+// ========================================================================
+// Helper functions for converting to/from wxWidgets coordinates and a
+// specified NSView's coordinate system.
+// ========================================================================
+NSPoint CocoaTransformNSViewBoundsToWx(NSView *nsview, NSPoint pointBounds)
+{
+ wxCHECK_MSG(nsview, pointBounds, wxT("Need to have a Cocoa view to do translation"));
+ if([nsview isFlipped])
+ return pointBounds;
+ NSRect ourBounds = [nsview bounds];
+ return NSMakePoint
+ ( pointBounds.x
+ , ourBounds.size.height - pointBounds.y
+ );
+}
+
+NSRect CocoaTransformNSViewBoundsToWx(NSView *nsview, NSRect rectBounds)
+{
+ wxCHECK_MSG(nsview, rectBounds, wxT("Need to have a Cocoa view to do translation"));
+ if([nsview isFlipped])
+ return rectBounds;
+ NSRect ourBounds = [nsview bounds];
+ return NSMakeRect
+ ( rectBounds.origin.x
+ , ourBounds.size.height - (rectBounds.origin.y + rectBounds.size.height)
+ , rectBounds.size.width
+ , rectBounds.size.height
+ );
+}
+
+NSPoint CocoaTransformNSViewWxToBounds(NSView *nsview, NSPoint pointWx)
+{
+ wxCHECK_MSG(nsview, pointWx, wxT("Need to have a Cocoa view to do translation"));
+ if([nsview isFlipped])
+ return pointWx;
+ NSRect ourBounds = [nsview bounds];
+ return NSMakePoint
+ ( pointWx.x
+ , ourBounds.size.height - pointWx.y
+ );
+}
+
+NSRect CocoaTransformNSViewWxToBounds(NSView *nsview, NSRect rectWx)
+{
+ wxCHECK_MSG(nsview, rectWx, wxT("Need to have a Cocoa view to do translation"));
+ if([nsview isFlipped])
+ return rectWx;
+ NSRect ourBounds = [nsview bounds];
+ return NSMakeRect
+ ( rectWx.origin.x
+ , ourBounds.size.height - (rectWx.origin.y + rectWx.size.height)
+ , rectWx.size.width
+ , rectWx.size.height
+ );
+}
+
+// ============================================================================
+// Screen coordinate helpers
+// ============================================================================
+
+/*
+General observation about Cocoa screen coordinates:
+It is documented that the first object of the [NSScreen screens] array is the screen with the menubar.
+
+It is not documented (but true as far as I can tell) that (0,0) in Cocoa screen coordinates is always
+the BOTTOM-right corner of this screen. Recall that Cocoa uses cartesian coordinates so y-increase is up.
+
+It isn't clearly documented but visibleFrame returns a rectangle in screen coordinates, not a rectangle
+relative to that screen's frame. The only real way to test this is to configure two screens one atop
+the other such that the menubar screen is on top. The Dock at the bottom of the screen will then
+eat into the visibleFrame of screen 1 by incrementing it's y-origin. Thus if you arrange two
+1920x1200 screens top/bottom then screen 1 (the bottom screen) will have frame origin (0,-1200) and
+visibleFrame origin (0,-1149) which is exactly 51 pixels higher than the full frame origin.
+
+In wxCocoa, we somewhat arbitrarily declare that wx (0,0) is the TOP-left of screen 0's frame (the entire screen).
+However, this isn't entirely arbitrary because the Quartz Display Services (CGDisplay) uses this same scheme.
+This works out nicely because wxCocoa's wxDisplay is implemented using Quartz Display Services instead of NSScreen.
+*/
+
+namespace { // file namespace
+
+class wxCocoaPrivateScreenCoordinateTransformer
+{
+ DECLARE_NO_COPY_CLASS(wxCocoaPrivateScreenCoordinateTransformer)
+public:
+ wxCocoaPrivateScreenCoordinateTransformer();
+ ~wxCocoaPrivateScreenCoordinateTransformer();
+ wxPoint OriginInWxDisplayCoordinatesForRectInCocoaScreenCoordinates(NSRect windowFrame);
+ NSPoint OriginInCocoaScreenCoordinatesForRectInWxDisplayCoordinates(wxCoord x, wxCoord y, wxCoord width, wxCoord height, bool keepOriginVisible);
+
+protected:
+ NSScreen *m_screenZero;
+ NSRect m_screenZeroFrame;
+};
+
+// NOTE: This is intended to be a short-lived object. A future enhancment might
+// make it a global and reconfigure it upon some notification that the screen layout
+// has changed.
+inline wxCocoaPrivateScreenCoordinateTransformer::wxCocoaPrivateScreenCoordinateTransformer()
+{
+ NSArray *screens = [NSScreen screens];
+
+ [screens retain];
+
+ m_screenZero = nil;
+ if(screens != nil && [screens count] > 0)
+ m_screenZero = [[screens objectAtIndex:0] retain];
+
+ [screens release];
+
+ if(m_screenZero != nil)
+ m_screenZeroFrame = [m_screenZero frame];
+ else
+ {
+ wxLogWarning(wxT("Can't translate to/from wx screen coordinates and Cocoa screen coordinates"));
+ // Just blindly assume 1024x768 so that at least we can sort of flip things around into
+ // Cocoa coordinates.
