fix wx GL viewport + build improvements

Add GetRealPixelClientSize() method to HiDPIAware and implement using
wx GetClientSize() in panel.cpp for the generic version, and using
convertSizeToBacking: in macsupport.mm .

Add an AdjustViewport() method to GLDrawingPanel that sets glViewport()
using GetRealPixelClientSize(), and call it for the SIZE event. Debug
print the viewport size here instead of in DrawingPanelInit().

Build improvements:

* default to Cairo off for all platforms, currently libcairo2-dev does
  not install on Ubuntu

* default to ON for ENABLE_LINK and ENABLE_FFMPEG (for game recording),
  this will allow for more fully-featured default builds

* do not set SFML_STATIC_LIBRARIES on Mac because this is currently
  broken

* fix the Mac bundling/linking script to deal with links in dependent
  libs that already use @rpath (very minor change.)

CMakeLists.txt

@@ -18,9 +18,9 @@ option( ENABLE_DEBUGGER "Enable the debugger" ON )
 option( ENABLE_NLS "Enable translations" ON )
 option( ENABLE_ASM_CORE "Enable x86 ASM CPU cores" OFF )
 option( ENABLE_ASM_SCALERS "Enable x86 ASM graphic filters" OFF )
-option( ENABLE_LINK "Enable GBA linking functionality" OFF )
+option( ENABLE_LINK "Enable GBA linking functionality" ON )
 option( ENABLE_LIRC "Enable LIRC support" OFF )
-option( ENABLE_FFMPEG "Enable ffmpeg A/V recording" OFF )
+option( ENABLE_FFMPEG "Enable ffmpeg A/V recording" ON )
 if(ENABLE_ASM_SCALERS)
     option( ENABLE_MMX "Enable MMX" OFF )
 endif(ENABLE_ASM_SCALERS)
@@ -133,9 +133,9 @@ FIND_PACKAGE(SDL2 REQUIRED)
 ADD_DEFINITIONS(${SDL2_DEFINITIONS})
 
 if( ENABLE_LINK )
-    if(WIN32 OR APPLE)
+    if(WIN32)
         set(SFML_STATIC_LIBRARIES TRUE)
-    endif(WIN32 OR APPLE)
+    endif(WIN32)
     FIND_PACKAGE ( SFML 2 COMPONENTS network system )
 endif( ENABLE_LINK )
 

src/wx/CMakeLists.txt

@@ -3,12 +3,7 @@
 SET( CMAKE_CXX_FLAGS -std=gnu++11 )
 
 # not yet implemented
-IF(APPLE)
-    # does not work, no reason to link to it
 SET(CAIRO_DEFAULT OFF)
-ELSE(APPLE)
-    SET(CAIRO_DEFAULT ON)
-ENDIF(APPLE)
 
 option(ENABLE_CAIRO "Enable Cairo rendering for the wxWidgets port" ${CAIRO_DEFAULT})
 

src/wx/drawing.h

@@ -23,6 +23,8 @@ public:
 
 protected:
     void DrawArea(wxWindowDC& dc);
+    void OnSize(wxSizeEvent& ev);
+    void AdjustViewport();
 #if wxCHECK_VERSION(2, 9, 0)
     wxGLContext* ctx;
 #endif

src/wx/macsupport.mm

@@ -27,3 +27,13 @@ void HiDPIAware::RequestHighResolutionOpenGLSurface()
         [view setWantsBestResolutionOpenGLSurface:YES];
     }
 }
+
+void HiDPIAware::GetRealPixelClientSize(int* x, int* y)
+{
+    NSView* view = (NSView*)(GetWindow()->GetHandle());
+
+    NSSize backing_size = [view convertSizeToBacking:view.bounds.size];
+
+    *x = backing_size.width;
+    *y = backing_size.height;
+}

src/wx/panel.cpp

@@ -2037,12 +2037,9 @@ void GLDrawingPanel::DrawingPanelInit()
 
     DrawingPanel::DrawingPanelInit();
 
