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      1 /*
      2 * Copyright 2016 Google Inc.
      3 *
      4 * Use of this source code is governed by a BSD-style license that can be
      5 * found in the LICENSE file.
      6 */
      7 
      8 #include "SampleSlide.h"
      9 
     10 #include "SkCanvas.h"
     11 #include "SkCommonFlags.h"
     12 #include "SkOSFile.h"
     13 #include "SkStream.h"
     14 
     15 using namespace sk_app;
     16 
     17 SampleSlide::SampleSlide(const SampleFactory factory)
     18     : fSampleFactory(factory)
     19     , fClick(nullptr) {
     20     sk_sp<Sample> sample(factory());
     21     Sample::RequestTitle(sample.get(), &fName);
     22 }
     23 
     24 SampleSlide::~SampleSlide() { delete fClick; }
     25 
     26 SkISize SampleSlide::getDimensions() const  {
     27     return SkISize::Make(SkScalarCeilToInt(fSample->width()), SkScalarCeilToInt(fSample->height()));
     28 }
     29 
     30 void SampleSlide::draw(SkCanvas* canvas) {
     31     SkASSERT(fSample);
     32     fSample->draw(canvas);
     33 }
     34 
     35 void SampleSlide::load(SkScalar winWidth, SkScalar winHeight) {
     36     fSample.reset(fSampleFactory());
     37     fSample->setSize(winWidth, winHeight);
     38 }
     39 
     40 void SampleSlide::unload() {
     41     fSample.reset();
     42 }
     43 
     44 bool SampleSlide::onChar(SkUnichar c) {
     45     if (!fSample) {
     46         return false;
     47     }
     48     Sample::Event evt(Sample::kCharEvtName);
     49     evt.setFast32(c);
     50     return fSample->doQuery(&evt);
     51 }
     52 
     53 bool SampleSlide::onMouse(SkScalar x, SkScalar y, Window::InputState state,
     54                           uint32_t modifiers) {
     55     // map to Sample::Click modifiers
     56     unsigned modifierKeys = 0;
     57     modifierKeys |= (modifiers & Window::kShift_ModifierKey) ? Sample::Click::kShift_ModifierKey : 0;
     58     modifierKeys |= (modifiers & Window::kControl_ModifierKey) ? Sample::Click::kControl_ModifierKey : 0;
     59     modifierKeys |= (modifiers & Window::kOption_ModifierKey) ? Sample::Click::kOption_ModifierKey : 0;
     60     modifierKeys |= (modifiers & Window::kCommand_ModifierKey) ? Sample::Click::kCommand_ModifierKey : 0;
     61 
     62     bool handled = false;
     63     switch (state) {
     64         case Window::kDown_InputState: {
     65             delete fClick;
     66             fClick = fSample->findClickHandler(SkIntToScalar(x), SkIntToScalar(y), modifierKeys);
     67             if (fClick) {
     68                 Sample::DoClickDown(fClick, x, y, modifierKeys);
     69                 handled = true;
     70             }
     71             break;
     72         }
     73         case Window::kMove_InputState: {
     74             if (fClick) {
     75                 Sample::DoClickMoved(fClick, x, y, modifierKeys);
     76                 handled = true;
     77             }
     78             break;
     79         }
     80         case Window::kUp_InputState: {
     81             if (fClick) {
     82                 Sample::DoClickUp(fClick, x, y, modifierKeys);
     83                 delete fClick;
     84                 fClick = nullptr;
     85                 handled = true;
     86             }
     87             break;
     88         }
     89     }
     90 
     91     return handled;
     92 }
     93