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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 "SkKey.h"
     13 #include "SkOSFile.h"
     14 #include "SkStream.h"
     15 
     16 using namespace sk_app;
     17 
     18 SampleSlide::SampleSlide(const SkViewFactory* factory)
     19     : fViewFactory(factory)
     20     , fClick(nullptr) {
     21     SkView* view = (*factory)();
     22     SampleCode::RequestTitle(view, &fName);
     23     view->unref();
     24 }
     25 
     26 SampleSlide::~SampleSlide() { delete fClick; }
     27 
     28 void SampleSlide::draw(SkCanvas* canvas) {
     29     SkASSERT(fView);
     30     fView->draw(canvas);
     31 }
     32 
     33 void SampleSlide::load(SkScalar winWidth, SkScalar winHeight) {
     34     fView.reset((*fViewFactory)());
     35     fView->setVisibleP(true);
     36     fView->setClipToBounds(false);
     37     fView->setSize(winWidth, winHeight);
     38 }
     39 
     40 void SampleSlide::unload() {
     41     fView.reset();
     42 }
     43 
     44 bool SampleSlide::onChar(SkUnichar c) {
     45     if (!fView) {
     46         return false;
     47     }
     48     SkEvent evt(gCharEvtName);
     49     evt.setFast32(c);
     50     return fView->doQuery(&evt);
     51 }
     52 
     53 bool SampleSlide::onMouse(SkScalar x, SkScalar y, Window::InputState state,
     54                           uint32_t modifiers) {
     55     // map to SkView modifiers
     56     unsigned modifierKeys = 0;
     57     modifierKeys |= (modifiers & Window::kShift_ModifierKey) ? kShift_SkModifierKey : 0;
     58     modifierKeys |= (modifiers & Window::kControl_ModifierKey) ? kControl_SkModifierKey : 0;
     59     modifierKeys |= (modifiers & Window::kOption_ModifierKey) ? kOption_SkModifierKey : 0;
     60     modifierKeys |= (modifiers & Window::kCommand_ModifierKey) ? kCommand_SkModifierKey : 0;
     61 
     62     bool handled = false;
     63     switch (state) {
     64         case Window::kDown_InputState: {
     65             delete fClick;
     66             fClick = fView->findClickHandler(SkIntToScalar(x), SkIntToScalar(y), modifierKeys);
     67             if (fClick) {
     68                 SkView::DoClickDown(fClick, x, y, modifierKeys);
     69                 handled = true;
     70             }
     71             break;
     72         }
     73         case Window::kMove_InputState: {
     74             if (fClick) {
     75                 SkView::DoClickMoved(fClick, x, y, modifierKeys);
     76                 handled = true;
     77             }
     78             break;
     79         }
     80         case Window::kUp_InputState: {
     81             if (fClick) {
     82                 SkView::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