From c9e7f9c44874f2013c032f798f9599e39809954f Mon Sep 17 00:00:00 2001
From: Jim Van Verth <jvanverth@google.com>
Date: Thu, 2 Nov 2017 09:46:49 -0400
Subject: Add sample mouse support to Viewer

Bug: skia:6830
Change-Id: I1a6bb781465a29cec4946462e234d63c48693454
Reviewed-on: https://skia-review.googlesource.com/66543
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
---
 tools/viewer/SampleSlide.cpp | 49 ++++++++++++++++++++++++++++++++++++++++++--
 tools/viewer/SampleSlide.h   |  3 +++
 tools/viewer/Slide.h         |  4 ++++
 tools/viewer/Viewer.cpp      | 32 +++++++++++++++--------------
 4 files changed, 71 insertions(+), 17 deletions(-)

(limited to 'tools')

diff --git a/tools/viewer/SampleSlide.cpp b/tools/viewer/SampleSlide.cpp
index 93a495eb8c..68dab9290f 100644
--- a/tools/viewer/SampleSlide.cpp
+++ b/tools/viewer/SampleSlide.cpp
@@ -12,13 +12,17 @@
 #include "SkOSFile.h"
 #include "SkStream.h"
 
-SampleSlide::SampleSlide(const SkViewFactory* factory) : fViewFactory(factory) {
+using namespace sk_app;
+
+SampleSlide::SampleSlide(const SkViewFactory* factory)
+    : fViewFactory(factory)
+    , fClick(nullptr) {
     SkView* view = (*factory)();
     SampleCode::RequestTitle(view, &fName);
     view->unref();
 }
 
-SampleSlide::~SampleSlide() {}
+SampleSlide::~SampleSlide() { delete fClick; }
 
 void SampleSlide::draw(SkCanvas* canvas) {
     SkASSERT(fView);
@@ -45,6 +49,47 @@ bool SampleSlide::onChar(SkUnichar c) {
     return fView->doQuery(&evt);
 }
 
+bool SampleSlide::onMouse(SkScalar x, SkScalar y, Window::InputState state,
+                          uint32_t modifiers) {
+    // map to SkView modifiers
+    unsigned modifierKeys = 0;
+    modifierKeys |= (state & Window::kShift_ModifierKey) ? kShift_SkModifierKey : 0;
+    modifierKeys |= (state & Window::kControl_ModifierKey) ? kControl_SkModifierKey : 0;
+    modifierKeys |= (state & Window::kOption_ModifierKey) ? kOption_SkModifierKey : 0;
+    modifierKeys |= (state & Window::kCommand_ModifierKey) ? kCommand_SkModifierKey : 0;
+
+    bool handled = false;
+    switch (state) {
+        case Window::kDown_InputState: {
+            delete fClick;
+            fClick = fView->findClickHandler(SkIntToScalar(x), SkIntToScalar(y), modifierKeys);
+            if (fClick) {
+                SkView::DoClickDown(fClick, x, y, modifierKeys);
+                handled = true;
+            }
+            break;
+        }
+        case Window::kMove_InputState: {
+            if (fClick) {
+                SkView::DoClickMoved(fClick, x, y, modifierKeys);
+                handled = true;
+            }
+            break;
+        }
+        case Window::kUp_InputState: {
+            if (fClick) {
+                SkView::DoClickUp(fClick, x, y, modifierKeys);
+                delete fClick;
+                fClick = nullptr;
+                handled = true;
+            }
+            break;
+        }
+    }
+
+    return handled;
+}
+
 #if defined(SK_BUILD_FOR_ANDROID)
 // these are normally defined in SkOSWindow_unix, but we don't
 // want to include that
diff --git a/tools/viewer/SampleSlide.h b/tools/viewer/SampleSlide.h
index 24325c91a0..4b91f39f74 100644
--- a/tools/viewer/SampleSlide.h
+++ b/tools/viewer/SampleSlide.h
@@ -27,10 +27,13 @@ public:
     }
 
     bool onChar(SkUnichar c) override;
+    bool onMouse(SkScalar x, SkScalar y, sk_app::Window::InputState state,
+                 uint32_t modifiers) override;
 
 private:
     const SkViewFactory*   fViewFactory;
     sk_sp<SkView>          fView;
+    SkView::Click*         fClick;
 };
 
 #endif
diff --git a/tools/viewer/Slide.h b/tools/viewer/Slide.h
index 9ec7a3dbe1..e23a2eb78d 100644
--- a/tools/viewer/Slide.h
+++ b/tools/viewer/Slide.h
@@ -11,6 +11,7 @@
 #include "SkRefCnt.h"
 #include "SkSize.h"
 #include "SkString.h"
+#include "sk_app/Window.h"
 
 class SkCanvas;
 class SkAnimTimer;
@@ -29,9 +30,12 @@ public:
     virtual void unload() {}
 
     virtual bool onChar(SkUnichar c) { return false; }
+    virtual bool onMouse(SkScalar x, SkScalar y, sk_app::Window::InputState state,
+                         uint32_t modifiers) { return false; }
 
     SkString getName() { return fName; }
 
+
 protected:
     SkString    fName;
 };
diff --git a/tools/viewer/Viewer.cpp b/tools/viewer/Viewer.cpp
index 85b78baf8f..2355d985b3 100644
--- a/tools/viewer/Viewer.cpp
+++ b/tools/viewer/Viewer.cpp
@@ -897,24 +897,26 @@ bool Viewer::onTouch(intptr_t owner, Window::InputState state, float x, float y)
 }
 
 bool Viewer::onMouse(float x, float y, Window::InputState state, uint32_t modifiers) {
-    if (GestureDevice::kTouch == fGestureDevice) {
-        return false;
-    }
-    switch (state) {
-        case Window::kUp_InputState: {
-            fGesture.touchEnd(nullptr);
-            break;
-        }
-        case Window::kDown_InputState: {
-            fGesture.touchBegin(nullptr, x, y);
-            break;
+    if (!fSlides[fCurrentSlide]->onMouse(x, y, state, modifiers)) {
+        if (GestureDevice::kTouch == fGestureDevice) {
+            return false;
         }
-        case Window::kMove_InputState: {
-            fGesture.touchMoved(nullptr, x, y);
-            break;
+        switch (state) {
+            case Window::kUp_InputState: {
+                fGesture.touchEnd(nullptr);
+                break;
+            }
+            case Window::kDown_InputState: {
+                fGesture.touchBegin(nullptr, x, y);
+                break;
+            }
+            case Window::kMove_InputState: {
+                fGesture.touchMoved(nullptr, x, y);
+                break;
+            }
         }
+        fGestureDevice = fGesture.isBeingTouched() ? GestureDevice::kMouse : GestureDevice::kNone;
     }
-    fGestureDevice = fGesture.isBeingTouched() ? GestureDevice::kMouse : GestureDevice::kNone;
     fWindow->inval();
     return true;
 }
-- 
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