+ // NOTE: Theoretically this case should never happen anyway.
+ m_screenZeroFrame = NSMakeRect(0,0,1024,768);
+ }
+}
+
+inline wxCocoaPrivateScreenCoordinateTransformer::~wxCocoaPrivateScreenCoordinateTransformer()
+{
+ [m_screenZero release];
+ m_screenZero = nil;
+}
+
+inline wxPoint wxCocoaPrivateScreenCoordinateTransformer::OriginInWxDisplayCoordinatesForRectInCocoaScreenCoordinates(NSRect windowFrame)
+{
+ // x and y are in wx screen coordinates which we're going to arbitrarily define such that
+ // (0,0) is the TOP-left of screen 0 (the one with the menubar)
+ // NOTE WELL: This means that (0,0) is _NOT_ an appropriate position for a window.
+
+ wxPoint theWxOrigin;
+
+ // Working in Cocoa's screen coordinates we must realize that the x coordinate we want is
+ // the distance between the left side (origin.x) of the window's frame and the left side of
+ // screen zero's frame.
+ theWxOrigin.x = windowFrame.origin.x - m_screenZeroFrame.origin.x;
+
+ // Working in Cocoa's screen coordinates we must realize that the y coordinate we want is
+ // actually the distance between the top-left of the screen zero frame and the top-left
+ // of the window's frame.
+
+ theWxOrigin.y = (m_screenZeroFrame.origin.y + m_screenZeroFrame.size.height) - (windowFrame.origin.y + windowFrame.size.height);
+
+ return theWxOrigin;
+}
+
+inline NSPoint wxCocoaPrivateScreenCoordinateTransformer::OriginInCocoaScreenCoordinatesForRectInWxDisplayCoordinates(wxCoord x, wxCoord y, wxCoord width, wxCoord height, bool keepOriginVisible)
+{
+ NSPoint theCocoaOrigin;
+
+ // The position is in wx screen coordinates which we're going to arbitrarily define such that
+ // (0,0) is the TOP-left of screen 0 (the one with the menubar)
+
+ // NOTE: The usable rectangle is smaller and hence we have the keepOriginVisible flag
+ // which will move the origin downward and/or left as necessary if the origin is
+ // inside the screen0 rectangle (i.e. x/y >= 0 in wx coordinates) and outside the
+ // visible frame (i.e. x/y < the top/left of the screen0 visible frame in wx coordinates)
+ // We don't munge origin coordinates < 0 because it actually is possible that the menubar is on
+ // the top of the bottom screen and thus that origin is completely valid!
+ if(keepOriginVisible && (m_screenZero != nil))
+ {
+ // Do al of this in wx coordinates because it's far simpler since we're dealing with top/left points
+ wxPoint visibleOrigin = OriginInWxDisplayCoordinatesForRectInCocoaScreenCoordinates([m_screenZero visibleFrame]);
+ if(x >= 0 && x < visibleOrigin.x)
+ x = visibleOrigin.x;
+ if(y >= 0 && y < visibleOrigin.y)
+ y = visibleOrigin.y;
+ }
+
+ // The x coordinate is simple as it's just relative to screen zero's frame
+ theCocoaOrigin.x = m_screenZeroFrame.origin.x + x;
+ // Working in Cocoa's coordinates think to start at the bottom of screen zero's frame and add
+ // the height of that rect which gives us the coordinate for the top of the visible rect. Now realize that
+ // the wx coordinates are flipped so if y is say 10 then we want to be 10 pixels down from that and thus
+ // we subtract y. But then we still need to take into account the size of the window which is h and subtract
+ // that to get the bottom-left origin of the rectangle.
+ theCocoaOrigin.y = m_screenZeroFrame.origin.y + m_screenZeroFrame.size.height - y - height;
+
+ return theCocoaOrigin;
+}
+
+} // namespace
+
+wxPoint wxWindowCocoa::OriginInWxDisplayCoordinatesForRectInCocoaScreenCoordinates(NSRect windowFrame)
+{
+ wxCocoaPrivateScreenCoordinateTransformer transformer;
+ return transformer.OriginInWxDisplayCoordinatesForRectInCocoaScreenCoordinates(windowFrame);
+}
+
+NSPoint wxWindowCocoa::OriginInCocoaScreenCoordinatesForRectInWxDisplayCoordinates(wxCoord x, wxCoord y, wxCoord width, wxCoord height, bool keepOriginVisible)
+{
+ wxCocoaPrivateScreenCoordinateTransformer transformer;
+ return transformer.OriginInCocoaScreenCoordinatesForRectInWxDisplayCoordinates(x,y,width,height,keepOriginVisible);
+}
+
projects / wxWidgets.git / blobdiff