
| evt.setFast32(i); |
| this->sendEventToParents(evt); |
| break; |
| } |
| this->next(&loc); |
| } |
| } |
| return nullptr; |
| } |
| |
| private: |
| int fCount; |
| const SkViewFactory** fFactories; |
| SkString* fNames; |
| SkString fMatchStr; |
| SkPaint fNamePaint; |
| SkPaint::FontMetrics fNameMetrics; |
| SkScalar fNameW; |
| SkScalar fNameH; |
| |
| SkRect bounds(const SkPoint& loc) const { |
| return SkRect::MakeXYWH(loc.x(), loc.y() + fNameMetrics.fAscent, fNameW, fNameH); |
| } |
| |
| SkPoint start() const { |
| return SkPoint::Make(10, -fNameMetrics.fTop); |
| } |
| |
| void next(SkPoint* loc) const { |
| loc->fY += fNameH; |
| if (loc->fY > this->height() - fNameMetrics.fBottom) { |
| loc->fY = -fNameMetrics.fTop; |
| loc->fX += fNameW; |
| } |
| } |
| |
| typedef SkView INHERITED; |
| }; |
| |
| SkView* create_overview(int count, const SkViewFactory* factories[]) { |
| return new 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; |
| |
| fNames = new SkString[count]; |
| for (int i = 0; i < count; ++i) { |
| SkView* view = (*fFactories[i])(); |
| if (view) { |
| (void)SampleCode::RequestTitle(view, &fNames[i]); |
| if (0 == fNames[i].find("GM:")) { |
| fNames[i].remove(0, 3); |
| } |
| } |
| } |
| |
| fNamePaint.setAntiAlias(true); |
| fNamePaint.setTextSize(12); |
| fNameW = 160; |
| fNameH = fNamePaint.getFontMetrics(&fNameMetrics); |
| } |
| |
| OverView::~OverView() { |
| delete[] fNames; |
| } |
| |
| bool OverView::onEvent(const SkEvent& evt) { |
| return this->INHERITED::onEvent(evt); |
| } |
| |
| void OverView::onDraw(SkCanvas* canvas) { |
| SkPaint paint; |
| paint.setColor(0xFFF8F8F8); |
| canvas->drawPaint(paint); |
| |
| SkPoint loc = this->start(); |
| for (int i = 0; i < fCount; ++i) { |
| if (draw_this_name(fNames[i], fMatchStr)) { |
| canvas->drawRect(this->bounds(loc), paint); |
| canvas->drawText(fNames[i].c_str(), fNames[i].size(), loc.x(), loc.y(), fNamePaint); |
| this->next(&loc); |
| } |
| } |
| } |