Add Softkey UIState to Viewer

We can use this to simulate any key/command on Android UI.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2035923002

Review-Url: https://codereview.chromium.org/2035923002

2 files changed, 26 insertions, 0 deletions

diff --git a/tools/viewer/sk_app/CommandSet.cpp b/tools/viewer/sk_app/CommandSet.cpp
index e426eaab21..4805e6aafe 100644
--- a/tools/viewer/sk_app/CommandSet.cpp
+++ b/tools/viewer/sk_app/CommandSet.cpp
@@ -71,6 +71,16 @@ bool CommandSet::onChar(SkUnichar c, uint32_t modifiers) {
     return false;
 }
 
+bool CommandSet::onSoftkey(const SkString& softkey) {
+    for (const Command& cmd : fCommands) {
+        if (cmd.getSoftkeyString().equals(softkey)) {
+            cmd.fFunction();
+            return true;
+        }
+    }
+    return false;
+}
+
 void CommandSet::addCommand(SkUnichar c, const char* group, const char* description,
                             std::function<void(void)> function) {
     fCommands.push_back(Command(c, group, description, function));
@@ -154,4 +164,12 @@ void CommandSet::drawHelp(SkCanvas* canvas) {
     }
 }
 
+std::vector<SkString> CommandSet::getCommandsAsSoftkeys() const {
+    std::vector<SkString> result;
+    for(const Command& command : fCommands) {
+        result.push_back(command.getSoftkeyString());
+    }
+    return result;
+}
+
 }   // namespace sk_app
diff --git a/tools/viewer/sk_app/CommandSet.h b/tools/viewer/sk_app/CommandSet.h
index 5e6373c935..4cbb367e01 100644
--- a/tools/viewer/sk_app/CommandSet.h
+++ b/tools/viewer/sk_app/CommandSet.h
@@ -12,6 +12,7 @@
 #include "Window.h"
 
 #include <functional>
+#include <vector>
 
 class SkCanvas;
 
@@ -40,6 +41,7 @@ public:
     void attach(Window* window);
     bool onKey(sk_app::Window::Key key, sk_app::Window::InputState state, uint32_t modifiers);
     bool onChar(SkUnichar, uint32_t modifiers);
+    bool onSoftkey(const SkString& softkey);
 
     void addCommand(SkUnichar c, const char* group, const char* description,
                     std::function<void(void)> function);
@@ -48,6 +50,8 @@ public:
 
     void drawHelp(SkCanvas* canvas);
 
+    std::vector<SkString> getCommandsAsSoftkeys() const;
+
 private:
     struct Command {
         enum CommandType {
@@ -86,6 +90,10 @@ private:
         SkString fGroup;
         SkString fDescription;
         std::function<void(void)> fFunction;
+
+        SkString getSoftkeyString() const {
+            return SkStringPrintf("%s (%s)", fKeyName.c_str(), fDescription.c_str());
+        }
     };
 
     static bool compareCommandKey(const Command& first, const Command& second);