Remove SampleApp and convert HelloWorld to sk_app

There is still a large amount of views code that could be trimmed down,
but which is used to implement samples (in viewer). Seemed simpler to
remove some of this code in pieces.

Bug: skia:
Change-Id: Ia3415060d03c8de604a154e3dc38379b754daab6
Reviewed-on: https://skia-review.googlesource.com/72801
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/tools/sk_app/WindowContext.h b/tools/sk_app/WindowContext.h
new file mode 100644
index 0000000000..cd4c357e20
--- /dev/null
+++ b/tools/sk_app/WindowContext.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef WindowContext_DEFINED
+#define WindowContext_DEFINED
+
+#include "DisplayParams.h"
+#include "GrContext.h"
+#include "GrTypes.h"
+#include "SkRefCnt.h"
+#include "SkSurfaceProps.h"
+
+class SkSurface;
+class GrRenderTarget;
+
+namespace sk_app {
+
+class WindowContext {
+public:
+    WindowContext(const DisplayParams& params)
+        : fContext(nullptr)
+        , fDisplayParams(params)
+        , fSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType)
+        , fSampleCount(0)
+        , fStencilBits(0) {}
+
+    virtual ~WindowContext() {}
+
+    virtual sk_sp<SkSurface> getBackbufferSurface() = 0;
+
+    virtual void swapBuffers() = 0;
+
+    virtual bool isValid() = 0;
+
+    virtual void resize(int w, int h) = 0;
+
+    const DisplayParams& getDisplayParams() { return fDisplayParams; }
+    virtual void setDisplayParams(const DisplayParams& params) = 0;
+
+    SkSurfaceProps getSurfaceProps() const { return fSurfaceProps; }
+    void setSurfaceProps(const SkSurfaceProps& props) {
+        fSurfaceProps = props;
+    }
+
+    virtual GrBackendContext getBackendContext() = 0;
+    GrContext* getGrContext() const { return fContext.get(); }
+
+    int width() const { return fWidth; }
+    int height() const { return fHeight; }
+    int sampleCount() const { return fSampleCount; }
+    int stencilBits() const { return fStencilBits; }
+
+protected:
+    virtual bool isGpuContext() { return true;  }
+
+    sk_sp<GrContext>        fContext;
+
+    int               fWidth;
+    int               fHeight;
+    DisplayParams     fDisplayParams;
+    GrPixelConfig     fPixelConfig;
+    SkSurfaceProps    fSurfaceProps;
+
+    // parameters obtained from the native window
+    // Note that the platform .cpp file is responsible for
+    // initializing fSampleCount and fStencilBits!
+    int               fSampleCount;
+    int               fStencilBits;
+};
+
+}   // namespace sk_app
+
+#endif