Minor drawing and build bug fixes.

* Fixed clipping bug when USE_WX_ZOOM is enabled that causes rats nest
  to be drawn incorrectly.
* Fix ambiguous function error in trigo.cpp when building with MSVS.
* Add instructions for building wxWidgets with graphics context
  enabled (GDI+) using MinGW/MSYS to COMPILING.txt.
* Initial EESchema find dialog work.
* Set modified flag when using PCBNew global deletion dialog to prevent
  closing without warning user of changes.

Documentation/compiling/COMPILING.txt

@@ -64,11 +64,21 @@ there, and then:
     make install
 ----
 
-I think the default is to install into /usr/local/wxMSW-2.8.8.  You can probably
-pass --prefix=<wxInstallDir> to configure above to change where "make install"
-puts everything.  We will refer to <wxInstallDir> again below.  Without the
---prefix=<wxInstallDir> passed to configure, <wxInstallDir> will likely be
-    /usr/local/wxMSW-2.8.8
+The default install path is /usr/local.  Generally speaking MinGW likes header
+files in /mingw/include and library link files in /mingw/lib.  You can install
+path by setting --prefix=/mingw to configure above to change where "make install"
+puts everything.  We will refer to the --prefix setting as <wxInstallDir> below.
+
+If you are planning to enable the USE_WX_GRAPHICS_CONTEXT option (see options
+section below) on Windows using MinGW/MSYS you must build wxWidgets with the
+--enable-graphics_ctx switch added to the build configurations above.
+Unfortunately it is not quite that simple because MinGW does not define the
+Gdi+ header and link library files.  First you must download the required Gdi+
+development files from
+
+<http://www.miscdebris.net/blog/2009/09/17/adding-gdi-headers-to-mingw-to-compile-wxwidgets-with-wxgraphicscontext-support/>
+
+and unzip them where MinGW is installed.
 
 Verify that wx-config is in your path.  Modify your PATH environment variable
 if need be so you can run wx-config from a command prompt.  You may have to
@@ -103,7 +113,7 @@ Under Windows, if zlib is not installed, my cmake build will try to use the
 wxWidgets zlib build.  So, under windows kicad build should work without
 zlib install.
 
-If you are using the wxWidget zlib, make sure that the wxWidgets/src/zlib directory is copied 
+If you are using the wxWidget zlib, make sure that the wxWidgets/src/zlib directory is copied
 to ${wxWidgets_ROOT_DIR}/src/zlib
 
 Install CMake
@@ -202,5 +212,14 @@ These should be set from command line:
 
  KICAD_PYTHON ON/OFF
 
+ USE_WX_ZOOM ON/OFF (OPTIONAL)
+   Experimental coordinate translation code using wxDC instead of custom
+   Kicad version.
+
+ USE_WX_GRAPHICS_CONTEXT ON/OFF (OPTIONAL)
+   Experimental advanced drawing library code using wxGraphicsContext.  It
+   requires wxWidgets to be built with the --enable-graphics_ctx switch.
+   See building wxWidgets above.
+
 Note: that it is easy to build only a specific binary such as pcbnew alone:
     make pcbnew

TODO.txt

@@ -117,7 +117,8 @@ Use wxDC for coordinate scaling and offsetting fix. (Wayne)
 ------------------------------------------------------------
 W1) Make wxAutoBufferedPaintDC function properly.
 
-W2) Make bitmap grid drawing method function properly.
+W2) Make bitmap grid drawing method function properly or figure out a more
+    efficient method for drawing the grid.
 
 W3) Use one cursor position (preferrably logical (drawing) units) instead
     of keeping track of both logical and device cursor positions at the same
@@ -125,10 +126,6 @@ W3) Use one cursor position (preferrably logical (drawing) units) instead
 
 W4) Figure out why none of the apps render correctly using wxGCDC on Windows.
 
-W5) Add instructions for building wxWidgets with GDI+ using MinGW/MSYS
-    on Windows so wxGraphicsContext is available without having to use
-    Visual Studio.
-
 ** After (if?) new code accepted as project default: **
 
 W6) Remove all old coordinate scaling and offset code from Kicad.

common/gr_basic.cpp

@@ -262,7 +262,11 @@ static void WinClipAndDrawLine( EDA_Rect* ClipBox, wxDC* DC,
         xcliphi += width;
         ycliphi += width;
 
+#ifdef USE_WX_ZOOM
+        if( !ClipBox->Inside( wxPoint( x1, y1 ) ) && !ClipBox->Inside( wxPoint( x2, y2 ) ) )
+#else
         if( clip_line( x1, y1, x2, y2 ) )
+#endif
             return;
     }
 

common/trigo.cpp

@@ -402,9 +402,9 @@ wxPoint TwoPointVector( wxPoint startPoint, wxPoint endPoint )
 
 double DistanceLinePoint( wxPoint linePointA, wxPoint linePointB, wxPoint referencePoint )
 {
-    return fabs( (linePointB.x - linePointA.x) * (linePointA.y - referencePoint.y) -
-                (linePointA.x - referencePoint.x ) * (linePointB.y - linePointA.y) )
-           / EuclideanNorm( TwoPointVector( linePointA, linePointB ) );
+    return fabs( (double) ( (linePointB.x - linePointA.x) * (linePointA.y - referencePoint.y) -
+                 (linePointA.x - referencePoint.x ) * (linePointB.y - linePointA.y) )
+                  / EuclideanNorm( TwoPointVector( linePointA, linePointB ) ) );
 }
 
 

eeschema/find.cpp

@@ -23,9 +23,29 @@
 
 #include "kicad_device_context.h"
 
+#include <wx/fdrepdlg.h>          // Use the wxFindReplaceDialog events, data, and enums.
 #include <boost/foreach.hpp>
 
 
+/* Define schematic specific find and replace dialog flags based on the enum entries
+ * in wxFindReplaceFlags.   These flags are intended to be used as bit masks in the
+ * wxFindReplaceData::m_Flags member variable.  The varialble is defined as a wxUint32.
+ */
+enum SchematicFindReplaceFlags
+{
+    /* The last wxFindReplaceFlag enum is wxFR_MATCHCASE. */
+
+    /* Search the current sheet only. */
+    schFR_CURRENT_SHEET_ONLY        = wxFR_MATCHCASE << 1,
+
+    /* Search for design rule check markers. */
+    schFR_DRC_MARKERS               = wxFR_MATCHCASE << 2,
+
+    /* Search for component in all loaded libraries. */
+    schFR_SEARCH_LIBS_FOR_COMPONENT = wxFR_MATCHCASE << 3
+};
+
+
 /* Variables Locales */
 static int      s_ItemsCount, s_MarkerCount;
 static wxString s_OldStringFound;

pcbnew/initpcb.cpp

@@ -133,6 +133,7 @@ void WinEDA_PcbGlobalDeleteFrame::AcceptPcbDelete( wxCommandEvent& event )
     }
 
     m_Parent->DrawPanel->Refresh();
+    m_Parent->DrawPanel->GetScreen()->SetModify();
 
     EndModal( 1 );
 }