ImGui color space controls

Adds radio buttons for switching among legacy, sRGB and F16.
Also adds a list of primaries you can pick from, as well as
a gamut diagram showing the primaries. The primaries can be
dragged around to alter the working space.

BUG=skia:

Change-Id: Ibd8c67dfe085594c0d7462f0efe4d79d73999919
Reviewed-on: https://skia-review.googlesource.com/8311
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/tools/viewer/Viewer.h b/tools/viewer/Viewer.h
index f4847e5c79..b17bd250db 100644
--- a/tools/viewer/Viewer.h
+++ b/tools/viewer/Viewer.h
@@ -33,7 +33,7 @@ public:
 private:
     void initSlides();
     void updateTitle();
-    void setColorMode(SkColorType, sk_sp<SkColorSpace>);
+    void setColorMode(SkColorType, bool colorManaged);
     void setStartupSlide();
     void setupCurrentSlide(int previousSlide);
     void listNames();
@@ -64,6 +64,7 @@ private:
     bool                   fRefresh; // whether to continuously refresh for measuring render time
 
     SkPaint                fImGuiFontPaint;
+    SkPaint                fImGuiGamutPaint;
     bool                   fShowImGuiDebugWindow;
     bool                   fShowImGuiTestWindow;
 
@@ -74,7 +75,8 @@ private:
 
     // Color properties for slide rendering
     SkColorType            fColorType;
-    sk_sp<SkColorSpace>    fColorSpace;
+    bool                   fColorManaged;
+    SkColorSpacePrimaries  fColorSpacePrimaries;
 
     // transform data
     SkScalar               fZoomCenterX;