-#ifdef DEBUG
-    // you can use this to check that the gl surface is indeed high res
-    GLint m_viewport[4];
-    glGetIntegerv(GL_VIEWPORT, m_viewport);
-    vbamDebug("GL VIEWPORT: %d, %d, %d, %d", m_viewport[0], m_viewport[1], m_viewport[2], m_viewport[3]);
-#endif
+    AdjustViewport();
+
+    Connect(wxEVT_SIZE, wxSizeEventHandler(GLDrawingPanel::OnSize), NULL, this);
 
     // taken from GTK front end almost verbatim
     glDisable(GL_CULL_FACE);
@@ -2123,6 +2120,25 @@ void GLDrawingPanel::DrawingPanelInit()
 #endif
 }
 
+void GLDrawingPanel::OnSize(wxSizeEvent& ev)
+{
+    AdjustViewport();
+}
+
+void GLDrawingPanel::AdjustViewport()
+{
+    int x, y;
+    GetRealPixelClientSize(&x, &y);
+    glViewport(0, 0, x, y);
+
+#ifdef DEBUG
+    // you can use this to check that the gl surface is indeed high res
+    GLint m_viewport[4];
+    glGetIntegerv(GL_VIEWPORT, m_viewport);
+    vbamDebug("GL VIEWPORT: %d, %d, %d, %d", m_viewport[0], m_viewport[1], m_viewport[2], m_viewport[3]);
+#endif
+}
+
 void GLDrawingPanel::DrawArea(wxWindowDC& dc)
 {
 #if wxCHECK_VERSION(2, 9, 0)
@@ -2463,4 +2479,9 @@ double HiDPIAware::HiDPIScaleFactor()
 void HiDPIAware::RequestHighResolutionOpenGLSurface()
 {
 }
+
+void HiDPIAware::GetRealPixelClientSize(int* x, int* y)
+{
+    GetWindow()->GetClientSize(x, y);
+}
 #endif // HiDPI stubs

src/wx/tools/osx/third_party_libs_tool

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-version=0.6
+version=0.7
 
 main() {
     # parse options
@@ -237,7 +237,7 @@ relink() {
     # remove full path and version of lib in executable
     lib_link_path=$(
         otool -l "$target" 2>/dev/null | \
-        sed -n 's,^ *name \(/.*/*'"$lib_basename_unversioned_re"'[0-9.-]*\.dylib\) (offset .*,\1,p' | \
+        sed -n 's,^ *name \(.*/*'"$lib_basename_unversioned_re"'[0-9.-]*\.dylib\) (offset .*,\1,p' | \
         head -1
     )
 

src/wx/wxvbam.h

@@ -347,6 +347,7 @@ class HiDPIAware {
 public:
     virtual double HiDPIScaleFactor();
     virtual void RequestHighResolutionOpenGLSurface();
+    virtual void GetRealPixelClientSize(int* x, int* y);
     virtual wxWindow* GetWindow() = 0;
 private:
     double hidpi_scale_factor = 0;

todo.md

@@ -7,7 +7,7 @@
 - [ ] add OnSize handler for GLDrawingPanel in wx back to reset the GL viewport, and set viewport on init as well
 - [x] fix wx accels that are a game key with a modifier, e.g. ALT+ENTER when ENTER is a game key 
 - [ ] add an option to the video config dialog to choose native or non-native fullscreen for Mac (and check if the OS supports it)
-- [ ] fix SFML cmake stuff to detect brew SFML on Mac
+- [ ] fix SFML cmake stuff so that static linking works on Mac
 - [ ] update FindSDL2.cmake to use sdl2-config if available and pkg-config is not, get PR merged upstream
 - [ ] optimize all options defaults for modern hardware
 - [ ] fix filter options in wx to apply to both fullscreen and window mode
@@ -22,6 +22,7 @@
 - [ ] set up automatic builds for all platforms
 - [ ] see what code we can steal from other emu folks, e.g. filters etc.
 - [ ] update config handling, to switch to XDG on linux etc.
+- [ ] add simple 'mute audio' option for wx interface
 
 # Coding Guidelines (for those that want to help out and send a pull request.)