Add sRGB mode toggle to Viewer.

tools/viewer/Viewer.cpp

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "Viewer.h"
 
 #include "GMSlide.h"
@@ skipping 55 matching lines @@
 
     SkDebugf("Command line arguments: ");
     for (int i = 1; i < argc; ++i) {
         SkDebugf("%s ", argv[i]);
     }
     SkDebugf("\n");
 
     SkCommandLineFlags::Parse(argc, argv);
 
     fWindow = Window::CreateNativeWindow(platformData);
-    fWindow->attach(Window::kVulkan_BackendType, 0);
+    fWindow->attach(Window::kVulkan_BackendType, DisplayParams());
 
     // register callbacks
     fWindow->registerKeyFunc(on_key_handler, this);
     fWindow->registerCharFunc(on_char_handler, this);
     fWindow->registerPaintFunc(on_paint_handler, this);
 
     // set up slides
     this->initSlides();
 
     fAnimTimer.run();
@@ skipping 55 matching lines @@
         }
     }
 }
 
 
 Viewer::~Viewer() {
     fWindow->detach();
     delete fWindow;
 }
 
-void Viewer::setupCurrentSlide(int previousSlide) {
+void Viewer::updateTitle() {
     SkString title("Viewer: ");
     title.append(fSlides[fCurrentSlide]->getName());
+    if (kSRGB_SkColorProfileType == fWindow->getDisplayParams().fProfileType) {
+        title.append(" sRGB");
+    }
+    fWindow->setTitle(title.c_str());
+}
+
+void Viewer::setupCurrentSlide(int previousSlide) {
+    this->updateTitle();
     fSlides[fCurrentSlide]->load();
     if (previousSlide >= 0) {
         fSlides[previousSlide]->unload();
     }
-    fWindow->setTitle(title.c_str());
     fWindow->inval();
 }
 
 #define MAX_ZOOM_LEVEL  8
 #define MIN_ZOOM_LEVEL  -8
 
 void Viewer::changeZoomLevel(float delta) {
     fZoomLevel += delta;
     if (fZoomLevel > 0) {
         fZoomLevel = SkMinScalar(fZoomLevel, MAX_ZOOM_LEVEL);
@@ skipping 43 matching lines @@
                 setupCurrentSlide(previousSlide);
                 return true;
             }
 
             case Window::kLeft_Key: {
                 int previousSlide = fCurrentSlide;
                 fCurrentSlide--;
                 if (fCurrentSlide < 0) {
                     fCurrentSlide = fSlides.count() - 1;
                 }
-                SkString title("Viewer: ");
-                title.append(fSlides[fCurrentSlide]->getName());
-                fWindow->setTitle(title.c_str());
                 setupCurrentSlide(previousSlide);
                 return true;
             }
 
             case Window::kUp_Key: {
                 this->changeZoomLevel(1.f / 32.f);
                 fWindow->inval();
                 return true;
             }
 
             case Window::kDown_Key: {
                 this->changeZoomLevel(-1.f / 32.f);
                 fWindow->inval();
                 return true;
             }
 
             default:
                 break;
         }
     }
 
     return false;
 }
 
 bool Viewer::onChar(SkUnichar c, uint32_t modifiers) {
-    if ('s' == c) {
-        fDisplayStats = !fDisplayStats;
-        return true;
+    switch (c) {
+        case 's':
+            fDisplayStats = !fDisplayStats;
+            return true;
+        case 'c':
+            DisplayParams params = fWindow->getDisplayParams();
+            params.fProfileType = (kLinear_SkColorProfileType == params.fProfileType)
+                ? kSRGB_SkColorProfileType : kLinear_SkColorProfileType;
+            fWindow->setDisplayParams(params);
+            this->updateTitle();
+            fWindow->inval();
+            return true;
     }
 
     return false;
 }
 
 void Viewer::onPaint(SkCanvas* canvas) {
 
     int count = canvas->save();
 
     if (fWindow->supportsContentRect()) {
@@ skipping 73 matching lines @@
     // Record measurements
     fMeasurements[fCurrentMeasurement++] = ms;
     fCurrentMeasurement &= (kMeasurementCount - 1);  // fast mod
     SkASSERT(fCurrentMeasurement < kMeasurementCount);
 
     fAnimTimer.updateTime();
     if (fSlides[fCurrentSlide]->animate(fAnimTimer) || fDisplayStats) {
         fWindow->inval();
     }
 }